Title:
LIGHT-EMITTING ELEMENT DRIVING DEVICE, LIGHT-EMITTING DEVICE, AND VEHICLE
Document Type and Number:
WIPO Patent Application WO/2016/059954
Kind Code:
A1
Abstract:
A light-emitting element driving device having: a reset signal generation unit that generates a reset signal in accordance with the current flowing in a light-emitting element; a set signal generation unit that generates a set signal in accordance with the anode voltage of the light-emitting element; and an output voltage supply unit that, in accordance with the reset signal and the set signal, generates an output voltage from an input voltage, and supplies the output voltage to the light-emitting element. The set signal generation unit has: a current generation unit that generates a current in accordance with the anode voltage of the light-emitting element; a charging unit that charges the current generated by the current generation unit; and a comparator that generates the set signal in accordance with the result of a comparison of a reference voltage and the charging voltage of the charging unit.
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Inventors:
KAWASE SHIGENORI (JP)
TAKAGIMOTO SHINSUKE (JP)
NAKATANI YOSHIYUKI (JP)
TAKAGIMOTO SHINSUKE (JP)
NAKATANI YOSHIYUKI (JP)
Application Number:
PCT/JP2015/077016
Publication Date:
April 21, 2016
Filing Date:
September 25, 2015
Export Citation:
Assignee:
ROHM CO LTD (JP)
International Classes:
H05B37/02; B60Q1/00; H01L33/00; H05B44/00
Foreign References:
| JP2009283401A | 2009-12-03 | |||
| JP2012174649A | 2012-09-10 | |||
| JP2010273447A | 2010-12-02 | |||
| JP2013157238A | 2013-08-15 | |||
| JP2003332091A | 2003-11-21 |
Other References:
See also references of EP 3209095A4
Attorney, Agent or Firm:
SANO PATENT OFFICE (JP)
Patent business corporation Sano patent firm (JP)
Patent business corporation Sano patent firm (JP)
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