Title:
LIGHT-EMITTING DIODE DRIVER AND ILLUMINATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/114958
Kind Code:
A1
Abstract:
The purpose of the present invention is to reduce residual light from secondary light. A light-emitting diode driver is provided with: an LED (11) comprising an LED chip (13) and a KSF phosphor (15); and a first output circuit (5) and a second output circuit (6) connected to a cathode (11C). When a PWM signal is at "H", the first output circuit performs driving, and an IF flows from the cathode. When the PWM signal is at "L", the first output circuit stops driving, and the offset current flows from the cathode into the second output circuit.
Inventors:
YAMASHITA ATSUSHI
ONOZAKI MANABU
ONO TSUYOSHI
MIYATA MASATAKA
ONOZAKI MANABU
ONO TSUYOSHI
MIYATA MASATAKA
Application Number:
PCT/JP2014/082733
Publication Date:
August 06, 2015
Filing Date:
December 10, 2014
Export Citation:
Assignee:
SHARP KK (JP)
International Classes:
H01L33/00; H01L33/50; H05B37/02; H05B44/00; H05B45/59; H05B45/50
Domestic Patent References:
| WO2012121304A1 | 2012-09-13 |
Foreign References:
| JP2008211071A | 2008-09-11 | |||
| JP2006339507A | 2006-12-14 | |||
| JP2006073656A | 2006-03-16 | |||
| JP2012104814A | 2012-05-31 |
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK (JP)
Patent business corporation HARAKENZO WORLD PATENT & TRADEMARK (JP)
Patent business corporation HARAKENZO WORLD PATENT & TRADEMARK (JP)
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