# US 2020/0400992 A1 · Display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0400992 A1 - Document ID: US20200400992A1 - Status: Published application - Kind: A1 - Application number: 16/903,449 - Filed: 2020-06-17 - Published: 2020-12-24 - Earliest claimed: 2019-06-21 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Jin Hee BAE; Min Ho KIM; Kyung Ha MOON; Bum Suk LEE; Nak Sung CHOI - Web page: https://patentgrep.com/patent/US20200400992A1 ## CPC - G02F 1/13452: {Conductors connecting driver circuitry and terminals of panels} - G02F 1/133345: {Insulating layers (G02F1/1335, G02F1/1337, G02F1/135, G02F1/136 take precedence)} - G02F 1/13458: {Terminal pads} - G09G 3/3677: {suitable for active matrices only} - G09G 3/3696: {Generation of voltages supplied to electrode drivers} - H05K 1/118: {specially for flexible printed circuits, e.g. using folded portions} - H05K 1/189: characterised by the use of flexible or folded printed circuits - H05K 3/323: {by applying an anisotropic conductive adhesive layer over an array of pads} - G09G 2300/0426: Layout of electrodes and connections - G09G 2300/0478: related to liquid crystal pixels - G09G 2310/0278: Details of driving circuits arranged to drive both scan and data electrodes - H05K 2201/09236: Parallel layout - H05K 2201/10128: Display - H05K 2201/10136: Liquid Crystal display [LCD] - 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 - 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) - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS ## Abstract A display device is provided. A display device includes a display panel including a plurality of connecting signal wires which supply different control voltages; a flexible printed circuit board attached to a side surface of the display panel and including a base film and a plurality of lead wires which are disposed on the base film; an anisotropic conductive film disposed between the plurality of connecting signal wires and the plurality of lead wires, and at least one bump wire disposed between adjacent connecting signal wires, the at least one bump wire being not supplied with the different control voltages controlling the display panel. ## Claims ### Claim 1 A display device comprising: a display panel including a plurality of connecting signal wires which supply different control voltages controlling the display panel, the display panel including a top surface through which an image is displayed, a bottom surface opposing the top surface and a side surface connecting the top surface and the bottom surface; a flexible printed circuit board attached to the side surface of the display panel and including a base film and a plurality of lead wires which are disposed on the base film; an anisotropic conductive film disposed between the plurality of connecting signal wires and the plurality of lead wires; and at least one bump wire disposed between adjacent connecting signal wires, the at least one bump wire being not supplied with the different control voltages controlling the display panel. ### Claim 2 (depends on 1) The display device of claim 1, wherein the at least one bump wire is supplied with a voltage between the voltages of the adjacent connecting signal wires. ### Claim 3 (depends on 2) The display device of claim 2, wherein a plurality of bump wires are disposed between the adjacent connecting signal wires, voltages applied to the plurality of bump wires increasing or decreasing sequentially between the voltages of the adjacent connecting signal wires. ### Claim 4 (depends on 1) The display device of claim 1, wherein the flexible printed circuit board includes a driving circuit which includes a gate driver, a data driver, a timing controller, and a power management integrated circuit. ### Claim 5 (depends on 4) The display device of claim 4, wherein the bump wires receive a predetermined voltage from the driving circuit via the plurality of lead wires. ### Claim 6 (depends on 1) The display device of claim 1, wherein a number of bump wires is determined by a value obtained by dividing a voltage difference between the adjacent connecting signal wires by a first value. ### Claim 7 (depends on 1) The display device of claim 1, wherein the flexible printed circuit board includes an insulating layer in an area that does not overlap with the anisotropic conductive film. ### Claim 8 (depends on 1) The display device of claim 1, wherein the anisotropic conductive film includes a resin film and a plurality of conductive balls which are disposed in the resin film and are arranged in a matrix in a layer. ### Claim 9 (depends on 8) The display device of claim 8, wherein a thickness of the anisotropic conductive film is equal to or smaller than a diameter of the conductive balls. ### Claim 10 (depends on 1) The display device of claim 1, wherein the plurality of connecting signal wires have ends thereof exposed on the side surface of the display panel and are connected to a plurality of pad electrodes. ### Claim 11 (depends on 10) The display device of claim 10, wherein the plurality of pad electrodes are formed of silver, and the plurality of connecting signal wires and the plurality of lead wires are formed of copper. ### Claim 12 (depends on 10) The display device of claim 10, wherein the plurality of pad electrodes are spaced apart from one another in a direction in which the side surface of the display panel extends. ### Claim 13 (depends on 12) The display device of claim 12, wherein a width of a lead wire connected to a pad electrode not adjacent to the bump wires is the same as a width of a lead wire connected to a pad electrode adjacent to the bump wires. ### Claim 14 (depends on 13) The display device of claim 13, wherein a width of the plurality of pad electrodes is greater than a width of the plurality of lead wires. ### Claim 15 (depends on 13) The display device of claim 13, wherein central axes of the plurality of lead wires coincide with central axes of the plurality of pad electrodes. ### Claim 16 (depends on 13) The display device of claim 13, wherein a central axis of a lead wire connected to the pad electrode adjacent to the bump wires is shifted in one direction from a central axis of the pad electrode adjacent to the bump wires, and a central axis of another lead wire connected to the pad electrode adjacent to the bump wires is shifted in the other direction from the central axis of the pad electrode adjacent to the bump wires. ### Claim 17 (depends on 12) The display device of claim 12, wherein, in the direction in which the side surface of the display panel extends, a width of a lead wire connected to a pad electrode not adjacent to the bump wires is different from a width of a lead wire connected to a pad electrode adjacent to the bump wires. ### Claim 18 (depends on 17) The display device of claim 17, wherein the width of the lead wire connected to the pad electrode adjacent to the bump wires is less than the width of the lead wire connected to the pad electrode not adjacent to the bump wires. ### Claim 19 (depends on 17) The display device of claim 17, wherein central axes of the plurality of lead wires coincide with central axes of the plurality of pad electrodes. ### Claim 20 (depends on 17) The display device of claim 17, wherein a central axis of the lead wire connected to the pad electrode adjacent to the bump wires is shifted in one direction from a central axis of the pad electrode adjacent to the bump wires, and a central axis of another lead wire connected to the pad electrode adjacent to the bump wires is shifted in the other direction from the central axis of the pad electrode adjacent to the bump wires.