Display device
View Patent ↗A display device includes: a display unit including pixels arranged in a matrix therein, each of the pixels including a first sub-pixel that displays a first color component, a second sub-pixel that displays a second color component, a third sub-pixel that displays a third color component, and a fourth sub-pixel that displays a fourth color component; and a signal processing unit that receives input signals that are capable of being displayed with the first sub-pixel, the second sub-pixel, and the third sub-pixel, and calculates output signals to the first, second, third, and fourth sub-pixels. The signal processing unit generates converted input signals with changed saturation among the input signals. The signal processing unit calculates output signals to the first sub-pixel, the second sub-pixel, and the third sub-pixel based on the converted input signals and an amount of increase in brightness caused by the fourth sub-pixel.
1. A display device comprising:
a display unit including pixels arranged in a matrix therein, each of the pixels including,
a first sub-pixel that displays a first color component,
a second sub-pixel that displays a second color component,
a third sub-pixel that displays a third color component, and
a fourth sub-pixel that displays a fourth color component different from the first sub-pixel, the second sub-pixel, and the third sub-pixel; and
a signal processing unit that receives input signals that are capable of being displayed with the first sub-pixel, the second sub-pixel, and the third sub-pixel, and calculates output signals to the first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel, wherein
the signal processing unit generates converted input signals with changed saturation among the input signals, the converted input signals being obtained by multiplying a saturation S of the input signals, which is given by the following expression (1), by a gain value Sgain, which is given by the following expression (2):
S =(Max−Min)/Max (1),
S gain=( S param−1)×Min+1 (2)
where a maximum value of the brightness of the input signals is denoted as Max, a minimum value of the brightness of the input signals is denoted as Min, and a set value Sparam is given such that 0≦Sparam<1, and
the signal processing unit calculates output signals to the first sub-pixel, the second sub-pixel, and the third sub-pixel based on the converted input signals and an amount of increase in brightness caused by the fourth sub-pixel.
2. A display device comprising:
a display unit including pixels arranged in a matrix therein, each of the pixels including,
a first sub-pixel that displays a first color component,
a second sub-pixel that displays a second color component,
a third sub-pixel that displays a third color component, and
a fourth sub-pixel that displays a fourth color component different from the first sub-pixel, the second sub-pixel, and the third sub-pixel; and
a signal processing unit that receives input signals that are capable of being displayed with the first sub-pixel, the second sub-pixel, and the third sub-pixel, and calculates output signals to the first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel, wherein
the signal processing unit generates converted input signals with changed saturation among the input signals, the converted input signals being obtained by multiplying a saturation S of the input signals, which is given by the following expression (1), by a gain value Sgain, which is given by the following expression (2):
S =(Max−Min)/Max (1),
S gain= S param−[1−(Max−Min)] (2),
where a maximum value of the brightness of the input signals is denoted as Max, a minimum value of the brightness of the input signals is denoted as Min, and a set value Sparam is given such that 0≦Sparam<1, and
the signal processing unit calculates output signals to the first sub-pixel, the second sub-pixel, and the third sub-pixel based on the converted input signals and an amount of increase in brightness caused by the fourth sub-pixel.
3. A display device comprising:
a display unit including pixels arranged in a matrix therein, each of the pixels including,
a first sub-pixel that displays a first color component,
a second sub-pixel that displays a second color component,
a third sub-pixel that displays a third color component, and
a fourth sub-pixel that displays a fourth color component different from the first sub-pixel, pixel, the second sub-pixel, and the third sub-pixel; and
a signal processing unit that receives input signals that are capable of being displayed with the first sub-pixel, the second sub-pixel, and the third sub-pixel, and calculates output signals to the first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel, wherein
the signal processing unit generates converted input signals with changed saturation among the input signals, the converted input signals being obtained by multiplying a saturation S of the input signals, which is given by the following expression (1), by a gain value Sgain, which is given by the following expression (2):
S =(Max−Min)/Max (1),
S gain=( S param−1)×Min+1 (2),
where a minimum value of the brightness of the input signals is denoted as Min and a set value Sparam is given such that 1<Sparam, and
the signal processing unit calculates output signals to the first sub-pixel, the second sub-pixel, and the third sub-pixel based on the converted input signals and an amount of increase in brightness caused by the fourth sub-pixel.
4. A display device comprising:
a display unit including pixels arranged in a matrix therein, each of the pixels including,
a first sub-pixel that displays a first color component,
a second sub-pixel that displays a second color component,
a third sub-pixel that displays a third color component, and
a fourth sub-pixel that displays a fourth color component different from the first sub-pixel, the second sub-pixel, and the third sub-pixel; and
a signal processing unit that receives input signals that are capable of being displayed with the first sub-pixel, the second sub-pixel, and the third sub-pixel, and calculates output signals to the first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel, wherein
the signal processing unit generates converted input signals with changed saturation among the input signals, the converted input signals being obtained by multiplying a saturation S of the input signals, which is given by the following expression (1), by a gain value Sgain, which is given by the following expression (2):
S =(Max−Min)/Max (1),
S gain= S param−[1−(Max−Min)] (2),
where a maximum value of the brightness of the input signals is denoted as Max, a minimum value of the brightness of the input signals is denoted as Min, and a set value Sparam is given such that 1<Sparam, and
the signal processing unit calculates output signals to the first sub-pixel, the second sub-pixel, and the third sub-pixel based on the converted input signals and an amount of increase in brightness caused by the fourth sub-pixel.