Title:
発光ダイオード駆動装置
Document Type and Number:
Japanese Patent JP4586905
Kind Code:
B2
Abstract:
A light emitting diode driving apparatus includes: a switching converter having an inductor and a switching device; a plurality of serial light emitting diode lines each having a plurality of light emitting diodes connected in series; a plurality of rectifier diodes respectively connected in series to the plurality of serial light emitting diode lines; a plurality of capacitors respectively connected to nodes between the serial light emitting diode lines and the rectifier diodes for smoothing a voltage; and one or more current distribution coils disposed between the switching converter and the plurality of serial light emitting diode lines to let a current flow in a direction of canceling out a magnetic flux generated by a first winding and a magnetic flux generated by a second winding each other, thereby making currents flowing in the serial light emitting diode lines equal to each other.
Inventors:
Mitsuru Yamane
Yoshiki Oyama
Yoshiki Oyama
Application Number:
JP2008208697A
Publication Date:
November 24, 2010
Filing Date:
August 13, 2008
Export Citation:
Assignee:
ソニー株式会社
International Classes:
H01L33/00
Domestic Patent References:
| JP2006319221A | ||||
| JP2006352116A | ||||
| JP2004335443A | ||||
| JP2007507855A |
Attorney, Agent or Firm:
Atsuo Waki
Nobuo Suzuki
Nobuo Suzuki