Optical film, method of producing the same, and image...

Details Optical film, method of producing the same, and image... Optical film, method of producing the same, and image...

2011-03-15

2011-03-15

Hon, Sophie (Department: 1798)

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

With viewing layer of specified composition

C428S001310, C349S096000, C349S117000, C349S118000

Reexamination Certificate

active

07906184

ABSTRACT:
An object of the present invention is to provide an optical film capable of contributing to reduction in thickness, preventing uneven heating, and favorably preventing light leak in black display, and an image display apparatus using such an optical film. An optical film of the present invention includes a polarizer, a first optical compensation layer having a refractive index profile of nx>ny=nz, and a second optical compensation layer having a refractive index profile of nx>ny>nz in the stated order. In the optical film, an angle formed between an absorption axis of the polarizer and a slow axis of the first optical compensation layer is +17° to +27° or −17° to −27°, an angle formed between the absorption axis of the polarizer and a slow axis of the second optical compensation layer is +85° to +95°, and an Nz coefficient of the second optical compensation layer is 1.2≦Nz≦2.

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International Search Report of PCT/JP2006/301410, date of mailing Apr. 25, 2006.

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