Patent ID: 7466302

Claim:
A display apparatus comprising: a light generating part generating a first light based on a first control signal; a first driving part outputting a panel driving signal; a display panel disposed on the light generating part to receive the first light that is generated from the light generating part and to receive a second light that is provided from an exterior to display an image based on the panel driving signal; a sensing part disposed on the display panel to output a sensing signal based on the second light to the display panel; and a second driving part disposed between the sensing part and the light generating part to compare a reference voltage range with the sensing signal to output the first control signal to cause the light generating part to generate light, the reference voltage range being determined based on a first reference voltage and a second reference voltage higher than the first reference voltage, the first control signal being in substantially same state or opposite state with respect to a second control signal corresponding to an on/off state of the light generating part.