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:
Aug. 21, 2012
Filed:
Oct. 31, 2008
Young Jin Lee, Seoul, KR;
Joong Kon Son, Seoul, KR;
Hyung Kun Kim, Gyunggi-do, KR;
Jung Ja Yang, Gyunggi-do, KR;
Grigory Onushkin, Gyunggi-do, KR;
Young Jin Lee, Seoul, KR;
Joong Kon Son, Seoul, KR;
Hyung Kun Kim, Gyunggi-do, KR;
Jung Ja Yang, Gyunggi-do, KR;
Grigory Onushkin, Gyunggi-do, KR;
Samsung LED Co., Ltd., Gyungg-do, KR;
Abstract
There is provided an LED driving circuit. The LED driving circuit according to an aspect of the invention may include: at least one ladder circuit including: (n−1) number (here, n is a positive integer satisfying n≧2) of first branches provided between first and second junction points, and connected in-line with each other by n number of first middle junction points, (n−1) number of second branches arranged in parallel with the first branches, and connected in-line with each other by n number of second middle junction points between the first and second junction points, and n number of middle branches connecting m-th first and second middle junction points to each other, wherein at least one LED device is disposed on each of the first, second, and middle branches. Here, the number of LED devices included in each of the first and second branches is greater than the number of LED devices included in each of the middle branches.