Display device, driving method thereof, and electronic paper

A driving method of a display device, wherein:

• the display device comprises a plurality of pixels, wherein the pixel comprises N subpixels whose pixel electrode areas are not equal to each other, a subpixel is capable of displaying M grayscales, and both N and M are integers not less than 2, wherein a ratio of pixel electrode areas of two of the N subpixels is at least 2, meaning one pixel electrode are is at least twice the size of another pixel electrode area and wherein the display device comprises a plurality of gate lines and a plurality of data lines;
• and the subpixel comprises a switching transistor, a control terminal of the switching transistor is electrically connected to the gate line, an input terminal of the switching transistor is electrically connected to the data line, and an output terminal of the switching transistor is electrically connected to a pixel electrode;
• and the driving method comprises:
• during display of a frame of image:
• controlling duration of a data voltage on a pixel electrode of the subpixel, so that the subpixel displays a target grayscale, wherein the target grayscale is any one of the M grayscales, and grayscales displayed by the N subpixels are combined to present displayed grayscales of the pixel;
• displaying an initial grayscale of the subpixel before the frame of image is displayed, wherein the initial grayscale is any one of the M grayscales;
• and
• the controlling duration of a data voltage on a pixel electrode of the subpixel, so that the subpixel displays a target grayscale comprises:
• providing, by a gate line, a scan signal to control a switching transistor to be turned on, to write the data voltage to the pixel electrode by using the data line, wherein the subpixel is switched from the initial grayscale to the target grayscale under control of the data voltage, the duration of the data voltage is T, and T=m*t, wherein m is a positive integer not less than 1, and t is a scanning period at which the gate line provides a scan signal.

An electronic paper, comprising a display device, wherein the display device comprises:

• a plurality of pixels, wherein the pixel comprises N subpixels whose pixel electrode areas are not equal to each other, each of the subpixel is capable of displaying M grayscales, and both N and M are integers not less than 2, wherein:
• the electronic paper comprises a plurality of gate lines and a plurality of data lines;
• and the subpixel comprises a switching transistor, a control terminal of the switching transistor is electrically connected to the gate line, an input terminal of the switching transistor is electrically connected to the data line, and an output terminal of the switching transistor is electrically connected to a pixel electrode;
• and
• the electronic paper is configured to display an initial grayscale of the subpixel before the frame of image is displayed, wherein the initial grayscale is any one of the M grayscales and the controlling duration of a data voltage on a pixel electrode of the subpixel, so that the subpixel displays a target grayscale comprises:
• providing, by a gate line, a scan signal to control a switching transistor to be turned on, to write the data voltage to the pixel electrode by using the data line, wherein the subpixel is switched from the initial grayscale to the target grayscale under control of the data voltage, the duration of the data voltage is T, and T=m*t, wherein m is a positive integer not less than 1, and t is a scanning period at which the gate line provides a scan signal.