# US 2019/0244976 A1 · Flexible array substrate, flexible display device and method of assembling the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0244976 A1 - Document ID: US20190244976A1 - Status: Published application - Kind: A1 - Application number: 16/262,240 - Filed: 2019-01-30 - Published: 2019-08-08 - Earliest claimed: 2018-02-02 - 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: Xiaolong ZHU - Web page: https://patentgrep.com/patent/US20190244976A1 ## CPC - H10K 59/179: Interconnections, e.g. wiring lines or terminals - H10D 86/411: {characterised by materials, geometry or structure of the substrates} - H10D 86/441: {Interconnections, e.g. scanning lines} - H10D 86/60: wherein the TFTs are in active matrices - H10K 59/131: Interconnections, e.g. wiring lines or terminals - H10K 77/111: {Flexible substrates} - H10K 2102/311: {Flexible OLED} - Y02E 10/549: Organic PV cells - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A flexible array substrate has a main display area, and includes a flexible substrate and a plurality of signal connecting portions. The flexible substrate includes at least one bent portion extending from at least one side of the main display area. The plurality of signal connecting portions are disposed at a side of the at least one bent portion away from the main display area. A plurality of signal lines are disposed on a first surface of the flexible substrate in the main display area. The plurality of signal connecting portions are configured to electrically connect the plurality of signal lines to at least one driving circuit. The at least one bent portion is configured to bend toward a second surface of the flexible substrate opposite to the first surface. ## Claims ### Claim 1 A flexible array substrate, having a main display area, the flexible array substrate comprising: a flexible substrate comprising at least one bent portion extending from at least one side of the main display area, and a plurality of signal connecting portions disposed at a side of the at least one bent portion away from the main display area, wherein a plurality of signal lines are disposed on a first surface of the flexible substrate in the main display area and the plurality of signal connecting portions are configured to electrically connect the plurality of signal lines to at least one driving circuit, and the at least one bent portion is configured to bend toward a second surface of the flexible substrate opposite to the first surface to move the plurality of signal connecting portions to a back side of the main display area away from the first surface. ### Claim 2 (depends on 1) The flexible array substrate according to claim 1, wherein the plurality of signal lines comprise a plurality of gate lines and a plurality of data lines crossing each other, the plurality of signal connecting portions comprise a plurality of data connecting portions and/or a plurality of gate connecting portions, and the at least one driving circuit includes at least one source driving circuit and at least one gate driving circuit; the plurality of data connecting portions are configured to electrically connect the plurality of data lines to the at least one source driving circuit, and/or the plurality of gate connecting portions are configured to electrically connect the plurality of gate lines to the at least one gate driving circuit. ### Claim 3 (depends on 2) The flexible array substrate according to claim 2, further comprising a plurality of data line leads and/or a plurality of gate line leads disposed on the first surface of the flexible substrate, wherein the plurality of data connecting portions are configured to respectively electrically connected to the plurality of data lines through the plurality of data line leads, and/or the plurality of gate connecting portions are configured to respectively electrically connected to the plurality of gate lines through the plurality of gate line leads. ### Claim 4 (depends on 3) The flexible array substrate according to claim 3, wherein the main display area is polygonal in shape, the at least one bent portion includes two bent portions which respectively extend from a pair of opposite sides of the main display area, and the plurality of signal connecting portions are located at the pair of opposite sides of the main display area. ### Claim 5 (depends on 3) The flexible array substrate according to claim 3, wherein the main display area is polygonal in shape, the plurality of gate connecting portions and the plurality of data connecting portions are located at at least one of a pair of opposite sides of the main display area, and the plurality of gate lines pass through the main display area and extend to the at least one bent portion. ### Claim 6 (depends on 5) The flexible array substrate according to claim 5, wherein each of the plurality of data line leads comprises a lead body located in the main display area, and/or an edge lead located between the main display area and the plurality of data connecting portions; one end of the lead body is connected to a corresponding one of the plurality of data lines in the main display area, and another end of the lead body is connected to a corresponding one of the plurality of data connecting portions through the edge lead. ### Claim 7 (depends on 3) The flexible array substrate according to claim 3, wherein the main display area is substantially rectangular, and the main display area has a pair of opposite long sides and a pair of opposite short sides, and the flexible array substrate comprises a pair of opposite long edges and a pair of opposite short edges; the at least one bent portion is located on at least one of the pair of opposite long edges of the flexible array substrate, and the flexible array substrate is not provided with a bent portion on the pair of opposite short edges. ### Claim 8 (depends on 4) The flexible array substrate according to claim 4, wherein a portion of the flexible substrate within the main display area includes a main portion and at least one curved portion each located between the main portion and a corresponding one of the at least one bent portion. ### Claim 9 (depends on 8) The flexible array substrate according to claim 8, wherein the at least one bent portion and the at least one curved portion are configured to be bent; the main portion is flat; a boundary away from the main portion in boundaries of an orthographic projection of each of the at least one bent portion on a plane parallel to the main portion is a first boundary; a boundary away from the main portion in boundaries of an orthographic projection of a corresponding one of the at least one curved portion on a plane parallel to the main portion is a second boundary; the first boundary and the second boundary are located outside the main portion and located at a same side of the main portion; the first boundary and the second boundary overlap substantially. ### Claim 10 (depends on 1) The flexible array substrate according to claim 1, wherein each of the at least one bent portion comprises at least one groove formed in the first surface and at least one filler each of which filled in a corresponding one of the at least one groove, a flexibility of the at least one filler is higher than a flexibility of the at least one bent portion. ### Claim 11 (depends on 1) A flexible display device, comprising: the flexible array substrate according to claim 1; and at least one driving circuit electrically connected to the plurality of signal connecting portions in the flexible array substrate. ### Claim 12 (depends on 11) The flexible display device according to claim 11, wherein the plurality of signal connecting portions comprise a plurality of data connecting portions and/or a plurality of gate connecting portions, and the at least one driving circuit includes at least one source driving circuit and at least one gate driving circuit; the at least one source driving circuit electrically connected to the plurality of data connecting portions in the flexible array substrate; and/or the at least one gate driving circuit electrically connected to the plurality of gate connecting portions in the flexible array substrate. ### Claim 13 (depends on 12) The flexible array substrate according to claim 12, wherein the at least one gate driving circuit is at least one GOA circuit; and output end(s) of the at least one GOA circuit are electrically connected to the plurality of gate connecting portions. ### Claim 14 (depends on 12) The flexible display device according to claim 12, wherein the at least one source driving circuit is at least one source driver IC, and the at least one source driver IC and the plurality of data connecting portions are connected by at least one COF. ### Claim 15 (depends on 1) A method of assembling a flexible display device, comprising: providing the flexible array substrate according to claim 1, the flexible array substrate comprising at least one GOA circuit; mounting components comprising at least one driver IC on the flexible array substrate, and bending the flexible array substrate along the at least one bent portion to obtain a bent flexible array substrate, so as to move the at least one source driver IC and the at least one GOA circuit to a back side of a portion of the flexible array substrate corresponding to the main display area; and bonding the bent flexible array substrate and a cover plate with an optically clear adhesive, so as to assemble a flexible display device. ### Claim 16 (depends on 15) The method of assembling the flexible display device according to claim 15, wherein a portion of the flexible substrate within the main display area includes a main portion and at least one curved portion each located between the main portion and a corresponding one of the at least one bent portion, and bending the flexible array substrate along each of the at least one bent portion to obtain a bent flexible array substrate, so as to move the at least one source driver IC and the at least one GOA circuit to a back side of a portion of the flexible array substrate corresponding to a main display area, comprises: bending the flexible array substrate along the at least one bent portion to obtain a bent flexible array substrate, so as to move the at least one source driver IC and the at least one GOA circuit on the flexible array substrate to a back side of a portion of the flexible array substrate corresponding to the main portion by way of the at least one curved portion and the at least one bent portion.