AU Optronics Corp. May 2005 Consolidated Revenues Totaled NT$15.4 Billion

AU Optronics Corp. May 2005 Consolidated Revenues Totaled NT$15.4 Billion

HSINCHU, Taiwan, June 7 /Xinhua-PRNewswire-FirstCall/ -- AU Optronics Corp. ("AUO" or the "Company") (TAIEX: 2409; NYSE: AUO) today announced preliminary consolidated net sales of NT$15,380 million and unconsolidated net sales of NT$15,379 million for the month of May 2005. Preliminary shipments of large-sized panels(a) for applications such as desktop monitor, notebook PC, LCD TV, and other applications totaled 2.37 million, a 3.4% increase compared to April 2005. Shipments of small- and medium-sized panels decreased by 5.3% M-o-M to total 3.97 million due to product mix change. The Company remains confident that it will be able to achieve its second-quarter 2005 guidance announced on April 26 of unit shipments for both large-sized and small- and medium-sized panels.

Unaudited consolidated revenues for the month of May 2005 increased by 3.1%, while unconsolidated net sales rose 3.3% sequentially. On a year-over-year basis, May 2005 consolidated revenues decreased by 7.7%, while unconsolidated net sales declined by 7.5%. (a) Large size refers to panels that are 10 inches and above in diagonal measurement while small & medium size refers to those below 10 inches

Sales Report: (Unit: NT$ million)

Net Sales(1) (2) Consolidated(3) Unconsolidated

May 2005 15,380 15,379 April 2005 14,913 14,882 M-o-M Growth 3.1% 3.3 % May 2004 16,656 16,631 Y-o-Y Growth (7.7%) (7.5%) January to May 2005 69,130 69,058 January to May 2004 73,994 71,016 Y-o-Y Growth (6.6%) (2.8%)

(1) All figures are prepared in accordance with generally accepted accounting principles in Taiwan. (2) Monthly figures are unaudited, prepared by AU Optronics Corp. (3) Consolidated numbers include AU Optronics Corporation, AU Optronics (L) Corporation, and AU Optronics (Suzhou) Corporation.

About AU Optronics

AU Optronics Corporation (''AUO'') is the world's third largest manufacturer of large-size thin film transistor liquid crystal display panels (TFT-LCD), dominating approximately 13.6%(1) of global market share and generated net income of NT$168.1Billion (US$5.3 bn)(2) in 2004. AUO currently operates one 6th-generation, one 5th-generation, one 4th-generation, and three 3.5-generation TFT- LCD fabs, in addition to four module assembly facilities and a R&D fab. specializing in low temperature poly silicon TFT and organic LED. Currently the most widely used flat panel display technology, AUO is one of few top-tier TFT-LCD manufacturer globally, able to offer a wide range of small to large sized (1.5''-46") TFT-LCD display panels, which puts it in a unique position to service clients of diversified product applications.

(1) Display Search September 2004 (2) Report Unaudited consolidated and converted to USD by using Fed Noon FX Rate dated December 31st, 2004 of NT$31.74 : US$1

Safe Harbour Notice

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 and demand for our products, technological and development risks, competitive factors, and other risks described in the section entitled "Risk Factors" in our Form F-3 filed with the United States Securities and Exchange Commission on June 17, 2004.

For more information, please contact:

Yawen Hsiao, Corporate Communications Dept., AU Optronics Corp.

No.1, Li-Hsin Road 2, Science-Based Industrial Park, Hsinchu City, 300, Taiwan, R.O.C.

Tel: +886-3-500-8899 x3211 Fax: +886-3-577-2730 Email: yawenhsiao@auo.com

Source: AU Optronics Corporation

CONTACT: Yawen Hsiao, Corporate Communications Dept. of AU Optronics Corp., +886-3-500-8899 x3211, or fax +886-3-5772730, or yawenhsiao@auo.com

Web site: http://www.auo.com/

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