Liquid crystal display device
AssigneePanasonic Liquid Crystal Display Co., Ltd.
InventorKikuo Ono
Life of this patent
Estimating the term…
Abstract
A liquid crystal display device comprises: a first liquid crystal cell being a lateral electric field driven type; a second liquid crystal cell being a lateral electric field driven type; a first polarizing plate and a second polarizing plate, which are disposed so as to sandwich the first liquid crystal cell; and a third polarizing plate and a fourth polarizing plate, which are disposed so as to sandwich the second liquid crystal cell. The liquid crystal display device is configured such that rotation of a liquid crystal molecule of the first liquid crystal cell and rotation of a liquid crystal molecule of the second liquid crystal cell cancel and compensate for a hue change of the first liquid crystal cell or the second liquid crystal cell when viewed from a predetermined direction.
Claims20
A liquid crystal display device comprising:
- a first liquid crystal cell including a first liquid crystal layer provided between a first substrate and a second substrate, a first pixel electrode, and a first common electrode, the first pixel electrode and the first common electrode being provided in each of a plurality of display unit regions;
- a second liquid crystal cell including a second liquid crystal layer provided between a third substrate and a fourth substrate, a second pixel electrode, and a second common electrode, the second pixel electrode and the second common electrode being provided in each of a plurality of display unit regions;
- a first polarizing plate and a second polarizing plate, which are disposed so as to sandwich the first liquid crystal cell;
- and
- a third polarizing plate and a fourth polarizing plate, which are disposed so as to sandwich the second liquid crystal cell,
- wherein in the first liquid crystal cell, an alignment axis of the first substrate and an alignment axis of the second substrate against a liquid crystal molecule of the first liquid crystal layer are substantially parallel to each other, and the liquid crystal molecule of the first liquid crystal layer rotates by a transverse electric field generated between the first pixel electrode and the first common electrode,
- in the second liquid crystal cell, an alignment axis of the third substrate and an alignment axis of the fourth substrate against a liquid crystal molecule of the second liquid crystal layer are substantially parallel to each other, and the liquid crystal molecule of the second liquid crystal layer rotates by a transverse electric field generated between the second pixel electrode and the second common electrode,
- the first liquid crystal cell and the second liquid crystal cell are laminated such that the second substrate and the third substrate become inside,
- the second polarizing plate and the third polarizing plate are disposed between the first liquid crystal cell and the second liquid crystal cell,
- a polarization axis of the second polarizing plate and a polarization axis of the third polarizing plate are substantially parallel to each other,
- a polarization axis of the first polarizing plate and a polarization axis of the fourth polarizing plate are substantially orthogonal to the polarization axis of the second polarizing plate, and
- the liquid crystal display device is configured such that rotation of the liquid crystal molecule of the first liquid crystal layer and rotation of the liquid crystal molecule of the second liquid crystal layer cancel and compensate for a hue change of the first liquid crystal cell or the second liquid crystal cell when viewed from a predetermined direction.
Dependencies are inferred from the claim text.