# US 2014/0191932 A1 · Liquid crystal display device

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- Number: US 2014/0191932 A1
- Document ID: US20140191932A1
- Status: Published application
- Kind: A1
- Application number: 14/151,074
- Filed: 2014-01-09
- Published: 2014-07-10
- Earliest claimed: 2013-01-10
- Assignees: Japan Display Inc.
- Applicants: Japan Display Inc.
- Inventors: Hideyuki TAKAHASHI
- Web page: https://patentgrep.com/patent/US20140191932A1

## CPC

- G09G 3/3648: {using an active matrix (G09G3/367 - G09G3/3696 take precedence)}
- G09G 3/3688: {suitable for active matrices only}
- G09G 2320/0233: Improving the luminance or brightness uniformity across the screen
- G09G 2320/0247: Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes
- 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 one embodiment, a liquid crystal display device includes pixel electrodes arranged in matrix, gate lines, source lines, pixel switches, gate drivers allocated at both ends of a display region, a source driver, image signal transmit lines arranged along the columns in which the pixel electrodes are arranged, each image signal transmit line supplying an image signal to each source line, switches arranged along the row direction, each switch configured to switch a connection between the source line and the image signal transmit line, and control lines configured to output source control signals to switch the switches, each control line outputting a source control signal to switch a plurality of the switches at the same time, wherein each source control signal is input to each control line at a position substantially the center of the gate line in the row direction.

## Claims

### Claim 1

A liquid crystal display device comprising:
pixel electrodes arranged in matrix;
gate lines arranged along rows in which the pixel electrodes are arranged;
source lines arranged along columns in which the pixel electrodes are arranged;
pixel switches configured to switch a connection between the pixel electrodes and the source lines in accordance with drive signals supplied from the gate lines;
a first gate driver configured to connect to one end of the gate lines and output the drive signals to the gate lines;
a second gate driver configured to connect to the other end of the gate lines and output the drive signals to the gate lines;
image signal transmit lines arranged along the columns in which the pixel electrodes are arranged, each image signal transmit line supplying an image signal to each source line;
a source driver configured to output the image signals to the image signal transmit lines;
switches arranged along the row direction, each switch configured to switch a connection between the source line and the image signal transmit line; and
control lines configured to output source control signals to switch the switches, each control line outputting a source control signal to switch a plurality of the switches at the same time, wherein
the drive signals output to the gate line from the first and second gate drivers are the same, and
each source control signal is input to each control line at a position substantially the center of the gate line in the row direction.

### Claim 2 (depends on 1)

The liquid crystal display device of claim 1, wherein
the control lines are organized by display color, and
each source control signal is input to each control line at a position substantially the center of the gate line in the row direction by display color.

### Claim 3 (depends on 2)

The liquid crystal display device of claim 2, wherein
terminals of the switches which are adjacent to each other and organized by color are connected thereto as a unit at the image signal transmit line side.

### Claim 4

A liquid crystal display device comprising:
pixel electrodes arranged in matrix;
gate lines arranged along rows in which the pixel electrodes are arranged;
source lines arranged along columns in which the pixel electrodes are arranged;
pixel switches configured to switch a connection between the pixel electrodes and the source lines in accordance with a drive signals supplied from the gate lines;
a gate driver configured to connect to one end of the gate lines and output the drive signals to the gate lines;
image signal transmit lines arranged along the columns in which the pixel electrodes are arranged, each image signal transmit line supplying an image signal to each source line;
a source driver configured to output the image signals to the image signal transmit lines;
switches arranged along the row direction, each switch configured to switch a connection between the source line and the image signal transmit line; and
control lines configured to output source control signals to switch the switches, each control line outputting a source control signal to switch a plurality of the switches at the same time, wherein each source control signal is input to one end of each control line at the side opposite to the gate driver in the row direction.

### Claim 5 (depends on 4)

The liquid crystal display device of claim 4, wherein
the control lines are organized by display color, and
each source control signal is input to one end of each control line at the side opposite to the gate driver in the row direction by display color.

### Claim 6 (depends on 5)

The liquid crystal display device of claim 5, wherein
terminals of the switches which are adjacent to each other and organized by color are connected thereto as a unit at the image signal transmit line side.