Invention Application
- Patent Title: LIQUID CRYSTAL DISPLAY DEVICE
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Application No.: US14879345Application Date: 2015-10-09
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Publication No.: US20160033825A1Publication Date: 2016-02-04
- Inventor: Chikae MATSUI , Noboru Kunimatsu , Hidehiro SONODA
- Applicant: JAPAN DISPLAY INC. , PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
- Priority: JP2008-235900 20080916
- Main IPC: G02F1/1337
- IPC: G02F1/1337 ; C09K19/56 ; G02F1/1343

Abstract:
An alignment film is given a 2-layer structure comprising a photoalignment film that is photoalignable and a low-resistivity alignment film whose resistivity is smaller than that of the photoalignment film. The photoalignment film is formed by a polyimide whose precursor is polyamide acid alkyl ester, the number molecular weight of the photoalignment film is large, and the stability of alignment of the photoalignment film by photoalignment is excellent. The low-resistivity alignment film is formed by a polyimide whose precursor is polyamide acid, the number molecular weight of the low-resistivity alignment film is small, and the resistivity of the low-resistivity alignment film is small. The 2-layer structure alignment film can be maintaining an excellent photoalignment characteristic, so DC afterimages can be controlled.
Public/Granted literature
- US10168579B2 Liquid crystal display device Public/Granted day:2019-01-01
Information query
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