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:
Mar. 08, 2011
Filed:
Jun. 29, 2009
Jun Rye Rho, Seoul, KR;
Cheul Hee Koo, Gyeonggi-do, KR;
Jun Rye Rho, Seoul, KR;
Cheul Hee Koo, Gyeonggi-do, KR;
Hynix Semiconductor Inc., Gyeonggi-do, KR;
Abstract
A page buffer circuit comprises a sense unit, a latch unit, and a bit line voltage control unit. The sense unit is configured to couple a bit line and a sense node in response to a sense control signal in response to the sense control signal. The latch unit includes a plurality of latch circuits configured to latch data programmed or to be programmed. The bit line voltage control unit is configured to classify program states of memory cells, coupled to the selected bit line, into first to ngroups by performing first to nverification operations after a first program operation of a program operation and is configured to control a voltage level of the sense control signal in order to transfer a bit line voltage to the selected bit line.