LIQUID CRYSTAL DISPLAY DEVICE AND ELECTRIC DEVICE

PROBLEM TO BE SOLVED: To prevent generation of detection errors between photosensors caused by wiring resistance when luminance adjustment of a backlight is performed on the basis of detection signals of the plurality of photosensors. SOLUTION: Wiring lengths between TFT sensors 31 of photosensors 3a and 3b disposed on a liquid crystal panel 1 and capacitors 32 are nearly equally formed and respective wiring lengths between the capacitors 32 and a signal processing part 4 are nearly equally formed. Wiring resistance values between respective TFT sensors 31a and 31b and the signal processing part 4 are made to be nearly equal to each other and detection errors due to wiring resistance are nearly equally included in the detection signals of the photosensors 3a and 3b input in the signal processing part 4. Thereby, generation of deviation of detection errors due to wiring resistance values between detection signals of the photosensors 3a and 3b can be avoided, correction treatment to detection errors and the like are not necessary and a treatment load can be reduced accordingly. COPYRIGHT: (C)2008,JPO&INPIT