Apparatus and method for low pressure chemical vapor deposition using multiple chambers and vacuum pumps
First Claim
1. An apparatus for low pressure chemical vapor deposition for fabricating a semiconductor device, said apparatus comprising:
- a first group of reaction chambers connected to a wafer transfer chamber;
a second group of high-vacuum pumps connected to said reaction chambers;
a third group of gate valves connected to said high-vacuum pumps; and
a low-vacuum pump connected to said gate valves,wherein said third group has fewer members than said second group.
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Abstract
An apparatus for low pressure chemical vapor deposition for fabricating a semiconductor device comprises a group of reaction chambers, a group of high-vacuum pumps connected to the reaction chambers, a group of gate valves connected to the high-vacuum pumps, and a low-vacuum pump connected to the gate valves. There are fewer gate valves than high-vacuum pumps. A method for fabricating a semiconductor device using the above apparatus includes the sequence and duration of opening gate valves, injecting reaction gases, and pumping with the low vacuum pump. According to the present invention, since the number of pumps is reduced, the cost for installation, operation and maintenance of the semiconductor device fabrication apparatus is reduced.
431 Citations
15 Claims
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1. An apparatus for low pressure chemical vapor deposition for fabricating a semiconductor device, said apparatus comprising:
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a first group of reaction chambers connected to a wafer transfer chamber; a second group of high-vacuum pumps connected to said reaction chambers; a third group of gate valves connected to said high-vacuum pumps; and a low-vacuum pump connected to said gate valves, wherein said third group has fewer members than said second group. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus for low pressure chemical vapor deposition for fabricating a semiconductor device, said apparatus comprising:
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a first group of reaction chambers connected to a wafer transfer chamber; a second group of high-vacuum pumps connected to said reaction chambers; and a low-vacuum pump in direct communication with said high-vacuum pumps. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification