Display apparatus for compensating abnormal light source by adjusting pulse width modulation

A display apparatus, comprising:

• a light source module, comprising a plurality of normal light-emitting diode (LED) units and a target LED unit;
• and
• a processing circuit, coupled to the light source module, and configured to select at least one normal LED unit, and adjust at least one of a duty cycle and a current value of a pulse width modulation signal for driving the at least one normal LED unit to compensate the target LED unit, wherein the at least one normal LED unit is adjacent to the target LED unit,
• wherein the plural normal LED units are selected to compensate the target LED unit, and the processing circuit sets a first gain value for a first part of the plural normal LED units, and sets a second gain value for a second part of the plural normal LED units, wherein the first gain value is larger than the second gain value;
• and
• a first pixel pitch between the target LED unit and each of the first part of the plural normal LED units is smaller than a second pixel pitch between the target LED unit and each of the second part of the plural of normal LED units.