发明授权
- 专利标题: Reflective cholesteric liquid crystal display with complementary light-absorbing layer
- 专利标题(中): 具有互补光吸收层的反光胆甾型液晶显示器
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申请号: US10455050申请日: 2003-06-05
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公开(公告)号: US06950157B2公开(公告)日: 2005-09-27
- 发明人: Stanley W. Stephenson , Terry J. Martin
- 申请人: Stanley W. Stephenson , Terry J. Martin
- 申请人地址: US NY Rochester
- 专利权人: Eastman Kodak Company
- 当前专利权人: Eastman Kodak Company
- 当前专利权人地址: US NY Rochester
- 代理商 Chris P. Konkol
- 主分类号: C09D5/24
- IPC分类号: C09D5/24 ; G02F1/1334 ; G02F1/137 ; G02F1/1335 ; C09K19/02 ; C09K19/52 ; G02F1/1333
摘要:
A display sheet comprising a substrate carrying layers of material; including a polymer-dispersed cholesteric liquid-crystal layer having a first high reflection state within a portion of the visible light spectrum and a second less-reflective state in said spectrum, said states being changeable by electric field between the two states which states can be maintained in the absence of an electric field; a first transparent conductor disposed over the polymer-dispersed cholesteric liquid-crystal layer; a complementary light-absorbing layer below the polymer-dispersed cholesteric liquid-crystal layer having relatively high light absorption within the spectrum of the high-reflection state of the polymer-dispersed cholesteric liquid-crystal layer and having relatively less light absorption in the spectrum complementary to that of the high reflection state of the polymer-dispersed cholesteric liquid-crystal layer; and a reflective second conductor under said complementary light-absorbing layer reflecting light received from the complementary light-absorbing layer back through the complementary light-absorbing layer.
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