Programmable read-only memory formed with opposing PN diodes

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4727409
SERIAL NO

06763063

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A semiconductor PROM contains a group of PROM cells (12) each consisting of a pair of opposing diodes oriented vertically with their common intermediate region (22 and 24) fully adjoining a recessed oxide insulating region (16). The PN junction (30) of the upper diode of each pair lies in non-monocrystalline semiconductor material. A composite buried layer consisting of buried regions (32) which adjoin the insulating region below the lower cell regions (20) and a buried web (44) which laterally surrounds each buried region is employed to improve programming efficiency as well as provide intermediate electrical connections.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
SIGNETICS CORPORATIONSUNNYVALE, CA0

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cline, Ronald L Los Gatos, CA 22 142
Conner, George W Ben Lomond, CA 28 529

Cited Art Landscape

Patent Info (Count) # Cites Year
 
NATIONAL SEMICONDUCTOR CORPORATION (2)
* 4418468 Process for fabricating a logic structure utilizing polycrystalline silicon Schottky diodes 26 1981
* 4480318 Method of programming of junction-programmable read-only memories 11 1982
 
SOITEC (1)
7632739 Fabrication of hybrid substrate with defect trapping zone 20 2007
 
INTERSIL CORPORATION (1)
* 4403399 Method of fabricating a vertical fuse utilizing epitaxial deposition and special masking 15 1981
 
FAIRCHILD SEMICONDUCTOR CORPORATION (1)
* 4624046 Oxide isolation process for standard RAM/PROM and lateral PNP cell RAM 24 1985
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
* 5298784 Electrically programmable antifuse using metal penetration of a junction 70 1992
 
Other [Check patent profile for assignment information] (1)
* 2006/0093,520 Automated molecular pathology apparatus having fixed slide platforms 1 2005
 
NATIONAL SEMICONDUCTOR CORPORATION (1)
* 5436496 Vertical fuse device 25 1994
 
U.S. PHILIPS CORPORATION (1)
* 5272370 Thin-film ROM devices and their manufacture 52 1992
 
UNITED MICROELECTRONICS CORP. (1)
* 5937280 Method of manufacturing a ROM 17 1997
 
MICRON TECHNOLOGY, INC. (2)
* 5991187 Method for programming semiconductor junctions and for using the programming to control the operation of an integrated device 2 1998
* 5973380 Semiconductor junction antifuse circuit 22 1998
 
TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD. (1)
* 5441907 Process for manufacturing a plug-diode mask ROM 117 1994
 
VENTANA MEDICAL SYSTEMS, INC. (13)
6594537 Automated tissue assay using standardized chemicals and packages 81 1998
7270785 Automated molecular pathology apparatus having fixed slide platforms 33 2002
7303725 Automated high volume slide staining system 55 2003
* 2004/0002,163 Automated high volume slide staining system 35 2003
7378055 Automated molecular pathology apparatus having fixed slide platforms 50 2003
* 2003/0203,493 Automated molecular pathology apparatus having fixed slide platforms 30 2003
7468161 Automated high volume slide processing system 35 2005
8663991 Automated high volume slide processing system 1 2005
* 2005/0250,211 Automated high volume slide processing system 29 2005
7404927 Automated molecular pathology apparatus having fixed slide platforms 31 2005
8048373 Automated high volume slide staining system 4 2007
* 2008/0038,836 AUTOMATED HIGH VOLUME SLIDE STAINING SYSTEM 3 2007
9528918 Automated high volume slide processing system 0 2013
* Cited By Examiner