Luminnance-versus-drive signal curve based method for driving display panel, and display device

A display device, comprising:

• a display panel, wherein according to a luminance-versus-drive-signal curve under a side view angle of the display panel, when the drive signal is lower than a first threshold, higher than a second threshold, or between the first threshold and the second threshold, respectively, the slope of the tangent line is higher than the preset slope threshold, higher than the preset slope threshold, or lower than the preset slope threshold;
• and
• a driver chip configured to:
• obtain the drive signal of each of sub-pixels on the display panel;
• determine a first adaptive threshold and a second adaptive threshold according to properties of the sub-pixels;
• adjust the drive signal higher than the first adaptive threshold and lower than the second adaptive threshold to approach the interval lower than the first adaptive threshold or the interval higher than the second adaptive threshold;
• group the sub-pixels of the display panels into a plurality of sub-pixel sets, wherein each sub-pixel set comprises the red sub-pixels, the green sub-pixels and the blue sub-pixels, and the numbers of the red sub-pixels, the green sub-pixels and the blue sub-pixels are the same;
• respectively calculate a first average drive signal of red sub-pixels, a second average drive signal of green sub-pixels, and a third average drive signal of blue sub-pixels in each sub-pixel set;
• calculate parameters of the sub-pixel set in a color space system according to the first average drive signal, the second average drive signal and the third average drive signal;
• when the parameters are located in different intervals, determine different first adaptive thresholds and second adaptive thresholds of the red sub-pixels of the sub-pixel set, determine different first adaptive thresholds and second adaptive thresholds of the green sub-pixels of the sub-pixel set, and determine different first adaptive thresholds and second adaptive thresholds of the blue sub-pixels of the sub-pixel set, wherein the parameters comprise values of saturation and hue;
• and
• increasing the drive signal higher than the average drive signal by a first preset value, when it is determined that the average drive signal is higher than the first adaptive threshold of the corresponding color sub-pixel and lower than the second adaptive threshold of the corresponding color sub-pixel, wherein the average drive signal is the first average drive signal when the corresponding color sub-pixel is the red sub-pixel, the average drive signal is the second average drive signal when the corresponding color sub-pixel is the green sub-pixel, and the average drive signal is the third average drive signal when the corresponding color sub-pixel is the blue sub-pixel.