Liquid crystal display device

Patent metadata

Field	Value
Publication number	US-9733533-B2
Application number	US-201514750484-A
Country	US
Kind code	B2
Filing date	Jun 25, 2015
Priority date	May 29, 2012
Publication date	Aug 15, 2017
Grant date	Aug 15, 2017

Abstract

According to one embodiment, a liquid crystal display device includes a first substrate including a first source line and a second source line, a first main pixel electrode of a strip shape, a second main pixel electrode of a strip shape. The first substrate is configured such that a first distance between the first main pixel electrode and the first source line is less than a second distance between the first main pixel electrode and the second source line, and a third distance between the second main pixel electrode and the first source line is greater than a fourth distance between the second main pixel electrode and the second source line.

First claim

What is claimed is:

1. A liquid crystal display device comprising:
a first substrate including a plurality of gate lines extending in a first direction, a first storage capacitance line located in a first area sandwiched between first and second gate lines on one end side of the first substrate and extending in the first direction, a second storage capacitance line located in a second area sandwiched between third and fourth gate lines different from the first and second gate lines of the first area on another end side of the first substrate and extending in the first direction, a first source line and a second source line which are disposed with a distance in the first direction and extend in a second direction perpendicular to the first direction from the first area to the second area, a first pixel electrode which is electrically connected to the first source line in the first area and is located between the first source line and the second source line, and a second pixel electrode which is electrically connected to the first source line in the second area and is located between the first source line and the second source line,
a second substrate disposed to be opposed to the first substrate; and
a liquid crystal layer held between the first substrate and the second substrate,
wherein the first storage capacitance line includes a first electrode portion extending in the second direction along the first source line and having a first width between the first source line and the second source line, and a second electrode portion extending in the second direction along the second source line and having a second width between the first source line and the second source line,
the second width is greater than the first width,
the second storage capacitance line includes a third electrode portion extending in the second direction along the first source line and having a third width between the first source line and the second source line, and a fourth electrode portion extending in the second direction along the second source line and having a fourth width between the first source line and the second source line, and
the fourth width is less than the third width.

2. The liquid crystal display device of claim 1 , wherein the first substrate further includes a source driver, wherein the first area is located on a side of the substrate of the source driver and the second area is located on a side opposite the source driver.

3. The liquid crystal display device of claim 1 , wherein each of the first pixel electrode and second pixel electrode includes a main pixel electrode of a strip shape extending in the second direction and a sub-pixel electrode of a strip shape extending in the first direction, and is formed in a cross shape.

4. The liquid crystal display device of claim 1 , wherein the first substrate further includes a first main common electrode opposed to the first source line, and a second main common electrode having the same potential as the first main common electrode and opposed to the second source line.

5. The liquid crystal display device of claim 1 , wherein the first substrate further includes a third storage capacitance line located in a third area between the first area and the second area, sandwiched between fifth and sixth gate lines different from the first and second gate lines of the first area and the third and fourth gate lines of the second area, and extending in the first direction, and a third pixel electrode which is electrically connected to the first source line in the third area and is located between the first source line and the second source line,
the third storage capacitance line includes a fifth electrode portion extending in the second direction along the first source line and having a fifth width between the first source line and the second source line, and a sixth electrode portion extending in the second direction along the second source line and having a sixth width between the first source line and the second source line, and
the sixth width is substantially equal to the fifth width.

6. The liquid crystal display device of claim 1 , wherein the first source line is supplied with a video signal of a positive polarity in a first frame and is supplied with a video signal of a negative polarity in a second frame which follows the first frame, and the second source line is supplied with a video signal of a negative polarity in the first frame and is supplied with a video signal of a positive polarity in the second frame.

7. The liquid crystal display device of claim 1 , wherein the second substrate further includes a third main common electrode opposed to the first source line, and a fourth main common electrode having the same potential as the third main common electrode and opposed to the second source line.

8. The liquid crystal display device of claim 4 , wherein the second substrate further includes a third main common electrode having the same potential as the first main common electrode and opposed to the first main common electrode, and a fourth main common electrode having the same potential as the second main common electrode and opposed to the second main common electrode.

9. The liquid crystal display device of claim 1 , wherein the first substrate further includes a first sub-common electrode extending in the first direction, and
the second substrate further includes a second sub-common electrode having the same potential as the first sub-common electrode and opposed to the first sub-common electrode.

10. The liquid crystal display device of claim 4 , wherein the first substrate further includes a first sub-common electrode which is continuous with the first main common electrode and the second main common electrode and extends in the first direction, and
the second substrate further includes a second sub-common electrode having the same potential as the first sub-common electrode and opposed to the first sub-common electrode.

Assignees

• Japan Display Inc

Inventors

• Hirosawa Jin

Classifications

• G02F1/13439

  characterised by their electrical, optical, physical properties; materials therefor; method of making · CPC title

• G02F2001/134318

  Physics · mapped topic

• G02F2001/133738

  Physics · mapped topic

• G02F1/134363 Primary

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

• G02F2001/13706

  Physics · mapped topic