# US 12,015,133 B2 · Flexible display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,015,133 B2 - Document ID: US12015133B2 - Status: Granted - Kind: B2 - Application number: 17/435,124 - Filed: 2021-04-09 - Published: 2022-05-26 - Granted: 2024-06-18 - Earliest claimed: 2020-05-25 - Assignees: Boe Technology Group Co., Ltd. - Applicants: Boe Technology Group Co., Ltd. - Inventors: Haoran Wang; Xiaolin Liu; Hong Zhu; Xiongnan Zhang; Ziyu Zhang - Web page: https://patentgrep.com/patent/US12015133B2 ## CPC - G09F 9/301: {flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED} - G06F 1/1635: {Details related to the integration of battery packs and other power supplies such as fuel cells or integrated AC adapter} - G06F 1/1637: {Details related to the display arrangement, including those related to the mounting of the display in the housing} - G06F 1/1641: {the display being formed by a plurality of foldable display components (G06F1/1647 takes precedence)} - G06F 1/1652: {the display being flexible, e.g. mimicking a sheet of paper, or rollable} - G06F 1/203: {for portable computers, e.g. for laptops} - H01M 10/613: Cooling or keeping cold - H01M 10/623: Portable devices, e.g. mobile telephones, cameras or pacemakers - H01M 10/647: Prismatic or flat cells, e.g. pouch cells - H01M 10/6551: Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings - H01M 10/658: by thermal insulation or shielding - H01M 50/105: Pouches or flexible bags - H01M 50/136: Flexibility or foldability - H10K 59/8794: {Arrangements for heating and cooling} - H10K 77/111: {Flexible substrates} - H01M 2220/30: Batteries in portable systems, e.g. mobile phone, laptop - H10K 2102/311: {Flexible OLED} - Y02E 10/549: Organic PV cells - Y02E 60/10: Energy storage using batteries - G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A flexible display device is described, including: a flexible display panel; a flexible battery arranged at a side of the flexible display panel away from a light emitting surface; and a heat dissipation assembly including a first heat dissipation sheet, the first heat dissipation sheet being arranged at a side of the flexible battery facing or away from the flexible display panel, and the first heat dissipation sheet having a bendable area. ## Claims ### Claim 1 A flexible display device, comprising: a flexible display panel; a flexible battery arranged at a side of the flexible display panel away from a light emitting surface; and a heat dissipation assembly comprising a first heat dissipation sheet, the first heat dissipation sheet being arranged at a side of the flexible battery facing toward or away from the flexible display panel, and the first heat dissipation sheet having a bendable area, wherein the bendable area of the first heat dissipation sheet has a through structure in a thickness direction, and wherein the first heat dissipation sheet comprises a plurality of heat dissipation bars arranged in parallel in the bendable area, any two adjacent heat dissipation bars have an interval therebetween, and the interval forms the through structure. ### Claim 2 (depends on 1) The flexible display device according to claim 1, wherein: the first heat dissipation sheet further comprises a plurality of connection members, and each of the plurality of connection members connects two adjacent heat dissipation bars, and each of the plurality of connection members is pivotally connected to the two adjacent heat dissipation bars, so that the two adjacent heat dissipation bars are rotatable relative to the connection member. ### Claim 3 (depends on 1) The flexible display device according to claim 1, wherein at least one first protruding portion is provided on at least one long side of each of the plurality of heat dissipation bars and faces an adjacent heat dissipation bar. ### Claim 4 (depends on 3) The flexible display device according to claim 3, wherein a second protruding portion is provided on a long side of a heat dissipation bar at a position corresponding to a first protruding portion of an adjacent heat dissipation bar, the second protruding portion has a notch that matches a shape of the first protruding portion, and the notch and the first protruding portion are configured to be fit to each other. ### Claim 5 (depends on 1) The flexible display device according to claim 1, wherein the first heat dissipation sheet further comprises a heat dissipation pipe, and the heat dissipation pipe is connected to each of the plurality of heat dissipation bars. ### Claim 6 (depends on 1) The flexible display device according to claim 1, wherein the first heat dissipation sheet further comprises a base layer, the plurality of heat dissipation bars are adhered to one side of the base layer, and another side of the base layer is bonded to the flexible battery or the flexible display panel. ### Claim 7 (depends on 1) The flexible display device according to claim 1, wherein a width L of each of the plurality of heat dissipation bars satisfies 0.05 mm≤L≤20 mm, and a width h of the interval between two adjacent heat dissipation bars satisfies 0.1 mm≤h≤10 mm. ### Claim 8 (depends on 1) The flexible display device according to claim 1, wherein a through hole is formed in each of the plurality of heat dissipation bars. ### Claim 9 (depends on 1) The flexible display device according to claim 1, wherein a material of the first heat dissipation sheet is metal. ### Claim 10 (depends on 1) The flexible display device according to claim 1, wherein the heat dissipation assembly further comprises: a second heat dissipation sheet arranged on another side of the flexible battery facing toward or away from the flexible display panel, the second heat dissipation sheet having a bendable area, and the bending area of the second heat dissipation sheet corresponding to the bendable area of the first heat dissipation sheet. ### Claim 11 (depends on 10) The flexible display device according to claim 10, wherein a structure of the second heat dissipation sheet is same as or different from that of the first heat dissipation sheet, and a material of the second heat dissipation sheet is same as or different from that of the first heat dissipation sheet. ### Claim 12 (depends on 10) The flexible display device according to claim 10, wherein the heat dissipation assembly further comprises: a heat insulation layer arranged between one of the first heat dissipation sheet and the second heat dissipation sheet close to the flexible display panel and the flexible display panel, and having a bendable area corresponding to the bendable area of the first heat dissipation sheet. ### Claim 13 (depends on 12) The flexible display device according to claim 12, wherein the heat insulation layer comprises a material of rubber, silica gel, porous material, polyurethane, acrylic, or an organic film layer containing a metal coating. ### Claim 14 (depends on 12) The flexible display device according to claim 12, wherein thicknesses of the first heat dissipation sheet, the heat insulation layer and the second heat dissipation sheet are not larger than 1 mm. ### Claim 15 (depends on 12) The flexible display device according to claim 12, wherein the heat dissipation assembly further comprises: a heat conduction member arranged between the first heat dissipation sheet and the second heat dissipation sheet and connecting the first heat dissipation sheet and the second heat dissipation sheet, the heat conduction member being located on at least one side of the flexible battery and there being an interval between the heat conduction member and the flexible battery. ### Claim 16 (depends on 15) The flexible display device according to claim 15, wherein the flexible display device further comprises: a heat dissipation unit connected to at least one of the first heat dissipation sheet, the second heat dissipation sheet or the heat conduction member. ### Claim 17 (depends on 1) The flexible display device according to claim 1, wherein; the flexible battery comprises a flexible housing and a positive electrode, a negative electrode, an electrolyte, a separator, a positive current collector, and a negative current collector arranged in the flexible housing, the positive electrode and the negative electrode are arranged opposite to each other, the separator is arranged between the positive electrode and the negative electrode, the positive current collector is arranged on a side of the positive electrode away from the insulation layer, the negative current collector is arranged on a side of the negative electrode away from the insulation layer, and the electrolyte is distributed between the positive electrode and the negative electrode.