The percentage of revenue contributed from Europe grew to 8% due to increasing demand on consumer and wireless communication products in 2Q07. The percentage of revenue contributed from North America and Asia Pacific remained at 47% and 43%, respectively.

                              Revenue Breakdown by Region
    Region             2Q07    1Q07     4Q06     3Q06     2Q06
    North America      47%      47%      53%      60%      51%
    Asia Pacific       43%      43%      37%      27%      35%
    Europe              8%       7%       7%      10%      11%
    Japan               2%       3%       3%       3%       3%

The percentage of revenue from 90nm and below decreased to 17% in 2Q07 due to soft orders from computer and programmable logic customers in 1Q07. The percentage of revenue from 0.13um grew to 25% in 2Q07 due to increased orders from some consumer customers. The percentage of revenue from 0.13um and below technologies in 2Q07 increased to 42%, compared with 37% in 1Q07.

                                  Revenue Breakdown by Geometry
    Geometry                2Q07     1Q07     4Q06     3Q06     2Q06
    < =90nm                  17%      21%      21%      21%      16%
    0.13um                   25%      16%      20%      25%      22%
    0.15um                    9%      11%       9%       7%       9%
    0.15um < x < =0.18um     20%      19%      18%      19%      20%
    0.18um < x < =0.25um      4%       6%       6%       6%       6%
    0.25um < x < =0.35um     18%      19%      17%      13%      18%
    0.5um and above           7%       8%       9%       9%       9%

The contribution from IDM customers slightly increased to 25% in 2Q07 from 24% in 1Q07 due to inventory replenishment.

                       Revenue Breakdown by Customer Type
    Customer Type           2Q07    1Q07      4Q06     3Q06     2Q06
    Fabless                  75%     76%       63%      56%      63%
    IDM                      25%     24%       37%      44%      37%
    System                    0%      0%        0%       0%       0%

Revenue from the consumer market segment increased and accounted for 26% of total revenue in 2Q07. Most of the increase was due to the relatively better demand for DTV and set-top-box. Revenue from the computer market decreased to 17% of total revenue in 2Q07, primarily due to inventory correction by some PC chipset and optical storage customers.

                       Revenue Breakdown by Application (1)
    Application             2Q07    1Q07     4Q06     3Q06     2Q06
    Computer                 17%     18%      15%      15%      14%
    Communication            55%     56%      61%      55%      56%
    Consumer                 26%     24%      22%      28%      28%
    Memory                    1%      1%       1%       1%       1%
    Others                    1%      1%       1%       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.


    Blended Average Selling Price Trend

    The blended average selling price (ASP) was flat quarter-over-quarter.
    (To view ASP trend, visit

http://www.umc.com/english/investors/2Q07_ASP_trend.asp )

    Shipment and Utilization Rate (Note 4)

    Note 4
    Utilization Rate = Quarterly  Wafer  Out  /  Quarterly  Capacity