Optical film, light-diffusing film, and methods of making...

Details Optical film, light-diffusing film, and methods of making... Optical film, light-diffusing film, and methods of making...

2007-10-09

2007-10-09

Duong, Thoi V. (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Particular illumination

C349S064000, C362S355000

Reexamination Certificate

active

10895787

ABSTRACT:
A method of making an optical film comprises heating the optical film comprising greater than or equal to 80 wt. % polycarbonate to a sufficient temperature to stretch the optical film, wherein the weight percent is based on a total weight of the optical film; and stretching the optical film, wherein a resulting stretched optical film has a linear CTE measured in a direction parallel to a stretching direction of less than or equal to 50×10−6cm/cm/° C.

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