FIELD: physics.
SUBSTANCE: liquid crystal display includes: a liquid crystal panel; a light source of the LED for illuminating the back surface of the said liquid crystal panel with light; a diffusion plate disposed between the liquid crystal panel and the light source of the LED; a reflective sheet located on the side opposite the diffusion plate with respect to the light source of the LED; a panel fastening means disposed on the back surface side of the reflective sheet; and at least one photodetector located on the back surface side of the reflective sheet to detect light reflected by the back surface of the diffusion plate and propagated in the gap between the reflective sheet and the panel fastening means.
EFFECT: increasing the accuracy of detecting the brightness of the source.
10 cl, 11 dwg
