AUO's Solar Reliability Lab Certified by UL Witness Test Data Program

The first manufacturer in Taiwan with four certification marks for professional testing

HSINCHU, Taiwan, August 4, 2010 - AU Optronics Corp. ("AUO" or the "Company") (TAIEX: 2409; NYSE: AUO)
announced today that its PV QRA Lab in Taichung officially acquired the UL
Witness Test Data Program (UL WTDP) lab certification. The Company's lab is
the first in Taiwan with four certification marks for professional testing
(IEC 61215, IEC 61646, IEC 61730 and UL 1703).

UL WTDP is the Witnessed Test Data Program conducted by UL, a global
leader for product safety testing and certification. Having passed the
assessment of UL WTDP, manufacturers could then have tests conducted at the
certified test facilities under the supervision of UL personnel. This allows
schedules to be easily maintained and information reviewed readily on-site.

As it is necessary for solar-related components and modules to achieve at
least 25 years of power performance, AUO has invested around three million
U.S. dollars when entering the solar business to set up a reliability lab for
the testing of product function and durability under extreme weather
conditions. "We are glad that AUO's solar reliability lab acquired the UL
WTDP lab certification, proving the Company's professional capabilities in
solar product testing," said James C.P. Chen, Senior Associate Vice President
of Solar Photovoltaic Business Unit. "The lab will be able to conduct over 33
kinds of tests, all conforming to UL and IEC regulations. This demonstrates
that AUO owns world-class testing capabilities, equipment and lab," he added.

Having become a UL WTDP certified lab, AUO will be able to perform
certification tests including UL1703, IEC 61215, IEC 61646 and IEC 61730. The
difficulties in transporting large-sized solar products will also be
overcome, as the products could then be sent to the certified professional
testing facilities. More time would be saved in terms of scheduling,
transportation and testing. Risks and cost are reduced as well during the
transportation of the samples. In addition, complete testing information
could be collected readily on-site for further analysis. The professional
personnel and testing facilities at AUO's solar reliability lab serve not
only the Company to accelerate its R&D process, but also customers who will
be able to enjoy the efficient and convenient services.

AUO photos can be downloaded at the Company's website:
auo.com/auoDEV/pressroom.php?sec=Photos&ls=en

Any use of photographs must cite the source thereof is from AU Optronics
Corporation.

ABOUT AU OPTRONICS

AU Optronics Corp. (AUO) is a global leader of thin film transistor
liquid crystal display panels (TFT-LCD). AUO is able to provide customers
with a full range of panel sizes and comprehensive applications, offering
TFT-LCD panels in sizes ranging from 1.2 inches to greater than 65 inches.
AUO generated NT$359.3 billion (US$11.2 billion) in sales revenue* in 2009
and now houses a staff of more than 42,000 employees, with global operations
in Taiwan, Mainland China, Japan, Singapore, South Korea, the U.S., and
Europe. Additionally, AUO is the first pure TFT-LCD manufacturer to be
successfully listed at the New York Stock Exchange (NYSE). AUO extended its
market to the green energy industry in late 2008, and formally founded its
Solar Photovoltaic Business Unit in October 2009. For more information,
please visit AUO.com.

Safe Harbour Notice

AU Optronics Corp. ("AUO" or the "Company") (TAIEX: 2409; NYSE: AUO), a
global leader of TFT-LCD panels, today announced the above news. Except for
statements in respect of historical matters, the statements contained in this
Release are "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. These forward-looking statements were based on our
management's expectations, projections and beliefs at the time regarding
matters including, among other things, future revenues and costs, financial
performance, technology changes, capacity, utilization rates, yields, process
and geographical diversification, future expansion plans and business
strategy. Such forward looking statements are subject to a number of known
and unknown risks and uncertainties that can cause actual results to differ
materially from those expressed or implied by such statements, including
risks related to the flat panel display industry, the TFT-LCD market,
acceptance of and demand for our products, technological and development
risks, competitive factors, and other risks described in the section entitled
"Risk Factors" in our Form 20-F filed with the United States Securities and
Exchange Commission on May 11th, 2010.

Freda Lee, Corporate Communications Division of AU Optronics Corp., +886-3-5008800 x3206, +886-3-5772730 (fax) or freda.lee at auo.com; Yawen Hsiao, Corporate Communications Division of AU Optronics Corp., +886-3-5008800 x3211, +886-3-5772730 (fax) or yawen.hsiao at auo.com