# US 11,309,520 B2 · Encapsulation structure, and display apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,309,520 B2 - Document ID: US11309520B2 - Status: Granted - Kind: B2 - Application number: 16/633,892 - Filed: 2019-04-10 - Published: 2021-04-29 - Granted: 2022-04-19 - Earliest claimed: 2018-04-17 - 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: Tingliang Liu; Yunsheng Xiao; Xiangdan Dong; Yue Long; Kai Zhang; Yonglin Guo; Hongwei Ma - Web page: https://patentgrep.com/patent/US11309520B2 ## CPC - H10K 59/8731: {multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers} - H10K 59/871: {Self-supporting sealing arrangements} - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract An encapsulation structure includes a first inorganic layer, a first organic layer and a second inorganic layer, all of which are sequentially stacked in a thickness direction of the encapsulation structure. At least one of the first inorganic layer or the second inorganic layer is a crack-resistant layer. ## Claims ### Claim 1 An encapsulation structure, comprising a first inorganic layer, a first organic layer and a second inorganic layer, all of which are sequentially stacked in a thickness direction of the encapsulation structure, wherein at least one of the first inorganic layer or the second inorganic layer is a crack-resistant layer; the crack-resistant layer includes at least one through hole therein, and the at least one through hole passes through the crack-resistant layer in the thickness direction of the encapsulation structure; the crack-resistant layer further includes a plurality of inorganic pattern units sequentially arranged in a direction from an inside to an outside of the crack-resistant layer; a gap is provided between two adjacent inorganic pattern units, and the gap is a through hole; or, the crack-resistant layer further includes a plurality of inorganic pattern units arranged concentrically; a gap is provided between two adjacent inorganic pattern units, and the gap is a through hole; in any crack-resistant layer, an inorganic pattern unit located at a center of the crack-resistant layer is a rectangular block, and at least one remaining inorganic pattern unit is a rectangular loop block. ### Claim 2 (depends on 1) The encapsulation structure according to claim 1, wherein both the first inorganic layer and the second inorganic layer are crack-resistant layers; and at least one orthographic projection of at least one gap in the first inorganic layer on a plane where the encapsulation structure is located and at least one orthographic projection of at least one gap in the second inorganic layer on the plane where the encapsulation structure is located are staggered. ### Claim 3 (depends on 1) The encapsulation structure according to claim 1, further comprising at least one encapsulation group disposed on a side of the second inorganic layer away from the first inorganic layer, wherein each encapsulation group includes a second organic layer and a third inorganic layer that are sequentially stacked in a direction from the first inorganic layer to the second inorganic layer; and the third inorganic layer is the crack-resistant layer. ### Claim 4 (depends on 1) The encapsulation structure according to claim 1, wherein a width of the gap is in a range of 50 μm to 200 μm. ### Claim 5 (depends on 1) The encapsulation structure according to claim 1, wherein the second inorganic layer is the crack-resistant layer, and a surface of the first organic layer adjacent to the first inorganic layer covers a surface of the first inorganic layer adjacent to the first organic layer and side faces connected to the surface of the first inorganic layer adjacent to the first organic layer. ### Claim 6 (depends on 5) The encapsulation structure according to claim 5, wherein at least one orthographic projection of at least one gap in the crack-resistant layer on a plane where the first inorganic layer is located is within a range of the first inorganic layer. ### Claim 7 (depends on 1) The encapsulation structure according to claim 1, wherein the second inorganic layer is the crack-resistant layer, and a surface of the second inorganic layer adjacent to the first organic layer covers a surface of the first organic layer adjacent to the second inorganic layer and at least covers side faces of the first organic layer connected to the surface of the first organic layer adjacent to the second inorganic layer. ### Claim 8 (depends on 7) The encapsulation structure according to claim 7, wherein at least one orthographic projection of at least one gap in the crack-resistant layer on a plane where the first inorganic layer is located is within a range of the first inorganic layer. ### Claim 9 (depends on 1) A display apparatus, comprising: a substrate provided with at least one organic light-emitting diode (OLED) device, and an encapsulation structure for encapsulating at least one OLED device according to claim 1. ### Claim 10 (depends on 9) The display apparatus according to claim 9, wherein the substrate includes a display area and a non-display area located at a periphery of the display area; the encapsulation structure includes a first region, and a second region surrounding the first region; a contour of an orthographic projection of the first region on a plane where the encapsulation structure is located surrounds a contour of an orthographic projection of the display area on the plane where the encapsulation structure is located; and in the plurality of inorganic pattern units of any crack-resistant layer, a contour of an orthographic projection of an inorganic pattern unit located at a center of the crack-resistant layer on a plane where the inorganic pattern unit is located surrounds a contour of an orthographic projection of the first region on the plane where the inorganic pattern unit is located. ### Claim 11 (depends on 9) The display apparatus according to claim 9, wherein the second inorganic layer is the crack-resistant layer, a surface of the first organic layer adjacent to the first inorganic layer covers a surface of the first inorganic layer adjacent to the first organic layer and side faces connected to the surface of the first inorganic layer adjacent to the first organic layer, and a surface of the second inorganic layer adjacent to the first organic layer covers a surface of the first organic layer adjacent to the second inorganic layer and at least covers side faces of the first organic layer connected to the surface of the first organic layer adjacent to the second inorganic layer. ### Claim 12 (depends on 11) The display apparatus according to claim 11, wherein a distance from an edge of an orthographic projection of the first inorganic layer on a plane where the first inorganic layer is located to an edge of an orthographic projection of the first region on the plane where the first inorganic layer is located is in a range of 100 μm to 200 μm; or a distance from an edge of an orthographic projection of the second inorganic layer on a plane where the second inorganic layer is located to an edge of an orthographic projection of the first region on the plane where the second inorganic layer is located is in a range of 400 μm to 600 μm; or a distance from an edge of an orthographic projection of the first inorganic layer on a plane where the first inorganic layer is located to an edge of an orthographic projection of the first region on the plane where the first inorganic layer is located is in a range of 100 μm to 200 μm, and a distance from an edge of an orthographic projection of the second inorganic layer on a plane where the second inorganic layer is located to an edge of an orthographic projection of the first region on the plane where the second inorganic layer is located is in a range of 400 μm to 600 μm. ### Claim 13 (depends on 1) The encapsulation structure according to claim 1, wherein a thickness of the first organic layer is greater than a thickness of any of the first inorganic layer and the second inorganic layer.