# US 2023/0054810 A1 · Display device 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 2023/0054810 A1 - Document ID: US20230054810A1 - Status: Published application - Kind: A1 - Application number: 17/692,660 - Filed: 2022-03-11 - Published: 2023-02-23 - Earliest claimed: 2021-08-23 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: KYUNGHOON CHAE; DAEWOO LEE; YUNJEONG CHO; HYEON DEUK HWANG; DOHYUNG RYU - Web page: https://patentgrep.com/patent/US20230054810A1 ## CPC - H10K 59/873: {Encapsulations} - H10K 71/00: Manufacture or treatment specially adapted for the organic devices covered by this subclass - H10K 59/12: Active-matrix OLED [AMOLED] displays - H10K 59/1201: {Manufacture or treatment} - H10K 59/131: Interconnections, e.g. wiring lines or terminals - H10K 77/111: {Flexible substrates} - H10K 2102/311: {Flexible OLED} - Y02E 10/549: Organic PV cells - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A display device includes: a substrate including a display area, a pad area, and a bending area, where the bending area is positioned between the display area and the pad area, is bent from the display area, and is divided into a first area and a second area surrounding the first area; a protection film disposed on the substrate to overlap the display area, the pad area, and the second area, where an opening overlapping the first area is defined in the protection film; and a reinforcing agent disposed in the opening. ## Claims ### Claim 1 A display device comprising: a substrate including a display area, a pad area, and a bending area, wherein the bending area is positioned between the display area and the pad area, is bent from the display area, and is divided into a first area and a second area surrounding the first area; a protection film disposed on the substrate to overlap the display area, the pad area, and the second area, wherein an opening overlapping the first area is defined in the protection film; and a reinforcing agent disposed in the opening. ### Claim 2 (depends on 1) The display device of claim 1, wherein the opening is defined through the protection film. ### Claim 3 (depends on 1) The display device of claim 1, wherein the opening does not overlap the second area. ### Claim 4 (depends on 1) The display device of claim 1, wherein the reinforcing agent overlaps the first area. ### Claim 5 (depends on 1) The display device of claim 1, wherein the reinforcing agent does not overlap the second area. ### Claim 6 (depends on 1) The display device of claim 1, further comprising: a display panel disposed on a first surface of the substrate and overlapping the display area; and a pad part disposed on the first surface of the substrate and overlapping the pad area, and wherein the protection film is disposed on a second surface of the substrate opposite to the first surface of the substrate. ### Claim 7 (depends on 6) The display device of claim 6, further comprising: a line connected between the display panel and the pad part, wherein the line overlaps the first area. ### Claim 8 (depends on 6) The display device of claim 6, wherein the display panel includes: a transistor electrically connected to the pad part; a first electrode disposed on the transistor and connected to the transistor; an organic emission layer disposed on the first electrode; a second electrode disposed on the organic emission layer; and an encapsulation layer disposed on the second electrode and including an inorganic layer and an organic layer. ### Claim 9 (depends on 1) The display device of claim 1, wherein the reinforcing agent has a rectangular shape with rounded corners. ### Claim 10 (depends on 1) The display device of claim 1, wherein the reinforcing agent is disposed along a curvature of a curved side of the bending area. ### Claim 11 (depends on 1) The display device of claim 1, wherein the reinforcing agent includes a first reinforcing agent and a second reinforcing agent spaced apart from the first reinforcing agent. ### Claim 12 (depends on 1) The display device of claim 1, wherein the reinforcing agent comprises a resin. ### Claim 13 (depends on 1) The display device of claim 1, wherein the protection film includes: a base layer; and an adhesive layer disposed between the substrate and the base layer, wherein the adhesive layer adheres the base layer to the substrate. ### Claim 14 (depends on 13) The display device of claim 13, wherein the opening is defined through the base layer and the adhesive layer. ### Claim 15 A method of manufacturing a display device, the method comprising: preparing a substrate including a display area, a pad area, and a bending area, wherein the bending area is positioned between the display area and the pad area, is divided into a first area and a second area surrounding the first area, and is bent from the display area; preparing a protection film in which an opening is defined to correspond to the first area of the bending area; adhering the protection film to the display area, the pad area, and the second area of the substrate, wherein the opening overlaps the first area; and providing a reinforcing agent in the opening. ### Claim 16 (depends on 15) The method of claim 15, wherein the opening is formed through the protection film. ### Claim 17 (depends on 15) The method of claim 15, wherein the opening does not overlap the second area. ### Claim 18 (depends on 15) The method of claim 15, wherein the reinforcing agent overlaps the first area. ### Claim 19 (depends on 15) The method of claim 15, wherein the reinforcing agent does not overlap the second area. ### Claim 20 (depends on 15) The method of claim 15, wherein the reinforcing agent comprises a resin.