# US 10,503,327 B2 · Organic light-emitting display panel and fabrication method thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,503,327 B2 - Document ID: US10503327B2 - Status: Granted - Kind: B2 - Application number: 15/401,821 - Filed: 2017-01-09 - Published: 2017-04-27 - Granted: 2019-12-10 - Earliest claimed: 2016-09-22 - Assignees: Shanghai Tianma Micro-Electronics Co., Ltd.; Tianma Micro-Electronics Co., Ltd. - Applicants: Shanghai Tianma Micro-electronics Co., Ltd.; Tianma Micro-electronics Co., Ltd. - Inventors: Yu Cai; Xuening Liu; Heeyol Lee; Quanpeng Yu; Conghui Liu - Web page: https://patentgrep.com/patent/US10503327B2 ## CPC - G06F 3/0412: {Digitisers structurally integrated in a display} - G06F 3/04164: {Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads} - G06F 3/0446: {using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes} - H10K 59/8731: {multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers} - G06F 2203/04102: Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper - G06F 2203/04103: Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices - 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 - H10K 59/40: OLEDs integrated with touch screens - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract An organic light-emitting display panel and fabrication method thereof are provided. The organic light-emitting display panel includes an organic light-emitting element array substrate, a thin film encapsulation layer covering the organic light-emitting element array substrate, and touch-control electrodes. The thin film encapsulation layer includes at least one inorganic layer and at least one organic layer. First groove structures are configured in at least one organic layer, and sidewalls of the first groove structures are arc-shaped. The touch-control electrodes are disposed in the first groove structures. ## Claims ### Claim 1 An organic light-emitting display panel, comprising: an organic light-emitting element array substrate; a thin film encapsulation layer covering the organic light-emitting element array substrate; and a plurality of first touch-control electrodes and a plurality of second touch-control electrodes, wherein the thin film encapsulation layer includes at least one inorganic layer, a first organic layer and a second organic layer that are stacked, a first plurality of first groove structures and a second plurality of first groove structures are configured in the first organic layer and the second organic layer, respectively, sidewalls of the first and second plurality of first groove structures being arc-shaped, the plurality of first and second touch-control electrodes are disposed in the first and second plurality of first groove structures, respectively, and the first organic layer and the second organic layer each has a slope structure connected with the first and second plurality of first groove structures, respectively. ### Claim 2 (depends on 1) The organic light-emitting display panel according to claim 1, wherein: the thin film encapsulation layer includes a first inorganic layer, the first organic layer, and a second inorganic layer, and the first organic layer is sandwiched between the first inorganic layer and the second inorganic layer. ### Claim 3 (depends on 1) The organic light-emitting display panel according to claim 1, wherein: the organic light-emitting element array substrate includes a display region and a non-display region surrounding the display region, the first organic layer and the second organic layer configures the slope structures in the non-display region, and a plurality of touch-control lead wires are disposed in the slope structures, one ends of the plurality of touch-control lead wires are electrically connected to the plurality of first and second touch-control electrodes, respectively, and the other ends of the plurality of touch-control lead wires are electrically connected to a corresponding driving-chip interface or a flexible circuit board. ### Claim 4 (depends on 3) The organic light-emitting display panel according to claim 3, wherein: second groove structures are configured in at least one of the slope structures, sidewalls of the second groove structures are arc-shaped, and the plurality of touch-control lead wires are disposed in the second groove structures. ### Claim 5 (depends on 1) The organic light-emitting display panel according to claim 1, wherein: a depth of the first and second plurality of first groove structures is greater than a thickness of the plurality of first and second touch-control electrodes. ### Claim 6 (depends on 1) The organic light-emitting display panel according to claim 1, wherein: orthographic projections of the first and second plurality of first groove structures on the organic light-emitting element array substrate are in a grid pattern. ### Claim 7 (depends on 6) The organic light-emitting display panel according to claim 6, wherein: the organic light-emitting element array substrate includes a plurality of light-emitting units arranged in an array, spacer regions are disposed between the plurality of light-emitting units, and the vertical projections of the first and second plurality of first groove structures on the organic light-emitting element array substrate are located within the spacer regions. ### Claim 8 (depends on 7) The organic light-emitting display panel according to claim 7, wherein: a width of each groove in the first and second plurality of first groove structures is within a range of approximately 5-20 μm, and a distance between adjacent grooves in the first and second plurality of first groove structures is within a range of approximately 30-500 μm. ### Claim 9 A method for fabricating an organic light-emitting display panel, comprising: forming an organic light-emitting element array substrate; forming a thin film encapsulation layer on the organic light-emitting element array substrate, wherein forming the thin film encapsulation layer on the organic light-emitting element includes forming at least one inorganic layer, a first organic layer and a second organic layer that are stacked; configuring a first plurality of first groove structures and a second plurality of first groove structures in the first organic layer and the second organic layer, respectively, wherein sidewalls of the first groove structures are arc-shaped, and the first organic layer and the second organic layer each has a slope structure connected with the first and second plurality of first groove structures, respectively; and forming a plurality of first touch-control electrodes and a plurality of second touch-control electrodes in the first and second plurality of first groove structures, respectively. ### Claim 10 (depends on 9) The method according to claim 9, wherein forming the thin film encapsulation layer on the organic light-emitting element array substrate comprises: forming a first inorganic layer on the organic light-emitting element array substrate; forming the first organic layer with the first plurality of first groove structures on the first inorganic layer; forming the plurality of first touch-control electrodes in the first plurality of first groove structures of the first organic layer; and forming a second inorganic layer on the first organic layer and the plurality of first touch-control electrodes. ### Claim 11 (depends on 9) The method according to claim 9, wherein: the first organic layer with the first plurality of first groove structures is formed via an ink-jet printing process. ### Claim 12 (depends on 11) The method according to claim 11, wherein forming the first organic layer with the first groove structures via an ink-jet printing process comprises: configuring a preset print pattern; ejecting ink droplets according to the preset print pattern; and curing ejected ink droplets. ### Claim 13 (depends on 12) The method according to claim 12, wherein ejecting the ink droplets according to the preset print pattern further comprises: forming the first organic layer with the first plurality of first groove structures by controlling a moving path of at least one nozzle of an ink-jet printer and on-and-off of at least one nozzle according to the preset print pattern. ### Claim 14 (depends on 12) The method according to claim 12, wherein ejecting the ink droplets according to the preset print pattern further comprises: forming the first organic layer with the first plurality of first groove structures by controlling a moving path of the organic light-emitting element array substrate and on-and-off of at least one nozzle of the ink-jet printer according to the preset print pattern. ### Claim 15 (depends on 12) The method according to claim 12, wherein ejecting the ink droplets according to the preset print pattern further comprises: configuring the preset print pattern, and forming the first organic layer with the first plurality of first groove structures by controlling on-and-off of a plurality of nozzles arranged in an array according to the preset print pattern. ### Claim 16 (depends on 12) The method according to claim 12, wherein ejecting the ink droplets according to the preset print pattern further comprises: adjusting a distance between adjacent groove structures in the first and second plurality of first groove structures by controlling at least one of a size of the ejected ink droplet and a speed of the ejected ink droplets. ### Claim 17 (depends on 12) The method according to claim 12, wherein: curing the ejected ink droplets includes curing the ink droplets by controlling a temperature or applying an ultraviolet light. ### Claim 18 (depends on 9) The method according to claim 9, wherein: the first plurality of first groove structures are formed in the first organic layer via an etching process. ### Claim 19 (depends on 9) The method according to claim 9, wherein: forming the plurality of first touch-control electrodes in the first plurality of first groove structures includes forming the plurality of first touch-control electrodes in the first plurality of first groove structures via the ink-jet printing process or the etching process.