# US 2020/0403176 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 2020/0403176 A1 - Document ID: US20200403176A1 - Status: Published application - Kind: A1 - Application number: 17/012,267 - Filed: 2020-09-04 - Published: 2020-12-24 - Earliest claimed: 2018-03-07 - Assignees: Japan Display Inc. - Applicants: Japan Display Inc. - Inventors: Masakazu GUNJI - Web page: https://patentgrep.com/patent/US20200403176A1 ## CPC - H10K 59/122: Pixel-defining structures or layers, e.g. banks - 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) - H05B 33/12: Light sources with substantially two-dimensional [2D] radiating surfaces - H05B 33/22: characterised by the chemical or physical composition or the arrangement of auxiliary dielectric or reflective layers - H05B 33/26: characterised by the composition or arrangement of the conductive material used as an electrode - H10K 50/15: Hole transporting layers - H10K 50/171: {Electron injection layers} - H10K 50/856: comprising reflective means - H10K 59/121: characterised by the geometry or disposition of pixel elements - H10K 59/131: Interconnections, e.g. wiring lines or terminals - H10K 59/805: {Electrodes} - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL ## Abstract A display device includes a substrate, a plurality of pixel electrodes apart from each other which are provided above the substrate, a counter electrode disposed above the plurality of pixel electrodes, an organic EL layer interposed between the plurality of pixel electrodes and the counter electrode, an intermediate electrode disposed between the pixel electrodes adjacent to each other in plan view, and an insulating film provided between the intermediate electrode and the organic EL layer. ## Claims ### Claim 1 A display device comprising: a substrate; a plurality of pixel electrodes apart from each other which are provided above the substrate; a counter electrode disposed above the plurality of pixel electrodes; an organic EL layer interposed between the plurality of pixel electrodes and the counter electrode; an intermediate electrode disposed between the pixel electrodes adjacent to each other in plan view among the plurality of pixel electrodes, the intermediate electrode facing the organic EL layer; and an insulating film provided between the intermediate electrode and the organic EL layer. ### Claim 2 (depends on 1) The display device according to claim 1, wherein the organic EL layer includes a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, and an electron injection layer. ### Claim 3 (depends on 1) The display device according to claim 1, wherein a potential higher than a potential to be supplied to the counter electrode is supplied to the pixel electrode, and a potential higher than the potential of the pixel electrode is supplied to the intermediate electrode. ### Claim 4 (depends on 1) The display device according to claim 1, further comprising: an insulating bank provided between the pixel electrodes adjacent to each other, the insulating bank provided closer to the substrate than the organic EL layer, wherein the intermediate electrode is provided between the insulating bank and the substrate. ### Claim 5 (depends on 4) The display device according to claim 4, further comprising: a planarizing film between the pixel electrode and the substrate, wherein the intermediate electrode is provided between the planarizing film and the insulating bank. ### Claim 6 (depends on 5) The display device according to claim 5, wherein the intermediate electrode is connected to a wiring through a contact hole provided in the planarizing film. ### Claim 7 (depends on 4) The display device according to claim 4, further comprising: an insulating protrusion portion including an upper surface and a side surface between the insulating bank and the planarizing film and between the pixel electrodes adjacent to each other, wherein the intermediate electrode is provided between the insulating bank and at least one of the upper surface and the side surface of the insulating protrusion portion. ### Claim 8 (depends on 1) The display device according to claim 1, further comprising: an insulating film provided between the intermediate electrode and the counter electrode, wherein the intermediate electrode is provided between the organic EL layer and the counter electrode. ### Claim 9 (depends on 1) The display device according to claim 1, wherein the plurality of pixel electrodes include a first pixel electrode, a second pixel electrode, and a third pixel electrode, the second pixel electrode being adjacent to the first pixel electrode in a first direction, and the third pixel electrode being adjacent to the first pixel electrode in a second direction intersecting with the first direction, and the intermediate electrode is provided between the first pixel electrode and the second pixel electrode, but is not provided between the first pixel electrode and the third pixel electrode. ### Claim 10 (depends on 1) The display device according to claim 1, wherein the plurality of pixel electrodes include a first pixel electrode, a second pixel electrode, and a third pixel electrode, the second pixel electrode being adjacent to the first pixel electrode in a first direction, and the third pixel electrode being adjacent to the first pixel electrode in a second direction intersecting with the first direction, the intermediate electrode includes a first intermediate electrode provided between the first pixel electrode and the second pixel electrode and a second intermediate electrode provided between the first pixel electrode and the third pixel electrode, and the first intermediate electrode and the second intermediate electrode are spaced from each other. ### Claim 11 A display device comprising: a substrate; a plurality of pixels disposed on the substrate; a plurality of pixel electrodes respectively provided in the plurality of pixels; an organic layer located across the plurality of pixels; a plurality of light emitting layers respectively provided in the plurality of pixels; a counter electrode disposed above the plurality of pixel electrodes, the organic layer, and the light emitting layer; an intermediate electrode disposed between the pixel electrodes adjacent to each other in plan view among the plurality of pixel electrodes, the intermediate electrode facing the organic layer; and an insulating film provided between the intermediate electrode and the organic layer. ### Claim 12 (depends on 11) The display device according to claim 11, wherein the organic layer includes a hole transport layer. ### Claim 13 (depends on 11) The display device according to claim 11, further comprising: a bank partitioning the plurality of pixels, wherein the insulating film includes the bank.