Display device and method of driving the same
AssigneesSamsung Display Co., Ltd., Iucf-Hyu (Industry-University Cooperation Foundation Hanyang University)
InventorsUng-Gyu Min, Oh-Kyong Kwon
Life of this patent
Estimating the term…
Abstract
A method of driving a display device including a sensing line, a light-emitting element, a capacitor, and a driving transistor, the driving transistor comprising a control terminal that is connected to the capacitor, an input terminal, and an output terminal, the method including: connecting the control terminal and the output terminal; connecting the control terminal and the output terminal to a ground voltage and then disconnecting the control terminal and the output terminal from the ground voltage; sensing a first voltage of the control terminal through the sensing line; and calculating a threshold voltage of the driving transistor based on the first voltage.
Claims15
A method of driving a display device comprising a sensing line, a light-emitting element, a capacitor, and a driving transistor, the driving transistor comprising a control terminal that is connected to the capacitor, an input terminal, and an output terminal, the method comprising:
- connecting the control terminal and the output terminal;
- connecting the control terminal and the output terminal to a ground voltage and then disconnecting the control terminal and the output terminal from the ground voltage;
- sensing a first voltage of the control terminal through the sensing line;
- and
- calculating a threshold voltage of the driving transistor based on the first voltage.
A method of driving a display device comprising a sensing line, a light-emitting element, a capacitor, and a driving transistor, the driving transistor comprising a control terminal that is connected to the capacitor, an input terminal, and an output terminal, the method comprising:
- connecting a data voltage to the control terminal;
- connecting a reference voltage to the sensing line;
- disconnecting the control terminal from the data voltage and supplying an electric current from the output terminal to the light-emitting dement;
- disconnecting the sensing line from the reference voltage and connecting the sensing line to an anode terminal of the light-emitting element;
- cutting off the electric current supply from the output terminal to the light-emitting element;
- sensing an anode voltage of the light-emitting element through the sensing line when the light-emitting element is disconnected from the output terminal;
- and
- calculating a transition degree of a threshold voltage of the light-emitting element by comparing the anode voltage of the light-emitting element with the reference voltage.
Dependencies are inferred from the claim text.