Total liabilities decreased by NT$2.54 billion to NT$23.31 billion in 4Q08. UMC's Debt to Equity ratio remained unchanged at 13%.
Analysis of Revenue (Note 3) Revenue Breakdown by Region Region 4Q08 3Q08 2Q08 1Q08 4Q07 North America 57% 60% 50% 58% 51% Asia Pacific 31% 32% 35% 29% 37% Europe 10% 6% 13% 11% 10% Japan 2% 2% 2% 2% 2%
The percentage of revenue from the North America and Asia Pacific regions decreased to 57% and 31% in 4Q08.
Revenue Breakdown by Geometry Geometry 4Q08 3Q08 2Q08 1Q08 4Q07 65nm 8% 7% 5% 7% 3% 90nm 27% 31% 31% 30% 23% 90nm < x <=0.13um 22% 20% 21% 21% 22% 0.13um < x <=0.18um 23% 21% 20% 22% 27% 0.18um < x <=0.35um 15% 16% 18% 14% 18% 0.5um and above 5% 5% 5% 6% 7%
The percentage of revenue from advanced 65nm business increased to 8%. The percentage of revenue from 90nm and below was 35% in 4Q08.
Revenue Breakdown by Customer Type Customer Type 4Q08 3Q08 2Q08 1Q08 4Q07 Fabless 80% 74% 71% 70% 76% IDM 20% 26% 29% 30% 24% System 0% 0% 0% 0% 0% The percentage of revenue from Fabless customers increased to 80% in 4Q08 from 74% in 3Q08. Revenue Breakdown by Application (1) Application 4Q08 3Q08 2Q08 1Q08 4Q07 Computer 15% 16% 17% 21% 19% Communication 61% 59% 58% 56% 56% Consumer 22% 23% 22% 21% 23% Memory 1% 1% 1% 1% 1% Others 1% 1% 2% 1% 1% (1) Computer consists of ICs such as HDD controllers, DVD-ROM/CD-ROM drives ICs, LCD drivers, graphic processors, and PDAs. Communication consists of xDSL, DSP, WLAN, LAN controllers, handset components, caller ID devices, etc. Consumer consists of ICs used for DVD players, game consoles, digital cameras, smart cards, toys, etc. Memory consists of DRAM, SRAM, Flash, EPROM, ROM, and EEPROM.
Revenue from the communication segment increased to 61% of total revenue in 4Q08. The percentage of revenue from the computer segment decreased to 15% due to weak demand for PC related components.
Note 3: Revenue in this section represents wafer sales.