JPS52146586A - Non-volatile semiconductor memory device - Google Patents

Non-volatile semiconductor memory device

Info

Publication number
JPS52146586A
JPS52146586A JP6305576A JP6305576A JPS52146586A JP S52146586 A JPS52146586 A JP S52146586A JP 6305576 A JP6305576 A JP 6305576A JP 6305576 A JP6305576 A JP 6305576A JP S52146586 A JPS52146586 A JP S52146586A
Authority
JP
Japan
Prior art keywords
memory device
semiconductor memory
volatile semiconductor
erasing
windows
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
JP6305576A
Other languages
Japanese (ja)
Inventor
Masanori Ihara
Yuji Takeshita
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP6305576A priority Critical patent/JPS52146586A/en
Publication of JPS52146586A publication Critical patent/JPS52146586A/en
Pending legal-status Critical Current

Links

Landscapes

  • Non-Volatile Memory (AREA)

Abstract

PURPOSE: To achieve the increase in size of memory chips without increasing the area of windows by making possible the radiation of light used for writing or erasing of data through a transparent body which has concave lens action.
COPYRIGHT: (C)1977,JPO&Japio
JP6305576A 1976-05-31 1976-05-31 Non-volatile semiconductor memory device Pending JPS52146586A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6305576A JPS52146586A (en) 1976-05-31 1976-05-31 Non-volatile semiconductor memory device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6305576A JPS52146586A (en) 1976-05-31 1976-05-31 Non-volatile semiconductor memory device

Publications (1)

Publication Number Publication Date
JPS52146586A true JPS52146586A (en) 1977-12-06

Family

ID=13218258

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6305576A Pending JPS52146586A (en) 1976-05-31 1976-05-31 Non-volatile semiconductor memory device

Country Status (1)

Country Link
JP (1) JPS52146586A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5124140A (en) * 1974-05-15 1976-02-26 Isotronics Inc Prom yoshigaisentokamadotosonoseiho

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5124140A (en) * 1974-05-15 1976-02-26 Isotronics Inc Prom yoshigaisentokamadotosonoseiho

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