Display device and driving method thereof
AssigneeLG Display Co., Ltd.
InventorsMyung Kook Moon, Hae Jong Jang
Life of this patent
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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.
Claims14
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:
- control a refresh rate of the pixels at a reference frame frequency in a normal driving mode and the refresh rate of the pixels at a frequency lower than the reference frame frequency in a low speed driving mode, and
- transmit the park data to the data driving circuit during at least one vertical blank period in the low speed driving mode,
- wherein the park voltage is applied to all pixels of the pixel array at a same voltage.
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 during at least one vertical blank period in the low speed driving mode;
- and
- converting the pixel data to a data voltage and converting the park data to a park voltage in the data driving circuit,
- wherein the park voltage is applied to all pixels of the pixel array at a same voltage.
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:
- control a refresh rate of the pixels at a reference frame frequency in a normal driving mode and the refresh rate of the pixels at a frequency lower than the reference frame frequency in a low speed driving mode, and
- transmit the park data to the data driving circuit during at least one vertical blank period in the low speed driving mode,
- wherein the timing controller is configured to determine the park data based on a pixel position to which the pixel data is written, a frame frequency of the low speed driving mode, and an amount of deterioration of each of the pixels.
Dependencies are inferred from the claim text.