Patent for EEFL Protection System Granted to OMicro

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March 7, 2011.O₂Micro® International Limited (NASDAQ®:

OIIM

) was issued 20 claims underUnited States patent number 7,888,889 for its External Electrode Fluorescent Lamp (EEFL) System Protection architecture; a continuation of the invention issued June 2009 under United States patent number 7,554,273.

The patented EEFL protection circuitry protects large panel backlight systems during normal operation if any lamp is damaged or disconnected. Large panel applications include LCD Monitors and TVs.

“O₂Micro's system protection architecture provides the most effective safety solution for the LCD panel market,” said Dr. Yung Lin, executive vice president, O₂Micro.

About O₂Micro

Founded in April 1995, O₂Micro develops and markets innovative power management and e-commerce components for the Computer, Consumer, Industrial, and Communications markets. Products include Intelligent Lighting, Battery Management, Power Management,and SmartCardBus®.

O₂Micro International maintains an extensive portfolio of intellectual property with 15,621 patent claims granted, and over 16,000 more pending. The company maintains offices worldwide. Additional company and product information can be found on thecompany website at www.o2micro.com.

O₂Micro, the O₂Micro logo, SmartCardBus, and combinations thereof are registered trademarks of O₂Micro. All other trademarks or registered trademarks are the property of their respective owners.

Contact Information:
Gary E. Abbott
Director of Investor Relations, O₂Micro
Phone: 408.987.5920. x8888
Email:gary.abbott@o2micro.com

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