Display device and driving method thereof
AssigneeLG Display Co., Ltd.
InventorsMyung Kook MOON, Hae Jong JANG
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Abstract
The present disclosure relates to a display device and a driving method thereof, wherein a refresh rate of pixels is controlled at a reference frame frequency in a normal driving mode, and the refresh rate of the pixels is controlled at a frequency lower than the reference frame frequency in a low speed driving mode. In the low speed driving mode, park data is transmitted to a data driving circuit during at least one vertical blank period.
Claims20
A display device, comprising:
- a pixel array in which a plurality of data lines, a plurality of gate lines overlapping the data lines, and a plurality of pixels are arranged;
- a data driving circuit configured to convert pixel data to a data voltage and convert park data to a park voltage;
- a gate driving circuit configured to sequentially supply gate signals to the respective gate lines;
- and
- a timing controller configured to transmit the park data to the data driving circuit,
- wherein each of the pixels includes sub-pixels having different colors,
- wherein the gate signal includes a scan signal and a light emitting control signal,
- each of the sub-pixels includes:
- a light-emitting element;
- a driving element for driving the light-emitting element by supplying current to the light-emitting element;
- and
- is operative when a first switch element turned on based on a gate-on voltage of the scan signal to couple the data line to a first electrode of the driving element, and
- during a time when the first switch element is turned off, the park voltage is applied to the data lines.
A method of driving a display device including a pixel array in which a plurality of data lines, a plurality of gate lines overlapping the data lines, and a plurality of pixels are arranged, comprising:
- controlling a refresh rate of the pixels at a reference frame frequency in a normal driving mode;
- controlling a refresh rate of the pixels at a frequency lower than the reference frame frequency in a low speed driving mode;
- transmitting park data to a data driving circuit in the low speed driving mode;
- converting the park data to a park voltage;
- supplying the park voltage to the data lines,
- turning a switch element that is electrically connected to a corresponding data line of the plurality of data lines into an off state;
- applying the park voltage to the plurality of pixels while the switch element that is electrically connected to a corresponding data line in each of the pixels is in the off state.
Dependencies are inferred from the claim text.