# US 2018/0024282 A1 · Light control plate, dual-view display panel and display device

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- Number: US 2018/0024282 A1
- Document ID: US20180024282A1
- Status: Published application
- Kind: A1
- Application number: 15/656,285
- Filed: 2017-07-21
- Published: 2018-01-25
- Earliest claimed: 2016-07-21
- Assignees: Boe Technology Group Co., Ltd.; Hefei Xinsheng Optoelectronics Technology Co., Ltd.
- Applicants: Boe Technology Group Co., Ltd.; Hefei Xinsheng Optoelectronics Technology Co., Ltd
- Inventors: Yongcan WANG; Shuishui ZHANG; Quan GAN
- Web page: https://patentgrep.com/patent/US20180024282A1

## CPC

- G02F 1/1323: {Arrangements for providing a switchable viewing angle}
- G02B 5/045: {Prism arrays}
- G02B 30/36: using refractive optical elements, e.g. prisms, in the optical path between the images and the observer
- G02F 1/133524: {Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides}
- G02F 1/1335: Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F 2201/30: grating
- H10K 59/879: {comprising refractive means, e.g. lenses}
- H10K 2102/3023: {Direction of light emission}
- 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
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

The invention relates to a light control plate, a dual-view display panel and a display device. The light control plate comprises: a substrate; a grating structure which is arranged above the substrate and has light-transmitting regions and light-blocking regions arranged alternately; and an optical device which is arranged on a boundary of adjacent light-transmitting region and light-blocking region and used for expanding a dual-view visual angle formed by the grating structure.

## Claims

### Claim 1

A light control plate, comprising:
a substrate;
a grating structure, which is arranged above the substrate and has light-transmitting regions and light-blocking regions arranged alternately; and
an optical device, which is arranged on a boundary of adjacent light-transmitting region and light-blocking region and used for expanding a dual-view visual angle formed by the grating structure.

### Claim 2 (depends on 1)

The light control plate according to claim 1, wherein the optical device is a triangular prism, which is arranged in the light-transmitting region and extends to at least partially cover the boundary of the light-transmitting region and the light-blocking region.

### Claim 3 (depends on 2)

The light control plate according to claim 2, wherein the optical device is an isosceles triangular prism, and a center line of a vertex angle of the isosceles triangular prism coincides with a center line of the light-transmitting region in a column direction.

### Claim 4 (depends on 3)

The light control plate according to claim 3, wherein a plurality of isosceles triangular prisms are arranged in the form of an array.

### Claim 5 (depends on 1)

The light control plate according to claim 1, wherein a refractivity of the optical device is larger than that of the substrate.

### Claim 6 (depends on 1)

The light control plate according to claim 1, wherein the optical device is formed from a resin material.

### Claim 7 (depends on 1)

A dual-view display panel, comprising a display screen having a plurality of pixel regions, and a light control plate arranged on a display side of the display screen,
wherein the light control plate comprises the light control plate according to claim 1, and
the optical device of the light control plate corresponds to two adjacent pixel regions of the display screen.

### Claim 8 (depends on 7)

The dual-view display panel according to claim 7, wherein a black matrix is arranged between two adjacent pixel regions of the display screen, and a center line of the light-transmitting region of the grating structure of the light control plate in a column direction coincides with a center line of the black matrix in the column direction.

### Claim 9 (depends on 8)

The dual-view display panel according to claim 8, wherein a width of the optical device of the light control plate in a row direction is smaller than a width of one of the two pixel regions corresponding to the optical device in the row direction.

### Claim 10 (depends on 7)

The dual-view display panel according to claim 7, wherein the display screen is a liquid crystal display screen or an organic light emission display screen.

### Claim 11 (depends on 7)

A display device, comprising the dual-view display panel according to claim 7.

### Claim 12 (depends on 11)

The display device according to claim 11, wherein a black matrix is arranged between two adjacent pixel regions of the display screen of the dual-view display panel, and a center line of the light-transmitting region of the grating structure of the light control plate in a column direction coincides with a center line of the black matrix in the column direction.

### Claim 13 (depends on 12)

The display device according to claim 12, wherein a width of the optical device of the light control plate of the dual-view display panel in a row direction is smaller than a width of one of the two pixel regions corresponding to the optical device in the row direction.

### Claim 14 (depends on 11)

The display device according to claim 11, wherein the display screen of the dual-view display panel is a liquid crystal display screen or an organic light emission display screen.