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:
May. 15, 2012
Filed:
Sep. 17, 2009
Applicants:
Tzu-hsuan Hsu, Chiayi, TW;
Ming-hsiu Lee, Hsinchu, TW;
Chao-i Wu, Tainan, TW;
Ming-chang Kuo, Changhua, TW;
Inventors:
Tzu-Hsuan Hsu, Chiayi, TW;
Ming-Hsiu Lee, Hsinchu, TW;
Chao-I Wu, Tainan, TW;
Ming-Chang Kuo, Changhua, TW;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 21/336 (2006.01);
U.S. Cl.
CPC ...
Abstract
A memory array comprising vertical memory cells does not require any isolation layers between cells. Thus, a very compact, high density memory array can be achieved. Each memory cell in the memory array is configured to store 4 bits of data per cell. Multi-level charge techniques can be used to increase the number of bit per cell and achieve further increased density for the memory array.