KR950009925A - Contact Hole Formation Method of Semiconductor Device with Reduced Step Ratio - Google Patents

Contact Hole Formation Method of Semiconductor Device with Reduced Step Ratio Download PDF

Info

Publication number
KR950009925A
KR950009925A KR1019930018526A KR930018526A KR950009925A KR 950009925 A KR950009925 A KR 950009925A KR 1019930018526 A KR1019930018526 A KR 1019930018526A KR 930018526 A KR930018526 A KR 930018526A KR 950009925 A KR950009925 A KR 950009925A
Authority
KR
South Korea
Prior art keywords
oxide film
device isolation
forming
isolation oxide
contact hole
Prior art date
Application number
KR1019930018526A
Other languages
Korean (ko)
Other versions
KR960016230B1 (en
Inventor
이경복
Original Assignee
김주용
현대전자산업 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 김주용, 현대전자산업 주식회사 filed Critical 김주용
Priority to KR1019930018526A priority Critical patent/KR960016230B1/en
Publication of KR950009925A publication Critical patent/KR950009925A/en
Application granted granted Critical
Publication of KR960016230B1 publication Critical patent/KR960016230B1/en

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/70Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
    • H01L21/71Manufacture of specific parts of devices defined in group H01L21/70
    • H01L21/768Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
    • H01L21/76801Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing
    • H01L21/76802Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing by forming openings in dielectrics

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
  • Insulated Gate Type Field-Effect Transistor (AREA)

Abstract

본 발명은 단차비가 감소된 반도체 소자의 콘택홀 형성방법에 관하여 기술한 것으로, 반도체 웨이퍼상에 소자간을 분리하기 위하여 형성하는 소자분리 산화막 또는 트랜지스터의 게이트 전극등의 상부면이 실리콘 기판의 표면과 비슷한 높이로 형성되도록 하여 후공정의 콘택홀의 단차비가 감소되도록 하는 반도체 소자의 콘택홀 형성방법에 관하여 기술된다.The present invention relates to a method for forming a contact hole in a semiconductor device having a reduced step ratio. A method for forming a contact hole in a semiconductor device, which is formed to have a similar height, so that the step ratio of the contact hole in a later process is reduced.

Description

단차비가 감소된 반도체 소자의 콘택홀 형성방법Contact Hole Formation Method of Semiconductor Device with Reduced Step Ratio

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제2a도 내지 제2f도는 본 발명에 의한 단차비가 감소된 콘택홀 형성하는 단계를 도시한 단면도.2A to 2F are cross-sectional views illustrating a step of forming a contact hole having a reduced step ratio according to the present invention.

Claims (3)

반도체 소자의 콘택홀 형성방법에 있어서, 실리콘 기판(11)상에 제1질화막(19a)을 증착한 후, 마스크 공정 및 식각공정으로 소자분리 산화막이 형성될 부분과 게이트 전극이 형성될 부분이 제1질화막(19a)을 식각하는 단계와, 상기 단계로부터 열적으로 산화공정을 실시하여 소자분리영역에 제1소자분리 산화막(12a)을, 게이트 전극이 형성될 부분에 산화막(20)을 동시에 형성하는 단계와, 상기 단계로부터 형성된 제1소자분리 산화막(12a) 및 산화막(20)을 제거한 후, 전체구조상부에 제2질화막(19b)을 증착한 다음, 마스크 공정 및 식각공정으로 상기 제1소자분리 산화막(12a)이 제거된 부분에 증착된 제2질화막(19b)을 식각하는 단계와, 상기 단계로부터 다시 열적으로 산화공정을 실시하여 상기 제1소자분리 산화막(12a)이 제거된 부분에 실리콘 기판(11)의 표면 높이가 되도록 제2소자분리 산화막(12b)을 형성한 후, 상기 식각되고 남은 제2질화막(19b)을 제거한 다음, 전체적으로 실리콘 기판(11)상에 게이트 산화막(13)을 형성하는 단계와, 상기 단계로부터 전체구조상부에 폴리실리콘을 증착한 다음, 게이트 전극 마스크를 사용하여 상기 산화막(20)이 제거되어 실리콘 기판(11) 표면이 함몰된 부분에 게이트 전극(14)을 형성한 후, 불순물주입공정으로 소오스/드레인 전극(16)을 형성하는 단계와, 상기 단계로부터 전체구조 상부에 층간 절연막(17)을 두껍게 증착 평탄화한후, 콘택 마스크를 사용하여 콘택홀(18)을 형성하는 단계로 이루어져, 콘택홀의 단차비에 직접적인 영향을 미치는 소자분리 산화막 및 게이트 전극을 실리콘 기판의 표면 높이가 되도록 형성하여 콘택홀의 단차비를 감소시키는 것을 특징으로 하는 소자의 콘택홀 형성방법.In the method for forming a contact hole of a semiconductor device, after depositing the first nitride film 19a on the silicon substrate 11, the portion where the device isolation oxide film is to be formed and the portion where the gate electrode is to be formed are formed by a mask process and an etching process. Etching the first nitride film 19a, and thermally oxidizing the same to form the first device isolation oxide film 12a in the device isolation region and the oxide film 20 in the portion where the gate electrode is to be formed. And removing the first device isolation oxide film 12a and the oxide film 20 formed from the step, depositing a second nitride film 19b over the entire structure, and then separating the first device by a mask process and an etching process. Etching the second nitride film 19b deposited on the portion where the oxide film 12a is removed, and thermally oxidizing again from the step to remove the first device isolation oxide film 12a from the silicon substrate. Surface height of 11 After forming the second device isolation oxide film 12b as much as possible, removing the etched and remaining second nitride film 19b, and then forming the gate oxide film 13 on the silicon substrate 11 as a whole. After depositing polysilicon on the entire structure, the oxide film 20 was removed using a gate electrode mask to form a gate electrode 14 in a portion where the surface of the silicon substrate 11 was recessed, and then an impurity implantation process. Forming a source / drain electrode 16, and thickening and planarizing the interlayer insulating film 17 over the entire structure from the step, and then forming a contact hole 18 using a contact mask. A device isolation oxide and a gate electrode having a direct influence on the step difference ratio of the hole are formed to be the surface height of the silicon substrate to reduce the step ratio of the contact hole. Taekhol forming method. 반도체 소자의 콘택홀 형성방법에 있어서, 실리콘 기판(11)상에 제1질화막(19a)을 증축한 후, 마스크 공정 및 식각공정으로 소자분리 산화막이 형성될 부분과 게이트 전극이 형성될 부분의 제1질화막(19a)을 식각하는 단계와, 상기 단계로부터 열적으로 산화공정을 실시하여 소자분리영역에 제1소자분리 산화막(12a)을, 게이트 전극이 형성될 부분에 산화막(20)을 동시에 형성하는 단계와, 상기 단계로부터 형성된 제1소자분리 산화막(12a) 및 산화막(20)을 제거한 후, 전체구조상부에 제2질화막(19b)을 증착한 다음, 마스크 공정 및 식각공정으로 상기 제1소자분리 산화막(12a)이 제거된 부분에 증착된 제2질화막(19b)을 식각하는 단계와, 상기 단계로부터 다시 열적으로 산화공정을 실시하여 상기 제1소자분리 산화막(12a)이 제거된 부분에 실리콘 기판(11)의 표면 높이가 되도록 제2소자분리 산화막(12b)을 형성한 후, 상기 식각되고 남은 제2질화막(19b)을 제거한 다음, 전체적으로 실리콘 기판(11)상에 게이트 산화막(13)을 형성하는 단계와, 상기 단계로부터 전체구조상부에 폴리실리콘을 증착한 다음, 게이트 전극 마스크 및 금속배선 마스크를 사용하여 상기 산화막(20)이 제거되어 실리콘 기판(11) 표면이 함몰된 부분에 게이트 전극(14)을, 상기 제2소자분리 산화막(12b) 상의 식각흠(21)에 금속배선(14a)을 형성한 후, 불순물 주입공정으로 소오스/드레인 전극(16)을 형성하는 단계와, 상기 단계로부터 전체구조 상부에 층간 절연막(17)을 두껍게 증착 평탄화한 후, 콘택 마스크를 사용하여 콘택홀(18)을 형성하는 단계로 이루어져, 콘택홀의 단차비에 직접적인 영향을 미치는 소자분리 산화막, 게이트 전극 및 소자분리 산화막상에 형성된 금속배선을 실리콘 기판의 표면 높이가 되도록 형성하여 콘택홀의 단차비를 감소시키는 것을 특징으로 하는 소자의 콘택홀 형성방법.In the method for forming a contact hole of a semiconductor device, after the first nitride film 19a is formed on the silicon substrate 11, a portion of the portion where the device isolation oxide film is to be formed and the gate electrode is to be formed by the mask process and the etching process are formed. Etching the first nitride film 19a, and thermally oxidizing the same to form the first device isolation oxide film 12a in the device isolation region and the oxide film 20 in the portion where the gate electrode is to be formed. And removing the first device isolation oxide film 12a and the oxide film 20 formed from the step, depositing a second nitride film 19b over the entire structure, and then separating the first device by a mask process and an etching process. Etching the second nitride film 19b deposited on the portion where the oxide film 12a is removed, and thermally oxidizing again from the step to remove the first device isolation oxide film 12a from the silicon substrate. Surface height of 11 After forming the second device isolation oxide film 12b as much as possible, removing the etched and remaining second nitride film 19b, and then forming the gate oxide film 13 on the silicon substrate 11 as a whole. After depositing polysilicon on the entire structure, the gate electrode 14 is formed on the portion where the oxide film 20 is removed using the gate electrode mask and the metallization mask to sink the surface of the silicon substrate 11, and the second After the metal wiring 14a is formed on the etch defect 21 on the device isolation oxide film 12b, the source / drain electrode 16 is formed by an impurity implantation process. 17) thickening and planarization, and then forming a contact hole 18 using a contact mask, on the device isolation oxide, gate electrode, and device isolation oxide directly affecting the step ratio of the contact hole. And forming the formed metal wirings so as to be the surface height of the silicon substrate to reduce the step difference ratio of the contact holes. 반도체 소자의 콘택홀 형성방법에 있어서, 공지의 방법에 의해 소자분리 산화막(12)이 형성된 상태에서, 마스크 공정 및 식각공정으로 상기 소자분리 산화막(12) 상부에 소정의 금속배선이 형성될 부분을 일정 깊이로 식각하여 식각홈(21)을 형성한 다음, 전체적으로 실리콘 기판(11)상에 게이트 산화막(13)을 형성하는 단계와, 상기 단계로부터 전체구조상부에 폴리실리콘을 증착한 다음, 게이트 전극 마스크 및 금속배선 마스크를 사용하여 실리콘 기판(11) 상에 게이트 전극(14)을, 상기 소자분리 산화막(12)상의 식각홈(21)에 금속배선(14a)을 형성한 후, 불순물 주입공정으로 소오스/드레인 전극(16)을 형성하는 단계와, 상기 단계로부터 전체구조상부에 층간절연막(17)을 두껍게 증착평탄화한 후, 콘택 마스크를 사용하여 콘택홀(18)을 형성하는 단계로 이루어져, 콘택홀의 단차비에 영향을 미치는 소자분리 산화막상에 형성된 금속배선을 소자분리 산화막 표면 높이가 되도록 형성하여 콘택홀의 단차비를 감소시키는 것을 특징으로 하는 소자의 콘택홀 형성방법.In the method for forming a contact hole of a semiconductor device, in a state where the device isolation oxide film 12 is formed by a known method, a portion where a predetermined metal wiring is to be formed on the device isolation oxide film 12 by a mask process and an etching process is formed. Etching to a predetermined depth to form an etch groove 21, and then forming a gate oxide film 13 on the silicon substrate 11 as a whole, and depositing polysilicon on the entire structure from the step, and then forming a gate electrode. After the gate electrode 14 is formed on the silicon substrate 11 using the mask and the metal wiring mask, and the metal wiring 14a is formed in the etching groove 21 on the device isolation oxide film 12, the impurity implantation process is performed. Forming a source / drain electrode 16, and thickening and depositing the interlayer insulating film 17 over the entire structure from the above step, and then forming a contact hole 18 using a contact mask, A method for forming a contact hole in a device, characterized in that the metal wiring formed on the device isolation oxide film affecting the step difference ratio of the contact hole is formed to have the surface height of the device isolation oxide film to reduce the step difference ratio of the contact hole. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930018526A 1993-09-15 1993-09-15 Contact hole forming method KR960016230B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930018526A KR960016230B1 (en) 1993-09-15 1993-09-15 Contact hole forming method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930018526A KR960016230B1 (en) 1993-09-15 1993-09-15 Contact hole forming method

Publications (2)

Publication Number Publication Date
KR950009925A true KR950009925A (en) 1995-04-26
KR960016230B1 KR960016230B1 (en) 1996-12-07

Family

ID=19363558

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930018526A KR960016230B1 (en) 1993-09-15 1993-09-15 Contact hole forming method

Country Status (1)

Country Link
KR (1) KR960016230B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970060491A (en) * 1996-01-26 1997-08-12 김주용 Method of manufacturing semiconductor device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970060491A (en) * 1996-01-26 1997-08-12 김주용 Method of manufacturing semiconductor device

Also Published As

Publication number Publication date
KR960016230B1 (en) 1996-12-07

Similar Documents

Publication Publication Date Title
KR100317219B1 (en) A method of manufacturing a semiconductor device of which the parasitic capacitance is decreased
KR100286073B1 (en) Method for manufacturing MOSFET having sidewall film
KR100278273B1 (en) A method for forming contact holes in semiconductor device
KR100242861B1 (en) Manufacturing method of semiconductor device
JP3325432B2 (en) MOS type semiconductor device and method of manufacturing the same
JPH04275436A (en) Soimos transistor
KR950009925A (en) Contact Hole Formation Method of Semiconductor Device with Reduced Step Ratio
KR970703615A (en) METHOD OF MANUFACTURING A SEMICONDUCTOR DEVICE WITH BiCMOS CIRCUIT
KR100307541B1 (en) Manufacturing method for mos transistor
KR100290912B1 (en) Method for fabricating isolation region of semiconductor device
KR0142786B1 (en) Method for forming contact hole of a semiconductor device
KR19990032670A (en) Capacitor Formation Method of Semiconductor Device Using Trench
KR950021753A (en) Method for manufacturing field effect semiconductor device
KR0186186B1 (en) Method of manufacturing semiconductor device
KR100511090B1 (en) Metal wiring formation method of MOS PET transistor
KR950021724A (en) Method for manufacturing field effect semiconductor device
KR950021428A (en) Semiconductor device and manufacturing method thereof
KR940016619A (en) Gate electrode formation method of semiconductor device
KR20020030338A (en) Manufacturing method for semiconductor device
KR950021096A (en) Contact hole formation method of semiconductor device
KR950021787A (en) Method for manufacturing field effect semiconductor device
KR970003613A (en) Transistor Formation Method of Semiconductor Device
KR930003366A (en) Device Separation Method of Semiconductor Device
KR970003520A (en) Contact hole formation method of a fine semiconductor device
KR950021276A (en) Semiconductor MOSFET Manufacturing Method

Legal Events

Date Code Title Description
A201 Request for examination
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20041119

Year of fee payment: 9

LAPS Lapse due to unpaid annual fee