Invention Grant
- Patent Title: Liquid crystal display device
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Application No.: US16704538Application Date: 2019-12-05
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Publication No.: US11156875B2Publication Date: 2021-10-26
- Inventor: Noboru Kunimatsu , Chikae Matsui , Hidehiro Sonoda , Yuko Matsumoto , Shoichi Uchino , Masaki Matsumori , Yasushi Tomioka
- Applicant: Japan Display Inc. , Panasonic Liquid Crystal Display Co., Ltd.
- Applicant Address: JP Tokyo; JP Himeji
- Assignee: Japan Display Inc.,Panasonic Liquid Crystal Display Co., Ltd.
- Current Assignee: Japan Display Inc.,Panasonic Liquid Crystal Display Co., Ltd.
- Current Assignee Address: JP Tokyo; JP Himeji
- Agency: Michael Best & Friedrich LLP
- Priority: JPJP2010-032443 20100217
- Main IPC: G02F1/1337
- IPC: G02F1/1337 ; G02F1/1343 ; G02F1/1368 ; H01L27/12 ; C09K19/56

Abstract:
A liquid crystal display device includes a TFT substrate having a first alignment film and an opposing substrate having a second alignment film with liquid crystals sandwiched therebetween. One of the first and second alignment films, comprises a first polyimide produced via polyamide acid ester containing cyclobutane as a precursor and a second polyimide produced via polyamide acid as a precursor. The polyamide acid has a higher polarity than that of the polyamide acid ester. The one of the first and second alignment films is responsive to photo-alignment. A first side of the one of the first and second alignment films is adjacent to the liquid crystals, and a second side thereof is closer to one of the TFT substrate and the counter substrate than the first side. The first side contains more of the first polyimide and less of the second polyimide than the second side.
Information query
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