发明名称 LIQUID CRYSTAL OPTICAL ELEMENT, AND PROJECTION DISPLAY DEVICE USING THE SAME
摘要 <P>PROBLEM TO BE SOLVED: To provide a liquid crystal element having a high contrast ratio with small variation in plane by phase-compensating a VA mode liquid crystal panel. <P>SOLUTION: The liquid crystal element includes the VA mode liquid crystal panel 3, a pair of polarizing plates 2 and 3 arranged so that the transmission axes are orthogonal to each other, and a phase compensation element 6 consisting of two phase difference plates 4 and 5 arranged between the pair of polarizing plates. The optical axes of the two phase difference plates are orthogonal to each other. When it is assumed that the in-plane retardations between the phase difference plates are Rd(450), Rd(550) and Rd(650) at wavelengths of 450 nm, 550 nm and 650 nm, respectively, the relations of formula (1): Rd(450)/Rd(550)&le;1.00 and formula (2): Rd(450)/Rd(650)&le;1.00 are established. <P>COPYRIGHT: (C)2011,JPO&INPIT
申请公布号 JP2011053524(A) 申请公布日期 2011.03.17
申请号 JP20090203539 申请日期 2009.09.03
申请人 ASAHI GLASS CO LTD 发明人 HASEGAWA MAKOTO;OSAWA MITSUO
分类号 G02F1/13363;G02F1/13;G02F1/1335;G03B21/14 主分类号 G02F1/13363
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