# US 12,218,175 B2 · Display device having banks with at least two areas having different widths > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,218,175 B2 - Document ID: US12218175B2 - Status: Granted - Kind: B2 - Application number: 17/282,255 - Filed: 2019-04-01 - Published: 2021-11-04 - Granted: 2025-02-04 - Earliest claimed: 2018-10-02 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Jin Woo Choi; Eun A Yang; Hyun Min Cho - Web page: https://patentgrep.com/patent/US12218175B2 ## CPC - H10H 29/142: {Two-dimensional arrangements, e.g. asymmetric LED layout} - H10W 90/00: Package configurations - G09G 3/2003: {Display of colours (specific for liquid crystal displays G09G3/3607)} - H10D 86/00: Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates - H10H 20/831: characterised by their shape - G09G 2300/0426: Layout of electrodes and connections - G09G 2300/0452: Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components - H10H 20/819: characterised by their shape, e.g. curved or truncated substrates - H10H 20/84: Coatings, e.g. passivation layers or antireflective coatings - 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 - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) - H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES ## Abstract A display deice includes a pair of first color sub-pixels arranged in a display area in a first direction, each of the pair of first color sub-pixels including at least one first color light emitting element, and a bank enclosing the pair of first color sub-pixels. The bank includes at least two areas having different widths in an area corresponding to each of the pair of first color sub-pixels. ## Claims ### Claim 1 A display device, comprising: a pair of first color sub-pixels arranged in a display area in a first direction, each first color sub-pixel of the pair of first color sub-pixels including at least two first color light emitting elements; and a bank enclosing the pair of first color sub-pixels, wherein the bank comprises at least two areas having different widths in an area corresponding to each of the pair of first color sub-pixels, and the bank is not disposed between each first color sub-pixel of the pair of first color sub-pixels. ### Claim 2 (depends on 1) The display device according to claim 1, wherein the pair of first color sub-pixels comprise at least two areas having different widths in each emission area enclosed by the bank, the at least two areas of the pair of first color sub-pixels contacting each other in a portion of the emission area having a maximum width. ### Claim 3 (depends on 1) The display device according to claim 1, wherein the first direction is a vertical direction of the display area, and the bank has a top and bottom symmetrical shape. ### Claim 4 (depends on 1) The display device according to claim 1, wherein the pair of first color sub-pixels comprise emission areas having a triangular shape and an inverted triangular shape, respectively, and the bank has a quadrilateral shape enclosing only the emission areas of the pair of first color sub-pixels. ### Claim 5 (depends on 4) The display device according to claim 4, wherein the pair of first color sub-pixels are symmetrically arranged in the first direction, each of the pair of first color sub-pixels has an emission area of an isosceles triangular shape, and the bank has a diamond shape and encloses the emission areas of the pair of first color sub-pixels. ### Claim 6 (depends on 1) The display device according to claim 1, wherein each of the pair of first color sub-pixels comprises a polygonal emission area having a symmetrical structure in a second direction intersecting the first direction, and the bank has a polygonal shape having a symmetrical structure in the first direction and the second direction. ### Claim 7 (depends on 1) The display device according to claim 1, wherein each of the pair of first color sub-pixels comprises a step-shaped emission area. ### Claim 8 (depends on 1) The display device according to claim 1, further comprising: a second color sub-pixel disposed adjacent to at least one of the pair of first color sub-pixels in a second direction intersecting with the first direction, and including at least two second color light emitting elements; and a third color sub-pixel disposed adjacent to the second color sub-pixel in the second direction, and including at least two third color light emitting elements. ### Claim 9 (depends on 8) The display device according to claim 8, wherein the second color sub-pixel comprises an emission area having a shape in which an emission area of the at least one of the pair of first color sub-pixels is inverted in the first direction, and the third color sub-pixel comprises an emission area having the same shape as the emission area of the at least one of the pair of first color sub-pixels. ### Claim 10 (depends on 8) The display device according to claim 8, wherein the second color sub-pixel is disposed between the at least one of the pair of first color sub-pixels and the third color sub-pixel, an emission area of the at least one of the pair of first color sub-pixels and an emission area of the third color sub-pixel have a triangular shape, and an emission area of the second color sub-pixel has an inverted triangular shape. ### Claim 11 (depends on 10) The display device according to claim 10, comprising a trapezoidal pixel including the at least one of the pair of first color sub-pixels, the second color sub-pixel, and the third color sub-pixel. ### Claim 12 (depends on 8) The display device according to claim 8, wherein the second color sub-pixel comprises an emission area having a shape in which an emission area of the at least one of the pair of first color sub-pixels is inverted in the second direction, and the third color sub-pixel comprises an emission area having a shape in which the emission area of the second color sub-pixel is inverted in the first direction and the second direction. ### Claim 13 (depends on 1) The display device according to claim 1, wherein each of the pair of first color sub-pixels further comprises: a first electrode disposed in each emission area, and electrically connected only to a first end of each of the at least two first color light emitting elements; and a second electrode disposed in each emission area to be spaced apart from the first electrode, and electrically connected only to a second end of each of the at least two first color light emitting elements, wherein the second end is opposite from the first end for each of the at least two first color light emitting elements. ### Claim 14 (depends on 13) The display device according to claim 13, wherein the first electrodes disposed in the pair of first color sub-pixels have a same shape, and the second electrodes disposed in the pair of first color sub-pixels have a same shape. ### Claim 15 (depends on 13) The display device according to claim 13, wherein the first electrodes disposed in the pair of first color sub-pixels are symmetrical with each other, and the second electrodes disposed in the pair of first color sub-pixels are symmetrical with each other. ### Claim 16 (depends on 13) The display device according to claim 13, wherein the first electrodes of the pair of first color sub-pixels are separated from each other, and the second electrodes of the pair of first color sub-pixels are electrically connected to each other. ### Claim 17 (depends on 13) The display device according to claim 13, wherein each of the pair of first color sub-pixels further comprises: a first partition wall disposed between a substrate and the first electrode; a second partition wall disposed between the substrate and the second electrode; a first contact electrode disposed on the first end of each of the at least two first color light emitting elements and a portion of the first electrode, the first contact electrode electrically connecting the first end of each of the at least two first color light emitting elements to the first electrode; and a second contact electrode disposed on the second end of each of the at least two first color light emitting elements and a portion of the second electrode, the second contact electrode electrically connecting the second end of each of the at least two first color light emitting elements to the second electrode. ### Claim 18 (depends on 1) The display device of claim 1, wherein a boundary between ones of the pair of first color sub-pixels is absent of any light emitting elements. ### Claim 19 (depends on 1) The display device of claim 1, wherein in each of the at least two first color light emitting elements, any one of the pair of first color sub-pixels are electrically connected in parallel and are spaced apart from each other. ### Claim 20 (depends on 1) The display device of claim 1, wherein ones of the pair of first color sub-pixels are independently addressed and independently controlled. ### Claim 21 A display device, comprising: a pair of emission areas arranged in a display area and contacting each other, the pair of emission areas each including: a first electrode; a second electrode; and at least two first color light emitting elements disposed between the first electrode and the second electrode; and a bank enclosing the pair of emission areas, wherein the bank comprises at least two areas having different widths in an area corresponding to each of the pair of emission areas, and has a maximum width in an area where the emission areas contact each other, each light emitting element of the at least two first color light emitting elements is electrically connected in parallel and is spaced apart from each other, and each emission area of the pair of emission areas is independently addressed and independently controlled. ### Claim 22 (depends on 21) The display device according to claim 21, wherein the pair of emission areas vertically contact with each other in the display area, and the bank has a top and bottom symmetrical shape. ### Claim 23 (depends on 21) The display device according to claim 21, wherein the first electrodes of the pair of emission areas are separated from each other.