# US 8,772,795 B2 · Light-emitting device and lighting device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,772,795 B2 - Document ID: US8772795B2 - Status: Granted - Kind: B2 - Application number: 13/367,643 - Filed: 2012-02-07 - Published: 2012-08-16 - Granted: 2014-07-08 - Earliest claimed: 2011-02-14 - Assignees: Semiconductor Energy Laboratory Co., Ltd. - Applicants: Shunpei Yamazaki; Koji Ono; Yoshifumi Tanada - Inventors: Shunpei Yamazaki; Koji Ono; Yoshifumi Tanada - Web page: https://patentgrep.com/patent/US8772795B2 ## CPC - H10K 59/86: Series electrical configurations of multiple OLEDs - H10K 59/122: Pixel-defining structures or layers, e.g. banks - H10K 59/84: Parallel electrical configurations of multiple OLEDs - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract To provide a light-emitting device including the plurality of light-emitting elements having a structure in which a light-emitting area is large and defects in patterning of light-emitting elements are suppressed. To provide a lighting device including the light-emitting device. The light-emitting device includes a first wiring provided over a substrate having an insulating surface, an insulating film provided over the first wiring, a second wiring provided over the insulating film, and a light-emitting element unit including a plurality of light-emitting elements provided over the first wiring with the insulating film provided therebetween. The plurality of light-emitting elements each include a first electrode layer having a light-blocking property, a layer containing an organic compound in contact with the first electrode layer, and a second electrode layer having a light-transmitting property in contact with the layer containing an organic compound. The layers containing an organic compound are separated by a separation layer. ## Claims ### Claim 1 A light-emitting device comprising: a substrate; a first wiring over the substrate; an insulating film over the first wiring; a second wiring over the insulating film; and a first light-emitting element, a second light-emitting element, and a third light-emitting element over the insulating film, each of the first to third light-emitting elements comprising: a first electrode having a light-blocking property; a layer containing an organic compound on the first electrode; and a second electrode having a light-transmitting property on the layer containing an organic compound, wherein the layers containing an organic compound of the first and second light-emitting elements are separated from each other by a separation layer, wherein the second electrodes of the first and second light-emitting elements are separated from each other by the separation layer, wherein the first electrode of the first light-emitting element is directly in contact with the first wiring, wherein the second electrode of the first light-emitting element extends beyond an edge portion of the layer containing an organic compound of the first light-emitting element and is directly in contact with the first electrode of the second light-emitting element, wherein the second electrode of the third light-emitting element extends beyond an edge portion of the layer containing an organic compound of the third light-emitting element and is directly in contact with the second wiring, and wherein the first light-emitting element, the second light-emitting element, and the third light-emitting element are electrically connected to each other in series. ### Claim 2 (depends on 1) The light-emitting device according to claim 1, further comprising a fourth light-emitting element, a fifth light-emitting element, and a sixth light-emitting element over the insulating film, wherein the fourth light-emitting element, the fifth light-emitting element, and the sixth light-emitting element are electrically connected to each other in series. ### Claim 3 (depends on 2) The light-emitting device according to claim 2, wherein a first light-emitting element row comprising the first light-emitting element, the second light-emitting element, and the third light-emitting element and a second light-emitting element row comprising the fourth light-emitting element, the fifth light-emitting element, and the sixth light-emitting element are electrically connected to each other in parallel. ### Claim 4 (depends on 1) The light-emitting device according to claim 1, wherein a cross section of the separation layer has a shape in which a side in contact with a surface where the separation layer is formed is shorter than the opposite side. ### Claim 5 (depends on 1) The light-emitting device according to claim 1, wherein the substrate is made of organic resin or metal. ### Claim 6 (depends on 1) The light-emitting device according to claim 1, wherein the first wiring and the second wiring are formed of a conductive paste. ### Claim 7 (depends on 1) The light-emitting device according to claim 1, wherein light emitted from the first light-emitting element is extracted through the second electrode of the first light-emitting element. ### Claim 8 (depends on 1) A lighting device comprising the light-emitting device according to claim 1. ### Claim 9 A light-emitting device comprising: a substrate; a first wiring over the substrate; an insulating film over the first wiring; a second wiring over the insulating film; and a first light-emitting element, a second light-emitting element, and a third light-emitting element over the insulating film, each of the first to third light-emitting elements comprising: a first electrode; a layer containing an organic compound on the first electrode; and a second electrode on the layer containing an organic compound, wherein the layers containing an organic compound of the first and second light-emitting elements are separated from each other by a separation layer, wherein the second electrodes of the first and second light-emitting elements are separated from each other by the separation layer, wherein the first electrode of the first light-emitting element is directly in contact with the first wiring, wherein the second electrode of the first light-emitting element extends beyond an edge portion of the layer containing an organic compound of the first light-emitting element and is directly in contact with the first electrode of the second light-emitting element, wherein the second electrode of the third light-emitting element extends beyond an edge portion of the layer containing an organic compound of the third light-emitting element and is directly in contact with the second wiring, and wherein the first light-emitting element, the second light-emitting element, and the third light-emitting element are electrically connected to each other in series. ### Claim 10 (depends on 9) The light-emitting device according to claim 9, further comprising a fourth light-emitting element, a fifth light-emitting element, and a sixth light-emitting element over the insulating film, wherein the fourth light-emitting element, the fifth light-emitting element, and the sixth light-emitting element are electrically connected to each other in series. ### Claim 11 (depends on 10) The light-emitting device according to claim 10, wherein a first light-emitting element row comprising the first light-emitting element, the second light-emitting element, and the third light-emitting element and a second light-emitting element row comprising the fourth light-emitting element, the fifth light-emitting element, and the sixth light-emitting element are electrically connected to each other in parallel. ### Claim 12 (depends on 9) The light-emitting device according to claim 9, wherein a cross section of the separation layer has a shape in which a side in contact with a surface where the separation layer is formed is shorter than the opposite side. ### Claim 13 (depends on 9) The light-emitting device according to claim 9, wherein the substrate is made of organic resin or metal. ### Claim 14 (depends on 9) The light-emitting device according to claim 9, wherein the first wiring and the second wiring are formed of a conductive paste. ### Claim 15 (depends on 9) A lighting device comprising the light-emitting device according to claim 9. ### Claim 16 A light-emitting device comprising: a substrate; a first wiring over the substrate; an insulating film over the first wiring; a second wiring over the insulating film; and a first plurality of light-emitting elements comprising a first light-emitting element, a second light-emitting element, and a third light-emitting element over the insulating film, each of the first light-emitting element, the second light-emitting element, and the third light-emitting element comprising: a first electrode; an EL layer over the first electrode; and a second electrode over the EL layer, wherein the EL layer of the first light-emitting element and the EL layer of the second light-emitting element are separated from each other by a separation layer, wherein the second electrode of the first light-emitting element and the second electrode of the second light-emitting element are separated from each other by the separation layer, wherein the first electrode of the first light-emitting element is in contact with the first wiring, wherein the second electrode of the first light-emitting element extends beyond an edge portion of the EL layer of the first light-emitting element, wherein the second electrode of the first light-emitting element is in contact with the first electrode of the second light-emitting element, wherein the second electrode of the third light-emitting element extends beyond an edge portion of the EL layer of the third light-emitting element, wherein the second electrode of the third light-emitting element is in contact with the second wiring, and wherein the first light-emitting element, the second light-emitting element, and the third light-emitting element are electrically connected to each other in series. ### Claim 17 (depends on 16) The light-emitting device according to claim 16, further comprising a second plurality of light-emitting elements comprising a fourth light-emitting element, a fifth light-emitting element, and a sixth light-emitting element over the insulating film, wherein the fourth light-emitting element, the fifth light-emitting element, and the sixth light-emitting element are electrically connected to each other in series. ### Claim 18 (depends on 17) The light-emitting device according to claim 17, wherein the first plurality of light-emitting elements and the second plurality of light-emitting elements are electrically connected to each other in parallel. ### Claim 19 (depends on 16) The light-emitting device according to claim 16, wherein a cross section of the separation layer has a shape in which a side in contact with a surface where the separation layer is formed is shorter than the opposite side. ### Claim 20 (depends on 16) The light-emitting device according to claim 16, wherein the substrate is made of organic resin or metal. ### Claim 21 (depends on 16) The light-emitting device according to claim 16, wherein the first wiring and the second wiring are formed of a conductive paste. ### Claim 22 (depends on 16) A lighting device comprising the light-emitting device according to claim 16.