Display device

Patent metadata

Field	Value
Publication number	US-9804453-B2
Application number	US-201414422749-A
Country	US
Kind code	B2
Filing date	Apr 25, 2014
Priority date	Dec 10, 2013
Publication date	Oct 31, 2017
Grant date	Oct 31, 2017

Abstract

The embodiment of the present invention discloses a display device, which relates to the field of display, may realize low-frequency (low-standing-wave) driving and may prevent the aperture ratio from being reduced as a result of ensuring the charge rate during high-frequency driving. The display device provided by the present invention comprises a first substrate and a second substrate which are assembled with each other to form a cell, wherein the first substrate comprises a first electrode layer, the second substrate comprises a second electrode layer, the first substrate further comprises a third electrode layer arranged on one side, far from the second substrate, of the first electrode layer, and an insulation layer is arranged between the third electrode layer; and the first electrode layer, and the third electrode layer is electrically connected with the second electrode layer. The display device is suitable for being driven at low frequency.

First claim

The invention claimed is:

1. A display device, comprising a first substrate and a second substrate which are assembled with each other to form a cell, the first substrate comprising a first electrode layer, the second substrate comprising a second electrode layer, wherein the first substrate further comprises a third electrode layer disposed on one side of the first electrode layer away from the second substrate, and an insulation layer is provided between the third electrode layer and the first electrode layer, and
the third electrode layer is detachably connected with the second electrode layer under control of a switch provided therebetween, and the switch is turned off to reduce a storage capacitance of the display device when the display device is driven at a frequency of 60 Hz or 120 Hz.

2. The display device of claim 1 , wherein the first substrate is a color filter substrate, and the insulation layer is a color filter layer.

3. The display device of claim 2 , wherein the color filter layer comprises a black matrix and color resisting blocks spaced by the black matrix.

4. The display device of claim 1 , wherein,
the display device further comprises a conductive spacer, and the third electrode layer is electrically connected with the second electrode layer through the spacer.

5. The display device of claim 4 , wherein,
the first substrate is provided with a via hole penetrating through the first electrode layer and the insulation layer, and the spacer is connected to the third electrode layer through the via hole.

6. The display device of claim 1 , wherein,
the second electrode layer is provided with slit electrodes.

7. The display device of claim 1 , wherein,
the second electrode layer is provided with slit electrodes.

8. The display device of claim 2 , wherein,
the second electrode layer is provided with slit electrodes.

9. The display device of claim 3 , wherein,
the second electrode layer is provided with slit electrodes.

10. The display device of claim 4 , wherein,
the second electrode layer is provided with slit electrodes.

11. The display device of claim 5 , wherein,
the second electrode layer is provided with slit electrodes.

12. The display device of claim 6 , wherein,
the second electrode layer is a pixel electrode layer, and the slit electrodes are pixel electrodes.

13. The display device of claim 12 , wherein the second substrate is also provided with thin film transistors connected with the pixel electrodes;
the first electrode layer is connected with drains of the thin film transistors through the spacer.

14. The display device of claim 1 , wherein,
the first electrode layer, the second electrode layer and the third electrode layer are all transparent conductive films.

15. The display device of claim 1 , wherein,
the total thickness of the first electrode layer, the second electrode layer and the third electrode layer is less than 1,000 Å.

Assignees

• Boe Technology Group Co Ltd

Inventors

• Choi Hyunsic
• Kim Heecheol

Classifications

• G02F1/134309 Primary

  characterised by their geometrical arrangement · CPC title

• G02F2201/121

  common or background · CPC title

• G02F1/1368

  in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)} · CPC title

• G02F2001/136222

  Physics · mapped topic

• G02F2202/16

  conductive · CPC title