# US 2021/0242294 A1 · Display apparatus and method of manufacturing the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0242294 A1 - Document ID: US20210242294A1 - Status: Published application - Kind: A1 - Application number: 17/114,986 - Filed: 2020-12-08 - Published: 2021-08-05 - Earliest claimed: 2020-01-30 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Ki Ho BANG; Eun Hye KIM; Won Suk CHOI - Web page: https://patentgrep.com/patent/US20210242294A1 ## CPC - H10K 71/70: Testing, e.g. accelerated lifetime tests - H10K 59/122: Pixel-defining structures or layers, e.g. banks - H10K 59/131: Interconnections, e.g. wiring lines or terminals - H10K 59/873: {Encapsulations} - H10K 59/1201: {Manufacture or treatment} - H10K 59/124: Insulating layers formed between TFT elements and OLED elements - H10K 2102/351: {Thickness} - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract A display apparatus includes a base substrate on which a display area and a non-display area are defined, a first via insulating layer on the base substrate, a first power supply wire in the non-display area on the first via insulating layer, a second power supply wire in the non-display area on the first via insulating layer spaced apart from the first power supply wire, a first dam on the base substrate, overlapping the first and second power supply wires, and extending along the non-display area, a first stacked structure on the first via insulating layer between the first dam and the display area, and having a height less than a height of the first dam, and an organic layer on the first stacked structure and the first dam to overlap a substantially entire portion of the first stacked structure and at least a portion of the first dam. ## Claims ### Claim 1 A display apparatus comprising: a base substrate, wherein a display area, in which an image is displayed, and a non-display area adjacent to the display area are defined on the base substrate; a first via insulating layer disposed on the base substrate; a first power supply wire disposed in the non-display area on the first via insulating layer; a second power supply wire disposed in the non-display area on the first via insulating layer and spaced apart from the first power supply wire; a first dam disposed on the base substrate, wherein the first dam overlaps the first power supply wire and the second power supply wire, and extends along the non-display area; a first stacked structure disposed on the first via insulating layer between the first dam and the display area, wherein the first stacked structure has a height less than a height of the first dam; and an organic layer disposed on the first stacked structure and the first dam to overlap a substantially entire portion of the first stacked structure and at least a portion of the first dam. ### Claim 2 (depends on 1) The display apparatus of claim 1, further comprising: a second stacked structure disposed between the first stacked structure and the first dam. ### Claim 3 (depends on 2) The display apparatus of claim 2, further comprising: a second via insulating layer disposed on the first via insulating layer, wherein the first stacked structure includes a portion of the second via insulating layer, the first dam includes a portion of the second via insulating layer, and the second via insulating layer has a first height at the first dam, and a second height less than the first height at the first stacked structure. ### Claim 4 (depends on 3) The display apparatus of claim 3, further comprising: a pixel-defining layer disposed on the second via insulating layer, wherein the first stacked structure includes a portion of the pixel-defining layer, and the first dam includes a portion of the pixel-defining layer. ### Claim 5 (depends on 2) The display apparatus of claim 2, wherein a height of the first stacked structure is less than a height of the second stacked structure. ### Claim 6 (depends on 1) The display apparatus of claim 1, wherein the first stacked structure extends parallel to the first dam in a first direction. ### Claim 7 (depends on 1) The display apparatus of claim 1, wherein the first stacked structure is connected to the first dam such that the first stacked structure and the first dam form a step. ### Claim 8 (depends on 1) The display apparatus of claim 1, wherein the first stacked structure is spaced apart from the first power supply wire and the second power supply wire. ### Claim 9 (depends on 1) The display apparatus of claim 1, wherein a plurality of holes are defined through the first power supply wire and the second power supply wire, and the holes are located between the first stacked structure and the first dam. ### Claim 10 (depends on 1) The display apparatus of claim 1, further comprising: a first electrode disposed in the display area on the base substrate; a light-emitting layer disposed on the first electrode; and a second electrode disposed on the light-emitting layer, wherein the second electrode is disposed on the first stacked structure and the first dam to overlap a substantially entire portion of the first stacked structure and at least a portion of the first dam. ### Claim 11 A display apparatus comprising: a base substrate; a first conductive layer disposed on the base substrate, wherein the first conductive layer includes a source electrode and a drain electrode of a thin film transistor; a first via insulating layer disposed on the first conductive layer; a second conductive layer disposed on the first via insulating layer; a second via insulating layer disposed on the second conductive layer; a pixel-defining layer disposed on the second via insulating layer; a first inorganic layer disposed on the pixel-defining layer; and an organic layer disposed on the first inorganic layer, wherein a portion of the second via insulating layer and a portion of the pixel-defining layer constitute a first dam, a portion of the second via insulating layer and a portion of the pixel-defining layer constitute a first stacked structure having a height less than a height of the first dam, and the organic layer overlaps a substantially entire portion of the first stacked structure and at least a portion of the first dam. ### Claim 12 (depends on 11) The display apparatus of claim 11, wherein the second via insulating layer has a first height at the first dam, and a second height less than the first height at the first stacked structure. ### Claim 13 (depends on 11) The display apparatus of claim 11, wherein the first conductive layer includes a first layer of a first power supply wire, and a first layer of a second power supply wire, which is spaced apart from the first layer of the first power supply wire, the second conductive layer includes a second layer of the first power supply wire, and a second layer of the second power supply wire, which is spaced apart from the second layer of the first power supply wire, the first layer of the first power supply wire and the second layer of the first power supply wire are electrically connected to each other, and the first layer of the second power supply wire and the second layer of the second power supply wire are electrically connected to each other. ### Claim 14 (depends on 13) The display apparatus of claim 13, wherein a plurality of holes are defined through the second layer of the first power supply wire and the second layer of the second power supply wire, and wherein the holes are spaced apart from the first stacked structure, or partially overlap the first stacked structure. ### Claim 15 (depends on 11) The display apparatus of claim 11, further comprising: a spacer layer disposed on the pixel-defining layer, wherein a portion of the second via insulating layer, a portion of the pixel-defining layer, and a portion of the spacer layer constitute a second dam which is spaced apart from the first dam, and the first dam is located between the second dam and the first stacked structure. ### Claim 16 A method of manufacturing a display apparatus including a display area for displaying an image and a non-display area adjacent to the display area, the method comprising: providing a thin film transistor layer, which includes a thin film transistor and an insulating layer, on a base substrate; providing a first via insulating layer on the thin film transistor layer; providing a conductive layer, which includes a power supply wire, on the first via insulating layer; providing a second via insulating layer on the first via insulating layer, on which the conductive layer is provided; providing a first inorganic layer on the base substrate, on which the second via insulating layer is provided; providing an organic material onto the first inorganic layer; and inspecting a spreading degree of the organic material which spreads along a top surface of the first inorganic layer based on a visibility degree of an outer periphery of a first stacked structure, wherein a portion of the second via insulating layer constitutes a first dam disposed in the non-display area to surround the display area, and a portion of the second via insulating layer constitutes the first stacked structure disposed between the first dam and the display area in the non-display area. ### Claim 17 (depends on 16) The method of claim 16, wherein a portion of the second via insulating layer constitutes a second stacked structure disposed between the first stacked structure and the display area in the non-display area, and the inspecting the spreading degree of the organic material includes determining that the spreading degree of the organic material reaches a predetermined level when a visibility degree of an outer periphery of the second stacked structure is lowered after the visibility degree of the outer periphery of the first stacked structure is lowered. ### Claim 18 (depends on 17) The method of claim 17, further comprising: providing a pixel-defining layer on the second via insulating layer and the first via insulating layer, wherein the first dam includes a portion of the pixel-defining layer, the first stacked structure includes a portion of the pixel-defining layer, the second stacked structure includes a portion of the pixel-defining layer, and a height of the first dam is greater than a height of each of the first stacked structure and the second stacked structure. ### Claim 19 (depends on 18) The method of claim 18, further comprising: providing a first electrode in the display area on the second via insulating layer, on which the pixel-defining layer is formed; providing a light-emitting layer on the first electrode; and providing a second electrode on the light-emitting layer, wherein the second electrode overlaps a substantially entire portion of the first stacked structure and at least a portion of the first dam. ### Claim 20 (depends on 16) The method of claim 16, wherein a plurality of holes are formed through the power supply wire, and the holes are located between the first stacked structure and the first dam.