Display device and driving method of the same
A display device is disclosed. The display device includes a display module including a display panel configured to display an image, a driver configured to drive the display panel, and a timing controller configured to control the driver, and a power supply configured to supply power for driving of the display module. The display module operates in an order of driving preparation configured to operate a basic configuration required for an operation of a device, driving waiting compensation configured to sense at least one gate line for compensation of a driving waiting state of the display panel, and normal driving configured to display an image on the display panel.
1 . A display device comprising:
a display module comprising a display panel configured to display an image, a driver configured to drive the display panel, and a timing controller configured to control the driver and generate a sensing flag; and
a power supply configured to supply power that drives the display module,
wherein the display module operates in an order of a driving preparation configured to operate a basic configuration required for an operation of the display device, a driving waiting compensation configured to sense at least one gate line for compensation of a driving waiting state of the display panel, and a normal driving configured to display an image on the display panel,
wherein the driving preparation occurs after power is applied to the display module and before the driving waiting compensation,
wherein the sensing flag is in an active state during the driving waiting compensation,
wherein the driving waiting compensation includes a process of sensing a threshold voltage of a driving transistor of a sub-pixel connected to the at least one gate line during which a voltage of a source node of the driving transistor rises over time, and
wherein the driving waiting compensation further includes a process of updating, using the sensed threshold voltage, a compensation value for compensating a data voltage to be applied to the driving transistor during the normal driving.
2 . The display device according to claim 1 , wherein the display module performs the driving waiting compensation when the sensing flag defined in the timing controller is in the active state.
3 . The display device according to claim 2 , wherein the display module further performs driving preparation compensation between the driving waiting compensation and the normal driving and sensing all gate lines of the display panel.
4 . The display device according to claim 2 , wherein the sensing flag transitions to an inactive state after execution of the driving waiting compensation.
5 . The display device according to claim 4 , wherein the sensing flag maintains the inactive state during execution of the normal driving.
6 . The display device according to claim 3 , wherein the sensing flag transitions to an inactive state after execution of the driving waiting compensation and the driving preparation compensation.
7 . The display device according to claim 2 , wherein the sensing flag is generated again to have the active state when the display device deviates from a use waiting condition of the display panel.
8 . The display device according to claim 2 , wherein the sensing flag is generated again to have the active state when the display device deviates from an end compensation execution condition of the display panel.
9 . The display device according to claim 1 , wherein the display module further performs end compensation after the normal driving, to compensate for variation of characteristics caused by degradation when the normal driving has been executed.
10 . The display device according to claim 3 , wherein the driving preparation compensation comprises at least one of start compensation and end compensation.