General Electric Company

Philip Matthew Peters

Grant Hay

Karkala Arun Kumar

Emine Elif Gurel

Eugene David Herrmann

Joe Riello

Christopher A Coenjarts

Nickey Ambrose

Shixiong Zhu

John Frederick Graf

Jianbo Di

Todd Morris Loehr

Cristina Cojocariu

David L Hartter

Joseph A Riello, Jr

Gareth Charles Riggs

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&#xd7;10cm/cm/&#xb0; C.

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

Disclosed herein are light diffusing films, methods of making the same and articles using the same. In one embodiment, a light diffusing film is formed from a composition comprising: a polycarbonate, phosphite stabilizer, epoxy stabilizer, hindered phenol stabilizer, and light diffusing particles having a refractive index of about 1.3 to about 1.7. The film comprises a hiding power of 0 to about 0.5. In one embodiment, a method for producing a film comprises combining a polycarbonate, a phosphite stabilizer, an epoxy stabilizer, and light diffusing particles to form a combination, and forming the combination into the film.

Light diffusing films, methods of making the same, and articles using the same

A light-diffusing film comprises about 90 wt. % to about 99.999 wt. % polycarbonate, wherein the polycarbonate comprises a yellowness index of about 0.8 to about 1.5 as measured in accordance with ASTM E313-73 (D1925); about 0.001 wt. % to about 3 wt. % light-diffusing particles; wherein weight percents are based on a total weight of the light-diffusing film; and wherein the light-diffusing film comprises a light transmission of about 45% to about 65% as measured in accordance with ASTM D1003-00, and a hiding power of 0 to about 0.5.

Light-diffusing films, backlight display devices comprising the light-diffusing films, and methods of making the same

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&#xd7;10cm/cm/&#xb0; C.

Optical film, light-diffusing film, and methods of making and using the same

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Mt. Vernon, IN, United States of America

Philip Matthew Peters