KR850005734A - Semiconductor memory - Google Patents

Semiconductor memory Download PDF

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Publication number
KR850005734A
KR850005734A KR1019840007746A KR840007746A KR850005734A KR 850005734 A KR850005734 A KR 850005734A KR 1019840007746 A KR1019840007746 A KR 1019840007746A KR 840007746 A KR840007746 A KR 840007746A KR 850005734 A KR850005734 A KR 850005734A
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KR
South Korea
Prior art keywords
conductivity type
impurity diffusion
capacitor
diffusion regions
regions
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Application number
KR1019840007746A
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Korean (ko)
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KR890004767B1 (en
Inventor
유끼마사 우치다
Original Assignee
사바 쇼오이찌
가부시끼 가이샤 도오시바
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Application filed by 사바 쇼오이찌, 가부시끼 가이샤 도오시바 filed Critical 사바 쇼오이찌
Publication of KR850005734A publication Critical patent/KR850005734A/en
Application granted granted Critical
Publication of KR890004767B1 publication Critical patent/KR890004767B1/en

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    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10BELECTRONIC MEMORY DEVICES
    • H10B12/00Dynamic random access memory [DRAM] devices
    • H10B12/30DRAM devices comprising one-transistor - one-capacitor [1T-1C] memory cells
    • H10B12/37DRAM devices comprising one-transistor - one-capacitor [1T-1C] memory cells the capacitor being at least partially in a trench in the substrate
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11CSTATIC STORES
    • G11C11/00Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
    • G11C11/21Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements
    • G11C11/34Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices
    • G11C11/40Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L27/00Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/02Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
    • H01L27/04Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body
    • H01L27/10Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including a plurality of individual components in a repetitive configuration

Abstract

내용 없음No content

Description

반도체 기억장치Semiconductor memory

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

Claims (4)

구형 캐패시터를 구비하고 있는 반도체 기억장치에 있어서, 제 1 도전형인 반도체층(21), 제 2 도전형으로서 상기 반도체층(21)의 표면층에 선택적오로 매설되어 있는 웰 영역(22)의 표면으로부터 상기 반도체층(21)의 중간에 걸쳐서 형성되어 있는 골(26a, 26b), 골(26a, 26b)의 내면에 있는 웰영역 (22) 및 반도체층(21)에 형성되어 있는 제 2 도전형 불순물 확산영역(27a, 27b), 골(26a, 26b)의 내면에 있는 제 2 도전형 불순물확산 영역(27a, 27b)보다 접합깊이가 얕게 형성되어 있는 제 1 도전형 불순물 확산영역(28a, 28b), 캐패시터용 절연막(31a, 31b)을 매개하여 상기한 골(26a, 26b)의 내면으로부터 최소한 개구부 주변에까지 설치되어 있는 전극(30)등을 구비하고, 상기한 전극(30)울 제 1 캐패시터 전극으로 사용하고, 제 1 도전형 불순물확산영역(28a, 28b)을 제 2 캐패시터 전극으로 사용하는 것을 특징으로 하는 반도체 기억장치.In a semiconductor memory device having a spherical capacitor, the semiconductor layer 21 of the first conductivity type and the surface of the well region 22 selectively embedded in the surface layer of the semiconductor layer 21 as the second conductivity type are described above. Diffusion of the second conductivity type impurity formed in the valleys 26a and 26b formed over the middle of the semiconductor layer 21, the well region 22 in the inner surface of the valleys 26a and 26b and the semiconductor layer 21. The first conductivity type impurity diffusion regions 28a and 28b having a shallower junction depth than the second conductivity type impurity diffusion regions 27a and 27b on the inner surfaces of the regions 27a and 27b and the valleys 26a and 26b, An electrode 30 provided from the inner surfaces of the valleys 26a and 26b to at least the periphery of the opening via the capacitor insulating films 31a and 31b, and the electrode 30 as the first capacitor electrode. Using the first conductivity type impurity diffusion regions 28a and 28b as the second capacitor electrode. A semiconductor memory device characterized in that it is used. 제 1 항에 있어서, 반도체층(21)과 웰 영역(22), 제 2 도전형의 불순물확산영역(27a, 27b), 제 1 도전형의 불순물확산영역(28a, 28b)등의 농도를 각각 n1, n2, n3 및 n4로 표시한다면, 그들의 농도 관계가 n1<n2n3<n4로 되는 것을 특징으로 하는 반도체 기억장치.The concentration of the semiconductor layer 21, the well region 22, the impurity diffusion regions 27a and 27b of the second conductivity type, the impurity diffusion regions 28a and 28b of the first conductivity type, and the like, respectively. If expressed as n1, n2, n3 and n4, their concentration relation is n1 <n2 and n3 &lt; n4. 제 1 항에 있어서, 구형 캐패시터의 제 2 도전형과 제 1 도전형으 불순물확산영역(27a,27b,28a,28b)이 2중확산법에 의해서 형성되는 것을 특징으로 하는 반도체 기억장치.2. The semiconductor memory device according to claim 1, wherein the impurity diffusion regions (27a, 27b, 28a, 28b) of the second capacitor and the first conductivity type of the spherical capacitor are formed by a double diffusion method. 제 1 항에 있어서, 제 2 도전형인 웰 영역(22)의 표면에 상호 전기적으로 분리되어서 설치된 제 1 도전형의 소스영역과 드레인영역(36a,37a,36b,37b), 최소한 상기 소스영역과 드레인 영역(36a,37a,36b,37b)간을 포함하게되는 웰 영역(22)에 게이트 절연막(38a, 38b)을 매개하여서 설치되어진 전극(39a, 39b)등으로 구성되는 전승 트랜지스터(35a, 35b)를 구비하고, 상기한 소스영역과 드레인 영역(36a,37a,36b,37b)의 한쪽이 구형 캐패시터의 제 1 도전형 불순물확산영역(28a, 28b)에 접속되고 다른 한쪽이 비트선(42)과 접속되는 것을 특징으로 하는 반도체 기억장치2. The source and drain regions 36a, 37a, 36b, and 37b of the first conductivity type, which are provided on the surface of the well region 22 of the second conductivity type, and are electrically separated from each other. The transfer transistors 35a and 35b constituted by the electrodes 39a and 39b provided in the well region 22 including the regions 36a, 37a, 36b and 37b via the gate insulating films 38a and 38b. And one side of the source region and the drain region 36a, 37a, 36b, 37b is connected to the first conductivity type impurity diffusion regions 28a, 28b of the spherical capacitor, and the other is connected to the bit line 42. Semiconductor memory device characterized in that the connection ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019840007746A 1984-01-20 1984-12-07 Semiconductor memory device KR890004767B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP59-7958 1984-01-20
JP59007958A JPS60152059A (en) 1984-01-20 1984-01-20 Semiconductor memory device

Publications (2)

Publication Number Publication Date
KR850005734A true KR850005734A (en) 1985-08-28
KR890004767B1 KR890004767B1 (en) 1989-11-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019840007746A KR890004767B1 (en) 1984-01-20 1984-12-07 Semiconductor memory device

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JP (1) JPS60152059A (en)
KR (1) KR890004767B1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR930007522B1 (en) * 1985-03-08 1993-08-12 가부시끼 가이샤 히다찌세이사꾸쇼 Semiconductor memory using a trench capacitor
JPH0650766B2 (en) * 1985-09-27 1994-06-29 株式会社東芝 Semiconductor memory device
JPH0650767B2 (en) * 1985-10-22 1994-06-29 株式会社東芝 Method of manufacturing semiconductor memory device
JPH0682797B2 (en) * 1985-12-16 1994-10-19 株式会社東芝 Method for manufacturing semiconductor device
DE3780840T2 (en) * 1986-03-03 1993-03-25 Fujitsu Ltd DYNAMIC MEMORY CONTAINING A GROOVE CAPACITOR WITH OPTIONAL ACCESS.
JPS6427252A (en) * 1987-04-13 1989-01-30 Nec Corp Semiconductor storage device
US4794434A (en) * 1987-07-06 1988-12-27 Motorola, Inc. Trench cell for a dram

Also Published As

Publication number Publication date
JPS60152059A (en) 1985-08-10
JPH0365664B2 (en) 1991-10-14
KR890004767B1 (en) 1989-11-25

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