White film and backlight using same

Details White film and backlight using same White film and backlight using same

2005-11-09

2011-11-29

Chen, Vivian (Department: 1787)

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

C428S001100, C428S001330, C428S304400, C428S314400, C428S315500, C428S318400, C428S319300, C428S319700, C428S480000, C359S350000, C359S361000

Reexamination Certificate

active

08067082

ABSTRACT:
A white film including polymer film wherein both the thermal shrinkage rate in the longitudinal direction and that in the transverse direction of the film are not less than −0.2% and not more than 0.5% at 90° C., and a backlight for liquid crystal displays using such a white film. Since the white film hardly suffers from undulation or rise in its end portions, it is most suitable as a reflection film for backlights of liquid crystal displays. Since a backlight for liquid crystal displays using this white film can be used for a long time, it is applicable to liquid crystal displays of various electrical/electronic devices.

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