Hsinchu, Taiwan

AUO Corporation ("AUO" or the "Company") (TAIEX: 2409; NYSE: AUO) today announced preliminary consolidated net sales of NT$13,339 million and unconsolidated net sales of NT$13,419 million for the month of December 2004^(a).

Preliminary December shipments of large-sized panels for applications such as desktop monitor, notebook PC, LCD TV, and other applications increased by 2.7% M-o-M to 1.94 million on strength in demand for monitor applications^(b). Preliminary shipments of small- and medium-sized panels for December rose 8.4% from November to 3.11 million. The better-than-seasonal performance in small- and medium-sized panels is mainly contributed by increasing shipments from new applications.

For the fiscal year 2004, preliminary unaudited consolidated revenues totaled NT$168.1 billion, a 60.3% increase over FY2003. Unconsolidated net sales revenues rise 69.1% from FY2003 to reach NT$165.0 billion. Preliminary unit shipments for large-sized and small- and medium-sized panels totaled 18.85 million and 33.29 million, representing significant growth of 59.8% and 54.9% from FY2003, respectively.

(a)Consolidated revenues for December 2004 adjusted to reflect averaged foreign exchange translation for the year of 2004
(b)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)