Display device and driving method thereof
AssigneeLG Display Co., Ltd.
InventorsDongseok AHN, Suhyeon JO, Sungyoung SON
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Abstract
Disclosed are a display device and a driving method thereof. A reference compensation voltage for compensating for a node voltage of each pixel for an image holding period after a refresh period for which image data is input in a low-speed driving mode is set. Then, the node voltage of each sub-pixel is compensated for using a corresponding reference compensation voltage on at least one frame basis at each start time and each end time of the image holding period, thereby preventing low image quality and reducing power consumption.
Claims20
A device, comprising:
- an image display panel having a plurality of sub-pixels to display an image;
- a data driver;
- a timing controller configured to:
- align image data from an external data source based on a driving frequency characteristic of the image display panel;
- supply the aligned image data to the data driver;
- and
- control an output timing of a gate drive signal of a gate driver;
- wherein the data driver is configured to:
- sequentially supply an image data voltage corresponding to the image data to each of the sub-pixels for a refresh period set based on the driving frequency of the image display panel;
- and
- supply different first and second preset reference compensation voltages to each of the sub-pixels respectively at a start time and an end time of an image holding period based on the driving frequency of the image display panel.
A method for driving a display device including an image display panel, the method comprising:
- receiving image data from an external data source;
- aligning the image data based on a driving frequency characteristic of the image display panel;
- supplying the aligned image data to a data driver to control a driving timing of the data driver;
- controlling an output timing of a gate drive signal of a gate driver to drive a plurality of sub-pixels of the image display panel;
- and
- operating the data driver such that the plurality of sub-pixels are driven to display an image,
- wherein operating the data driver such that the plurality of sub-pixels are driven to display an image includes:
- sequentially supplying an image data voltage corresponding to the image data to each of the sub-pixels for a refresh period set based on the driving frequency of the image display panel;
- and
- supplying different first and second preset reference compensation voltages to each of the sub-pixels respectively at a start time and an end time of an image holding period based on the driving frequency of the image display panel.
Dependencies are inferred from the claim text.