# US 12,004,402 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 12,004,402 B2 - Document ID: US12004402B2 - Status: Granted - Kind: B2 - Application number: 17/474,228 - Filed: 2021-09-14 - Published: 2021-12-30 - Granted: 2024-06-04 - Earliest claimed: 2019-03-22 - Assignees: Japan Display Inc. - Applicants: Japan Display Inc. - Inventors: Hiroshi Tabatake; Tetsuo Morita; Yasuhiro Ogawa - Web page: https://patentgrep.com/patent/US12004402B2 ## CPC - G09G 3/3233: with pixel circuitry controlling the current through the light-emitting element - G09F 9/30: in which the desired character or characters are formed by combining individual elements (panels comprising a number of electrodes in a single cell controlling light arriving from an independent light source, e.g. electro-optical or magneto-optical cell, G02F1/00) - G09F 9/302: characterised by the form or geometrical disposition of the individual elements - G09G 3/3208: organic, e.g. using organic light-emitting diodes [OLED] - H05B 33/12: Light sources with substantially two-dimensional [2D] radiating surfaces - H10K 59/1216: {the pixel elements being capacitors} - H10K 59/353: {characterised by the geometrical arrangement of the RGB subpixels} - G09G 2300/0426: Layout of electrodes and connections - 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 2310/0251: Precharge or discharge of pixel before applying new pixel voltage - G09G 2310/0262: The addressing of the pixel, in a display other than an active matrix LCD, involving the control of two or more scan electrodes or two or more data electrodes, e.g. pixel voltage dependent on signals of two data electrodes - G09G 2310/08: Details of timing specific for flat panels, other than clock recovery - 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) - G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract A drive circuit includes a holding capacitor, an element capacitor, and an additional capacitor interposed between one of the source and the drain, and one of the high-potential line and the low-potential line. The drive circuit configured to drive the first light emitter includes a first element capacitor as the element capacitor and a first additional capacitor as the additional capacitor. The driving circuit configured to drive the second light emitter includes a second element capacitor as the element capacitor and a second additional capacitor as the additional capacitor. The first element capacitor is larger in capacitance than the second element capacitor. The first additional capacitor is smaller in capacitance than the second additional capacitor. ## Claims ### Claim 1 A display device comprising: light emitters at respective sub-pixels in respective emission colors, the sub-pixels constituting each of a plurality of pixels; and a drive circuit being configured to drive each of the light emitters, wherein the light emitters include a first light emitter corresponding to one of the emission colors and a second light emitter corresponding to another of the emission colors, the first light emitter is larger in a light-emitting region than the second light emitter, the drive circuit includes: a high-potential line and a low-potential line, configured to draw a current to a corresponding one of the light emitters; a current switch configured to switch between flow and shutoff of the current; a thin film transistor connected in series with the current switch to control amount of the current; a signal switch configured to switch between input and shutoff of a video signal to a gate of the thin film transistor; a holding capacitor interposed between the gate and one of a source and a drain of the thin film transistor; an element capacitor composed of a corresponding one of the light emitters; and an additional capacitor interposed between the one of the source and the drain, and one of the high-potential line and the low-potential line, the drive circuit configured to drive the first light emitter includes a first element capacitor as the element capacitor and a first additional capacitor as the additional capacitor, the driving circuit configured to drive the second light emitter includes a second element capacitor as the element capacitor and a second additional capacitor as the additional capacitor, the first element capacitor is larger in capacitance than the second element capacitor, and the first additional capacitor is smaller in capacitance than the second additional capacitor. ### Claim 2 (depends on 1) The display device according to claim 1, wherein the first element capacitor and the first additional capacitor are equal in total capacitance to the second element capacitor and the second additional capacitor. ### Claim 3 (depends on 1) The display device according to claim 1, wherein the light emitters include respective pixel electrodes, each of the pixel electrodes serves as one electrode of each of the element capacitor and the additional capacitor, and the additional capacitor includes a counter electrode opposed to the one electrode. ### Claim 4 (depends on 3) The display device according to claim 3, wherein an area of the one electrode included in the first additional capacitor is larger than that of the one electrode included in the second additional capacitor in a planar view. ### Claim 5 (depends on 3) The display device according to claim 3, wherein an area of the counter electrode included in the first additional capacitor is smaller than that of the counter electrode included in the second additional capacitor in a planar view.