# US 2012/0075567 A1 · Liquid crystal display and method of manufacturing the same

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- Number: US 2012/0075567 A1
- Document ID: US20120075567A1
- Status: Published application
- Kind: A1
- Application number: 13/241,656
- Filed: 2011-09-23
- Published: 2012-03-29
- Earliest claimed: 2001-08-31
- Assignees: Sharp Kabushiki Kaisha
- Inventors: Takahiro Sasaki; Kazutaka Hanaoka; Tsutomu Seino; Yohei Nakanishi; Seiji Tanuma; Kimiaki Nakamura; Yuichi Inoue; Masakazu Shibasaki; Hideaki Tsuda; Yoshio Koike; Yasutoshi Tasaka; Hidefumi Yoshida; Kunihiro Tashiro
- Web page: https://patentgrep.com/patent/US20120075567A1

## CPC

- G02F 1/133788: {by light irradiation, e.g. linearly polarised light photo-polymerisation}
- G02F 1/133707: {Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes}
- G02F 1/134363: {for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]}
- G02F 1/1362: Active matrix addressed cells {(G02F1/134336, G02F1/134363 take precedence)}
- G02F 1/1393: {the birefringence of the liquid crystal being electrically controlled, e.g. ECB-, DAP-, HAN-, PI-LC cells (G02F1/1396, G02F1/141 take precedence)}
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS

## Abstract

A liquid crystal display in which a wide angle of view is obtained and a response time at a halftone can be shortened by regulating an alignment orientation of a liquid crystal by the use of a polymer fixation system in which a liquid crystal layer containing a polymerizable component is scaled between substrates. The polymerizable component is polymerized while a voltage is applied to the liquid crystal layer to fix a liquid crystal alignment. A plurality of stripe-like electrode patterns, in which a pattern width is formed to be wider than a width of a space, are arranged so that the liquid crystal molecules are aligned in a longitudinal direction of the pattern when the polymer is formed by solidifying a polymerizable component mixed in the liquid crystal layer while a voltage is applied to the liquid crystal layer.

## Claims

### Claim at position 1

1-5. (canceled)

### Claim 6

A liquid crystal display comprising:
a pair of substrates;
electrodes and spaces formed on one of the pair of substrates;
polymer material and liquid crystal between the pair of substrates; and
polymer alignment films which are formed on each of the substrates and are affected by light irradiation and cause alignment of the liquid crystal in predetermined directions.

### Claim 7 (depends on 6)

The liquid crystal display according to claim 6, wherein the polymer material is formed by irradiating an ultraviolet ray to a polymerization monomer.

### Claim 8 (depends on 7)

The liquid crystal display according to claim 7, wherein the polymerization monomer is bifunctional acrylate or a mixture of bifunctional acrylate and monofunctional acrylate.

### Claim 9 (depends on 6)

The liquid crystal display according to claim 6, wherein widths of the electrodes and the spaces are 0.5 um to 5 um.

### Claim 10 (depends on 6)

The liquid crystal display according to claim 6, wherein a display mode of the liquid crystal display is an In-Plane-Switching mode.

### Claim 11 (depends on 6)

The liquid crystal display according to claim 6, wherein at least a portion of the electrodes is formed in a stripe shape; and
the portion is arranged in parallel with the spaces.

### Claim 12 (depends on 6)

The liquid crystal display according to claim 6, wherein one of the substrates is an array substrate and the array substrate has a color filter.

### Claim 13 (depends on 6)

The liquid crystal display according to claim 6, wherein a circular polarization plate is attached to each of the substrates.

### Claim 14

A method of manufacturing a liquid crystal display, comprising the steps of:
forming stripe-like electrodes and spaces on one of a pair of substrates;
forming alignment films on each of the substrates;
performing an optical alignment processing to the alignment films;
sealing a liquid crystal composite in which a polymerization monomer is mixed in a liquid crystal between the pair of substrates; and
polymerizing the polymerization monomer by light without applying a voltage to the liquid crystal composite.

### Claim 15 (depends on 14)

The method of manufacturing a liquid crystal display according to claim 14, wherein the polymerization monomer is bifunctional acrylate or a mixture of bifunctional acrylate and monofunctional acrylate.

### Claim 16 (depends on 14)

The method of manufacturing a liquid crystal display according to claim 14, further comprising the step of:
forming a color filter on the substrate having the stripe-like electrodes and the spaces.