# US 10,373,577 B2 · Display device and electronic apparatus

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- Number: US 10,373,577 B2
- Document ID: US10373577B2
- Status: Granted
- Kind: B2
- Application number: 15/463,403
- Filed: 2017-03-20
- Published: 2017-07-06
- Granted: 2019-08-06
- Earliest claimed: 2013-02-26
- Assignees: Japan Display Inc.
- Applicants: Japan Display Inc.
- Inventors: Tadayoshi Katsuta; Hiroshi Mizuhashi
- Web page: https://patentgrep.com/patent/US10373577B2

## CPC

- G06F 3/044: by capacitive means
- G09G 3/3614: {Control of polarity reversal in general}
- G09G 3/3648: {using an active matrix (G09G3/367 - G09G3/3696 take precedence)}
- G09G 3/3677: {suitable for active matrices only}
- G09G 3/3688: {suitable for active matrices only}
- G06F 3/0412: {Digitisers structurally integrated in a display}
- G06F 3/0446: {using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes}
- G09G 2230/00: Details of flat display driving waveforms
- G09G 2300/0408: Integration of the drivers onto the display substrate
- G09G 2300/0426: Layout of electrodes and connections
- G09G 2300/0452: Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
- G09G 2310/08: Details of timing specific for flat panels, other than clock recovery
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- 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

According to an aspect, a display device includes: a plurality of pixels aligned in row and column directions, each of the pixels including a drive element; a plurality of scan lines each coupled with the drive elements included in the pixels aligned in the row direction to transmit thereto a scan signal for selecting the pixels row by row; a plurality of signal lines each coupled with the drive elements included in the pixels aligned in the column direction to write display data; and a display control unit. The display control unit alternately repeats a display period and a stop period. In a latter term of the stop period, display control unit provides the display data written in the respective pixels in a row that has been selected during the display period immediately before the stop period, to the signal lines corresponding to the respective pixels.

## Claims

### Claim 1

A display device that displays an image, the display device comprising:
a display area in which a plurality of pixels are aligned in row and column directions, each of the pixels including a drive element;
a plurality of scan lines extending in the row direction, each of the scan lines being coupled with the drive elements included in the pixels aligned in the row direction to transmit thereto a scan signal for selecting the pixels in the display area row by row;
a plurality of signal lines extending in the column direction, each of the signal lines being coupled with the drive elements included in the pixels aligned in the column direction to write display data of the image to be displayed on the display area to the pixels in a row selected by the scan signal;
a source driver that is a transmission source of the display data;
a plurality of switches that are provided between the source driver and the signal lines, that are coupled with the source driver and the signal lines, and that are coupled with the respective drive elements via the respective signal lines; and
a display control unit configured to:
alternately repeat a display period of writing the display data to the pixels and a stop period of stopping the writing of the display data to the pixels; and
in the stop period, turn off all the switches and turn off all the drive elements, wherein
during the entirety of the stop period, the signal lines hold the display data of one horizontal scanning period in the display period immediately before the stop period.

### Claim 2 (depends on 1)

The display device according to claim 1,
wherein each of the pixels includes a plurality of sub-pixels, and
wherein ends of one end the switches are coupled with one another and are supplied with the display data from the source driver, and ends of the other end of the switches are coupled with the respective sub-pixels via the respective signal lines.

### Claim 3 (depends on 1)

The display device according to claim 1, after the stop period, the display control unit writes the display data of one horizontal scanning period in the display period immediately before the stop period to the corresponding signal lines.

### Claim 4 (depends on 1)

An electronic apparatus comprising the display device according to claim 1.