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:
Jul. 23, 1991
Filed:
Oct. 05, 1989
Dong-sun Min, Seoul, KR;
Hoon Choi, Taegu, KR;
Abstract
A semiconductor substrate bias circuit is disclosed which comprises: first and second substrate biasing means connected in parallel between the substrate and a ground node, for pumping the charges from said substrate to said ground node or in the reverse direction in order to bias said substrate; and a detecting means for selectively enabling said first and second substrate biasing means in accordance with the levels of the substrate bias voltage. The circuit of the present invention is capable of supplying adequate bias voltages depending on the various operating modes, reducing the standby current loss at a standby state, and is suitable for being installed on a VLSI semiconductor chip.