# US 12,004,388 B2 · Flexible display panel 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 12,004,388 B2 - Document ID: US12004388B2 - Status: Granted - Kind: B2 - Application number: 17/264,859 - Filed: 2020-10-23 - Published: 2022-12-15 - Granted: 2024-06-04 - Earliest claimed: 2020-08-20 - Applicants: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. - Inventors: Yong Chen - Web page: https://patentgrep.com/patent/US12004388B2 ## CPC - H10K 59/131: Interconnections, e.g. wiring lines or terminals - H10K 59/8731: {multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers} - H10K 59/875: {Arrangements for extracting light from the devices} - H10K 77/111: {Flexible substrates} - H10K 2102/311: {Flexible OLED} - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract A flexible display panel and a display device are disclosed. An opening hole is defined in a corner splicing section of the flexible display panel and is filled with a splicing element formed by filling a light guide material, and a light guide layer is disposed on one side of a display surface of the flexible display panel at a same time. Therefore, the flexible display panel and the display device of the present disclosure can prevent wrinkle phenomena and realize normal light emission in the corner splicing section. ## Claims ### Claim 1 A flexible display panel, having a display area comprising a planar section and at least one corner splicing section positioned in a periphery of the planar section, wherein the corner splicing section surrounds a corner of the planar section; wherein the display area further comprises a first curved section and a second curved section positioned in the periphery of the planar section, and the first curved section and the second curved section are positioned on sides of the corner; the corner splicing section comprises a first splicing subsection, a second splicing subsection, and an opening hole penetrating through upper and lower surfaces of the flexible display panel, wherein the opening hole passes through the corner splicing section along a direction away from the planar section and is filled with a splicing element formed by a light guide material, the first splicing subsection is positioned between the first curved section and the splicing element and connected to the first curved section, and the second splicing subsection is positioned between the second curved section and the splicing element and connected to the second curved section; and the flexible display panel comprises an array substrate, a plurality of light-emitting devices, and a light guide layer, wherein the light guide layer is disposed on one side of the array substrate facing a display surface of the flexible display panel and covers the display area, and the light-emitting devices are disposed on a surface of the array substrate facing the light guide layer and positioned in the display area excluding the corner splicing section. ### Claim 2 (depends on 1) The flexible display panel according to claim 1, wherein the first splicing subsection is provided with VSS wirings, and the second splicing subsection is provided with the VSS wirings and gate driver on array (GOA) wirings. ### Claim 3 (depends on 1) The flexible display panel according to claim 1, further comprising a first bezel area and a second bezel area; wherein the first bezel area is positioned on one side of the first curved section away from the planar section and provided with VSS wirings and gate driver on array (GOA) wirings; and the second bezel area is positioned on one side of the second curved section away from the planar section and provided with the VSS wirings. ### Claim 4 A flexible display panel, having a display area comprising a planar section and at least one corner splicing section positioned in a periphery of the planar section, wherein the corner splicing section surrounds a corner of the planar section; wherein the corner splicing section is provided with an opening hole penetrating through upper and lower surfaces of the flexible display panel, and the opening hole passes through the corner splicing section along a direction away from the planar section and is filled with a splicing element formed by a light guide material; and the flexible display panel further comprises a light guide layer disposed on one side of a display surface of the flexible display panel and covering the display area. ### Claim 5 (depends on 4) The flexible display panel according to claim 4, comprising an array substrate and a plurality of light-emitting devices disposed on a surface of the array substrate facing the light guide layer; wherein the light-emitting devices are disposed in the display area excluding the corner splicing section. ### Claim 6 (depends on 4) The flexible display panel according to claim 4, wherein the display area further comprises a first curved section and a second curved section positioned in the periphery of the planar section, and the first curved section and the second curved section are positioned on sides of the corner and respectively connected to the corner splicing section. ### Claim 7 (depends on 6) The flexible display panel according to claim 6, wherein the corner splicing section further comprises a first splicing subsection and a second splicing subsection, the first splicing subsection is positioned between the first curved section and the splicing element and connected to the first curved section, and the second splicing subsection is positioned between the second curved section and the splicing element and connected to the second curved section. ### Claim 8 (depends on 7) The flexible display panel according to claim 7, wherein the first splicing subsection is provided with VSS wirings, and the second splicing subsection is provided with the VSS wirings and gate driver on array (GOA) wirings. ### Claim 9 (depends on 6) The flexible display panel according to claim 6, further comprising a first bezel area and a second bezel area; wherein the first bezel area is positioned on one side of the first curved section away from the planar section and provided with VSS wirings and gate driver on array (GOA) wirings; and the second bezel area is positioned on one side of the second curved section away from the planar section and provided with the VSS wirings. ### Claim 10 A display device, comprising a flexible display panel having a display area, wherein the display area comprises a planar section and at least one corner splicing section positioned in a periphery of the planar section, and the corner splicing section surrounds a corner of the planar section; wherein the corner splicing section is provided with an opening hole penetrating through upper and lower surfaces of the flexible display panel, and the opening hole passes through the corner splicing section along a direction away from the planar section and is filled with a splicing element formed by a light guide material; and the flexible display panel further comprises a light guide layer disposed on one side of a display surface of the flexible display panel and covering the display area. ### Claim 11 (depends on 10) The display device according to claim 10, wherein the flexible display panel comprises an array substrate and a plurality of light-emitting devices disposed on a surface of the array substrate facing the light guide layer; and the light-emitting devices are disposed in the display area excluding the corner splicing section. ### Claim 12 (depends on 10) The display device according to claim 10, wherein the display area further comprises a first curved section and a second curved section positioned in the periphery of the planar section, and the first curved section and the second curved section are positioned on sides of the corner and respectively connected to the corner splicing section. ### Claim 13 (depends on 12) The display device according to claim 12, wherein the corner splicing section further comprises a first splicing subsection and a second splicing subsection, the first splicing subsection is positioned between the first curved section and the splicing element and connected to the first curved section, and the second splicing subsection is positioned between the second curved section and the splicing element and connected to the second curved section. ### Claim 14 (depends on 13) The display device according to claim 13, wherein the first splicing subsection is provided with VSS wirings, and the second splicing subsection is provided with the VSS wirings and gate driver on array (GOA) wirings. ### Claim 15 (depends on 12) The display device according to claim 12, wherein the flexible display panel further comprises a first bezel area and a second bezel area; the first bezel area is positioned on one side of the first curved section away from the planar section and provided with VSS wirings and gate driver on array (GOA) wirings; and the second bezel area is positioned on one side of the second curved section away from the planar section and provided with the VSS wirings. ### Claim 16 (depends on 10) The display device according to claim 10, further comprising a bonded substrate disposed on one side of the display panel facing away from the display surface and matching a shape of the flexible display panel; wherein the splicing element is in contact with a surface of the bonded substrate. ### Claim 17 (depends on 10) The display device according to claim 10, further comprising a cover plate disposed on one side of the light guide layer facing away from the flexible display panel and matching a shape of the flexible display panel. ### Claim 18 (depends on 17) The display device according to claim 17, further comprising a first optical adhesive layer disposed between the light guide layer and the cover plate and covering the light guide layer. ### Claim 19 (depends on 18) The display device according to claim 18, further comprising a touch control functional layer disposed between the first optical adhesive layer and the cover plate and covering the first optical adhesive layer. ### Claim 20 (depends on 19) The display device according to claim 19, further comprising a polarizing layer disposed between the touch control functional layer and the cover plate and covering the touch control functional layer.