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UMC Reports 2003 First Quarter Results

    TAIPEI, Taiwan--April 30, 2003--United Microelectronics Corporation :

    Results Beat Guidance; Anticipating Greater than 20% QoQ Shipment
    Growth in 2Q03

    First Quarter 2003 Highlights(1):

-- Quarter-over-quarter revenue increased by 2.1 % to NT$17.90 billion (US$515 million)
-- Operating income of NT$699 million (US$20 million)
-- Net income of NT$403 million (US$12 million)
-- Wafer shipments of 446 thousand 8-inch equivalent wafers; blended average selling price is flat compared with last quarter
-- EPS of NT$0.03, or EPADS of US$0.004

    United Microelectronics Corporation ("UMC" or "the Company"), a leading global semiconductor foundry, today announced its unconsolidated operating results for the first quarter of 2003.
    All financial figures were prepared in accordance with ROC GAAP, which differ in some material respects from generally accepted accounting principles in the United States.
    "We are pleased to report that results for the first quarter of 2003 are better than our previously announced guidance, and we are expecting second quarter wafer shipments to increase by more than 20% compared to the first quarter." UMC Vice Chairman & CEO John Hsuan said.
    "We believe that the competitive landscape for the foundry business has changed dramatically and, since last quarter, have initiated a partnership foundry business model in which we and our partners form close relationships. In the short term, this allows the best utilization of our resources, and in the long term, we believe our profitability and growth rate will outperform other foundries," John Hsuan continued.
    "The goal of our partnership foundry business model is to create a network of partnerships and alliances among system and integrated device manufacturers, foundry companies, and intellectual property and design houses. Our partnerships take a variety of forms and structures, depending upon the needs of the customer and the market environment in which they compete. Our focus is to make each customer engagement a successful partnership. Together, UMC and our customers are stronger than we are separately."

(1) Unless otherwise stated, all financial figures discussed in this
    announcement are prepared in accordance with ROC GAAP. They are
    unaudited, unconsolidated, and represent comparisons among the
    three-month period ending March 31, 2003, the three-month period
    ending December 31, 2002, and the equivalent three-month period
    that ended March 31, 2002. For all 1Q03 results, New Taiwan Dollar
    (NT$) amounts have been converted into U.S. dollars at the
    exchange rate of NT$34.76 to one U.S. dollar.

    Summary of Operating Results

    Revenue for 1Q03 was NT$17.90 billion, representing a 47.2% YoY increase from NT$12.16 billion in 1Q02, and a 2.1% QoQ increase from NT$17.54 billion in 4Q02. Gross profit for the quarter was NT$2.74 billion, a 6.2% increase from NT$2.58 billion in 4Q02. The increase in gross profit is primarily attributable to higher revenue. Net income for 1Q03 was NT$403 million, compared to NT$986 million in 4Q02. The decline in net income was due to non-operating losses.


 ---------------------------------------------------------------------
 (Figures in million NT$)        1Q03   4Q02    QoQ    1Q02     YoY
                                              %change        % change
 =====================================================================
 Revenue                        17,898 17,535     2.1 12,159     47.2
 Gross Profit                    2,740  2,581     6.2    674    306.5
 Operating Expenses             (2,041)(2,250)   (9.3)(3,126)   (34.7)
 Operating Profit                  699    331   111.2 (2,452)      --
 Non-op Income and Exp.           (295)   657      --  2,670       --
 Net Income                        403    986   (59.1)   216     86.6
 EPS       (NT$ per share)        0.03   0.07           0.01
           (US$ per ADR)         0.004  0.010          0.001
 ---------------------------------------------------------------------


    Earnings per ordinary share (EPS) for the quarter were NT$0.03. Earnings per ADS (EPADS) were US$0.004. This compares with earnings per ordinary share and ADS in 1Q02 of NT$0.01 and US$0.001 respectively. One ADS represents five Taiwan listed ordinary shares. Total weighted average outstanding shares in 1Q03 were 14,726,502,640 shares, compared with 14,730,658,270 shares in 4Q02 and 14,786,323,844 shares in 1Q02. Diluted total weighted average outstanding shares, which include the dilution effects of future ECB conversion and stock option exercises, were 14,763,951,887 shares in 1Q03, compared with 15,045,394,253 shares in 4Q02 and 14,786,323,844 shares in 1Q02.

    Detailed Financials Section


COGS & Expenses
======================================================================
(Amount: NT$ million)           1Q03    4Q02    QoQ     1Q02    YoY
                                               %change         %change
----------------------------------------------------------------------
Revenue                        17,898  17,535     2.1  12,159    47.2
COGS                          (15,158)(14,954)    1.4 (11,485)   32.0
  Depreciation                 (7,501) (6,997)    7.2  (6,549)   14.5
  Other Mfg. Costs             (7,657) (7,957)   (3.8) (4,936)   55.1
Gross Profit                    2,740   2,581     6.2     674   306.5
Gross Margin (%)                 15.3%   14.7%            5.5%
Total Op. Exp.                 (2,041) (2,250)   (9.3) (3,126)  (34.7)
  G&A                            (510)   (547)   (6.8)   (933)  (45.3)
  Selling and Mkting             (266)   (278)   (4.3)   (201)   32.3
  R&D                          (1,265) (1,425)  (11.2) (1,992)  (36.5)
Operating Profit                  699     331   111.2  (2,452)      -
Operating Margin (%)              3.9%    1.9%          -20.2%
----------------------------------------------------------------------


    Depreciation and amortization expenses were NT$9.16 billion in 1Q03, compared to NT$9.12 billion in 4Q02. Depreciation within COGS increased by 7.2% to NT$7.50 billion. Total operating expenses have declined for four consecutive quarters, and declined 9.3% QoQ to NT$2.04 billion in 1Q03, mainly due to continuously effective cost saving efforts. General and administrative expenses declined 6.8% QoQ, due to less travel. Sales and marketing expenses decreased 4.3% QoQ to NT$266 million, mainly due to savings associated with a more reasonable partner resource allocation. R&D spending declined 11.2% QoQ to NT$1.27 billion mainly due to the completion of our 0.13-micron generation manufacturing technology.


Non-operating Income (Expenses)
======================================================================
(Amount: NT$ million)                                 1Q03 4Q02  1Q02
----------------------------------------------------------------------
Net Non-Operating Income (Loss)                       (295) 657 2,670
  Net Interest Income (Expense)                        (20)  (5)  (60)
  Net Investment Income (Loss)                        (124) 461   405
  Gain on Disposal of Investment                       113  299 2,125
  Exchange Gain (Loss)                                  69  104    70
  Others                                              (333)(202)  130
----------------------------------------------------------------------


    Net non-operating loss for 1Q03 was NT$295 million, of which NT$124 million was attributable to investment loss, including a NT$100 million amortization of the difference between the equity investment cost of SiS and its underlying equity in net assets, which we expect to amortize over 5 years. Loss from other items is mainly due to wafer scraps of NT$249 million. Exchange gains in 1Q03 were NT$69 million.


Cash Flow Summary
======================================================================
(Amount: NT$ million)              For the 3-Month    For the 3-Month
                                  Period Ended Mar.  Period Ended Dec.
                                      31, 2003            31, 2002
----------------------------------------------------------------------
Cash Flow from Operations                     7,449            10,959
  Net Income (Loss)                             403               986
  Depreciation & Amortization                 9,164             9,118
  Changes in working capital                 (2,495)            1,404
  Others                                        377              (549)
Cash Flow from Investing                     (7,622)           (6,069)
  Capital Expenditures                       (2,827)           (4,682)
  Others                                     (4,795)           (1,388)
Cash Flow from Financing                     (3,736)           (1,830)
Net Cash Flow                                (3,909)            3,060
----------------------------------------------------------------------


    Net cash outflow was NT$3.91 billion in 1Q03. Working capital decreased by NT$2.50 billion, mainly due to the near term uptrend of our revenue. Cash outflow from investing includes capital spending, primarily consisting of equipment, which totaled NT$2.83 billion, and a NT$4.39 billion investment in SiS in 1Q03. The majority of cash outflow due to financing activities consists mostly of a NT$1.86 billion payback of long-term loans and a NT$1.78 billion purchase of treasury stocks. For the next 12 months, we expect to pay back NT$4.26 billion in long-term loans and redeem NT$11.77 billion in bonds.


Current Assets
======================================================================
    (Amount: NT$ Bn)                                 1Q03  4Q02  1Q02
----------------------------------------------------------------------
Cash & Equiv.                                       58.57 62.48 60.81
Notes & Accounts Receivable                         12.38  9.37  7.10
  Days Sales Outstanding                               55    54    54
Inventories                                          8.15  7.69  6.53
  Inventory Turns                                      49    48    48
Total Current Assets                                85.79 86.66 79.18
----------------------------------------------------------------------


    Cash and equivalents decreased NT$3.91 billion to NT$58.57 billion, mainly because UMC invested NT4.39 billion in SiS in 1Q03. Notes & accounts receivable increased by NT$3.01 billion QoQ to NT$12.38 billion, mainly due to the uptrend of our business. On a sequential basis, days sales outstanding(1) increased to 55 days. Inventory turns increased slightly to 49 days.


Liabilities
======================================================================
    (Amount: NT$ Bn)                                 1Q03  4Q02  1Q02
----------------------------------------------------------------------
Total Current Liabilities                           30.07 20.95 25.69
  Accounts Payable                                   3.01  2.66  2.52
  Short Term Credit / Bonds                         16.03  5.67  6.01
  Others                                            11.03 12.62 17.16
Long Term Liabilities                               42.76 55.07 51.63
Total Debts                                         76.79 79.90 81.94
Debt to Equity                                         36%   37%   39%
----------------------------------------------------------------------


    UMC's financial position improved during the quarter. Total debt declined by 3.9% to NT$76.79 billion because UMC repaid loans worth NT$1.96 billion to reduce interest expenses. UMC's debt to equity ratio dropped to 36% by the end of 1Q03 from 37%by the end of 4Q02. Compared with 4Q02, total current liabilities increased by NT$9.12 billion, mainly due to the reclassification of our NT$106 million ECB, which was issued on December 12, 2001, and will be due on March 1, 2004. It was moved from long-term liabilities to current liabilities.

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

    Analysis of Revenue(3)

    The percentage of revenue contributed from Europe grew to 18% in 1Q03 from 15% in 4Q02 mainly due to the restocking after an inventory rationalization in 4Q02 by a handful of European customers. The percentage of revenue from other geographic areas remained similar compared with the last quarter.
    The percentage of revenue from leading-edge 0.13-micron technology sales increased to 7% in 1Q03 from 6% in 4Q02. 38% of revenue in 1Q03 was from 0.18-micron and below technologies compared with 36% of revenue in the previous quarter.
    IDM orders accounted for 29% of the total, up from 24% in 4Q02 due to a few European IDM customers replenishing their inventories to normal levels.
    Revenue from the computer market segment in 1Q03 was 27% of total revenue, and was higher than we earlier anticipated due to new customer wins and strong demand from LCD panel drivers.

    REVENUE BREAKDOWN BY REGION



Region                                            1Q022Q023Q024Q021Q03
======================================================================
North America                                      29% 35% 43% 41% 39%
----------------------------------------------------------------------
Asia Pacific                                       54% 50% 34% 41% 40%
----------------------------------------------------------------------
Europe                                             14% 11% 20% 15% 18%
----------------------------------------------------------------------
Japan                                               3%  4%  3%  3%  3%
----------------------------------------------------------------------


    REVENUE BREAKDOWN BY TECHNOLOGY



Technology                                        1Q022Q023Q024Q021Q03
======================================================================
0.13um                                              0%  1%  2%  6%  7%
----------------------------------------------------------------------
0.15um                                              5%  5%  9%  8%  3%
----------------------------------------------------------------------
0.15um less than x less than = 0.18um              10% 17% 26% 22% 28%
----------------------------------------------------------------------
0.18um less than x less than = 0.25um              27% 28% 25% 23% 25%
----------------------------------------------------------------------
0.25um less than x less than = 0.35um              40% 33% 22% 27% 25%
----------------------------------------------------------------------
0.5um and above                                    18% 16% 16% 14% 12%
----------------------------------------------------------------------


    REVENUE BREAKDOWN BY CUSTOMER TYPE



Customer Type                                     1Q022Q023Q024Q021Q03
======================================================================
Fabless                                            82% 82% 71% 75% 71%
----------------------------------------------------------------------
IDM                                                17% 17% 28% 24% 29%
----------------------------------------------------------------------
System                                              1%  1%  1%  1%  0%
----------------------------------------------------------------------


    REVENUE BREAKDOWN BY APPLICATION(1)



Application                                       1Q022Q023Q024Q021Q03
======================================================================
Computer                                           38% 29% 24% 25% 27%
----------------------------------------------------------------------
Communication                                      20% 25% 37% 40% 40%
----------------------------------------------------------------------
Consumer                                           33% 37% 31% 28% 28%
----------------------------------------------------------------------
Memory                                              7%  7%  6%  5%  4%
----------------------------------------------------------------------
Others                                              2%  2%  2%  2%  1%
----------------------------------------------------------------------


(1) Computer consists of ICs such as HD controllers, DVD-ROM/CD-ROM
    drivers, 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.

(3) Revenue in this section represents net wafer sales. All revenue
    breakdown tables exclude JV's and subsidiaries.

    Blended Average Selling Price Trend

    For the quarter, wafer price per technology node was stable. The blended average selling price (ASP) for the first quarter was unchanged from 4Q02, and was in line with the QoQ flat ASP guidance we previously provided.

    CAPEX

    For fiscal year 2003, planned capital expenditure (UMC only) is US$500 million. CAPEX in 1Q03 was US$81 million. Planned CAPEX in 2Q03 is expected to be US$145 million. We expect to spend 40% of this on Fab12A capacity expansion, 20% on R&D and the remaining 40% on other 8-inch wafer fabs.

    CAPITAL EXPENDITURE BY YEAR



CAPEX PLAN - IN BILLIONS OF US$
======================================================================
Year                                 1998  1999  2000  2001 2002 2003E
----------------------------------------------------------------------
                                   $1.70 $1.90 $2.80 $1.10 $0.8 $0.5
----------------------------------------------------------------------


    Capacity(4)

    Capacity for 1Q03 was 668 thousand eight-inch equivalent wafers. Current estimated 2Q03 capacity is 668 thousand eight-inch equivalent wafers.
    Annual Capacity in thousands of 8-inch wafer equivalents, excluding JV's & subsidiaries


                                   Geometry
               FAB                    (um)     2000  2001  2002 2003E
======================================================================
                                    
Fab 5A(1)       5"         (greater than)0.8     33    --    --    --
----------------------------------------------------------------------
Fab 6A          6"                 3.5 - 0.45   348   345   349   352
----------------------------------------------------------------------
Fab 8AB         8"                 0.5 - 0.25   926   943   853   864
----------------------------------------------------------------------
Fab 8C          8"                0.35 - 0.15   416   460   355   300
----------------------------------------------------------------------
Fab 8D          8"                0.18 - 0.09    94   290   214   244
----------------------------------------------------------------------
Fab 8E          8"                 0.5 - 0.18   373   474   376   332
----------------------------------------------------------------------
Fab 8F          8"                0.25 - 0.15   139   351   312   358
----------------------------------------------------------------------
Fab 12A        12"                0.18 - 0.13    --    22   119   216
======================================================================
                  Total  (2)                  2,329 2,885 2,578 2,666
----------------------------------------------------------------------
               YoY Growth Rate                   41%   24%  -11%    3%
----------------------------------------------------------------------


    (1) Fab 5A was sold in 2Q00

    (2) One 6-inch wafer is converted into 0.5625 8-inch equivalent
    wafer; one 12-inch wafer is converted into 2.25 8-inch
    equivalent wafers.

    Quarterly Capacity Plan by fab in thousands of 8-inch wafer equivalents excluding JV's & subsidiaries


                      FAB                       3Q024Q021Q032Q03E3Q03E
----------------------------------------------------------------------
Fab 6A                                           89  89  88   88   88
----------------------------------------------------------------------
Fab 8AB                                         227 216 216  216  216
----------------------------------------------------------------------
Fab 8C                                           79  83  75   75   75
----------------------------------------------------------------------
Fab 8D                                           43  53  63   63   60
----------------------------------------------------------------------
Fab 8E                                          100  92  83   83   83
----------------------------------------------------------------------
Fab 8F                                           72  86  89   89   90
----------------------------------------------------------------------
Fab 12A                                          30  54  54   54   54
======================================================================
                     Total                      640 673 668  668  666
----------------------------------------------------------------------


    Shipment and Utilization Rate

    Wafer shipments increased by 12 thousand 8-inch equivalent wafers QoQ, representing a roughly 3% increase. The shipment quantity is better than our earlier guidance, when we expected a flat trend, due to better than expected orders in March.
    Utilization for the quarter was 67%, better than the approximately 60% we expected in our previously provided guidance.

    Wafer Shipments



                                                 1Q022Q023Q024Q021Q03
======================================================================
 Wafer Shipments                   (K 8-inch eq.) 308 467 435 434 446
----------------------------------------------------------------------


    Quarterly Capacity Utilization Rate



                                                 1Q022Q023Q024Q021Q03
======================================================================
Utilization rate (%)                               50% 72% 68% 64% 67%
----------------------------------------------------------------------
 Total Capacity                        
 (K 8-inch eq.)                                   616 649 640 673 668
----------------------------------------------------------------------


(4) 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 ups. Quarterly utilization rate =
    Quarterly wafer out / Estimated quarterly capacity.

    1Q 2003 Principle Investments(5)

    UMC has formed several strategic partnerships, including those with SiS, a Taiwan listed chipset and graphic card IDM, and Silicon7, a Korean fabless design house. SiS has announced that it will not expand its own chip making capacity and will mainly rely on UMC for its outsourcing needs. UMC invested NT$300 million in THSRC's preferred shares for the yield they provide.


                                                             Unit: NT
               1Q 2003 Principle Investments                   Million
----------------------------------------------------------------------
                             Acquisition Incremental Accumulated
                                 Cost     Ownership%  Ownership%
                                                                
----------------------------------------------------------------------
SiS                             4,393      12.55%      16.18%
----------------------------------------------------------------------
THSRC(1)                          300          -           -
----------------------------------------------------------------------
SILICON 7                         139          -           -
----------------------------------------------------------------------
UMCJ                              121       0.52%      52.00%
----------------------------------------------------------------------
NOVATEK                           118       0.62%      26.45%
----------------------------------------------------------------------
PTP(2) Fund                        30          -           -
----------------------------------------------------------------------
TOTAL                           5,101
----------------------------------------------------------------------


    (1) The full name of THSRC is Taiwan High Speed Rail Corp.
    (2) The full name of PTP is Pacific Technology Partners, L.P.

    (5) The principle investment information disclosed is UMC
    aggregated data, including UMC, Hsun Chieh Investment Corp.,
    Fortune Venture Capital Corp. and UMC Capital Corp.

    Recent Developments / Announcements

    Apr. 08 Giga Solution, Mentor Graphics and UMC Release Foundry
    Design Kits for 0.18um RF Mixed-Mode Process

    Apr. 02 Oki and UMC / UMCJ Achieve New Production Milestones

    Mar. 31 UMC Delivering Customer IC's Built on 90nm Technology

    Mar. 28 XILINX First 130nm 300mm Production Qualification at UMC
    with Virtex-II Pro

    Mar. 27 UMC Honors Xilinx for Milestone Achievement: 300mm Volume
    Manufacturing Using Advanced Technologies

    Mar. 26 UMC Forms Strategic Partnership with Silicon7

    Mar. 25 UMC Names Dr. Jackson Hu Head of Design Support

    Mar. 25 UMC Declares the Board of Directors' Proposals to the AGM

    Mar. 11 UMC News: UMC Vice Chairman Peter Chang Delivers Keynote
    Address at 2003 Semico Summit

    Mar. 10 Oki Electric Enhances its ASIC Product Offerings Through
    Collaboration with UMC

    Jan. 30 Faraday Validates Multiple Silicon Intellectual Properties
    For UMC's 90-nm Process Using Magma Design Flow

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

    Second Quarter of 2003 Outlook & Guidance

    Quarter-over-quarter comparison:

-- l Wafer ASP: flat from 1Q03
-- l Wafer shipments: (greater than) 20% increase compared with 1Q03
-- l Capacity utilization rate: over 80%
-- l Operating profit margins to challenge double-digit
-- l Percentage of revenue from 0.18 - micron & below technology: approximately 40%
-- l The PC segment should post the strongest growth due to customer wins, followed by communication and consumer segments.

    Conference Call / Webcast Announcement

    Wednesday, April 30, 2003
    Local Teleconference (Mandarin)
    Time: 2:00 PM (Taipei) / 2:00 AM (New York) / 7:00 AM (London)
    Dial-in number:
    Taiwan: (02) 2192-2758

    Overseas Teleconference
    Time: 8:00 PM (Taipei) / 8:00 AM (New York) / 1:00 PM (London)
    Dial-in numbers and Access Codes:
    Asia/Europe: +1 (719) 457-2617
    North America: +1 (800) 231-9012
    Access Code: UMC

    Live webcasts and replays of local and overseas teleconferences will be available at www.umc.com under the "Investor Relations / Investor Events" section.

    About UMC

    UMC 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 0.13um copper, embedded DRAM, and mixed signal/RFCMOS. UMC is also a leader in 300mm manufacturing; Fab 12A in Taiwan is currently in volume production for a variety of customer products, while the Singapore-based UMCi joint venture with Infineon Technologies will begin pilot production later this year. UMC employs over 8,500 people worldwide and has offices in Taiwan, Japan, Singapore, Europe, and the United States. UMC can be found on the web at http://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. Such 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 may be implied by 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 frequent introduction of new services and technologies based on the latest developments; the intensely competitive semiconductor, personal computer and communications 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, personal computer and communications industries; possible disruptions in commercial activities caused by natural and human induced events and disasters, including terrorist activity, armed conflict and highly contagious diseases, such as 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 for year 2001 filed with the U.S. Securities and Exchange Commission on June 13, 2002.
    The financial statements included in this release were unaudited, and prepared and published in accordance with ROC GAAP. Investors are cautioned that there are many differences between ROC GAAP and U.S. GAAP, as described in the note 28 to the financial statements on Form 6-K filed by UMC with the U.S. Securities and Exchange Commission on March 25, 2003.
    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 subsequent to such date.


                  UNITED MICROELECTRONICS CORPORATION
           Unaudited Condensed Unconsolidated Balance Sheet
                         As of March 31, 2003
    Figures in Million of New Taiwan Dollars (NT$) and U.S. Dollars
                                  (US$)


                                                    March 31, 2003
                                                ----------------------
                                                 US$     NT$         %
                                                ------ -------- ------
 ASSETS
 Current Assets
  Cash and Cash Equivalents                     1,685   58,570   20.0%
  Short-term Investments                           82    2,841    1.0%
  Notes & Accounts Receivables                    356   12,379    4.2%
  Inventories                                     234    8,148    2.8%
  Other Current Assets                            111    3,850    1.3%
                                                ------ -------- ------
     Total Current Assets                       2,468   85,788   29.3%
                                                ------ -------- ------

 Non-Current Assets
  Funds and Long-term Investments               1,747   60,712   20.7%
  Property, Plant and Equipment                 3,954  137,458   47.0%
  Intangible Assets                                 0       16    0.0%
  Other Assets                                    252    8,751    3.0%
                                                ------ -------- ------
     Total Non-Current Assets                   5,953  206,937   70.7%
                                                ------ -------- ------
 TOTAL ASSETS                                   8,421  292,725  100.0%
                                                ====== ======== ======

 LIABILITIES
 Current Liabilities
  Payables                                        347   12,063    4.1%
  Current Portion of Long-term Liabilities        461   16,032    5.5%
  Other Current Liabilities                        57    1,973    0.7%
                                                ------ -------- ------
     Total Current Liabilities                    865   30,068   10.3%
                                                ------ -------- ------

 Non-Current Liabilities
  Bonds Payable                                 1,004   34,890   11.9%
  Long-term Loans                                 226    7,869    2.7%
  Other Liabilities                               114    3,956    1.3%
                                                ------ -------- ------
     Total Non-Current Liabilities              1,344   46,715   15.9%
                                                ------ -------- ------
 TOTAL LIABILITIES                              2,209   76,783   26.2%
                                                ------ -------- ------

 STOCKHOLDERS' EQUITY
 Capital Stock                                  4,452  154,748   52.9%
 Capital Reserve                                2,357   81,942   28.0%
 Retained Earnings, Unrealized Long-term
  Investment Loss and Translation Adjustment      292   10,157    3.5%
 Treasury Stock                                  (889) (30,905) -10.6%
                                                ------ -------- ------
 TOTAL STOCKHOLDERS' EQUITY                     6,212  215,942   73.8%
                                                ------ -------- ------
 TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY     8,421  292,725  100.0%
                                                ====== ======== ======

 ---------------------------------------------------------------------

Note : New Taiwan Dollars have been translated into U.S. Dollars at
       the March 31, 2003 exchange rate of NT$ 34.76 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

                                 March 31, 2003  March 31, 2002   %
                                --------------- --------------- ------
                                 US$     NT$     US$     NT$     Chg.
                                ------ -------- ------ -------- ------
Net Sales                         515   17,898    350   12,159   47.2%
Cost of Goods Sold               (436) (15,158)  (331) (11,485)  32.0%
                                ------ -------- ------ -------- ------
Net Gross Profit                   79    2,740     19      674  306.5%
                                ------ -------- ------ -------- ------
                                 15.3%    15.3%   5.5%     5.5%
Operating Expenses
  - Sales & Marketing               8      266      6      201   32.3%
  - General & Administrative       15      510     27      933  -45.3%
  - Research & Development         36    1,265     57    1,992  -36.5%
                                ------ -------- ------ -------- ------
                                   59    2,041     90    3,126  -34.7%
                                ------ -------- ------ -------- ------
Operating Income (Loss)            20      699    (71)  (2,452)     -
                                  3.9%     3.9% -20.2%   -20.2%

Net Non-Operating Income
 (Expenses)                        (8)    (295)    77    2,670      -
                                ------ -------- ------ -------- ------
Income (loss) before Income Tax    12      404      6      218   85.3%
                                  2.3%     2.3%   1.8%     1.8%

Income Tax (Expense) Benefit        -       (1)     -       (2) -50.0%
                                ------ -------- ------ -------- ------
Net Income (Loss)                  12      403      6      216   86.6%
                                ====== ======== ====== ======== ------
                                  2.3%     2.3%   1.8%     1.8%

Earnings (loss) per share       0.001     0.03  0.000     0.01
                                ------ -------- ------ --------
Earnings (loss) per ADS (2)     0.004     0.15  0.001     0.05
                                ------ -------- ------ --------
Weighted Average Number of
 Shares
Outstanding (in millions)               14,727          14,786
                                       --------        --------


----------------------------------------------------------------------

                  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

                                 March 31, 2003 December 31, 2002 %
                                --------------- --------------- ------
                                 US$     NT$     US$     NT$     Chg.
                                ------ -------- ------ -------- ------
Net Sales                         515   17,898    504   17,535    2.1%
Cost of Goods Sold               (436) (15,158)  (430) (14,954)   1.4%
                                ------ -------- ------ -------- ------
Net Gross Profit                   79    2,740     74    2,581    6.2%
                                ------ -------- ------ -------- ------
                                 15.3%    15.3%  14.7%    14.7%
Operating Expenses
  - Sales & Marketing               8      266      8      278   -4.3%
  - General & Administrative       15      510     16      547   -6.8%
  - Research & Development         36    1,265     41    1,425  -11.2%
                                ------ -------- ------ -------- ------
                                   59    2,041     65    2,250   -9.3%
                                ------ -------- ------ -------- ------
Operating Income (Loss)            20      699      9      331  111.2%
                                  3.9%     3.9%   1.9%     1.9%

Net Non-Operating Income
 (Expenses)                        (8)    (295)    19      657      -
                                ------ -------- ------ -------- ------
Income (loss) before Income Tax    12      404     28      988  -59.1%
                                  2.3%     2.3%   5.6%     5.6%

Income Tax (Expense) Benefit        -       (1)     -       (2) -50.0%
                                ------ -------- ------ -------- ------
Net Income (Loss)                  12      403     28      986  -59.1%
                                ====== ======== ====== ======== ------
                                  2.3%     2.3%   5.6%     5.6%

Earnings (loss) per share       0.001     0.03  0.002     0.07
                                ------ -------- ------ --------
Earnings (loss) per ADS (2)     0.004     0.15  0.010     0.35
                                ------ -------- ------ --------
Weighted Average Number of
 Shares
Outstanding (in millions)               14,727          14,731
                                       --------        --------


----------------------------------------------------------------------
Note:

(1) New Taiwan Dollars have been translated into U.S. Dollars at the
    March 31, 2003 exchange rate of NT$ 34.76 per U.S. Dollar. All
    figures are in ROC GAAP.

(2) 1 ADS equals 5 ordinary 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    For the Three-Month
                             Period Ended           Period Ended
                            March 31, 2003         March 31, 2003
                        ---------------------- ----------------------
                         US$     NT$         %  US$     NT$         %
                        ------ -------- ------ ------ -------- ------
Net Sales                 515   17,898    100%   515   17,898    100%
Cost of Goods Sold       (436) (15,158) -84.7%  (436) (15,158) -84.7%
                        ------ -------- ------ ------ -------- ------
Net Gross Profit           79    2,740   15.3%    79    2,740   15.3%
                        ------ -------- ------ ------ -------- ------

Operating Expenses
  - Sales & Marketing       8      266    1.5%     8      266    1.5%
  - General &
   Administrative          15      510    2.8%    15      510    2.9%
  - Research &
   Development             36    1,265    7.1%    36    1,265    7.1%
                        ------ -------- ------ ------ -------- ------
                           59    2,041   11.4%    59    2,041   11.4%
                        ------ -------- ------ ------ -------- ------
Operating Income (Loss)    20      699    3.9%    20      699    3.9%

Net Non-Operating Income
 (Expenses)                (8)    (295)  -1.6%    (8)    (295)  -1.6%
                        ------ -------- ------ ------ -------- ------
Income (loss) before
 Income Tax                12      404    2.3%    12      404    2.3%

Income Tax (Expense)
 Benefit                    -       (1)   0.0%    (0)      (1)   0.0%
                        ------ -------- ------ ------ -------- ------
Net Income (Loss)          12      403    2.3%    12      403    2.3%
                        ====== ======== ====== ====== ======== ======

Earnings (loss) per
 share                  0.001     0.03         0.001     0.03
                        ------ --------        ------ --------
Earnings (loss) per ADS
 (2)                    0.004     0.15         0.004     0.15
                        ------ --------        ------ --------
Weighted Average Number
 of Shares
Outstanding (in
 millions)                      14,727                 14,727
                               --------               --------


---------------------------------------------------------------------
Note:

(1) New Taiwan Dollars have been translated into U.S. Dollars at the
    March 31, 2003 exchange rate of NT$ 34.76 per U.S. Dollar. All
    figures are in ROC GAAP.

(2) 1 ADS equals 5 ordinary shares.




                 UNITED MICROELECTRONICS CORPORATION
         Unaudited Condensed Unconsolidated Statement of Cash
                                 Flows
               For The Three Months Ended March 31, 2003
        Figures in Million of New Taiwan Dollars (NT$) and U.S.
                             Dollars (US$)

                                                         US$     NT$
                                                        ------ -------
Cash flows from operating activities :
    Net Income                                             12     403
    Depreciation & Amortization                           264   9,164
    Bad debt expense                                        2      58
    Long-term investment loss accounted for under the
     equity method                                          3     124
    Inventory loss                                          9     305
    Gain on disposal of investments                        (3)   (113)
    Gain on disposal of property, plant and equipment      (0)     (2)
    Exchange gain on long-term liabilities                 (0)     (6)
    Change in working capital & others                    (73) (2,484)
                                                        ------ -------
    Net cash provided from operating activities           214   7,449

Cash flows from investing activities :
    Increase in short-term investments                    (10)   (370)
    Increase in long-term Investments                    (140) (4,862)
    Proceeds from disposal of long-term investments        11     386
    Acquisition of property, plant and equipment          (81) (2,827)
    Proceeds from disposal of property, plant and
     equipment                                              4     150
    Increase in Deposits-out                               (0)     (7)
    Increase in deferred expenses / other assets           (3)    (92)
                                                        ------ -------
    Net cash used in investing activities                (219) (7,622)

Cash flows from financing activities :
    Decrease in short-term loans                           (3)   (100)
    Decrease in long-term loans                           (53) (1,858)
    Treasury stock                                        (51) (1,778)
                                                        ------ -------
    Net cash used in financing activities                (107) (3,736)

                                                        ------ -------
Net decrease in cash and cash equivalents                (112) (3,909)
                                                        ------ -------

Cash and cash equivalents at beginning of period        1,797  62,479

Cash and cash equivalents at end of period              1,685  58,570
                                                        ====== =======

----------------------------------------------------------------------

Note: New Taiwan Dollars have been translated into U.S. Dollars at the
      March 31, 2003 exchange rate of NT$ 34.76 per U.S. Dollar.

      All figures are in ROC GAAP.