EXHIBIT 13.1



               TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LIMITED

                                  Certification

     Pursuant to 18 U.S.C. Section 1350, the undersigned, Rick Tsai, Chief
Executive Officer of Taiwan Semiconductor Manufacturing Company Limited (the
"Company"), hereby certifies, to his knowledge, that the Company's annual report
on Form 20-F for the year ended December 31, 2007 (the "Report") fully complies
with the requirements of Section 13(a) or 15(d), as applicable, of the
Securities Exchange Act of 1934, and that the information contained in the
Report fairly presents, in all material respects, the financial condition and
results of operations of the Company.



Date: April 15, 2008

                                            By:/s/ Rick Tsai
                                               ---------------------------------
                                               Name:  Rick Tsai
                                               Title: Chief Executive Officer


     The foregoing certification is being furnished solely pursuant to 18 U.S.C.
Section 1350 and is not being filed as part of the Report or as a separate
disclosure document.