Alignment material composition and alignment layer
AssigneeAu Optronics Corporation
InventorsYi-Hau Shiau, Suo-Chun Hsu, Hsin-An Cheng, Yang-Chu Lin, Liang-Ying Huang, Tai-Hsiang Huang
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Abstract
An alignment material composition including an alignment material, an ultraviolet absorbent, a light stabilizer and a solvent is provided. The ultraviolet absorbent has a formula 1 shown as below: wherein X represents hydrogen, alkyl group or halogen while R1 represents benzene ring carbon long-chain derivative. The light stabilizer has a formula 2 shown as below: wherein R2 represents ester-based derivative or amine-based derivative, R3 represents hydrogen, hydroxyl group (—OH) or alkyl group.
Claims11
An alignment material composition, comprising:
- an alignment material;
- an ultraviolet absorbent, wherein the ultraviolet absorbent comprises a following formula
- 1-1 or a following formula 1-2:
- wherein X represents hydrogen, alkyl group or halogen, and R1 represents benzene ring carbon long-chain derivative;
- a light stabilizer is selected from at least one of following compounds:
- and a solvent,
- wherein the alignment material comprises polyamide acid composition, and wherein a content of the alignment material is 2 to 7 wt %, a content of the ultraviolet absorbent is 0.2 to 2.0 wt %, and a content of the light stabilizer is 0.2 to 2.0 wt %.
An alignment layer, suitable for being used in a liquid crystal display panel comprising a liquid crystal layer, constituents of the alignment layer comprising an alignment material, an ultraviolet absorbent and a light stabilizer, wherein the ultraviolet absorbent comprises a following formula 1-1 or a following formula 1-2:
- wherein X represents hydrogen, alkyl group or halogen, and R1 represents benzene ring carbon long-chain derivative;
- the light stabilizer is selected from at least one of following compounds:
- wherein the alignment material comprises polyamide acid composition, and a weight ratio of the alignment material to the ultraviolet absorbent to the light stabilizer is 2-7:0.2-2.0:0.2-2.0, and
- wherein the alignment layer contacts with the liquid crystal layer so as to align the liquid crystal layer.
Dependencies are inferred from the claim text.