Active matrix substrate and switching element
First Claim
1. An active matrix substrate comprising:
- an insulation substrate;
a plurality of pixel electrodes arranged in a matrix form on the insulation substrate;
a switching element provided for each of the pixel electrodes;
gate signal lines for supplying to the switching elements a signal for controlling an electrically conducting state and a non-conducting state of the switching elements; and
source signal lines for supplying a data signal to the pixel electrodes via the corresponding switching elements;
wherein each switching element is a thin film transistor (TFT) including;
a gate electrode formed on the insulation substrate;
an insulating layer formed on the insulation substrate so as to cover the gate electrode;
a semiconductor layer formed on the insulating layer in a portion opposite to one of the gate electrodes, the semiconductor layer including a channel region;
a source electrode formed on one end of the semiconductor layer, one of the source signal lines overlapping the source electrode; and
a drain electrode formed on the other end of the semiconductor layer, one of the pixel electrodes overlapping the drain electrode,and wherein the source and drain electrodes have a two-layer structure of an upper amorphous semiconductor layer and a lower micro-crystalline semiconductor layer.
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Accused Products
Abstract
An active matrix substrate comprises an insulation substrate, a plurality of pixel electrodes arranged in a matrix form on the insulation substrate, a switching element provided for each of the pixel electrodes, gate signal lines for supplying a signal to the switching elements, and source signal lines for supplying a data signal to the pixel electrodes via the corresponding switching elements. Each switching element is a thin film transistor (TFT) including a gate electrode, an insulating layer formed on the insulation substrate to cover the gate electrode, a semiconductor layer formed on the insulating layer opposite to the gate electrode, a source electrode formed on one end of the semiconductor layer, one of the source signal lines overlapping the source electrode, and a drain electrode formed on the other end of the semiconductor layer, one of the gate signal lines overlapping the drain electrode. The source and drain electrodes have a two-layer structure of an upper amorphous semiconductor layer and a lower micro-crystalline semiconductor layer. The source signal lines have a two-layer structure of an upper conductive layer and a lower protection layer.
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Citations
20 Claims
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1. An active matrix substrate comprising:
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an insulation substrate; a plurality of pixel electrodes arranged in a matrix form on the insulation substrate; a switching element provided for each of the pixel electrodes; gate signal lines for supplying to the switching elements a signal for controlling an electrically conducting state and a non-conducting state of the switching elements; and source signal lines for supplying a data signal to the pixel electrodes via the corresponding switching elements; wherein each switching element is a thin film transistor (TFT) including; a gate electrode formed on the insulation substrate; an insulating layer formed on the insulation substrate so as to cover the gate electrode; a semiconductor layer formed on the insulating layer in a portion opposite to one of the gate electrodes, the semiconductor layer including a channel region; a source electrode formed on one end of the semiconductor layer, one of the source signal lines overlapping the source electrode; and a drain electrode formed on the other end of the semiconductor layer, one of the pixel electrodes overlapping the drain electrode, and wherein the source and drain electrodes have a two-layer structure of an upper amorphous semiconductor layer and a lower micro-crystalline semiconductor layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A thin film transistor (TFT) used as a switching element for an active matrix substrate, comprising:
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a gate electrode formed on an insulation substrate; an insulating layer formed on the gate electrode; a semiconductor layer formed on the insulating layer including a channel region; a source electrode formed on one end of the semiconductor layer, a first conductive layer overlapping the source electrode; and a drain electrode formed on the other end of the semiconductor layer, a second conductive layer overlapping the drain electrode, wherein the source and drain electrodes have a two-layer structure of an upper amorphous semiconductor layer and a lower micro-crystalline semiconductor layer. - View Dependent Claims (20)
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Specification