AU Optronics Corp. Reports 2Q2010 Financial Results

HSINCHU, Taiwan, July 28, 2010 - AU Optronics Corp. ("AUO" or the "Company") (TAIEX: 2409; NYSE: AUO)
today held its investors conference and announced its unaudited results for
the second quarter of 2010(1).

For the second quarter ended June 30, 2010, AUO posted consolidated
revenue of NT$128,586 million (US$3,985 million)(2), up 15.3% from the
previous quarter. Gross profit improved 42.4% quarter-over-quarter to
NT$20,324 million (US$630 million), while operating profit grew 62.6%
quarter-over-quarter to NT$13,215 million (US$410 million). AUO's net income
came in at NT$11,246 million (US$348 million), up 54.6% quarter-over-quarter.
Net Income attributable to equity holders of the parent company was NT$10,957
million (US$340 million), with basic EPS of NT$1.24 per common share (US$0.38
per ADR).

For the first half of 2010, AUO reported consolidated revenues of
NT$240,150 million (US$7,442 million), with net income of NT$18,520 million
(US$574 million) or basic EPS of NT$2.05 per common share (US$0.63 per ADR).

2Q2010 Result Highlights

AUO reported the following unaudited consolidated highlighted results for
the second quarter of 2010:

    -- Revenue of NT$128,586 million, up 15.3% quarter-over-quarter
    -- Net income of NT$11,246 million
    -- Basic EPS of NT$1.24 per common share
    -- Gross margin of 15.8%
    -- Operating margin of 10.3%
    -- EBITDA(3) margin of 27.5%

For the second quarter, AUO's large-sized panels reached 29.62 million
units, up 8.8% quarter-over-quarter and 32.2% year-over-year. Shipments of
small- and medium-sized panels exceeded 55.43 million units, down 2.7%
quarter-over-quarter and 8.9% year-over-year. For the first half of 2010,
AUO's large-sized panels totaled 56.84 million units and small- and
medium-sized panels exceeded 112.42 million units.

"AUO's second quarter results were generally in line with our guidance
set in the Investor Conference on April 22," said Mr. Andy Yang, Chief
Financial Officer of AUO. "Thanks to a better product mix, growing adoption
rates of LED backlights in high-end panels and nearly full capacity
utilization rates, our gross margin increased from last quarter's 12.8% to
15.8% this quarter. Operating margin also increased from 7.3% last quarter to
10.3%, while EBITDA margin maintained at 27.5%. Starting from last year, AUO
has been actively forging strategic alliances with our customers. These
alliances are bringing synergies to us. By working closely with clients and
involving early in the design stages under a win-win interactive mode, we are
able to better understand the end demand, especially for the high-end
products, and timely respond to the market trends."

AUO has officially acquired the G4.5 fab of Toshiba Mobile Display Co.,
Ltd. ("TMD") in Singapore, effective on July 1. This fab will bring in
approximately 45,000 sheets of LTPS (low temperature polysilicon) capacity
per month, which enables AUO to better serve its customers in the high-end
display markets. In the meantime, AUO will continue to strengthen its
alliances with customers and adjust its product portfolio in order to
optimize values created by capacity utilization.

(1) All financial information was unaudited and was prepared by the
Company in accordance with generally accepted accounting principles in Taiwan
("ROC GAAP").

(2) Amounts converted by an exchange rate of NTD32.27:USD1 based on
Federal Reserve Bank of New York, USA as of June 30, 2010.

(3) EBITDA=Operating Income +D&A, that is, operating income before
depreciation and amortization.

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
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.

* 2009 year end revenue converted at an exchange rate of NTD31.95:USD1.

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