Title:
A drive method of a luminescent device and a luminescent device
Document Type and Number:
Japanese Patent JP6175229
Kind Code:
B2
Abstract:
Reduction of luminance dispersion of a plurality of light-emitting panels combined into one light-emitting device is achieved by the use of a new light-emitting device which has a photosensor, a plurality of light-emitting panels, DC/DC converters connected to their respective light-emitting panels, and a control circuit configured to control output currents of the DC/DC converters in accordance with illuminance data acquired with the photosensor. The control circuit successively turns on the plurality of light-emitting panels, and controls the output currents of the DC/DC converters in accordance with differences of the illuminance data acquired with the photosensor when the light-emitting panels are turned on.
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Inventors:
Kei Takahashi
Application Number:
JP2012259357A
Publication Date:
August 02, 2017
Filing Date:
November 28, 2012
Export Citation:
Assignee:
Semiconductor Energy Laboratory Co., Ltd.
International Classes:
H05B37/02; H05B44/00; H01L51/50
Domestic Patent References:
| JP2008009416A | ||||
| JP2008010852A | ||||
| JP2011078218A | ||||
| JP2004519826A |
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