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:
Dec. 01, 1998
Filed:
Jul. 15, 1996
Sung Ho Cho, Kyungki-Do, KR;
LG Semicon Co., Ltd., Cheongju, KR;
Abstract
An improved burn-in sensing circuit for a semiconductor device generates a signal for indicating a start of a burn-in mode when an external voltage exceeds a predetermined level of a logic threshold voltage. The circuit obtains a desired hysteresis characteristic between a burn-in entry voltage and a burn-in exit voltage by lowering a level of the logic threshold voltage, and includes an external voltage sensor for dropping and outputting an external voltage in accordance with a bias voltage applied thereto. A burn-in signal generator of the circuit generates a predetermined level of a burn-in signal, and feeds back the predetermined level of a burn-in signal to lower the logic threshold voltage when a predetermined level of dropped voltage is higher than its logic threshold voltage.