发明申请
- 专利标题: Television set using liquid crystal display apparatus having improved viewing angle
- 专利标题(中): 使用具有改善的视角的液晶显示装置的电视机
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申请号: US12009928申请日: 2008-01-23
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公开(公告)号: US20080180604A1公开(公告)日: 2008-07-31
- 发明人: Kazuhiko Ohsawa , Tetsushi Yoshida
- 申请人: Kazuhiko Ohsawa , Tetsushi Yoshida
- 申请人地址: JP Tokyo
- 专利权人: Casio Computer Co., Ltd.
- 当前专利权人: Casio Computer Co., Ltd.
- 当前专利权人地址: JP Tokyo
- 优先权: JP2007-016655 20070126; JP2007-125782 20070510; JP2008-008077 20080117
- 主分类号: G02F1/1335
- IPC分类号: G02F1/1335 ; H04N3/00 ; H04N5/455
摘要:
A broadcasting receiving apparatus includes a liquid crystal display device including a liquid crystal cell in which a liquid crystal layer that is twist-aligned at 90° and sandwiched between a pair of substrates, first and second polarizing layers arranged to sandwich the cell therebetween so that their absorption axes are set in parallel with directions crossing aligning treatment directions of the substrates at 45°, and viewing angle compensating plates respectively arranged between the polarizing layers and the cell. A total value of retardations in a thickness direction, defined as a value of a product of a phase difference within a plane perpendicular to substrate surfaces of the cell and a layer thickness, of optical layers present between the polarizing layers is set to a value that substantially cancels out a retardation in a liquid crystal layer thickness direction when a saturation voltage is applied to the liquid crystal layer.
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