Patent ID: 6667786
Filing Date: 2003-12-23
Classification: G02B,G02F,G03B,H04N

Abstract:
A display device comprising:a light source, a liquid crystal display panel, a collimating system for collimating light from the light source on the liquid crystal display panel a predetermined collimating angle, and a lenticular screen optically coupled to the liquid crystal display panel at the side of a viewer, lenticulars of the lenticular screen being directed in a first direction for enlarging luminance distribution in a second direction, characterized in that the lenticulars: have a trapezoidal shape with two substantially parallel sides and at least one slanted side that forms an apex angle of the trapezoidal shape, and are arranged such that the light from the light source enters via one side of the two parallel sides and exits the other side of the two parallel sides, and the apex angle is configured so that light from the light source is reflected from the at least one slanted side to also exit the other side of the two parallel sides, thereby reducing asymmetry of the luminance distribution.