# US 10,455,700 B2 · Electronic device and display unit > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,455,700 B2 - Document ID: US10455700B2 - Status: Granted - Kind: B2 - Application number: 15/110,734 - Filed: 2015-02-26 - Published: 2016-11-17 - Granted: 2019-10-22 - Earliest claimed: 2014-03-26 - Assignees: Panasonic Intellectual Property Management Co., Ltd. - Applicants: Panasonic Intellectual Property Management Co., Ltd. - Inventors: Kazuho Sakurai; Hiromu Kita - Web page: https://patentgrep.com/patent/US10455700B2 ## CPC - H05K 1/14: Structural association of two or more printed circuits (providing electric connection to or between printed circuits H05K1/11, H01R12/00) - H01B 7/0861: {comprising one or more screens} - H05K 1/0237: {High frequency adaptations (H05K1/0216 takes precedence)} - 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 9/0088: {comprising a plurality of shielding layers; combining different shielding material structure} - H05K 1/028: {Bending or folding regions of flexible printed circuits (H05K1/0283 takes precedence)} - H05K 1/0283: {Stretchable printed circuits} - H05K 3/0058: {Laminating printed circuit boards onto other substrates, e.g. metallic substrates (H05K1/0281 takes precedence)} - H05K 3/361: {Assembling flexible printed circuits with other printed circuits} - H05K 2201/055: Folded back on itself - H05K 2201/10128: Display - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K}) ## Abstract An electronic device includes: a first circuit board on which a first circuit is mounted; a second circuit board on which a second circuit is mounted; a supporter; a flexible flat cable disposed on the supporter and connecting the first circuit board and the second circuit board to each other, the flexible flat cable transmitting signals between the first circuit and the second circuit. The flexible flat cable is provided with a crease. The flexible flat cable is disposed such that the crease is in contact with the supporter. ## Claims ### Claim 1 An electronic device, comprising: a first circuit board on which a first circuit is mounted; a second circuit board on which a second circuit is mounted; a supporter; and a flexible flat cable disposed on the supporter and connecting the first circuit board and the second circuit board to each other, the flexible flat cable transmitting a signal between the first circuit and the second circuit, wherein: the first circuit board and the second circuit board are mounted on the supporter, the flexible flat cable is provided with a plurality of creases, the supporter has a continuous surface at least from a first portion at which one of the plurality of creases closest to the first circuit board is mounted on the supporter to a second portion at which another of the plurality of creases closest to the second circuit board is mounted on the supporter, and the flexible flat cable is disposed such that the plurality of creases are in contact with the continuous surface of the supporter. ### Claim 2 (depends on 1) The electronic device according to claim 1, wherein: the flexible flat cable is disposed such that an interval between adjacent ones of contact portions is smaller than an interval between adjacent ones of the plurality of creases, and each of the contact portions is a portion where a corresponding crease of the plurality of creases is in contact with the continuous surface of the supporter. ### Claim 3 (depends on 2) The electronic device according to claim 2, wherein a connecting portion of the flexible flat cable connected to one of the first and second circuit boards is located farther from the continuous surface than contact portions of the plurality of creases to the continuous surface. ### Claim 4 (depends on 1) The electronic device according to claim 1, wherein: the flexible flat cable includes a shield surface and a signal surface, and the plurality of creases are formed such that the shield surface is valley-folded and the signal surface is mountain-folded, the flexible flat cable being disposed such that a portion of the signal surface being mountain-folded is in contact with the continuous surface of the supporter. ### Claim 5 (depends on 1) The electronic device according to claim 1, wherein an entirety of the flexible flat cable is disposed on the supporter. ### Claim 6 (depends on 1) The electronic device according to claim 1, wherein the continuous surface is flat. ### Claim 7 (depends on 6) The electronic device according to claim 6, wherein the continuous surface extends below the first and second circuit boards. ### Claim 8 (depends on 1) The electronic device according to claim 1, wherein: each of the plurality of creases is provided with a fold-back which is set to have a predetermined width such that the flexible flat cable has a plurality of fold-backs, each of the plurality of fold-backs is formed at a corresponding portion of the flexible flat cable being mountain-folded, and the flexible flat cable is disposed such that the plurality of fold-backs provided to the plurality of creases are discretely in contact with the continuous surface of the supporter. ### Claim 9 An electronic device, comprising: a first circuit board on which a first circuit is mounted; a second circuit board on which a second circuit is mounted; a supporter; and a flexible flat cable disposed on the supporter and connecting the first circuit board and the second circuit board to each other, the flexible flat cable transmitting a signal between the first circuit and the second circuit, wherein: the first circuit board and the second circuit board are mounted on the supporter, the flexible flat cable is provided with a plurality of creases, the supporter has a continuous surface at least from a portion at which one of the plurality of creases closest to the first circuit board is mounted on the supporter to a portion at which another of the plurality of creases closest to the second circuit board is mounted on the supporter, the flexible flat cable is disposed such that the plurality of creases are in contact with the continuous surface of the supporter, and the flexible flat cable is disposed such that regions, each of which projects in an arc-shaped manner originating from a corresponding one of the plurality of creases being in contact with the supporter, are formed. ### Claim 10 A display apparatus, comprising: a display panel having a display unit displaying an image and a supporter supporting the display unit; a first circuit board on which a first circuit is mounted; a second circuit board on which a second circuit is mounted; and a flexible flat cable disposed on the supporter and connecting the first circuit board and the second circuit board to each other, the flexible flat cable transmitting a signal between the first circuit and the second circuit, wherein: the first circuit board and the second circuit board are mounted on the supporter, the flexible flat cable is provided with a plurality of creases, the supporter has a continuous surface at least from a first portion at which one of the plurality of creases closest to the first circuit board is mounted on the supporter to a second portion at which another of the plurality of creases closest to the second circuit board is mounted on the supporter, and the flexible flat cable is disposed such that the plurality of creases are in contact with the continuous surface of the supporter. ### Claim 11 (depends on 10) The display apparatus according to claim 10, wherein an entirety of the flexible flat cable is disposed on the supporter. ### Claim 12 (depends on 10) The display apparatus according to claim 10, wherein: the display panel includes a chassis supporting the display unit, and the supporter is a part of the chassis. ### Claim 13 (depends on 12) The display apparatus according to claim 12, wherein the chassis is made of metal. ### Claim 14 (depends on 10) The display apparatus according to claim 10, wherein the continuous surface is flat. ### Claim 15 (depends on 14) The display apparatus according to claim 14, wherein the continuous surface extends below the first and second circuit boards. ### Claim 16 (depends on 10) The display apparatus according to claim 10, wherein each of the plurality of creases is provided with a fold-back which is set to have a predetermined width such that the flexible flat cable has a plurality of fold-backs, each of the plurality of fold-backs is formed at a corresponding portion of the flexible flat cable being mountain-folded, and the flexible flat cable is disposed such that the plurality of fold-backs provided to the plurality of creases are discretely in contact with the continuous surface of the supporter.