# US 12,217,682 B2 · Light emitting display apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,217,682 B2 - Document ID: US12217682B2 - Status: Granted - Kind: B2 - Application number: 18/383,734 - Filed: 2023-10-25 - Published: 2024-07-04 - Granted: 2025-02-04 - Earliest claimed: 2022-12-29 - Assignees: LG Display Co., Ltd. - Applicants: LG Display Co., Ltd. - Inventors: TaeWoo Kim; DongJin Jeong; Hongseok Choi - Web page: https://patentgrep.com/patent/US12217682B2 ## CPC - G09G 3/3233: with pixel circuitry controlling the current through the light-emitting element - G09G 2300/0842: forming a memory circuit, e.g. a dynamic memory with one capacitor - G09G 2320/045: Compensation of drifts in the characteristics of light emitting or modulating elements - G09G 2320/0613: The adjustment depending on the type of the information to be displayed - G09G 2320/0626: for control of overall brightness - G09G 2320/103: Detection of image changes, e.g. determination of an index representative of the image change - G09G 2354/00: Aspects of interface with display user - 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 light emitting display apparatus includes a control driver configured to perform a deterioration prevention function, a scaler configured to transfer a deterioration prevention function activation request signal to the control driver and transfer a deterioration prevention function deactivation request signal to the control driver based on an analysis result of input image data when deterioration prevention function start information is received from the control driver, and a light emitting display panel configured to display images under the control of the control driver. ## Claims ### Claim 1 A light emitting display apparatus comprising: a control driver configured to perform a deterioration prevention function; a scaler configured to transmit a deterioration prevention function activation request signal to the control driver, and transmit a deterioration prevention function deactivation request signal to the control driver based on an analysis result of input image data when deterioration prevention function start information is received from the control driver; and a light emitting display panel configured to display images under control of the control driver, wherein after a preset period elapses since the scaler has transmitted the deterioration prevention function deactivation request signal to the control driver, the scaler transmits another deterioration prevention function activation request signal to the control driver. ### Claim 2 (depends on 1) The light emitting display apparatus according to claim 1, wherein the control driver analyzes input image signals received from the scaler when the deterioration prevention function activation request signal is received, the control driver reduces a luminance of images output from the light emitting display panel or reduces a luminance of only a specific area on the light emitting display panel when it is determined that the deterioration prevention function is to be executed based on the analysis result of the input image signals, and the control driver transmits the deterioration prevention function start information to the scaler when the deterioration prevention function is executed. ### Claim 3 (depends on 1) The light emitting display apparatus according to claim 1, wherein the scaler transmits the deterioration prevention function deactivation request signal to the control driver when it is determined that a change occurs in a portion of images to be continuously output from the light emitting display panel. ### Claim 4 (depends on 3) The light emitting display apparatus according to claim 3, wherein the change in the portion of the images to be continuously output is a change caused by a movement of a mouse cursor. ### Claim 5 (depends on 3) The light emitting display apparatus according to claim 3, wherein the change in the portion of the images to be continuously output is a change associated with a character or a key on a keyboard. ### Claim 6 (depends on 1) The light emitting display apparatus according to claim 1, wherein an amount of change in an image used to generate the deterioration prevention function deactivation request signal in the scaler is smaller than an amount of change in an image used to terminate the deterioration prevention function by the control driver. ### Claim 7 (depends on 1) The light emitting display apparatus according to claim 1, wherein the scaler does not generate the deterioration prevention function deactivation request signal when a change in an image occurs in a predetermined specific area among an entire display area of the light emitting display panel. ### Claim 8 (depends on 7) The light emitting display apparatus according to claim 7, wherein the specific area is an area which is not affected by the deterioration prevention function. ### Claim 9 (depends on 1) The light emitting display apparatus according to claim 1, wherein the control driver analyzes input image signals received from the scaler when the another deterioration prevention function activation request signal is received after the preset period has elapsed, and changes a luminance of images output from the light emitting display panel according to results of analyzing the input image signals. ### Claim 10 (depends on 1) The light emitting display apparatus according to claim 1, wherein the scaler includes: an image information receiving portion configured to receive image information; a converting portion configured to convert the image information into the input image data; and an analyzing portion configured to generate and transmit the deterioration prevention function activation request signal to the control driver, and generate and transmit the deterioration prevention function deactivation request signal to the control driver according to the analysis result of the input image data when the deterioration prevention function start information is received from the control driver. ### Claim 11 (depends on 1) The light emitting display apparatus according to claim 1, wherein the light emitting display apparatus is a television configured to be used as a monitor to another electronic device when the another electronic device is coupled with the light emitting display apparatus. ### Claim 12 (depends on 1) The light emitting display apparatus according to claim 1, wherein the scaler transmits the deterioration prevention function deactivation request signal to the control driver when a change in the input image data is determined to be equal to or greater than a reference value, and wherein the reference value is 0.1% of the input image data corresponding to one image. ### Claim 13 An electronic apparatus comprising: a display panel configured to display images; at least one driver configured to drive the display panel; a control driver configured to supply image data to the at least one driver, and activate a deterioration prevention function on the display panel; and a scaler configured to analyze image data input thereto, determine a change in the image data, and transmit a deterioration prevention function deactivation request signal to the control driver when the change in the input image data is determined to be equal to or greater than a reference value, wherein the control driver starts the analyzing of the image data input thereto in response to a deterioration prevention function activation request signal received from the scaler, and wherein after a predetermined time period has elapsed since the transmission of the deterioration prevention function deactivation request signal to the control driver, the scaler regenerates and transmits another deterioration prevention function activation request signal to the control driver. ### Claim 14 (depends on 13) The electronic apparatus according to claim 13, wherein the control driver analyzes image data input thereto and activates the deterioration prevention function when the image data input thereto corresponds to a still image and/or an image including a logo. ### Claim 15 (depends on 13) The electronic apparatus according to claim 13, wherein the deterioration prevention function is a temporal peak luminance control (TPC) function or a logo extraction algorithm (LEA) function. ### Claim 16 (depends on 13) The electronic apparatus according to claim 13, wherein the change in the input image data determined by the scaler includes a change in a movement of a cursor displayed on the display panel or a character associated with the display panel. ### Claim 17 (depends on 13) The electronic apparatus according to claim 13, wherein the change in the input image data determined by the scaler excludes a change made to a specified display area on the display panel or a change made to a clock displaying area on the display panel. ### Claim 18 (depends on 13) The electronic apparatus according to claim 13, wherein the reference value is 0.1% of the input image data corresponding to one image. ### Claim 19 An electronic apparatus comprising: a display panel configured to display images; at least one driver configured to drive the display panel; a control driver configured to supply image data to the at least one driver, and activate a deterioration prevention function on the display panel; and a scaler configured to analyze image data input thereto, determine a change in the image data, and transmit a deterioration prevention function deactivation request signal to the control driver when the change in the input image data is determined to be equal to or greater than a reference value, wherein the reference value is 0.1% of the input image data corresponding to one image.