Polarizing plate and display device

Details Polarizing plate and display device Polarizing plate and display device

2006-06-15

2009-06-23

Hendricks, Keith D (Department: 1794)

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

With viewing layer of specified composition

C428S001540, C349S096000, C349S118000, C106S181100

Reexamination Certificate

active

07550182

ABSTRACT:
A polarization plate comprising a polarizer and polarizing plate protective films A and B provided on both surfaces of the polarizer, wherein (i) a thickness of each of the polarizing plate protective films A and B is 30 to 60 μm; (ii) in-plate retardation value Ro of the polarizing plate protective film B is 20 to 100 nm; (iii) retardation value Rt in the thickness direction of the polarizing plate protective film B is 10 to 300 nm; (iv) a thickness of the polarizing plate is 80 to 160 μm; (v) a stiffness of the polarizing plate of the polarizing plate under a condition of 23° C. and 55% RH is 20 to 80 g.

REFERENCES:
patent: 2689799 (1954-09-01), Albus et al.
patent: 2003/0001988 (2003-01-01), Maeda et al.
patent: 2003/0037703 (2003-02-01), Saito
patent: 2003/0156235 (2003-08-01), Kuzuhara et al.
patent: 2003/0170482 (2003-09-01), Murakami
JPO Website Machine English Translation of JP 2004-198904, Murakami, Jul. 15, 2004.

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