Display device, display panel, method and device for gamma correction thereof

A device for gamma correction of a display panel, the display panel comprising:

• a sub-pixel, wherein a refresh period of the sub-pixel is divided into at least two sub-frames, different sub-frames correspond to different grayscale intervals, a grayscale interval comprises a plurality of grayscale values, the different grayscale intervals do not overlap with each other, and at least one interval width of a low grayscale interval and a high grayscale interval is smaller than an interval width of a grayscale interval other than the low grayscale interval and the high grayscale interval in the grayscale intervals;
• and
• a controller, configured to:
• determine a target grayscale interval where a to-be-displayed grayscale is located and a target sub-frame corresponding to the target grayscale interval based on the to-be-displayed grayscale;
• and
• correct a gamma of the target grayscale interval, comprising:
• in each of sub-frames before the target sub-frame, provide a grayscale interval data signal corresponding to a grayscale from a corresponding grayscale interval to the sub-pixel, wherein the grayscale interval data signal comprises at least one of a first data signal and a second data signal, the first data signal is a data signal corresponding to a larger endpoint-grayscale between two endpoint-grayscales of the corresponding grayscale interval, and the second data signal is a data signal corresponding to a preset grayscale between the two endpoint-grayscales of the corresponding grayscale interval;
• in the target sub-frame, provide a data signal corresponding to the to-be-displayed grayscale to the sub-pixel, and correct based on collected optical data to obtain a calibration data signal;
• and
• in each of sub-frames after the target sub-frame, provide a dark state data signal to the sub-pixel.

A display panel, comprising:

• a sub-pixel, wherein a refresh period of the sub-pixel is divided into at least two sub-frames, different sub-frames correspond to different grayscale intervals, a grayscale interval comprises a plurality of grayscale values, the different grayscale intervals do not overlap with each other, and at least one interval width of a low grayscale interval and a high grayscale interval is smaller than an interval width of a grayscale interval other than the low grayscale interval and the high grayscale interval in the grayscale intervals;
• and
• a controller, configured to:
• determine a target grayscale interval where a to-be-displayed grayscale is located and a target sub-frame corresponding to the target grayscale interval based on the to-be-displayed grayscale;
• and
• correct a gamma of the target grayscale interval, comprising:
• provide a grayscale interval data signal corresponding to a grayscale from a corresponding grayscale interval to the sub-pixel in each of sub-frames before the target sub-frame, wherein the grayscale interval data signal comprises at least one of a first data signal and a second data signal, the first data signal is a data signal corresponding to a larger endpoint-grayscale between two endpoint-grayscales of the corresponding grayscale interval, and the second data signal is a data signal corresponding to a preset grayscale between the two endpoint-grayscales of the corresponding grayscale interval;
• provide a data signal corresponding to the to-be-displayed grayscale to the sub-pixel in the target sub-frame, and correct based on collected optical data to obtain a calibration data signal;
• and
• in each of sub-frames after the target sub-frame, provide a dark state data signal to the sub-pixel.