JPS5650554A - Semiconductor memory - Google Patents

Semiconductor memory

Info

Publication number
JPS5650554A
JPS5650554A JP12763179A JP12763179A JPS5650554A JP S5650554 A JPS5650554 A JP S5650554A JP 12763179 A JP12763179 A JP 12763179A JP 12763179 A JP12763179 A JP 12763179A JP S5650554 A JPS5650554 A JP S5650554A
Authority
JP
Japan
Prior art keywords
memory cells
elements
film
gold
semiconductor substrate
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP12763179A
Other languages
Japanese (ja)
Inventor
Tatsuya Enomoto
Koichi Nagasawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP12763179A priority Critical patent/JPS5650554A/en
Publication of JPS5650554A publication Critical patent/JPS5650554A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/552—Protection against radiation, e.g. light or electromagnetic waves
    • H01L23/556—Protection against radiation, e.g. light or electromagnetic waves against alpha rays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001—Technical content checked by a classifier
    • H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Abstract

PURPOSE:To prevent erroneous storage caused by alpha particles irradiated from a radioactive atom of infinitesimal amount contained in a package by forming a metallic film made of elements of 72-79 of atomic numbers on the surface of a semiconductor substrate formed with memory cells. CONSTITUTION:There are formed a number of memory cells 31, a peripheral circuit 32 for operating the memory cells 31, an insulating film 33 formed on the entire surface except the connecting portions of the respective elements, and a wiring metal 34 for electrically connecting between the respective elements on the main surface of a semiconductor substrate 30, and a protective film 35 made of silicon oxide, silicon nitride or the like on the surface to cover completely the circuit 32. Further, a metallic film 36 made of gold is so formed on the surface 35 as not to make contact with the metal 34 exposed by a photoetching process of the like. The film 36 may be formed of elements of 72-79 of atomic numbers having large preventive capacity of alpha particles 37 in addition to the gold.
JP12763179A 1979-10-02 1979-10-02 Semiconductor memory Pending JPS5650554A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12763179A JPS5650554A (en) 1979-10-02 1979-10-02 Semiconductor memory

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12763179A JPS5650554A (en) 1979-10-02 1979-10-02 Semiconductor memory

Publications (1)

Publication Number Publication Date
JPS5650554A true JPS5650554A (en) 1981-05-07

Family

ID=14964861

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12763179A Pending JPS5650554A (en) 1979-10-02 1979-10-02 Semiconductor memory

Country Status (1)

Country Link
JP (1) JPS5650554A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59179091A (en) * 1983-03-29 1984-10-11 Agency Of Ind Science & Technol Enzymatic hydrolysis of lipid
JPS60113465A (en) * 1983-11-24 1985-06-19 Fujitsu Ltd Semiconductor device
JPS60227689A (en) * 1985-04-05 1985-11-12 Nitto Electric Ind Co Ltd Production of acrylic ester by microorganism producing the same
JPS60227688A (en) * 1985-04-05 1985-11-12 Nitto Electric Ind Co Ltd Production of acrylic ester by microorganism producing the same
US6242015B1 (en) 1995-06-08 2001-06-05 Kyowa Hakko Kogyo Co., Ltd. Process for producing a fruity flavoring agent

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59179091A (en) * 1983-03-29 1984-10-11 Agency Of Ind Science & Technol Enzymatic hydrolysis of lipid
JPS6318476B2 (en) * 1983-03-29 1988-04-19 Kogyo Gijutsuin
JPS60113465A (en) * 1983-11-24 1985-06-19 Fujitsu Ltd Semiconductor device
JPS60227689A (en) * 1985-04-05 1985-11-12 Nitto Electric Ind Co Ltd Production of acrylic ester by microorganism producing the same
JPS60227688A (en) * 1985-04-05 1985-11-12 Nitto Electric Ind Co Ltd Production of acrylic ester by microorganism producing the same
JPS6140394B2 (en) * 1985-04-05 1986-09-09 Nitto Electric Ind Co
JPS6140395B2 (en) * 1985-04-05 1986-09-09 Nitto Electric Ind Co
US6242015B1 (en) 1995-06-08 2001-06-05 Kyowa Hakko Kogyo Co., Ltd. Process for producing a fruity flavoring agent

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