Liquid crystal display
AssigneesHitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
InventorsTetsufumi Kawamura, Takeshi Sato, Mutsuko Hatano, Mieko Matsumura
Life of this patent
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Abstract
A liquid crystal display, having an improved application of electric field to the molecules of liquid crystal, includes a substrate and a pixel array bonded to the surface of this substrate, and the pixel array includes at least a thin-film transistor and a pixel electrode connected with this thin-film transistor, and the pixel electrode is formed in a layer higher than the thin-film transistor in relation to the substrate.
Claims13
A liquid crystal display, comprising:
- a substrate, an insulation layer, and a pixel array adhered on the substrate;
- the pixel array including at least a thin film transistor and a pixel electrode connected with the thin film transistor;
- the pixel electrode formed in a layer above the thin film transistor in relation to the substrate, wherein the substrate and the thin film transistor are separated by at least the insulation layer;
- and
- a metal layer comprising a first portion and a second portion, the metal layer being formed on a surface of the insulation layer facing the substrate, wherein the first portion is connected to the conductor region of the semiconductor layer of the thin film transistor by a first via hole through the insulation layer and the second portion of the metal layer is connected to the conductor region of the semiconductor layer of the thin film transistor by a second via hole through the insulation layer.
A liquid crystal display, comprising:
- a substrate and a pixel array adhered on the substrate, the pixel array including at least a thin film transistor and a pixel electrode connected with the thin film transistor, the pixel electrode being formed in a layer above the thin film transistor in relation to the substrate, the substrate and the thin film transistor being separated by at least an insulation layer;
- a metal layer disposed overlapping a conductor region of a semiconductor layer of the thin film transistor, the metal layer being connected to the conductor region of the semiconductor layer of the thin film transistor through a via hole through the insulation layer, the metal layer being formed on the surface on the subjstrate side of the insulation layer;
- and
- a tabular-shaped second electrode made of a transparent conductive film formed in a layer below the insulation film and a comb teeth-like first electrode overlapping the tabular-shaped second electrode formed in the upper layer above the insulation film, and wherein the pixel electrode is the first electrode.
A liquid crystal display, comprising:
- a substrate;
- a pixel array adhered on the substrate, the pixel array comprising at least a thin film transistor;
- a drain signal line;
- a connection layer;
- a pixel electrode connected to the thin film transistor;
- and
- an insulation layer,
- wherein:
- the thin film transistor is separated from the drain signal line and the connection layer by a respective portion of the insulation layer,
- the drain signal line is connected to the thin film transistor by a first via hole passing through the insulation layer and the connection layer is connected to the thin film transistor by a second via hole passing through the insulation,
- the substrate and the thin film transistor are separated by at least the insulation layer,
- the drain signal line and the connection layer each cover respective portions of the thin film transistor such that the drain signal line and the connection layer, respectively, are disposed between the substrate and the thin film transistor to block at least a portion of light emitted from the substrate,
- the drain signal line overlaps a first conductor region of a semiconductor layer of the thin film transistor in relation to the substrate, and
- the connection layer overlaps a second conductor region of a semiconductor layer of the thin film transistor in relation to the substrate.
Dependencies are inferred from the claim text.