# US 10,319,288 B2 · Optical element of LED display apparatus and LED display apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,319,288 B2 - Document ID: US10319288B2 - Status: Granted - Kind: B2 - Application number: 15/291,270 - Filed: 2016-10-12 - Published: 2017-05-04 - Granted: 2019-06-11 - Earliest claimed: 2015-11-03 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Tae-woo Kim; Byong-heon Jeon - Web page: https://patentgrep.com/patent/US10319288B2 ## CPC - G09G 3/32: semiconductive, e.g. using light-emitting diodes [LED] - G09G 2320/0666: for control of colour parameters, e.g. colour temperature - G09G 2330/10: Dealing with defective pixels - G09G 2330/12: Test circuits or failure detection circuits included in a display system, as permanent part thereof - G09G 2340/12: Overlay of images, i.e. displayed pixel being the result of switching between the corresponding input pixels - 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 display apparatus and a controlling method thereof are provided. The method of controlling the display apparatus including a plurality of LED devices, includes determining whether a plurality of LED devices are open using, for example, a pin voltage connected to the plurality of LED devices, in response to an open LED device being present, determining a coordinate of the open LED device, processing an image so that a particular color is output in an area where the open LED device is located, and outputting the processed image. ## Claims ### Claim 1 A method of controlling a display apparatus comprising a plurality of light emitting diode (LED) devices, the method comprising: determining whether any of the plurality of LED devices are open; in response to an determining that an open LED device is present, determining a coordinate of the open LED device; processing an image to output a black color in an area where the open LED device is located based on the determined coordinate of the open LED device; and outputting the processed image. ### Claim 2 (depends on 1) The method as claimed in claim 1, wherein the processing an image comprises processing the image such that a black image is overlaid with an original input image where the determined coordinate of the open LED device is located, and the overlaid black image is output where the determined coordinate of the open LED device is located. ### Claim 3 (depends on 1) The method as claimed in claim 1, wherein the processing an image comprises displaying the open LED device with black so that a black color is output in an area where the determined coordinate of the open LED device is located. ### Claim 4 (depends on 1) The method as claimed in claim 1, wherein the determining whether the LED device is open comprises measuring a pin voltage connected to the plurality of LED devices and determining an LED device of which the measured pin voltage is greater than or equal to a predetermined threshold value as an open LED device. ### Claim 5 (depends on 1) The method as claimed in claim 1, wherein the determining a coordinate of the open LED device comprises determining the coordinate of the open LED device where a predetermined period is reached and where a request for a coordinate of the open LED device is received. ### Claim 6 (depends on 1) The method as claimed in claim 1, wherein the open LED device is an LED device in which an anode which discharges current and a cathode which receives current are not connected to other LED devices. ### Claim 7 A display apparatus, comprising: a plurality of LED devices; a driver configured to operate the plurality of LED devices, and to determine whether any of the plurality of LED devices are open; image signal converting circuitry configured to determine a coordinate of an open LED device, in response to an open LED device being present; and a processor configured to process an image to output a black color in an area where the open LED device is located based on the determined coordinate of the open LED device, and to control the image signal converting circuitry to convert the processed image to a signal processable by the driver. ### Claim 8 (depends on 7) The apparatus as claimed in claim 7, wherein the processor is configured to process an image such that a black image is overlaid with an original input image where the determined coordinate of the open LED device is located, and the overlaid black image is output where the determined coordinate of the open LED device is located. ### Claim 9 (depends on 7) The apparatus as claimed in claim 7, wherein the processor is configured to process an image to display the open LED device with black so that a black color is output in an area where the determined coordinate of the open LED device is located. ### Claim 10 (depends on 7) The apparatus as claimed in claim 7, wherein the processor is configured to determine a pin voltage connected to the plurality of LED devices, and to control the driver to determine that an LED device of which the determined pin voltage is greater than or equal to a predetermined threshold value as an open LED device. ### Claim 11 (depends on 7) The apparatus as claimed in claim 7, wherein the processor is configured to control the image signal converting circuitry to determine a coordinate of an open LED device where a predetermined period is reached and where a request for the coordinate of the open LED device is received. ### Claim 12 (depends on 7) The apparatus as claimed in claim 7, wherein the open LED device is an LED device in which an anode which discharges current and a cathode which receives current are not connected to other LED devices.