# US 12,603,050 B2 · Micro display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,603,050 B2 - Document ID: US12603050B2 - Status: Granted - Kind: B2 - Application number: 18/949,711 - Filed: 2024-11-15 - Published: 2025-08-21 - Granted: 2026-04-14 - Earliest claimed: 2024-02-15 - Assignees: LG Display Co., Ltd. - Applicants: LG Display Co., Ltd. - Inventors: Sangkyu Kim; JaeKyeong Yun - Web page: https://patentgrep.com/patent/US12603050B2 ## CPC - G09G 3/3233: with pixel circuitry controlling the current through the light-emitting element - G09G 3/2003: {Display of colours (specific for liquid crystal displays G09G3/3607)} - G09G 3/3291: in which the data driver supplies a variable data voltage for setting the current through, or the voltage across, the light-emitting elements - G09G 2300/0408: Integration of the drivers onto the display substrate - G09G 2300/0452: Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components - G09G 2300/0819: used for counteracting undesired variations, e.g. feedback or autozeroing - G09G 2300/0842: forming a memory circuit, e.g. a dynamic memory with one capacitor - G09G 2320/0242: Compensation of deficiencies in the appearance of colours - 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 micro display device can include a pixel unit disposed on a display panel, the pixel unit including a red subpixel, a green subpixel and a blue subpixel, a first power source voltage line including a first line connected between a first power source voltage supply terminal and the red subpixel, a second line connected between the first power source voltage supply terminal and the green subpixel, and a third line connected between the first power source voltage supply terminal and the blue subpixel, and a first resistance unit connected to at least a portion of the first power source voltage line. ## Claims ### Claim 1 A micro display device, comprising: a pixel unit disposed on a display panel, the pixel unit including a red subpixel, a green subpixel and a blue subpixel; a first power source voltage line including a first line connected between a first power source voltage supply terminal and the red subpixel, a second line connected between the first power source voltage supply terminal and the green subpixel, and a third line connected between the first power source voltage supply terminal and the blue subpixel; and a first resistance unit connected to at least a portion of the first power source voltage line, wherein a first end of the first resistance unit is connected in common to the red, green blue subpixels of the pixel unit, and a second end of the first resistance unit is connected to the first power source voltage supply terminal. ### Claim 2 (depends on 1) The micro display device of claim 1, wherein the first resistance unit includes a fixed resistance element. ### Claim 3 (depends on 1) The micro display device of claim 1, wherein the first resistance unit includes a variable resistance element. ### Claim 4 (depends on 3) The micro display device of claim 3, wherein a resistance value of the variable resistance element is configured to vary based on a body effect in which a threshold voltage is varied according to a voltage applied to a transistor provided in the display panel. ### Claim 5 (depends on 1) The micro display device of claim 1, wherein the first resistance unit is disposed in a display area of the display panel. ### Claim 6 (depends on 1) The micro display device of claim 1, wherein the first resistance unit is disposed in a non-display area of the display panel. ### Claim 7 (depends on 1) The micro display device of claim 1, wherein the first resistance unit is disposed outside of the display panel. ### Claim 8 (depends on 1) The micro display device of claim 1, wherein the first resistance unit is a thin film transistor. ### Claim 9 (depends on 8) The micro display device of claim 8, wherein the thin film transistor is configured to be used as a resistor in a linear mode section of the thin film transistor. ### Claim 10 (depends on 8) The micro display device of claim 8, wherein a source node of the thin film transistor is connected to a cathode electrode of the green subpixel, a drain node of the thin film transistor is connected to the first power source voltage supply terminal, and a gate node of the thin film transistor is connected to an anode electrode of the red subpixel, an anode electrode of the green subpixel and an anode electrode of the blue subpixel. ### Claim 11 (depends on 1) The micro display device of claim 1, wherein the red subpixel, the green subpixel, and the blue subpixel are arranged in a horizontal direction on the display panel. ### Claim 12 (depends on 1) The micro display device of claim 1, wherein the red subpixel, the green subpixel, and the blue subpixel are configured to emit white light through simultaneous light emission. ### Claim 13 A display device comprising: a pixel disposed on a substrate, the pixel including a first color subpixel configured to emit light of a first color, a second color subpixel configured to emit light of a second color and a third color subpixel configured to emit light of a third color; a data driver disposed on the substrate, the data driver being connected to a plurality of data lines; a gate driver disposed on the substrate, the gate driver being connected to a plurality of gate lines; a demultiplexer connected between one data line among the plurality of data lines and the first, second and third color subpixels within the pixel; and a first resistance unit connected between the pixel and a first power source voltage line, wherein a first end of the first resistance unit is connected in common to the first, second and third color subpixels of the pixel, and a second end of the first resistance unit is connected to the first power source voltage line. ### Claim 14 (depends on 13) The display device of claim 13, wherein the first resistance unit is configured to reduce a luminance of the pixel when the first, second and third color subpixels emit white light. ### Claim 15 (depends on 13) The display device of claim 13, wherein the first resistance unit has a fixed resistance. ### Claim 16 (depends on 13) The display device of claim 13, wherein the first resistance unit has a variable resistance. ### Claim 17 (depends on 13) The display device of claim 13, wherein the first resistance unit is disposed external to the substrate. ### Claim 18 (depends on 13) The display device of claim 13, wherein the first resistance unit is disposed on the substrate that includes the pixel, the data driver and the gate driver. ### Claim 19 (depends on 13) The display device of claim 13, wherein the first resistance unit is a thin film transistor, wherein the first color subpixel includes a first light emitting element having a first electrode and a second electrode, the second color subpixel includes a second light emitting element having a first electrode and a second electrode, and the third color subpixel includes a third light emitting element having a first electrode and a second electrode, wherein a gate electrode of the film transistor is connected in common to the first electrode of the first light emitting element in the first color subpixel, the first electrode of the second light emitting element in the second color subpixel and the first electrode of the third light emitting element in the third color subpixel, wherein a first electrode of the thin film transistor is connected in common to the second electrode of the first light emitting element in the first color subpixel, the second electrode of the second light emitting element in the second color subpixel and the second electrode of the third light emitting element in the third color subpixel, and wherein a second electrode of the thin film transistor is connected to the first power source voltage line. ### Claim 20 A display device comprising: a pixel disposed on a substrate, the pixel including a first color subpixel configured to emit light of a first color, a second color subpixel configured to emit light of a second color and a third color subpixel configured to emit light of a third color; a demultiplexer connected between one data line among a plurality of data lines and the first, second and third color subpixels within the pixel; and a first resistance unit connected between the pixel and a first power source voltage line, wherein the first resistance unit is a thin film transistor, wherein the first color subpixel includes a first light emitting element having a first electrode and a second electrode, the second color subpixel includes a second light emitting element having a first electrode and a second electrode, and the third color subpixel includes a third light emitting element having a first electrode and a second electrode, wherein a gate electrode of the film transistor is connected in common to the first electrode of the first light emitting element in the first color subpixel, the first electrode of the second light emitting element in the second color subpixel and the first electrode of the third light emitting element in the third color subpixel, wherein a first electrode of the thin film transistor is connected in common to the second electrode of the first light emitting element in the first color subpixel, the second electrode of the second light emitting element in the second color subpixel and the second electrode of the third light emitting element in the third color subpixel, and wherein a second electrode of the thin film transistor is connected to the first power source voltage line.