Liquid crystal display and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-9366910-B2
Application number	US-201013145077-A
Country	US
Kind code	B2
Filing date	Jan 22, 2010
Priority date	Jan 30, 2009
Publication date	Jun 14, 2016
Grant date	Jun 14, 2016

Abstract

A method of manufacturing a liquid crystal display element capable of easily improving response characteristics without using a large apparatus is provided. After alignment films 22 and 32 made of a polymer compound including a crosslinkable functional group as a side chain and a bulky skeleton such as an adamantane skeleton are formed in a TFT substrate 20 and a CF substrate 30 , the alignment films 22 and 32 are arranged to face each other, and a liquid crystal layer 40 including liquid crystal molecules 41 is sealed between the alignment films 22 and 32 , and then, in a state where the liquid crystal molecules 41 are aligned to allow long-axis directions thereof to be oblique with respect to a substrate surface, the polymer compound in the alignment films 22 and 32 is reacted to form a polymer compound including a cross-linked structure, and predetermined pretilts are provided to liquid crystal molecules 41 A and 41 B placed in proximity to the alignment films 22 and 32 , respectively.

First claim

The invention claimed is:

1. A liquid crystal display comprising:
a pair of substrates with facing surfaces;
a pair of alignment films arranged on the facing surfaces of the pair of substrates;
a liquid crystal layer including liquid crystal molecules arranged between the pair of alignment films,
wherein,
one or both of the pair of alignment films includes a compound including a polymer compound with a cross-linked side chain, the polymer compound including (i) a crosslinkable functional group as a side chain and (ii) at least one of a skeleton represented by expressions (1), (2), (3), (5), (6), (7), (8), or (9) in a main chain,
the compound with the cross-linked side chain provides a pretilt to the liquid crystal molecules in the liquid crystal layer, and
expressions (1), (2), (3), (5), (6), (7), (8), and (9) are:

2. The liquid crystal display according to claim 1 , wherein the pair of alignment films have the same composition.

3. The liquid crystal display according to claim 1 , wherein the main chain includes an imide bond in a repeating unit.

4. The liquid crystal display according to claim 1 wherein the film density of one of the pair of alignment films is 1.30 g/cm 3 or less.

5. The liquid crystal display according to claim 1 , wherein the compound includes a structure aligning liquid crystal molecules in a predetermined direction with respect to the pair of substrates.

6. The liquid crystal display according to claim 1 , wherein the pair of substrates are configured of a substrate including a pixel electrode and a substrate including a facing electrode, and liquid crystal molecules have negative dielectric anisotropy.

7. The liquid crystal display according to claim 1 , wherein in one or both of the pair of substrates, an electrode having a slit or a projection is provided on the liquid crystal layer side.

Assignees

• Suwa Shunichi
• Inoue Yuichi
• Ogawa Ryo
• Kamada Tsuyoshi
• Miyakawa Masashi
• Isozaki Tadaaki
• Nakamura Masahiko
• Sony Corp

Inventors

• Suwa Shunichi
• Inoue Yuichi
• Ogawa Ryo
• Kamada Tsuyoshi
• Miyakawa Masashi
• Isozaki Tadaaki
• Nakamura Masahiko

Classifications

• G02F2001/13712

  Physics · mapped topic

• Y10T428/10

  Cross-Sectional Technologies · mapped topic

• G02F1/133788 Primary

  by light irradiation, e.g. linearly polarised light photo-polymerisation · CPC title

• G02F1/133707

  Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes · CPC title

• Y10T428/1023

  Cross-Sectional Technologies · mapped topic