# US 10,504,461 B2 · Display apparatus and display method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,504,461 B2 - Document ID: US10504461B2 - Status: Granted - Kind: B2 - Application number: 15/856,446 - Filed: 2017-12-28 - Published: 2018-07-05 - Granted: 2019-12-10 - Earliest claimed: 2016-12-30 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Soo-hong Kim; Young-mo Kang - Web page: https://patentgrep.com/patent/US10504461B2 ## CPC - G09G 3/3607: {for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels (display of colours in flat matrix panels other than liquid crystal displays G09G3/2003; grey scales specific for television H04N3/127)} - G09G 3/006: {Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays (testing individual LED's G01R31/2635; testing lamps G01R31/44; testing of optical features of LCD displays G02F1/1309)} - 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 3/2007: {Display of intermediate tones} - G09G 3/2081: {with combination of amplitude modulation and time modulation (space and time error diffusion G09G3/2066)} - G09G 3/3413: {Details of control of colour illumination sources} - G09G 3/3648: {using an active matrix (G09G3/367 - G09G3/3696 take precedence)} - G09G 2320/0233: Improving the luminance or brightness uniformity across the screen - G09G 2320/0285: using tables for spatial correction of display data - G09G 2320/029: by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel - G09G 2320/0693: Calibration of display systems - G09G 2360/144: the light being ambient light - G09G 2360/145: the light originating from the display screen - 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 is provided. The display apparatus includes: a display panel; a sensor configured to sense illuminance around the display panel; a communicator configured to perform communication with an external apparatus; and a processor configured to allow a test image having luminance determined on the basis of the sensed illuminance to be displayed on the display panel, receive correction data from the external apparatus photographing the displayed test image through the communicator, and correct luminance of the display panel on the basis of the correction data, wherein the test image is a single color image including a plurality of markers, and the processor allows the test image to be displayed at luminance that becomes relatively high as a level of the sensed illuminance becomes high. ## Claims ### Claim 1 A display apparatus comprising: a display panel; a sensor; a communicator configured to perform communication with an external apparatus; and at least one processor configured to: based on a illuminance around the display panel being sensed by the sensor, determine a luminance of a test image for distinguishing a luminance corresponding to a specific region of the display panel from a luminance corresponding to another region of the display panel so that a higher sensed luminance respectively results in a higher determined luminance, control the display panel to display the test image with the determined luminance, receive, from an external apparatus, through the communicator, correction data that is identified based on a photograph being captured by the external apparatus from the display panel which is the displayed test image, correct a gray scale value of an image data corresponding to the specific region of the display panel based on the received correction data, and control the display panel to display the image data of which the gray scale value is corrected on the specific region of the display panel, wherein the test image is a single color image including a plurality of markers. ### Claim 2 (depends on 1) The display apparatus as claimed in claim 1, wherein the received correction data comprises a correction gray scale value of a specific region of the display panel. ### Claim 3 (depends on 2) The display apparatus as claimed in claim 2, wherein the correction gray scale value indicates a correction gray scale value required for luminance measured by the external apparatus in each region of a plurality of regions of the photograph to be a target illumination. ### Claim 4 (depends on 2) The display apparatus as claimed in claim 2, further comprising a timing controller configured to drive the display panel, wherein, to correct the luminance of the display panel, the at least one processor controls the timing controller so that the gray scale value of image data displayed on the specific region of the display panel is corrected on based on the correction gray scale value. ### Claim 5 (depends on 2) The display apparatus as claimed in claim 2, wherein, to correct the luminance of the display panel, the at least one processor corrects luminance of the specific region of the display panel by controlling a light source of a backlight to irradiate light to the specific region of the display panel based on the correction gray scale value. ### Claim 6 (depends on 1) The display apparatus as claimed in claim 1, wherein the plurality of markers are displayed on corner portions of the test image. ### Claim 7 A display method of a display apparatus comprising a display panel, the display method comprising: by at least one processor of the display apparatus: sensing an illuminance around the display panel; based on a illuminance around the display panel being sensed, determining a luminance of a test image for distinguishing a luminance corresponding to a specific region of the display panel from a luminance corresponding to another region of the display panel so that a higher sensed luminance respectively results in a higher determined luminance; displaying the test image with the determined luminance on the display panel; receiving, from an external apparatus, correction data that is identified based on a photograph being captured by the external apparatus from the display panel which is the displayed test image; correcting a gray scale value of an image data corresponding to the specific region of the display panel on based on the received correction data; and displaying the image data of which the gray scale value is corrected on the specific region of the display panel, wherein the test image is a single color image including a plurality of markers. ### Claim 8 (depends on 7) The display method as claimed in claim 7, wherein the received correction data comprises a correction gray scale value of a specific region of the display panel. ### Claim 9 (depends on 8) The display method as claimed in claim 8, wherein the correction gray scale value indicates a correction gray scale value required for luminance measured by the external apparatus in each region of a plurality of regions of the photograph to be a target illumination. ### Claim 10 (depends on 8) The display method as claimed in claim 8, wherein the correcting the luminance of the display panel comprises controlling a timing controller of the display apparatus so that the gray scale value of image data displayed on the specific region of the display panel is corrected on the based on the correction gray scale value. ### Claim 11 (depends on 8) The display method as claimed in claim 8, wherein the correcting the luminance of the display panel comprises correcting luminance of the specific region of the display panel by controlling a light source of a backlight to irradiate light to the specific region of the display panel based on the correction gray scale value. ### Claim 12 (depends on 7) The display method as claimed in claim 7, wherein the displaying displays the test image with the plurality of markers on corner portions of the test image. ### Claim 13 A display apparatus comprising: a display panel; a sensor; and at least one processor configured to: based on a illuminance around the display panel being sensed by the sensor, determine a luminance of a test image that is proportional to the sensed illuminance for distinguishing a luminance corresponding to a specific region of the display panel from a luminance corresponding to another region of the display panel, control the display panel to display the test image with the determined luminance, receive, from an external apparatus, correction data that is identified based on a photograph being captured by the external apparatus from the display panel which is the displayed test image, correct a gray scale value of an image data corresponding to the specific region of the display panel based on the received correction data, and control the display panel to display the image data of which the gray scale value is corrected on the specific region of the display panel. ### Claim 14 (depends on 13) The display apparatus as in claim 13, wherein the test image is a single color image including a plurality of markers. ### Claim 15 (depends on 13) The display apparatus as in claim 13, wherein the at least one processor determines the luminance for the test image so that a higher sensed luminance respectively results in a higher determined luminance, the determined luminance thereby being proportional to the sensed illuminance. ### Claim 16 (depends on 14) The display apparatus as in claim 14, wherein the at least one processor determines the luminance for the test image so that a higher sensed luminance respectively results in a higher determined luminance, the determined luminance thereby being proportional to the illuminance around the display panel sensed by the sensor.