The Group uses operating profit (loss) as the measurement for segment profit (loss) and the basis of performance assessment. There was no material inconsistency between the accounting policies of the operating segment and the accounting policies described in Note 2.
| 2015 | ||||||||||||||||||||||||||||||||
| Testing | Assembly | LCDD | Bumping | Others | Elimination | Total continuing operations |
Discontinued operations |
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| NT$000 | NT$000 | NT$000 | NT$000 | NT$000 | NT$000 | NT$000 | NT$000 | |||||||||||||||||||||||||
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Revenue |
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External customers |
4,546,394 | 5,525,582 | 5,396,001 | 3,369,112 | — | — | 18,837,089 | 1,032,302 | ||||||||||||||||||||||||
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Inter-segment |
172,264 | 528 | — | — | 44,577 | (217,369 | ) | — | — | |||||||||||||||||||||||
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Total revenue |
4,718,658 | 5,526,110 | 5,396,001 | 3,369,112 | 44,577 | (217,369 | ) | 18,837,089 | 1,032,302 | |||||||||||||||||||||||
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Operating profit (loss) |
1,203,169 | 117,127 | 1,354,398 | 28,605 | (47,191 | ) | (7,681 | ) | 2,648,427 | (61,214 | ) | |||||||||||||||||||||
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Depreciation and amortization |
(646,545 | ) | (550,819 | ) | (1,157,809 | ) | (548,234 | ) | (357 | ) | 543 | (2,903,221 | ) | (118,702 | ) | |||||||||||||||||
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Interest income |
— | — | — | — | 60,552 | (1,690 | ) | 58,862 | 9,421 | |||||||||||||||||||||||
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Interest expense |
— | — | — | — | (128,311 | ) | 1,690 | (126,621 | ) | (414 | ) | |||||||||||||||||||||
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Share of profit of associates |
— | — | — | — | 25,346 | 5,923 | 31,269 | — | ||||||||||||||||||||||||
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Purchase of property, plant and equipment |
796,964 | 895,767 | 1,366,389 | 589,615 | 2,477 | (6,652 | ) | 3,644,560 | — | |||||||||||||||||||||||
| 2016 | ||||||||||||||||||||||||||||||||
| Testing | Assembly | LCDD | Bumping | Others | Elimination | Total continuing operations |
Discontinued operations |
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| NT$000 | NT$000 | NT$000 | NT$000 | NT$000 | NT$000 | NT$000 | NT$000 | |||||||||||||||||||||||||
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Revenue |
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External customers |
4,587,054 | 5,880,780 | 4,920,302 | 2,999,457 | — | — | 18,387,593 | 1,005,166 | ||||||||||||||||||||||||
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Inter-segment |
— | 1,103 | — | 510 | 41,670 | (43,283 | ) | — | — | |||||||||||||||||||||||
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Total revenue |
4,587,054 | 5,881,883 | 4,920,302 | 2,999,967 | 41,670 | (43,283 | ) | 18,387,593 | 1,005,166 | |||||||||||||||||||||||
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Operating profit (loss) |
1,346,874 | 143,220 | 963,698 | (341,356 | ) | (82,331 | ) | (31,530 | ) | 1,998,575 | (146,263 | ) | ||||||||||||||||||||
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Depreciation and amortization |
(664,026 | ) | (635,481 | ) | (1,167,908 | ) | (622,412 | ) | (565 | ) | 488 | (3,089,904 | ) | (141,375 | ) | |||||||||||||||||
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Interest income |
— | — | — | — | 51,756 | (13,202 | ) | 38,554 | 3,753 | |||||||||||||||||||||||
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Interest expense |
— | — | — | — | (144,545 | ) | — | (144,545 | ) | (606 | ) | |||||||||||||||||||||
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Share of profit (loss) of associates |
— | — | — | — | (128,866 | ) | 157,790 | 28,924 | — | |||||||||||||||||||||||
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Purchase of property, plant and equipment |
771,500 | 554,162 | 910,457 | 887,144 | 49 | — | 3,123,312 | 1,567,683 | ||||||||||||||||||||||||
| 2017 | ||||||||||||||||||||||||||||||||||||||||
| Testing | Assembly | LCDD | Bumping | Others | Elimination | Total continuing operations |
Total continuing operations |
Discontinued operations |
Discontinued operations |
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| NT$000 | NT$000 | NT$000 | NT$000 | NT$000 | NT$000 | NT$000 | US$000 | NT$000 | US$000 | |||||||||||||||||||||||||||||||
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Revenue |
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External customers |
4,838,246 | 5,259,281 | 4,789,869 | 3,053,459 | — | — | 17,940,855 | 605,292 | 227,095 | 7,662 | ||||||||||||||||||||||||||||||
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Inter-segment |
— | — | 247 | — | 35,808 | (36,055 | ) | — | — | — | — | |||||||||||||||||||||||||||||
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Total revenue |
4,838,246 | 5,259,281 | 4,790,116 | 3,053,459 | 35,808 | (36,055 | ) | 17,940,855 | 605,292 | 227,095 | 7,662 | |||||||||||||||||||||||||||||
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Operating profit (loss) |
1,448,939 | (55,198 | ) | 1,285,495 | (336,123 | ) | (100,545 | ) | (2,687 | ) | 2,239,881 | 75,570 | (25,394 | ) | (857 | ) | ||||||||||||||||||||||||
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Depreciation and amortization |
(673,393 | ) | (597,500 | ) | (1,048,587 | ) | (579,605 | ) | (503 | ) | 310 | (2,899,278 | ) | (97,816 | ) | — | — | |||||||||||||||||||||||
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Interest income |
— | — | — | — | 53,123 | — | 53,123 | 1,792 | 464 | 16 | ||||||||||||||||||||||||||||||
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Interest expense |
— | — | — | — | (190,425 | ) | — | (190,425 | ) | (6,425 | ) | (2,414 | ) | (81 | ) | |||||||||||||||||||||||||
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Share of profit (loss) of associates |
— | — | — | — | 1,347,851 | (1,527,342 | ) | (179,491 | ) | (6,056 | ) | — | — | |||||||||||||||||||||||||||
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Purchase of property, plant and equipment |
836,894 | 655,879 | 2,615,153 | 594,765 | — | — | 4,702,691 | 158,660 | — | — | ||||||||||||||||||||||||||||||