UMC Reports 2007 Second Quarter Results:
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UMC Reports 2007 Second Quarter Results:

Recovery Expected to Continue into 3Q07

    TAIPEI, Taiwan, Aug. 1 /Xinhua-PRNewswire-FirstCall/ --

    Second Quarter 2007 Overview (Note 1):
    -- Revenue increased 9% sequentially to NT$25.10 billion (US$764 million)
    -- Operating profit margin improved to 4.9% from 0.1% in 1Q07
    -- Net income was NT$4.91 billion (US$149 million)
    -- EPS of NT$0.28; EPADS of US$0.043

Note 1:

Unless otherwise stated, all financial figures discussed in this announcement are prepared in accordance with ROC GAAP, which differ in some material respects from generally accepted accounting principles in the United States. They are reviewed, unconsolidated, and represent comparisons among the three-month period ending June 30, 2007, the three-month period ending March 31, 2007, and the equivalent three-month period that ended June 30, 2006. For all 2Q07 results, New Taiwan Dollar (NT$) amounts have been converted into U.S. Dollars at the June 30, 2007 exchange rate of NT$32.86 per U.S. Dollar.

United Microelectronics Corporation (NYSE: UMC) (TSE: 2303) ("UMC" or "the Company"), a leading global semiconductor foundry, today announced its unconsolidated operating results for the second quarter of 2007.

"We noticed signs of recovery from our customers in the second quarter, leading to a 9.8% increase in wafer shipments," said Dr. Jackson Hu, CEO at UMC. "This increase contributed to a 9% growth in quarter-over-quarter revenue and a meaningful increase in operating income."

Dr. Hu continued, "Starting from June, we have seen a continuous reduction of our customers' inventory levels. In fact, quite a few of them are currently experiencing inventory levels that are lower than normal. This situation leads us to foresee strong demand across the board for all applications in Q3. Due to much improved product and customer mixes, we are taking full advantage of this seasonally strong demand. In Q3, total wafer shipment is expected to increase by 20%, while average utilization rate will be greater than 90%. ASP will stay flat. 12-inch fab utilization rates will be slightly stronger than the average loading for our 8-inch fabs, while our 6" fab will be fully loaded. In terms of revenue contribution, sales from 90nm and 65nm technologies will increase to 25%. Our CAPEX remains unchanged at US$1.0 billion to US$1.2 billion for 2007."

"On the advanced technology front, we continue to work with several customers on multiple products. The production yields for 65nm products have been very satisfactory. However, we have noticed that customer demand for 65nm product is still in the early stage of development, and a meaningful percentage of revenue from 65nm may not be seen until early 2008. For 45nm, we will have product tape-out in Q3. We believe that applications will make good use of the increasing chip density offered by Moore's Law, which will enable the integration of more and more features on a single chip. The future of the semiconductor industry will be defined by the proliferation of these SoCs. Electronic product companies will utilize these chips to roll out a continuous stream of innovative products that feature increased functionality, lower power consumption and higher performance, and current innovative products such as the game console Wii and the iPhone can be manufactured more cost effectively."



    Summary of Operating Results

    Operating Results
                                                 QoQ %             YoY %
    (Amount: NT$ million)     2Q07      1Q07     change   2Q06    change

    Revenue                  25,097    23,025      9.0   25,751    (2.5)
    Gross Profit              4,958     3,676     34.9    5,171    (4.1)
    Operating Expenses       (3,732)   (3,658)     2.0   (3,541)    5.4
    Operating Income          1,226        18   6711.1    1,630   (24.8)
    Non-op. Income
     (Expenses)               4,182     1,719    143.3    5,076   (17.6)
    Net Income                4,911     1,459    236.6    6,052   (18.9)
    EPS (NT$ per share)        0.28      0.08       --     0.34      --
        (US$ per ADS)         0.043     0.012       --    0.052      --

Revenue increased 9.0% quarter-over-quarter to NT$25.10 billion, from NT$23.03 billion in 1Q07. Gross profit was NT$4.96 billion, or 19.8% of revenue, compared to NT$3.68 billion, or 16.0% of 1Q07 revenue. Operating income of NT$1.23 billion increased 6711.1% sequentially. Better capacity utilization and activities on cost control were the key reasons for the increase in revenue, gross profit and operating income during the second quarter. Net income in 2Q07 was NT$4.91 billion, an increase of 236.6% compared with NT$1.46 billion in 1Q07.

Earnings per ordinary share (EPS) for the quarter were NT$0.28. Earnings per ADS (EPADS) were US$0.043. This compares with 1Q07 EPS of NT$0.08 and EPADS of US$0.012. One ADS represents five Taiwan-listed ordinary shares. The basic weighted average number of outstanding shares in 2Q07 was 17,780,114,848, compared with 17,775,610,526 shares in 1Q07 and 17,468,679,418 shares in 2Q06. The diluted weighted average number of outstanding shares was 18,413,194,360 in 2Q07, compared with 17,904,075,495 shares in 1Q07 and 18,138,816,706 shares in 2Q06. The fully diluted share count on June 30, 2007 was 18,416,674 thousand. On June 30, 2007, UMC held 1,342,067 thousands treasury shares acquired from the 7th, 8th, 9th, and 11th share buy-back programs. The 192,067 thousand treasury shares from the 7th buy-back program were expired in May/07 and will be retired in July/07.

Detailed Financials Section

Depreciation and amortization totaled NT$9.21 billion in 2Q07, compared with NT$9.19 billion in 1Q07. Depreciation within COGS of NT$7.90 billion went up by 3.3% from 1Q07. Other manufacturing costs within COGS increased to NT$12.24 billion sequentially due to increased wafer shipments. Total operating expenses increased by 2% to NT$3.73 billion. R&D expenses of NT$2.31 billion remained virtually flat from 1Q07. The total R&D expenses were 9.2% of revenue in 2Q07.



        COGS & Expenses
                                                  QoQ %               YoY %
    (Amount: NT$ million)     2Q07      1Q07      change    2Q06     change

    Revenue                 25,097    23,025       9.0    25,751      (2.5)
    COGS                   (20,139)  (19,349)      4.1   (20,580)     (2.1)
      Depreciation          (7,899)   (7,649)      3.3    (9,965)    (20.7)
      Other Mfg. Costs     (12,240)  (11,700)      4.6   (10,615)     15.3
    Gross Profit             4,958     3,676      34.9     5,171      (4.1)
    Gross Margin (%)          19.8%     16.0%       --      20.1%       --
    Total Operating Exp.    (3,732)   (3,658)      2.0    (3,541)      5.4
      G&A                     (691)     (678)      1.9      (676)      2.2
      Sales & Marketing       (732)     (650)     12.6      (761)     (3.8)
      R&D                   (2,309)   (2,330)     (0.9)   (2,104)      9.7
    Operating Income         1,226        18    6711.1     1,630     (24.8)
    Operating Margin (%)       4.9%      0.1%       --       6.3%       --

Net non-operating income during 2Q07 was NT$4.18 billion. Gains on the disposal of investments were NT$2.63 billion, primarily from the EB1 conversion of AU Optronics shares. Net investment income was NT$760 million, which consisted of NT$434 million of investment income accounted for under the equity method, and NT$517 million of income on valuation of financial assets in 2Q07.



    Non-operating Income (Expenses)
    (Amount: NT$ million)                   2Q07     1Q07     2Q06
    Net Non-operating Income (Exp.)        4,182    1,719    5,076
      Net Interest Income (Expense)          349      260      176
      Net Investment Income (Loss)           760      109      442
      Gain on Disposal of Investment       2,634    1,624    4,456
      Exchange Gain (Loss)                   (46)      17       49
      Others                                 485     (291)     (47)

Cash inflow from operations was NT$7.58 billion in 2Q07. Compared to 1Q07, the lower operating cash flow figure mainly reflects the increase on notes and accounts receivable under higher operating income. The investing cash outflow primarily reflects the NT$8.97 billion of CAPEX in 2Q07. The NT$2.26 billion of financing cash outflow is primarily from NT$2.25 billion of corporate bonds repayment. Over the next 12 months, we expect to repay NT$10.5 billion in unsecured corporate bonds.



    Cash Flow Summary
                                     For the 3-Month     For the 3-Month
    (Amount: NT$ million)            Period Ended        Period Ended
                                     Jun. 30, 2007       Mar. 31, 2007
    Cash Flow from Operations           7,583               9,732
      Net Income (Loss)                 4,911               1,459
      Depreciation & Amortization       9,212               9,192
      Changes in working capital       (2,766)               (192)
      Others                           (3,774)               (727)
    Cash Flow from Investing           (9,224)            (12,235)
      Capital Expenditures             (8,974)            (12,521)
      Others                             (250)                286
    Cash Flow from Financing           (2,262)                188
    Effect of Exchange Rate               (28)                (91)
    Net Cash Flow                      (3,931)             (2,406)

Cash and cash equivalents decreased by NT$3.93 billion to NT$77.06 billion due to cash outflow for capacity expansion and bonds repayment. Days sales outstanding (Note 2) decreased to 49 days, and average inventory turnover remained at 48 days.

Note 2

Days Sales Outstanding = 365/[(Operating revenues for three-month period end *4)/[(Beginning NR&AR balance, net + Ending NR&AR balance, net)/2]]

Average Inventory Turnover = 365/[(COGS for three-month period end *4)/[(Beginning Inventory balance, net + Ending Inventory balance, net)/2]]



    Current Assets
    (Amount: NT$ billion)             2Q07       1Q07       2Q06
    Cash & Cash Equivalents          77.06      80.99      90.05
    Notes & Accounts Receivable      14.15      12.85      12.56
      Days Sales Outstanding            49         50         43
    Inventory                        10.91       9.96      10.38
      Avg. Inventory Turnover           48         48         45
    Total Current Assets            113.73     115.43     119.57

Total liabilities increased by NT$2.6 billion to NT$66.01 billion in 2Q07. The increase was primarily due to the NT$12.46 billion of dividends payable. The company's debt to equity ratio remained at 23%.



    Liabilities
    (Amount: NT$ billion)             2Q07       1Q07       2Q06
    Total Current Liabilities        54.92      41.81      36.97
      Accounts Payable                4.96       4.65       4.73
      Short-term Credit / Bonds      23.02      17.83      10.31
      Others                         26.94      19.33      21.93
    Long-term Liabilities             7.49      17.99      30.28
    Total Liabilities                66.01      63.41      70.87
    Debt to Equity                      23%        22%        26%



    Analysis of Revenue (Note 3)

    Note 3
    Revenue in this section represents wafer sales.

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

804 thousand 8-inch equivalent wafers were shipped in 2Q07, a 9.8% increase from 732 thousand 8-inch equivalents shipped in the previous quarter. Overall utilization rate for the quarter was 76%.



                                 Wafer Shipments
                        2Q07    1Q07    4Q06    3Q06    2Q06
    Wafer Shipments
    ('000 8-inch eq.)    804    732     783      799    786


                       Quarterly Capacity Utilization Rate
                        2Q07    1Q07     4Q06   3Q06     2Q06
    Utilization Rate     76%    74%(1)    76%    82%      80%
    Total Capacity
    ('000 8-inch eq.)  1,070    1,043   1,020   1,010    1,002


    (1) 1Q07 utilization rate was calculated based on 1Q07 available capacity,
        which is about 95% of total capacity after factoring in a 5%
        productivity loss due to annual scheduled maintenance.



    Capacity (Note 5)

Note 5

Estimated capacity numbers are based on calculated maximum output rather than designed capacity. The actual capacity numbers may differ depending upon equipment delivery schedules, pace of migration to more advanced process technologies, and other factors affecting production ramp up.

Total capacity during the second quarter was 1,070 thousand 8-inch equivalent wafers. Compared to 1Q07, the increase of 27 thousand 8-inch equivalent wafers was mainly due to capacity expansion at Fab 12A and Fab 12i. Estimated installed capacity in the third quarter is 1,095 thousand 8-inch equivalent wafers. The increase in estimated capacity during the third quarter is primarily due to the additional 12-inch capacity expansion for 300mm fabs.




       Annual Capacity in thousands of 8-inch wafer equivalents

        FAB             Geometry       2006   2005   2004   2003
                          (um)
       Fab 6A  6"       3.5 - 0.45      328    344    346    352
       Fab 8AB 8"       0.5 - 0.25      816    816    796    801
       Fab 8C  8"      0.35 - 0.15      400    401    386    325
       Fab 8D  8"      0.18 - 0.09      252    274    256    238
       Fab 8E  8"       0.5 - 0.18      406    404    401    354
       Fab 8F  8"      0.25 - 0.15      372    378    349    342
       Fab 8S  8"(1)   0.25 - 0.15      276    278    131      0
       Fab 12A 12"     0.18 - 0.065     754    597    392    234
       Fab 12i 12" (2) 0.13 - 0.065     413    363    101      0
       Total (3)                      4,017  3,855  3,158  2,646
       YoY Growth Rate                   4%    22%    19%     3%


       Quarterly Capacity in thousands of 8-inch wafer equivalents

       FAB            3Q07E   2Q07  1Q07  4Q06

       Fab 6A           82     82    82    82
       Fab 8AB         204    204   204   204
       Fab 8C          100    100   100   100
       Fab 8D           65     65    65    63
       Fab 8E          102    102   102   102
       Fab 8F           93     93    93    93
       Fab 8S           69     69    69    69
       Fab 12A         220    215   200   193
       Fab 12i         160    140   128   114
       Total         1,095  1,070 1,043 1,020


    (1) Former fab of SiSMC, which was acquired from Silicon Integrated
        Systems in July 2004.
    (2) Former fab of UMCi, a UMC wholly owned subsidiary in December 2004
        that was merged into UMC in April 2005
    (3) One 6-inch wafer is converted into 0.5625(62/82) 8-inch equivalent
        wafer; one 12-inch wafer is converted into 2.25(122/82) 8-inch
        equivalent wafers.



    CAPEX

Capital expenditure for UMC during 2Q07 was US$276 million. Accumulated CAPEX in 1H07 was US$654 million. UMC's 2007 full year CAPEX plans remain unchanged at US$1~1.2 billion.



    UMC Capital Expenditure by Year -- in US$ billion

        Year         2006      2005     2004    2003    2002    2001
       CAPEX         $1.0    $0.7(1)    $1.5    $0.4    $0.8    $1.1

    2007 CAPEX
                    8" fab    12" fab  12" R&D    Total
         UMC           2%       80%       18%   US$1~1.2billion


    (1) 2005 CAPEX contained UMC 2005 full year CAPEX and UMCi CAPEX during
        1Q05.



    Recent Developments / Announcements


    Jul. 12, 2007    ATDF and UMC to Collaborate in Evaluating and
                     Commercializing New Technologies

    Jul. 10, 2007    MaxLinear Aligns with UMC for Production of World's
                     SmallestSilicon Tuner Device

    Jul. 5, 2007     Melexis Collaborates with UMC to Deliver Chips for
                     Automobile Applications

    Jun. 11, 2007    UMC Shareholders Approve NT$0.7 Dividend for Fiscal Year
                     2006 at Annual Shareholders Meeting
                     At the meeting, shareholders approved:
                     -- Cash dividend of NT$12.46 billion (estimated NT$0.7
                        per share).
                     -- Employee cash bonus of NT$2.32 billion.
                     -- Capital reduction of NT$57.39 billion. The capital
                        reduction is subject to approval from Financial
                        Supervisory Commission. Related procedures and
                        timetables will be announced after the approval from
                        the FSC.

    Jun. 04, 2007    UMC and ARM Partner to Deliver Comprehensive SOI
                     Solutions for 65nm Technology

    May 23, 2007     Mentor Graphics and UMC Deliver Analog Mixed Signal
                     Reference Flow

    May 22, 2007     UMC Holds Grand Opening Ceremony for its New R&D
                     Headquarters

    May 09, 2007     UMC Files Form 20-F for 2006 with US Securities and
                     Exchange Commission

    May 02, 2007     UMC 1Q 2007 Financial Results

Please visit UMC's website http://www.umc.com/english/news/index.asp for further details regarding the above announcements.

    Third Quarter of 2007 Outlook & Guidance

    Quarter-over-quarter Guidance:

    -- Wafer shipments: to increase by approximately 20% points
    -- Wafer ASP in US$: flat from the previous quarter
    -- Capacity utilization rate: approximately 90%
    -- Profitability: gross profit margin to improve by approximately 5%
       points
    -- Percentage of 90nm & below revenue: approximately 25%
    -- The communication segment is expected to be the strongest followed by
       the computer and consumer segments
    -- 2007 capex budget: US$1.0-1.2 billion

    Conference Call / Webcast Announcement

    Wednesday, August 1, 2007

    Time: 8:00 PM (Taipei) / 8:00 AM (New York) / 1:00 PM (London)

    Dial-in numbers and Access Codes:
    Asia/Europe:    +1-617-213-8058
    North America:  866-578-5801
    Access Code:    UMCCall

A live webcast and replay of the 2Q07 results announcement will be available at www.umc.com under the "Investor Relations \ Investor Events" section.

About UMC

UMC (NYSE: UMC) (TSE: 2303) is a leading global semiconductor foundry that manufactures advanced process ICs for applications spanning every major sector of the semiconductor industry. UMC delivers cutting-edge foundry technologies that enable sophisticated system-on-chip (SoC) designs, including volume production 90nm, industry-leading 65nm, and mixed signal/RFCMOS. UMC's 10 wafer manufacturing facilities include two advanced 300mm fabs; Fab 12A in Taiwan and Singapore-based Fab 12i are both in volume production for a variety of customer products. The company employs approximately 13,000 people worldwide and has offices in Taiwan, Japan, Singapore, Europe, and the United States. UMC can be found on the web a thttp://www.umc.com .

Safe Harbor Statements

Except for statements in respect of historical matters, the statements in this release contain "forward-looking statements" within the meaning of Section 27A of the U.S. Securities Act of 1933 and Section 21E of the U.S. Securities Exchange Act of 1934. These forward-looking statements involve known and unknown risks, uncertainties and other factors that may cause the actual performance, financial condition or results of operations of UMC to be materially different from what is stated or may be implied in such forward- looking statements. Investors are cautioned that actual events and results could differ materially from those statements as a result of a number of factors, including, among other things: our dependence upon the frequent introduction of new services and technologies based on the latest developments in our industry; the intensely competitive semiconductor, communications, consumer electronics and computer industries and markets; the risks associated with international global business activities; our dependence upon key personnel; general economic and political conditions, including those related to the semiconductor, communications, consumer electronics and computer industries; possible disruptions in commercial activities caused by natural and human-induced events and disasters, including terrorist activity, armed conflict and highly contagious diseases; reduced end-user purchases relative to expectations and orders; fluctuations in foreign currency exchange rates; and those risks identified in the section entitled "Risk Factors" in UMC's Annual Report on Form 20-F ("20-F") for the year ended December 31, 2006 filed with the U.S. Securities and Exchange Commission on May 9, 2007.

The financial statements included in this release are unaudited and unconsolidated, and prepared and published in accordance with ROC GAAP. Investors are cautioned that there are many differences between ROC GAAP and US GAAP, as described in note 39 to the financial statements on 20-F.

The forward-looking statements in this release reflect the current belief of UMC as of the date of this release and UMC undertakes no obligation to update these forward-looking statements for events or circumstances that occur after such date or to reflect the occurrence of unanticipated events.

                        - FINANCIAL TABLES TO FOLLOW -



                     UNITED MICROELECTRONICS CORPORATION
               Unaudited Condensed Unconsolidated Balance Sheet
                             As of June 30, 2007
    Figures in Million of New Taiwan Dollars (NT$) and U.S. Dollars (US$)


                                                      June 30, 2007
                                               US$          NT$          %
       ASSETS
       Current Assets
        Cash and Cash Equivalents              2,345       77,058       21.7%
        Financial assets at fair value
         through profit or loss, current         237        7,797        2.2%
        Notes & Accounts Receivable              431       14,154        4.0%
        Inventories                              332       10,911        3.0%
        Other Current Assets                     116        3,810        1.1%
           Total Current Assets                3,461      113,730       32.0%

       Non-Current Assets
        Funds and Long-term Investments        2,758       90,626       25.5%
        Property, Plant and Equipment          4,282      140,715       39.6%
        Intangible Assets                        114        3,745        1.0%
        Other Assets                             205        6,738        1.9%
           Total Non-Current Assets            7,359      241,824       68.0%
       TOTAL ASSETS                           10,820      355,554      100.0%

       LIABILITIES
       Current Liabilities
        Financial liabilities at fair
         value through profit or loss,
         current                                  13          423        0.1%
        Payables                                 562       18,468        5.2%
        Dividends payable                        379       12,462        3.5%
        Current Portion of Long-term
         Liabilities                             701       23,023        6.5%
        Other Current Liabilities                 16          544        0.2%
           Total Current Liabilities           1,671       54,920       15.5%

       Non-Current Liabilities
        Bonds Payable                            228        7,495        2.1%
        Other Liabilities                        110        3,594        1.0%
           Total Non-Current Liabilities         338       11,089        3.1%
       TOTAL LIABILITIES                       2,009       66,009       18.6%

       STOCKHOLDERS' EQUITY
       Capital Stock                           5,826      191,443       53.8%
       Additional Paid-in Capital              2,062       67,772       19.1%
       Retained Earnings, Unrealized Gain
        on Financial Assets and
        Translation Adjustment                 1,818       59,725       16.8%
       Treasury Stock                           (895)     (29,395)      -8.3%
       TOTAL STOCKHOLDERS' EQUITY              8,811      289,545       81.4%
       TOTAL LIABILITIES AND
        STOCKHOLDERS' EQUITY                  10,820      355,554      100.0%



    Note: New Taiwan Dollars have been translated into U.S. Dollars at the
          June 30, 2007 exchange rate of NT$32.86 per U.S. Dollar.
          All figures are in ROC GAAP.



                     UNITED MICROELECTRONICS CORPORATION
             Unaudited Condensed Unconsolidated Income Statement
    Figures in Million of New Taiwan Dollars (NT$) and U.S. Dollars (US$)
                      Except Per Share and Per ADS Data

                                             Year over Year Comparison
                                          Three-Month Period Ended
                                       June 30, 2007   June 30, 2006     %
                                         US$     NT$     US$     NT$     Chg.
    Net Sales                            764   25,097    783   25,751   -2.5%
    Cost of Goods Sold                  (613) (20,139)  (626) (20,580)  -2.1%
    Net Gross Profit                     151    4,958    157    5,171   -4.1%
                                       19.8%    19.8%  20.1%    20.1%     --
    Operating Expenses
      - Sales & Marketing                 23      732     23      761   -3.8%
      - General & Administrative          21      691     20      676    2.2%
      - Research & Development            70    2,309     64    2,104    9.7%
                                         114    3,732    107    3,541    5.4%
    Operating Income (Loss)               37    1,226     50    1,630  -24.8%
                                        4.9%     4.9%   6.3%     6.3%     --

    Net Non-Operating Income
     (Expenses)                          127    4,182    154    5,076  -17.6%
    Income (Loss) from continuing
     operations before income tax        164    5,408    204    6,706  -19.3%
                                       21.6%    21.6%  26.0%    26.0%     --

    Income Tax (Expense) Benefit         (15)    (497)   (20)    (654) -24.0%
    Net Income (Loss)                    149    4,911    184    6,052  -18.9%
                                       19.6%    19.6%  23.5%    23.5%     --

    Earnings per Share                 0.009     0.28  0.010     0.34     --
    Earnings per ADS (2)               0.043     1.40  0.052     1.70     --
    Weighted Average Number of Shares
    Outstanding (in millions)             --   17,780     --   17,469     --



                     UNITED MICROELECTRONICS CORPORATION
             Unaudited Condensed Unconsolidated Income Statement
    Figures in Million of New Taiwan Dollars (NT$) and U.S. Dollars (US$)
                      Except Per Share and Per ADS Data

                                          Quarter over Quarter Comparison
                                         Three-Month Period Ended
                                       June 30, 2007   March 31, 2007     %
                                        US$     NT$     US$     NT$      Chg.
    Net Sales                           764   25,097    701   23,025     9.0%
    Cost of Goods Sold                 (613) (20,139)  (589) (19,349)    4.1%
    Net Gross Profit                    151    4,958    112    3,676    34.9%
                                      19.8%    19.8%  16.0%    16.0%      --
    Operating Expenses
      - Sales & Marketing                23      732     20      650    12.6%
      - General & Administrative         21      691     20      678     1.9%
      - Research & Development           70    2,309     71    2,330    -0.9%
                                        114    3,732    111    3,658     2.0%
    Operating Income (Loss)              37    1,226      1       18  6711.1%
                                       4.9%     4.9%   0.1%     0.1%      --

    Net Non-Operating Income
     (Expenses)                         127    4,182     52    1,719   143.3%
    Income (Loss) from continuing
     operations before income tax       164    5,408     53    1,737   211.3%
                                      21.6%    21.6%   7.5%     7.5%      --

    Income Tax (Expense) Benefit        (15)    (497)    (9)    (278)   78.8%
    Net Income (Loss)                   149    4,911     44    1,459   236.6%
                                      19.6%    19.6%   6.3%     6.3%      --

    Earnings per Share                0.009     0.28  0.002     0.08      --
    Earnings per ADS (2)              0.043     1.40  0.012     0.40      --
    Weighted Average Number of Shares
    Outstanding (in millions)            --   17,780     --   17,776      --

    Note:
    (1) New Taiwan Dollars have been translated into U.S. Dollars at the
         June 30, 2007 exchange rate of NT$32.86 per U.S. Dollar.
         All figures are in ROC GAAP.
    (2) 1 ADS equals 5 common shares.



                     UNITED MICROELECTRONICS CORPORATION
             Unaudited Condensed Unconsolidated Income Statement
    Figures in Million of New Taiwan Dollars (NT$) and U.S. Dollars (US$)
                      Except Per Share and Per ADS Data

                                For the Three-Month
                                   Period Ended         For the year Ended
                                  June 30, 2007            June 30, 2007
                                US$     NT$      %      US$      NT$      %
    Net Sales                   764   25,097  100.0%   1,465   48,122  100.0%
    Cost of Goods Sold         (613) (20,139) -80.2%  (1,202) (39,488) -82.1%
    Net Gross Profit            151    4,958   19.8%     263    8,634   17.9%

    Operating Expenses
      - Sales & Marketing        23      732    2.9%     (42)  (1,382)  -2.9%
      - General &
        Administrative           21      691    2.8%     (42)  (1,369)  -2.8%
      - Research &
        Development              70    2,309    9.2%    (141)  (4,639)  -9.6%
                                114    3,732   14.9%    (225)  (7,390) -15.3%
    Operating Income (Loss)      37    1,226    4.9%      38    1,244    2.6%

    Net Non-Operating Income
     (Expenses)                 127    4,182   16.7%     179    5,901   12.2%
    Income (Loss) from
     continuing operations
     before income tax          164    5,408   21.6%     217    7,145   14.8%

    Income Tax (Expense)
     Benefit                    (15)    (497)  -2.0%     (23)    (775)  -1.6%
    Net Income (Loss)           149    4,911   19.6%     194    6,370   13.2%

    Earnings per Share        0.009     0.28     --    0.011     0.36     --
    Earnings per ADS (2)      0.043     1.40     --    0.055     1.80     --
    Weighted Average Number
     of Shares
    Outstanding (in millions)    --   17,780     --       --   17,778     --


    Note:
    (1) New Taiwan Dollars have been translated into U.S. Dollars at the June
        30, 2007 exchange rate of NT$32.86 per U.S. Dollar.
        All figures are in ROC GAAP.
    (2) 1 ADS equals 5 common shares.



                     UNITED MICROELECTRONICS CORPORATION
          Unaudited Condensed Unconsolidated Statement of Cash Flows
                    For The Six Months Ended June 30, 2007
    Figures in Million of New Taiwan Dollars (NT$) and U.S. Dollars (US$)

                                                    USD          NTD
    Cash flows from operating activities:
        Net Income                                  194         6,370
        Depreciation & Amortization                 560        18,404
        Bed debts reversal                           (0)           (1)
        Gain on recovery in market value
         and obsolesence of inventories              (2)          (58)
        Cash dividends received under the
         equity method                               11           354
        Investment gain accounted for
         under the equity method                    (34)       (1,131)
        Loss on valuation of financial
         assets and liabilities                       4           115
        Impairment loss                               7           246
        Gain on disposal of investments            (130)       (4,258)
        Gain on disposal of property,
         plant and equipment                         (1)          (17)
        Exchange loss on financial assets
         and liabilities                              0             2
        Exchange loss on long-term
         liabilities                                  9           284
        Amortization of bond discounts                1            35
        Amortization of deferred income              (2)          (72)
        Change in assets and liabilities            (90)       (2,958)
    Net cash provided from operating
     activities                                     527        17,315

    Cash flows from investing activities:
        Acquisition of available-for-
         sales financial assets                      (6)         (199)
        Proceeds from disposal of
         available-for-sales financial
         assets                                      15           498
        Proceeds from disposal of held-
         to-maturity financial assets                24           776
        Acquisition of financial assets
         measured at cost                            (4)         (120)
        Acquisition of long-term
         investments accounted for the
         equity method                              (15)         (494)
        Proceeds from disposal of long-
         term investments accounted for
         the equity method                            5           170
        Prepaid investment                           (7)         (248)
        Proceeds from liquid of long-term
         investment                                   0            11
        Acquisition of property, plant
         and equipment                             (654)      (21,495)
        Proceeds from disposal of
         property, plant and equipment                7           236
        Increase in deferred charges                (19)         (617)
        Decrease in other assets - others             1            23
    Net cash used in investing activities          (653)      (21,459)

    Cash flows from financing activities:
        Redemption of bonds                         (69)       (2,260)
        Exercise of employee stock options            6           187
        Decrease in deposits-in                      (0)           (1)
    Net cash used in financing activities           (63)       (2,074)

    Effect of exchange rate changes on
     cash and cash equivalents                       (4)         (119)
    Decrease in cash and cash equivalents          (193)       (6,337)

    Cash and cash equivalents at
     beginning of period                          2,538        83,395

    Cash and cash equivalents at end of
     period                                       2,345        77,058


    Note: New Taiwan Dollars have been translated into U.S. Dollars at the
          June 30, 2007 exchange rate of NT$ 32.86 per U.S. Dollar.
          All figures are in ROC GAAP.



    Contacts:

    Bowen Huang / Dylan Lee
    UMC, Investor Relations
    Tel:   +886-2-2700-6999 ext. 6957
    Email: 
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