# US 2019/0319201 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 2019/0319201 A1 - Document ID: US20190319201A1 - Status: Published application - Kind: A1 - Application number: 16/293,504 - Filed: 2019-03-05 - Published: 2019-10-17 - Earliest claimed: 2018-04-16 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Ye Chan GOH; Byung Hoon CHAE; Gil Jae CHOI; Seung Kyun HONG - Web page: https://patentgrep.com/patent/US20190319201A1 ## CPC - H10K 59/131: Interconnections, e.g. wiring lines or terminals - B32B 3/263: {characterised by a layer having non-uniform thickness} - B32B 3/30: characterised by a layer formed with recesses or projections, e.g. {hollows, grooves, protuberances, ribs (apertured layer B32B3/266; layer with cavities or internal voids B32B3/26)} - H10K 77/111: {Flexible substrates} - H10K 59/122: Pixel-defining structures or layers, e.g. banks - H10K 59/124: Insulating layers formed between TFT elements and OLED elements - H10K 59/873: {Encapsulations} - H10K 2102/311: {Flexible OLED} - Y02E 10/549: Organic PV cells - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A display device having a display area and a non-display area disposed in the vicinity of the display area and including a bending area, the display device includes: a substrate; a first organic insulating layer disposed on the substrate; and a trench structure disposed in the non-display area, the trench structure including sidewalls formed by the first organic insulating layer and a bottom surface located in the bending area, wherein the bending area is disposed on a side of the display area. ## Claims ### Claim 1 A display device having a display area and a non-display area disposed in a vicinity of the display area and comprising a bending area, the display device comprising: a substrate; a first organic insulating layer disposed on the substrate; and a trench structure disposed in the non-display area, the trench structure comprising sidewalls formed by the first organic insulating layer and a bottom surface located in the bending area, wherein the bending area is disposed on a side of the display area. ### Claim 2 (depends on 1) The display device of claim 1, further comprising: a first bending connection area disposed on a first side of the bending area and located between the bending area and the display area; and a second bending connection area disposed on a second side of the bending area. ### Claim 3 (depends on 2) The display device of claim 2, wherein the sidewalls of the trench structure comprise a first sidewall disposed on a first side of the trench structure and a second sidewall disposed on a second side of the trench structure. ### Claim 4 (depends on 3) The display device of claim 3, wherein the first sidewall is located in the first bending connection area, and the second sidewall is located in the second bending connection area. ### Claim 5 (depends on 3) The display device of claim 3, wherein the first sidewall is located at a boundary between the bending area and the first bending connection area, and wherein the second sidewall is located at a boundary between the bending area and the second bending connection area. ### Claim 6 (depends on 3) The display device of claim 3, wherein the first and second sidewalls are located in the bending area. ### Claim 7 (depends on 1) The display device of claim 1, further comprising: a second organic insulating layer disposed between the first organic insulating layer and the substrate. ### Claim 8 (depends on 7) The display device of claim 7, wherein the bottom surface of the trench structure is formed by the second organic insulating layer. ### Claim 9 (depends on 7) The display device of claim 7, wherein the bottom surface of the trench structure is formed by the first organic insulating layer, and wherein a thickness of the first organic insulating layer at the bottom surface of the trench structure is smaller than a thickness of the first organic insulating layer on the sidewalls of the trench structure. ### Claim 10 (depends on 9) The display device of claim 9, wherein the bottom surface of the trench structure comprises an uneven structure. ### Claim 11 (depends on 9) The display device of claim 9, wherein the bottom surface of the trench structure comprises a concavely curved surface. ### Claim 12 (depends on 1) The display device of claim 1, wherein the display device comprises a first side extending along a first direction and a second side extending along a second direction intersecting the first direction, and wherein the bending area is located in the first direction with respect to the display area. ### Claim 13 (depends on 12) The display device of claim 12, wherein a width of the trench structure, in the second direction, is the same as a width of the bending area, in the second direction. ### Claim 14 (depends on 12) The display device of claim 12, wherein the trench structure comprises a plurality of sub-trench structures isolated from one another in the second direction. ### Claim 15 (depends on 12) The display device of claim 12, wherein the trench structure comprises a plurality of sub-trench structures isolated from one another in the first direction. ### Claim 16 (depends on 1) The display device of claim 1, further comprising: an inorganic insulating layer disposed between the first organic insulating layer and the substrate, the inorganic insulating layer comprising an inorganic insulating opening, which exposes the substrate, wherein the inorganic insulating opening overlaps with the trench structure. ### Claim 17 (depends on 16) The display device of claim 16, further comprising: a third organic insulating layer filling the inorganic insulating opening and disposed between the substrate and the first organic insulating layer. ### Claim 18 (depends on 16) The display device of claim 16, wherein the trench structure completely overlaps with the inorganic insulating opening. ### Claim 19 A display device having a display area and a non-display area, the display device comprising: a substrate having a bending area in the non-display area; a first insulating layer disposed on the substrate; a first opening formed in the first insulating layer exposing the substrate and overlapping with the bending area; a second insulating layer filling the first opening; a first organic material layer disposed on the second insulating layer and overlapping with the bending area; and a second organic material layer disposed on the first organic material layer, the second organic material layer comprising a second opening, which overlaps with the bending area. ### Claim 20 (depends on 19) The display device of claim 19, further comprising: a protective film disposed on a rear surface of the substrate and not overlapping with the bending area.