# US 10,482,830 B2 · Display apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,482,830 B2 - Document ID: US10482830B2 - Status: Granted - Kind: B2 - Application number: 15/808,499 - Filed: 2017-11-09 - Published: 2018-05-10 - Granted: 2019-11-19 - Earliest claimed: 2016-11-09 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Inhyuk Choi - Web page: https://patentgrep.com/patent/US10482830B2 ## CPC - G09G 3/342: {using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines} - G02F 1/13336: {Combining plural substrates to produce large-area displays, e.g. tiled displays} - G02F 1/133385: {with cooling means, e.g. fans} - G02F 1/133602: {Direct backlight} - G02F 1/133603: {with LEDs} - G02F 1/133606: {including a specially adapted diffusing, scattering or light controlling members} - G02F 1/133608: {including particular frames or supporting means} - G02F 1/133611: {including means for improving the brightness uniformity} - G06F 3/1446: {display composed of modules, e.g. video walls} - G09G 3/3426: {the different display panel areas being distributed in two dimensions, e.g. matrix} - G02F 1/133601: {for spatial active dimming} - G09G 3/3674: {Details of drivers for scan electrodes} - G09G 3/3685: {Details of drivers for data electrodes} - G09G 2300/026: Video wall, i.e. juxtaposition of a plurality of screens to create a display screen of bigger dimensions - G09G 2310/0232: Special driving of display border areas - G09G 2320/0233: Improving the luminance or brightness uniformity across the screen - G09G 2320/0626: for control of overall brightness - 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) - 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 The present invention relates to a display apparatus. According to an embodiment of the present invention, the display apparatus comprises a plurality of displays adjacently arranged, wherein each of the plurality of displays comprises a panel, a bezel surrounding the panel, and a plurality of light sources disposed on a circuit board and configured to output light to the panel, wherein the plurality of light sources comprises a first light source disposed at a first area of the circuit board the bezel and a second light source disposed at a second area of the circuit board, wherein the first area is adjacent to the bezel, and wherein a first current is provided to the first light source and a second current is provided to the second light source and the second current is smaller than the first current. Thereby, decrease in brightness in areas near the bezel can be compensated for, and uniform brightness can be implemented throughout the displays. ## Claims ### Claim 1 A display apparatus comprising: a plurality of displays adjacently arranged, wherein each of the plurality of displays comprises: a panel; a bezel surrounding the panel; a plurality of light sources disposed on a circuit board and configured to output light to the panel; a guide panel disposed at a side of the circuit board; and a diffusion sheet supported by the guide panel and disposed over the plurality of light sources, wherein the panel is disposed over the diffusion sheet, wherein the plurality of light sources comprises a first light source disposed at a first area of the circuit board and a second light source disposed at a second area of the circuit board, wherein the first area is adjacent to the bezel, and wherein a first current is provided to the first light source and a second current is provided to the second light source and the second current is smaller than the first current. ### Claim 2 (depends on 1) The display apparatus according to claim 1, wherein a same level of display brightness is achieved across a displayed image at the panel when the first current is provided to the first light source and the second current is provided to the second light source. ### Claim 3 (depends on 1) The display apparatus according to claim 1, wherein the plurality of light sources further comprises a third light source disposed at a third area of the circuit board adjacent to a corner of the bezel, wherein a third current larger than the first current is provided to the third light source. ### Claim 4 (depends on 1) The display apparatus according to claim 1, wherein the plurality of displays comprises a first display adjacent to a second display, wherein the plurality of light sources further comprises a third light source disposed at a region of the first area adjacent to the second display, and wherein a third current provided to the third light source is smaller than the first current and larger than the second current. ### Claim 5 (depends on 1) The display apparatus according to claim 1, wherein an upper surface at an end of the panel is secured by the bezel. ### Claim 6 (depends on 1) The display apparatus according to claim 1, wherein a level of the first current is determined based on a distance between the plurality of light sources and the panel. ### Claim 7 (depends on 1) The display apparatus according to claim 1, wherein a difference between the first current and the second current is determined based on a distance between the first light source and the second light source. ### Claim 8 (depends on 1) The display apparatus according to claim 1, further comprising a plurality of controllers configured to output a corresponding image signal to each of the plurality of displays. ### Claim 9 (depends on 1) The display apparatus according to claim 1, wherein the plurality of displays is arranged in a 2×2 array. ### Claim 10 (depends on 1) The display apparatus according to claim 1, wherein each of the plurality of displays further comprises: a light source driving unit configured to: drive the plurality of light sources; and cause the first current to be provided to the first light source and the second current to be provided to the second light source. ### Claim 11 (depends on 1) The display apparatus according to claim 1, further comprising one or more controllers configured to cause the first current to be provided to the corresponding first light source and the second current to be provided to the corresponding second light source for each of the plurality of displays. ### Claim 12 (depends on 1) The display apparatus according to claim 1, further comprising: a controller configured to control the plurality of displays, a temperature sensor configured to sense a temperature of one or more of the plurality of displays; and a fan, wherein the controller is further configured to cause the fan to operate when the sensed temperature is higher than or equal to a threshold temperature. ### Claim 13 (depends on 1) The display apparatus according to claim 1, wherein the first area of the circuit board surrounds the second area. ### Claim 14 (depends on 1) The display apparatus according to claim 1, wherein: the plurality of light sources further comprises a third light source disposed at a third area of the circuit board adjacent to a corner of the bezel; a third current larger than the first current is provided to the third light source; and the first area and the third area are disposed between the bezel and the second area. ### Claim 15 A display apparatus comprising: a plurality of displays adjacently arranged, wherein each of the displays comprises: a plurality of light sources; a bezel surrounding the plurality of light sources; and a light source driving unit, wherein the plurality of light sources comprises a first light source disposed at a first area of a circuit board and a second light source disposed at a second area of the circuit board, wherein the first area is adjacent to the bezel and the second area is surrounded by the first area, wherein the light source driving unit is configured to cause a first current to be provided to the first light source and a second current to be provided to the second light source, wherein the second current is smaller than the first current, and wherein the display apparatus further comprises: a guide panel disposed at a side of the circuit board; and a diffusion sheet supported by the guide panel and disposed over the plurality of light sources. ### Claim 16 (depends on 15) The display apparatus according to claim 15, wherein each of the displays further comprises a panel, and wherein a same level of display brightness is achieved across a displayed image at the panel when the first current is provided to the first light source and the second current is provided to the second light source. ### Claim 17 (depends on 15) The display apparatus according to claim 15, wherein the plurality of displays comprises: a first display adjacent to a second display, wherein the plurality of light sources further comprises a third light source disposed at a region of the first area adjacent to the second display, and wherein the light source driving unit is further configured to cause a third current to be provided to the third light source wherein the third current is smaller than the first current and larger than the second current. ### Claim 18 (depends on 15) The display apparatus according to claim 15, wherein each of the displays further comprises a panel, and wherein a level of the first current is determined based on a distance between the plurality of light sources and the panel. ### Claim 19 (depends on 15) The display apparatus according to claim 15, wherein a difference between the first current and the second current is determined based on a distance between the first light source and the second light source. ### Claim 20 A display apparatus comprising: a plurality of displays adjacently arranged; a controller configured to control the plurality of displays; a temperature sensor configured to sense a temperature of one or more of the plurality of displays; and a fan, wherein each of the plurality of displays comprises: a panel; a bezel surrounding the panel; and a plurality of light sources disposed on a circuit board and configured to output light to the panel, wherein the plurality of light sources comprises a first light source disposed at a first area of the circuit board and a second light source disposed at a second area of the circuit board, wherein the first area is adjacent to the bezel, wherein a first current is provided to the first light source and a second current is provided to the second light source and the second current is smaller than the first current, and wherein the controller is further configured to cause the fan to operate when the sensed temperature is higher than or equal to a threshold temperature.