KR980005483A - Method for manufacturing charge storage electrode of semiconductor device - Google Patents

Method for manufacturing charge storage electrode of semiconductor device Download PDF

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Publication number
KR980005483A
KR980005483A KR1019960023243A KR19960023243A KR980005483A KR 980005483 A KR980005483 A KR 980005483A KR 1019960023243 A KR1019960023243 A KR 1019960023243A KR 19960023243 A KR19960023243 A KR 19960023243A KR 980005483 A KR980005483 A KR 980005483A
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KR
South Korea
Prior art keywords
conductive layer
forming
storage electrode
charge storage
contact hole
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KR1019960023243A
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Korean (ko)
Inventor
황창연
백현철
Original Assignee
김주용
현대전자산업 주식회사
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Application filed by 김주용, 현대전자산업 주식회사 filed Critical 김주용
Priority to KR1019960023243A priority Critical patent/KR980005483A/en
Publication of KR980005483A publication Critical patent/KR980005483A/en

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Abstract

본 발명은 반도체 소자의 전하저장전극 제조방법에 관한 것으로서, 전하저장전극용 콘택홀을 통하여 반도체 기판과 접촉되는 제1도전층 패턴을 형성하고, 상기 제1도전층 패턴 테두리 부분의 층간절연막을 제거하여 홈을 형성한 후, 상기 제1도전층 패턴의 표면에 올록볼록한 형상의 제2도전층 패턴을 형성하여 제1 및 제2도전층 패턴으로된 전하저장전극을 형성하였으므로, 전하저장전극에 의한 단차의 증가가 거의 없이 평면적으로 표면적이 증가되어 소자의 동작에 필요한 정전 용량을 확보함과 동시에 셀영역과 주변회로 영역간의 단차를 감소시켜 후속 금속배선 공정이나 평탄화 공정을 용이하게 공정수율 및 소장 동작의 신뢰성을 향상시킬 수 있다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a charge storage electrode of a semiconductor device. After the formation of the grooves, the second conductive layer pattern having a convex shape was formed on the surface of the first conductive layer pattern to form a charge storage electrode formed of the first and second conductive layer patterns. The surface area is increased in planar view with little increase of the step to secure the capacitance necessary for the operation of the device, and the step difference between the cell area and the peripheral circuit area is reduced to facilitate the subsequent metallization process or planarization process. Can improve the reliability.

Description

반도체 소자의 전하저장전극 제조방법Method for manufacturing charge storage electrode of semiconductor device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제2a도 내지 제2e도는 본발명에 따른 반도체소자의 전하저장전극 제조공정도.2a to 2e is a manufacturing process of the charge storage electrode of the semiconductor device according to the present invention.

Claims (9)

반도체기판상에 층간절연막을 형성하는 공정과, 상기 반도체 기판에서 전하저장전극 콘택홀로 에정되어 있는 부분 상측의 층간 절연막을 제거하여 반도체 기판을 노출시키는 전하저장전극 콘택홀을 형성하는 공정과, 상기 전하저장전극 콘택홀을 통하여 반도체 기판과 접촉되는 제1 도전층 패턴을 형성하는 공정과, 상기 제1도전층 패턴의 테두리 부분의 층간 절연막을 식각하여 홈을 형성하는 공정과, 상기 제1도전층 패턴상에 다수개의 제2도전층 패턴을 형성하여 제1및 제2도전층, 패턴으로 구성되는 전하저장전극을 형성하는 공정을 구비하는 반도체 소자의 전하저장전극 제조방법.Forming an interlayer insulating film on the semiconductor substrate; forming a charge storage electrode contact hole exposing the semiconductor substrate by removing the interlayer insulating film on the upper portion of the semiconductor substrate defined as the charge storage electrode contact hole; Forming a first conductive layer pattern in contact with the semiconductor substrate through a storage electrode contact hole; forming a groove by etching an interlayer insulating layer at an edge of the first conductive layer pattern; and forming the groove; A method of manufacturing a charge storage electrode of a semiconductor device, the method comprising: forming a plurality of second conductive layer patterns on the substrate to form a charge storage electrode comprising the first and second conductive layers and the pattern. 제1항에 있어서, 상기 층간 절연막이 BPSG로 형성되는 것을 특징으로 하는 반도체 소자의 전하저장전극 제조방법.The method of claim 1, wherein the interlayer insulating layer is formed of BPSG. 제1항에 있어서, 상기 콘택홀 형성을 위한 식각 공정을 CF4나 CHF3또는 Ar 식각가스를 기본으로 사용하는 것을 특징으로 하는 반도체 소자의 전하저장전극 제조방법.The method of claim 1, wherein the etching process for forming the contact hole is based on CF 4 , CHF 3, or an Ar etching gas. 제1항에 있어서, 상기 제1도전층 및 제2도전층을 상기 콘택홀을 메우지 못하는 정도의 두께로 형성하는 것을 특징으로 하는 반도체 소자의 전하저장전극 제조방법.The method of claim 1, wherein the first conductive layer and the second conductive layer are formed to a thickness such that they do not fill the contact hole. 제4항에 있어서, 상기 제1도전층을 500~5000Å 두께로 형성하는 것을 특징으로 하는 반도체 소자의 전하저장 전극 제조방법.5. The method of claim 4, wherein the first conductive layer is formed to a thickness of 500 to 5000 microns. 제4항에 있어서, 상기 제2도전층을 500~2000Å 두께로 형성하는 것을 특징으로 하는 반도체 소자의 전하저장 전극 제조방법.5. The method of claim 4, wherein the second conductive layer is formed to a thickness of 500 to 2000 microns. 제1항에 있어서, 상기 흠을 형성하는 공정을 습식식각방법으로 실시하는 것을 특징으로 하는 반도체 소자의 전하저장전극 제조방법.The method of claim 1, wherein the forming of the defect is performed by a wet etching method. 제7항에 있어서, 상기 홈 형성 공정을 1~20:1정도로 순수와 희석된 B.O.E용액을 사용하는 것을 특징으로 하는 반도체 소자의 전하저장전극 제조방법.10. The method of claim 7, wherein the groove forming process comprises using a B.O.E solution diluted with pure water at about 1 to 20: 1. 제1항에 있어서, 상기 제1 및 제2도전층을 다결정 실리콘으로 형성하거나, 비정질 실리콘으로 형성한 후 열처리하여 다결정화 하거나, 금속 재질도 형성하는 것을 특징으로 하는 반도체 소자의 전하저장전극 제조방법.The method of claim 1, wherein the first and second conductive layers are formed of polycrystalline silicon, or are formed of amorphous silicon and then heat-treated to polycrystallize, or to form a metal material. . ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019960023243A 1996-06-24 1996-06-24 Method for manufacturing charge storage electrode of semiconductor device KR980005483A (en)

Priority Applications (1)

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KR1019960023243A KR980005483A (en) 1996-06-24 1996-06-24 Method for manufacturing charge storage electrode of semiconductor device

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KR1019960023243A KR980005483A (en) 1996-06-24 1996-06-24 Method for manufacturing charge storage electrode of semiconductor device

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KR980005483A true KR980005483A (en) 1998-03-30

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