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. 02, 2021
Filed:
Feb. 23, 2018
Applicant:
Iml International, Grand Cayman, KY;
Inventor:
Alberto Viviani, Mountain View, CA (US);
Assignee:
IML International, Grand Cayman, KY;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 45/37 (2020.01); G02F 1/13357 (2006.01); H05B 45/46 (2020.01);
U.S. Cl.
CPC ...
H05B 45/37 (2020.01); G02F 1/133603 (2013.01); H05B 45/46 (2020.01);
Abstract
A backlight driver includes current sources that are connected between LED strings and a number of bias voltages. There can be any number of different bias voltages, each at a ground potential or higher voltage. The bias voltage is selected for a particular LED string in order to reduce a current drop across the current source. This reduces the power consumption of the current source and LED string. Heat dissipation is also reduced.