DISPLAY DEVICE

• US 20170192274A1
• Filed: 03/20/2017
• Published: 07/06/2017
• Est. Priority Date: 05/16/2014
• Status: Active Grant

• Current Assignee: Japan Display Incorporated
• Original Assignee: Japan Display Incorporated
• Inventors: OUE, Yoshihide, KANEKO, Hideki
• Granted Patent: US 10,185,170 B2
• Time in Patent Office: Days
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/134336 Matrix
• CPC Class Codes: G02F 1/134345 Subdivided pixels, e.g. for grey scale or redundancy
• CPC Class Codes: G02F 1/13439 characterised by their electrical, optical, physical properties; materials therefor; method of making
• CPC Class Codes: G02F 1/136286 Wiring, e.g. gate line, drain line
• CPC Class Codes: G02F 1/1368 in which the switching element is a three-electrode device G02F1/136277 takes precedence
• CPC Class Codes: G02F 2201/123 pixel
• CPC Class Codes: G02F 2201/40 Arrangements for improving the aperture ratio
• CPC Class Codes: G06F 2203/04108 Touchless 2D- digitiser, i.e. digitiser detecting the X/Y position of the input means, finger or stylus, also when it does not touch, but is proximate to the digitiser's interaction surface without distance measurement in the Z direction
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/04166 Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally G06F3/04184
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• CPC Class Codes: G09G 2300/0408 Integration of the drivers onto the display substrate
• CPC Class Codes: G09G 2300/0452 Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
• CPC Class Codes: G09G 2300/0465 Improved aperture ratio, e.g. by size reduction of the pixel circuit, e.g. for improving the pixel density or the maximum displayable luminance or brightness
• CPC Class Codes: G09G 2310/08 Details of timing specific for flat panels, other than clock recovery
• CPC Class Codes: G09G 3/3607 for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels display of colours in flat matrix panels other than liquid crystal displays G09G3/2003; grey scales specific for television H04N3/127
• CPC Class Codes: G09G 3/3648 using an active matrix G09G3/367 - G09G3/3696 take precedence
• CPC Class Codes: G09G 3/3655 : Details of drivers for counter electrodes, e.g. common electrodes for pixel capacitors or supplementary storage capacitors
• CPC Class Codes: G09G 3/3677 : suitable for active matrices only
• CPC Class Codes: G09G 3/3688 : suitable for active matrices only

Abstract

A display device is provided. The display device includes a first sub-pixel and a second sub-pixel that are arranged adjacent to each other in a first direction and that represent a first color; a third sub-pixel and a fourth sub-pixel that are arranged adjacent to each other in the first direction and that represent a second color; a first drive electrode that overlaps the first sub-pixel and the second sub-pixel, and that extends in the first direction; and a second drive electrode that overlaps the third sub-pixel and the fourth sub-pixel, and that extends in the first direction, wherein, the first and second sub-pixels and the third and fourth sub-pixels are arranged adjacent to each other in a second direction different from the first direction, the first drive electrode and the second drive electrode are separated from each other with a slit interposed therebetween, and the slit extends in the first direction.

Claims

1. A display device comprising:

a first sub-pixel and a second sub-pixel that are arranged adjacent to each other in a first direction and that represent a first color;

a third sub-pixel and a fourth sub-pixel that are arranged adjacent to each other in the first direction and that represent a second color;

a first drive electrode that overlaps the first sub-pixel and the second sub-pixel, and that extends in the first direction; and

a second drive electrode that overlaps the third sub-pixel and the fourth sub-pixel, and that extends in the first direction, wherein,

the first and second sub-pixels and the third and fourth sub-pixels are arranged adjacent to each other in a second direction different from the first direction,

the first drive electrode and the second drive electrode are separated from each other with a slit interposed therebetween, and

the slit extends in the first direction.

2. The display device according to claim 1, further comprising:

a first substrate;

a second substrate; and

a liquid crystal layer interposed between the first substrate and the second substrate, wherein,

the first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel each include a switching element and a pixel electrode, and

the liquid crystal layer is driven by an electric field formed between the pixel electrode and the first drive electrode or the second drive electrode.

3. The display device according to claim 2, wherein the first drive electrode and the second drive electrode are disposed above the first substrate.

4. The display device according to claim 2, further comprising:

a first color filter that corresponds to the first sub-pixel and the second sub-pixel; and

a second color filter that corresponds to the third sub-pixel and the fourth sub-pixel.

5. The display device according to claim 4, wherein the first color filter and the second color filter are disposed above the second substrate.

6. The display device according to claim 2, further comprising:

a data line that couples the switching element of the first sub-pixel to the switching element of the third sub-pixel and that extends in the second direction.

7. The display device according to claim 2, wherein,

the first substrate has a first edge side extending in the first direction, and includes a region coupled to a driver integrated circuit along the first edge side.

8. The display device according to claim 1, further comprising:

a touch detection electrode that overlaps the first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel, and that extends in the second direction.

9. The display device according to claim 2, further comprising:

a touch detection electrode that overlaps the first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel, and that extends in the second direction,

wherein the touch detection electrode is disposed above a surface of the second substrate, the surface being opposite to a surface thereof above which the liquid crystal layer is disposed.