# US 2019/0172894 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 2019/0172894 A1 - Document ID: US20190172894A1 - Status: Published application - Kind: A1 - Application number: 16/250,849 - Filed: 2019-01-17 - Published: 2019-06-06 - Earliest claimed: 2016-11-15 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Yang Wan KIM; Hyung Jun PARK; Jae Yong LEE; Byung Sun KIM; Su Jin LEE - Web page: https://patentgrep.com/patent/US20190172894A1 ## CPC - H10K 59/131: Interconnections, e.g. wiring lines or terminals - H10D 86/441: {Interconnections, e.g. scanning lines} - H10D 86/60: wherein the TFTs are in active matrices - H10K 59/1213: {the pixel elements being TFTs} - H10K 59/1216: {the pixel elements being capacitors} - H10K 59/124: Insulating layers formed between TFT elements and OLED elements - H10K 59/1315: {comprising structures specially adapted for lowering the resistance} - G09G 3/3233: with pixel circuitry controlling the current through the light-emitting element - G09G 2300/0426: Layout of electrodes and connections - H10K 2102/3026: {Top emission} - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES - 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 A display device includes: a substrate; pixels, the pixels each including at least one transistor and a light emitting device connected to the transistor; data lines and scan lines connected to the pixels; and a power line supplying power to the light emitting device. The transistor includes an active pattern on the substrate, source and drain electrodes each connected to the active pattern, a gate electrode on the active pattern, an interlayer insulating layer covering the gate electrode, the interlayer insulating layer including a first interlayer insulating layer, a second interlayer insulating layer, and a third interlayer insulating layer, which are sequentially stacked, and a protective layer provided on the interlayer insulating layer. The third interlayer insulating layer includes a concave part in a region in which the light emitting device and the second conductive layer overlap with each other, and the second conductive layer is in the concave part. ## Claims ### Claim 1 A display device comprising: a substrate comprising a pixel region and a peripheral region; pixels in the pixel region of the substrate, the pixels comprising at least one transistor and a light emitting device connected to the at least one transistor; data lines and scan lines connected to the pixels; a power line configured to supply power to the light emitting device, the power line overlapping with the light emitting device; and an insulating layer between the power line and the light emitting device, wherein the power line comprises a first conductive layer at a same layer as the data lines and a second conductive layer on the first conductive layer, wherein the insulating layer comprises a concave part at a region in which the light emitting device and the power line overlap with each other, and wherein the second conductive layer is in the concave part. ### Claim 2 (depends on 1) The display device of claim 1, wherein the insulating layer comprises a first insulating layer and a second insulating layer that are sequentially stacked. ### Claim 3 (depends on 2) The display device of claim 2, wherein the first insulating layer comprises: a first sub-insulating layer on the first conductive layer; and a second sub-insulating layer on the first sub-insulating layer, the second sub-insulating layer comprising an organic insulating layer. ### Claim 4 (depends on 3) The display device of claim 3, wherein the concave part comprises a region in which a portion of the second sub-insulating layer is removed to expose the first sub-insulating layer therethrough. ### Claim 5 (depends on 4) The display device of claim 4, wherein the second conductive layer is on the first sub-insulating layer. ### Claim 6 (depends on 3) The display device of claim 3, wherein the concave part comprises a concave region at which a partial thickness of the second sub-insulating layer is removed. ### Claim 7 (depends on 2) The display device of claim 2, wherein the first insulating layer comprises an organic insulating layer, and wherein the concave part exposes the first conductive layer therethrough. ### Claim 8 (depends on 7) The display device of claim 7, wherein, at the concave part, the second conductive layer is in direct contact with the first conductive layer. ### Claim 9 (depends on 1) The display device of claim 1, wherein the second conductive layer comprises: a plurality of first conductive lines extending in one direction; and a plurality of second conductive lines crossing the first conductive lines, wherein the plurality of first conductive lines and the plurality of second conductive lines are electrically connected to each other. ### Claim 10 (depends on 9) The display device of claim 9, wherein the second conductive layer has a mesh form. ### Claim 11 (depends on 10) The display device of claim 10, wherein the first conductive lines extend in a direction parallel to one of the data lines and the scan lines. ### Claim 12 (depends on 2) The display device of claim 2, wherein the second insulating layer has a planarized surface. ### Claim 13 (depends on 12) The display device of claim 12, wherein, in the second insulating layer, a thickness of a region corresponding to the concave part is greater than that of an other region. ### Claim 14 (depends on 12) The display device of claim 12, wherein the light emitting device comprises a first electrode on the second insulating layer, a second electrode on the first electrode, and an emitting layer between the first electrode and the second electrode. ### Claim 15 (depends on 14) The display device of claim 14, wherein an interface between the second insulating layer and the first electrode has a flat surface.