Revenue contribution from 22/28nm amounted to 20% of the wafer revenue, while 40nm contribution stayed at 18% of sales.

Revenue Breakdown by Customer Type
Customer Type	4Q21	3Q21	2Q21	1Q21	4Q20
Fabless	86%	86%	84%	86%	87%
IDM	14%	14%	16%	14%	13%

Revenue from fabless customers accounted for 86% of revenue.

Revenue Breakdown by Application (1)
Application	4Q21	3Q21	2Q21	1Q21	4Q20
Computer	17%	17%	17%	16%	16%
Communication	46%	46%	47%	46%	49%
Consumer	26%	27%	26%	27%	25%
Others	11%	10%	10%	11%	10%

Revenue from the communication segment remained unchanged at 46%, while business from computer applications also stayed at 17%. Business from consumer applications declined to 26% as other segments accounted represented 11% of revenue.

(1) Computer consists of ICs such as CPU, GPU, HDD controllers, DVD/CD-RW control ICs, PC chipset, audio codec, keyboard controller, monitor scaler, USB, I/O chipset, WLAN. Communication consists of handset components, broadband, bluetooth, Ethernet, LAN, DSP, etc. Consumer consists of ICs used for DVD players, DTV, STB, MP3/MP4, flash controller, game consoles, DSC, smart cards, toys, etc.

Blended ASP Trend

Blended average selling price (ASP) grew in 4Q21.

(To view blended ASP trend, please click here for 4Q21 ASP)

Shipment and Utilization Rate³

Wafer Shipments
	4Q21	3Q21	2Q21	1Q21	4Q20
Wafer Shipments (8” K equivalents)	2,546	2,503	2,440	2,372	2,293
Quarterly Capacity Utilization Rate
	4Q21	3Q21	2Q21	1Q21	4Q20
Utilization Rate	100%+	100%+	100%+	100%	99%
Total Capacity (8” K equivalents)	2,419	2,383	2,370	2,280	2,311

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