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US 7,733,443 B2Granted
LCD comprising backlight and reflective polarizer on front panel
AssigneeNitto Denko Corporation
InventorsPavel I. Lazarev, Michael V. Paukshto
Life of this patent
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Abstract
A liquid crystal display with a backlight is described. The liquid crystal cell comprising a front panel and a rear panel with polarizing means on each panel, and the front polarizing means includes a reflective polarizer and a dichroic polarizer.
Claims16
A liquid crystal display for producing an image comprising pixels in the “on” and “off” states, comprising:
- a liquid crystal cell, having a front side and a rear side, comprising front and rear panels with polarizing means on each said panel, and
- a backlight system comprising a light source and a reflector,
- wherein the polarizing means on the front panel include a reflective polarizer and a dichroic polarizer,
- wherein the transmission axes of said reflective and dichroic polarizers coincide and the dichroic polarizer is placed on the front side of the reflective polarizer,
- wherein only one side of said liquid crystal cell comprises a reflective polarizer,
- wherein the polarizing means on the rear panel is not a reflective polarizer, and
- wherein the directions of the transmission axes of said polarizing means on the front panel and the rear panel are perpendicular.
4 more elements
Dependencies are inferred from the claim text.