O2Micro Granted Patent

SANTA CLARA, Calif. & GEORGE TOWN, Grand Cayman--(BUSINESS WIRE)--June 3, 2003--O2Micro® International Limited (Nasdaq:OIIM - News), a leading supplier of innovative power management and security ICs to mobile computer and communications manufacturers, was granted 29 claims under United States patent number 6,570,344 for its Inverter Lamp Grounding and Leakage Current Detection System.

The Lamp Grounding and Leakage Current Detection System provides a precise method for controlling CCFL current in multiple CCFL Common Ground Panel applications. The control method provides a tighter current tolerance amongst the lamps, resulting in a higher quality display with better uniformity of brightness and longer CCFL life. This patented methodology is ideal for LCD Monitor and TV, Notebook, DVD Player, and Game applications.


"This patent grant reduces backlight module assembly cost -- the cost per CCFL decreases as the number of CCFLs increase -- and simplifies CCFL wiring. This methodology is most advantageous when CCFLs are connected to LCD panel chassis," said Dr. Yung Lin executive vice president of O2Micro's Intelligent Lighting business unit.


About O2Micro


Founded in April 1995, O2Micro designs, develops and markets innovative power management and security components for mobile communication, computer, information appliance, and LCD products. Products include AudioDJ®, SmartCardBus® for secure on line e-commerce, Intelligent Lighting and Battery Management IC's.


O2Micro International maintains an extensive portfolio of intellectual property with 1144 patent claims granted, and over 4000 more pending. The company maintains offices worldwide. Additional company and product information can be found on the company website at www.o2micro.com.


Statements made in this release that are not historical, including statements regarding O2Micro's or management's intentions, hopes, beliefs, expectations, representations, projections, plans or predictions of the future, are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. 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 documents filed by O2Micro with the SEC from time to time, including but not limited to the Form F-1 in connection with the company's initial public offering in August 2000, which identify important risk factors that could cause actual results to differ from those contained in the forward-looking statements.





Grace Louh, 408/987-5920, Ext. 8051