Patent Office Approves O2Micro's Photoflash Diode Invention

GEORGE TOWN, Grand Cayman--(Business Wire)--
O2Micro(R) International Limited (NASDAQ:OIIM) (SEHK:0457), a
leading supplier of innovative power management, and security
components and systems, was issued 21 claims under United States
patent number 7,375,472 for its Photoflash Diode driver invention.

This invention provides a circuit and control method to drive
current through photoflash diodes used in portable devices like
digital still cameras. Portable devices drive photoflash diodes using
a controller to coordinate the use of battery power.

"O2Micro's patented driver architecture provides an efficient and
cost effective way of driving the photoflash diode," remarked Laszlo
Lipcsei, vice president, O2Micro. Mr. Lipcsei continued, "This
translates into longer battery life for portable devices."

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 10,001 patent claims granted, and over
12,000 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. All other trademarks are the
property of their respective owners.

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
developments 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
Gary E. Abbott, 408-987-5920 ext. 8888
Director of Investor Relations,
gary.abbott@o2micro.com

Copyright Business Wire 2008