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:
Oct. 05, 2021
Filed:
Nov. 12, 2019
Sapien Semiconductors Inc., Ulsan, KR;
Jae Hoon Lee, Busan, KR;
Jin Woong Jang, Suwon-Si, KR;
SAPIEN SEMICONDUCTORS INC., Ulsan, KR;
Abstract
The present specification discloses a light-emitting diode (LED) driving apparatus in which a voltage drop phenomenon due to a common impedance is mitigated. In the LED driving apparatus according to the present specification, a circuit is configured by combining N-type metal-oxide-semiconductor (NMOS) transistors or P-type MOS (PMOS) transistors such that a positive power source or a negative power source is not connected to a source terminal of a metal oxide semiconductor field-effect transistor (MOSFET). To this end, it is possible to eliminate common impedance effects on the positive power source or the negative power source.