# US 12,183,771 B2 · Display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,183,771 B2 - Document ID: US12183771B2 - Status: Granted - Kind: B2 - Application number: 17/520,227 - Filed: 2021-11-05 - Published: 2022-06-02 - Granted: 2024-12-31 - Earliest claimed: 2020-11-30 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Seung Geun Lee; Byung Ju Lee; Hoo Keun Park; Chul Jong Yoo; Dong Eon Lee - Web page: https://patentgrep.com/patent/US12183771B2 ## 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)} - G09G 3/32: semiconductive, e.g. using light-emitting diodes [LED] - H10H 20/8312: {extending at least partially through the bodies} - H10H 20/857: Interconnections, e.g. lead-frames, bond wires or solder balls - G09G 2300/0426: Layout of electrodes and connections - G09G 2300/0842: forming a memory circuit, e.g. a dynamic memory with one capacitor - G09G 2320/0233: Improving the luminance or brightness uniformity across the screen - G09G 2330/021: Power management, e.g. power saving - H10H 20/821: of the light-emitting regions, e.g. non-planar junctions - H10H 20/824: comprising only Group III-V materials, e.g. GaP - H10H 20/825: containing nitrogen, e.g. GaN - 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) ## Abstract A display device includes a first subpixel and a second subpixel, wherein the first subpixel includes a first light source unit including a plurality of first light-emitting elements configured to emit first light having a center wavelength of a first wavelength, the second subpixel includes a second light source unit including a plurality of second light-emitting elements configured to emit second light having a center wavelength of a second wavelength, the first light source unit includes first to nth light-emitting groups that are connected in series, each of the groups including the plurality of first light-emitting elements, the second light source unit includes first to mth light-emitting groups that are connected in series and each of the groups includes the plurality of second light-emitting elements, where n and m are natural numbers, and the second wavelength is different from the first wavelength. ## Claims ### Claim 1 A display device comprising: a first subpixel; and a second subpixel, wherein the first subpixel comprises a first light source unit comprising a plurality of first light-emitting elements configured to emit first light having a center wavelength of a first wavelength, wherein the second subpixel comprises a second light source unit comprising a plurality of second light-emitting elements configured to emit second light having a center wavelength of a second wavelength, wherein the first light source unit comprises first to nth light-emitting groups that are connected in series, each of the first to nth light-emitting groups comprising the plurality of first light-emitting elements, where n is a natural number, wherein the second light source unit comprises first to mth light-emitting groups that are connected in series, each of the first to mth light-emitting groups comprising the plurality of second light-emitting elements, where m is a natural number, wherein the second wavelength is different from the first wavelength, and n is different from m. ### Claim 2 (depends on 1) The display device of claim 1, wherein the second wavelength is longer than the first wavelength, and m is greater than n. ### Claim 3 (depends on 2) The display device of claim 2, wherein the first wavelength ranges from about 450 nm to about 495 nm or ranges from about 520 nm to about 575 nm, and the second wavelength ranges from about 600 nm to about 750 nm. ### Claim 4 (depends on 3) The display device of claim 3, wherein n is two, and m is three. ### Claim 5 (depends on 3) The display device according to claim 3, wherein n is three, and m is four. ### Claim 6 (depends on 2) The display device of claim 2, further comprising a third subpixel, wherein the third subpixel comprises a third light source unit comprising a plurality of third light-emitting elements configured to emit third light having a center wavelength of a third wavelength, wherein the third light source unit comprises first to sth light-emitting groups that are connected in series, each of the first to sth light-emitting groups comprising the plurality of third light-emitting elements, where s is a natural number, wherein the third wavelength is different from the second wavelength, and s is different from the m. ### Claim 7 (depends on 6) The display device of claim 6, wherein the second wavelength is longer than the third wavelength, and m is greater than s. ### Claim 8 (depends on 7) The display device of claim 7, wherein the first wavelength ranges from about 450 nm to about 495 nm, the second wavelength ranges from about 600 nm to about 750 nm, and the third wavelength ranges from about 520 nm to about 575 nm. ### Claim 9 (depends on 8) The display device of claim 8, wherein n and s are the same. ### Claim 10 (depends on 1) The display device of claim 1, wherein the plurality of first light-emitting elements in each of the first to nth light-emitting groups of the first light source unit are connected in parallel to each other. ### Claim 11 (depends on 10) The display device of claim 10, wherein the plurality of second light-emitting elements in each of the first to mth light-emitting groups of the second light source unit are connected in parallel to each other. ### Claim 12 (depends on 1) The display device of claim 1, wherein each of the first and second light-emitting elements is an inorganic light-emitting diode. ### Claim 13 (depends on 1) The display device of claim 1, wherein the first light source unit further comprises a first electrode electrically connected to a first transistor of the first subpixel and a second electrode electrically connected to a first voltage line, and wherein the first to nth light-emitting groups of the first light source unit comprise the first light-emitting group and a second light-emitting group connected in series between the first electrode of the first light source unit and the second electrode of the first light source unit. ### Claim 14 (depends on 13) The display device of claim 13, wherein one end of the first light-emitting group of the first light source unit is connected to the first electrode of the first light source unit, wherein an other end of the first light-emitting group of the first light source unit is connected to one end of the second light-emitting group of the first light source unit, and wherein an other end of the second light-emitting group of the first light source unit is connected to the second electrode of the first light source unit. ### Claim 15 (depends on 13) The display device of claim 13, wherein the second light source unit further comprises a first electrode electrically connected to a first transistor of the second subpixel and a second electrode electrically connected to the first voltage line, and wherein the first to mth light-emitting groups of the second light source unit comprise the first light-emitting group, the second light-emitting group, and a third light-emitting group connected in series between the first electrode of the second light source unit and the second electrode of the second light source unit. ### Claim 16 (depends on 15) The display device of claim 15, wherein one end of the first light-emitting group of the second light source unit is connected to the first electrode of the second light source unit, wherein an other end of the first light-emitting group of the second light source unit is connected to one end of the second light-emitting group of the second light source unit, wherein an other end of the second light-emitting group of the second light source unit is connected to one end of the third light-emitting group of the second light source unit, and wherein an other end of the third light-emitting group of the second light source unit is connected to the second electrode of the second light source unit.