# US 2021/0343784 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 2021/0343784 A1 - Document ID: US20210343784A1 - Status: Published application - Kind: A1 - Application number: 17/285,689 - Filed: 2019-04-15 - Published: 2021-11-04 - Earliest claimed: 2018-10-16 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Jin Oh KWAG; Jong Hyuk KANG; Keun Kyu SONG; Sung-Chan JO; Hyun Min CHO - Web page: https://patentgrep.com/patent/US20210343784A1 ## CPC - H10H 29/142: {Two-dimensional arrangements, e.g. asymmetric LED layout} - H10W 90/00: Package configurations - H10D 30/6723: {having light shields} - H10D 86/40: characterised by multiple TFTs - H10D 86/60: wherein the TFTs are in active matrices - H10H 20/821: of the light-emitting regions, e.g. non-planar junctions - H10H 20/831: characterised by their shape - H10H 20/857: Interconnections, e.g. lead-frames, bond wires or solder balls - H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 - H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES ## Abstract A display device comprises a substrate including a display area and a non-display area, and pixels disposed in the display area, each of the pixels including sub-pixels. Each of sub-pixels includes a pixel circuit layer, and a display element layer including at least one light emitting element. The display element layer includes first and second electrodes spaced apart from each other, the light emitting element disposed between the first electrode and second electrode, a first contact electrode that electrically connects an end of the light emitting element to the first electrode, and a second contact electrode that electrically connects another end of the light emitting element to the second electrode. Each of sub-pixels includes a first area in which the pixel circuit layer is disposed, and a second area adjacent to the first area. The second area includes a transmission area through which the light passes. ## Claims ### Claim 1 A display device comprising: a substrate including a display area and a non-display area; and pixels disposed in the display area, and each of the pixels including sub-pixels, wherein each of the sub-pixels comprises: a pixel circuit layer; and a display element layer including at least one light emitting element that emits light, the display element layer comprises: first and second electrodes disposed on a same surface and spaced apart from each other; the at one light emitting element disposed between the first electrode and the second electrode; a first contact electrode that electrically connects an end of the at least one light emitting element to the first electrode; and a second contact electrode that electrically connects another end of the at least one light emitting element to the second electrode, and each of the sub-pixels includes: a first area in which the pixel circuit layer is disposed; and a second area adjacent to the first area, the second area including a transmission area through which the light passes. ### Claim 2 (depends on 1) The display device according to claim 1, wherein a light transmissivity of the second area is higher than a light transmissivity of the first area. ### Claim 3 (depends on 2) The display device according to claim 2, wherein the display element layer is disposed in at least one of the first area and the second area. ### Claim 4 (depends on 3) The display device according to claim 3, wherein the display element layer comprises: a first capping layer disposed on the first electrode and electrically connected to the first electrode; and a second capping layer disposed on the second electrode and electrically connected to the second electrode, wherein the first capping layer and the second capping layer are made of transparent conductive material. ### Claim 5 (depends on 4) The display device according to claim 4, wherein the pixel circuit layer comprises: at least one transistor disposed on the substrate and electrically connected to the at least one light emitting element; a driving voltage line disposed on the substrate and extending from the first area to the second area; and a passivation layer disposed over the transistor and the driving voltage line. ### Claim 6 (depends on 5) The display device according to claim 5, wherein the display element layer is disposed in each of the first area and the second area. ### Claim 7 (depends on 6) The display device according to claim 6, wherein the first electrode and the second electrode extend from the first area to the second area. ### Claim 8 (depends on 6) The display device according to claim 6, wherein the first electrode and the second electrode are disposed in each of the first area and the second area, the first electrode disposed in the first area and the first electrode disposed in the second area are spaced apart from each other, and the second electrode disposed in the first area and the second electrode disposed in the second area are spaced apart from each other. ### Claim 9 (depends on 8) The display device according to claim 8, wherein in each of the sub-pixels, the first capping layer extends from the first area to the second area and electrically connects the first electrode of the first area to the first electrode of the second area, and in each of the sub-pixels, the second capping layer extends from the first area to the second area and electrically couples the second electrode of the first area to the second electrode of the second area. ### Claim 10 (depends on 5) The display device according to claim 5, wherein the display element layer is disposed in the first area and overlaps the pixel circuit layer. ### Claim 11 (depends on 10) The display device according to claim 10, wherein the display element layer further comprises a connection line that electrically connects the driving voltage line to the second electrode. ### Claim 12 (depends on 11) The display device according to claim 11, wherein the connection line and the second capping layer are integral with each other. ### Claim 13 (depends on 11) The display device according to claim 11, wherein the connection line and the second electrode are integral with each other. ### Claim 14 (depends on 5) The display device according to claim 5, wherein the second area comprises: a 2-1th area in which the display element layer is disposed, and a 2-2th area adjacent to the 2-1th area, and the display element layer is not disposed in the 2-2th area. ### Claim 15 (depends on 14) The display device according to claim 14, further comprising an additional conductive pattern that electrically connects the driving voltage line to the second electrode and is disposed in the second area. ### Claim 16 (depends on 15) The display device according to claim 15, wherein the additional conductive pattern and the driving voltage line are integral with each other, and The additional conductive pattern is electrically connected to the second electrode through a contact hole passing through the passivation layer. ### Claim 17 (depends on 5) The display device according to claim 5, wherein a light shielding layer is disposed in the first area of each of the sub-pixels, and the light shielding layer is disposed between the substrate and the transistor. ### Claim 18 (depends on 17) The display device according to claim 17, wherein the light shielding layer blocks light from a rear surface of the substrate. ### Claim 19 (depends on 1) The display device according to claim 1, wherein the at least one light emitting element comprises a light emitting diode having a shape of a cylinder or polyprism and having a microscale or nanoscale size. ### Claim 20 A display device comprising: a substrate including a display area and a non-display area; and pixels disposed in the display area, each of the pixels comprising sub-pixels, wherein each of the sub-pixels comprises: first and second areas adjacent to each other; a pixel circuit layer disposed in the first area; and a display element layer including at least one light emitting element that emits light, wherein the display element layer comprises: first and second electrodes disposed on each of the first and the second areas, and spaced apart from each other; the at least one light emitting element disposed between the first electrode and the second electrode in each of the first and the second areas; a capping layer disposed on each of the first and the second electrodes and extending from the first area to the second area; a first contact electrode that electrically connects an end of the at least one light emitting element to the first electrode in each of the first and the second areas; and a second contact electrode that electrically connects another end of the at least one light emitting element to the second electrode in each of the first and the second areas, and the second area includes a transmission area through which the light passes.