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. 22, 2005
Filed:
Dec. 18, 2002
Hyun Joo Hwang, Kyonggi-do, KR;
Hyun Joo Hwang, Kyonggi-do, KR;
Mirae Corporation, Chungchongnam-Do, KR;
Abstract
An apparatus and method are provided for recognizing a working height of a device transfer system in a semiconductor device test handler which allows the working height of the device transfer system to be quickly measured and/or precisely reset. The device transfer system moves horizontally and vertically on a handler body of the semiconductor device test handler, and moves horizontally and vertically, and includes a plurality of pickers which pick up the semiconductor devices. An elevating block installed at one side of the device transfer system moves upward and downward, and a touch probe installed vertical relative to the elevating block moves upward and downward based on contact with a target object. A detector detects ascendance of the touch probe upon contact with the target object, and a working position is determined based on an initial position, a measured position, and a series of offset values.