Design and Analysis of Color Separation Grating by Using Fresnel Diffraction Theory

  • Chen, Chien-Hung (Graduate Institute of Electro-Optical Engineering and Department of Electrical Engineering, National Taiwan University) ;
  • Lin, Hoang-Yan (Graduate Institute of Electro-Optical Engineering and Department of Electrical Engineering, National Taiwan University)
  • Published : 2006.08.22

Abstract

We use the color separation grating (CSG) to split colored light into the sub-pixel of LCD to enhance the optical efficiency as compared with that of using color filter. Based on the Fresenl diffraction theory, the theoretical optical efficiency can reach 66-81%, ranging almost from 2 to 2.5 times of that using color filters.

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