Liquid crystal display device
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsTakeshi Nishi, Tetsuji Ishitani, Daisuke Kubota
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Abstract
In the present invention, it is an object to improve display quality by improving response speed of a liquid crystal element in a liquid crystal display device, in particular, response speed in the case of falling. In the present invention, it is characterized that a liquid crystal layer is divided into plural regions (domains) substantially by mixing a chemical compound including a liquid crystal skeleton in a liquid crystal layer having existing liquid crystal molecules as a technique to improve response speed of a liquid crystal element in a liquid crystal display device for solving the above problem.
Claims33
A liquid crystal display device comprising:
- a first substrate and a second substrate, which are opposed to each other;
- a first electrode and a second electrode, which are over the first substrate;
- a projection and a spacer between the first substrate and the second substrate;
- and
- a liquid crystal layer between the first electrode and the second substrate,
- wherein a distance between a first end of the projection and the second substrate is smaller than a distance between the first end of the projection and the first substrate,
- wherein a distance between a second end of the projection and the first substrate is smaller than a distance between the second end of the projection and the second substrate,
- wherein the liquid crystal layer includes a liquid crystal molecule and a compound having a liquid crystal skeleton, and
- wherein the liquid crystal layer includes a plurality of domain regions.
A liquid crystal display device comprising:
- a first substrate and a second substrate, which are opposed to each other;
- a first electrode and a second electrode, which are over the first substrate;
- a projection and a spacer between the first substrate and the second substrate;
- and
- a liquid crystal layer between the first electrode and the second substrate,
- wherein a distance between a first end of the projection and the second substrate is smaller than a distance between the first end of the projection and the first substrate,
- wherein a distance between a second end of the projection and the first substrate is smaller than a distance between the second end of the projection and the second substrate,
- wherein the liquid crystal layer includes a liquid crystal molecule and a compound having a liquid crystal skeleton,
- wherein the liquid crystal layer includes a plurality of domain regions, and
- wherein a part of the liquid crystal layer is provided between the projection and the second substrate.
A liquid crystal display device comprising:
- a first substrate and a second substrate, which are opposed to each other;
- a first electrode and a second electrode, which are over the first substrate;
- a projection and a spacer between the first substrate and the second substrate;
- a liquid crystal layer between the first electrode and the second substrate;
- and
- an active element electrically connected to the first electrode, substrate,
- wherein a distance between a first end of the projection and the second substrate is smaller than a distance between the first end of the projection and the first substrate,
- wherein a distance between a second end of the projection and the first substrate is smaller than a distance between the second end of the projection and the second substrate,
- wherein the liquid crystal layer includes a liquid crystal molecule and a compound having a liquid crystal skeleton, and
- wherein the liquid crystal layer includes a plurality of domain regions.
Dependencies are inferred from the claim text.