Method for manufacturing oxide thin film transistor and method for manufacturing display device
First Claim
1. A method for manufacturing an oxide semiconductor active layer to reduce leakage currents to less than 10 −
- 14 A, increase electron mobility to 2 cm2/V sec and stabilize temperature stability thereof, comprising;
forming the oxide semiconductor active layer with a thickness in a range from 660 angstroms to 2000 angstroms by a deposition process, and in the deposition process, a total flow rate of a gas being more than 100 standard cubic centimeters per minute and an electric power being in a range from 1.5 kilowatts to 10 kilowatts, the gas in the deposition process comprises an oxygen with a flow ratio to the total gas in a range from 4% to 20%.
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Abstract
A method for manufacturing an oxide thin film transistor includes the steps of forming an oxide semiconductor active layer by a deposition process. In the deposition process, a total flow rate of a gas is more than 100 standard cubic centimeters per minute and an electric power is in a range from 1.5 kilowatts to 10 kilowatts. The oxide thin film transistor manufactured by the above methods has advantages of low leakage currents, high electron mobility, and excellent temperature stability. The present invention also provides a method for manufacturing a display device. The display quality of the display device can be improved.
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Citations
14 Claims
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1. A method for manufacturing an oxide semiconductor active layer to reduce leakage currents to less than 10 −
- 14 A, increase electron mobility to 2 cm2/V sec and stabilize temperature stability thereof, comprising;
forming the oxide semiconductor active layer with a thickness in a range from 660 angstroms to 2000 angstroms by a deposition process, and in the deposition process, a total flow rate of a gas being more than 100 standard cubic centimeters per minute and an electric power being in a range from 1.5 kilowatts to 10 kilowatts, the gas in the deposition process comprises an oxygen with a flow ratio to the total gas in a range from 4% to 20%. - View Dependent Claims (2, 3, 4)
- 14 A, increase electron mobility to 2 cm2/V sec and stabilize temperature stability thereof, comprising;
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5. A method for manufacturing a display device, comprising:
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providing a substrate; forming an oxide thin film transistor array for reducing leakage currents to less than 10 −
14 A, increasing electron mobility to 2 cm2/V sec and stabilizing temperature stability thereof on the substrate including the steps of;forming an oxide semiconductor active layer with a thickness in a range from 660 angstroms to 2000 angstroms by a deposition process, and in the deposition process, a total flow rate of a gas being more than 100 standard cubic centimeters per minute and an electric power being in a range from 1.5 kilowatts to 10 kilowatts, the gas in the deposition process comprises an oxygen with a flow ratio to the total gas in a range from 4% to 20%; and disposing a display layer on the oxide thin film transistor array. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification