AUO Files Form 20-F for 2006 with US Securities and Exchange Commission

AU Optronics Corp. ("AUO") (TAIEX: 2409; NYSE: AUO) today filed its 2006 annual report on Form 20-F with the US Securities and Exchange Commission. The report is available at http://auo.com/auoDEV/investors.php?sec=usSecFilings&func=ussecfilings_info &se rial=12&ls=en .

Shareholders may request a hard copy of the 20-F free of charge. Please forward your request via http://citibank.ar.wilink.com .

About AU Optronics

AU Optronics Corp. (''AUO'') is one of the top three largest manufacturers* of large-size thin film transistor liquid crystal display panels (''TFT-LCD"), with approximately 20.1%* of global market share with revenues of NT$293.1billion (US$9.0bn)* in 2006. TFT-LCD technology is currently the most widely used flat panel display technology. Targeted for 40''+ sized LCD TV panels, AUO's new generation (7.5-generation) fabrication facility production started mass production in the fourth quarter of 2006. The Company currently operates one 7.5-generation, two 6th-generation, four 5th-generation, one 4th-generation, and four 3.5-generation TFT- LCD fabs, in addition to eight module assembly facilities and the AUO Technology Center specializes in new technology platform and new product development. AUO is one of few top-tier TFT-LCD manufacturers capable of offering a wide range of small- to large- size (1.5"-65") TFT-LCD panels, which enables it to offer a broad and diversified product portfolio.

* DisplaySearch 1Q2007 WW Large-Area TFT-LCD Shipment Report dated May 5,

2007. This data is used as reference only and AUO does not make any endorsement or representation in connection therewith. 2006 year end revenue converted by an exchange rate of NTD32.59: USD1.

Safe Harbour Notice

AU Optronics Corp. (''AUO'' or the ''Company'') (TAIEX: 2409; NYSE: AUO), the world's third largest manufacturer of large-size 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 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 June 29, 2007.