Liquid crystal panel module with polarization transformation for increased brightness

摘要

A liquid crystal panel module includes a backlight unit consisting of a light guide plate having a reflecting sheet at a lower face, a lamp for projecting light to one side of the light guide plate, a reflector for condensing the light from the lamp onto the light guide plate, and a liquid crystal panel having a polarizing plate at a lower face and disposed on the backlight unit. Equilateral prisms are located between the light guide plate and reflecting sheet of the backlight unit in a direction parallel to a polarization axis of the polarizing plate of the liquid crystal panel unit. Each of the prisms has a prism angle so that the angle of incidence of the light guided from the lamp into the light guide plate is the Brewster angle of the prisms.