AUO's PowerLegato Makes Its Debut at Intersolar Europe

HSINCHU, Taiwan, June 4, 2013 /PRNewswire/ -- AU Optronics Corp. ("AUO" or the "Company") (TAIEX: 2409; NYSE: AUO) announced today that PowerLegato, its first residential energy storage system designed specifically for the European market, will be launched at Intersolar Europe 2013 and available this coming Fall. PowerLegato is an integrated solution capable of supporting hybrid energy inputs and outputs, and ensures safe operation with its EnergyOptimizer and battery management system (BMS).

Eligible for German incentive program, PowerLegato is specifically designed to enable customers to better harness energy utilization in the current market environment, where the primary concern of using renewable energy is its stability in supply and self-consumption. The smart energy storage system includes battery modules, inverter, charger, battery management system (BMS), and energy management system. The all-in-one pack contains complete but fewer components to ensure quicker system installation.

To make it all the more compact, advanced lithium-ion batteries with high volume energy density are used to achieve ultra long battery cycles. PowerLegato also supports hybrid energy inputs and outputs. Users can switch freely between photovoltaic's DC and grid's AC sources. When PowerLegato is installed with a PV system, the main power supply will come from the PV system in the daytime, and PV sells surplus power to the grid after PowerLegato is fully charged. In the nighttime or on a cloudy day, the power stored in PowerLegato can be used first, and that from grid acts as a backup.

The specially devised hybrid inverter and charger architecture, in addition to the bundled EnergyOptimizer software and BMS, helps users to obtain maximized power independence and ensure safe operation and longer battery life. The system, with one switch only and an intuitive, password-controlled touch panel, is a perfect fit for homeowners to operate efficiently and safely.

PowerLegato's ergonomic design has won iF and red dot 2013 design awards. To top it all, the sleek and stylish device has been recruited by red dot to be exhibited in its design museum in Singapore from August 1, 2013 to July 31, 2014.

AUO has long been dedicated to providing innovative green solutions. The Company will continue to develop user-friendly, reliable energy management products for smart homes worldwide to assist customers in realizing energy freedom.

AUO photos can be downloaded at the Company's website:

http://auo.com/?sn=479&lang=en-US

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

ABOUT AU OPTRONICS

AU Optronics Corp. (AUO) is one of the world's leading providers of optoelectronic solutions. AUO offers a full range of panel sizes and comprehensive applications ranging from 1.5 inches to 65 inches. Based on its profound R&D and manufacturing experience, AUO continues to develop advanced display technologies of the next generation. AUO extended its market to the green energy industry in 2008. By building a vertically integrated high-efficiency solar value chain, AUO provides its customers with high-efficiency solar solutions. AUO now houses a staff of more than 45,000 employees, with global operations in Taiwan, Mainland China, the U.S., Japan, South Korea, Singapore, the Netherlands, Czech and Slovakia. Additionally, AUO is the first pure TFT-LCD manufacturer to be successfully listed at the New York Stock Exchange (NYSE). AUO has also been named to Dow Jones Sustainability World Index for three consecutive years from 2010 to 2012. AUO generated NT$378.5 billion (US$ 13.03 billion) in sales revenue in 2012. For more information, please visit AUO.com.

* 2012 year end revenue converted at an exchange rate of NTD29.05 : USD 1.

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 March 15th, 2013.