# US 2021/0242432 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 2021/0242432 A1 - Document ID: US20210242432A1 - Status: Published application - Kind: A1 - Application number: 17/117,627 - Filed: 2020-12-10 - Published: 2021-08-05 - Earliest claimed: 2020-02-04 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: GWANGTEAK LEE; Seongsik Choi; Yong-sik Jung; Yong-Sik Hwang - Web page: https://patentgrep.com/patent/US20210242432A1 ## CPC - H10K 59/353: {characterised by the geometrical arrangement of the RGB subpixels} - H10K 59/121: characterised by the geometry or disposition of pixel elements - H10K 59/879: {comprising refractive means, e.g. lenses} - H10K 59/8731: {multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers} - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract The present disclosure relates to a display device. The display device includes a substrate. The substrate includes a first display area, a second display area, a plurality of first pixels, a plurality of second pixels, and a plurality of diffraction patterns. The plurality of first pixels are disposed on the first display area. The plurality of second pixels are disposed on the second display area. The plurality of diffraction patterns are disposed on the second pixels When viewed in a plane orientation, an array density of the first pixels disposed in the first display area is greater than an array density of the second pixels disposed in the second display area. ## Claims ### Claim 1 A display device comprising: a substrate comprising a first display area and a second display area; a plurality of first pixels disposed on the first display area; a plurality of second pixels disposed on the second display area; and a plurality of diffraction patterns disposed on the second pixels, wherein an array density of the first pixels disposed in the first display area is greater than an array density of the second pixels disposed in the second display area when viewed in a plane. ### Claim 2 (depends on 1) The display device of claim 1, wherein distances between the diffraction patterns vary based on a distance from the first display area. ### Claim 3 (depends on 2) The display device of claim 2, wherein the distances between the diffraction patterns decrease as the distance from the first display area increases. ### Claim 4 (depends on 3) The display device of claim 3, wherein heights of the diffraction patterns increase from a boundary between the first display area and the second display area to a first point of the second display area and decrease from the first point to an edge of the second display area. ### Claim 5 (depends on 4) The display device of claim 4, wherein the second pixels are grouped into a plurality of pixel groups, and distances between the pixel groups increase as the distance from the first display area increases. ### Claim 6 (depends on 1) The display device of claim 1, wherein distances between the diffraction patterns increase as a distance from the first display area increases. ### Claim 7 (depends on 1) The display device of claim 1, wherein the diffraction patterns comprise an inorganic material. ### Claim 8 (depends on 1) The display device of claim 1, wherein each of the diffraction patterns has a cylindrical shape. ### Claim 9 (depends on 1) The display device of claim 1, wherein each of the diffraction patterns has a polygonal pillar shape. ### Claim 10 (depends on 1) The display device of claim 1, further comprising a thin-film encapsulation layer disposed on the first pixels and the second pixels, wherein the diffraction patterns are disposed on the thin-film encapsulation layer. ### Claim 11 (depends on 1) The display device of claim 1, further comprising at least one sensor disposed under the substrate and overlapping the second display area. ### Claim 12 A display device comprising: a substrate comprising a first display area and a second display area; a plurality of first pixels disposed on the first display area; a plurality of second pixels disposed on the second display area; and a plurality of diffraction patterns disposed on the second pixels, wherein an array density of the first pixels disposed in the first display area is greater than an array density of the second pixels disposed in the second display area when viewed in a plane, and heights of the diffraction patterns vary as a distance from the first display area increases. ### Claim 13 (depends on 12) The display device of claim 12, wherein the heights of the diffraction patterns increase from a boundary between the first display area and the second display area to a first point of the second display area and decrease from the first point to an end of the second display area. ### Claim 14 (depends on 12) The display device of claim 12, wherein the heights of the diffraction patterns increase as the distance from the first display area increases. ### Claim 15 (depends on 12) The display device of claim 12, further comprising a thin-film encapsulation layer disposed on the first pixels and the second pixels, wherein the diffraction patterns are disposed on the thin-film encapsulation layer. ### Claim 16 (depends on 12) The display device of claim 12, wherein distances between the diffraction patterns are uniformly maintained. ### Claim 17 A display device comprising: a substrate comprising a first display area and a second display area; a plurality of first pixels disposed on the first display area; a plurality of second pixels disposed on the second display area; and a plurality of diffraction patterns disposed on the second pixels, wherein the first pixels are grouped into a plurality of first pixel groups, the second pixels are grouped into a plurality of second pixel groups, an array density of the first pixels disposed in the first display area is greater than an array density of the second pixels disposed in the second display area when viewed in a plane, and distances between the second pixel groups vary as a distance from the first display area increases. ### Claim 18 (depends on 17) The display device of claim 17, wherein the distances between the second pixel groups increase as the distance from the first display area increases. ### Claim 19 (depends on 17) The display device of claim 17, wherein distances between the diffraction patterns are uniformly maintained. ### Claim 20 (depends on 17) The display device of claim 17, wherein the distances between the diffraction patterns vary based on the distance from the first display area.