# US 10,872,560 B2 · Display device and electronic equipment

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- Number: US 10,872,560 B2
- Document ID: US10872560B2
- Status: Granted
- Kind: B2
- Application number: 15/957,160
- Filed: 2018-04-19
- Published: 2018-09-13
- Granted: 2020-12-22
- Earliest claimed: 2007-08-15
- Assignees: Sony Corporation
- Applicants: Sony Corporation
- Inventors: Yukihito Iida; Tetsuo Minami; Takao Tanikame; Katsuhide Uchino
- Web page: https://patentgrep.com/patent/US10872560B2

## CPC

- G09G 3/3225: using an active matrix
- G09G 3/3233: with pixel circuitry controlling the current through the light-emitting element
- G09G 3/3258: with pixel circuitry controlling the voltage across the light-emitting element
- G09G 3/3266: Details of drivers for scan electrodes
- 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 2300/0866: by means of changes in the pixel supply voltage
- G09G 2320/0233: Improving the luminance or brightness uniformity across the screen
- G09G 2320/0252: Improving the response speed
- G09G 2320/0257: Reduction of after-image effects
- G09G 2320/045: Compensation of drifts in the characteristics of light emitting or modulating elements
- 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 including: a pixel array section; power supply lines; and auxiliary electrodes, wherein each pixel has an auxiliary capacitance, and one of electrodes of the auxiliary capacitance is connected to the source electrode of the drive transistor, and another electrode is connected to the auxiliary electrode for the pixel.

## Claims

### Claim 1

A display device comprising:
a pixel array section, the pixel array section includes a plurality of pixels arranged in a matrix,
at least one of the pixels including (a) a light emitting element, (b) a write transistor configured to provide a video signal, (c) a drive transistor configured to drive the light emitting element based on the video signal, and (d) a capacitor connected between the drive transistor and a potential supply line,
wherein the capacitor includes a first electrode, a second electrode and a third electrode which are overlapping each other in a capacitor region,
wherein the first electrode is electrically connected to the potential supply line via a first contact hole in a first insulating layer,
wherein the third electrode is electrically connected to the first electrode via a second contact hole in a second insulating layer below the first insulating layer, and the third electrode is opposite the power supply line with the first and second electrodes sandwiched between the power supply line and the third electrode,
wherein the second electrode is sandwiched between the first electrode and the third electrode, and the first electrode is sandwiched between the second electrode and the potential supply line,
wherein the potential supply line is disposed on an upper layer of the first insulating layer which covers the first electrode, and
wherein the first contact hole and the second contact hole contact opposite sides of the first electrode.

### Claim 2 (depends on 1)

The display device according claim 1, wherein said at least one of the pixels includes a fourth electrode disposed on the first insulating layer and electrically connected to the second electrode via a third contact hole in the first insulating layer.

### Claim 3 (depends on 2)

The display device according claim 2, wherein the fourth electrode is an anode electrode of the light emitting element.

### Claim 4 (depends on 1)

The display device according claim 1, wherein the first electrode is made of a same material as a gate electrode of the drive transistor.