Patent ID: 6449092
Filing Date: 2002-09-10
Classification: G02B,G02F

Abstract:
A liquid crystal display (LCD) system, comprising:a light source including a light guide and a bulb disposed adjacent an edge of the light guide; an LCD panel; and a reflective polarizer disposed in an optical path between the LCD panel and the light source to transmit a first polarization state of light while reflecting a second polarization state of light, the reflective polarizer having an off-axis reflection spectrum for light incident on the reflective polarizer at an angle other than normal that is different than the reflection spectrum for light incident at an angle normal to the reflective polarizer, the off-axis reflection spectrum reflecting at least as much red light as blue or green light over a usable viewing angle of the LCD panel such that a hue of the display will not appear red across the usable viewing angle.