JPS5720454A - Durable and stable prom - Google Patents

Durable and stable prom

Info

Publication number
JPS5720454A
JPS5720454A JP9505280A JP9505280A JPS5720454A JP S5720454 A JPS5720454 A JP S5720454A JP 9505280 A JP9505280 A JP 9505280A JP 9505280 A JP9505280 A JP 9505280A JP S5720454 A JPS5720454 A JP S5720454A
Authority
JP
Japan
Prior art keywords
film
window
program
exfoliated
durability
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.)
Granted
Application number
JP9505280A
Other languages
Japanese (ja)
Other versions
JPH0226784B2 (en
Inventor
Yoshiro Nakamatsu
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP9505280A priority Critical patent/JPS5720454A/en
Publication of JPS5720454A publication Critical patent/JPS5720454A/en
Publication of JPH0226784B2 publication Critical patent/JPH0226784B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C16/00—Erasable programmable read-only memories
    • G11C16/02—Erasable programmable read-only memories electrically programmable
    • G11C16/06—Auxiliary circuits, e.g. for writing into memory
    • G11C16/10—Programming or data input circuits
    • G11C16/18—Circuits for erasing optically

Abstract

PURPOSE:To obtain the PROM having durability and stability by forming a detachable ultraviolet intercepting shield at an opening section of a program window. CONSTITUTION:The ultraviolet intercepting shield 6 is a flexible film, the principal ingredient thereof is methyl methacrylate which is manufactured by copolymerizing an acryl group monomer, and adhesives 7 are ones, which do not contain aromatic hydrocarbon, a halogen compound, alcohols, etc. and can be removed, do not deteriorate the film 6, bond the film 6 around the window 4 and can be exfoliated as necessary. When erasing, the film is exfoliated, ultraviolet rays are irradiated to a memory element 1 from the window 4 and a record is erased. According to this constitution, the treatment of adhesion and exfoliation is ealy when repeating the writing and erasure of a program, the devece abounds in durability, and prevents the extinction of the program written during preservation for a long time, and a function can maintained safely and positively.
JP9505280A 1980-07-14 1980-07-14 Durable and stable prom Granted JPS5720454A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9505280A JPS5720454A (en) 1980-07-14 1980-07-14 Durable and stable prom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9505280A JPS5720454A (en) 1980-07-14 1980-07-14 Durable and stable prom

Publications (2)

Publication Number Publication Date
JPS5720454A true JPS5720454A (en) 1982-02-02
JPH0226784B2 JPH0226784B2 (en) 1990-06-12

Family

ID=14127277

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9505280A Granted JPS5720454A (en) 1980-07-14 1980-07-14 Durable and stable prom

Country Status (1)

Country Link
JP (1) JPS5720454A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4519050A (en) * 1982-06-17 1985-05-21 Intel Corporation Radiation shield for an integrated circuit memory with redundant elements
EP0228914A2 (en) 1985-12-28 1987-07-15 Konica Corporation Method of processing lightsensitive silver halide color photographic material

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5520224U (en) * 1978-07-24 1980-02-08
JPS5533019A (en) * 1978-08-28 1980-03-08 Mitsubishi Electric Corp Light-erased semiconductor memory

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52111732A (en) * 1976-03-16 1977-09-19 Addressograph Multigraph Copy and apparatus for forming reeusable master

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5520224U (en) * 1978-07-24 1980-02-08
JPS5533019A (en) * 1978-08-28 1980-03-08 Mitsubishi Electric Corp Light-erased semiconductor memory

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4519050A (en) * 1982-06-17 1985-05-21 Intel Corporation Radiation shield for an integrated circuit memory with redundant elements
EP0228914A2 (en) 1985-12-28 1987-07-15 Konica Corporation Method of processing lightsensitive silver halide color photographic material

Also Published As

Publication number Publication date
JPH0226784B2 (en) 1990-06-12

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