Liquid crystal display device
AssigneeHitachi Displays, Ltd.
InventorHirotaka Imayama
Life of this patent
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Abstract
Provided is a liquid crystal display device including: a thin film transistor substrate; a counter substrate which is arranged to face the thin film transistor substrate in an opposed manner; and a liquid crystal layer sandwiched between the thin film transistor substrate and the counter substrate, wherein the thin film transistor substrate includes a first electrode and a second electrode for applying an electric field in a substrate in-plane direction, the first electrode includes a plurality of strip portions which extend in a predetermined direction, and a chiral dopant which imparts the rotation in a direction opposite to a rotational direction of liquid crystal induced by an electric field applied between the strip portions and the second electrode is added to the liquid crystal layer.
Claims8
A liquid crystal display device comprising:
- a thin film transistor substrate;
- a counter substrate which is arranged to face the thin film transistor substrate in an opposed manner;
- and
- a liquid crystal layer sandwiched between the thin film transistor substrate and the counter substrate, wherein
- the thin film transistor substrate includes a first electrode and a second electrode for applying an electric field in a substrate in-plane direction,
- the first electrode includes a plurality of strip portions which extend in a predetermined direction,
- a chiral dopant which imparts the rotation in a direction opposite to a rotational direction of liquid crystal induced by an electric field applied between the strip portions and the second electrode is added to the liquid crystal layer;
- the first electrode further includes bent portions which are bent from the strip portions and extend in a direction different from the predetermined direction,
- a direction of initial alignment direction of liquid crystal molecules in the liquid crystal layer is inclined by an angle θ (0°<θ<90°) with reference to the strip portions,
- a direction that the bent portions extend is inclined by an angle φ (0°<φ<90°) with reference to the strip portions on the same side as a side where the initial alignment direction is inclined;
- and
- the angle φ that the bent portions are inclined with reference to the strip portions is set larger than the angle θ that the initial alignment direction is inclined with reference to the strip portions.
A liquid crystal display device comprising:
- a thin film transistor substrate;
- a counter substrate which is arranged to face the thin film transistor substrate in an opposed manner;
- and
- a liquid crystal layer sandwiched between the thin film transistor substrate and the counter substrate, wherein
- the thin film transistor substrate includes a first electrode and a second electrode for applying an electric field in a substrate in-plane direction,
- the first electrode includes a plurality of strip portions which extend in a predetermined direction,
- a chiral dopant which imparts the rotation in a direction opposite to a rotational direction of liquid crystal induced by an electric field applied between the strip portions and the second electrode is added to the liquid crystal layer,
- the plurality of strip portions are a plurality of first strip portions,
- the first electrode includes a plurality of second strip portions which extends in a predetermined direction different from the first strip portions,
- a trunk portion which is connected to the respective first strip portions and the respective second strip portions,
- a direction of an initial alignment direction of liquid crystal molecules in the liquid crystal layer is inclined by an angle θ (0°<θ<90°) with reference to the first strip portions,
- a direction that the second strip portions extend is inclined toward a side opposite to a side that the first strip portions are inclined with reference to the initial alignment direction, and
- a region to which an electric field is applied by the plurality of first strip portions and the second electrode is set larger than a region to which an electric field is applied by the plurality of second strip portions and the second electrode.
Dependencies are inferred from the claim text.