Filter device and backlight device, each filter sheet having onl

Details Filter device and backlight device, each filter sheet having onl Filter device and backlight device, each filter sheet having onl

1999-08-23

2000-12-19

Malinowski, Walter J.

Liquid crystal cells, elements and systems

Particular structure

Holder, support, frame, or housing

G02F 11333

Patent

active

06163350&

ABSTRACT:
A filter device is mounted in a backlight device for illuminating a transmission type liquid crystal display panel from the rear surface side. The filter device includes a sheet having a polygonal filter portion for imparting predetermined optical characteristics to rays of light emerging from the light exit surface of a light guide and a holding portion extending from one side of the filter portion, a frame member having a polygonal opening portion in correspondence with the filter portion to allow light transmitted through the filter portion of the sheet to pass through, and a double-coated tape for bonding the holding portion of the sheet to the frame member.

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