JPS52146586A - Non-volatile semiconductor memory device - Google Patents
Non-volatile semiconductor memory deviceInfo
- 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
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
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5124140A (en) * | 1974-05-15 | 1976-02-26 | Isotronics Inc | Prom yoshigaisentokamadotosonoseiho |
-
1976
- 1976-05-31 JP JP6305576A patent/JPS52146586A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5124140A (en) * | 1974-05-15 | 1976-02-26 | Isotronics Inc | Prom yoshigaisentokamadotosonoseiho |
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