发明名称 Liquid crystal display device having high brightness and high contrast
摘要 A liquid crystal display having high brightness and high contrast and being able to achieve a paper-white appearance is provided. The liquid crystal cell is interposed between a pair of polarizing plates. The upper polarizing plate separates an incident light into a reflected light and a transmitted light. A light which would be absorbed when the dichroic polarizing plate is used, is utilized as a reflected light, so that a high brightness can be obtained. The lower polarizing plate partly transmits incident light and absorbs the remaining part. A reflected light from the lower polarizing plate is removed, so that the possible occurrence of a reduction in contrast attributed to the phenomenon that the reflected light is reflected on the upper polarizing plate is prevented. The upper polarizing plate has a flat spectral characteristic with regard to the reflected light and the transmitted light, and a* value and b* value of which plate are each smaller than 1. Therefore, no coloring occurs in the reflected light and the transmitted light at the upper polarizing plate, so that the paper-white appearance can be easily achieved.
申请公布号 US5995180(A) 申请公布日期 1999.11.30
申请号 US19980098970 申请日期 1998.06.17
申请人 SHARP KABUSHIKI KAISHA 发明人 MORIWAKI, HIROYUKI;YOSHIMURA, KAZUYA;ASHIDA, TAKEYUKI
分类号 G02B5/30;G02F1/1335;G09F9/35;(IPC1-7):G02F1/133 主分类号 G02B5/30
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