Alignment layer and liquid crystal display including the same
AssigneeSamsung Display Co., Ltd.
InventorHo LIM
Life of this patent
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Abstract
The present invention provides an alignment layer including a backbone including a polyolefin-based compound, and a plurality of side chains including a vertical functional group and a reactive mesogen (RM) and connected to the backbone, the backbone and the plurality of side chains include a compound represented by the following Chemical Formula 1, and a liquid crystal display including the alignment layer. According to the present invention, the alignment layer may have improved mechanical properties and afterimage by including a polyolefin-based compound as a backbone. Wherein X, Y, Z, Ak, Ar, Ra, and a, b, c, d and e are defined as in the specification.
Claims13
An alignment layer comprising:
- a backbone including a polyolefin-based compound, and a plurality of side chains connected to the backbone, wherein
- the backbone and the plurality of side chains comprise a compound represented by the following Chemical Formula 1:
- in Chemical Formula 1, X independently comprises at least one of H and —CH3, Y independently comprises at least one of
- O, and
- Z independently comprises at least one of OH, O,
- OCH3, and O(CH)nCH3, AK independently comprises at least one of (CH2)nO,
- and (CH2)nCH3, Ar independently comprises at least one of
- Ra independently comprises at least one of
- n is 0 to 20, and q is 1 to 4, and a, b, c, d and e represent a component ratio of repeating units respectively, and have a value of 0 to 100% respectively, the sum of the component ratio of a, b, c, d and e is 100%.
A liquid crystal display comprising:
- a first substrate,
- a second substrate facing the first substrate;
- a pixel electrode positioned on the first substrate;
- a common electrode positioned on the first substrate or the second substrate;
- a first alignment layer positioned on the first substrate;
- a second alignment layer positioned on the second substrate;
- and
- a liquid crystal layer positioned between the first substrate and the second substrate, wherein
- at least one of the first alignment layer and the second alignment layer comprises an alignment polymer, and the alignment polymer is formed from an alignment agent including a backbone including a polyolefin-based compound and side chains connected to the backbone, wherein
- the side chains comprise a vertical functional group and a reactive mesogen (RM);
- and
- the alignment agent comprises a compound represented by the following Chemical Formula 1:
- in Chemical Formula 1, X independently comprises at least one of H and —CH3, Y independently comprises at least one of
- O, and
- Z independently comprises at least one of OH, O,
- OCH3, and O(CH)nCH3, AK independently comprises at least one of (CH2)nO,
- and (CH2)nCH3, Ar independently comprises at least one of
- Ra independently comprises at least one of
- n is 0 to 20, and q is 1 to 4, and a, b, c, d and e represent a component ratio of repeating units respectively, and have a value of 0 to 100% respectively, the sum of the component ratio of a, b, c, d and e is 100%.
Dependencies are inferred from the claim text.