# US 12,010,797 B2 · Display device and electronic device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,010,797 B2 - Document ID: US12010797B2 - Status: Granted - Kind: B2 - Application number: 18/364,543 - Filed: 2023-08-03 - Published: 2023-11-23 - Granted: 2024-06-11 - Earliest claimed: 2019-01-07 - Assignees: Japan Display Inc. - Applicants: Japan Display Inc. - Inventors: Youhei Iwai; Hideaki Abe - Web page: https://patentgrep.com/patent/US12010797B2 ## CPC - H05K 1/0281: {Reinforcement details thereof} - H05K 1/14: Structural association of two or more printed circuits (providing electric connection to or between printed circuits H05K1/11, H01R12/00) - G09F 9/00: Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements (in which the variable information is permanently attached to a movable support G09F11/00; abacus G06C1/00; slide-rules G06G1/00) - G09F 9/30: in which the desired character or characters are formed by combining individual elements (panels comprising a number of electrodes in a single cell controlling light arriving from an independent light source, e.g. electro-optical or magneto-optical cell, G02F1/00) - H05K 1/028: {Bending or folding regions of flexible printed circuits (H05K1/0283 takes precedence)} - H05K 1/118: {specially for flexible printed circuits, e.g. using folded portions} - H10K 77/111: {Flexible substrates} - G02F 1/13452: {Conductors connecting driver circuitry and terminals of panels} - H05K 1/147: {at least one of the printed circuits being bent or folded, e.g. by using a flexible printed circuit (H05K1/148 takes precedence)} - H05K 1/189: characterised by the use of flexible or folded printed circuits - H05K 2201/052: Branched - H05K 2201/10128: Display - H10K 59/131: Interconnections, e.g. wiring lines or terminals - H10K 2102/311: {Flexible OLED} - Y02E 10/549: Organic PV cells - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - 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 - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract To mitigate a bending stress in the flexible wiring substrate in a structure, a display panel, to which the flexible wiring substrate connects, is curved along a first direction, and the flexible wiring is bent back to the rear of the display panel. The flexible wiring substrate connects with the display panel at a first region and at a second region; the flexible wiring substrate connects with the wiring substrate at a third region and at a fourth region. The flexible wiring substrate has a narrowest width in the first direction at an intermediate region between the display panel and the wiring substrate. A first wiring group in the flexible wiring substrate connects the first region with the third region or the fourth region, a second wiring group in the flexible wiring substrate connects the second region with another one of the third region or the fourth region. ## Claims ### Claim 1 A display device comprising: a display panel having a first side extending in a first direction, a wiring substrate having a second side extending in the first direction, a first flexible wiring substrate connecting the display device with the wiring substrate in a second direction, which intersects with the first direction, a second flexible wiring substrate connecting the display device with the wiring substrate in the second direction, wherein the first flexible wiring substrate connects with the display panel at a first region, and connects with the wiring substrate at a third region, the first region and the third region are connected to each other by a first wiring group, the second flexible wiring substrate connects with the display panel at a second region, and connects with the wiring substrate at a fourth region, the second region and the fourth region are connected to each other by a second wiring group, the first region and the second region are separated from each other in the first direction across a center line of the first side of the display panel, the third region and the fourth region are separated from each other across a center line of the second side of the wiring substrate, the first flexible wiring substrate has a first V-shape having a first delta-shaped cut out on the side of the center line with respect to the first side between the first region and the third region, and the second flexible wiring substrate has a second V-shape having a second delta-shaped cut out on the side of the center line with respect to the first side between the second region and the fourth region. ### Claim 2 (depends on 1) The display device according to claim 1, wherein the first flexible wiring substrate and the second flexible wiring substrate do not overlap each other in plan view. ### Claim 3 (depends on 1) The display device according to claim 1, wherein the first side of the display panel is curved along the first direction. ### Claim 4 (depends on 2) The display device according to claim 2, wherein the first side of the display panel is curved along the first direction. ### Claim 5 (depends on 3) The display device according to claim 3, wherein the first flexible wiring substrate has a third side and a fourth side facing in the first direction between the first region and the third region, the second flexible wiring substrate has a fifth side and a sixth side facing in the first direction between the second region and the fourth region, the fourth side and the fifth side face each other across the center line of the first side, the first delta-shaped cut out is formed in the third side, and the second delta-shaped cut out is formed in the sixth side. ### Claim 6 (depends on 4) The display device according to claim 4, wherein the first flexible wiring substrate has a third side and a fourth side facing in the first direction between the first region and the third region, the second flexible wiring substrate has a fifth side and a sixth side facing in the first direction between the second region and the fourth region, the fourth side and the fifth side face each other across the center line of the first side, the first delta-shaped cut out is formed in the third side, and the second delta-shaped cut out is formed in the sixth side. ### Claim 7 (depends on 5) The display device according to claim 5, wherein the first wiring group has a first V-shaped wiring shape along the first V-shape, and the second wiring group has a second V-shaped wiring shape along the second V-shape. ### Claim 8 (depends on 5) The display device according to claim 5, wherein a tip of the first delta-shaped cut out has an arc, and a tip of the second delta-shaped cut out has an arc. ### Claim 9 (depends on 5) The display device according to claim 5, wherein a tip of the first delta cut out has a notch, and a tip of the second delta cut out has a notch. ### Claim 10 (depends on 6) The display device according to claim 6, wherein the first wiring group has a first V-shaped wiring shape along the first V-shape, and the second wiring group has a second V-shaped wiring shape along the second V-shape. ### Claim 11 (depends on 6) The display device according to claim 6, wherein a tip of the first delta-shaped cut out has an arc, and a tip of the second delta-shaped cut out has an arc. ### Claim 12 (depends on 6) The display device according to claim 6, wherein a tip of the first delta cut out has a notch, and a tip of the second delta cut out has a notch.