O2Micro Reports First Quarter Earnings and Record High Revenue


GEORGE TOWN, Grand Cayman, May 3, 2006 (PRIMEZONE) -- O2Micro(r) International Limited (Nasdaq:OIIM) (SEHK:0457), a leading supplier of innovative power management and security components and systems for the Computer, Consumer, Industrial, and Communications markets, reported its financial results today for the first quarter ended March 31, 2006.

Net sales for the first quarter were a record high of $29.1 million. First quarter revenue of $29.1 million was an increase of 1.8% from the preceding quarter, and an increase of 25% from the comparable quarter of the prior year. Earnings per American Depositary Share (ADS) for the first quarter, fully diluted, were 3 cents, compared to 1 cent per ADS in the preceding quarter and 5 cents per ADS in the comparable quarter of the prior year.

Net income for the first quarter of $1.0 million was an increase of 356% from the preceding quarter, and a decrease of 51% from the comparable quarter of the prior year. First quarter R&D expenditures were $6.8 million, a decrease of 6% from the preceding quarter, and an increase of 27% from the comparable quarter of the prior year.

"In Q1, O2Micro was again profitable. The Company continues to build its base for future growth with additions to key engineering resources, and product and patent portfolios. During Q1, O2Micro received patent issues of 15 patents with 349 claims. As of this date O2Micro has 184 issued patents with 4,733 issued claims," commented Sterling Du, Chairman and CEO of O2Micro.

Conference Call: O2Micro will hold its first quarter conference call today at 2:00 p.m. PDT, 5:00 p.m. EDT, and 5:00 a.m. (May 4, 2006) Hong Kong time. You may participate using the following dial-in information.



 In the U.S. and CANADA:           888-802-2239, pass code No. 2347111
 In HONG KONG:                     800-965-503, pass code No. 2347111
 Other INTERNATIONAL participants: 913-312-1269, pass code No. 2347111

A replay of the call will be available by phone until May 10th using the following dial-in information.



 In the U.S. and CANADA:           888-203-1112, pass code No. 2347111
 In HONG KONG:                     800-908-709, pass code No. 2347111
 Other INTERNATIONAL participants: 719-457-0820, pass code No. 2347111

A live simulcast will also be available on the company website at www.o2micro.com, and an online replay will be available on the website for one week.

About O2Micro

Founded in April 1995, O2Micro develops and markets innovative power management, and security components and systems for the Computer, Consumer, Industrial, and Communications markets. Products include Intelligent Lighting, Battery Management, Power Management, SmartCardBus(r) and Security products, such as VPN/Firewall system solutions.

O2Micro International maintains an extensive portfolio of intellectual property with 4,733 patent claims granted, and over 5,000 more pending. The company maintains offices worldwide. Additional company and product information can be found on the company website at www.o2micro.com.

O2Micro, the O2Micro logo, SmartCardBus and combinations thereof are registered trademarks of O2Micro.

Certain statements in this release are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. They include statements regarding O2Micro's future growth, expansion of O2Micro's product and patent portfolios, legal expenditures, litigation activity and other statements regarding O2Micro's or management's intentions, hopes, beliefs, expectations, representations, projections, plans or predictions of the future. Such statements involve risks and uncertainties that may cause actual results to differ materially from those set forth in these statements. Factors that could cause actual results to differ materially include risks and uncertainties such as reduced demand for products of electronic equipment manufacturers which include O2Micro's products due to adverse economic conditions in general or specifically affecting O2Micro's markets, technical difficulties and delays in the development process, and errors in the products. You are also referred to the Form F-1 in connection with the company's initial public offering in August 2000, Form F-3 in connection with the company's public offering in November 2001, and the annual reports on Form 20-F, which identify important risk factors that could cause actual results to differ from those contained in the forward-looking statements. The company assumes no obligation to update or revise any forward-looking information, whether as a result of new information, future events or otherwise.



            O2Micro International Limited and Subsidiaries
    Consolidated Statements of Operations and Comprehensive Income
                              (Unaudited)
         (In Thousand U.S. Dollars, Except Per Share Amounts)


                                                   Three Months Ended
                                                         March 31
                                                         --------
                                                    2006         2005
                                                    ----         ----

 NET SALES                                         $29,109     $23,277

 COST OF SALES                                      12,807       8,930
                                                 ---------   ---------

 GROSS PROFIT                                       16,302      14,347
                                                 ---------   ---------

 OPERATING EXPENSES
 Research and development                            6,788       5,330
 Selling, general and administrative                 6,223       4,664
 Patent litigation                                   2,261       2,536

 Stock-based compensation                              689           0
                                                 ---------   ---------
 Total Operating Expenses                           15,961      12,530
                                                 ---------   ---------

 INCOME FROM OPERATIONS                                341       1,817
                                                 ---------   ---------

 NON-OPERATING INCOME (EXPENSES)
 Interest income                                       899         608
                                                                            
 Foreign exchange gain (loss)                           31  (       10)
 Other - net                                            43  (       12)
                                                 ---------   ---------
 Total Non-operating Income                            973         586
                                                 ---------   ---------

 INCOME BEFORE INCOME TAX                            1,314       2,403

 INCOME TAX EXPENSE                                    283         314
                                                 ---------   ---------
 
 NET INCOME                                          1,031       2,089

 OTHER COMPREHENSIVE INCOME
 Translation adjustments on subsidiaries               230         229
 Unrealized gain (loss) on 
  available-for-sale securities                  (      85)        284
                                                 ---------   ---------
                                                                
 Total Other Comprehensive Income (Loss)               145         513
                                                 ---------   ---------

 COMPREHENSIVE INCOME                            $   1,176   $   2,602
                                                 =========   =========

 EARNINGS PER SHARE:

 Basic                                           $  0.0005   $  0.0010
                                                 =========   ========= 
 Diluted                                         $  0.0005   $  0.0010
                                                 =========   =========
 EARNINGS PER ADS:

 Basic                                                0.03        0.05
 Diluted                                              0.03        0.05

 SHARES USED IN EARNINGS PER 
  SHARE CALCULATION:
 Basic (in thousands)                            1,963,634   1,958,900
                                                 =========   =========
  Diluted (in thousands)                         1,994,263   1,978,550
                                                 =========   =========

 ADS UNITS USED IN EARNINGS 
  PER ADS CALCULATION:
 Basic (in thousands)                               39,273      39,178
 Diluted (in thousands)                             39,885      39,571


                            
            O2Micro International Limited and Subsidiaries
                      Consolidated Balance Sheets
           (In Thousand U.S. Dollars, Except Share Amounts)


                                                 March 31,   Dec. 31,
                                                   2006        2005
                                                   ----        ----
 A S S E T S                                   (Unaudited)
 -----------

 CURRENT ASSETS
 Cash and cash equivalents                      $  58,846    $  46,375
 Restricted cash                                    5,614        5,605
 Short-term investments                            40,728       55,653
 Accounts receivable - net                         14,217       11,460
 Inventories                                       14,721       15,943
 Prepaid expenses and other current 
  assets                                            7,087        6,665
                                                ---------    ---------
 Total Current Assets                             141,213      141,701
                                                ---------    ---------
 
 LONG-TERM INVESTMENTS                             16,828       16,898
                                                ---------    ---------

 LAND, PROPERTY AND EQUIPMENT - NET                23,988       23,319
                                                ---------    ---------

 OTHER ASSETS

 Restricted assets - net                           14,575       14,492
                                                ---------    ---------
 Other Assets                                       3,286        3,245
                                                ---------    ---------

 TOTAL ASSETS                                   $ 199,890    $ 199,655
                                                =========    =========

 LIABILITIES AND SHAREHOLDERS' EQUITY

 CURRENT LIABILITIES
 Notes and accounts payable                     $   6,563    $   5,760
 Income taxes payable                               4,059        3,907
 Accrued expenses and other current 
  liabilities                                      11,301       14,092
                                                ---------    ---------
 Total Current Liabilities                         21,923       23,759
                                                ---------    ---------

 COMMITMENTS AND CONTINGENCIES

 SHAREHOLDERS' EQUITY
 Preference shares at $0.00002 par 
  value per share
   Authorized - 250,000,000 shares                    -           -
 Ordinary shares at $0.00002 par 
  value per share
   Authorized - 4,750,000,000 shares
    Issued - 1,954,167,750 and 
     1,967,824,350 shares as of 
     March 31, 2006 and December 31, 
     2005, respectively                                39           39
 Treasury stock - 0 and 15,030,000 
  shares as of March 31, 2006 and 
  December 31, 2005, respectively                     -      (   3,296)
 Additional paid-in capital                       141,444      141,532
 Accumulated other comprehensive loss           (     972)   (   1,118)
 Retained earnings                                 37,456       38,739
                                                ---------    ---------
 Total Shareholders' Equity                       177,967      175,896
                                                ---------    ---------

 TOTAL LIABILITIES AND SHAREHOLDERS' 
  EQUITY                                        $ 199,890    $ 199,655
                                                =========    =========


            

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