Semiconductor thin film manufacturing method, electronic device, and liquid crystal display device
First Claim
1. A method of manufacturing a semiconductor thin film, the method comprising:
- forming a first foundation layer on a substrate;
making recesses in and raised parts on the first foundation layer;
forming a second foundation layer on the first foundation layer, the second foundation layer extending over the recesses and raised parts of the first foundation layer, having heat conductivity which is different from thermal conductivity of the first foundation layer, and having a flat surface;
forming a semiconductor thin film on the second foundation layer; and
illuminating energy beams onto the semiconductor thin film, and crystallizing the semiconductor thin film using the recesses and the raised parts of the first foundation layer and a part of the second foundation layer as crystal producing nucleuses.
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Accused Products
Abstract
A semiconductor thin film is manufactured by forming a first foundation layer on a substrate; making recesses in and raised parts on the first foundation layer; forming a second foundation layer on the first foundation layer, the second foundation layer extending over the recesses and raised parts of the first foundation layer, having heat conductivity which is different from heat conductivity of the first foundation layer, and having a flat surface; forming a semiconductor thin film on the second foundation layer; and illuminating energy beams onto the semiconductor thin film, and crystallizing the semiconductor thin film using the recesses and the raised parts of the first foundation layer and a part of the second foundation layer as crystal producing nucleuses.
37 Citations
20 Claims
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1. A method of manufacturing a semiconductor thin film, the method comprising:
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forming a first foundation layer on a substrate;
making recesses in and raised parts on the first foundation layer;
forming a second foundation layer on the first foundation layer, the second foundation layer extending over the recesses and raised parts of the first foundation layer, having heat conductivity which is different from thermal conductivity of the first foundation layer, and having a flat surface;
forming a semiconductor thin film on the second foundation layer; and
illuminating energy beams onto the semiconductor thin film, and crystallizing the semiconductor thin film using the recesses and the raised parts of the first foundation layer and a part of the second foundation layer as crystal producing nucleuses. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An electronic device comprising:
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a substrate;
a foundation formed on the substrate and having a plurality of crystal producing nucleuses arranged in the shape of a matrix; and
transistors using semiconductor thin films as operation regions, the semiconductor thin films being crystalline and provided at the crystal producing nucleuses on the foundation. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A liquid crystal display device comprising:
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a transparent substrate;
a foundation formed on the transparent substrate and having a plurality of crystal producing nucleuses arranged in the shape of a matrix; and
transistors using semiconductor thin films as channel forming regions, the semiconductor thin films being crystalline and provided at the crystal producing nucleuses on the foundation layer. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification