# US 2022/0285332 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 2022/0285332 A1 - Document ID: US20220285332A1 - Status: Published application - Kind: A1 - Application number: 17/750,489 - Filed: 2022-05-23 - Published: 2022-09-08 - Earliest claimed: 2019-11-25 - Assignees: Japan Display Inc. - Applicants: Japan Display Inc. - Inventors: Yoshinori AOKI; Yasuhiro KANAYA; Masanobu IKEDA; Akihiro OGAWA - Web page: https://patentgrep.com/patent/US20220285332A1 ## CPC - H10W 90/00: Package configurations - 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) - G09F 9/33: being semiconductor devices, e.g. diodes - H10H 20/83: Electrodes - H10H 20/84: Coatings, e.g. passivation layers or antireflective coatings - H10H 20/857: Interconnections, e.g. lead-frames, bond wires or solder balls - G09G 3/32: semiconductive, e.g. using light-emitting diodes [LED] - G09G 3/3233: with pixel circuitry controlling the current through the light-emitting element - G09G 2300/0426: Layout of electrodes and connections - G09G 2300/0443: with several sub-pixels for the same colour in a pixel, not specifically used to display gradations (G09G3/364 takes precedence) - G09G 2300/0819: used for counteracting undesired variations, e.g. feedback or autozeroing - G09G 2300/0842: forming a memory circuit, e.g. a dynamic memory with one capacitor - G09G 2300/0861: with additional control of the display period without amending the charge stored in a pixel memory, e.g. by means of additional select electrodes - G09G 2310/0267: Details of drivers for scan electrodes, other than drivers for liquid crystal, plasma or OLED displays - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 - G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS - H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS - 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) ## Abstract According to one embodiment, a display device includes pixels each including transistors, pixel electrodes, a contact electrode, and light emitting elements, and an insulating basement, a first organic insulating layer, a second organic insulating layer, a resin layer, a common electrode, and first wiring lines. The common electrode is electrically connected to cathodes of the light emitting elements, and electrically connected to the contact electrodes of the pixels. The first wiring lines, each provided between the first organic insulating layer and the second organic insulating layer or between the second organic insulating layer and the resin layer, are electrically connected to the contact electrodes of the pixels, and are formed of a metal. ## Claims ### Claim 1 A display device comprising: a plurality of pixels each including a plurality of transistors, a plurality of pixel electrodes, a contact electrode, and a plurality of light emitting elements; an insulating basement; a first organic insulating layer provided above the insulating basement to cover the transistors; a second organic insulating layer provided above the first organic insulating layer; a resin layer provided on the second organic insulating layer; a common electrode disposed on the resin layer; and a plurality of first wiring lines, wherein the plurality of pixel electrodes and the contact electrode being provided between the second organic insulating layer and the resin layer, each of the light emitting elements including a first polar electrode located on a surface opposed to a corresponding pixel electrode of the plurality of pixel electrodes and electrically connected to the pixel electrode, and a second polar electrode located on a surface opposite to the surface where the first polar electrode is located, the second polar electrode of each of the light emitting elements being exposed from the resin layer, the common electrode being electrically connected to the second polar electrodes of the plurality of light emitting elements, and being electrically connected to the contact electrodes of the plurality of pixels through the plurality of first contact holes formed in the resin layer, and the plurality of first wiring lines, each provided between the first organic insulating layer and the second organic insulating layer or between the second organic insulating layer and the resin layer, being electrically connected to the contact electrodes of the plurality of pixels, and being formed of a metal. ### Claim 2 (depends on 1) The display device of claim 1, wherein the contact electrodes are formed of a metal, each of the pixels further includes a connection layer disposed on the contact electrode and formed of solder, and the common electrode is in contact with the connection layers of the plurality of pixels through the plurality of first contact holes. ### Claim 3 (depends on 2) The display device of claim 2, wherein the contact electrode includes an uppermost layer located on a side opposed to the common electrode and formed of aluminum or an aluminum alloy, and the connection layer is in contact with the uppermost layer. ### Claim 4 (depends on 2) The display device of claim 2, wherein the plurality of pixels are arrayed in a matrix in a first direction and a second direction intersecting each other, and the plurality of first wiring lines, each extending in the first direction, are arranged at intervals in the second direction and electrically connected to the contact electrodes of the plurality of pixels arranged in the first direction or, each extending in the second direction, are arranged at intervals in the first direction and electrically connected to the contact electrodes of the plurality of pixels arranged in the second direction. ### Claim 5 (depends on 4) The display device of claim 4, wherein the plurality of first wiring lines are provided between the second organic insulating layer and the resin layer and integrally formed of a same metal as the plurality of contact electrodes. ### Claim 6 (depends on 4) The display device of claim 4, further comprising: a plurality of second wiring lines each provided between the first organic insulating layer and the second organic insulating layer or between the second organic insulating layer and the resin layer, and formed of a metal, wherein the plurality of first wiring lines, each extending in the second direction, are arranged at intervals in the first direction and electrically connected to the contact electrodes of the plurality of pixels arranged in the second direction, and the plurality of second wiring lines, each extending in the first direction, are arranged at intervals in the second direction, intersect the plurality of first wiring lines, and are electrically connected to the contact electrodes of the plurality of pixels arranged in the first direction. ### Claim 7 (depends on 6) The display device of claim 6, wherein the plurality of first wiring lines and the plurality of second wiring lines are provided in a same layer and integrally formed of a same metal. ### Claim 8 (depends on 6) The display device of claim 6, wherein the plurality of first wiring lines are provided between the second organic insulating layer and the resin layer, and the plurality of second wiring lines are provided between the first organic insulating layer and the second organic insulating layer. ### Claim 9 (depends on 7) The display device of claim 7, wherein the plurality of first wiring lines and the plurality of second wiring lines are provided between the second organic insulating layer and the resin layer and integrally formed of a same metal as the plurality of contact electrodes. ### Claim 10 (depends on 1) The display device of claim 1, further comprising: a display area where the plurality of pixels are arrayed in a matrix in a first direction and a second direction intersecting each other; a non-display area outside the display area; a plurality of first power lines located in the display area, extending in the second direction, and arranged at intervals in the first direction; and a second power line located in the non-display area and set to a potential different from a potential of the plurality of first power lines, wherein each of the plurality of first wiring lines is located in the display area and the non-display area, and electrically connected to the second power line in the non-display area, and each of the light emitting elements is electrically connected between a corresponding first power line of the plurality of first power lines and the second power line. ### Claim 11 (depends on 10) The display device of claim 10, further comprising: a plurality of second wiring lines each provided between the first organic insulating layer and the second organic insulating layer or between the second organic insulating layer and the resin layer, and formed of a metal, wherein the plurality of first wiring lines, each extending in the second direction, are arranged at intervals in the first direction and electrically connected to the contact electrodes of the plurality of pixels arranged in the second direction, and the plurality of second wiring lines, each extending in the first direction, are arranged at intervals in the second direction, intersect the plurality of first wiring lines, are electrically connected to the contact electrodes of the plurality of pixels arranged in the first direction, are located in the display area and the non-display area, and are electrically connected to the second power line in the non-display area. ### Claim 12 (depends on 10) The display device of claim 10, wherein the plurality of pixels include a plurality of sub-pixels each including a pixel electrode of the plurality of pixel electrodes and a light emitting element of the plurality of light emitting elements, each of the sub-pixels further includes a drive transistor that is the transistor provided above the insulating basement and covered with the first organic insulating layer, and in each of the sub-pixels, the drive transistor and the light emitting element are serially connected between the first power line and the second power line.