Liquid crystal aligning agent for photoalignment, liquid crystal alignment film and liquid crystal display device using it, and diamine and polymer
US10968392B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | Oct 30, 2018 |
| Grant date | Apr 6, 2021 |
| Priority date | — |
| Expiry date | Mar 1, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133761
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Provided are a liquid crystal alignment film capable of being given anisotropy through photoalignment and stable to light, and a liquid crystal display device capable of keeping a high voltage holding ratio without degradation of display quality even when exposed to strong light for a long period of time. To provide these, used is a liquid crystal aligning agent for photoalignment which contains a polymer having a structural unit containing a photoreactive structure and in which the structural unit containing a photoreactive structure undergoes chemical reaction by heating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.