Exhibit 15.1

Consent of Independent Registered Public Accounting Firm

The Board of Directors

Himax Technologies, Inc.:

We consent to the incorporation by reference in the registration statement (No. 333-137585) on Form S-8 of Himax Technologies, Inc. and subsidiaries of our reports dated May 11, 2011, with respect to the consolidated balance sheets of Himax Technologies, Inc. as of December 31, 2010 and 2009, and the related consolidated statements of income, comprehensive income, equity and cash flows for each of the years in the three-year period ended December 31, 2010, and the effectiveness of internal control over financial reporting as of December 31, 2010, which reports appear in the December 31, 2010 annual report on Form 20-F of Himax Technologies, Inc.

Our report dated May 11, 2011, contains an explanatory paragraph that states that the Company adopted the measurement date provisions of Accounting Standards Codification Subtopic 715-20, “Compensation-Retirement Benefits-Defined Benefit Plans”, as of December 31, 2008.

/s/ KPMG

Taipei, Taiwan (the Republic of China)

May 20, 2011