发明授权
- 专利标题: Reflection-type liquid crystal display device and fabrication process thereof
- 专利标题(中): 反射型液晶显示装置及其制造方法
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申请号: US10754417申请日: 2004-01-09
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公开(公告)号: US07072014B2公开(公告)日: 2006-07-04
- 发明人: Kunihiro Tashiro , Norio Sugiura , Katsufumi Ohmuro
- 申请人: Kunihiro Tashiro , Norio Sugiura , Katsufumi Ohmuro
- 申请人地址: JP Osaka
- 专利权人: Sharp Kabushiki Kaisha
- 当前专利权人: Sharp Kabushiki Kaisha
- 当前专利权人地址: JP Osaka
- 代理机构: Greer, Burns & Crain, Ltd.
- 优先权: JP2001-377791 20011211
- 主分类号: G02F1/13
- IPC分类号: G02F1/13
摘要:
A reflection-type liquid crystal display device, including a first substrate, a second substrate disposed so as to face the first substrate, with the second substrate carrying projections and depressions having a reflectivity, a liquid crystal layer having any of positive or negative dielectric anisotropy provided between the first and second substrates, and a polarizer disposed at an outer side of the first substrate. The device also preferably includes an optical phase compensation film disposed between the first substrate and the polarizer, with the optical phase compensation film having a negative dielectric anisotropy in a direction perpendicular to a plane of the first substrate. The optical phase compensation film also preferably has a retardation df{(nx+nz)/2−nz} so as to satisfy the relationship 0.4≦[df{(nx+ny)/2−nz}]/(dlcΔn)≦0.7, wherein nx, ny and nz are refractive indices of the optical phase compensation film respectively in an x-direction, a y-direction and a z-direction, dlc is the thickness of the liquid crystal layer, and Δn is a refractive index difference between an extraordinary ray and an ordinary ray in the liquid crystal layer.
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