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<SEC-DOCUMENT>0001309014-11-000095.txt : 20110225
<SEC-HEADER>0001309014-11-000095.hdr.sgml : 20110225
<ACCEPTANCE-DATETIME>20110225114445
ACCESSION NUMBER:		0001309014-11-000095
CONFORMED SUBMISSION TYPE:	6-K
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20110225
FILED AS OF DATE:		20110225
DATE AS OF CHANGE:		20110225

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			UNITED MICROELECTRONICS CORP
		CENTRAL INDEX KEY:			0001033767
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			CA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		6-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-15128
		FILM NUMBER:		11639278

	BUSINESS ADDRESS:	
		STREET 1:		978 HIGHLANDS CIRCLE
		CITY:			LOS ALTOS
		STATE:			CA
		ZIP:			94024
		BUSINESS PHONE:		6509688855

	MAIL ADDRESS:	
		STREET 1:		978 HIGHLANDS CIRCLE
		CITY:			LOS ALTOS
		STATE:			CA
		ZIP:			94024
</SEC-HEADER>
<DOCUMENT>
<TYPE>6-K
<SEQUENCE>1
<FILENAME>htm_5629.htm
<DESCRIPTION>LIVE FILING
<TEXT>
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United Microelectronics Corporation&nbsp;-&nbsp;Form&nbsp;6-K
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<A NAME="DOCUMENT_TOP">&nbsp;</A>
<P align="center">
<FONT size="+1"><B>
UNITED STATES<BR>
SECURITIES AND EXCHANGE COMMISSION<BR>
Washington, D.C. 20549</B>
</P>

<P>
<CENTER>
<FONT SIZE="+2" FACE="Arial"><B>FORM 6-K</B></FONT><BR>

</CENTER>
</P>

<P>
<CENTER>
<FONT size="+1">
REPORT OF FOREIGN PRIVATE ISSUER<BR>PURSUANT TO RULE 13a-16 OR 15d-16<BR>UNDER THE SECURITIES EXCHANGE ACT OF 1934
</FONT>
</CENTER>
</P>
<P>
<CENTER>
February 25, 2011
</CENTER>
</P>
<P>
<CENTER>
Commission File Number: 001-15128
</CENTER>
</P>
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<TABLE CELLSPACING="0" BORDER="0" CELLPADDING="0" WIDTH="100%">
  <TR>
    <TD VALIGN="BOTTOM" ALIGN="CENTER" WIDTH="100%" COLSPAN="5">
	<FONT SIZE="+2"><B>United Microelectronics Corporation</B></FONT><BR>
	<FONT SIZE="-7">&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;</FONT>
    </TD>
  </TR>
  <TR>
    <TD VALIGN="CENTER" ALIGN="CENTER" WIDTH="100%" COLSPAN="5">
	<FONT SIZE="-1">(Translation of registrant&#146;s name into English)</FONT>
    </TD>
  </TR>
  <TR>
    <TD VALIGN="BOTTOM" ALIGN="CENTER" WIDTH="100%" COLSPAN="5">
	&nbsp;
    </TD>
  </TR>

  <TR>
    <TD VALIGN="BOTTOM" ALIGN="CENTER" WIDTH="100%" COLSPAN="5">
      <FONT FACE="Courier" SIZE="+0">No. 3 Li Hsin Road II<br>Science Park<br>Hsinchu, Taiwan, R.O.C.<br></FONT>
    </TD>
  </TR>
  <TR>
    <TD VALIGN="BOTTOM" ALIGN="CENTER" WIDTH="100%" COLSPAN="5">
        <FONT SIZE="-7">&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;</FONT><BR>
	    <FONT SIZE="-1">(Address of principal executive office)</FONT>
    </TD>
  </TR>
  <TR>
    <TD VALIGN="BOTTOM" ALIGN="CENTER" WIDTH="100%" COLSPAN="5">
	&nbsp;
    </TD>
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	Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:&nbsp;&nbsp;[<FONT FACE="Courier">x</FONT>]&nbsp;Form 20-F&nbsp;&nbsp;&nbsp;&nbsp;[<FONT FACE="Courier">&nbsp;</FONT>]&nbsp;Form 40-F
    </TD>
  </TR>
  <TR>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" COLSPAN="5" WIDTH="100%">
        &nbsp;
    </TD>
  </TR>

  <TR>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" COLSPAN="5" WIDTH="100%">
        Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):&nbsp;&nbsp;[<FONT FACE="Courier">&nbsp;</FONT>]
    </TD>
  </TR>

  <TR>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" COLSPAN="5" WIDTH="100%">
        &nbsp;
    </TD>
  </TR>

  <TR>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" COLSPAN="5" WIDTH="100%">
        Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):&nbsp;&nbsp;[<FONT FACE="Courier">&nbsp;</FONT>]
    </TD>
  </TR>

  <TR>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" COLSPAN="5" WIDTH="100%">
        &nbsp;
    </TD>
  </TR>

  <TR>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" COLSPAN="5" WIDTH="100%">
        Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934:&nbsp;&nbsp;[<FONT FACE="Courier">&nbsp;</FONT>]&nbsp;Yes&nbsp;&nbsp;&nbsp;&nbsp;[<FONT FACE="Courier">x</FONT>]&nbsp;No
    </TD>
  </TR>

  <TR>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" COLSPAN="5" WIDTH="100%">
        &nbsp;
    </TD>
  </TR>
</TABLE>

<TABLE CELLSPACING="0" BORDER="0" CELLPADDING="0" WIDTH="100%">
  <TR>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="100%">
        If "Yes" is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b):&nbsp;&nbsp;&nbsp;<FONT FACE="Courier"><U>&nbsp;n/a&nbsp;</U></FONT>
    </TD>
  </TR>
  <TR>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="100%">
        &nbsp;
    </TD>
  </TR>
</TABLE>
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<PRE>

</PRE>
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<FONT SIZE="+1">
<CENTER>
<B>SIGNATURES</B>
</CENTER>
</FONT>
<TABLE CELLSPACING="0" BORDER="0" CELLPADDING="0" WIDTH="100%">
  <TR>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="100%">
       &nbsp;
    </TD>
  </TR>
  <TR>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="100%">
       Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
    </TD>
  </TR>
  <TR>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="100%">
       &nbsp;
    </TD>
  </TR>
</TABLE>
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<TABLE CELLSPACING="0" BORDER="0" CELLPADDING="0" WIDTH="100%">
  <TR>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="40%">
       &nbsp;
    </TD>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="4%%">
       &nbsp;
    </TD>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="56%">
       United Microelectronics Corporation
    </TD>
  </TR>

  <TR>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="40%">
       &nbsp;
    </TD>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="4%%">
       &nbsp;
    </TD>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="56%">
       &nbsp;
    </TD>
  </TR>

  <TR>
    <TD VALIGN="TOP" ALIGN="LEFT" WIDTH="40%">
       Date: 20110225
    </TD>
    <TD VALIGN="TOP" ALIGN="LEFT" WIDTH="4%%">
       By:
    </TD>
    <TD VALIGN="TOP" ALIGN="LEFT" WIDTH="56%">
       Chitung Liu<BR><HR WIDTH="30%" NOSHADE>
    </TD>
  </TR>

  <TR>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="40%">
       &nbsp;
    </TD>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="4%%">
       Name:&nbsp;
    </TD>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="56%">
       Chitung Liu
    </TD>
  </TR>

  <TR>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="40%">
       &nbsp;
    </TD>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="4%%">
       Title:
    </TD>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="56%">
       Chief Financial Officer
    </TD>
  </TR>
  <TR>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="40%">
       &nbsp;
    </TD>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="4%%">
       &nbsp;
    </TD>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="56%">
       &nbsp;
    </TD>
  </TR>
</TABLE>
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<CENTER>
<FONT SIZE="+1"><B>
EXHIBIT&nbsp;INDEX
</B></FONT>
</CENTER>
<BR>
<CENTER>
<TABLE CELLSPACING="0" BORDER="0" CELLPADDING="0" WIDTH="60%">
  <TR VALIGN="BOTTOM">
    <TD NOWRAP ALIGN="LEFT" WIDTH="8%">
      <FONT SIZE="-1"><B>Exhibit No.</B></FONT>
    </TD>
    <TD WIDTH="15%">
      &nbsp;
    </TD>
    <TD NOWRAP ALIGN="LEFT" WIDTH="77%">
      <FONT SIZE="-1"><B>Description</B></FONT>
    </TD>
  </TR>
  <TR VALIGN="BOTTOM">
    <TD NOWRAP ALIGN="CENTER" WIDTH="8%">
      <HR SIZE="1" NOSHADE>
    </TD>
    <TD WIDTH="15%">
      &nbsp;
    </TD>
    <TD NOWRAP ALIGN="CENTER" WIDTH="77%">
      <HR ALIGN="LEFT" SIZE="1" WIDTH="88%" NOSHADE>
    </TD>
  </TR>
<!-- Exhibit Index Header Page -->
<!-- Exhibit Index Item -->
  <TR VALIGN="BOTTOM">
    <TD VALIGN="TOP" WIDTH="8%" nowrap>
      <FONT SIZE="-1">99<FONT>
    </TD>
    <TD WIDTH="15%">
       &nbsp;
    </TD>
    <TD ALIGN="LEFT" VALIGN="TOP" WIDTH="77%">
      <FONT SIZE="2">6K on 20110225</FONT>
    </TD>
  </TR>
<!-- End Exhibit Index Item -->
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    <TD VALIGN="TOP" WIDTH="8%" nowrap>
      &nbsp;
    </TD>
    <TD WIDTH="15%">
       &nbsp;
    </TD>
    <TD ALIGN="LEFT" VALIGN="TOP" WIDTH="77%">
      &nbsp;
    </TD>
  </TR>
</TABLE>
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</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99
<SEQUENCE>2
<FILENAME>exhibit1.htm
<DESCRIPTION>EX-99
<TEXT>
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Exhibit&nbsp;&nbsp;EX-99
</TITLE>
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<BODY style="font-family: 'Times New Roman',Times,serif">


<P align="center" style="font-size: 10pt"><FONT style="font-size: 12pt"><B>Exhibit</B></FONT>



<P align="left" style="font-size: 12pt"><U>Exhibit</U> <U>Description</U>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">99.1</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Announcement on 2011/01/26: UMC announced its unconsolidated operating results for the fourth
quarter of 2010</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">99.2</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Announcement on 2011/01/27:Represent subsidiary United Lighting Opto-electronic Inc. to
announce related materials on merger</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">99.3</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Announcement on 2011/01/31: Represent subsidiary TOPCELL SOLAR INTERNATIONAL CO., LTD. to
announce related materials on acquisition of machinery and equipment</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">99.4</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Announcement on 2011/02/10: Mainland Chinese company investment announcement on behalf of
subsidiary, TLC Capital Co., LTD.</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">99.5</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Announcement on 2011/02/21: To announce related materials on acquisition of machinery and
equipment</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">99.6</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Announcement on 2011/02/23: Represent subsidiary MOS Art Pack Corporation to announce
liquidation</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">99.7</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Announcement on 2011/02/10: January Revenue</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">99.8</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Announcement on 2011/02/15: the trading and pledge of UMC common shares by directors,
executive officers and 10% shareholders of UMC</TD>
</TR>



</TABLE>

<P align="center" style="font-size: 10pt; display: none">1
<!-- PAGEBREAK -->


<P><TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 12pt">



</TABLE>


<P align="right" style="font-size: 12pt"><B>Exhibit&nbsp;99.1</B>



<P align="center" style="font-size: 12pt"><B>UMC announced its unconsolidated operating results for the fourth quarter of 2010</B>



<P align="left" style="font-size: 12pt">1.Date of the investor/press conference or the date that the Company disclose its financial or
business information to the public:2011/01/26
<BR>
2.Location of the investor/press conference or the location that the Company disclose its financial
or business information to the public: 2F Shangri-La Ballroom, Far Eastern Plaza Hotel 201 Tun Hwa
South Road, Sec. 2, Taipei
<BR>
3.Financial and business related information:UMC Q4 2010 Financial and Operating Results.
<BR>
4.If a press release is distributed, the content of the press release:United Microelectronics
Corporation (NYSE: UMC; TWSE: 2303) (&#147;UMC&#148; or &#147;The Company&#148;), a leading global semiconductor
foundry, today announced its unconsolidated operating results for the fourth quarter of
2010.Revenue from 4Q10 was NT$31.32&nbsp;billion, a 4.1% quarter-over-quarter decrease from NT$32.65
billion in 3Q10, and a 12.9% year-over-year increase from NT$27.75&nbsp;billion in 4Q09. Gross margin
was 32.1%, with 21.1% operating margin, NT$6.42&nbsp;billion net income, and NT$0.52 earnings per
ordinary share. In 2010, revenue for the full year was NT$120.43&nbsp;billion, with NT$23.90&nbsp;billion net
income, and NT$1.91 earnings per share.Dr.&nbsp;Shih-Wei Sun, CEO of UMC, said, &#147;UMC is dedicated to the
customer-driven development of advanced technologies and foundry manufacturing solutions. This
commitment has led to considerable success in our efforts to broaden our customer base, optimize
product mix, and boost profit capability. 2010 wafer shipments reached a record high of
approximately 4.52&nbsp;million 8-inch equivalent wafers, with revenue hitting another record high of
NT$120.43&nbsp;billion. Full-year operating profit, EPS, and an ROE of 11% also reached their highest
levels in recent years. 2010 capital expenditures were US$1.8&nbsp;billion. With the expansion of
high-end capacities, 65nm and below revenue contribution for 4Q alone reached 35%, with 40nm
products increasing to 5% of total revenue. Revenue contribution from 65nm and below products for
the full year grew an impressive 170% as well.&#148;Dr.&nbsp;Sun continued, &#147;After experiencing growth
momentum for over a year and a half at UMC, we anticipate revenue for the first quarter of 2011 to
decline slightly due to appreciation of NT dollar, certain customers undergoing product and
technology-node transitions, and other seasonal adjustments. UMC is optimistic about demand for
high-end chips this year, with revenue contribution from 40nm growing quarterly in 2011 to become a
main revenue driver. We will also begin 28nm customer-product pilot around the middle of this
year. To satisfy customers&#146; technology and capacity requirements while ensuring both stable growth
and long-term ROE, we plan to invest about the same amount of CAPEX as last year. Looking ahead in
2011, UMC will build upon its solid foundation and continue advancing its technologies and service
quality to provide its global customers the most appropriate foundry solutions.&#148;First Quarter of
2011 Outlook & Guidance -Wafer shipments: low single-digit percentage decline.Capacity utilization:
approximately 90%. Gross margin: over 25%.
<BR>
5.Any other matters that need to be specified:None.


<P align="right" style="font-size: 12pt"><B>Exhibit&nbsp;99.2</B>



<P align="center" style="font-size: 12pt"><B>Represent subsidiary United Lighting Opto-electronic Inc. to announce related materials on merger</B>



<P align="left" style="font-size: 12pt">1.Kind of merger/acquisition (e.g.merger, consolidation, spin-off, acquisition, or receiving
assignment of shares):Merger
<BR>
2.Date of occurrence of the event:2011/01/27
<BR>
3.Names of companies participating in the merger (e.g.name of the other company participating in
the merger or consolidation, newly established company in a spin-off, acquired company, or company
whose shares are taken assignment of):POWER LIGHT TECH CO, LTD (existing company). After the
merger, the company plans to change the name as United Lighting Opto-electronic Inc.;UNITED
LIGHTING OPTO-ELECTRONIC INC. (extinguished company).
<BR>
4.Counterparty (e.g.name of the other company participating in the merger or consolidation, company
taking assignment of the spin-off, or counterparty to the acquisition or assignment of
shares):POWER LIGHT TECH CO, LTD; UNITED LIGHTING OPTO-ELECTRONIC INC.
<BR>
5.Relationship between the counterparty and the Company (investee company in which the Company has
re-invested and has shareholding of XX%), and explanation of the reasons for the decision to
acquire, or take assignment of the shares of, an affiliated enterprise or related person, and
whether it will affect shareholders&#146; equity:UNITED LIGHTING OPTO-ELECTRONIC INC. is 93.69%
subsidiaries of UMC&#161;FPOWER LIGHT TECH CO, LTD is 42.33 % Investee company of UMC The reason for the
decision: Base on the consideration of group resources integration and the industrial economies of
scale, which will have a positive effect on shareholders&#146; equity after merger.
<BR>
6.Purpose/objective of the merger/acquisitionation:To integrate resources, improve operating
performance and strengthen the Company&#146;s overall competitiveness.
<BR>
7.Anticipated benefits of the merger/acquisition:The merger will improve financial structure and
reduce operating cost.
<BR>
8.Effect of the merger or consolidation on net worth per share and earnings per share:It will
reduce operating cost and has a positive effect on net worth per share and earning per share.
<BR>
9.Share exchange ratio and basis of its calculation:Share exchange ration: All attended directors
of two company&#146;s unanimously approved this motion respectively. Based on each share of POWER LIGHT
TECH CO, LTD. will be exchange into 1.94 share of UNITED LIGHTING OPTO-ELECTRONIC INC.Basis of
calculations: The above exchange ratio is based on both net asset audited report on December&nbsp;31,
2010
<BR>
10.Scheduled timetable for consummation:The expected basis date of merger will be 2011/04/01.
<BR>
11.Matters related to assumption by the existing company or new company of rights and obligations
of the extinguished (or spun-off) company::The existing company takes all the rights and
obligations of the extinguished company upon merger.
<BR>
12.Basic information of companies participating in the merger:Company name: POWER LIGHT TECH CO,
LTDDate of establishment: 2008/3/17 Capital: NT239,190,000 Chairman: J.L Lai General Manager: K.S.
Wang Telphone:03-578-8191 Main Business: LED lighting manufacturing and sale Company name: UNITED
LIGHTING OPTO-ELECTRONIC INC.Date of estabilishment: 2009/9/09 Capital: NT$80,0500,000 Chairman:
W.N. SIN General Manager: K.S. Wang
<BR>
Telphone: 03-563-0598 Main Business: LED lighting manufacturing and sale
<BR>
13.Matters related to the spin-off (including estimated value of the business and assets planned to
be assigned to the existing company or new company; the total number and the types and volumes of
the shares to be acquired by the split company or its shareholders; matters related to the
reduction, if any, in capital of the split company) (note: not applicable other than where there is
announcementof a spin-off):NA
<BR>
14.Conditions and restrictions on future transfers of shares resulting from the merger or
acquisition:NA
<BR>
15.Other important stipulations:NA
<BR>
16.Do the directors have any objection to the present transaction?:None


<P align="right" style="font-size: 12pt"><B>Exhibit&nbsp;99.3</B>



<P align="center" style="font-size: 12pt"><B>Represent subsidiary TOPCELL SOLAR INTERNATIONAL CO., LTD. to announce related materials on<BR>
acquisition of machinery and equipment</B>



<P align="left" style="font-size: 12pt">1.Name and nature of the subject matter (e.g.land located at Sublot XX, Lot XX, North District,
Taichung City): Machinery and equipment.
<BR>
2.Date of the occurrence of the event:2011/01/31
<BR>
3.Transaction volume (e.g.XX square meters, equivalent to XX p&#146;ing), unit price, total transaction
price:Transaction volume: one batch ; unit price:$729,626,400 NTD;Total transaction price:
$729,626,400 NTD
<BR>
4.Counterparty to the trade and its relationship with the company (if the trading counterpart is a
natural person and is not an actual related party of the Company, the name of the trading
counterpart is not required to be disclosed):Applied Materials Italia S.r.l.; non-related party
transaction
<BR>
5.Where the counterpart to the trade is an actual related party, a public announcement shall also
include the reason for choosing the related party as trading counterpart and the identity of the


<P align="left" style="font-size: 12pt; text-indent: 1%">previous owner (including its relationship with the company and the trading counterpart),
price of transfer and the date of acquisition:Not applicable.


<P align="left" style="font-size: 12pt">6.Where a person who owned the property within the past five years has been an actual related
person of the company, a public announcement shall also include the dates and prices of acquisition
and disposal by the related person and the person&#146;s relationship to the company at those times:Not
applicable.
<BR>
7.Anticipated loss or profit from the disposal (not applicable in cases of acquisition of assets)
(where originally deferred, the status or recognition shall be stated and explained):Not
applicable.
<BR>
8.Terms of delivery or payment (including payment period and monetary amount):Base on purchase
order payment term.
<BR>
9.The manner of deciding on this transaction (such as tender invitation, price comparison, or price
negotiation), the reference basis for the decision on price and the decision-making department:
Follow by the company&#146;s limited authority of decision-making and related management methods.
<BR>
10.Name of the professional appraisal institution and its appraisal amount:Not applicable.
<BR>
11.Reason for any significant discrepancy with the transaction amount, and opinion of the
certifying CPA:Not applicable.
<BR>
12.Is the appraisal report price a limited price or specific price?:Not applicable.
<BR>
13.Has an appraisal report not yet been obtained?:Not applicable.
<BR>
14.Reason an appraisal report has not yet been obtained:Not applicable.
<BR>
15.Broker and broker&#146;s fee:None.
<BR>
16. Concrete purpose or use of the acquisition or disposition: For production.
<BR>
17. Do the directors have any objection to the present transaction?: Not applicable.
<BR>
18. Any other matters that need to be specified:None


<P align="right" style="font-size: 12pt"><B>Exhibit&nbsp;99.4</B>



<P align="center" style="font-size: 12pt"><B>Mainland Chinese company investment announcement on behalf of subsidiary, TLC Capital Co., LTD.</B>



<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>1.Date of occurrence of the event:2011/02/10</TD>
</TR>

</TABLE>


<P align="left" style="font-size: 12pt">2.Method of the present increase (decrease)&nbsp;in investment:Signing of investment agreement for the
investment in mainland Chinese company Xueren Network (Shenzhen) Co., Ltd. through YETI Group
Limited (British Virgin Islands)
<BR>
3.Transaction volume, price per unit, and total monetary amount of the transaction:6,152,584
shares, price per share US$0.4876, Total amount US$3,000,000.
<BR>
4.Company name of the invested mainland Chinese company:
<BR>
Xueren Network (Shenzhen) Co., Ltd.
<BR>
5.Paid-in capital of said invested mainland Chinese company:US$17,580,000.
<BR>
6.Amount of new capital increment currently planned by said invested mainland Chinese
company:US$16,000,000.
<BR>
7.Main business items of said invested mainland Chinese company:Engaged in the network hardware and
software&#146;s technological development
<BR>
8.Type of CPA opinion issued for the financial statement of said invested mainland Chinese company
for the most recent fiscal year:Unqualified opinion
<BR>
9.Net worth of said invested mainland Chinese company on the financial statement for the most
recent fiscal year:RMB$94,064,242.58
<BR>
10.Amount of profit/loss of said invested mainland Chinese company on the financial statement for
the most recent fiscal year:RMB$-22,273,256.89.
<BR>
11.Amount of actual investment to date in said invested mainland Chinese company:None
<BR>
12.Counterparty to the transaction and its relationship to the Company: NA
<BR>
13.Where the counterparty to the transaction is an actual related party, public announcement shall
also be made of the reason for choosing the related party as the counterparty and the identity of
the previous owner (including its relationship with the company and the trading counterpart), the
date of transfer, and the price:NA
<BR>
14.Where a person who owned the subject matter of the transaction within the past five years has
been an actual related party of the company, public announcement shall also be made of the dates
and prices of acquisition and disposal by the related party and such party&#146;s relationship to the
company at those times: NA
<BR>
15.Gain (or loss) on disposal: NA
<BR>
16.Terms of delivery or payment (including payment period and monetary amount), restrictive
covenants in the contract, and other important stipulations:According to the contract; None
<BR>
17.The manner of deciding on this transaction, the reference basis for the decision on price and
the decision-making department:Negotiation by TLC Capital Co. Ltd. and the investee company; The
subscription price of rights issue; Chairman and Presidents&#146; Office
<BR>
18.Broker: None
<BR>
19.Concrete purpose of the acquisition or disposal:Long-term investment
<BR>
20.Do the directors have any objection to the present transaction?: None
<BR>
21.Total amount of mainland China area investment (including the present investment) approved by
the Investment Commission to date: Investment Commission to date: US$35,350,887
<BR>
22.Ratio of the total amount of investment (including the present investment) in the mainland
China area approved by the Investment Commission to date to the paid-in capital on the financial
statement for the most recent period: 23.76%
<BR>
23.Ratio of the total amount of investment (including the present investment) in the mainland China
area approved by the Investment Commission to date to the total assets on the financial statement
for the most recent period:15.44%
<BR>
24.Ratio of the total amount of investment (including the present investment) in the mainland
China area approved by the Investment Commission to date to the shareholders&#146; equity on the
financial statement for the most recent period:15.50%
<BR>
25.Total amount of actual investment in the mainland China area to date:US$18,499,500
<BR>
26.Ratio of the total amount of actual investment in the mainland China area to date to the paid-in
capital on the financial statement for the most recent period:12.43%
<BR>
27.Ratio of the total amount of actual investment in the mainland China area to date to the total
assets on the financial statement for the most recent period: 8.08%
<BR>
28.Ratio of the total amount of actual investment in the mainland China area to date to the
shareholders&#146; equity on the financial statement for the most recent period:8.11%
<BR>
29.Amount of recognized profits and losses on investment in the mainland China area for the most
recent three fiscal years:Year 2008: -NT$2,469,706 Year 2009: NT$2,456,989
<BR>
30.Amount of profit remitted back to Taiwan for the most recent three fiscal years: US$0
<BR>
31.Has the CPA issued an opinion on the unreasonableness of the price of the current transaction?:
None
<BR>
32.Any other matters that need to be specified:The investment will be executed upon the approval of
Investment Commission, MOEA.


<P align="right" style="font-size: 12pt"><B>Exhibit&nbsp;99.5</B>



<P align="center" style="font-size: 12pt"><B>To announce related materials on acquisition of machinery and equipment</B>



<P align="left" style="font-size: 12pt">1.&nbsp;Name and nature of the subject matter (e.g.land located at Sublot XX, Lot XX, North District,
Taichung City): Machinery and equipment
<BR>
2. Date of the occurrence of the event: 2010/12/16~2011/02/21
<BR>
3. Transaction volume (e.g.XX square meters, equivalent to XX p&#146;ing), unit price, total transaction
price: Transaction volume: one batch; average unit price: $ 619,920,648 NTD; total transaction
price: $ 619,920,648 NTD
<BR>
4. Counterparty to the trade and its relationship with the company (if the trading counterpart is a
natural person and is not an actual related party of the Company, the name of the trading
counterpart is not required to be disclosed): Applied Materials South East; non-related party
transaction
<BR>
5. Where the counterpart to the trade is an actual related party, a public announcement shall also
include the reason for choosing the related party as trading counterpart and the identity of the
previous owner (including its relationship with the company and the trading counterpart), price of
transfer and the date of acquisition: Not applicable
<BR>
6. Where a person who owned the property within the past five years has been an actual related
person of the company, a public announcement shall also include the dates and prices of acquisition
and disposal by the related person and the person&#146;s relationship to the company at those times: Not
applicable
<BR>
7. Anticipated loss or profit from the disposal (not applicable in cases of acquisition of assets)
(where originally deferred, the status or recognition shall be stated and explained): Not
applicable
<BR>
8.Terms of delivery or payment (including payment period and monetary amount): Base on purchase
order payment term.
<BR>
9.The manner of deciding on this transaction (such as tender invitation, price comparison, or price
negotiation), the reference basis for the decision on price and the decision-making department:
transaction: price negotiation; the reference basis for the decision on price: market price. The
decision-making department: the Selection Meeting
<BR>
10.Name of the professional appraisal institution and its appraisal amount: Not applicable
<BR>
11.Reason for any significant discrepancy with the transaction amount, and opinion of the
certifying CPA: Not applicable
<BR>
12.Is the appraisal report price a limited price or specific price?: Not applicable
<BR>
13.Has an appraisal report not yet been obtained?: Not applicable
<BR>
14.Reason an appraisal report has not yet been obtained: Not applicable
<BR>
15.Broker and broker&#146;s fee: Not applicable
<BR>
16.Concrete purpose or use of the acquisition or disposition: To produce integrated circuits
<BR>
17.Do the directors have any objection to the present transaction?: No
<BR>
18.Any other matters that need to be specified: None


<P align="right" style="font-size: 12pt"><B>Exhibit&nbsp;99.6</B>



<P align="center" style="font-size: 12pt"><B>Represent subsidiary MOS Art Pack Corporation to announce liquidation</B>



<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>1.Date of occurrence of the event:2011/02/23</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>2.Company name:MOS Art Pack Corporation</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>3.Relationship to the Company (please enter &#147;head office&#148; or &#147;affiliate company&#148;):affiliate company</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>4.Reciprocal shareholding ratios:73.34%</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>5.Cause of occurrence:To facilitate future technology development, after thorough evaluation, it is
proposed that UMC absorb MAP&#146;s technical team and equipment; as such, the board of MAP
proposed and passed a resolution to dissolve and liquidate the company.</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>6.Countermeasures: None</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>7.Any other matters that need to be specified: None</TD>
</TR>

</TABLE>


<P align="right" style="font-size: 12pt"><B>Exhibit&nbsp;99.7</B>



<P align="center" style="font-size: 12pt"><B>United Microelectronics Corporation</B><BR>
January&nbsp;10, 2011



<P align="left" style="font-size: 12pt">This is to report the changes or status of 1) Sales volume 2) Funds lent to other parties 3)
Endorsements and guarantees 4) Financial derivative transactions for the period of January&nbsp;2011.


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">1)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Sales volume (NT$ Thousand)</TD>
</TR>

</TABLE>

<DIV align="center">
<TABLE style="font-size: 12pt" cellspacing="0" border="0" cellpadding="0" width="95%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="26%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="17%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="4%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="4%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD>
</TR>
<TR style="font-size: 12pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Period</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><B>Items</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #000000"><B>2011</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #000000"><B>2010</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #000000"><B>Changes</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #000000"><B>%</B></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom" style="font-size: 12pt">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">January
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top"><I>Invoice amount</I>
</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">6,927,285</TD>
    <TD nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">5,944,227</TD>
    <TD nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">983,058</TD>
    <TD nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">16.54</TD>
    <TD nowrap valign="top">%</TD>
</TR>
<TR valign="bottom" style="font-size: 12pt">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px"><I>2011&nbsp;year to date</I>
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top"><I>Invoice amount</I>
</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">6,927,285</TD>
    <TD nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">5,944,227</TD>
    <TD nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">983,058</TD>
    <TD nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">16.54</TD>
    <TD nowrap valign="top">%</TD>
</TR>
<TR valign="bottom" style="font-size: 12pt">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">January
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top"><I>Net sales</I>
</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">9,525,055</TD>
    <TD nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">8,600,453</TD>
    <TD nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">924,602</TD>
    <TD nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">10.75</TD>
    <TD nowrap valign="top">%</TD>
</TR>
<TR valign="bottom" style="font-size: 12pt">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px"><I>2011&nbsp;year to date</I>
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top"><I>Net sales</I>
</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">9,525,055</TD>
    <TD nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">8,600,453</TD>
    <TD nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">924,602</TD>
    <TD nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">10.75</TD>
    <TD nowrap valign="top">%</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">2)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Funds lent to other parties (NT$ Thousand) : None</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">3)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Endorsements and guarantees (NT$ Thousand) : None</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">4)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Financial derivatives transactions</TD>
</TR>

</TABLE>


<P align="left" style="font-size: 12pt">a Hedging purpose : NT$ thousand
<BR>
<B><I>UMC</I></B>

<DIV align="center">
<TABLE style="font-size: 12pt" cellspacing="0" border="0" cellpadding="0" width="95%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="68%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="9%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="9%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 12pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><I>Financial instruments</I></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #000000">Forwards</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #000000">IRS</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom" style="font-size: 12pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px"><I>Deposit Paid</I></DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">0</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">0</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="font-size: 12pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px"><I>Royalty Income (Paid)</I></DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">0</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">0</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="font-size: 12pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px"><I>Unwritten-off Trading
Contracts</I></DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">1,745,400</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">&#151;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="font-size: 12pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px"><I>Fair Value</I></DIV></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right">&nbsp;</TD>
    <TD align="right">(7,494</TD>
    <TD nowrap>)</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">0</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="font-size: 12pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px"><I>Net Profit from Fair Value</I></DIV></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right">&nbsp;</TD>
    <TD align="right">(10,352</TD>
    <TD nowrap>)</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">0</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="font-size: 12pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px"><I>Written-off Trading Contracts</I></DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">1,538,376</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">0</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="font-size: 12pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px"><I>Realized profit (loss)</I></DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">15,948</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">0</TD>
    <TD>&nbsp;</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>

<DIV align="center">
<TABLE style="font-size: 12pt" cellspacing="0" border="0" cellpadding="0" width="95%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="92%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 12pt" valign="bottom">
    <TD nowrap align="left">b Trading purpose : NT$</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">&nbsp;</TD>
</TR>
<TR style="font-size: 12pt" valign="bottom">
    <TD nowrap align="left">thousand</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">&nbsp;</TD>
</TR>
<TR style="font-size: 12pt" valign="bottom">
    <TD nowrap align="left"><B><I>UMC&#146;s subsidiaries</I></B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">&nbsp;</TD>
</TR>
<TR style="font-size: 12pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 1px solid #000000">Financial instruments</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #000000"><B>ECB Investment - Embedded derivatives</B></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom" style="font-size: 12pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px"><I>Deposit Paid</I></DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">0</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="font-size: 12pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px"><I>Royalty Income (Paid)</I></DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">0</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="font-size: 12pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px"><I>Unwritten-off Trading Contracts</I></DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">0</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="font-size: 12pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px"><I>Fair Value</I></DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">0</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="font-size: 12pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px"><I>Net Profit from Fair Value</I></DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">0</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="font-size: 12pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px"><I>Written-off Trading Contracts</I></DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">0</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="font-size: 12pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px"><I>Realized profit (loss)</I></DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">0</TD>
    <TD>&nbsp;</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="right" style="font-size: 12pt"><B>Exhibit&nbsp;99.8</B>



<P align="center" style="font-size: 12pt"><B>United Microelectronics Corporation</B><BR>
For the month of January, 2011



<P align="left" style="font-size: 12pt">This is to report 1) the trading of directors, executive officers and 10% shareholders of United
Microelectronics Corporation (&#147;UMC&#148;) (NYSE: UMC); 2) the pledge and clear of pledge of UMC common
shares by directors, executive officers and 10% shareholders of UMC;


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">1)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The trading of directors, supervisors, executive officers and 10% shareholders</TD>
</TR>

</TABLE>

<DIV align="center">
<TABLE style="font-size: 12pt" cellspacing="0" border="0" cellpadding="0" width="95%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="5%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="31%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="32%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="9%">&nbsp;</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom" style="font-size: 12pt">
    <TD align="left" valign="top"><I>Title</I>
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top"><I>Name</I>
</TD>
    <TD>&nbsp;</TD>
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px"><FONT style="font-size: 10pt"><I>Number of shares<BR>
held as of<BR>
December&nbsp;31, 2010</I></FONT>
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top"><FONT style="font-size: 10pt"><I>Number of shares held<BR>
as of<BR>
January&nbsp;31, 2011</I></FONT>
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top"><FONT style="font-size: 10pt"><BR>
<BR>
<I>Changes</I></FONT></TD>
</TR>
<TR style="font-size: 1px">
    <TD align="left" valign="top" style="border-top: 1px solid #000000">&nbsp;
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top" style="border-top: 1px solid #000000">&nbsp;
</TD>
    <TD>&nbsp;</TD>
    <TD valign="top" style="border-top: 1px solid #000000"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top" style="border-top: 1px solid #000000">&nbsp;
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>
<TR valign="bottom" style="font-size: 10pt">
    <TD align="left" valign="top"><FONT style="font-size: 12pt">N/A</FONT>
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top"><BR>
</TD>
    <TD>&nbsp;</TD>
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px"><BR>
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top"><BR>
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top"><BR></TD>
</TR>
<TR style="font-size: 1px">
    <TD align="left" valign="top" style="border-top: 1px solid #000000">&nbsp;
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top"><BR>
</TD>
    <TD>&nbsp;</TD>
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px"><BR>
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top"><BR>
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top"><BR></TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">2)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The pledge and clear of pledge of UMC common shares by directors, executive officers and 10%
shareholders:</TD>
</TR>

</TABLE>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="95%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="20%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
</TR>
<TR style="font-size: 10pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><I>Number of shares</I></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><I>Number of shares held</I></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center">&nbsp;</TD>
</TR>
<TR style="font-size: 10pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><I>held as of</I></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><I>as of</I></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center">&nbsp;</TD>
</TR>
<TR style="font-size: 10pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><I>Title</I></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><I>Name</I></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><I>December 31, 2010</I></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><I>January 31, 2011</I></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><I>Changes</I></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom" style="font-size: 10pt">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px"><FONT style="font-size: 12pt">N/A</FONT>
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top"><FONT style="font-size: 12pt"><BR></FONT>
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top"><FONT style="font-size: 12pt"><BR></FONT>
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top"><FONT style="font-size: 12pt"><BR></FONT>
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top"><FONT style="font-size: 12pt"><BR></FONT></TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>



<P align="center" style="font-size: 10pt; display: none">2




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