# US 10,770,442 B2 · Display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,770,442 B2 - Document ID: US10770442B2 - Status: Granted - Kind: B2 - Application number: 16/475,648 - Filed: 2018-01-08 - Published: 2019-12-05 - Granted: 2020-09-08 - Earliest claimed: 2017-01-17 - Assignees: OSRAM OLED GmbH - Applicants: OSRAM OLED GmbH - Inventors: Lorenzo Zini; Martin Rudolf Behringer - Web page: https://patentgrep.com/patent/US10770442B2 ## CPC - H10W 90/00: Package configurations - H10H 20/8512: {Wavelength conversion materials} - H10H 20/855: Optical field-shaping means, e.g. lenses - H10H 29/142: {Two-dimensional arrangements, e.g. asymmetric LED layout} - H10H 20/0363: {of optical field-shaping means} - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 - H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS ## Abstract A display device is disclosed. In an embodiment a display device includes a carrier including a plurality of switches, a semiconductor layer sequence arranged on the carrier, the semiconductor layer sequence comprising an active region configured to generate primary radiation and forming a plurality of pixels, wherein each switch is configured to control at least one pixel and an optical element arranged on each pixel on a radiation exit surface of the semiconductor layer sequence facing away from the carrier. ## Claims ### Claim 1 A display device comprising: a carrier comprising a plurality of switches; a semiconductor layer sequence arranged on the carrier, the semiconductor layer sequence comprising an active region configured to generate primary radiation and forming a plurality of pixels, wherein each switch is configured to control at least one pixel; an optical element arranged on each pixel on a radiation exit surface of the semiconductor layer sequence facing away from the carrier; and separating bodies on a top side of each pixel in direct contact with the pixel, wherein the separating bodies are impermeable to radiation emitted during operation of the display device, each separating body completely surrounding the optical element in a lateral direction, and wherein the top side of each pixel is free of the separating body in places where the pixel is covered by the optical element. ### Claim 2 (depends on 1) The display device according to claim 1, wherein the optical element is a lens. ### Claim 3 (depends on 1) The display device according to claim 1, wherein each pixel, on a side facing the carrier, has a connection area in which the pixels are electrically contacted, and wherein, in plan view of the display device, a surface of the connection area is at most 10% of a surface of the corresponding optical element. ### Claim 4 (depends on 1) The display device according to claim 1, further comprising a wherein each separating body is arranged between two adjacent optical elements. ### Claim 5 (depends on 4) The display device according to claim 4, wherein the optical element and the separating body are adapted to each another with respect to their materials in such a way that a material of the separating body acts as a dewetting agent for a material of the optical element in a liquid state. ### Claim 6 (depends on 1) The display device according to claim 1, wherein the display device is free of a bonding layer causing a cohesive connection between the radiation exit surface and the optical element. ### Claim 7 (depends on 1) The display device according to claim 1, wherein side surfaces of the pixels comprises a radiation-impermeable coating. ### Claim 8 (depends on 7) The display device according to claim 7, wherein the radiation-impermeable coating has a reflectivity of at least 60% for the radiation emitted during operation of the display device. ### Claim 9 (depends on 7) The display device according to claim 7, wherein the radiation-impermeable coating is electrically isolated from the pixels. ### Claim 10 (depends on 7) The display device according to claim 7, wherein the pixels are electrically contacted by the radiation-impermeable coating. ### Claim 11 (depends on 1) The display device according to claim 1, further comprising a first contact layer arranged on the radiation exit surface of the pixels. ### Claim 12 (depends on 1) The display device according to claim 1, wherein the semiconductor layer sequence between adjacent pixels is completely separated. ### Claim 13 (depends on 1) The display device according to claim 1, wherein the optical element is a radiation conversion element configured to at least partially convert the primary radiation into secondary radiation. ### Claim 14 (depends on 13) The display device according to claim 13, further comprising a carrier body arranged on the radiation exit surface, wherein the carrier body extends over a plurality of pixels, and wherein each radiation conversion element is arranged in depressions of the carrier body. ### Claim 15 (depends on 14) The display device according to claim 14, wherein the carrier body between adjacent radiation conversion elements is radiation-impermeable. ### Claim 16 A display device comprising: a carrier comprising a plurality of switches; a semiconductor layer sequence arranged on the carrier, the semiconductor layer sequence comprising an active region configured to generate radiation and forming a plurality of pixels, wherein each switch is configured to control at least one pixel; an optical element arranged on each pixel on a radiation exit surface of the semiconductor layer sequence facing away from the carrier; side surfaces of the pixels comprise a radiation-impermeable coating; and separating bodies on a top side of each pixel in direct contact with the pixel, wherein the separating bodies are impermeable to radiation emitted during operation of the display device, each separating body completely surrounding the optical element in a lateral direction, wherein the top side of each pixel is free of the separating body in places where the pixel is covered by the optical element. ### Claim 17 A display device comprising: a carrier comprising a plurality of switches; a semiconductor layer sequence arranged on the carrier, the semiconductor layer sequence comprising an active region configured to generate radiation and forming a plurality of pixels, wherein each switch configured to control at least one pixel; and an optical element arranged on each pixel on a radiation exit surface of the semiconductor layer sequence facing away from the carrier, wherein each pixel on a side facing the carrier has a connection area in which the pixel is electrically contacted, and wherein, in plan view of the display device, a surface area of the connection area is at most 10% of a surface area of the corresponding optical element. ### Claim 18 (depends on 16) The display device according to claim 16, wherein the optical element is a lens.