Diffractive color separation filter for high-efficiency LCD panels

Peter S. Erbach; Gregg T. Borek; David R. Brown; Thomas V. Gunn

doi:10.1117/12.344655

12 April 1999 Diffractive color separation filter for high-efficiency LCD panels

Peter S. Erbach, Gregg T. Borek, David R. Brown, Thomas V. Gunn

Proceedings Volume 3636, Flat Panel Display Technology and Display Metrology; (1999) https://doi.org/10.1117/12.344655
Event: Electronic Imaging '99, 1999, San Jose, CA, United States

Abstract

Current AMLCD panel pixels are divided into sub-pixels each covered by red, green, or blue absorptive color filters to transmit each of the color components. This method discards 2/3 of available light and causes these displays to be highly inefficient. Using a diffractive color separation filter, DCSF, a much higher percentage of energy from the back-light is used in the display, which can be translated into higher brightness and lower power consumption. Such a DCSF is designed to separate the colors and focus the desired bands onto the apertures of the color pixels. The black matrix is used to block the undesired wavebands. Two basic prototype models were designed and fabricated. The first filter design constraints focusing elements and the second filter contains no focusing elements. This paper present testing results from the two prototype diffractive color separation filter designs.

Citation Download Citation

Peter S. Erbach, Gregg T. Borek, David R. Brown, and Thomas V. Gunn "Diffractive color separation filter for high-efficiency LCD panels", Proc. SPIE 3636, Flat Panel Display Technology and Display Metrology, (12 April 1999); https://doi.org/10.1117/12.344655

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