# US 12,223,873 B2 · Display device and image display method thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,223,873 B2 - Document ID: US12223873B2 - Status: Granted - Kind: B2 - Application number: 18/142,616 - Filed: 2023-05-03 - Published: 2024-02-22 - Granted: 2025-02-11 - Earliest claimed: 2022-08-16 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Kyung Hun Lee - Web page: https://patentgrep.com/patent/US12223873B2 ## CPC - G09G 3/007: {Use of pixel shift techniques, e.g. by mechanical shift of the physical pixels or by optical shift of the perceived pixels} - 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} - G09G 3/32: semiconductive, e.g. using light-emitting diodes [LED] - G09G 2310/0286: Details of a shift registers arranged for use in a driving circuit - G09G 2310/08: Details of timing specific for flat panels, other than clock recovery - G09G 2320/0257: Reduction of after-image effects - G09G 2320/046: Dealing with screen burn-in prevention or compensation of the effects thereof - G09G 2330/026: Arrangements or methods related to booting a display - 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 An image display method of a display device shifts an image along a first path during a first power-on of the display device and shifts the image along a second path different from the first path during a second power-on of the display device. ## Claims ### Claim 1 An image display method of a display device, comprising: shifting an image along a first path during a first power-on of the display device; and shifting the image along a second path different from the first path during a second power-on of the display device, wherein a display surface of the display device on which the image is displayed includes a plurality of areas, wherein the shifting the image along the first path comprises: displaying the image at a reference point; and shifting the image from the reference point to a first area among the plurality of areas, wherein the shifting the image from the reference point to the first area comprises: shifting the image along a first movement direction from the reference point to a first outermost point of the first area, and shifting the image along a direction opposite to the first movement direction, and wherein the first outermost point is a point farthest apart from the reference point among points within the first area. ### Claim 2 (depends on 1) The image display method according to claim 1, wherein a second movement direction in which the image is initially shifted along the second path is different from the first movement direction in which the image is initially shifted along the first path. ### Claim 3 (depends on 2) The image display method according to claim 2, wherein a location at which an image is initially displayed when the display device is powered on is different from a location at which an image is displayed when the display device is powered off. ### Claim 4 (depends on 2) The image display method according to claim 2, wherein a location at which an image is initially displayed during the second power-on of the display device is identical to a location at which an image is initially displayed during the first power-on of the display device. ### Claim 5 (depends on 1) The image display method according to claim 1, wherein the shifting the image along the second path comprises: displaying the image at the reference point; and shifting the image from the reference point to a second area among the plurality of areas. ### Claim 6 (depends on 1) The image display method according to claim 1, wherein the reference point is an area center of the display surface. ### Claim 7 (depends on 1) The image display method according to claim 1, wherein the shifting the image from the reference point to the second area comprises: shifting the image along a second movement direction from the reference point to a second outermost point of the second area; and shifting the image along a direction opposite to the second movement direction, and wherein the second outermost point is a point farthest apart from the reference point among points within the second area. ### Claim 8 (depends on 1) The image display method according to claim 1, further comprising: shifting the image along a third path different from the first path and the second path during a third power-on of the display device. ### Claim 9 (depends on 8) The image display method according to claim 8, further comprising: shifting the image along a fourth path different from the first path, the second path, and the third path during a fourth power-on of the display device. ### Claim 10 (depends on 1) The image display method according to claim 1, wherein the shifting the image along the first path comprises: counting a driving time of the display device; and updating information on an initial movement direction or an initial shift path when the driving time exceeds a reference time, and wherein the second path is set based on the updated information. ### Claim 11 A display device comprising: a display panel including pixels; an image converter resetting a shift path whenever the display device is powered on, and convert first data into second data so that an image displayed on the display panel is shifted along the reset shift path; and a data driver configured to provide a data signal corresponding to the second data to the pixels, wherein a display surface of the display device on which the image is displayed includes a first area, and wherein the reset shift path in the first area starts from a reference point to a first outmost point disposed farthest apart from the reference point among points within the first area and returns from the first outmost point to the reference point. ### Claim 12 (depends on 11) The display device according to claim 11, wherein the image converter comprises a path setting block which receives a power enable signal and sets an initial movement direction of an image in a current power on period to be different from an initial movement direction of an image in a previous power-on period. ### Claim 13 (depends on 12) The display device according to claim 12, the image converter further comprises an image correction block which receives first image data and the initial movement direction of the image in the current power on period and generates second image data. ### Claim 14 (depends on 13) The display device according to claim 13, the image converter further comprises a memory which stores data for the shift path and provides the shift path to the image correction block.