Display device and method for controlling display device
View Patent ↗According to one embodiment, a display device displays an n−1 th frame (n is an integer which is greater than or equal 2) and an n th frame in this order. The display device includes a display panel, calculator, adjuster, and controller. The calculator calculates power consumption of the n−1 th frame. The adjuster determines whether or not the n th frame is brighter than the n−1 th frame, and adjusts brightness of the n th frame based on a brightness adjustment magnification of the n th frame calculated based on the power consumption of the n−1 th frame and a decreasing function, when the n th frame is not brighter than the n−1 th frame. The controller stops light emission with an arbitrary timing when the n th frame is displayed, when the n th frame is brighter than the n−1 th frame.
1. A display device displaying an n−1 th frame (n is an integer which is greater than or equal to 2) and an n th frame included in display data in this order, comprising:
a display panel which displays an image based on the display data;
a power consumption calculator which calculates power consumption of the n−1 th frame;
a brightness adjuster which determines whether or not the n th frame is brighter than the n−1 th frame, and adjusts brightness of the n th frame based on a brightness adjustment magnification of the n th frame calculated based on the power consumption of the n−1 th frame and a decreasing function which represents a relationship in which the brightness adjustment magnification decreases as the power consumption increases, when the n th frame is not brighter than the n−1 th frame; and
a timing controller which stops light emission with an arbitrary timing when the n th frame is displayed, when the n th frame is brighter than the n−1 th frame, wherein
the brightness adjuster determines whether or not a difference between the brightness of the n th frame and brightness of the n−1 th frame exceeds a threshold value, when the n th frame is brighter than the n−1 th frame, and
the timing controller stops light emission of the n th frame based on a timing determined based on the difference, when the difference exceeds the threshold value.
2. The display device of claim 1 , wherein
the brightness adjuster determines whether or not the n th frame is brighter than the n−1 th frame, based on brightness of the n−1 th frame and the brightness of the n th frame.
3. The display device of claim 1 , wherein
the display panel displays the n th frame adjusted by the brightness adjuster, when the difference does not exceed the threshold value.
4. The display device of claim 1 , wherein
the power consumption calculator calculates the power consumption of the n−1 th frame and power consumption of the n th frame, and
the brightness adjuster determines whether or not the n th frame is brighter than the n−1 th frame, based on the power consumption of the n−1 th frame and the power consumption of the n th frame.
5. The display device of claim 1 , wherein
the power consumption calculator calculates the power consumption of the n−1 th frame and power consumption of the n th frame,
the brightness adjuster determines whether or not the power consumption of the n th frame exceeds a threshold value, when the n th frame is brighter than the n−1 th frame, and
the timing controller stops light emission of the n th frame, when the power consumption of the n th frame exceeds the threshold value.
6. The display device of claim 1 , wherein
the power consumption calculator calculates the power consumption of the n−1 th frame and power consumption of the n th frame, and
the brightness adjuster determines whether or not a difference between the power consumption of the n th frame and the power consumption of the n−1 th frame exceeds a threshold value, when the n th frame is brighter than the n−1 th frame.
7. The display device of claim 1 , wherein
the power consumption calculator calculates the power consumption of the n−1 th frame and power consumption of the n th frame,
the brightness adjuster determines whether or not a difference between the power consumption of the n th frame and the power consumption of the n−1 th frame exceeds a threshold value, when the n th frame is brighter than the n−1 th frame, and
the display panel displays the n th frame adjusted by the brightness adjuster, when the difference does not exceed the threshold value.
8. The display device of claim 1 , wherein
the display data includes the n−1 th frame, the n th frame, and an n+1 th frame,
the power consumption calculator calculates the power consumption of the n−1 th frame and power consumption of the n th frame,
the brightness adjuster estimates the brightness of the n th frame and brightness of the n+1 th frame based on brightness of the n−1 th frame and an inclination at which the power consumption of the n th frame increases, when the n th frame is brighter than the n−1 th frame, and determines whether or not a difference in brightness obtained by subtracting the estimated brightness of the n+1 th frame from the estimated brightness of the n th frame is smaller than a threshold value for the difference in brightness, and
the timing controller does not stop light emission when the n th frame is displayed, when the difference in brightness is smaller than the threshold value for the difference in brightness.
9. A method for controlling a display device displaying an n−1 th frame (n is an integer which is greater than or equal to 2) and an n th frame included in display data on a display panel in this order, comprising:
calculating power consumption of the n−1 th frame;
determining whether or not the n th frame is brighter than the n−1 th frame, and adjusting brightness of the n th frame based on a brightness adjustment magnification of the n th frame calculated based on the power consumption of the n−1 th frame and a decreasing function which represents a relationship in which the brightness adjustment magnification decreases as the power consumption increases, when the n th frame is not brighter than the n−1 th frame; and
stopping light emission with an arbitrary timing when the n th frame is displayed, when the n th frame is brighter than the n−1 th frame, wherein
the determining comprises determining whether or not a difference between the brightness of the n th frame and brightness of the n−1 th frame exceeds a threshold value, when the n th frame is brighter than the n−1 th frame, and
the stopping comprises stopping light emission of the n th frame based on a timing determined based on the difference, when the difference exceeds the threshold value.
10. The method of claim 9 , wherein
the determining comprises determining whether or not the n th frame is brighter than the n−1 th frame, based on brightness of the n−1 th frame and the brightness of the n th frame.
11. The method of claim 9 , wherein
the method further comprises displaying the adjusted n th frame on the display panel, when the difference does not exceed the threshold value.
12. The method of claim 9 , wherein
the calculating comprises calculating the power consumption of the n−1 th frame and power consumption of the n th frame, and
the determining comprises determining whether or not the n th frame is brighter than the n−1 th frame, based on the power consumption of the n−1 th frame and the power consumption of the n th frame.
13. The method of claim 9 , wherein
the calculating comprises calculating the power consumption of the n−1 th frame and power consumption of the n th frame,
the determining comprises determining whether or not the power consumption of the n th frame exceeds a threshold value, when the n th frame is brighter than the n−1 th frame, and
the stopping comprises stopping light emission of the n th frame, when the power consumption of the n th frame exceeds the threshold value.
14. The method of claim 9 , wherein
the calculating comprises calculating the power consumption of the n−1 th frame and power consumption of the n th frame, and
the determining comprises determining whether or not a difference between the power consumption of the n th frame and the power consumption of the n−1 th frame exceeds a threshold value, when the n th frame is brighter than the n−1 th frame.
15. The method of claim 9 , wherein
the calculating comprises calculating the power consumption of the n−1 th frame and power consumption of the n th frame,
the determining comprises determining whether or not a difference between the power consumption of the n th frame and the power consumption of the n−1 th frame exceeds a threshold value, when the n th frame is brighter than the n−1 th frame, and
the method further comprises displaying the adjusted n th frame on the display panel, when the difference does not exceed the threshold value.
16. The method of claim 9 , wherein
the display data includes the n−1 th frame, the n th frame, and an n+1 th frame,
the calculating comprises calculating the power consumption of the n−1 th frame and power consumption of the n th frame,
the determining comprises estimating the brightness of the n th frame and brightness of the n+1 th frame based on brightness of the n−1 th frame and an inclination at which the power consumption of the n th frame increases, when the n th frame is brighter than the n−1 th frame, and determining whether or not a difference in brightness obtained by subtracting the estimated brightness of the n+1 th frame from the estimated brightness of the n th frame is smaller than a threshold value for the difference in brightness, and
the stopping does not stop light emission when the n th frame is displayed, when the difference in brightness is smaller than the threshold value for the difference in brightness.