Patent ID: 11862490
Assignee: CHANGXIN MEMORY TECHNOLOGIES, INC.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC H  F | IPC F  H

Claim 13:
14. The diffusion furnace of claim 1, wherein the gas intake structure comprises a gas intake tube, which is disposed close to the bottom of the furnace tube body;
the gas path system further comprises vertical tubes communicated with the gas intake tube, and the vertical tube is provided with a plurality of blowholes distributed at intervals along a vertical direction of the vertical tube, so that the reactive gas in the vertical tube can be blown to the gaps between the wafers spaced in the vertical direction;
the exhaust structure comprises an exhaust passage and an exhaust port, with the exhaust passage arranged vertically, a top end of the exhaust passage communicated with the reaction chamber and a bottom end of the exhaust passage communicated with the exhaust port;
the exhaust port is higher than the gas intake tube, and the exhaust passage is higher than the cassettes.