发明名称 DISPLAY MEDIUM, DISPLAY DEVICE USING THE SAME, AND REVERSIBLE DISPLAY BODY
摘要 <P>PROBLEM TO BE SOLVED: To provide a display medium with which a high-contrast display with excellent visibility is obtainable, and a display device and a reversible display body using the display medium. <P>SOLUTION: The display medium consists of a display cell and a display composition contained in the display cell. The display cell consists of a light absorptive substrate having an electrode and a homeotropic liquid crystal alignment layer, with 80&deg; or larger pretilt angle existing on the electrode surface, on a surface of the one side, and a transparent substrate having a transparent electrode and a homeotropic liquid crystal alignment layer, with 80&deg; or larger pretilt angle existing on the electrode surface, on a surface of the one side. The display composition is composed of a dual-frequency drive liquid crystal composition having 0.3-1.2 &mu;m helical pitch and a gelation agent. <P>COPYRIGHT: (C)2004,JPO&NCIPI
申请公布号 JP2004226552(A) 申请公布日期 2004.08.12
申请号 JP20030012510 申请日期 2003.01.21
申请人 RICOH CO LTD 发明人 HARADA NARIYUKI
分类号 G02F1/13;G02F1/1334;G02F1/1337;G06K19/07 主分类号 G02F1/13
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