# US 10,504,451 B2 · Display apparatus with multi screens and display signal control method thereof

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- Number: US 10,504,451 B2
- Document ID: US10504451B2
- Status: Granted
- Kind: B2
- Application number: 15/662,208
- Filed: 2017-07-27
- Published: 2018-02-08
- Granted: 2019-12-10
- Earliest claimed: 2016-08-08
- Assignees: Champ Vision Display Inc.
- Applicants: Champ Vision Display Inc.
- Inventors: Chin-Ku Liu; Jhong-Hao Wu; Fa-Chih Liu
- Web page: https://patentgrep.com/patent/US10504451B2

## CPC

- G09G 3/3406: {Control of illumination source (illumination devices structurally associated with liquid crystal cells G02F1/1336)}
- G02B 5/0231: {the surface having microprismatic or micropyramidal shape (macroscopic prism arrays G02B5/045)}
- G02B 5/045: {Prism arrays}
- G02F 1/13336: {Combining plural substrates to produce large-area displays, e.g. tiled displays}
- G06F 3/1446: {display composed of modules, e.g. video walls}
- G09G 3/20: for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix {no fixed position being assigned to or needed to be assigned to the individual characters or partial characters}
- G09G 2300/026: Video wall, i.e. juxtaposition of a plurality of screens to create a display screen of bigger dimensions
- G09G 2320/0626: for control of overall brightness
- G09G 2320/0686: with two or more screen areas displaying information with different brightness or colours
- G09G 2380/02: Flexible displays
- G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00)
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- 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
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)

## Abstract

Display apparatus with multi screens and corresponding display signal control method are provided. The display apparatus with multi screens includes a plurality of display screens arranged adjacent one by one and a prismatic structure optical element. At least two adjacent display screens of the plurality of display screens have an included angle between 90-180 degrees. Each display screen includes a display area and a frame surrounding the display area. The prismatic structure optical element is arranged between the two adjacent display screens with the included angle and to cover two adjacent side edges of the frames of the two adjacent display screens and a portion of the two display areas. The prismatic structure optical element includes a base and a plurality of prisms disposed on the base and arranged adjacent one by one. An extension direction of the prism is substantially parallel to the two adjacent side edges.

## Claims

### Claim 1

A display apparatus with multi screens, comprising:
a plurality of display screens arranged adjacent one by one, wherein at least two adjacent display screens of the plurality of display screens have an included angle, the included angle is greater than 90 degrees and smaller than 180 degrees, and each of the plurality of display screens comprises a display area and a frame surrounding the display area; and
a prismatic structure optical element arranged between the two adjacent display screens with the included angle and disposed to cover two adjacent side edges of the two frames of the two adjacent display screens and a portion of the two display areas in the two adjacent display screens, wherein the prismatic structure optical element comprises a base and a plurality of prisms, wherein the base has a carrying surface facing away from the two adjacent display screens, the plurality of prisms are disposed on the carrying surface and arranged adjacent one by one, and an extension direction of each of the plurality of prisms is substantially parallel to the two adjacent side edges.

### Claim 2 (depends on 1)

The display apparatus with multi screens according to claim 1, wherein the base is a film.

### Claim 3 (depends on 2)

The display apparatus with multi screens according to claim 2, further comprising:
a carrying prism disposed between the prismatic structure optical element and the two adjacent display screens corresponding to the prismatic structure optical element, wherein the carrying prism is relied on the two adjacent display screens and carries the prismatic structure optical element.

### Claim 4 (depends on 1)

The display apparatus with multi screens according to claim 1, wherein the base is a carrying prism, and the base is relied on the two adjacent display screens and carries the plurality of prisms.

### Claim 5 (depends on 1)

The display apparatus with multi screens according to claim 1, wherein each of the plurality of prisms is an isosceles triangle prism and a top angle of the isosceles triangle prism is relatively away from the base.

### Claim 6 (depends on 1)

The display apparatus with multi screens according to claim 1, wherein the base of the prismatic structure optical element comprises a first region, a second region and a third region, the third region is located between the first region and the second region and corresponding to the two adjacent side edges of the two frames of the two adjacent display screens, the first region and the second region are located corresponding to portions of the two display areas in the two adjacent display screens covered by the prismatic structure optical element, the plurality of prisms of the prismatic structure optical element comprise a plurality of first right triangle prisms disposed in the first region, a plurality of second right triangle prisms disposed in the second region and a plurality of isosceles triangle prisms disposed in the third region, each of the plurality of first right triangle prisms has a first right triangle and a first slope corresponding to the first right triangle, the first slope is tilting relative to the carrying surface and faces the third region, each of the plurality of second right triangle prisms has a second right triangle and a second slope corresponding to the second right triangle, the second slope is tilting relative to the carrying surface and faces the third region, and a top angle of each of the plurality of isosceles triangle prisms is relatively away from the base.

### Claim 7 (depends on 1)

The display apparatus with multi screens according to claim 1, wherein a quantity of the plurality of display screens is three and a quantity of the prismatic structure optical element is two.

### Claim 8 (depends on 1)

The display apparatus with multi screens according to claim 1, further comprising a control unit electrically connected to the plurality of display screens.

### Claim 9 (depends on 1)

A display signal control method for the display apparatus with multi screens claimed in claim 1, and the display signal control method comprises a step of:
enlarging a display brightness in a first portion of the display area in each one of the plurality of the display screens covered by the prismatic structure optical element relative to a display brightness in a second portion, wherein the second portion is defined as the display area excluded the first portion.

### Claim 10 (depends on 9)

The display signal control method according to claim 9, wherein the step of enlarging the display brightness in the first portion of the display area in each one of the plurality of the display screens covered by the prismatic structure optical element relative to the display brightness in the second portion is to increase the display brightness in the first portion 10%-50% greater than the display brightness in the second portion.

### Claim 11 (depends on 9)

The display signal control method according to claim 9, wherein each of the plurality of display screens comprises a non-self-luminous display panel and a backlight module configured to provide a display light source to the non-self-luminous display panel, and the step of enlarging the display brightness in the first portion of the display area in each one of the plurality of the display screens covered by the prismatic structure optical element relative to the display brightness in the second portion is to increase a brightness of the display light source corresponding to the first portion.

### Claim 12 (depends on 9)

The display signal control method according to claim 9, wherein each of the plurality of display screens comprises a non-self-luminous display panel and a backlight module configured to provide a display light source to the non-self-luminous display panel, and the step of enlarging the display brightness in the first portion of the display area in each one of the plurality of the display screens covered by the prismatic structure optical element relative to the display brightness in the second portion is to decrease a brightness of the display light source corresponding to the second portion.

### Claim 13 (depends on 9)

The display signal control method according to claim 9, wherein the step of enlarging the display brightness in the first portion of the display area in each one of the plurality of the display screens covered by the prismatic structure optical element relative to the display brightness in the second portion is to decrease a grayscale in the second portion.

### Claim 14 (depends on 9)

The display signal control method according to claim 9, wherein the step of enlarging the display brightness in the first portion of the display area in each one of the plurality of the display screens covered by the prismatic structure optical element relative to the display brightness in the second portion is to increase a grayscale in the first portion.