Exhibit 23.1 CONSENT OF INDEPENDENT ACCOUNTANTS We hereby consent to the incorporation by reference in this Form S-8 of our report dated July 25, 2000 relating to the consolidated financial statements of United Microelectronics Corporation and its Subsidiaries for the year ended December 31, 1999. /s/ PricewaterhouseCoopers - -------------------------- PricewaterhouseCoopers Taipei, Taiwan January 20, 2003 CONSENT OF INDEPENDENT ACCOUNTANTS We hereby consent to the incorporation by reference in this Form S-8 of our report dated January 21, 2000 relating to the financial statements of United Semiconductor Corporation for the year ended December 31, 1999. /s/ PricewaterhouseCoopers - -------------------------- PricewaterhouseCoopers Taipei, Taiwan January 20, 2003