发明授权
- 专利标题: Liquid crystal display device and manfacturing method thereof
- 专利标题(中): 液晶显示装置及其制造方法
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申请号: US09566742申请日: 2000-05-09
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公开(公告)号: US07714975B1公开(公告)日: 2010-05-11
- 发明人: Shunpei Yamazaki , Yoshiharu Hirakata
- 申请人: Shunpei Yamazaki , Yoshiharu Hirakata
- 申请人地址: JP Atsugi-shi, Kanagawa-ken
- 专利权人: Semiconductor Energy Laboratory Co., Ltd
- 当前专利权人: Semiconductor Energy Laboratory Co., Ltd
- 当前专利权人地址: JP Atsugi-shi, Kanagawa-ken
- 代理机构: Robinson Intellectual Property Law Office, P.C.
- 代理商 Eric J. Robinson
- 优先权: JP2000-075467 20000317
- 主分类号: G02F1/1339
- IPC分类号: G02F1/1339
摘要:
An electro-optical device typified by an active matrix type liquid crystal display device, is manufactured by cutting a rubbing process, and in addition, a reduction in the manufacturing cost and an improvement in the yield are realized by reducing the number of process steps to manufacture a TFT.By forming a pixel TFT portion having a reverse stagger type n-channel TFT, and a storage capacitor, by performing three photolithography steps using three photomasks, and in addition, by having a uniform cell gap by forming wall-like spacers by performing one photolithography step, without performing a rubbing process, a multi-domain perpendicular orientation type liquid crystal display device having a wide viewing angle display, and in which a switching direction of the liquid crystal molecules is controlled, can be realized.
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