Liquid crystal display device

Patent metadata

Field	Value
Publication number	US-2017192312-A1
Application number	US-201615207586-A
Country	US
Kind code	A1
Filing date	Jul 12, 2016
Priority date	Dec 31, 2015
Publication date	Jul 6, 2017
Grant date	—

Abstract

A liquid crystal display device includes first to fourth pixel electrodes neighbored each other in a first direction, a common electrode at least partially overlapping the first to fourth pixel electrodes, and a first data line and a second data line extended in a second direction different from the first direction, and neighbored each other where the first data line is interposed between the first pixel electrode and the second pixel electrode, the second data line is interposed between the third pixel electrode and the fourth pixel electrode, and at least one slit defined in the common electrode is interposed between the second pixel electrode and the third pixel electrode.

First claim

What is claimed is:

1 . A liquid crystal display device, comprising:
first to fourth pixel electrodes neighbored each other in a first direction; a common electrode at least partially overlapping the first to fourth pixel electrodes; and a first data line and a second data line extended in a second direction different from the first direction, and neighbored each other, wherein the first data line is interposed between the first pixel electrode and the second pixel electrode, and the second data line is interposed between the third pixel electrode and the fourth pixel electrode, and at least one slit is defined in the common electrode and interposed between the second pixel electrode and the third pixel electrode.

2 . The liquid crystal display device of claim 1 , wherein the at least one slit is separated from the first data line and the second data line in a plan view.

3 . The liquid crystal display device of claim 1 , wherein the at least one slit is defined in parallel to the first data line and the second data line.

4 . The liquid crystal display device of claim 1 , wherein the at least one slit and the first data line and the second data line are bent.

5 . The liquid crystal display device of claim 1 , wherein the second pixel electrode represents a green color to be displayed, and the third pixel electrode represents a blue color to be displayed.

6 . The liquid crystal display device of claim 1 , wherein data signals having different polarities are applied respectively to the first data line and the second data line.

7 . The liquid crystal display device of claim 1 , wherein at least one slit extending in the second direction is defined in each of the first to fourth pixel electrodes.

8 . The liquid crystal display device of claim 1 , further comprising a first gate line and a second gate line extended in the first direction and neighbored each other,
wherein the first to fourth pixel electrodes are interposed between the first gate line and the second gate line.

9 . The liquid crystal display device of claim 8 , further comprising:
a first switching element including a gate electrode connected to the first gate line, one electrode connected to the first data line, and the other electrode connected to the first pixel electrode; a second switching element including a gate electrode connected to the second gate line, one electrode connected to the first data line, and the other electrode connected to the second pixel electrode; a third switching element including a gate electrode connected to the second gate line, one electrode connected to the second data line, and the other electrode connected to the third pixel electrode; and a fourth switching element including a gate electrode connected to the first gate line, one electrode connected to the second data line, and the other electrode connected to the fourth pixel electrode.

10 . The liquid crystal display device of claim 8 , further comprising:
a first switching element including a gate electrode connected to the first gate line, one electrode connected to the first data line, and the other electrode connected to the first pixel electrode; a first switching element including a gate electrode connected to the second gate line, one electrode connected to the first data line, and the other electrode connected to the second pixel electrode; a first switching element including a gate electrode connected to the first gate line, one electrode connected to the second data line, and the other electrode connected to the third pixel electrode; and a first switching element including a gate electrode connected to the second gate line, one electrode connected to the second data line, and the other electrode connected to the fourth pixel electrode.

11 . The liquid crystal display device of claim 8 , wherein the at least one slit is interposed between the first gate line and the second gate line.

12 . A liquid crystal display device, comprising:
a first data line and a second data line neighbored each other on a lower substrate; first to fourth pixel electrodes neighbored each other on the first data line and the second data line; and a common electrode which at least partially overlaps the first to fourth pixel electrodes, and in which at least one slit is defined, wherein the first data line overlaps a first region between the first pixel electrode and the second pixel electrode, and the second data line overlaps a second region between the third pixel electrode and the fourth pixel electrode, and the at least one slit overlaps a third region between the second pixel electrode and the third pixel electrode.

13 . The liquid crystal display device of claim 12 , further comprising:
a first insulation layer interposed between the first and second data lines and the common electrode; and a second insulation layer interposed between the common electrode and the first to fourth pixel electrodes, wherein the first to fourth pixel electrodes are disposed on the second insulation layer.

14 . The liquid crystal display device of claim 13 , wherein the second insulation layer includes an inorganic material.

15 . The liquid crystal display device of claim 13 , further comprising an organic insulation layer interposed between the first insulation layer and the second insulation layer.

16 . The liquid crystal display device of claim 12 , wherein the at least one slit has a width wider than each of widths of the first and second data lines.

17 . The liquid crystal display device of claim 12 , wherein the second pixel electrode represents a green color to be displayed, and the third pixel electrode represents a blue color to be displayed.

18 . The liquid crystal display device of claim 12 , further comprising:
an upper substrate facing the lower substrate; and a black matrix disposed on the upper substrate so as to at least partially overlap the third region.

19 . A liquid crystal display device, comprising:
first to fourth pixel electrodes neighbored each other in a first direction; at least one slit defined in a common electrode and interposed between the second pixel electrode and the third pixel electrode; and a first data line and a second data line extended in a second direction different from the first direction, and disposed adjacent to each other, wherein the first data line is interposed between the first pixel electrode and the second pixel electrode and connected respectively to the first pixel electrode and the second pixel electrode, and the second data line is interposed between the third pixel electrode and the fourth pixel electrode and connected respectively to the third pixel electrode and the fourth pixel electrode, and no data line is disposed between the second pixel electrode and the third pixel electrode.

20 . The liquid crystal display device of claim 19 , further comprising a first gate line and a second gate line extended in the first direction, and disposed adjacent to each other,
wherein the first to fourth pixel electrodes are interposed between the first gate line and the second gate line.

21 . The liquid crystal display device of claim 20 , wherein the first gate line is electrically connected to the first and fourth pixel electrodes, and the second gate line is electrically connected to the second and third pixel electrodes.

22 . The liquid crystal display device of claim 20 , wherein the at least one slit is interposed between the

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Won Ho
• Kim Sung Man
• Song Min Chul
• Oh Hwa Yeul
• Jeon Yeon Mun

Classifications

• G02F1/136286 Primary

  Wiring, e.g. gate line, drain line · CPC title

• G02F1/134309 Primary

  characterised by their geometrical arrangement · CPC title

• G02F1/133707 Primary

  Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes · CPC title

• G09G3/3614

  Control of polarity reversal in general · CPC title

• G02F1/134363

  for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS] · CPC title