Patent ID: 8363005

Claim:
A liquid crystal display device, comprising: a liquid crystal panel; and a backlight module; wherein the liquid crystal panel comprises a first substrate, a second substrate generally opposite to the first substrate, a light sensor comprising a light-sensing unit disposed at an inner side of the first substrate, and a black matrix comprising a semi-transparent film corresponding to the light-sensing unit disposed at an inner side of the second substrate, the backlight module disposed opposite to the liquid crystal panel adjacent to the first substrate; wherein the light sensor comprises an auxiliary circuit corresponding to the main body of the black matrix, a first output terminal, and a second output terminal; wherein the black matrix further comprises a main body configured for preventing ambient light from reaching the auxiliary circuit and shielding the light emitted from the backlight module; wherein the semi-transparent film is configured for permitting the ambient light to reach the light sensing unit and scattering reducing light emitted from the backlight module through the second substrate; and wherein the main body and the semi-transparent film are made of the same material, and a thickness of the semi-transparent film is 1/4 to 2/3 of that of the main body.