POLARIZING PLATE AND LIQUID CRYSTAL DISPLAY

Abstract

A polarizing plate comprising a polarizing film and two polarizing plate protective films each having a thickness of 30-60 μm provided on both surfaces of the polarizing film, the polarizing plate further comprising a surface protective film on one surface of the polarizing plate and a release liner on the other surface of the polarizing plate, wherein (A) and (B) simultaneously meet the following conditions, provided that (A) represents a thickness of the surface protective film and (B) represents a thickness of the release liner: Condition (i) 50≦(A)≦200 (μm); Condition (ii) 20≦B) (μm); and Condition (iii) 20≦(A)−(B)≦120 (μm).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic view of a polarizing plate to which a surface protective film and a release liner are adhered.

FIG. 2 is a schematic view showing a dope preparation process, a casting process and a drying process in the solution casting method.

FIG. 3 is a schematic view showing one example of the tenter stretching apparatus (10a) employed in the present invention.

FIG. 4 is a view explaining the stretching angle in the stretching process.

FIG. 5 is a schematic view showing one example of the tenter process employed in the present invention.

FIG. 6 is a schematic view of an automatic lamination apparatus.

Claims

1. A polarizing plate comprising a polarizing film and two polarizing plate protective films each having a thickness of 30-60 μm provided on both surfaces of the polarizing film, the polarizing plate further comprising a surface protective film adhered on one surface of the polarizing plate and a release liner adhered on the other surface of the polarizing plate, wherein (A) and (B) simultaneously meet the following conditions, provided that (A) represents a thickness of the surface protective film and (B) represents a thickness of the release liner. 50≦(A)≦200 (μm)   Condition (i)20≦(B) (μm)   Condition (ii)20≦(A)−(B)≦120 (μm)   Condition (iii)

2. The polarizing plate of claim 1, wherein the surface protective film comprises polyethylene, polyester or polypropylene.

3. The polarizing plate of claim 1i wherein the surface protective film comprises polyester.

4. The polarizing plate of claim 1, wherein the release liner comprises polyethylene, polyester or polypropylene.

5. The polarizing plate of claim 1, wherein the release liner comprises polyester.

6. The polarizing plate of claim 1, wherein the polarizing plate protective film comprises cellulose ester, polyacrylate or cycloolefine polymer.

7. The polarizing plate of claim 1, wherein a thickness of the release liner (B) is 20-50 μm.

8. The polarizing plate of claim 1, wherein a thickness of the release liner (B) is larger than 50 μm.

9. A liquid crystal display comprising the polarizing plate of claim 1.