# US 12,765,141 B2 · Display apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,765,141 B2 - Document ID: US12765141B2 - Status: Granted - Kind: B2 - Application number: 18/451,814 - Filed: 2023-08-17 - Published: 2024-10-10 - Granted: 2026-10-13 - Earliest claimed: 2023-04-06 - Assignees: AUO Corporation - Applicants: AUO Corporation - Inventors: Hsin Chiang Chiang; Pao-Yu Huang - Web page: https://patentgrep.com/patent/US12765141B2 ## CPC - H10H 20/856: Reflecting means - H10W 90/00: Package configurations - 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 apparatus includes a driving circuit substrate, a plurality of light emitting devices, a filler, a color filter substrate, a first bank layer, a plurality of color conversion patterns, and a plurality of reflective structures. The light emitting devices are disposed on the driving circuit substrate. The filler is disposed on the light emitting devices. The color filter substrate is disposed opposite to the driving circuit substrate. The first bank layer is located between the color filter substrate and the filler. The color conversion patterns are respectively disposed in a plurality of openings of the first bank layer. The reflective structures are disposed on the driving circuit substrate and located between the light emitting devices and the driving circuit substrate. Each reflective structure has a reflective concave surface caved toward the driving circuit substrate. A reflectivity of the reflective structure falls within a range from 95% to 98%. ## Claims ### Claim 1 A display apparatus, comprising: a driving circuit substrate; a plurality of light emitting devices, disposed on the driving circuit substrate and electrically connected to the driving circuit substrate; a filler, disposed on the light emitting devices; a color filter substrate, disposed opposite to the driving circuit substrate and having a plurality of color filter patterns, wherein the color filter patterns are overlapped with the light emitting devices; a first bank layer, located between the color filter substrate and the filler, wherein the first bank layer has a plurality of openings respectively overlapped with the color filter patterns and a body defining the openings; a plurality of color conversion patterns, respectively disposed in the openings of the first bank layer; a plurality of reflective structures, disposed on the driving circuit substrate and located between the light emitting devices and the driving circuit substrate, wherein a plurality of electrodes of each of the light emitting devices contact corresponding one of the reflective structures, the material of each of the reflective structures comprises epoxy resins, an ethylene compound, a benzoic acid, or a combination of at least two of the above materials, and a reflectivity of the reflective structures falls within a range from 95% to 98%, wherein each of the reflective structures has: a reflective concave surface caved toward the driving circuit substrate and having a boundary of a reflection range; and a lowest point closest to the driving circuit substrate, wherein a first reference line passes through the lowest point and is perpendicular to a base of the driving circuit substrate, a second reference line passes through a curvature center of the reflective concave surface and the boundary of the reflection range, an included angle exists between the first reference line and the second reference line, the included angle is approximately 45°, and at least one portion of one of the light emitting devices falls on and overlaps the curvature center of the reflective concave surface. ### Claim 2 (depends on 1) The display apparatus according to claim 1, wherein a minimum thickness of the reflective structures falls within a range from 2 μm to 4 μm. ### Claim 3 (depends on 1) The display apparatus according to claim 1, wherein a curvature radius of the reflective concave surface falls within a range from 16 mm to 18 mm. ### Claim 4 (depends on 1) The display apparatus according to claim 1, further comprising: a second bank layer, disposed on the driving circuit substrate and located between the filler and the driving circuit substrate, wherein the second bank layer has a plurality of openings and a body, the body of the second bank layer defines the openings of the second bank layer, and the light emitting devices and the curvature centers of the reflective concave surfaces of the reflective structures are completely disposed within corresponding openings of the second bank layer. ### Claim 5 (depends on 4) The display apparatus according to claim 4, wherein the body of the second bank layer has a sidewall, and the reflective structures cover a first portion of the sidewall close to the driving circuit substrate and expose a second portion of the sidewall away from the driving circuit substrate. ### Claim 6 (depends on 4) The display apparatus according to claim 4, wherein the body of the second bank layer has a top surface, one of the reflective structures has an end point away from the driving circuit substrate, and the end point of the one of the reflective structures is spaced from the top surface of the second bank layer by a distance. ### Claim 7 (depends on 4) The display apparatus according to claim 4, wherein the filler is disposed between the first bank layer and the second bank layer, and the filler is partially overlapped with the reflective structures. ### Claim 8 (depends on 7) The display apparatus according to claim 7, further comprising: a first insulation layer, located between the first bank layer and the filler and between the color conversion patterns and the filler, wherein the first insulation layer is partially overlapped with the reflective structures. ### Claim 9 (depends on 1) The display apparatus according to claim 1, further comprising: a second insulation layer, located between the color filter substrate and the first bank layer and between the color filter substrate and the color conversion patterns, wherein the second insulation layer is partially overlapped with the reflective structures. ### Claim 10 (depends on 9) The display apparatus according to claim 9, further comprising: a protection layer, located between the color filter substrate and the second insulation layer, wherein the protection layer is partially overlapped with the reflective structures. ### Claim 11 (depends on 1) The display apparatus according to claim 1, wherein the color filter patterns comprise a first color filter pattern, a second color filter pattern, and a third color filter pattern, and the reflective structures are respectively overlapped with the first color filter pattern and the second color filter pattern and are staggered with the third color filter pattern. ### Claim 12 (depends on 1) The display apparatus according to claim 1, further comprising: a second bank layer, disposed on the driving circuit substrate and located between the filler and the driving circuit substrate, wherein the second bank layer has a plurality of openings and a body, the body of the second bank layer defines the openings of the second bank layer, and the light emitting devices and the reflective structures are disposed in the openings of the second bank layer, wherein the color filter patterns comprise a first color filter pattern, a second color filter pattern, and a third color filter pattern, wherein the openings of the second bank layer comprise a first opening and a second opening, the first opening of the second bank layer is overlapped with the first color filter pattern along a z direction perpendicular to the base of the driving circuit substrate, the second opening of the second bank layer is overlapped with both of the second color filter pattern and the third color filter pattern along the z direction, the light emitting devices comprise a first light emitting device and a second light emitting device, the first light emitting device and the second light emitting device are respectively disposed in the first opening and the second opening of the second bank layer, a light emitting wavelength of the second light emitting device is shorter than a light emitting wavelength of the first light emitting device, and the reflective concave surface of one of the reflective structures in the second opening of the second bank layer is overlapped with both of the second color filter pattern and the third color filter pattern along the z direction. ### Claim 13 (depends on 12) The display apparatus according to claim 12, wherein the body of the second bank layer has a sidewall defining the second opening, the sidewall comprises a first sub-sidewall and a second sub-sidewall opposite to each other, the second light emitting device is spaced from the first sub-sidewall by a first distance, the second light emitting device is spaced from the second sub-sidewall by a second distance, the first distance is greater than the second distance, and the light emitting wavelength of the first light emitting device falls within a range from 450 nm to 490 nm and the light emitting wavelength of the second light emitting device falls within a range from 440 nm to 450 nm.