# US 2020/0403129 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 2020/0403129 A1 - Document ID: US20200403129A1 - Status: Published application - Kind: A1 - Application number: 16/742,795 - Filed: 2020-01-14 - Published: 2020-12-24 - Earliest claimed: 2019-06-19 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Ji Hye LEE; Kyung Bae KIM; Yu Jin LEE; Chong Chul CHAI - Web page: https://patentgrep.com/patent/US20200403129A1 ## CPC - H10H 20/855: Optical field-shaping means, e.g. lenses - H10H 20/821: of the light-emitting regions, e.g. non-planar junctions - H10H 20/8312: {extending at least partially through the bodies} - H10H 20/856: Reflecting means - H10H 20/857: Interconnections, e.g. lead-frames, bond wires or solder balls - H10W 90/00: Package configurations - H10H 20/819: characterised by their shape, e.g. curved or truncated substrates - H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 ## Abstract A display device includes: a base layer; a pixel circuit layer on the base layer; and a display element layer on the pixel circuit layer. The pixel circuit layer includes a lens pattern at a recess between the display element layer and the base layer, the display element layer includes a light emitting element, and at least a portion of the light emitting element overlaps with the lens pattern. ## Claims ### Claim 1 A display device comprising: a base layer; a pixel circuit layer on the base layer; and a display element layer on the pixel circuit layer, wherein the pixel circuit layer comprises a lens pattern at a recess between the display element layer and the base layer, and wherein the display element layer comprises a light emitting element, and at least a portion of the light emitting element overlaps with the lens pattern. ### Claim 2 (depends on 1) The display device of claim 1, wherein the display element layer comprises a first electrode and a second electrode spaced from the first electrode, and the light emitting element is between the first electrode and the second electrode. ### Claim 3 (depends on 2) The display device of claim 2, wherein the light emitting element comprises a first semiconductor layer, an active layer surrounding at least a portion of the first semiconductor layer, and a second semiconductor layer of a different type from that of the first semiconductor layer and surrounding at least a portion of the active layer. ### Claim 4 (depends on 3) The display device of claim 3, wherein the light emitting element comprises a first end portion and a second end portion, the first end portion comprising the active layer, and the second end portion not comprising the active layer. ### Claim 5 (depends on 4) The display device of claim 4, wherein the display element layer comprises a first contact electrode on the first electrode and electrically connected to the first end portion, and a second contact electrode on the second electrode and electrically connected to the second end portion. ### Claim 6 (depends on 2) The display device of claim 2, wherein the pixel circuit layer comprises a plurality of transistors and an organic layer covering the plurality of transistors, the organic layer comprising the lens pattern. ### Claim 7 (depends on 6) The display device of claim 6, wherein the display element layer further comprises an insulating layer covering the first electrode, the second electrode, and the organic layer, and wherein a refractive index of the insulating layer is greater than a refractive index of the organic layer. ### Claim 8 (depends on 6) The display device of claim 6, wherein the lens pattern comprises an uneven pattern, and wherein the uneven pattern is configured to reflect an incident light irregularly. ### Claim 9 (depends on 2) The display device of claim 2, wherein the first electrode and the second electrode do not overlap with the lens pattern. ### Claim 10 (depends on 9) The display device of claim 9, wherein a width of the lens pattern is less than a length of the light emitting element. ### Claim 11 (depends on 10) The display device of claim 10, wherein the lens pattern corresponds one-to-one with the light emitting element. ### Claim 12 (depends on 2) The display device of claim 2, wherein a width of the lens pattern is greater than or equal to twice a length of the light emitting element. ### Claim 13 A display device comprising: a base layer; a pixel circuit layer on the base layer; and a display element layer on the pixel circuit layer, wherein the pixel circuit layer comprises a lens pattern comprising a plurality of taper portions, and wherein the display element layer comprises a light emitting element, and at least a portion of the light emitting element overlaps with the lens pattern. ### Claim 14 (depends on 13) The display device of claim 13, wherein the display element layer comprises a first electrode and a second electrode spaced from the first electrode, and the light emitting element is between the first electrode and the second electrode. ### Claim 15 (depends on 14) The display device of claim 14, wherein the light emitting element comprises a first semiconductor layer, an active layer surrounding at least a portion of the first semiconductor layer, and a second semiconductor layer of a different type from that of the first semiconductor layer and surrounding at least a portion of the active layer. ### Claim 16 (depends on 15) The display device of claim 15, wherein the light emitting element comprises a first end portion and a second end portion, the first end portion comprising the active layer, and the second end portion not comprising the active layer. ### Claim 17 (depends on 14) The display device of claim 14, wherein the plurality of taper portions comprises a first taper portion and a second taper portion spaced from the first taper portion, and wherein a taper angle of the first taper portion is different from a taper angle of the second taper portion. ### Claim 18 (depends on 17) The display device of claim 17, wherein the pixel circuit layer comprises a plurality of transistors and a metal layer on the plurality of transistors, the metal layer comprising the lens pattern and electrically connected to at least one of the plurality of transistors. ### Claim 19 (depends on 18) The display device of claim 18, wherein the metal layer comprises at least one of silver (Ag), magnesium (Mg), aluminum (Al), platinum (Pt), palladium (Pd), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr), titanium (Ti), or an alloy thereof. ### Claim 20 (depends on 19) The display device of claim 19, wherein a width of the lens pattern is less than or equal to a length of the light emitting element.