US 2006/0038948 A1 · Liquid crystal display device

Abstract

When the orientation of liquid crystal molecules in a pixel are divided by an orientation divider, a boundary of the orientation is produced at any part of the pixel. A drain signal line (54) is formed to overlap with the boundary so that a light-shielding region in the pixel is decreased and an aperture ratio can be improved. Leakage of light caused when the orientation is disturbed can be shielded by the drain signal line (54), and contrast can be enhanced. The orientation divider can be an orientation control window (36), an orientation control slope (90) or the like.

Claims28

Dependent claims

1-37. (canceled)

A liquid crystal display device, in which

vertical orientation liquid crystal is sealed between a first substrate and a second substrate which are opposed to each other;
a plurality of pixel electrodes each formed in each pixel, a gate signal line, and a data signal line are formed on a side of the first substrate;
a switching element which is connected to the gate signal line and the data signal line is provided, the pixel electrode being connected to the switching electrode;
an opposing electrode is formed on a side of the second substrate so as to oppose the plurality of pixel electrodes;
a rubbingless orientation film is formed over each of the first substrate and the second substrate, at an interface between a liquid crystal layer and each of the first substrate and the second substrate;
each pixel includes an orientation control window for dividing an orientation direction of the liquid crystal within a single pixel region into a plurality of directions, the orientation control window dividing the orientation direction of the liquid crystal by an electric field which is inclined with respect to a normal line of at least one of the pixel electrode and the opposing electrode;
a region in which the orientation control window is formed and a region in which the data signal line is formed overlap with each other;
and
in a region in which the data signal line and the orientation control window overlap with each other, a width of the data signal line is smaller than a width of the orientation control window.

6 more elements

A liquid crystal display device, in which

vertical orientation liquid crystal is sealed between a first substrate and a second substrate which are opposed to each other;
a plurality of pixel electrodes each formed for each pixel are formed on a side of the first substrate;
an opposing electrode is formed on a side of the second substrate so as to oppose the plurality of pixel electrodes;
a storage capacitor line is further formed on the side of the first substrate, the storage capacitor line forming a storage capacitor which is connected in parallel to a liquid crystal capacitor formed in a region where the pixel electrode is opposed to the opposing electrode with a liquid crystal layer being disposed therebetween;
a rubbingless orientation film is formed over each of the first substrate and the second substrate, at an interface between the liquid crystal layer and each of the first substrate and the second substrate;
each pixel includes an orientation control window for dividing an orientation direction of the liquid crystal within a single pixel region into a plurality of directions, the orientation control window dividing the orientation direction of the liquid crystal by an electric field which is inclined with respect to a normal line of at least one of the pixel electrode and the opposing electrode;
a region in which the orientation control window is formed and a region in which the storage capacitor line is formed overlap with each other;
and
in a region in which the storage capacitor line and the orientation control window overlap with each other, a width of the storage capacitor line is smaller than a width of the orientation control window.

6 more elements

A liquid crystal display device, in which

vertical orientation liquid crystal is sealed between a first substrate and a second substrate which are opposed to each other;
a plurality of pixel electrodes each formed for each pixel, a storage capacitor line connected to a storage capacitor, a gate signal line, and a data signal line are formed on a side of the first substrate;
a switching element which is connected to the gate signal line and the data signal line is provided, the pixel electrode being connected to the switching electrode;
an opposing electrode is formed on a side of the second substrate so as to oppose the plurality of pixel electrodes;
a rubbingless orientation film is formed over each of the first substrate and the second substrate, at an interface between a liquid crystal layer and each of the first substrate and the second substrate;
each pixel includes an orientation control window for dividing an orientation direction of the liquid crystal within a single pixel region into a plurality of directions, the orientation control window dividing the orientation direction of the liquid crystal by an electric field which is inclined with respect to a normal line of at least one of the pixel electrode and the opposing electrode;
a region in which the orientation control window is formed and each of regions in which the gate signal line, the data signal line, and the storage capacitor line are formed, respectively, overlap with each other;
and
in each of the overlapping portions in which the orientation control window overlaps with the gate signal line, the data signal line, and the storage capacitor line, respectively, a width of the gate signal line, a width of the data signal line, and a width of the storage capacitor line are smaller than a width of the orientation control window at corresponding overlapping portions.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application

11/250,088Filed 12 Oct 2005

Priority

JP 10-33784027 Nov 1998

Published

23 Feb 2006

Term ends

Not estimatedThe source records don’t support an estimate.

Classification10 codes

G02F 1/133707
Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers: structures for producing distorted electric fields, e.g.…
G02F 1/134309
Electrodes: characterised by their geometrical arrangement
G02F 1/136286
Active matrix addressed cells: wiring, e.g. gate line, drain line
G02F 1/1393
Based on orientation effects in which the liquid crystal remains transparent: the birefringence of the liquid crystal being electrically…

Liquid crystal display device

Life of this patent

Liquid crystal display device

Life of this patent

Abstract

Claims28