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. 19, 2009
Filed:
Aug. 15, 2007
Chung Kuang Chen, Pan Chiao, TW;
Chun-hsiung Hung, Hsinchu, TW;
Yi-te Shih, Hsinchu, TW;
Macronix International Co., Ltd., Hsinchu, TW;
Abstract
A shielding circuit for preventing a sense current of a target cell from the influence of a source current of first adjacent cell includes a pre-discharge device, first and second biasing units, first and second voltage pull-down units, and a connection units. The pre-discharge device is for setting the voltage of the sense node to a negative voltage. The first and second biasing units are for biasing the source voltage of the target and the first adjacent cell equal to a biasing voltage, respectively. The first and second voltage pull-down units are for pulling down the source voltage of the target and the first adjacent cell closing to a ground level, respectively. The connection unit is for receiving and outputting the sense current passing through the first biasing unit to the sense node.