Patent ID: 11879171
Assignee: DENSO CORPORATION
Field: Surface technology, coating (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A semiconductor manufacturing device comprising:
a thin film formation portion that includes
an installation table on which a substrate is installed, and
a single chamber configured to heat the substrate and introduce a supply gas containing a raw material for growing a thin film on the substrate; and

a supply gas unit configured to introduce the supply gas into the single chamber via an introduction pipe,
wherein:
the supply gas unit includes a plurality of supply gas units provided for each type of the raw material for growing the thin film;
each supply gas unit includes:
a plurality of supply pipes configured to supply a plurality of gases from a gas introduction source configured to store a plurality of gases containing the raw material;
each raw material flow rate controller that
is installed on each of the plurality of supply pipes, and
is configured to control a flow rate of the supply gas through each of the plurality of supply pipes;

a collective pipe that
is connected to the plurality of supply pipes on a downstream side with respect to the raw material flow rate controller, and
is configured to generate a mixed gas of the supply gas;

a plurality of distribution pipes that
are connected to a downstream side of the collective pipe, and
are configured to distribute the mixed gas;

a pressure controller that
is installed on one of the plurality of distribution pipes, and
is configured to adjust a mixed gas pressure that is a pressure of the mixed gas; and

a distribution flow rate controller that
is installed on a distribution pipe different from the distribution pipe provided with the pressure controller among the plurality of distribution pipes, and
is configured to control a flow rate of the mixed gas through the plurality of distribution pipes;

some of the plurality of supply pipes supply a carrier gas that becomes a part of the supply gas to the collective pipe;
the raw material flow rate controller includes:
a first flow rate controller for controlling a large flow rate for a supply of the raw material via one of the plurality of supply pipes with the raw material flow rate controller;
a second flow rate controller for controlling a small flow rate for the supply of the raw material via another supply pipe; and
a third flow rate controller for controlling a flow rate of the carrier gas supplied via the one supply pipe and the another supply pipe;

the plurality of distribution pipes are connected to the introduction pipe on a downstream side with respect to the pressure controller and the distribution flow rate controller; and
the mixed gas through, at least, a distribution pipe provided with the distribution flow rate controller is introduced into a single processing area of the single chamber, the distribution pipe with the pressure controller, and the introduction pipe, and the thin film formation portion grows the thin film.