# US 12,223,129 B2 · Display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,223,129 B2 - Document ID: US12223129B2 - Status: Granted - Kind: B2 - Application number: 18/210,117 - Filed: 2023-06-15 - Published: 2024-04-25 - Granted: 2025-02-11 - Earliest claimed: 2022-10-20 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Soo Yeong Hong; Gee Bum Kim; Sang Woo Kim; Kwang Soo Bae; Bo Kwang Song - Web page: https://patentgrep.com/patent/US12223129B2 ## CPC - G06F 3/0412: {Digitisers structurally integrated in a display} - G06F 3/0443: {using a single layer of sensing electrodes} - G06F 3/0446: {using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes} - G09G 3/32: semiconductive, e.g. using light-emitting diodes [LED] - H10K 59/40: OLEDs integrated with touch screens - G06F 2203/04112: Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - 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) - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract A device comprises a substrate, a plurality of emission portions disposed on the substrate and emitting light, a plurality of light sensing portions disposed on the substrate and sensing an incident light, a bank layer partitioning the plurality of emission portions and the plurality of light sensing portions, and a touch sensing layer disposed on the bank layer. The touch sensing layer comprises a first touch insulating pattern disposed on the bank layer and partitioning a light opening overlapping the plurality of light sensing portions and a touch electrode disposed on the first touch insulating pattern. A cross-sectional shape of the first touch insulating pattern has a reverse tapered shape having a width that decreases towards a top surface of the substrate. ## Claims ### Claim 1 A display device comprising: a substrate; a plurality of emission portions disposed on the substrate, the plurality of emission portions emitting light; a plurality of light sensing portions disposed on the substrate, the plurality of light sensing portions sensing an incident light; a bank layer partitioning the plurality of emission portions and the plurality of light sensing portions; and a touch sensing layer disposed on the bank layer; wherein the touch sensing layer comprises: a first touch insulating pattern disposed on the bank layer, the first touch insulating pattern partitioning a light opening overlapping the plurality of light sensing portions; and a touch electrode disposed on the first touch insulating pattern, wherein a cross-sectional shape of the first touch insulating pattern has a reverse tapered shape having a width that decreases in a direction towards a top surface of the substrate. ### Claim 2 (depends on 1) The display device of claim 1, wherein the touch electrode comprises: a first touch pattern disposed on a top surface of the first touch insulating pattern; and a second touch pattern disposed on a side surface of the first touch insulating pattern. ### Claim 3 (depends on 2) The display device of claim 2, wherein the first touch pattern protrudes from the side surface of the first touch insulating pattern towards a central portion of the light opening. ### Claim 4 (depends on 2) The display device of claim 2, wherein the second touch pattern directly contacts the side surface of the first touch insulating pattern. ### Claim 5 (depends on 2) The display device of claim 2, wherein the second touch pattern covers an entirety of the side surface of the first touch insulating pattern. ### Claim 6 (depends on 2) The display device of claim 2, wherein the first touch pattern comprises a mesh pattern. ### Claim 7 (depends on 1) The display device of claim 1, wherein: the first touch insulating pattern comprises a first reverse tapered surface adjacent to the light opening; and an inclination angle of the first reverse tapered surface is in a range of about 65 degrees to about 90 degrees. ### Claim 8 (depends on 1) The display device of claim 1, wherein a first distance between the touch electrode and a center of an adjacent light sensing portion of the plurality of light sensing portions in one direction is less than a second distance between the touch electrode and a center of a first emission portion among the plurality of emission portions in the one direction, the first emission portion is adjacent to the touch electrode. ### Claim 9 (depends on 8) The display device of claim 8, wherein a width of the adjacent light sensing portion in the one direction is greater than the first distance. ### Claim 10 (depends on 9) The display device of claim 9, wherein a ratio of the width of the adjacent light sensing portion to the first distance in the one direction is in a range of about 1.8 to about 2. ### Claim 11 (depends on 8) The display device of claim 8, wherein the first emission portion and the light sensing portion are repeatedly arranged with each other along the one direction. ### Claim 12 (depends on 1) The display device of claim 1, further comprising: a light emitting layer disposed on each of the plurality of emission portions, on the substrate; a photoelectric conversion layer disposed on each of the plurality of light sensing portions, on the substrate; and a common electrode disposed on the light emitting layer and the photoelectric conversion layer. ### Claim 13 (depends on 12) The display device of claim 12, wherein a cross-sectional shape of the light opening is a tapered shape having a width that increases in a direction towards a top surface of the substrate. ### Claim 14 A display device comprising: a substrate; a plurality of emission portions disposed on the substrate, the plurality of emission portions emitting light; a plurality of light sensing portions disposed on the substrate, the plurality of light sensing portions sensing an incident light; a bank layer partitioning the plurality of emission portions and the plurality of light sensing portions; and a touch sensing layer disposed on the bank layer, wherein the touch sensing layer comprises: a first touch insulating pattern disposed on the bank layer, the first touch insulating pattern partitioning a light opening overlapping the light sensing portion; a first touch pattern disposed on a top surface of a first touch insulating pattern; and a second touch pattern disposed on a side surface of the first touch insulating pattern, wherein an opening width of the second touch pattern increases in a direction towards a top surface of the substrate. ### Claim 15 (depends on 14) The display device of claim 14, wherein an angle between the top surface of the first touch insulating pattern and the side surface of the first touch insulating pattern is an acute angle. ### Claim 16 (depends on 14) The display device of claim 14, wherein the second touch pattern covers an entirety of the side surface of the first touch insulating pattern. ### Claim 17 (depends on 14) The display device of claim 14, wherein the first touch pattern comprises a mesh pattern. ### Claim 18 (depends on 14) The display device of claim 14, wherein a first distance between the first touch pattern and an adjacent light sensing portion of the plurality of light sensing portions in one direction is less than a second distance between the first touch pattern and a first emission portion among the plurality of emission portions in the one direction, the first emission portion is adjacent to the first touch pattern. ### Claim 19 (depends on 18) The display device of claim 18, wherein a width of the adjacent light sensing portion in the one direction is greater than the first distance. ### Claim 20 (depends on 19) The display device of claim 19, wherein a ratio of the width of the adjacent light sensing portion to the first distance in the one direction is in a range of about 1.8 to about 2.