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:
Jan. 06, 2009
Filed:
Jan. 04, 2007
Dong-hak Shin, Hwaseong-si, KR;
Dong-Hak Shin, Hwaseong-si, KR;
Abstract
A semiconductor memory device includes a row decoder, a control circuit, and a memory cell array having an open bit-line structure. The memory cell array includes a plurality of word lines coupled to the row decoder, a plurality of bit lines, a plurality of memory cells, a plurality of sense amplifier blocks, and a plurality of burn-in voltage supply lines coupled to the plurality of sense amplifier blocks in a predetermined order, respectively. The control circuit controls the row decoder and the memory cell array for performing a burn-in test. During the burn-in test, the burn-in voltage supply lines are provided with at least two different burn-in voltages. The burn-in voltage supply lines respectively coupled to the sense amplifier blocks that are adjacent to each other are provided with different burn-in voltages during the burn-in test.