发明名称 Reflection type liquid crystal display device
摘要 A reflection type liquid crystal display device having a wide viewing angle, and capable of assuring a light utilization factor at or above a certain value for bright display even when conditions of an external light are varied is provided. The reflection type liquid crystal display device comprises (a) a liquid crystal cell comprising an upper substrate, a lower substrate and a liquid crystal layer between the substrates,(b)a polarizing film provided in a side of the upper substrate in the liquid crystal cell, (c) light reflecting means provided in a side of the lower substrate in the liquid crystal cell; and (d) an optical member provided between the polarizing film and the liquid crystal cell, and having a retardation axis when it is viewed in the normal direction. An angle between an absorption axis of the polarizing film and the retardation axis of the optical member is within a range of about 88 DEG to about 92 DEG or about -2 DEG to about +2 DEG . A retardation value in relation to the normal direction of the optical member is within a range of about 50 nm to about 500 nm.
申请公布号 EP0982623(A3) 申请公布日期 2001.08.08
申请号 EP19990306365 申请日期 1999.08.12
申请人 MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD 发明人 YAMAGUCHI, HISANORI;SEKIME, TOMOAKI;IWAI, YOSHIO;OGAWA, TETSU
分类号 G02F1/1347;G02F1/1335;G02F1/13363;G02F1/1343;G02F1/139 主分类号 G02F1/1347
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