# US 11,910,638 B2 · Display panel and manufacturing method thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,910,638 B2 - Document ID: US11910638B2 - Status: Granted - Kind: B2 - Application number: 16/965,372 - Filed: 2020-02-12 - Published: 2023-05-25 - Granted: 2024-02-20 - Earliest claimed: 2019-12-26 - Assignees: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. - Applicants: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. - Inventors: Tianfu Guo; Hsianglun Hsu - Web page: https://patentgrep.com/patent/US11910638B2 ## CPC - H10K 50/844: Encapsulations - H10K 59/873: {Encapsulations} - H10K 50/8426: {Peripheral sealing arrangements, e.g. adhesives, sealants} - H10K 71/00: Manufacture or treatment specially adapted for the organic devices covered by this subclass - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract A display panel and a manufacturing method thereof are provided. The display panel includes an array substrate, a light emitting device layer, and an encapsulation layer. The encapsulation layer includes at least one first adhesive layer, and an orthographic projection of the at least one first adhesive layer on the array substrate is positioned in the array substrate. ## Claims ### Claim 1 A display panel, comprising: an array substrate; a light emitting device layer disposed on the array substrate; and an encapsulation layer disposed on the light emitting device layer; wherein the encapsulation layer comprises at least one first adhesive layer, and an orthographic projection of the at least one first adhesive layer on the array substrate is positioned in the array substrate; wherein the at least one first adhesive layer is disposed between the first inorganic layer and the first organic layer; wherein the at least one first adhesive layer extends from a surface of the first inorganic layer to the edge of the display panel and covers an area of the array substrate not covered by the encapsulation layer. ### Claim 2 (depends on 1) The display panel according to claim 1, wherein the encapsulation layer comprises a first inorganic layer disposed on the light emitting device layer and the array substrate; the at least one first adhesive layer is disposed between the array substrate and the first inorganic layer and between the light emitting device layer and the first inorganic layer. ### Claim 3 (depends on 1) The display panel according to claim 1, wherein: the at least one first adhesive layer is disposed on a side of the encapsulation layer away from the array substrate. ### Claim 4 (depends on 1) The display panel according to claim 1, wherein: the encapsulation layer comprises a first inorganic layer, a first organic layer disposed on the first inorganic layer, and a second inorganic layer disposed on the first organic layer; wherein the at least one first adhesive layer is disposed in an inside of the encapsulation layer, and the at least one first adhesive layer extends from the inside of the encapsulation layer to an edge of the display panel. ### Claim 5 (depends on 4) The display panel according to claim 4, wherein: the at least one first adhesive layer is disposed inside at least one of the first inorganic layer, the first organic layer, or the second inorganic layer; the at least one first adhesive layer extends from the inside of at least one of the first inorganic layer, the first organic layer, or the second inorganic layer to the edge of the display panel and covers an area of the array substrate not covered by the encapsulation layer. ### Claim 6 (depends on 1) The display panel according to claim 1, wherein: the encapsulation layer further comprises at least one second adhesive layer; the at least one second adhesive layer is disposed on any film layer on the array substrate; the at least one second adhesive layer and the at least one first adhesive layer are not disposed on a same layer; the at least one second adhesive layer extends from a film layer on the array substrate toward the edge of the display panel and overlaps with the at least one first adhesive layer. ### Claim 7 (depends on 6) The display panel according to claim 6, wherein: material of the at least one first adhesive layer and material of the at least one second adhesive layer comprise at least one of aluminum oxide, silicon dioxide, titanium dioxide, silicon nitride, or zirconium dioxide. ### Claim 8 (depends on 1) The display panel according to claim 1, wherein: a distance between the at least one first adhesive layer and a boundary of the display panel is less than a distance between the encapsulation layer and the boundary of the display panel. ### Claim 9 A method of manufacturing a display panel, comprising: providing an array substrate; forming a light emitting device layer on the array substrate; and forming an encapsulation layer on the light emitting device layer; wherein a step of forming the encapsulation layer on the light emitting device layer comprises: forming at least one first adhesive layer on the light emitting device layer; wherein an orthographic projection of the at least one first adhesive layer on the array substrate is positioned in the array substrate; wherein the step of forming the encapsulation layer on the light emitting device layer comprises: forming the first inorganic layer on the light emitting device layer; forming the at least one first adhesive layer on the first inorganic layer; forming the first organic layer on the at least one first adhesive layer; forming the second inorganic layer on the first organic layer; wherein the at least one first adhesive layer extends from a surface of the first inorganic layer to the edge of the display panel and covers an area of the array substrate not covered by the encapsulation layer. ### Claim 10 (depends on 9) The method of manufacturing the display panel according to claim 9, wherein the step of forming the encapsulation layer on the light emitting device layer comprises: forming the at least one first adhesive layer on the light emitting device layer and the array substrate not covered by the light emitting device layer; forming a first inorganic layer on the at least one first adhesive layer; wherein the at least one first adhesive layer is disposed between the array substrate and the first inorganic layer and between the light emitting device layer and the first inorganic layer. ### Claim 11 (depends on 9) The method of manufacturing the display panel according to claim 9, wherein a step of forming the at least one first adhesive layer on the light emitting device layer comprises: forming the at least one first adhesive layer on the light emitting device layer; wherein the at least one first adhesive layer is disposed on a side of the encapsulation layer away from the array substrate. ### Claim 12 (depends on 9) The method of manufacturing the display panel according to claim 9, wherein the step of forming the encapsulation layer on the light emitting device layer comprises: forming a first inorganic layer on the light emitting device layer; forming a first organic layer on the first inorganic layer; forming a second inorganic layer on the first organic layer; wherein the at least one first adhesive layer is disposed in an inside of the encapsulation layer, and the at least one first adhesive layer extends from the inside of the encapsulation layer to an edge of the display panel. ### Claim 13 (depends on 12) The method of manufacturing the display panel according to claim 12, wherein a step of forming the at least one first adhesive layer on the light emitting device layer comprises: forming the at least one first adhesive layer inside at least one of the first inorganic layer, the first organic layer, or the second inorganic layer; wherein the at least one first adhesive layer extends from the inside of at least one of the first inorganic layer, the first organic layer, or the second inorganic layer to the edge of the display panel and covers an area of the array substrate not covered by the encapsulation layer. ### Claim 14 (depends on 9) The method of manufacturing the display panel according to claim 9, wherein the step of forming the encapsulation layer on the light emitting device layer comprises: forming at least one second adhesive layer on the light emitting device layer; wherein the at least one second adhesive layer is disposed on any film layer on the array substrate, the at least one second adhesive layer and the at least one first adhesive layer are not disposed on a same layer; wherein the at least one second adhesive layer extends from a film layer on the array substrate toward the edge of the display panel and overlaps with the at least one first adhesive layer. ### Claim 15 (depends on 14) The method of manufacturing the display panel according to claim 14, wherein the at least one first adhesive layer and the at least one second adhesive layer are formed by atomic layer deposition; material of the at least one first adhesive layer and material of the at least one second adhesive layer comprise at least one of aluminum oxide, silicon dioxide, titanium dioxide, silicon nitride, or zirconium dioxide. ### Claim 16 (depends on 9) The method of manufacturing the display panel according to claim 9, wherein a distance between the at least one first adhesive layer and a boundary of the display panel is less than a distance between the encapsulation layer and the boundary of the display panel. ### Claim 17 A display panel, comprising: an array substrate; a light emitting device layer disposed on the array substrate; and an encapsulation layer disposed on the light emitting device layer; wherein the encapsulation layer comprises at least one first adhesive layer, and an orthographic projection of the at least one first adhesive layer on the array substrate is positioned in the array substrate; wherein: the encapsulation layer further comprises at least one second adhesive layer; the at least one second adhesive layer is disposed on any film layer on the array substrate; the at least one second adhesive layer and the at least one first adhesive layer are not disposed on a same layer; the at least one second adhesive layer extends from a film layer on the array substrate toward the edge of the display panel and overlaps with the at least one first adhesive layer. ### Claim 18 (depends on 17) The display panel according to claim 17, wherein: material of the at least one first adhesive layer and material of the at least one second adhesive layer comprise at least one of aluminum oxide, silicon dioxide, titanium dioxide, silicon nitride, or zirconium dioxide. ### Claim 19 (depends on 17) The display panel according to claim 17, wherein the encapsulation layer comprises a first inorganic layer disposed on the light emitting device layer and the array substrate; the at least one first adhesive layer is disposed between the array substrate and the first inorganic layer and between the light emitting device layer and the first inorganic layer. ### Claim 20 (depends on 17) The display panel according to claim 17, wherein: the at least one first adhesive layer is disposed on a side of the encapsulation layer away from the array substrate.