Presentation 2001/1/23
Improvement of the Transmitted Light Efficiency of the Multi-domain LCDs using Quarter Wave Plates
Yoshihisa Iwamoto, Yasufumi Iimura,
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Abstract(in English) For improving the transmitted light efficiency, we have theoretically and experimentally studied amorphous and multi-domain LCDs combined with two quarter wave plates. As a result, we obtained that the transmitted light efficiency of a multi-domain vertically aligned (MVA-) LCD panel was improved up to1.6 times that of a conventional panel. Then we studied on viewing angle characteristic of MVA-LCDs with two quarter wave plates, and found that it is necessary to use negative biaxial compensator for achieving wide-viewing zone. We also show that the further improvement of the efficiency can be achieved by using a cholesteric film and the obtained final improvement in the transmitted light efficiency of the LCD panel was over 2 times that of the conventional panel.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Quarter wave plate / Amorphous alignment / Multi-domain LCD / Vertical alignment / Cholesteric film
Paper # EID2000-266
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Committee EID
Conference Date 2001/1/23(1days)
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Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Improvement of the Transmitted Light Efficiency of the Multi-domain LCDs using Quarter Wave Plates
Sub Title (in English)
Keyword(1) Quarter wave plate
Keyword(2) Amorphous alignment
Keyword(3) Multi-domain LCD
Keyword(4) Vertical alignment
Keyword(5) Cholesteric film
1st Author's Name Yoshihisa Iwamoto
1st Author's Affiliation R&D Lab., Stanley Electric Co., Ltd.:Faculty of Technology, Tokyo University of Agriculture and Technology()
2nd Author's Name Yasufumi Iimura
2nd Author's Affiliation Faculty of Technology, Tokyo University of Agriculture and Technology
Date 2001/1/23
Paper # EID2000-266
Volume (vol) vol.100
Number (no) 602
Page pp.pp.-
#Pages 6
Date of Issue