Liquid crystal display device and method for manufacturing the same
First Claim
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1. A liquid crystal display device comprising a pixel over a substrate, the pixel comprising:
- a thin film transistor comprising;
an oxide semiconductor layer; and
a source electrode and a drain electrode which are electrically connected to the oxide semiconductor layer; and
a liquid crystal element comprising;
a pixel electrode electrically connected to one of the source electrode and the drain electrode; and
a liquid crystal material over the pixel electrode,wherein the pixel electrode is in direct contact with a side surface of the oxide semiconductor layer in the pixel.
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Abstract
Provided is a method to manufacture a liquid crystal display device in which a contact hole for the electrical connection of the pixel electrode and one of the source and drain electrode of a transistor and a contact hole for the processing of a semiconductor layer are formed simultaneously. The method contributes to the reduction of a photography step. The transistor includes an oxide semiconductor layer where a channel formation region is formed.
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Citations
16 Claims
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1. A liquid crystal display device comprising a pixel over a substrate, the pixel comprising:
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a thin film transistor comprising; an oxide semiconductor layer; and a source electrode and a drain electrode which are electrically connected to the oxide semiconductor layer; and a liquid crystal element comprising; a pixel electrode electrically connected to one of the source electrode and the drain electrode; and a liquid crystal material over the pixel electrode, wherein the pixel electrode is in direct contact with a side surface of the oxide semiconductor layer in the pixel. - View Dependent Claims (2, 3, 4, 5, 13, 15)
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6. A liquid crystal display device comprising a pixel over a substrate, the pixel comprising:
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a thin film transistor comprising; an oxide semiconductor layer; and a source electrode and a drain electrode which are electrically connected to the oxide semiconductor layer; a liquid crystal element comprising; a pixel electrode electrically connected to one of the source electrode and the drain electrode; and a liquid crystal material over the pixel electrode; and a capacitor comprising; a capacitor wiring; and a dielectric layer over the capacitor wiring, wherein the pixel electrode extends over the dielectric layer so that the pixel electrode overlaps with the capacitor wiring with the dielectric layer interposed therebetween, and wherein the pixel electrode is in direct contact with a side surface of the oxide semiconductor layer in the pixel. - View Dependent Claims (7, 8, 9, 10, 11, 12, 14, 16)
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Specification