Title:
LIGHT SOURCE DRIVING DEVICE AND IMAGE DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/068738
Kind Code:
A1
Abstract:
A light source driving device (250) is provided with: a signal generation unit (40) which generates a pixel signal corresponding to the grayscale level of pixels constituting an image, on a pixel by pixel unit basis; a light source (51) which emits laser light of an intensity corresponding to the pixel signal; and a signal superimposition unit (60) which superimposes a high frequency signal on a pixel signal input to the light source (51). The high frequency signal has a frequency which is not less than the inverse of a generation period for generation of the pixel signal by the signal generation unit (40), and has a current amplitude equal to the width of a pixel signal drive current value in a region of the I-L characteristic of the light source (51) in which LED emitted light and LD emitted light are mixed. The signal superimposition unit (60) superimposes the high frequency signal on the pixel signal at least when the pixel signal drive current value is in the abovementioned region.
Inventors:
WAGATSUMA YOSHIAKI (JP)
Application Number:
PCT/JP2016/003032
Publication Date:
April 27, 2017
Filing Date:
June 23, 2016
Export Citation:
Assignee:
JVC KENWOOD CORP (JP)
International Classes:
H01S5/068; G02B26/10; G09G3/02
Domestic Patent References:
| WO2014162414A1 | 2014-10-09 |
Foreign References:
| JP2011075957A | 2011-04-14 | |||
| JP2007286139A | 2007-11-01 | |||
| JP2010276742A | 2010-12-09 | |||
| JP2013015738A | 2013-01-24 | |||
| JP2000261073A | 2000-09-22 |
Attorney, Agent or Firm:
IEIRI, Takeshi (JP)
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