DISPLAY DEVICE WITH A BACKLIGHT
First Claim
1. A display device comprisingan image display unit (2) configured to display an image,a backlight (6) comprising at least one group (4) of light emitting sources arranged on a substrate (3), said at least one group (4) comprising at least a red (R), a green (G), a blue (B) and a white (W) light emitting source, anda backlight control unit (7) configured to:
- identify red, green and blue specific drive levels (Rspec, Gspec, Bspec) for the red, green and blue light sources in said at least one group (4) of light emitting sources,set a white drive level (Wdrive) for said at least one white light source in said at least one group (4) in dependence of the red, green and blue specific drive levels, andgenerating red, green and blue actual drive levels (R, G, B) from the red, green and blue specific drive levels (Rspec, Gspec, Bspec) and the white drive level.
1 Assignment
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Accused Products
Abstract
A display device comprises an image display unit (2) configured to display an image, a backlight (6) comprising at least one group of light emitting sources arranged on a substrate (3), said group comprising at least a red, a green, a blue and a white light emitting source, and backlight control means (7). The backlight control means are configured to identify respective specific drive levels of the red, green and blue light sources, select a drive level for the white light source in dependence thereof and generate actual drive levels of the red, green and blue light sources.
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Citations
11 Claims
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1. A display device comprising
an image display unit (2) configured to display an image, a backlight (6) comprising at least one group (4) of light emitting sources arranged on a substrate (3), said at least one group (4) comprising at least a red (R), a green (G), a blue (B) and a white (W) light emitting source, and a backlight control unit (7) configured to: -
identify red, green and blue specific drive levels (Rspec, Gspec, Bspec) for the red, green and blue light sources in said at least one group (4) of light emitting sources, set a white drive level (Wdrive) for said at least one white light source in said at least one group (4) in dependence of the red, green and blue specific drive levels, and generating red, green and blue actual drive levels (R, G, B) from the red, green and blue specific drive levels (Rspec, Gspec, Bspec) and the white drive level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 11)
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10. A method of controlling a backlight device (6) in a display device (1) comprising an image display unit (2), said backlight device (6) comprising at least one group (4) of light emitting sources arranged on a substrate (3), said at least one group (4) comprising at least a red (R), a green (G), a blue (B) and a white (W) light emitting source, said method comprising the steps of:
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identifying (301) red, green and blue specific drive levels (Rspec, Gspec, Bspec) for the red, green and blue light sources in said at least one group (4) of light emitting sources, setting (302) a white drive level (Wdrive) for said at least one white light source in said at least one group (4) in dependence of the red, green and blue specific drive levels, and generating (303) red, green and blue actual drive levels (R, G, B) from the red, green and blue specific drive levels (Rspec, Gspec, Bspec) and the white drive level.
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Specification