The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 08, 1998
Filed:
Nov. 12, 1996
Allen Paine Mills, Jr, Chatham, NJ (US);
Philip Moss Platzman, Short Hills, NJ (US);
Lucent Technologies Inc., Murray Hill, NJ (US);
Abstract
A read-only memory having sets of word lines and bit lines orthogonal to each other and separated by an insulator. At specific cell sites, selected by a memory algorithm, a word line is connected to bit lines by a doped or undoped polysilicon data resistor. The use of a data resistor, rather the an active device such as a MOSFET, provides a saving in space by a factor of four. The polysilicon data resistor may have a range of values, the minimum of which is determined by the number of cell sites and the resistance of the word and bit lines. The maximum value of the data resistor is determined by thermal noise considerations. Within this range, the data resistors may also have discrete values so that more than one data level may be stored at a cell site, to provide even greater storage density.