Hsinchu, Taiwan

AUO Corporation ("AUO" or the "Company") (TAIEX: 2409; NYSE: AUO) today announced preliminary consolidated December 2005 monthly revenues, which reached a record high of NT$24,592 million, while unconsolidated net sales totaled NT$24,589 million, both representing an increase of 1.6% sequentially. On a year-over-year comparison, December 2005 consolidated revenues increased by 84.4%, while unconsolidated net sales rose by 89.1%.

Driven primarily by shipments of large-sized panels^(a) used in desktop monitor, notebook PC, LCD TV and other applications, the new record reached a high of 3.32 million, a 4.7% increase from November 2005. Shipments of small- and medium-sized panels declined to total 4.35 million, a 17.5 % sequential decrease due to seasonal demand.

Preliminary shipments of large-sized panels for the fourth quarter reached 9.60 million, a 20.4% sequential increase, while shipments for small- and medium-sized panels declined to total 14.17 million, a 19.4 % sequential decrease due to seasonal demand. Unit sales across the board exceeded fourth quarter guidance, provided on October 25, 2005, primarily contributed by the smooth ramp-up of AUO’s Gen. 6 fabrication facility.

For the year ended December 31, 2005, unaudited consolidated and unconsolidated revenue totaled NT$217,388 million and NT$217,295 million respectively, representing 29.3% and 32.0% Y-o-Y growth. Unit shipments increased by 62.6% for large-sized panels and 62.2% for small- and medium-sized panels.

(a) Large-size refers to panels that are 10 inches and above in diagonal measurement while small- and medium-size refers to those below 10 inches

Sales Report：

(Unit：NT$ million)