JP2020077806A - 気相成長装置 - Google Patents
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
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Abstract
Description
第1の実施形態の気相成長装置は、n(nは2以上の整数)個の反応室と、n個の反応室に第1のガスと第2のガスとの混合ガスを供給する主ガス供給路と、主ガス供給路から分岐されn個の反応室のそれぞれに接続されたn本の副ガス供給路と、主ガス供給路の中の圧力を測定する第1の圧力計と、n本の副ガス供給路のそれぞれに設けられたn個のマスフローコントローラと、第1の圧力計の測定結果に基づき、n個のマスフローコントーラの内の一つである第1のマスフローコントローラに流量値を指令する第1の制御回路と、n個のマスフローコントローラの流量値の総和のn分の1の流量値を算出し、n個のマスフローコントローラの内の第1のマスフローコントローラ以外のマスフローコントローラにn分の1の流量値を指令する第2の制御回路と、を備える。
第2の実施形態の気相成長装置は、n(nは2以上の整数)個の反応室と、n個の反応室にガスを供給する主ガス供給路と、主ガス供給路から分岐されn個の反応室のそれぞれに接続されたn本の副ガス供給路と、主ガス供給路の中の圧力を測定する第1の圧力計と、n本の副ガス供給路のそれぞれに設けられたn個のマスフローコントローラと、第1の圧力計の測定結果に基づき、n個のマスフローコントーラの内の一つである第1のマスフローコントローラに流量値を指令する第1の制御回路と、n個のマスフローコントローラの流量値の総和のn分の1の流量値を算出し、n個のマスフローコントローラの内の第1のマスフローコントローラ以外のマスフローコントローラにn分の1の流量値を指令する第2の制御回路と、を備える。
第3の実施形態の気相成長装置は、異なる種類のプロセスガスが、各反応室内あるいは反応室の直前で混合される点、及び、異なる種類のプロセスガス毎に分流機構を備える点
で、第1の実施形態の気相成長装置と異なる。具体的には、第1の主プロセスガス、第2の主プロセスガス、及び第3の主プロセスガスの各々を分流してn個の反応炉へ供給し、各プロセスガスは各反応炉内あるいは反応炉の直前で混合される。以下、第1の実施形態と重複する内容については一部記述を省略する。
11 第1のガス供給路
12 第1の主マスフローコントローラ
13 主ガス供給路、第1の主ガス供給路
14a 第1の副ガス供給路
14b 第2の副ガス供給路
14c 第3の副ガス供給路
14d 第4の副ガス供給路
15a 第1の副マスフローコントローラ(第1のマスフローコントローラ)
15b 第2の副マスフローコントローラ
15c 第3の副マスフローコントローラ
15d 第4の副マスフローコントローラ
16a 第1の副ガス排出路
16b 第2の副ガス排出路
16c 第3の副ガス排出路
16d 第4の副ガス排出路
17 主ガス排出路
18 排気ポンプ
21 第2のガス供給路
22 第2の主マスフローコントローラ
31 第3のガス供給路
32 第3の主マスフローコントローラ
41 第1の圧力計
42 第2の圧力計
45 圧力調整バルブ
51 第1の制御回路
52 第2の制御回路
53 第3の制御回路
211 第4のガス供給路
212 第4の主マスフローコントローラ
213 第2の主ガス供給路
214a 第5の副ガス供給路
214b 第6の副ガス供給路
214c 第7の副ガス供給路
214d 第8の副ガス供給路
215a 第5の副マスフローコントローラ
215b 第6の副マスフローコントローラ
215c 第7の副マスフローコントローラ
215d 第8の副マスフローコントローラ
221 第5のガス供給路
222 第5の主マスフローコントローラ
231 第6のガス供給路
232 第6の主マスフローコントローラ
241 第3の圧力計
251 第4の制御回路
252 第5の制御回路
311 第7のガス供給路
321 第8のガス供給路
312 第7の主マスフローコントローラ
313 第3の主ガス供給路
314a 第9の副ガス供給路
314b 第10の副ガス供給路
314c 第11の副ガス供給路
314d 第12の副ガス供給路
315a 第9の副マスフローコントローラ
315b 第10の副マスフローコントローラ
315c 第11の副マスフローコントローラ
315d 第12の副マスフローコントローラ
322 第8の主マスフローコントローラ
341 第4の圧力計
351 第6の制御回路
352 第7の制御回路
Claims (5)
- n(nは2以上の整数)個の反応室と、
前記n個の反応室に第1のガスと第2のガスとの混合ガスを供給する主ガス供給路と、
前記主ガス供給路から分岐され前記n個の反応室のそれぞれに接続されたn本の副ガス供給路と、
前記主ガス供給路の中の圧力を測定する第1の圧力計と、
前記n本の副ガス供給路のそれぞれに設けられたn個のマスフローコントローラと、
前記第1の圧力計の測定結果に基づき、前記n個のマスフローコントーラの内の一つである第1のマスフローコントローラに流量値を指令する第1の制御回路と、
前記n個のマスフローコントローラの流量値の総和のn分の1の流量値を算出し、前記n個のマスフローコントローラの内の前記第1のマスフローコントローラ以外のマスフローコントローラに前記n分の1の流量値を指令する第2の制御回路と、
を備える気相成長装置。 - 前記n個の反応室のそれぞれに接続されたn本の副ガス排出路と、
前記n本の副ガス排出路に接続された主ガス排出路と、
前記主ガス排出路に接続された排気ポンプと、
前記主ガス排出路の中の圧力を測定する第2の圧力計と、
前記排気ポンプと前記第2の圧力計との間に設けられた圧力調整バルブと、
前記第2の圧力計の測定結果に基づき、前記圧力調整バルブに指令し、前記主ガス排出路の中の圧力を制御する第3の制御回路と、
を更に備える請求項1記載の気相成長装置。 - 前記主ガス供給路に前記第1のガスを供給する第1のガス供給路と、
前記主ガス供給路に前記第2のガスを供給する第2のガス供給路と、
を更に備える請求項1又は請求項2記載の気相成長装置。 - 前記第1の制御回路は、前記主ガス供給路の中の圧力が所定の値となるように前記第1のマスフローコントローラに流量値を指令する請求項1ないし請求項3いずれか一項記載の気相成長装置。
- n(nは2以上の整数)個の反応室と、
前記n個の反応室にガスを供給する主ガス供給路と、
前記主ガス供給路から分岐され前記n個の反応室のそれぞれに接続されたn本の副ガス供給路と、
前記主ガス供給路の中の圧力を測定する第1の圧力計と、
前記n本の副ガス供給路のそれぞれに設けられたn個のマスフローコントローラと、
前記第1の圧力計の測定結果に基づき、前記n個のマスフローコントーラの内の一つである第1のマスフローコントローラに流量値を指令する第1の制御回路と、
前記n個のマスフローコントローラの流量値の総和のn分の1の流量値を算出し、前記n個のマスフローコントローラの内の前記第1のマスフローコントローラ以外のマスフローコントローラに前記n分の1の流量値を指令する第2の制御回路と、
を備える気相成長装置。
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US16/671,618 US11149358B2 (en) | 2018-11-09 | 2019-11-01 | Vapor phase growth apparatus comprising n reactors, a primary gas supply path, a main secondary gas supply path, (n−1) auxiliary secondary gas supply paths, a first control circuit, and a second control circuit |
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