# US 2021/0345478 A1 · Driving Circuit Board 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 2021/0345478 A1 - Document ID: US20210345478A1 - Status: Published application - Kind: A1 - Application number: 16/330,471 - Filed: 2018-08-27 - Published: 2021-11-04 - Earliest claimed: 2017-10-26 - 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: Binfeng FENG - Web page: https://patentgrep.com/patent/US20210345478A1 ## CPC - H05K 1/028: {Bending or folding regions of flexible printed circuits (H05K1/0283 takes precedence)} - G09G 3/3208: organic, e.g. using organic light-emitting diodes [OLED] - H05K 1/189: characterised by the use of flexible or folded printed circuits - H10W 90/00: Package configurations - H05K 2201/09063: Holes or slots in insulating substrate not used for electrical connections - H05K 2201/10128: Display - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - 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) - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 ## Abstract There is disclosed a driving circuit board for a display device. The driving circuit board is foldable. The driving circuit board is provided with a through hole which penetrates through the driving circuit board and which is located at a foldable portion of the driving circuit board. The disclosure also provides a display device. ## Claims ### Claim 1 A driving circuit board for a display device, the driving circuit board being foldable, wherein the driving circuit board is provided with a through hole which penetrates through the driving circuit board and which is located at a foldable portion of the driving circuit board. ### Claim 2 (depends on 1) The driving circuit board according to claim 1, wherein the display device comprises a display substrate having a display area and a lead area around the display area, the lead area being provided with a lead extending from the display area; and one end of the driving circuit board is configured to couple to the lead area to electrically connect to the lead in the lead area, and the other end of the driving circuit board is configured to couple to a side of the display substrate facing away from a light emitting direction. ### Claim 3 (depends on 2) The driving circuit board according to claim 2, wherein the driving circuit board comprises a substrate, and a signal line and a driving chip disposed on the substrate, the signal line is configured to connect the driving chip and the lead in the lead portion, and the signal line is located in a region on the driving circuit board where the through hole is not provided. ### Claim 4 (depends on 3) The driving circuit board according to claim 3, wherein the driving circuit board further comprises a first protective layer disposed on the substrate, and the first protective layer covers at least a portion of the signal line at the foldable portion. ### Claim 5 (depends on 4) The driving circuit board according to claim 4, wherein a plurality of through holes are provided, and an arrangement direction of the through holes is perpendicular to a folding direction of the driving circuit board. ### Claim 6 (depends on 5) The driving circuit board according to claim 5, wherein a plurality of driving chips are provided; and along the arrangement direction of the through holes, the plurality of through holes and the plurality of driving chips are alternately arranged. ### Claim 7 (depends on 3) The driving circuit board according to claim 3, wherein a thickness of the substrate ranges from 20 μm to 50 μm. ### Claim 8 (depends on 1) A display device, comprising a display substrate and the driving circuit board according to claim 1. ### Claim 9 (depends on 8) The display device according to claim 8, wherein the display substrate comprises a display area and a lead area around the display area, the lead area being provided with a lead extending from the display area; and one end of the driving circuit board is configured to couple to the lead area to electrically connect to the lead in the lead area, and the other end of the driving circuit board is configured to couple to a side of the display substrate facing away from a light emitting direction. ### Claim 10 (depends on 9) The display device according to claim 9, wherein the driving circuit board comprises a substrate, and a signal line and a driving chip disposed on the substrate, the display substrate includes a base and a second protective layer disposed on a side of the base, the lead in the lead area is disposed on a side of the base facing away from the second protective layer, and the base and the substrate are formed as an integral structure. ### Claim 11 (depends on 10) The display device according to claim 10, wherein the display substrate further comprises a buffer layer, and the buffer layer is located on a side of the second protective layer facing away from the base. ### Claim 12 (depends on 9) The display device according to claim 9, wherein a plurality of the driving circuit boards are provided, and the plurality of driving circuit boards are located at different edges of the display substrate.