发明公开
- 专利标题: A liquid crystal display device
- 专利标题(中): 液晶显示装置
-
申请号: EP02256872.9申请日: 2002-10-02
-
公开(公告)号: EP1300721A2公开(公告)日: 2003-04-09
- 发明人: Acosta, Elizabeth Jane , Tillin, Martin David , Towler, Michael John
- 申请人: SHARP KABUSHIKI KAISHA
- 申请人地址: 22-22 Nagaike-cho Abeno-ku Osaka 545-8522 JP
- 专利权人: SHARP KABUSHIKI KAISHA
- 当前专利权人: SHARP KABUSHIKI KAISHA
- 当前专利权人地址: 22-22 Nagaike-cho Abeno-ku Osaka 545-8522 JP
- 代理机构: Suckling, Andrew Michael
- 优先权: GB0123686 20011002
- 主分类号: G02F1/1337
- IPC分类号: G02F1/1337 ; G02F1/139
摘要:
A liquid crystal display device comprises a first substrate, a first alignment layer (3') disposed on a surface of the first substrate, a second substrate, second alignment layer (3) disposed on a surface of the second substrate, and a liquid crystal layer disposed between the first substrate and the second substrate.
The alignment direction of the first alignment layer (3') has a non-zero component in a first azimuthal direction (7') in a first region (20') of the alignment layer and has a non-zero component in a second azimuthal direction (41') different from the first azimuthal direction (7') in a second region (21') of the first alignment layer. In consequence, in zero applied electric field across the liquid crystal layer, a first liquid crystal state is stable in a first volume (22) of the liquid crystal layer defined by the first region (20') of the first alignment layer (3') and a second liquid crystal state topologically equivalent to a desired operating state of the device is stable in a second volume (23) of the liquid crystal layer defined by the second region (21') of the first alignment layer (3'). The second volume (23) of the liquid crystal layer acts as a nucleation region and promotes formation of the desired operating state in the first volume (22) of the active layer when an electric field is applied across the liquid crystal layer. The first volume (22) of the liquid crystal layer acts as an active region for displaying an image.
The alignment direction of the first alignment layer (3') has a non-zero component in a first azimuthal direction (7') in a first region (20') of the alignment layer and has a non-zero component in a second azimuthal direction (41') different from the first azimuthal direction (7') in a second region (21') of the first alignment layer. In consequence, in zero applied electric field across the liquid crystal layer, a first liquid crystal state is stable in a first volume (22) of the liquid crystal layer defined by the first region (20') of the first alignment layer (3') and a second liquid crystal state topologically equivalent to a desired operating state of the device is stable in a second volume (23) of the liquid crystal layer defined by the second region (21') of the first alignment layer (3'). The second volume (23) of the liquid crystal layer acts as a nucleation region and promotes formation of the desired operating state in the first volume (22) of the active layer when an electric field is applied across the liquid crystal layer. The first volume (22) of the liquid crystal layer acts as an active region for displaying an image.
公开/授权文献
- EP1300721A3 A liquid crystal display device 公开/授权日:2004-09-08
信息查询
IPC分类: