Hsinchu Science Park, Taiwan, April 21st, 2006 - Sunplus Technology Co., Ltd. (TAIEX: 2401, LSE: SUPD) today announces its financial results of 1st Quarter in 2006. The sales of 1Q'06 summed up NT$5,015million, which grew 20.4% comparing with 1Q'05. The gross margin in 1Q'06 was improved to 31.4% since gross margin in 1Q'05 was 25.4%. The net profits in 1Q'06 were NT$1,034million and the earnings per share in 1Q'06 were NT$1.1 based on the outstanding 949,784,355 shares on March 31st 2006.

(in NT$ thousand) 1Q'06 1Q'05 YoY Net Sales 5,015,000 100.0% 4,163,961 100.0% 20.4% Gross Margin 1,575,942 31.4% 1,057,184 25.4% 49.1% Operating Income 592,455 11.8% 288,419 6.9% 105.4% Net Income 1,034,107 20.6% 179,085 4.3% 477.4% EPS (NT$) * Based on outstanding 949,784,355 shares on 2006/3/31 1.1 0.2

(in NT$ thousand) 1Q'06 4Q'05 QoQ Net Sales 5,015,000 100.0% 5,239,744 100.0% -4.3% Gross Margin 1,575,942 31.4% 1,926,123 36.8% -18.2% Operating Income 592,455 11.8% 964,677 18.4% -38.6% Net Income 1,034,107 20.6% 851,361 16.2% 21.5% EPS (NT$) * Based on outstanding 949,784,355 shares on 2006/3/31 1.1 0.90