Patent ID: 8334861

Claim:
A display device comprising a display panel for displaying images, comprising: a first polarizer disposed on a first substrate of the display panel at a side of receiving an external light, which blocks UV-light but transmits visible light; a second polarizer disposed on a second substrate of the display panel at a side of receiving a backlight, which blocks UV-light but transmits visible light; a black matrix disposed on the first substrate at a side opposite to the first polarizer, which blocks both UV-light and visible light; at least one first optical sensor disposed on the first substrate of the display panel and unsheltered by the first polarizer and the black matrix, wherein the external light is detectable by the first optical sensor, and the first optical sensor outputs a first signal in response to a detected wavelength component of the external light; at least one second optical sensor disposed on the first substrate of the display panel, unsheltered by the black matrix and sheltered by the first polarizer, wherein a visible light passing through the polarizer is detectable by the second optical sensor, and the second optical sensor outputs a second signal in response to a detected wavelength component of the visible light; at least one third optical sensor disposed on the first substrate of the display panel and sheltered by the first polarizer and the black matrix so that the external light is hindered, wherein the backlight passing through the second polarizer is detectable by the third optical sensor, and the third optical sensor outputs a third signal in response to a detected wavelength component of the backlight; and a sensor output computing part for computing a UV light intensity of the external light according to the first signal and the second signal outputted from the first optical sensor and the second optical sensor, respectively, and compensating the influence of the backlight on the signals outputted by the first optical sensor and the second optical sensor according to the third signal.