# US 7,609,348 B2 · Display device with bridge section > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,609,348 B2 - Document ID: US7609348B2 - Status: Granted - Kind: B2 - Application number: 11/870,693 - Filed: 2007-10-11 - Published: 2008-04-17 - Granted: 2009-10-27 - Earliest claimed: 2006-10-12 - Assignees: Hitachi Displays, Ltd. - Inventors: Takanori Nakayama; Ryouhei Suzuki; Atsuhiro Katayama - Web page: https://patentgrep.com/patent/US7609348B2 ## CPC - G02F 1/13452: {Conductors connecting driver circuitry and terminals of panels} - H05K 3/3452: Solder masks - H05K 3/381: {by special treatment of the substrate} - 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 - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS ## Abstract Measures are taken against the problem that a conductive matter is attached to an organic film in the vicinity of terminal sections of a display device, which causes electrical connection between the terminals when the terminals are connected to a flexible wiring board. An organic passivation film is formed to the vicinity of the end of the substrate, and a conductive matter is attached to the edge of the organic passivation film. The conductive attachment is divided by extending a bridge section of the organic passivation film to the end of the substrate. Thus, even if a flexible wiring board is connected thereto, the electrical connection between the terminals can be prevented. ## Claims ### Claim 1 A display device comprising: a substrate having an image forming section in which a plurality of pixel sections is arranged in a matrix, each of the pixel sections including a thin film transistor and a pixel electrode; a plurality of terminal sections formed in a periphery of the substrate and for supplying the pixel electrode with a signal; an organic insulating film having a through hole formed in the terminal section; and a metal oxide conductive film formed so as to cover the through hole and a periphery of the through hole, wherein an end of the organic insulating film is located on the substrate outer than the terminal sections, and inner than an end of the substrate, a part of the organic insulating film forms a bridge section extending outside the end of the organic insulating film to the end of the substrate, and the bridge section is located between the terminal sections adjacent to each other. ### Claim 2 (depends on 1) The display device according to claim 1, wherein an width of the bridge section is larger than a thickness of the organic insulating film and smaller than a half of a distance between the terminal sections adjacent to each other. ### Claim 3 (depends on 1) The display device according to claim 1, wherein a plurality of the bridge sections is located between the terminal sections adjacent to each other. ### Claim 4 (depends on 1) The display device according to claim 1, wherein the bridge section has a portion with a larger width and a portion with a smaller width. ### Claim 5 (depends on 4) The display device according to claim 4, wherein the larger width is smaller than a half of a distance between the terminal sections adjacent to each other, and the smaller width is larger than a thickness of the organic insulating film. ### Claim 6 (depends on 1) The display device according to claim 1, wherein the bridge section and the through hole provided to the terminal section of the organic insulating film are formed in the same process. ### Claim 7 (depends on 1) The display device according to claim 1, wherein the metal oxide conductive film is made of ITO. ### Claim 8 A liquid crystal display device comprising: a substrate having an image forming section in which a plurality of pixel sections is arranged in a matrix, each of the pixel sections including a thin film transistor and a pixel electrode; and an organic insulating film formed in an upper layer of the thin film transistor, wherein the pixel electrode is formed on the organic insulating film, a wire formed in the same process as a drain wire connected to the thin film transistor extends to a terminal section, the organic insulating film is formed to the outside of the image forming section, a through hole is provided to the organic insulating film in the terminal section, a metal oxide conductive film covers the through hole and a periphery of the through hole, the wire formed in the same process as the drain wire and the metal oxide conductive film are connected to each other at the through hole, an end of the organic insulating film is located on the substrate outer than the terminal sections, and inner than an end of the substrate, a part of the organic insulating film forms a bridge section extending outside the end of the organic insulating film to the end of the substrate, and the bridge section is located between the terminal sections adjacent to each other. ### Claim 9 (depends on 8) The liquid crystal display device according to claim 8, wherein the pixel electrode and the metal oxide conductive film provided to the terminal sections are made of the same material, and are formed in the same process. ### Claim 10 (depends on 8) The liquid crystal display device according to claim 8, wherein the metal oxide conductive film is made of ITO. ### Claim 11 (depends on 8) The liquid crystal display device according to claim 8, wherein the wire extending to the terminal section and formed in the same process as the drain wire is the drain wire. ### Claim 12 A liquid crystal display device comprising: a substrate having an image forming section in which a plurality of pixel sections is arranged in a matrix, each of the pixel sections including a thin film transistor and a pixel electrode; and an organic insulating film formed in an upper layer of the thin film transistor, wherein the pixel electrode is formed on the organic insulating film, a wire formed in the same process as a gate wire connected to the thin film transistor extends to a terminal section, the organic insulating film is formed to the outside of the image forming section, a through hole is provided to the organic insulating film in the terminal section, a metal oxide conductive film covers the through hole and a periphery of the through hole, the wire formed in the same process as the gate wire and the metal oxide conductive film are connected to each other at the through hole, an end of the organic insulating film is located on the substrate outer than the terminal sections, and inner than an end of the substrate, a part of the organic insulating film forms a bridge section extending outside the end of the organic insulating film to the end of the substrate, and the bridge section is located between the terminal sections adjacent to each other. ### Claim 13 (depends on 12) The liquid crystal display device according to claim 12, wherein the wire formed in the same process as the gate wire is the gate wire. ### Claim 14 An organic EL display device comprising: a substrate having an image forming section in which a plurality of pixel sections is arranged in a matrix, each of the pixel sections including a thin film transistor and an organic EL light emitting section; and an organic insulating film formed in an upper layer of the thin film transistor, wherein the organic EL light emitting section includes a lower electrode formed of an oxide conductive film, an organic EL layer and an upper electrode formed of a metal layer, and is formed on the organic insulating film, a plurality of terminal sections is formed in a periphery of the image forming section, the organic insulating film is formed to the outside of the image forming section, a through hole is provided to the organic insulating film in the terminal section, a metal oxide conductive film covers the through hole and a periphery of the through hole, an end of the organic insulating film is located on the substrate outer than the terminal sections, and inner than an end of the substrate, a part of the organic insulating film forms a bridge section extending outside the end of the organic insulating film to the end of the substrate, and the bridge section is located between the terminal sections adjacent to each other. ### Claim 15 An organic EL display device comprising: a substrate having an image forming section in which a plurality of pixel sections is arranged in a matrix, each of the pixel sections including a thin film transistor and an organic EL light emitting section; and an organic insulating film formed in an upper layer of the thin film transistor, wherein the organic EL light emitting section includes a lower electrode formed of a metal layer, an organic EL layer and an upper electrode formed of an oxide conductive film, and is formed on the organic insulating film, a plurality of terminal sections is formed in a periphery of the image forming section, the organic insulating film is formed to the outside of the image forming section, a through hole is provided to the organic insulating film in the terminal section, a metal oxide conductive film covers the through hole and a periphery of the through hole, an end of the organic insulating film is located on the substrate outer than the terminal sections, and inner than an end of the substrate, a part of the organic insulating film forms a bridge section extending outside the end of the organic insulating film to the end of the substrate, and the bridge section is located between the terminal sections adjacent to each other.