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Equity Method Investments (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Nov. 30, 2020
IFRS Statement [Line Items] |  |  |
Carrying amount | $ 3,983 | $ 3,746 |
Holding | 100.00% |  |
Ganzin Technology Corp. [Member] |  |  |
IFRS Statement [Line Items] |  |  |
Principal Activities | Eye tracking chip and module |  |
Place of Incorporation and operation | Taipei, Taiwan |  |
Carrying amount | $ 577 | $ 1,156 |
Holding | 45.64% | 49.35% |
Iris Optronics Co Ltd. [Member] |  |  |
IFRS Statement [Line Items] |  |  |
Principal Activities | E-paper manufacturing and sales |  |
Place of Incorporation and operation | Tainan, Taiwan |  |
Carrying amount | $ 61 | $ 41 |
Holding | 1.25% | 1.25% |
ViewsilMicroelectronics (Kunshan) Limited [Member] |  |  |
IFRS Statement [Line Items] |  |  |
Principal Activities | IC design and sales |  |
Place of Incorporation and operation | Kunshan, China |  |
Carrying amount | $ 2,621 | $ 2,549 |
Holding | 49.00% | 49.00% |
Guangzhou Pixtalks Information Technology Co Ltd [Member] |  |  |
IFRS Statement [Line Items] |  |  |
Principal Activities | 3D structured light module |  |
Place of Incorporation and operation | Guangzhou, China |  |
Carrying amount | $ 724 |  | $ 758
Holding | 25.00% |  |

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