# US 8,786,808 B2 · Liquid crystal display and method of manufacturing the same

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- Number: US 8,786,808 B2
- Document ID: US8786808B2
- Status: Granted
- Kind: B2
- Application number: 13/241,656
- Filed: 2011-09-23
- Published: 2012-03-29
- Granted: 2014-07-22
- Earliest claimed: 2001-08-31
- Assignees: Sharp Kabushiki Kaisha
- Applicants: 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
- 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/US8786808B2

## 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 including a pair of substrates; a plurality of electrodes formed in a matrix on one of the pair of substrates, wherein each of the plurality of electrodes includes a plurality of stripe-like portions that define a plurality of spaces therebetween; 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. The plurality of stripe-like portions extend in at least two different directions which are not parallel to each other.

## Claims

### Claim 1

A liquid crystal display comprising:
a pair of substrates;
a plurality of electrodes formed in a matrix on one of the pair of substrates, wherein each of the plurality of electrodes includes a plurality of stripe-like portions that define a plurality of spaces therebetween;
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;
wherein the plurality of stripe-like portions extend in at least two different directions which are not parallel to each other, and
wherein a width of the stripe-like portion is substantially the same as a width of the space.

### Claim 2 (depends on 1)

The liquid crystal display according to claim 1, wherein the polymer material is formed by irradiating an ultraviolet ray to a polymerization monomer.

### Claim 3 (depends on 2)

The liquid crystal display according to claim 2, wherein the polymerization monomer is bifunctional acrylate or a mixture of bifunctional acrylate and monofunctional acrylate.

### Claim 4 (depends on 1)

The liquid crystal display according to claim 1, wherein widths of the electrodes and the spaces are 0.5 um to 5 um.

### Claim 5 (depends on 1)

The liquid crystal display according to claim 1, wherein a display mode of the liquid crystal display is an In-Plane-Switching mode.

### Claim 6 (depends on 1)

The liquid crystal display according to claim 1, wherein one of the substrates is an array substrate and the array substrate has a color filter.

### Claim 7 (depends on 1)

The liquid crystal display according to claim 1, wherein a circular polarization plate is attached to each of the substrates.

### Claim 8

A liquid crystal display comprising:
a pair of substrates;
a plurality of electrodes formed in a matrix on one of the pair of substrates, wherein each of the plurality of electrodes includes a plurality of stripe-like portions that define a plurality of spaces therebetween;
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;
wherein the plurality of stripe-like portions extend in at least two different directions which are not parallel to each other, and
wherein a width of the stripe-like portion is larger than a width of the space.

### Claim 9 (depends on 8)

The liquid crystal display according to claim 8, wherein the polymer material is formed by irradiating an ultraviolet ray to a polymerization monomer.

### Claim 10 (depends on 9)

The liquid crystal display according to claim 9, wherein the polymerization monomer is bifunctional acrylate or a mixture of bifunctional acrylate and monofunctional acrylate.

### Claim 11 (depends on 8)

The liquid crystal display according to claim 8, wherein widths of the electrodes and the spaces are 0.5 um to 5 um.

### Claim 12 (depends on 8)

The liquid crystal display according to claim 8, wherein a display mode of the liquid crystal display is an In-Plane-Switching mode.

### Claim 13 (depends on 8)

The liquid crystal display according to claim 8, wherein one of the substrates is an array substrate and the array substrate has a color filter.

### Claim 14 (depends on 8)

The liquid crystal display according to claim 8, wherein a circular polarization plate is attached to each of the substrates.
