KR960026741A - Capacitor Manufacturing Method of Semiconductor Device - Google Patents

Capacitor Manufacturing Method of Semiconductor Device Download PDF

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Publication number
KR960026741A
KR960026741A KR1019940040539A KR19940040539A KR960026741A KR 960026741 A KR960026741 A KR 960026741A KR 1019940040539 A KR1019940040539 A KR 1019940040539A KR 19940040539 A KR19940040539 A KR 19940040539A KR 960026741 A KR960026741 A KR 960026741A
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South Korea
Prior art keywords
insulating layer
forming
etching
mask
conductive
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KR1019940040539A
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Korean (ko)
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신동원
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김주용
현대전자산업 주식회사
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Priority to KR1019940040539A priority Critical patent/KR960026741A/en
Publication of KR960026741A publication Critical patent/KR960026741A/en

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Abstract

본 발명은 반도체소자의 캐패시터 제조방법에 관한 것으로, 반도체 기판 상부에 하부절연층, 제1도전층 및 제1절연막을 형성하고 그 상부에 콘택마스크를 이용하여 감광막패턴을 형성한 다음, 이를 이용하여 상기 제1절연막에 언더컷이 형성되도록 등방성식각하고 상기 제1도전층과 하부절연층을 식각하여 콘택홀을 형성한 다음, 상기 감광막 패턴을 제거하고 전체표면상부에 제2절연막을 형성하고 이를 이방성 식각하여 제2절연막 스페이서를 형성한 다음, 전체표면상부에 제2도전층을 형성하고 저장전극마스크를 이용하여 상기 하부절연층이 노출되도록 식각한 다음, 노출된 절연막을 제거하여 표면적이 증가된 저장전극을 형성하고 상기 하부절연층에 형성된 전도물질과의 절연특성을 향상시켜 반도체소자의 고집적화를 가능하게 하고 이에 따른 반도체소자의 신뢰성을 향상시키는 기술이다.The present invention relates to a method for manufacturing a capacitor of a semiconductor device, wherein a lower insulating layer, a first conductive layer, and a first insulating layer are formed on a semiconductor substrate, and a photoresist pattern is formed on the upper portion of the semiconductor substrate using a contact mask. Isotropic etching is performed to form an undercut on the first insulating layer, and the first conductive layer and the lower insulating layer are etched to form a contact hole. Then, the photoresist pattern is removed and a second insulating layer is formed on the entire surface. To form a second insulating layer spacer, a second conductive layer is formed on the entire surface, and the lower insulating layer is etched by using a storage electrode mask, and then the exposed insulating layer is removed to increase the surface area of the storage electrode. And improve the insulating properties with the conductive material formed on the lower insulating layer to enable high integration of the semiconductor device A technique of improving the reliability of the conductor elements.

Description

반도체소자의 캐패시터 제조방법Capacitor Manufacturing Method of Semiconductor Device

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

제2A도 내지 제2F도는 본 발명의 실시예에 따른 반도체소자의 캐패시터 제조공정을 도시한 단면도.2A to 2F are sectional views showing a capacitor manufacturing process of a semiconductor device according to an embodiment of the present invention.

Claims (7)

반도체 기판 상부에 하부절연층, 제1도전층 및 제1절연막을 순차적으로 형성하는 공정과, 상기 제1절연막 상부에 제1감광막패턴을 형성하는 공정과, 상기 감광막패턴을 마스크로하여 상기 제1절연막을 식각하여 언더컷을 형성하는 공정과, 상기 감광막패턴을 마스크로하여 상기 제1도전층과 하부 절연층을 순차적으로 식각하여 콘택홀을 형성하는 공정과, 상기 감광막패턴을 제거하는 공정과, 전체표면상부에 제2절연막을 일정두께 형성하는 공정과, 상기 제2절연막을 이방성식각하여 제2절연막 스페이서를 형성하는 공정과, 전체표면상부에 제2도전층을 일정두께 형성하는 공정과, 저장전극마스크를 이용하여 상기 하부절연층이 노출되도록 식각하는 공정과, 상기 노출된 절연막을 제거함으로써 표면적이 증가된 저장전극을 형성하는 공정을 포함하는 반도체소자의 캐패시터 제조방법.Sequentially forming a lower insulating layer, a first conductive layer, and a first insulating layer on the semiconductor substrate, forming a first photoresist pattern on the first insulating layer, and using the photoresist pattern as a mask. Forming an undercut by etching the insulating film, forming a contact hole by sequentially etching the first conductive layer and the lower insulating layer using the photosensitive film pattern as a mask, removing the photosensitive film pattern, and Forming a second thickness of the second insulating film on the surface, forming a second insulating film spacer by anisotropically etching the second insulating film, forming a second thickness of the second conductive layer on the entire surface, and a storage electrode Etching to expose the lower insulating layer by using a mask; and forming a storage electrode having an increased surface area by removing the exposed insulating layer. Method for manufacturing a capacitor of a semiconductor device. 제1항에 있어서, 상기 제1,2도전층은 단차피복비가 우수한 전도물질로 형성되는 것을 특징으로 하는 반도체소자의 캐패시터 제조방법.The method of claim 1, wherein the first and second conductive layers are formed of a conductive material having excellent step coverage ratio. 제1항에 있어서, 상기 제1,2절연막은 상기 제1,2도전층과 일정한 식각선택비 차이를 갖는 절연체로 형성되는 것을 특징으로 하는 반도체소자의 캐패시터 제조방법.The method of claim 1, wherein the first and second insulating layers are formed of an insulator having a predetermined difference in etching selectivity from the first and second conductive layers. 제1항에 있어서, 상기 감광막패턴은 콘택마스크를 이용한 식각공정으로 형성되는 것을 특징으로 하는 반도체소자의 캐패시터 제조방법.The method of claim 1, wherein the photoresist pattern is formed by an etching process using a contact mask. 제1항에 있어서, 상기 언더컷은 상기 제1감광막패턴을 마스크로하는 습식방법의 등방성식각공정으로 형성되는 것을 특징으로 하는 반도체소자의 캐패시터 제조방법.The method of claim 1, wherein the undercut is formed by an isotropic etching process of a wet method using the first photoresist pattern as a mask. 제1항에 있어서, 상기 제2절연막 스페이서는 상기 콘택홀의 측벽과 상기 제1절연막의 언더컷 부분에 형성되는 것을 특징으로 하는 반도체소자의 캐패시터 제조방법.The method of claim 1, wherein the second insulating layer spacer is formed on sidewalls of the contact hole and undercut portions of the first insulating layer. 제1항에 있어서, 상기 노출된 절연막 식각공정은 상기 제1,2도전층과의 식각선택비 차이를 이용한 습식방법으로 실시되는 것을 특징으로 하는 반도체소자의 캐패시터 제조방법.The method of claim 1, wherein the exposed insulating layer etching process is performed by a wet method using a difference in etching selectivity from the first and second conductive layers. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940040539A 1994-12-31 1994-12-31 Capacitor Manufacturing Method of Semiconductor Device KR960026741A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100486197B1 (en) * 1997-06-30 2006-04-21 삼성전자주식회사 Capacitor bottom electrode formation method using halftone mask

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100486197B1 (en) * 1997-06-30 2006-04-21 삼성전자주식회사 Capacitor bottom electrode formation method using halftone mask

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