Method for correcting brightness of display panel and apparatus for correcting brightness of display panel

A method for correcting brightness of a display panel, wherein the display panel comprises:

• a transparent display area;
• and
• a non-transparent display area,
• wherein the transparent display area is a double-side light emitting display area, a front side of the transparent display area is a side close to ambient light, and a back side is a side away from the ambient light;
• the method for correcting brightness comprises:
• starting a brightness correction process according to a brightness correction starting instruction;
• obtaining a current working time length of the display panel and/or a current brightness attenuation state of the display panel;
• determining a first data relationship corresponding to the current working time length of the display panel from a pre-stored first data relationship set and/or a second data relationship corresponding to the current brightness attenuation state of the display panel from a pre-stored second data relationship set;
• recording the first data relationship and/or the second data relationship as a correspondence between an absolute value of an input voltage and a light emitting brightness value of the transparent display area for correcting brightness, wherein the first data relationship set is a set of pre-stored correspondences between absolute values of input voltages and light emitting brightness values of the transparent display area in different working time length ranges of the display panel, and the second data relationship set is a set of pre-stored correspondences between the absolute values of the input voltages and the light emitting brightness values of the transparent display area in different attenuation state ranges of the display panel;
• and
• adjusting an input voltage of the transparent display area according to the first data relationship and/or the second data relationship, so that a front-side light emitting brightness value of the transparent display area is consistent with a light emitting brightness value of the non-transparent display area, or the front-side light emitting brightness value of the transparent display area is restored to a factory default brightness value.

An apparatus for correcting brightness of a display panel, wherein the display panel comprises:

• a transparent display area;
• and
• a non-transparent display area,
• wherein the transparent display area is a double-side light emitting display area, a front side of the transparent display area is a side close to ambient light, and a back side of the transparent display area is a side away from the ambient light;
• the apparatus for correcting brightness comprises:
• a starting circuit configured to start a brightness correction process according to a brightness correction starting instruction;
• a first curve obtaining circuit configured to obtain a first curve representing a relationship between absolute values of input voltages of the transparent display area and light emitting brightness values of the transparent display area in a current state;
• a first storing circuit configured to store the first curve;
• an updating circuit configured to record the first curve as a relationship curve showing a relationship between absolute values of input voltages and light emitting brightness values of the transparent display area for correcting brightness;
• and
• a correcting circuit configured to adjust an input voltage of the transparent display area according to the first curve, so that a front-side light emitting brightness value of the transparent display area is consistent with a light emitting brightness value of the non-transparent display area, or the front-side light emitting brightness value of the transparent display area is restored to a factory default brightness value.