# US 12,216,957 B2 · Tiled display device

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

- Number: US 12,216,957 B2
- Document ID: US12216957B2
- Status: Granted
- Kind: B2
- Application number: 17/964,417
- Filed: 2022-10-12
- Published: 2023-08-24
- Granted: 2025-02-04
- Earliest claimed: 2022-02-24
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., LTD.
- Inventors: So Young Kwon
- Web page: https://patentgrep.com/patent/US12216957B2

## CPC

- G06F 3/1446: {display composed of modules, e.g. video walls}
- G09G 3/32: semiconductive, e.g. using light-emitting diodes [LED]
- G09G 5/10: Intensity circuits
- G09G 2300/026: Video wall, i.e. juxtaposition of a plurality of screens to create a display screen of bigger dimensions
- G09G 2320/0233: Improving the luminance or brightness uniformity across the screen
- 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 2356/00: Detection of the display position w.r.t. other display screens
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- 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)

## Abstract

A tiled display device comprises a first display device and a second display device, each including a display area including pixels and a non-display area adjacent to the display area, a coupling area disposed between the first display device and the second display device, a viewing distance detector detecting a viewing distance between the tiled display device and a user, and a luminance compensator compensating luminance of the pixels adjacent to the coupling area based on a size of the coupling area and the viewing distance.

## Claims

### Claim 1

A tiled display device comprising:
a first display device and a second display device, the first display device and the second display device each including a display area including pixels and a non-display area adjacent to the display area;
a coupling area disposed between the first display device and the second display device;
a viewing distance detector detecting a viewing distance between the tiled display device and a user; and
a luminance compensator that compensates luminance of the pixels adjacent to the coupling area based on a size of the coupling area and the viewing distance, wherein
the luminance compensator calculates a visibility index based on the size of the coupling area and the viewing distance, and
the luminance compensator determines a luminance compensation amount for optimizing the visibility index relative to a reference index at which the coupling area is not recognized by the user,
in case that the luminance compensation amount has a specific value, the luminance compensator calculates a visibility index that changes depending on the viewing distance,
the luminance compensator determines a range of the viewing distance in which the visibility index satisfies the reference index, the luminance compensator determines the luminance compensation amount based on a selection of the user within the range of the viewing distance in which the visibility index satisfies the reference index, and
the luminance compensator increases a number of the pixels of which the luminance is to be compensated in case that a luminance compensation amount increases.

### Claim 2 (depends on 1)

The tiled display device of claim 1, wherein
the size of the coupling area is determined by comparing a coupling pitch and a pixel pitch,
the coupling pitch is a pitch between a pixel of the first display device adjacent to the coupling area and a pixel of the second display device adjacent to the coupling area, and
the pixel pitch is a pitch between adjacent ones of the pixels in the second display device.

### Claim 3 (depends on 2)

The tiled display device of claim 2, wherein
an increment in a luminance compensation amount of the pixels adjacent to the coupling area is determined based on a difference between the coupling pitch and the pixel pitch in case that the coupling pitch is greater than the pixel pitch, and
a decrement in the luminance compensation amount of the pixels adjacent to the coupling area is determined based on a difference between the pixel pitch and the coupling pitch in case that the coupling pitch is smaller than the pixel pitch.

### Claim 4 (depends on 2)

The tiled display device of claim 2, wherein the luminance compensator does not compensate the pixels adjacent to the coupling area in case that the coupling pitch and the pixel pitch are substantially equal to each other.

### Claim 5 (depends on 1)

The tiled display device of claim 1, wherein the viewing distance detector detects the viewing distance by performing a foveated rendering based on a position of the user.

### Claim 6

A tiled display device comprising: a first display device and a second display device, each including a display area including pixels and a non-display area adjacent to the display area; a coupling area disposed between the first display device and the second display device; a viewing distance detector detecting a viewing distance between the tiled display device and a user; an illuminance detector detecting illuminance of the coupling area; and a luminance compensator that compensates luminance of the pixels adjacent to the coupling area based on a size of the coupling area, the viewing distance, and the illuminance, wherein the luminance compensator calculates a visibility index based on the size of the coupling area, the viewing distance, and the illuminance, the luminance compensator determines a luminance compensation amount for optimizing the visibility index relative to a reference index at which the coupling area is not recognized by the user, in case that each of the luminance compensation amount and the illuminance has a specific value, the luminance compensator calculates a visibility index that changes depending on the viewing distance, the luminance compensator determines a range of the viewing distance in which the visibility index satisfies the reference index, the size of the coupling area is determined by comparing a coupling pitch and a pixel pitch, the coupling pitch is a pitch between a pixel of the first display device adjacent to the coupling area and a pixel of the second display device adjacent to the coupling area, the pixel pitch is a pitch between adjacent ones of the pixels in the second display device, an increment in a luminance compensation amount of the pixels adjacent to the coupling area is determined based on a difference between the coupling pitch and the pixel pitch in case that the coupling pitch is greater than the pixel pitch, a decrement in the luminance compensation amount of the pixels adjacent to the coupling area is determined based on a difference between the pixel pitch and the coupling pitch in case that the coupling pitch is smaller than the pixel pitch, and the luminance compensator does not compensate the pixels adjacent to the coupling area in case that the coupling pitch and the pixel pitch are substantially equal to each other.

### Claim 7 (depends on 6)

The tiled display device of claim 6, wherein the luminance compensator determines the luminance compensation amount based on a selection of the user within the range of the viewing distance in which the visibility index satisfies the reference index.

### Claim 8 (depends on 6)

The tiled display device of claim 6, wherein the luminance compensator decreases a luminance compensation amount of the pixels adjacent to the coupling area in case that the illuminance increases.

### Claim 9 (depends on 6)

The tiled display device of claim 6, wherein the luminance compensator compensates the luminance of the pixels adjacent to the coupling area based on the size of the coupling area and the viewing distance in case that the illuminance is equal to or less than a level.

### Claim 10 (depends on 6)

The tiled display device of claim 6, wherein the luminance compensator increases a number of the pixels of which the luminance is to be compensated in case that a luminance compensation amount increases.

### Claim 11 (depends on 6)

The tiled display device of claim 6, wherein the viewing distance detector detects the viewing distance by performing a foveated rendering based on a position of the user.