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:
Apr. 10, 2018
Filed:
Apr. 06, 2016
Applicant:
United Microelectronics Corp., Hsin-Chu, TW;
Inventor:
Po-Wei Tsou, Taoyuan, TW;
Assignee:
UNITED MICROELECTRONICS CORP., Hsin-Chu, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 1/20 (2006.01); G01R 31/26 (2014.01);
U.S. Cl.
CPC ...
G01R 1/206 (2013.01); G01R 31/2639 (2013.01);
Abstract
A test circuit includes a pull-up device, a pull-down device, a switch circuit and a voltage-setting unit. The pull-up device is used to receive a first control signal and coupled to a first end of the device-under-test. The pull-down device is used to receive a second control signal and coupled to the first end of the device-under-test. The switch unit is controlled by a switch signal, used to receive a testing signal and coupled to a second end of the device-under-test. The voltage-setting unit is controlled by a third control signal, used to pull the second end of the device-under-test to a predetermined voltage.