# US 11,910,641 B2 · Electroluminescent display substrate and display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,910,641 B2 - Document ID: US11910641B2 - Status: Granted - Kind: B2 - Application number: 17/309,474 - Filed: 2020-08-14 - Published: 2022-01-27 - Granted: 2024-02-20 - Earliest claimed: 2019-10-22 - Assignees: Chengdu Boe Optoelectronics Technology Co., Ltd.; Boe Technology Group Co., Ltd. - Applicants: Chengdu Boe Optoelectronics Technology Co., Ltd.; Boe Technology Group Co., Ltd. - Inventors: Youngyik Ko; Weiyun Huang; Chao Zeng; Yizhen Huang - Web page: https://patentgrep.com/patent/US11910641B2 ## CPC - G06F 3/0446: {using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes} - 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} - H10K 59/126: Shielding, e.g. light-blocking means over the TFTs - H10K 59/40: OLEDs integrated with touch screens - H10K 59/8731: {multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers} - G06F 2203/04103: Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices - H04M 1/0266: {for a display module assembly} - H10K 59/1201: {Manufacture or treatment} - H10K 59/8792: {comprising light absorbing layers, e.g. black layers} - H10K 77/10: Substrates, e.g. flexible substrates - H10K 2102/351: {Thickness} - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08) ## Abstract An electroluminescent display substrate and a display device are provided. The electroluminescent display substrate includes: a base substrate; a display light-emitting element arranged on the base substrate; an encapsulation structure arranged on the base substrate and covering the display light-emitting element; a light-shielding structure arranged on a side of the encapsulation structure away from the base substrate; and an opening at least passing through the encapsulation structure. The light-shielding structure includes a first light-shielding portion and a second light-shielding portion that extend continuously. A vertical distance between the first light-shielding portion and the base substrate is greater than that between the light-emitting layer of the display light-emitting element and the base substrate, and a vertical distance between at least a part of the second light-shielding portion and the base substrate is less than that between the light-emitting layer of the display light-emitting element and the base substrate. ## Claims ### Claim 1 An electroluminescent display substrate, comprising: a base substrate; a display light-emitting element arranged on the base substrate, wherein the display light-emitting element comprises a light-emitting layer for emitting light; an encapsulation structure arranged on the base substrate and covering the display light-emitting element; a light-shielding structure arranged on a side of the encapsulation structure away from the base substrate; and an opening at least passing through the encapsulation structure, wherein an orthographic projection of the light-shielding structure on the base substrate is located between an orthographic projection of the light-emitting layer of the display light-emitting element on the base substrate and an orthographic projection of the opening on the base substrate, and wherein the light-shielding structure comprises a first light-shielding portion and a second light-shielding portion that extend continuously, the base substrate comprises a first surface close to the display light-emitting element and the light-shielding structure, a vertical distance between the first light-shielding portion and the first surface of the base substrate is greater than a vertical distance between the light-emitting layer of the display light-emitting element and the first surface of the base substrate, and a vertical distance between at least a part of the second light-shielding portion and the first surface of the base substrate is less than the vertical distance between the light-emitting layer of the display light-emitting element and the first surface of the base substrate. ### Claim 2 (depends on 1) The electroluminescent display substrate of claim 1, wherein the light-emitting layer of the display light-emitting element comprises a first surface close to the base substrate, and the vertical distance between the at least a part of the second light-shielding portion and the first surface of the base substrate is less than a vertical distance between the first surface of the light-emitting layer and the first surface of the base substrate. ### Claim 3 (depends on 1) The electroluminescent display substrate of claim 1, further comprising a touch structure arranged on a side of the encapsulation structure away from the base substrate, wherein the touch structure comprises: a first touch layer arranged on a side of the encapsulation structure away from the base substrate, wherein the first touch layer comprises a first touch structure close to the opening, and the first touch structure forms the light-shielding structure; and a second touch layer arranged on a side of the first touch layer away from the base substrate. ### Claim 4 (depends on 1) The electroluminescent display substrate of claim 1, further comprising a touch structure arranged on a side of the encapsulation structure away from the base substrate, wherein the touch structure comprises: a first touch layer arranged on a side of the encapsulation structure away from the base substrate; and a second touch layer arranged on a side of the first touch layer away from the base substrate, wherein the second touch layer comprises a second touch structure close to the opening, and the second touch structure forms the light-shielding structure. ### Claim 5 (depends on 3) The electroluminescent display substrate of claim 3, wherein the first touch layer comprises a plurality of first touch wires arranged in a same layer, and the first touch structure is one of the plurality of first touch wires that is close to the opening. ### Claim 6 (depends on 5) The electroluminescent display substrate of claim 5, wherein the second touch layer comprises a plurality of second touch wires arranged in a same layer, and the first touch structure has a width greater than a width of each of the plurality of the second touch wires. ### Claim 7 (depends on 3) The electroluminescent display substrate of claim 3, wherein the first touch layer comprises a plurality of first touch wires arranged in a same layer, and the first touch structure is a first dummy touch wire arranged in a same layer as the plurality of first touch wires and arranged close to the opening. ### Claim 8 (depends on 7) The electroluminescent display substrate of claim 7, wherein the second touch layer comprises a plurality of second touch wires arranged in a same layer, and the first dummy touch wire has a width greater than a width of each of the plurality of second touch wires. ### Claim 9 (depends on 4) The electroluminescent display substrate of claim 4, wherein the second touch layer comprises a plurality of second touch wires arranged in a same layer, and the second touch structure is one of the plurality of second touch wires that is close to the opening. ### Claim 10 (depends on 9) The electroluminescent display substrate of claim 9, wherein the first touch layer comprises a plurality of first touch wires arranged in a same layer, and the second touch structure has a width greater than a width of each of the plurality of first touch wires. ### Claim 11 (depends on 4) The electroluminescent display substrate of claim 4, wherein the second touch layer comprises a plurality of second touch wires arranged in a same layer, and the second touch structure is a second dummy touch wire arranged in a same layer as the plurality of second touch wires and arranged close to the opening. ### Claim 12 (depends on 11) The electroluminescent display substrate of claim 11, wherein the first touch layer comprises a plurality of first touch wires arranged in a same layer, and the second dummy touch wire has a width greater than a width of each of the plurality of first touch wires. ### Claim 13 (depends on 5) The electroluminescent display substrate of claim 5, wherein the touch structure further comprises a touch insulating layer arranged on a side of the first touch layer away from the base substrate, and the touch insulating layer covers the first touch structure. ### Claim 14 (depends on 4) The electroluminescent display substrate of claim 4, wherein the touch structure further comprises a touch cover layer arranged on a side of the second touch layer away from the base substrate, and the touch cover layer covers the second touch structure. ### Claim 15 (depends on 1) The electroluminescent display substrate of claim 1, wherein the encapsulation structure comprises: a first inorganic encapsulation layer arranged on a side of the display light-emitting element away from the base substrate; an organic encapsulation layer arranged on a side of the first inorganic encapsulation layer away from the base substrate; and a second inorganic encapsulation layer arranged on a side of the organic encapsulation layer away from the base substrate, wherein an orthographic projection of the organic encapsulation layer on the base substrate has an area less than an area of an orthographic projection of each of the first inorganic encapsulation layer and the second inorganic encapsulation layer on the base substrate, and wherein an orthographic projection of the first light-shielding portion on the base substrate overlaps the orthographic projection of the organic encapsulation layer on the base substrate, and an orthographic projection of the second light-shielding portion on the base substrate does not overlap the orthographic projection of the organic encapsulation layer on the base substrate. ### Claim 16 (depends on 15) The electroluminescent display substrate of claim 15, further comprising: an isolation structure arranged on the base substrate, wherein an orthographic projection of the isolation structure on the base substrate is located between the orthographic projection of the light-emitting layer of the display light-emitting element on the base substrate and the orthographic projection of the opening on the base substrate, and wherein the orthographic projection of the light-shielding structure on the base substrate overlaps the orthographic projection of the isolation structure on the base substrate. ### Claim 17 (depends on 16) The electroluminescent display substrate of claim 16, wherein the orthographic projection of the second light-shielding portion on the base substrate at least partially overlaps the orthographic projection of the isolation structure on the base substrate. ### Claim 18 (depends on 1) The electroluminescent display substrate of claim 1, further comprising a barrier layer arranged between the encapsulation structure and the touch structure, wherein the light-shielding structure is located on a surface of the barrier layer away from the base substrate. ### Claim 19 (depends on 1) A display device comprising the electroluminescent display substrate of claim 1.