Methods of making and using optical film, light-diffusing film

Liquid crystal cells – elements and systems – Particular structure – Particular illumination

Reexamination Certificate

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C349S187000, C349S112000, C349S117000, C362S355000, C359S599000

Reexamination Certificate

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11759347

ABSTRACT:
An embodiment of 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. 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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U.S. Appl. No. 10/787,158, filed Feb. 27, 2004, Kevin Capaldo, et al., “Diffuser for Flat Panel Display”, 49 pages.

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