Liquid crystal display device

Patent metadata

Field	Value
Publication number	US-2016357074-A1
Application number	US-201615181609-A
Country	US
Kind code	A1
Filing date	Jun 14, 2016
Priority date	Oct 20, 2010
Publication date	Dec 8, 2016
Grant date	—

Abstract

In one embodiment, a liquid crystal display device includes a first substrate and a second substrate. In the first substrate, gate lines extend in a first direction, and a first source line and a second source line extend in a second direction orthogonally crossing the first direction. A pixel electrode having a first belt-like main electrode is arranged approximately in a central portion between the first source line and the second source line and extending in the second direction. A first belt-like sub-electrode covers the gate line between the first source line and the second source line and extending in the first direction. The second substrate includes a counter electrode having a second main electrode arranged on the first and second source lines and extending in the second direction. A liquid crystal layer is held between the first substrate and the second substrate.

First claim

1 - 19 . (canceled)

20 . A liquid crystal display device formed of a plurality of pixels, comprising:
a first substrate including:
a gate line extending in a first direction,
a capacitance line extending in the first direction,
a first source line and a second source line extending in a second direction orthogonally crossing the first direction,
a pixel electrode including:
a first belt like main electrode arranged approximately in a central portion between the first source line and the second source line and extending in the second direction,
a first belt-like sub-electrode covering the gate line between the first source line and the second source line and extending in the first direction, and
a second belt-like sub-electrode covering the capacitance line between the first source line and the second source line on an opposite side of the first belt-like main electrode than the first belt-like sub-electrode, the second belt-like sub-electrode being substantially a same length as the first belt-like sub-electrode;

a second substrate; and a liquid crystal layer held between the first substrate and the second substrate.

21 . The liquid crystal display device according to claim 20 , wherein the gate line and the first sub-electrode are arranged at one end portion of the pixel, and a line inversion drive or a dot inversion drive is employed.

22 . The liquid crystal display device according to claim 20 , wherein the capacitance line is arranged at another end of the pixel.

23 . The liquid crystal display device according to claim 20 , wherein a transmitting portion to contribute to an image display is formed between the first main electrode and the first and second source lines.

24 . The liquid crystal display device according to claim 20 , wherein
the first substrate further includes a first alignment film to which a rubbing processing is performed in a first rubbing direction, and covering the pixel electrode, the second substrate further includes a second alignment film to which a rubbing processing is performed in a second rubbing direction which is a reverse direction and in parallel with the first rubbing direction, and the first and second rubbing directions respectively cross the first main electrode at an angle.

25 . A liquid crystal display device formed of a plurality of pixels, comprising:
a first substrate including:
a gate line extending in a first direction,
a capacitance line extending in the first direction,
a first source line and a second source line extending in a second direction orthogonally crossing the first direction, and
a pixel electrode including:
a first belt-like main electrode extending in the first direction,
a first belt-like sub-electrode covering the gate line between the first source line and the second source line and extending in the first direction, and
a capacitance portion covering the capacitance line between the first source line and the second source line on an opposite side of the first belt-like main electrode than the first belt-like sub-electrode, the second belt-like sub-electrode being substantially a same length as the first belt-like sub-electrode;

a second substrate; and a liquid crystal layer held between the first substrate and the second substrate.

26 . The liquid crystal display device according to claim 25 , wherein the first substrate further includes a belt-like end electrode arranged at one end portion of the pixel electrode and connected with the pixel electrode, the belt-like end electrode extends in the first direction, and a line inversion drive or a dot inversion drive is employed.

27 . The liquid crystal display device according to claim 25 , wherein the gate line and the first sub-electrode are arranged approximately in a central portion of the pixel.

28 . The liquid crystal display device according to claim 25 , wherein the first belt-like main electrode is formed in a comb-like shape including a plurality of main electrode elements.

29 . The liquid crystal display device according to claim 25 , wherein the capacitance line is arranged at another end of the pixel.

30 . The liquid crystal display device according to claim 25 , wherein a transmitting portion to contribute to an image display is formed between the first main electrode and the first and second source lines.

31 . The liquid crystal display device according to claim 25 , wherein
the first substrate further includes a first alignment film to which a rubbing processing is performed in a first rubbing direction, and covering the pixel electrode, the second substrate further includes a second alignment film to which a rubbing processing is performed in a second rubbing direction which is a reverse direction and in parallel with the first rubbing direction, and the first and second rubbing directions respectively cross the first main electrode at an angle.

32 . A liquid crystal display device formed of a plurality of pixels, comprising:
a first substrate including:
a gate line extending in a first direction,
a capacitance line extending in the first direction,
a first source line and a second source line extending in a second direction orthogonally crossing the first direction, and
a pixel electrode including:
a first belt-like main electrode extending in an oblique direction crossing the first and second directions,
a first belt-like sub-electrode covering the gate line between the first source line and the second source line and extending in the first direction, and
a capacitance portion covering the capacitance line between the first source line and the second source line on an opposite side of the first belt-like main electrode than the first belt-like sub-electrode, the second belt-like sub-electrode being substantially a same length as the first belt-like sub-electrode;

a second substrate; and a liquid crystal layer held between the first substrate and the second substrate.

33 . The liquid crystal display device according to claim 32 , wherein the gate line and the first sub-electrode are arranged approximately in a central portion of the pixel.

34 . The liquid crystal display device according to claim 32 , wherein the capacitance line is arranged at another end of the pixel.

35 . The liquid crystal display device according to claim 32 , wherein a transmitting portion to contribute to an image display is formed between the first main electrode and the first and second source lines.

36 . The liquid crystal display device according to claim 32 , wherein
the first substrate further includes a first alignment film to which a rubbing processing is performed in a first rubbing direction, and covering the pixel electrode, the second substrate further includes a second alignment film to which a rubbing processing is performed in a second rubbing direction which is a reverse direction and in parallel with the first rubbing direction, and the first and second rubbing directions respectively cross the first main electrode at an angle.

Assignees

• Japan Display Inc

Inventors

• Hirosawa Jin
• Takeda Arihiro
• Fukuoka Nobuko
• Morita Yusuke
• Daishi Kazuya

Classifications

• G02F1/13439

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

• G02F1/136286

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

• G02F1/134309 Primary

  characterised by their geometrical arrangement · CPC title

• G02F1/13306

  Circuit arrangements or driving methods for the control of single liquid crystal cells (G02F1/132, G02F1/133382 take precedence) · CPC title

• G02F1/133784

  by rubbing · CPC title