# US 11,910,681 B2 · Display apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,910,681 B2 - Document ID: US11910681B2 - Status: Granted - Kind: B2 - Application number: 17/974,907 - Filed: 2022-10-27 - Published: 2023-02-16 - Granted: 2024-02-20 - Earliest claimed: 2018-09-10 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Yoonsun Choi; Seong Ryong Lee - Web page: https://patentgrep.com/patent/US11910681B2 ## CPC - H10K 59/124: Insulating layers formed between TFT elements and OLED elements - H10K 59/1213: {the pixel elements being TFTs} - H10K 59/122: Pixel-defining structures or layers, e.g. banks - H10K 59/1315: {comprising structures specially adapted for lowering the resistance} - H10K 59/873: {Encapsulations} - G09G 3/3233: with pixel circuitry controlling the current through the light-emitting element - G09G 2300/0809: Several active elements per pixel in active matrix panels - H10K 59/8731: {multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers} - H10K: ORGANIC ELECTRIC SOLID-STATE 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 apparatus includes a substrate, a first-layer power supply line disposed on a substrate in a peripheral area which surrounds a display area in which an image is displayed, a first insulation layer on the substrate on which the first-layer power supply line is disposed, a second-layer power supply line disposed on the first insulation layer and the first-layer power supply line, and contacting the first-layer power supply line, a second insulation layer on the first insulation layer on which the second-layer power supply line is disposed, and a light emitting structure disposed on the second insulation layer and including a first electrode, a light emitting layer and a second electrode which is electrically connected to the second-layer power supply line. ## Claims ### Claim 1 A display apparatus, comprising: a substrate; a first-layer power supply line disposed on the substrate in a peripheral area which does not display an image, the peripheral area surrounds a display area in which an image is displayed; a second-layer power supply line disposed only in the peripheral area and disposed on the first-layer power supply line, and contacting the first-layer power supply line; and a light emitting structure comprising a first electrode, a light emitting layer disposed on the first electrode, and a second electrode disposed on the light emitting layer and electrically connected to the second-layer power supply line, wherein the first-layer power supply line and the second-layer power supply line supply a power voltage to the second electrode which acts as a cathode of the light emitting structure. ### Claim 2 (depends on 1) The display apparatus of claim 1, further comprising: a circuit part thin film transistor disposed in a circuit part area which is between the first-layer power supply line and the display area, and wherein the second-layer power supply line extends to the circuit part area. ### Claim 3 (depends on 1) The display apparatus of claim 1, wherein a voltage level of −3 volts or less is applied to the second electrode. ### Claim 4 (depends on 1) The display apparatus of claim 1, further comprising: a first insulation layer on the substrate on which the first-layer power supply line is disposed; and a second insulation layer on the first insulation layer on which the second-layer power supply line is disposed. ### Claim 5 (depends on 4) The display apparatus of claim 4, wherein the first insulation layer and the second insulation layer comprise organic insulation material. ### Claim 6 (depends on 4) The display apparatus of claim 4, further comprising: a thin film encapsulation layer which comprises a first inorganic layer disposed on the second-layer power supply line and the second electrode, a second inorganic layer disposed on the first inorganic layer, and an organic layer disposed between the first inorganic layer and the second inorganic layer. ### Claim 7 (depends on 6) The display apparatus of claim 6, further comprising: a first insulation dam disposed on the second-layer power supply line; and a second insulation dam spaced apart from the first insulation dam, and has a height higher than the first insulation dam. ### Claim 8 (depends on 7) The display apparatus of claim 7, further comprising: a pixel defining layer, wherein the first insulation dam and the second insulation dam include the same layer as any one or more layers of the first insulation layer, the second insulation layer, and the pixel defining layer. ### Claim 9 (depends on 8) The display apparatus of claim 8, wherein a power supply line comprises the first-layer power supply line and the second-layer power supply line, and the power supply line extends along the peripheral area. ### Claim 10 (depends on 1) The display apparatus of claim 1, further comprising: a buffer layer disposed on the substrate; a circuit part active pattern of a circuit part thin film transistor disposed on the buffer layer in the peripheral area; a gate insulation layer disposed on the buffer layer on which the circuit part active pattern is disposed; a gate pattern disposed on the gate insulation layer, and comprising a gate electrode of the circuit part thin film transistor; an insulating interlayer disposed on the gate insulation layer on which the gate pattern is disposed; and a first data pattern disposed on the insulating interlayer, and comprising the first-layer power supply line. ### Claim 11 (depends on 10) The display apparatus of claim 10, further comprising: a third insulation dam disposed on the buffer layer, and contacting the gate insulation layer and the insulating interlayer. ### Claim 12 (depends on 10) The display apparatus of claim 10, wherein the second-layer power supply line is overlapped with the circuit part thin film transistor.