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US 8,263,799 B2Granted
Chiral binaphthyl compounds
AssigneeIndustrial Technology Research Institute
InventorsJian-Wen Lin, Chun-Ming Wu, Shih-Hsien Liu, Kung-Lung Cheng
Life of this patent
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Abstract
The present invention relates to chiral binaphthyl compounds having good solubility and high helical twisting power. The chiral binaphthyl compounds as dopants in the liquid crystal compositions can help enhance the display quality of the liquid crystal panels.
Claims4
A chiral binaphthyl compound selected from the following group consisting of
- wherein R is a straight-chained or branched C1-C30 alkyl group of which one or more CH2 is optionally substituted with —O—, —S—, —NH—, —N(CH3)—, —CO—, —CO—O—, —O—CO—, —CH═CH— or —C≡C—, or the above-mentioned alkyl group being selectively substituted with —F, —Cl, —Br, —NCS, —CN, or —OCF3.
A chiral binaphthyl compound selected from the following group consisting of
- wherein R is a straight-chained or branched C1˜C30 alkyl group of which one or more —CH2— is optionally substituted with —O—, —S—, —NH—, —N(CH3)—, —CO—, —CO—O—, —O—CO—, —CH═CH— or —C≡C—, or the above-mentioned alkyl group being selectively substituted with —F, —Cl, —Br, —NCS, —CN, or —OCF3.
Dependencies are inferred from the claim text.