Segment, Product and Geographic Information (Tables)

12 Months Ended

Dec. 31, 2025

Segment, Product and Geographic Information

Schedule of segment reporting


		Year Ended December 31, 2023
					Non-driver		Consolidated
		Driver IC			products		Total

		(in thousands)
Segment revenues		$	804,840		140,588			945,428
Segment operating income (loss)		$	75,282		(32,070)			43,212
Non operating income, net								1,181
Consolidated profit before income taxes							$	44,393
Significant noncash items:
Share-based compensation		$	1,608		1,055			2,663
Depreciation and amortization		$	8,601		11,721			20,322


		Year Ended December 31, 2024
					Non-driver		Consolidated
		Driver IC			products		Total

		(in thousands)
Segment revenues		$	751,326		155,476			906,802
Segment operating income (loss)		$	92,699		(24,478)			68,221
Non operating income, net								9,114
Consolidated profit before income taxes							$	77,335
Significant noncash items:
Share-based compensation		$	697		550			1,247
Depreciation and amortization		$	11,115		11,239			22,354


		Year Ended December 31, 2025
					Non-driver		Consolidated
		Driver IC			products		Total

		(in thousands)
Segment revenues		$	665,797		166,376			832,173
Segment operating income (loss)		$	61,737		(17,611)			44,126
Non operating income, net								10,741
Consolidated profit before income taxes							$	54,867
Significant noncash items:
Share-based compensation		$	391		339			730
Depreciation and amortization		$	13,524		9,025			22,549

Schedule of segment revenues in geographic region


		For the year ended December 31, 2023
					Non-driver		Consolidated
		Driver IC			products		Total

		(in thousands)
China		$	632,363		88,395		720,758
Taiwan			119,289		22,494		141,783
Korea			22,584		4,813		27,397
Japan			27,763		9,034		36,797
America			2,841		11,309		14,150
Mexico			—		627		627
Others			—		3,916		3,916
		$	804,840		140,588		945,428


		For the year ended December 31, 2024
					Non-driver		Consolidated
		Driver IC			products		Total

		(in thousands)
China		$	567,137		98,421		665,558
Taiwan			116,145		22,183		138,328
Korea			51,672		10,015		61,687
Japan			16,372		8,203		24,575
America			—		12,545		12,545
Mexico			—		2,807		2,807
Others			—		1,302		1,302
		$	751,326		155,476		906,802


		For the year ended December 31, 2025
					Non-driver		Consolidated
		Driver IC			products		Total

		(in thousands)
China		$	516,096		97,722		613,818
Taiwan			98,969		23,557		122,526
Korea			39,460		10,128		49,588
Japan			11,272		3,687		14,959
America			—		21,345		21,345
Mexico			—		4,847		4,847
Others			—		5,090		5,090
		$	665,797		166,376		832,173

Schedule of segment revenues from major product lines


		For the year ended December 31, 2023
					Non-driver		Consolidated
		Driver IC			products		Total

		(in thousands)
Display drivers for large-sized applications		$	175,666		—		175,666
Display drivers for small and medium-sized applications			629,174		—		629,174
Non-driver products			—		140,588		140,588
		$	804,840		140,588		945,428


		For the year ended December 31, 2024
					Non-driver		Consolidated
		Driver IC			products		Total

		(in thousands)
Display drivers for large-sized applications		$	125,936		—		125,936
Display drivers for small and medium-sized applications			625,390		—		625,390
Non-driver products			—		155,476		155,476
		$	751,326		155,476		906,802


		For the year ended December 31, 2025
					Non-driver		Consolidated
		Driver IC			products		Total

		(in thousands)
Display drivers for large-sized applications		$	90,665		—		90,665
Display drivers for small and medium-sized applications			575,132		—		575,132
Non-driver products			—		166,376		166,376
		$	665,797		166,376		832,173

Schedule of carrying values of company's tangible long-lived assets


		December 31,			December 31,
		2024			2025

		(in thousands)
Taiwan		$	117,784		116,829
U.S.			1,433		1,299
China			1,688		1,392
Korea			286		476
Japan			89		35
		$	121,280		120,031

Schedule of revenues from significant customers


		Year ended December 31,
		2023			2024		2025

		(in thousands)
Driver IC segment:
Customer A and its affiliates		$	234,581		207,725		176,457
Customer C			102,719		73,696		61,701
		$	337,300		281,421		238,158
Non-driver products segment:
Customer A and its affiliates		$	36,770		31,276		23,648
Customer C			1,120		1,868		3,054
		$	37,890		33,144		26,702

Schedule of accounts receivable from significant customers


		December 31,			December 31,
		2024			2025

		(in thousands)
Customer A and its affiliates		$	69,006		57,804
Customer C			20,521		12,122
		$	89,527		69,926

Schedule of contract liabilities in relation to revenue from contracts with customers


		December 31,			December 31,
		2024			2025

		(in thousands)
Contract liabilities-current		$	10,622		3,322