# US 12,765,138 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 12,765,138 B2 - Document ID: US12765138B2 - Status: Granted - Kind: B2 - Application number: 18/397,556 - Filed: 2023-12-27 - Published: 2025-02-20 - Granted: 2026-10-13 - Earliest claimed: 2023-08-15 - Assignees: AUO Corporation - Applicants: AUO Corporation - Inventors: Chun-Chieh Li; Sheng-Ming Huang; Han-Sheng Nian; Yu-Cheng Shih; Hsin-Hung Li - Web page: https://patentgrep.com/patent/US12765138B2 ## CPC - H10H 20/855: Optical field-shaping means, e.g. lenses - H10H 20/82: Roughened surfaces, e.g. at the interface between epitaxial layers - 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 backplane, a plurality of light emitting components, a first bank layer and a plurality of scattering particles. The first bank layer is disposed on the driving backplane. The first bank layer has a plurality of first openings and a plurality of oblique surfaces defining the first openings. The light emitting components respectively overlap with the first openings of the first bank layer. The scattering particles are disposed on a plurality of light emitting surfaces of the light emitting components. A plurality of air gaps exist between the scattering particles and the oblique surfaces of the first bank layer. ## Claims ### Claim 1 A display apparatus, comprising: a driving backplane; a plurality of light emitting components, disposed on the driving backplane, and electrically connected to the driving backplane; a first bank layer, disposed on the driving backplane, wherein the first bank layer has a plurality of first openings and a plurality of oblique surfaces defining the first openings, the light emitting components respectively overlap with the first openings of the first bank layer, and the oblique surfaces of the first bank layer are oblique relative to the driving backplane; and a plurality of scattering particles, disposed on a plurality of light emitting surfaces of the light emitting components, wherein the scattering particles are in direct contact with the light emitting surfaces of the light emitting components, and a plurality of air gaps exist between the scattering particles and the oblique surfaces of the first bank layer. ### Claim 2 (depends on 1) The display apparatus according to claim 1, wherein a refractive index of one of the scattering particles is between a refractive index of one of the air gaps and a refractive index of one of the light emitting components. ### Claim 3 (depends on 1) The display apparatus according to claim 1, wherein a refractive index of one of the scattering particles falls within a range between 1.5 and 2. ### Claim 4 (depends on 1) The display apparatus according to claim 1, wherein a body of the first bank layer has a height in a first direction perpendicular to the driving backplane, the body of the first bank layer has a maximum width in a second direction parallel to the driving backplane, and a ratio of the height to the width is less than or equal to 6. ### Claim 5 (depends on 4) The display apparatus according to claim 4, wherein the light emitting components are arranged at an interval in the second direction, and a width of each of the first openings is less than or equal to the interval. ### Claim 6 (depends on 1) The display apparatus according to claim 1, wherein the light emitting surfaces of the light emitting components respectively include a plurality of rough surfaces, and each of the rough surfaces is provided with a portion of the scattering particles. ### Claim 7 (depends on 6) The display apparatus according to claim 6, wherein each of the light emitting components comprises an electrode, the light emitting surface of each of the light emitting components is formed on the electrode of each of the light emitting components, and the rough surfaces are formed by the electrodes of the light emitting components having structures of an uneven thickness. ### Claim 8 (depends on 1) The display apparatus according to claim 1, further comprising: a lens component, disposed on the first bank layer, wherein the scattering particles, the oblique surfaces of the first bank layer and the lens component surroundingly form the air gaps. ### Claim 9 (depends on 8) The display apparatus according to claim 8, wherein the lens component is a micro-lens array formed by a plurality of micro-lenses or a lens array formed by a plurality of lenses, and each of the light emitting components corresponds to more than one of the micro-lenses or more than one of the lenses in a first direction perpendicular to the driving backplane. ### Claim 10 (depends on 1) The display apparatus according to claim 1, further comprising: a second bank layer, disposed between the first bank layer and the driving backplane, wherein the second bank layer has a plurality of second openings, the second openings of the second bank layer respectively overlap with the first openings of the first bank layer, and the light emitting components and the scattering particles are disposed in the second openings of the second bank layer. ### Claim 11 (depends on 1) The display apparatus according to claim 1, wherein each of the light emitting components comprises an electrode, the light emitting surface of each of the light emitting components is formed on the electrode of each of the light emitting components, and the electrodes of two adjacent ones of the light emitting components extend to be connected to each other below a body of the first bank layer along a first direction perpendicular to the driving backplane. ### Claim 12 (depends on 1) The display apparatus according to claim 1, wherein each of the light emitting components comprises: a first type semiconductor layer; a second type semiconductor layer; an active layer, disposed between the first type semiconductor layer and the second type semiconductor layer; a first electrode, electrically connected to the first type semiconductor layer; and a second electrode electrically connected to the second type semiconductor layer; wherein the first electrode, the first type semiconductor layer, the active layer, the second type semiconductor layer and the second electrode are stacked sequentially in a first direction perpendicular to the driving backplane; and wherein the light emitting surface of each of the light emitting components is formed on the second electrode of each of the light emitting components, and the scattering particles are in contact with the second electrodes of the light emitting components. ### Claim 13 (depends on 12) The display apparatus according to claim 12, wherein each of the light emitting components further comprises: an insulating protection layer, covering a side wall of the first type semiconductor layer, a side wall of the second type semiconductor layer and a side wall of the active layer; wherein the insulating protection layer has a second opening overlapping with the second type semiconductor layer in the first direction, and the second electrode is filled into the second opening of the insulating protection layer to be electrically connected to the second type semiconductor layer. ### Claim 14 (depends on 13) The display apparatus according to claim 13, wherein a portion of the second electrode and a portion of the insulating protection layer extend to be located below a body of the first bank layer along the first direction, and the portion of the second electrode is located between the body of the first bank layer and the portion of the insulating protection layer in the first direction. ### Claim 15 A display apparatus, comprising: a driving backplane; a plurality of light emitting components, disposed on the driving backplane, and electrically connected to the driving backplane; a first bank layer, disposed on the driving backplane, wherein the first bank layer has a plurality of first openings and a plurality of oblique surfaces defining the first openings, the light emitting components respectively overlap with the first openings of the first bank layer, and the oblique surfaces of the first bank layer are oblique relative to the driving backplane; and a plurality of scattering particles, disposed on a plurality of light emitting surfaces of the light emitting components, wherein a plurality of air gaps exist between the scattering particles and the oblique surfaces of the first bank layer; wherein the light emitting surfaces of the light emitting components respectively include a plurality of rough surfaces, and each of the rough surfaces is provided with a portion of the scattering particles. ### Claim 16 (depends on 15) The display apparatus according to claim 15, wherein a refractive index of one of the scattering particles is between a refractive index of one of the air gaps and a refractive index of one of the light emitting components. ### Claim 17 (depends on 15) The display apparatus according to claim 15, wherein a refractive index of one of the scattering particles falls within a range between 1.5 and 2. ### Claim 18 (depends on 15) The display apparatus according to claim 15, wherein a body of the first bank layer has a height in a first direction perpendicular to the driving backplane, the body of the first bank layer has a maximum width in a second direction parallel to the driving backplane, and a ratio of the height to the width is less than or equal to 6. ### Claim 19 (depends on 18) The display apparatus according to claim 18, wherein the light emitting components are arranged at an interval in the second direction, and a width of each of the first openings is less than or equal to the interval. ### Claim 20 (depends on 15) The display apparatus according to claim 15, further comprising: a second bank layer, disposed between the first bank layer and the driving backplane, wherein the second bank layer has a plurality of second openings, the second openings of the second bank layer respectively overlap with the first openings of the first bank layer, and the light emitting components and the scattering particles are disposed in the second openings of the second bank layer.