Display device and method of driving the same
AssigneeSamsung Display Co., Ltd.
InventorKyung-Hun Lee
Life of this patent
Estimating the term…
Abstract
A display device includes a display panel including pixels, a power management circuit configured to provide a voltage to the display panel through a power voltage line, and configured to decrease the voltage when a power current of the display panel flowing through the power voltage line is greater than a reference current, and a controller configured to control the power management circuit, and including a panel degradation calculator configured to calculate a panel degradation amount of the display panel, a maximum power current calculator configured to calculate a maximum power current of the display panel based on the panel degradation amount, and a reference current calculator configured to calculate the reference current by multiplying the maximum power current by a gain.
Claims20
A display device comprising:
- a display panel comprising pixels;
- a power management circuit configured to provide a voltage to the display panel through a power voltage line, and configured to decrease the voltage when a power current of the display panel flowing through the power voltage line is greater than a reference current;
- and
- a controller configured to control the power management circuit, and comprising:
- a panel degradation calculator configured to calculate a panel degradation amount of the display panel;
- a maximum power current calculator configured to calculate a maximum power current of the display panel based on the panel degradation amount;
- and
- a reference current calculator configured to calculate the reference current by multiplying the maximum power current by a gain.
A method of driving a display device, the method comprising:
- calculating a panel degradation amount of a display panel comprising pixels;
- calculating a maximum power current of the display panel based on the panel degradation amount;
- calculating a reference current by multiplying the maximum power current by a gain;
- and
- decreasing a voltage of the display panel when a power current of the display panel is greater than the reference current.
Dependencies are inferred from the claim text.