Revenue contribution from 28nm grew to 13% while 40nm business represented 24% of sales.

Revenue Breakdown by Customer Type
Customer Type	2Q19	1Q19	4Q18	3Q18	2Q18
Fabless	93%	94%	92%	93%	92%
IDM	7%	6%	8%	7%	8%

Revenue from fabless customers decreased to 93% of revenue.

Revenue Breakdown by Application (1)
Application	2Q19	1Q19	4Q18	3Q18	2Q18
Computer	14%	15%	15%	19%	16%
Communication	52%	48%	44%	43%	47%
Consumer	28%	29%	30%	28%	28%
Others	6%	8%	11%	10%	9%

The communication segment accounted for 52% of sales, while revenue from consumer applications remained relatively flat at 28%. Computer related applications contributed 14% 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. Communication consists of handset components, broadband, WLAN, 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 for Foundry Segment

Blended average selling price (ASP) in 2Q19 slightly increased.

(To view ASP trend, visit http://www.umc.com/english/investors/2Q19_ASP_trend.asp)

Shipment and Utilization Rate³ for Foundry Segment

Wafer Shipments
	2Q19	1Q19	4Q18	3Q18	2Q18
Wafer Shipments (8” K equivalents)	1,730	1,611	1,711	1,804	1,846
Quarterly Capacity Utilization Rate
	2Q19	1Q19	4Q18	3Q18	2Q18
Utilization Rate	88%	83%	88%	94%	97%
Total Capacity (8” K equivalents)	1,970	1,937	1,958	1,938	1,918

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