Light emission control method

A light emission control method to be implemented by a driver circuit, for controlling a light emitting element, and comprising steps of:

• (A) dividing a display time period of an image frame into a number (N) of display time intervals, where the number (N) is an integer no less than two;
• (B) obtaining a brightness threshold value that is no less than the number (N);
• (C) determining whether an original grayscale data value that corresponds to a to-be-displayed grayscale value is greater than the brightness threshold value;
• (D) when it is determined that the original grayscale data value is greater than the brightness threshold value, obtaining a number (N) of first pulse width values that respectively correspond to the number (N) of display time intervals, where each of the number (N) of first pulse width values is no less than one, and a sum of the number (N) of first pulse width values is equal to the original grayscale data value;
• (E) with respect to each of the number (N) of display time intervals, determining whether the first pulse width value that corresponds to the display time interval is greater than a predetermined reference value;
• (F) with respect to each of the number (N) of display time intervals, when it is determined that the first pulse width value that corresponds to the display time interval is greater than the predetermined reference value, driving the light emitting element in a first drive way so that a current flows through the light emitting element during a light emission time segment in the display time interval, a magnitude of the current is equal to a predetermined current value, and a length of the light emission time segment is equal to the first pulse width value that corresponds to the display time interval times a predetermined time length;
• and
• (G) with respect to each of the number (N) of display time intervals, when it is determined that the first pulse width value that corresponds to the display time interval is not greater than the predetermined reference value, driving the light emitting element in a second drive way so that a current flows through the light emitting element during a light emission time segment in the display time interval, a magnitude of the current is less than the predetermined current value, and a length of the light emission time segment is greater than the first pulse width value that corresponds to the display time interval times the predetermined time length.