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:
Aug. 11, 2020
Filed:
Dec. 06, 2018
Macronix International Co., Ltd., Hsinchu, TW;
Wei-Liang Lin, Taipei, TW;
Chun-Chang Lu, Yunlin, TW;
Wen-Jer Tsai, Hualien, TW;
Guan-Wei Wu, Kaohsiung, TW;
Yao-Wen Chang, Hsinchu, TW;
MACRONIX INTERNATIONAL CO., LTD., Hsinchu, TW;
Abstract
A programming operation for high density memory, like 3D NAND flash memory, modifies the waveforms applied during program operations to mitigate unwanted disturbance of memory cells not selected for programming during the operation. Generally, the method provides for applying a bias arrangement during an interval of time between program verify pass voltages and program pass voltages in a program sequence that can include a soft ramp down, and pre-turn-on voltages designed to reduce variations in the potential distribution on floating channels of unselected NAND strings during a program operation.