THIN FILM TRANSISTOR AND MANUFACTURING METHOD THEREOF
First Claim
1. A thin film transistor, comprising:
- a gate disposed on a substrate;
an oxide channel layer disposed on the substrate and stacked with the gate in a top and bottom manner, wherein a material of the oxide channel layer comprises a metal element and the metal element content has a gradient distribution in a thickness direction of the oxide channel layer;
a gate insulation layer disposed between the gate and the oxide channel layer;
a source;
a drain configured parallel to the source and the source and the drain being connected to the oxide channel layer; and
a dielectric layer covering the source and the drain at a side away from the substrate.
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Abstract
A thin film transistor and a manufacturing method thereof are provided. The thin film transistor includes a gate, an oxide channel layer, a gate insulating layer, a source, a drain and a dielectric layer. The gate is disposed on a substrate. The oxide channel layer, disposed on the substrate, is stacked with the gate. A material of the oxide channel layer includes a metal element. The metal element content shows a gradient distribution along a thickness direction of the oxide channel layer. The gate insulation layer is disposed between the gate and the oxide channel layer. The source and the drain are disposed in parallel to each other, and connected to the oxide channel layer. Sides of the source and the drain, facing away from the substrate, are covered by the dielectric layer.
31 Citations
12 Claims
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1. A thin film transistor, comprising:
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a gate disposed on a substrate; an oxide channel layer disposed on the substrate and stacked with the gate in a top and bottom manner, wherein a material of the oxide channel layer comprises a metal element and the metal element content has a gradient distribution in a thickness direction of the oxide channel layer; a gate insulation layer disposed between the gate and the oxide channel layer; a source; a drain configured parallel to the source and the source and the drain being connected to the oxide channel layer; and a dielectric layer covering the source and the drain at a side away from the substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A manufacturing method of a thin film transistor (TFT), comprising:
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forming a gate on a substrate; forming at least one first semiconductor oxide layer and at least one second semiconductor oxide layer on the substrate, wherein the at least one first semiconductor oxide layer and the at least one second semiconductor oxide layer are alternately arranged to form an oxide channel layer, the oxide channel layer is disposed on the substrate and stacked with the gate in a top and bottom manner, a material of the oxide channel layer comprises a metal element, and the metal element content has a gradient distribution in a thickness direction of the oxide channel layer; forming a gate insulation layer between the gate and the oxide channel layer; forming a source and a drain, wherein the source and the drain are configured parallel to each other and connected to the oxide channel layer; and forming a dielectric layer covering the source and the drain at a side away from the substrate. - View Dependent Claims (10, 11, 12)
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Specification