# US 2022/0037418 A1 · Display device and mobile terminal device including the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2022/0037418 A1 - Document ID: US20220037418A1 - Status: Published application - Kind: A1 - Application number: 17/377,129 - Filed: 2021-07-15 - Published: 2022-02-03 - Earliest claimed: 2020-07-30 - Assignees: LG Display Co., Ltd. - Applicants: LG Display Co., Ltd. - Inventors: Man Hyeop HAN; In Hyuk SONG; Seung Taek OH - Web page: https://patentgrep.com/patent/US20220037418A1 ## CPC - H10K 59/65: OLEDs integrated with inorganic image sensors - G06F 3/0412: {Digitisers structurally integrated in a display} - G06F 3/0445: {using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer} - G06V 40/1306: {non-optical, e.g. ultrasonic or capacitive sensing} - G09G 3/3291: in which the data driver supplies a variable data voltage for setting the current through, or the voltage across, the light-emitting elements - H10K 59/353: {characterised by the geometrical arrangement of the RGB subpixels} - H10K 59/40: OLEDs integrated with touch screens - H10K 39/32: Organic image sensors - H10K 59/352: {the areas of the RGB subpixels being different} - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING - 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 device and a mobile terminal device including the same are provided, wherein the display device includes a display panel including a display area in which a plurality of display pixels are disposed, and a sensing area in which a plurality of display pixels and a plurality of sensor pixels are disposed. The display pixels of the display area and the display pixels of the first sensing area emit light by receiving a data voltage of an input image in a display mode. The sensor pixels in the first sensing area generate an electric currents according to light reflected from a fingerprint in a fingerprint recognition mode. A resolution of the display pixel is lower than a resolution of the sensor pixel in the first sensing area. ## Claims ### Claim 1 A display device, comprising: a display panel including a display area in which a plurality of display pixels are disposed, and a first sensing area in which a plurality of display pixels and a plurality of sensor pixels are disposed, wherein the display pixels in the display area and the display pixels in the first sensing area emit light by receiving a data voltage of an input image in a display mode, the sensor pixels in the first sensing area generate an electric currents according to light reflected from a fingerprint in a fingerprint recognition mode, and a resolution of the display pixel in the first sensing area is lower than a resolution of the sensor pixel in the first sensing area. ### Claim 2 (depends on 1) The display device of claim 1, wherein, the resolution of the display pixel in the first sensing area is as low as ¼ of the resolution of the sensor pixel in the first sensing area. ### Claim 3 (depends on 1) The display device of claim 1, wherein: the first sensing area includes a plurality of pixel groups, each including one or two display pixels; adjacent pixel groups in the first sensing area are spaced apart from each other with the sensor pixel interposed therebetween; distances between the adjacent pixel groups in the first sensing area are the same in a width direction and a length direction of the display panel; distances between adjacent sensor pixels in the first sensing area are the same in the width direction and the length direction of the display panel; and the distance between the adjacent pixel groups in the first sensing area is longer than the distance between the adjacent sensor pixels in the first sensing area. ### Claim 4 (depends on 1) The display device of claim 1, wherein: the display panel further includes a second sensing area in which a plurality of light transmitting parts and a plurality of display pixels are disposed; and a resolution of the display pixel in the second sensing area is lower than the resolution of the sensor pixel in the first sensing area. ### Claim 5 (depends on 4) The display device of claim 4, wherein the resolution of the display pixel in the second sensing area is as low as ¼ of the resolution of the sensor pixel in the first sensing area. ### Claim 6 (depends on 5) The display device of claim 5, wherein: the second sensing area includes a plurality of pixel groups, each including one or two display pixels; and adjacent pixel groups in the second sensing area are spaced apart from each other with the light transmitting part interposed therebetween. ### Claim 7 (depends on 2) The display device of claim 2, further comprising an optical sensor disposed below the display panel and having a light-receiving surface facing the second sensing area. ### Claim 8 (depends on 6) The display device of claim 6, wherein each of the display pixels includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel. ### Claim 9 (depends on 6) The display device of claim 6, wherein: each of the pixel groups includes a first pixel and a second pixel; the first pixel includes a red sub-pixel and a first green sub-pixel; and the second pixel includes a blue sub-pixel and a second green sub-pixel. ### Claim 10 (depends on 9) The display device of claim 9, wherein each of the pixel groups includes a pixel in which the sub-pixels are disposed in a form of a rhombic shape or a parallelogram shape. ### Claim 11 (depends on 1) The display device of claim 1, wherein: a light-emitting element of each of the display pixels includes an organic light-emitting diode (OLED); each of the sensor pixels includes an organic photodiode; an anode electrode of the OLED is disposed to be coplanar with an anode electrode of the organic photodiode; a cathode electrode of the OLED is disposed to be coplanar with a cathode electrode of the organic photodiode; and a pixel drive circuit configured to drive the OLED and a photosensor drive circuit configured to drive the organic photodiode share one or more lines. ### Claim 12 (depends on 6) The display device of claim 6, further comprising a data driver configured to output a data voltage of pixel data to be written in the display pixels, wherein a dynamic range of a data voltage applied to the first and second sensing areas is larger than a dynamic range of a data voltage applied to the display area. ### Claim 13 (depends on 12) The display device of claim 12, wherein: the data driver outputs a light source driving voltage that is higher than the data voltage of the pixel data in the fingerprint recognition mode; and the light source driving voltage is applied to the display pixels in the first sensing area. ### Claim 14 A mobile terminal device, comprising: a display panel including a display area in which a plurality of display pixels are disposed, and a first sensing area in which a plurality of display pixels and a plurality of sensor pixels are disposed; and a fingerprint recognition processor configured to generate fingerprint pattern data from a signal which is photoelectrically converted by the sensor pixels, wherein the display pixels of the display area and the display pixels of the first sensing area emit light by receiving a data voltage of an input image in a display mode, and a resolution of the display pixel in the first sensing area is lower than a resolution of the sensor pixel in the first sensing area. ### Claim 15 (depends on 14) The mobile terminal device of claim 14, wherein the resolution of the display pixel in the first sensing area is as low as ¼ of the resolution of the sensor pixel in the first sensing area. ### Claim 16 (depends on 14) The mobile terminal device of claim 14, wherein: the first sensing area includes a plurality of pixel groups, each including one or two display pixels; adjacent pixel groups in the first sensing area are spaced apart from each other with the sensor pixel interposed therebetween; distances between the adjacent pixel groups in the first sensing area are the same in a width direction and a length direction of the display panel; distances between adjacent sensor pixels in the first sensing area are the same in the width direction and the length direction of the display panel; and the distance between the adjacent pixel groups in the first sensing area is longer than the distance between the adjacent sensor pixels in the first sensing area. ### Claim 17 (depends on 15) The mobile terminal device of claim 15, wherein: the display panel further includes a second sensing area in which a plurality of light transmitting parts and a plurality of display pixels are disposed; and a resolution of the display pixel in the second sensing area is lower than the resolution of the sensor pixel in the first sensing area. ### Claim 18 (depends on 17) The mobile terminal device of claim 17, wherein the resolution of the display pixel in the second sensing area is as low as ¼ of the resolution of the sensor pixel in the first sensing area. ### Claim 19 (depends on 18) The mobile terminal device of claim 18, wherein: the second sensing area includes a plurality of pixel groups, each including one or two display pixels; and adjacent pixel groups in the second sensing area are spaced apart from each other with the light transmitting part interposed therebetween. ### Claim 20 (depends on 19) The mobile terminal device of claim 19, further comprising an optical sensor disposed below the display panel and having a light-receiving surface facing the second sensing area.