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US 6,323,142 B1Granted
APCVD method of forming silicon oxide using an organic silane, oxidizing agent, and catalyst-formed hydrogen radical
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsShunpei Yamazaki, Mitsunori Sakama, Takeshi Fukada
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Abstract
In forming various types of insulating films in manufacture of a semiconductor device, carbon is gasified into CHx, COH etc. during film formation by adding active hydrogen and nitrogen oxide to reduce the carbon content during the film formation, and the effect of blocking impurities such as alkali metals is improved.
Claims15
A manufacturing method of a semiconductor device comprising the steps of:
- placing a substrate in a reaction chamber;
- passing H2 through a heated catalyst to form a hydrogen radical;
- introducing an organic silane type source gas and an oxidizing gas and said hydrogen radical into said reaction chamber at a flow rate ratio of organic silane type source gas:
- oxidizing gas:hydrogen radical=1:5-20:0.01-1 in terms of SCCM;
- and
- forming an oxide film over said substrate by atmospheric pressure CVD by using said organic silane type source gas and said oxidizing gas and said hydrogen radical.
3 more elements
A manufacturing method of a semiconductor device comprising the steps of:
- placing a substrate in a reaction chamber;
- passing H2 through a heated catalyst to form a hydrogen radical;
- introducing an organic silane type source gas and oxidizing gas and said hydrogen radical into said reaction chamber at a flow rate ratio of organic silane type source gas:oxidizing gas:hydrogen radical=1:5-20:0.01-1 in terms of SCCM;
- forming an undercoat oxide film over said substrate by atmospheric pressure CVD by using said organic silane type source gas and said oxidizing gas and said hydrogen radical;
- and
- forming a semiconductor layer to become an active layer of a thin film transistor over said undercoat oxide.
3 more elements
A manufacturing method of a semiconductor device comprising the steps of:
- forming a semiconductor layer to become an active layer of a thin film transistor over a substrate;
- placing said semiconductor layer formed over said substrate in a reaction chamber;
- passing H2 through a heated catalyst to form a hydrogen radical;
- introducing an organic silane type source gas and an oxidizing gas and hydrogen radical into said reaction chamber at a flow rate ratio of organic silane type source gas:oxidizing gas:hydrogen radical=1:5-20:0.01-1 in terms of SCCM;
- and
- forming an oxide film as an interlayer insulating film over said semiconductor layer by atmospheric pressure CVD by using said organic silane type source gas and said oxidizing gas and said hydrogen radical.
3 more elements
Dependencies are inferred from the claim text.