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US 10,254,599 B2Granted
Liquid crystal display device
AssigneeJapan Display Inc.
InventorToshiharu Matsushima
Life of this patent
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Abstract
According to an aspect, a liquid crystal display device includes a first substrate, a second substrate, a liquid crystal layer, a first electrode, and a second electrode. The first electrode includes an electrode base portion extending in a first direction, and a plurality of comb tooth portions extending in a second direction different from the first direction and protruding from the electrode base portion with a certain distance interposed therebetween. At least one of the first substrate and the second substrate includes a light-blocking part that reduces intensity of light passing therethrough at a position overlapping with at least one of the center of the comb tooth portion and the center between the adjacent comb tooth portions in a direction perpendicular to the first substrate.
Claims16
A liquid crystal display device comprising:
- a first substrate;
- a second substrate arranged to be opposed to the first substrate;
- a liquid crystal layer arranged between the first substrate and the second substrate;
- a first electrode arranged between the first substrate and the liquid crystal layer;
- and
- a second electrode arranged at a position opposed to the first electrode, wherein
- the first electrode comprises:
- a plurality of electrode base portions extending in a first direction;
- a plurality of first comb tooth portions protruding from each of the electrode base portions in a comb teeth shape with a certain distance interposed therebetween in the first direction and extending in a second direction different from the first direction;
- and
- a plurality of second comb tooth portions protruding from each of the electrode base portions in a comb teeth shape with a certain distance interposed therebetween in the first direction and extending in a direction opposite to the second direction,
- tips of the first comb tooth portions and tips of the second comb tooth portions extending from the adjacent electrode base portions are opposed to each other with a gap therebetween,
- left and right sides of each of the first and second comb tooth portions facing each other in the second direction are oblique in a line symmetrical manner,
- the left and right sides of each of the first and second comb tooth portions protruding from an identical electrode base portion of the electrode base portions are line symmetric about the identical electrode base portion,
- at least one of the first substrate and the second substrate includes a plurality of light-blocking parts at a position each overlapping with a disclination line that is a boundary between clockwise rotation and counterclockwise rotation of liquid crystal molecules in the liquid crystal layer, and in which the liquid crystal molecules hardly move when a voltage is applied to the first electrode, the disclination line being generated at, at least one of a center axis of each of the comb tooth portions and a center between the adjacent comb tooth portions in a direction perpendicular to the first substrate, and
- an average interval between the light-blocking parts is equal to or smaller than 10 μm.
13 more elements
A liquid crystal display device comprising:
- a first substrate;
- a second substrate arranged to be opposed to the first substrate;
- a liquid crystal layer arranged between the first substrate and the second substrate;
- a first electrode arranged between the first substrate and the liquid crystal layer;
- and
- a second electrode arranged at a position opposed to the first electrode, wherein
- the first electrode comprises:
- a plurality of electrode base portions extending in a first direction;
- a plurality of first comb tooth portions protruding from each of the electrode base portions in a comb teeth shape with a certain distance interposed therebetween in the first direction and extending in a second direction different from the first direction;
- and
- a plurality of second comb tooth portions protruding from each of the electrode base portions in a comb teeth shape with a certain distance interposed therebetween in the first direction and extending in a direction opposite to the second direction,
- tips of the first comb tooth portions and tips of the second comb tooth portions extending from the adjacent electrode base portions are opposed to each other with a gap therebetween,
- left and right sides of each of the first and second comb tooth portions facing each other in the second direction are oblique in a line symmetrical manner,
- the left and right sides of each of the first and second comb tooth portions protruding from an identical electrode base portion of the electrode base portions are line symmetric about the identical electrode base portion,
- at least one of the first substrate and the second substrate includes a light-blocking part at a position overlapping with a disclination line that is a boundary between clockwise rotation and counterclockwise rotation of liquid crystal molecules in the liquid crystal layer, and in which the liquid crystal molecules hardly move when a voltage is applied to the first electrode, the disclination line being generated at at least one of a center axis of each of the comb tooth portions and a center between the adjacent comb tooth portions in a direction perpendicular to the first substrate,
- a plurality of pixels each including a plurality of sub-pixels are arranged in a matrix, and
- the light-blocking part is provided to the first substrate, and a material of the light-blocking part is the same as that of a signal line or a scanning line.
14 more elements
Dependencies are inferred from the claim text.