Display apparatus and operating method thereof

A display apparatus, comprising:

• a display panel;
• a light luminance sensing circuit, disposed on the display panel, sensing luminance intensity to generate an output sensing signal, wherein the light luminance sensing circuit comprises:
• a plurality of luminance sensing modules, each of the luminance sensing modules comprises:
• a diode, an anode of the diode receiving an input sensing signal;
• and
• a transistor, a first terminal of the transistor being coupled to a cathode of the diode, a control terminal of the transistor being coupled to a grounding voltage, a second terminal of the transistor generating an output sensing sub-signal, wherein a voltage value of the output sensing sub-signal changes according to the luminance intensity,
• wherein the light luminance sensing circuit generates the output sensing signal according to the output sensing sub-signals of the luminance sensing modules;
• a controller, coupled to the light luminance sensing circuit, receiving the output sensing signal, converting the output sensing signal to generate selecting numeric information according to look-up information, the controller generating a control driving signal according to the selecting numeric information, wherein the look-up information records a corresponding relationship between a plurality of electric characteristic values and a plurality of pieces of numeric information;
• and
• a driving circuit, coupled to the controller, the driving circuit adjusting the luminance intensity of a lighting element according to the control driving signal.