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:
Jul. 14, 2020
Filed:
Feb. 20, 2019
Powerchip Semiconductor Manufacturing Corporation, Hsinchu, TW;
Tomofumi Kitani, Tokyo, JP;
Powerchip Semiconductor Manufacturing Corporation, Hsinchu, TW;
Abstract
A page buffer circuit includes a latch circuit that temporarily stores data when data is written in or read out from a memory cell through a bit line, the page buffer circuit is configured using a switched capacitor circuit. The page buffer circuit includes a first capacitor connected to a sense terminal connected to one end of the latch circuit, a second capacitor connected to the bit line, a first switch interposed between the sense terminal and the second capacitor, a second switch interposed between the sense terminal and a supply voltage, a first transistor including a control terminal and a first element terminal connected to both terminals of the first switch in parallel, a second transistor including first and second element terminals connected between a second element terminal of the first transistor and a ground, and a control circuit controlling the first and second switches and the second transistor.