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. 12, 2009
Filed:
Jun. 17, 2005
Soo-ho Shin, Gyeonggi-do, KR;
Jin-woo Lee, Gyeonggi-do, KR;
Eun-cheol Lee, Gyeonggi-do, KR;
Samsung Electronics Co., Ltd., Suwon-si, Gyeonggi-do, KR;
Abstract
According to some embodiments of the invention, a method of forming a transistor includes forming a device isolation layer in a semiconductor substrate. The device isolation layer is formed to define at least one active region. A channel region is formed in a predetermined portion of the active region of the semiconductor substrate. Two channel portion holes are formed to extend downward from a main surface of the semiconductor substrate to be in contact with the channel region. Gate patterns fill the channel portion holes and cross the active region. The resulting transistor is capable of ensuring a constant threshold voltage without being affected by an alignment state of the channel portion hole and the gate pattern.