Patent ID: 9478440
Filing Date: 2016-10-25
CPC Classification: C23C,H01L

Claim Text:
1. A low-pressure chemical vapor deposition apparatus, including a reaction furnace designed as a horizontal structure, wherein the reaction furnace comprises a furnace opening part side, a furnace body part side and a furnace tail part side, and wherein the furnace body part side is a part between the furnace opening part side and the furnace tail part side and is used for depositing multiple polysilicon wafers which are placed vertically in the reaction furnace, and a port is arranged at the furnace tail part side to connect a vacuum pump to vacuum the reaction furnace, wherein the reaction gas input pipelines are arranged at both end sides of the horizontal structure of the reaction furnace which are the furnace opening part side and the furnace tail part side such that during a thin film deposition, the reaction gas can be input through the reaction gas input pipelines at the same time, and wherein the reaction gas input pipelines at the furnace opening part side and the reaction gas input pipelines at the furnace tail part side are arranged toward the wafers from directly opposite directions, and further wherein, said apparatus is configured for the thin film deposition directly on said polysilicon wafers and further wherein, when said apparatus is used for the thin film deposition: