# US 10,872,554 B2 · Display screen, device and luminance compensation method for bezel border

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 10,872,554 B2
- Document ID: US10872554B2
- Status: Granted
- Kind: B2
- Application number: 16/454,219
- Filed: 2019-06-27
- Published: 2020-03-12
- Granted: 2020-12-22
- Earliest claimed: 2018-09-12
- Assignees: Beijing Boe Optoelectronics Technology Co., Ltd.; Boe Technology Group Co., Ltd.
- Applicants: Beijing Boe Optoelectronics Technology Co., Ltd.; Boe Technology Group Co., Ltd.
- Inventors: Hongliang Lv; Libao Cui; Boning Wang; Ruifeng Yang; Litao Fan; Yufei Liu; Huaxu Yang; Qingnan Al
- Web page: https://patentgrep.com/patent/US10872554B2

## CPC

- G09G 3/2074: {using sub-pixels}
- G06F 1/1601: {Constructional details related to the housing of computer displays, e.g. of CRT monitors, of flat displays (constructional details related to flat displays integrated in a portable computer, e.g. laptop, handheld computer G06F1/1637; constructional details related to television receivers H04N5/64)}
- 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}
- G06F 1/1637: {Details related to the display arrangement, including those related to the mounting of the display in the housing}
- G06F 2200/1612: Flat panel monitor
- G09G 2310/0232: Special driving of display border areas
- G09G 2320/0233: Improving the luminance or brightness uniformity across the screen
- G09G 2320/0686: with two or more screen areas displaying information with different brightness or colours
- G09G 2320/0693: Calibration of display systems
- 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)
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)

## Abstract

The present disclosure provides a display screen, a display device and a luminance compensation method. The display screen includes a window area and a bezel area; wherein the window area includes a first sub-area for actual display and a second sub-area provided around the first sub-area, the bezel area is provided in a periphery of the window area; the display screen further includes an auxiliary pixel area provided with multiple auxiliary pixels, the auxiliary pixel area covers at least the second sub-area, and the auxiliary pixels are controlled to present a same color as the bezel area when the display screen is switched on.

## Claims

### Claim 1

A display screen, comprising a window area and a bezel area;
wherein the window area comprises a first sub-area for actual display and a second sub-area provided around the first sub-area, the bezel area is provided in a periphery of the window area,
the display screen further comprises an auxiliary pixel area provided with multiple auxiliary pixels, the auxiliary pixel area covers at least the second sub-area, and the auxiliary pixels are configured to present a same color as the bezel area when the display screen is switched on,
wherein a lateral dimension of the window area is determined on the basis of a lateral dimension of the first sub-area, a dimensional tolerance of the first sub-area, and a dimensional tolerance of the window area; or a longitudinal dimension of the window area is determined on the basis of a longitudinal dimension of the first sub-area, the dimensional tolerance of the first sub-area, and the dimensional tolerance of the window area.

### Claim 2 (depends on 1)

The display screen according to claim 1, wherein the auxiliary pixels are controlled to present a same color as the first sub-area when the display screen is switched off.

### Claim 3 (depends on 1)

The display screen according to claim 1, wherein the auxiliary pixels are controlled to not perform display when the display screen is switched off.

### Claim 4 (depends on 1)

The display screen according to claim 1, wherein the auxiliary pixels are controlled to present a same color as the bezel area when the display screen is switched off.

### Claim 5 (depends on 1)

The display screen according to claim 1, wherein the auxiliary pixel area is overlapped with a part of the bezel area, and auxiliary pixels located at the overlapping position are shielded by the bezel.

### Claim 6 (depends on 5)

The display screen according to claim 5, wherein, when a n-th column of sub-pixels of the auxiliary pixel area is shielded by the bezel area, a luminance compensation is performed by a m-th column of sub-pixels adjacent to the n-th column of sub-pixels, the m-th column of sub-pixels having a same color as the n-th column of sub-pixels and is not shielded by the bezel area.

### Claim 7 (depends on 6)

The display screen according to claim 6, wherein a luminance compensation value ΔL1 of the (m+1)-th column of sub-pixels is:
ΔL=x÷a×L
wherein, x is a shielded width of the n-th column of sub-pixels, a is a width of the n-th column of sub-pixels, and L is a luminance of the m-th column of sub-pixels.

### Claim 8 (depends on 6)

The display screen according to claim 6, wherein, when a (n+1)-th column of sub-pixels and a (n+2)-th column of sub-pixels which belong to a same pixel as the n-th column of sub-pixels are completely shielded by the bezel area, a luminance compensation value ΔL1 of the (m+1)-th column of sub-pixels is: ΔL1=(1=x÷α×L1;
a luminance compensation value ΔL2 of the (m+2)-th column of sub-pixels is:
ΔL2=(1−X÷a×L2;
wherein the (m+1)-th column of sub-pixels is adjacent to the (n+1)-th column of sub-pixels, has a same color as the (n+1)-th column of sub-pixels, and is not shielded by the bezel area, the (m+2)-th column of sub-pixels is adjacent to the (n+2)-th column of sub-pixels, has a same color as the (n+2)-th column of sub-pixels, and is not shielded by the bezel area; x is a shielded width of the n-th column of sub-pixels, a is a width of the n-th column of sub-pixels, L1 is a luminance of the (m+1)-th column of sub-pixels, and L2 is a luminance of the (m+2)-th column of sub-pixels.

### Claim 9 (depends on 1)

The display screen according to claim 1, wherein,
the lateral dimension VAw of the window area is:
VAW=PW×α+TAA+TVA+k×α;
the longitudinal dimension VAH of the window area is:
VAH=PH×α+TAA+TVA+k×α;
wherein, Pw is a number of lateral pixels of the first sub-area, PH is a number of longitudinal pixels of the first sub-area, TAA is the dimensional tolerance of the first sub-area, TVA is the dimensional tolerance of the window area, α is a dimension of a single pixel in the first sub-area, and k is a preset coefficient.

### Claim 10 (depends on 1)

A display device, comprising the display screen according to claim 1.

### Claim 11 (depends on 1)

A luminance compensation method applied to the display screen according to claim 1, comprising:
detecting whether pixels in the auxiliary pixel area of the display screen are shielded by the bezel area of the display screen;
performing, when a n-th column of sub-pixels of the auxiliary pixel area is shielded by the bezel area, a luminance compensation by a m-th column of sub-pixels adjacent to the n-th column of sub-pixels, the m-th column of sub-pixels having a same color as the n-th column of sub-pixels and is not shielded by the bezel area.

### Claim 12

A display screen, comprising a window area and a bezel area;
wherein the window area comprises a first sub-area for actual display and a second sub-area provided around the first sub-area, the bezel area is provided in a periphery of the window area,
the display screen further comprises an auxiliary pixel area provided with multiple auxiliary pixels, the auxiliary pixel area covers at least the second sub-area, and the auxiliary pixels are configured to present a same color as the bezel area when the display screen is switched on,
wherein a number of lateral pixels of the auxiliary pixel area is determined on the basis of a lateral dimension of the window area, an assembly tolerance of the window area and the display screen, and a number of lateral pixels of the first sub-area; or a number of longitudinal pixels of the auxiliary pixel area is determined on the basis of a longitudinal dimension of the window area, the assembly tolerance of the window area and the display screen, and a number of longitudinal pixels of the first sub-area.

### Claim 13 (depends on 12)

The display screen according to claim 12, wherein, the number SPw of the lateral pixels of the auxiliary pixel area is:
SPW=[(VAW+TAS)÷α]−PW;
the number SPH of the longitudinal pixels of the auxiliary pixel area is:
SPH=[(VAH+TAS)÷α]−PH;
wherein, VAW is the lateral dimension of the window area, VAH is the longitudinal dimension of the window area, TAS is the assembly tolerance of the window area and the display screen, PW is the number of lateral pixels of the first sub-area, PH is the number of longitudinal pixels of the first sub-area, α is a dimension of a single pixel in the first sub-area, and is a ceiling symbol.

### Claim 14

A display screen, comprising a window area and a bezel area;
wherein the window area comprises a first sub-area for actual display and a second sub-area provided around the first sub-area, the bezel area is provided in a periphery of the window area,
the display screen further comprises an auxiliary pixel area provided with multiple auxiliary pixels, the auxiliary pixel area covers at least the second sub-area, and the auxiliary pixels are configured to present a same color as the bezel area when the display screen is switched on,
wherein the auxiliary pixel area is overlapped with a part of the bezel area, and auxiliary pixels located at the overlapping position are shielded by the bezel,
wherein the auxiliary pixel area is divided into a first region and a second region laterally opposed to each other, and a third region and a fourth region longitudinally opposed to each other;
a number of lateral pixels of each of the first region and the second region is determined on the basis of a number of lateral pixels of the auxiliary pixel area, a number of lateral pixels of the first region shielded by the bezel area, and a number of lateral pixels of the second region shielded by the bezel area; or a number of longitudinal pixels of each of the third region and the fourth region is determined on the basis of a number of longitudinal pixels of the auxiliary pixel area, a number of longitudinal pixels of the third region shielded by the bezel area, and a number of longitudinal pixels of the fourth region shielded by the bezel area.

### Claim 15 (depends on 14)

The display screen according to claim 14, wherein,
the number SPLW of the lateral pixels of the first region is:
SPLW=[(SPW−NL−NR)÷2]+NL;
the number SPRW of the lateral pixels of the second region is:
SPRW=SPW−SPLW;
the number SPUH of the longitudinal pixels of the third region is:
SPUH=[(SPH−NU−ND)÷2]+Nu;
the number SPDH of the longitudinal pixels of the fourth region is:
SPDH=SPH−SPUH;
wherein SPw is the number of the lateral pixels of the auxiliary pixel area, SPH is the number of the longitudinal pixels of the auxiliary pixel area, NL is the number of the lateral pixels of the first region shielded by the bezel area, NR is the number of the lateral pixels of the second region shielded by the bezel area, NU is the number of the longitudinal pixels of the third region shielded by the bezel area, ND is the number of the longitudinal pixels of the fourth region shielded by the bezel area, and is a rounding symbol.