# US 2026/0087976 A1 · Pixel circuit > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2026/0087976 A1 - Document ID: US20260087976A1 - Status: Published application - Kind: A1 - Application number: 19/405,410 - Filed: 2025-12-02 - Published: 2026-03-26 - Earliest claimed: 2023-12-29 - Assignees: AUO Corporation - Applicants: AUO Corporation - Inventors: Ting-Wei Guo; Shu-Hao Huang; Ching-Liang Huang; Sung-Yu Su; Yang-En Wu - Web page: https://patentgrep.com/patent/US20260087976A1 ## CPC - G09G 3/32: semiconductive, e.g. using light-emitting diodes [LED] - G09G 3/2003: {Display of colours (specific for liquid crystal displays G09G3/3607)} - G09G 3/3225: using an active matrix - G09G 3/3233: with pixel circuitry controlling the current through the light-emitting element - G09G 2300/0852: being a dynamic memory with more than one capacitor - G09G 2300/0861: with additional control of the display period without amending the charge stored in a pixel memory, e.g. by means of additional select electrodes - G09G 2320/0233: Improving the luminance or brightness uniformity across the screen - 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 pixel circuit is disclosed. The pixel circuit includes a current generating circuit, one or more light-emitting elements, and a light-emitting control circuit. The current generating circuit receives pixel data to provide a driving current. The light-emitting element is used to provide full-color light. The light-emitting control circuit is coupled in series with the current generating circuit and the light-emitting element, and controls light-emitting brightness of the full-color light based on the driving current. ## Claims ### Claim 1 A pixel circuit, comprising: a current generating circuit, receiving pixel data to provide a driving current; one or more light-emitting elements for providing full-color light; a light-emitting control circuit, coupled in series with the current generating circuit and the one or more light-emitting elements, and controlling light-emitting brightness of the full-color light based on the driving current, wherein the current generating circuit comprises: a first transistor, having a first terminal, a control terminal receiving the pixel data, and a second terminal coupled to the light-emitting control circuit; wherein a first terminal of a first light-emitting element of the one or more light-emitting elements receives a first system high voltage, a first terminal of a second light-emitting element of the one or more light-emitting elements receives a second system high voltage different from the first system high voltage, a first terminal of a third light-emitting element of the one or more light-emitting elements receives a third system high voltage different from the first system high voltage and the second system high voltage, and second terminals of the first to third light-emitting elements are commonly coupled to the first terminal of the first transistor to provide the driving current flowing through the first transistor. ### Claim 2 (depends on 1) The pixel circuit according to claim 1, wherein the current generating circuit further comprises: a second transistor, having a first terminal receiving the pixel data, a control terminal receiving a scanning signal, and a second terminal coupled to the control terminal of the first transistor; a first storage capacitor, coupled between the first system high voltage and the control terminal of the first transistor a second storage capacitor, coupled between the second system high voltage and the control terminal of the first transistor; and a third storage capacitor, coupled between the third system high voltage and the control terminal of the first transistor. ### Claim 3 (depends on 1) The pixel circuit according to claim 1, wherein the light-emitting control circuit comprises: a third transistor, having a first terminal coupled to the second terminal of the first transistor, a control terminal receiving a first light-emitting signal, and a second terminal receiving a first system low voltage. ### Claim 4 (depends on 3) The pixel circuit according to claim 3, wherein the light-emitting control circuit further comprises: a fourth transistor, having a first terminal coupled to the second terminal of the first transistor, a control terminal receiving a second light-emitting signal, and a second terminal receiving a second system low voltage; and a fifth transistor, having a first terminal coupled to the second terminal of the first transistor, a control terminal receiving a third light-emitting signal, and a second terminal receiving a third system low voltage. ### Claim 5 (depends on 3) The pixel circuit according to claim 3, wherein the light-emitting control circuit further comprises: a first capacitor, coupled between the control terminal of the third transistor and the first light-emitting signal; and a sixth transistor, having a first terminal coupled to the first terminal of the third transistor, a control terminal receiving the scanning signal, and a second terminal coupled to the control terminal of the third transistor. ### Claim 6 (depends on 3) The pixel circuit according to claim 3, wherein the light-emitting control circuit further comprises: a second capacitor, coupled between the control terminal of the third transistor and the first light-emitting signal; and a seventh transistor, having a first terminal receiving the first system high voltage, a control terminal receiving the scanning signal, and a second terminal coupled to the control terminal of the third transistor. ### Claim 7 (depends on 4) The pixel circuit according to claim 4, wherein the first light-emitting signal, the second light-emitting signal, and the third light-emitting signal are individually multi-pulse signals. ### Claim 8 (depends on 1) The pixel circuit according to claim 1, wherein the one or more light-emitting elements comprise a red light-emitting diode, a green light-emitting diode, and a blue light-emitting diode. ### Claim 9 (depends on 1) The pixel circuit according to claim 1, wherein the one or more light-emitting elements comprise a dynamic pixel tuning light-emitting diode. ### Claim 10 A pixel circuit, comprising: a current generating circuit, receiving pixel data to provide a driving current; one or more light-emitting elements for providing full-color light; a light-emitting control circuit, coupled in series with the current generating circuit and the one or more light-emitting elements, and controlling light-emitting brightness of the full-color light based on the driving current, wherein the current generating circuit comprises: a first transistor, having a first terminal receiving the pixel data, a control terminal receiving a scanning signal, and a second terminal; a second transistor, having a first terminal, a control terminal coupled to the second terminal of the first transistor, and a second terminal coupled to the light-emitting control circuit; wherein a first terminal of a first light-emitting element of the one or more light-emitting elements receives a first system high voltage, a first terminal of a second light-emitting element of the one or more light-emitting elements receives a second system high voltage different from the first system high voltage, a first terminal of a third light-emitting element of the one or more light-emitting elements receives a third system high voltage different from the first system high voltage and the second system high voltage, and second terminals of the first to third light-emitting elements are commonly coupled to the first terminal of the second transistor to provide the driving current flowing through the second transistor. ### Claim 11 (depends on 10) The pixel circuit according to claim 10, wherein the current generating circuit further comprises: a first storage capacitor, coupled between the first system high voltage and the control terminal of the first transistor a second storage capacitor, coupled between the second system high voltage and the control terminal of the first transistor; and a third storage capacitor, coupled between the third system high voltage and the control terminal of the first transistor. ### Claim 12 (depends on 10) The pixel circuit according to claim 10, wherein the light-emitting control circuit comprises: a third transistor, having a first terminal coupled to the second terminal of the first transistor, a control terminal receiving a first light-emitting signal, and a second terminal receiving a first system low voltage. ### Claim 13 (depends on 12) The pixel circuit according to claim 12, wherein the light-emitting control circuit further comprises: a fourth transistor, having a first terminal coupled to the second terminal of the first transistor, a control terminal receiving a second light-emitting signal, and a second terminal receiving a second system low voltage; and a fifth transistor, having a first terminal coupled to the second terminal of the first transistor, a control terminal receiving a third light-emitting signal, and a second terminal receiving a third system low voltage. ### Claim 14 (depends on 12) The pixel circuit according to claim 12, wherein the light-emitting control circuit further comprises: a first capacitor, coupled between the control terminal of the third transistor and the first light-emitting signal; and a sixth transistor, having a first terminal coupled to the first terminal of the third transistor, a control terminal receiving the scanning signal, and a second terminal coupled to the control terminal of the third transistor. ### Claim 15 (depends on 12) The pixel circuit according to claim 12, wherein the light-emitting control circuit further comprises: a second capacitor, coupled between the control terminal of the third transistor and the first light-emitting signal; and a seventh transistor, having a first terminal receiving the first system high voltage, a control terminal receiving the scanning signal, and a second terminal coupled to the control terminal of the third transistor. ### Claim 16 (depends on 13) The pixel circuit according to claim 13, wherein the first light-emitting signal, the second light-emitting signal, and the third light-emitting signal are individually multi-pulse signals. ### Claim 17 (depends on 10) The pixel circuit according to claim 10, wherein the one or more light-emitting elements comprise a red light-emitting diode, a green light-emitting diode, and a blue light-emitting diode. ### Claim 18 (depends on 10) The pixel circuit according to claim 10, wherein the one or more light-emitting elements comprise a dynamic pixel tuning light-emitting diode.