Liquid crystal aligning agent, liquid crystal aligning films, and liquid crystal display devices
US7105211B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 2003 |
| Grant date | Sep 12, 2006 |
| Priority date | — |
| Expiry date | May 20, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31721
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A liquid crystal alignment treating agent for optical alignment treatment, whereby it is possible to obtain a liquid crystal alignment film which presents a high and stable tilt angle of liquid crystal and which is excellent in an accumulated charge property by a DC voltage, is provided.A liquid crystal alignment treating agent which comprises, as resin components, a polyimide precursor or a polyimide obtained by cyclodehydration of the polyimide precursor, and an acryl polymer having repeating units represented by the formula (II):(wherein R3 represents a hydrogen atom, a methyl group or a halogen atom, R4 represents an alkyl group having at least 8 carbon atoms, and k represents a positive represented by the formula (III):(wherein R3 and R5 each independently represents a hydrogen atom, a methyl group or a halogen atom, R4 represents an alkyl group having at least 8 carbon atoms, R6 represents an organic group having an epoxy group, and k and j each represents a positive integer), wherein the acryl polymer having the repeating units represented by the formula (II) or the formula (III) is from 0.01 to 30 wt % based on the whole resin components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.