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:
Apr. 07, 2020
Filed:
Mar. 06, 2019
Winbond Electronics Corp., Taichung, TW;
Shang-Rong Wu, Taichung, TW;
Shang-Wen Chang, Taichung, TW;
Winbond Electronics Corp., Taichung, TW;
Abstract
A method for fixing outlier bits is provided in the invention. The method is applied to a memory device, and a memory array of the memory device is divided into a plurality of blocks. The method includes the steps of setting an initial voltage and a terminal voltage of a margin read (MGRD) operation in each block, wherein the initial voltage is set in a distribution of a threshold voltage of each block; finding a MGRD spec corresponding to each block at a range defined by the initial voltage and the terminal voltage; detecting outlier bits in each block according to the MGRD spec corresponding to each block; and fixing the outlier bits in each block.