Backlight device and display unit provided with it
DCFirst Claim
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1. A backlight device comprising:
- a first light source group including one or more light sources that emit visible light and infrared rays;
a second light source group including one or more light sources that emit visible light and infrared rays; and
a drive unit that drives the one or more light sources of said first light source group in response to a first synchronous signal and drives the one or more light sources of said second light source group in response to a second synchronous signal, whereina phase difference between said first synchronous signal and said second synchronous signal is within a range larger than 60 degrees and smaller than 120 degrees or a range larger than 240 degrees and smaller than 300 degrees.
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Abstract
A backlight device is configured from a drive unit and a backlight. The backlight includes a first light source group and a second light source group. The drive unit drives one or more fluorescent lamps of the first light source group in response to a first synchronous signal, and drives one or more fluorescent lamps of the second light source group in response to a second synchronous signal. A phase difference between the first synchronous signal and the second synchronous signal is within a range greater than 60 degrees and smaller than 120 degrees, or a range greater than 240 degrees and smaller than 300 degrees.
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19 Claims
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1. A backlight device comprising:
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a first light source group including one or more light sources that emit visible light and infrared rays; a second light source group including one or more light sources that emit visible light and infrared rays; and a drive unit that drives the one or more light sources of said first light source group in response to a first synchronous signal and drives the one or more light sources of said second light source group in response to a second synchronous signal, wherein a phase difference between said first synchronous signal and said second synchronous signal is within a range larger than 60 degrees and smaller than 120 degrees or a range larger than 240 degrees and smaller than 300 degrees. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A display device comprising:
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a display panel that displays an image; and a backlight device arranged on the back side of said display panel, wherein said backlight device includes; a first light source group including one or more light sources that emit visible light and infrared rays; a second light source group including one or more light sources that emit visible light and infrared rays; and a drive unit that drives the one or more light sources of said first light source group in response to a first synchronous signal and drives the one or more light sources of said second light source group in response to a second synchronous signal, and wherein a phase difference between said first synchronous signal and said second synchronous signal is within a range larger than 60 degrees and smaller than 120 degrees or a range larger than 240 degrees and smaller than 300 degrees. - View Dependent Claims (19)
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Specification