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:
Sep. 10, 2019
Filed:
Feb. 23, 2017
Pdf Solutions, Inc., San Jose, CA (US);
Yih-Yuh Doong, Zhubei, TW;
Chao-Hsiung Lin, Zhubei, TW;
Sheng-Che Lin, BaoShan Township, TW;
Shihpin Kuo, Tainan, TW;
Tzupin Shen, Hsinchu, TW;
Chia-Chi Lin, Hsinchu, TW;
Kimon Michaels, Monte Sereno, CA (US);
PDF SOLUTIONS, INC., Santa Clara, CA (US);
Abstract
A memory-specific implementation of a test and characterization vehicle utilizes a design layout that is a modified version of the product mask. Specific routing is used to modify the product mask in order to facilitate memory cell characterization. This approach can be applied to any memory architecture with word-line and bit-line perpendicular or substantially perpendicular to each other, including but not limited to, volatile memories such as Static Random Access Memory (SRAM), Dynamic RAM (DRAM), non-volatile memory such as NAND Flash (including three-dimensional NAND Flash), NOR Flash, Phase-change RAM (PRAM), Ferroelectric RAM (FeRAM), Correlated electron RAM (CeRAM), Magnetic RAM (MRAM), Resistive RAM (RRAM), XPoint memory and the like.