Gamma debugging method and apparatus

A gamma debugging apparatus, applied to a display panel, wherein the display panel comprises a first display region and a second display region, and the second display region has a pixel density lower than a pixel density of the first display region, and the gamma debugging apparatus comprises an obtaining circuit, a debugging circuit, a detecting circuit and a processing circuit;

• wherein,
• the obtaining circuit is configured to obtain a predetermined gamma data set of the first display region;
• the debugging circuit is configured to perform gamma debugging on test sub-pixels in a test display region selected in the first display region, to obtain a first gamma data set by causing the test sub-pixels to light up and sub-pixels in the test display region other than the test sub-pixels not to emit light and adjusting analog data voltages provided to the test sub-pixels, wherein the test sub-pixels positionally correspond to sub-pixels in the second display region, and the test sub-pixels are part of sub-pixels in the test display region;
• the detecting circuit is configured to control all the sub-pixels in the test display region and all the sub-pixels in the second display region to emit light, and detect a target luminance and a target chrominance of the test display region that correspond to a corresponding grayscale;
• the debugging circuit is further configured to perform gamma debugging on the second display region, such that at the corresponding grayscale, a luminance of the second display region is the target luminance, and a chrominance of the second display region is the target chrominance, and to accordingly obtain a second gamma data set;
• and
• the processing circuit is configured to obtain, based on the second gamma data set, the first gamma data set and the predetermined gamma data set, a third gamma data set applied to the second display region by obtaining a difference gamma data set based on the second gamma data set, the first gamma data set and the predetermined gamma data set.