# US 11,442,680 B2 · Display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,442,680 B2 - Document ID: US11442680B2 - Status: Granted - Kind: B2 - Application number: 16/864,517 - Filed: 2020-05-01 - Published: 2021-05-13 - Granted: 2022-09-13 - Earliest claimed: 2019-11-07 - Assignees: Hefei Xinsheng Optoelectronics Technology Co., Ltd.; Beijing BOE Technology Development Co., Ltd. - Applicants: Hefei Xinsheng Optoelectronics Technology Co., Ltd.; Boe Technology Group Co., Ltd. - Inventors: Kaiwen Wang; Haifeng Xu; Hui Dong; Guangying Mou; Zhenyu Han; Xiaojun Wu - Web page: https://patentgrep.com/patent/US11442680B2 ## CPC - G02F 1/133308: {Support structures for LCD panels, e.g. frames or bezels} - G02F 1/13452: {Conductors connecting driver circuitry and terminals of panels} - G06F 3/14: Digital output to display device {; Cooperation and interconnection of the display device with other functional units} - G06F 3/147: using display panels - G09G 3/296: Driving circuits for producing the waveforms applied to the driving electrodes - H05K 1/0393: {Flexible materials (H05K1/038 takes precedence; specific organic compositions are classified in H05K1/0313 and subgroups)} - G02F 2201/50: Protective arrangements - H05K 2201/05: Flexible printed circuits [FPCs] - G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS ## Abstract A display device is provided, including: a display panel; a backlight module; a circuit board, arranged on a side of the backlight module facing away from the display panel; a flexible circuit board, connected to the circuit board and the display panel, where the flexible circuit board includes a bending portion arranged on a side of the backlight module and extending from the display panel to the circuit board; a circuit board protective frame, arranged around the circuit board and the flexible circuit board, where an opening is provided on a first portion of the circuit board protective frame, and the first portion is a portion of the circuit board protective frame facing the bending portion; and a buffer structure, fixed on the circuit board protective frame, arranged parallel to the circuit board protective frame, and covering the opening. ## Claims ### Claim 1 A display device, comprising: a display panel; a backlight module; a circuit board, arranged on a side of the backlight module facing away from the display panel; a flexible circuit board, connected to the circuit board and the display panel, wherein the flexible circuit board comprises a bending portion, and the bending portion is provided on a side of the backlight module and extends from the display panel to the circuit board; a circuit board protective frame, arranged around the circuit board and the flexible circuit board, wherein an opening is provided on a first portion of the circuit board protective frame, and the first portion is a portion of the circuit board protective frame facing the bending portion; and a buffer structure, fixed on the circuit board protective frame, arranged parallel to the circuit board protective frame, and covering the opening, wherein the buffer structure comprises a single-layer region and a double-layer region, an adhesive layer is provided on a surface of the single-layer region and is attached to and connected to a surface of the circuit board protective frame facing away from the flexible circuit board, and the double-layer region is formed by attaching two layers of single-layer regions and covers the opening. ### Claim 2 (depends on 1) The display device according to claim 1, wherein the buffer structure is an adhesive tape attached to a surface of the circuit board protective frame facing away from the flexible circuit board. ### Claim 3 (depends on 1) The display device according to claim 1, wherein the buffer structure comprises: an elastic support, and a flexible conductive layer on the elastic support. ### Claim 4 (depends on 3) The display device according to claim 3, wherein the elastic support is made of polyethylene terephthalate (PET) material. ### Claim 5 (depends on 3) The display device according to claim 3, wherein the flexible conductive layer comprises a flexible cloth material layer connected to the elastic support, and a conductive material layer is provided on a surface of the flexible cloth material layer facing away from the elastic support. ### Claim 6 (depends on 3) The display device according to claim 3, wherein a thickness of the elastic support ranges from 0.8 mm to 2 mm. ### Claim 7 (depends on 3) The display device according to claim 3, wherein a thickness of the flexible conductive layer ranges from 0.05 mm to 0.08 mm. ### Claim 8 (depends on 1) The display device according to claim 1, wherein the circuit board protective frame is provided with at least two openings separated from each other, and the buffer structure as an integral structure, is fixed on the circuit board protective frame and covers each of the at least two openings. ### Claim 9 (depends on 1) The display device according to claim 1, wherein an orthographic projection of the buffer structure and the circuit board protective frame onto a display surface of the display panel is located in a border region of the display panel. ### Claim 10 (depends on 9) The display device according to claim 9, wherein the opening is located at an edge of the circuit board protective frame close to the display panel, a portion of the buffer structure extends to a surface where the flexible circuit is connected to the display panel, and the portion covers the opening. ### Claim 11 (depends on 1) The display device according to claim 1, wherein the opening is located at an edge of the circuit board protective frame close to the display panel, a portion of the buffer structure extends to a surface where the flexible circuit is connected to the display panel, and the portion covers the opening. ### Claim 12 (depends on 1) The display device according to claim 1, wherein the flexible circuit board comprises a first connection region connected to the display panel, a portion where the bending portion is connected to the first connection region is an inclined region, and the inclined region is inclined relative to the display panel and a vertical surface of the display panel. ### Claim 13 (depends on 12) The display device according to claim 12, wherein the buffer structure is an adhesive tape attached to a surface of the circuit board protective frame facing away from the flexible circuit board. ### Claim 14 (depends on 12) The display device according to claim 12, wherein the buffer structure comprises: an elastic support, and a flexible conductive layer on the elastic support. ### Claim 15 (depends on 14) The display device according to claim 14, wherein the flexible conductive layer comprises a flexible cloth material layer connected to the elastic support, and a conductive material layer is provided on a surface of the flexible cloth material layer facing away from the elastic support. ### Claim 16 (depends on 12) The display device according to claim 12, wherein an orthographic projection of the buffer structure and the circuit board protective frame onto a display surface of the display panel is located in a border region of the display panel. ### Claim 17 (depends on 1) The display device according to claim 1, wherein the display panel comprises an array substrate and a color filter substrate, the array substrate is on a light exiting side of the color filter substrate, the array substrate comprises a protruding portion protruding relative to the color filter substrate, and the flexible circuit board is fixedly connected to the protruding portion. ### Claim 18 (depends on 17) The display device according to claim 17, wherein an orthographic projection of the buffer structure and the circuit board protective frame onto a plane where the display panel is located is within an orthographic projection of the protruding portion onto the plane.