METHOD OF PRODUCING POLARIZING PLATE WITH OPTICAL COMPENSATION LAYER AND IMAGE DISPLAY APPARATUS USING POLARIZING PLATE WITH OPTICAL COMPENSATION LAYER

• US 20090257017A1
• Filed: 12/21/2006
• Published: 10/15/2009
• Est. Priority Date: 02/09/2006
• Status: Active Grant

• Current Assignee: Nitto Denko Corporation
• Original Assignee: Nitto Denko Corporation
• Inventors: Okada, Hiroyuki, Kitamura, Yoshitsugu
• Granted Patent: US 7,764,338 B2
• Time in Patent Office: Days
• US Class Current: 349/194
• CPC Class Codes: B29D 11/0073 Optical laminates
• CPC Class Codes: G02B 5/3016 involving passive liquid crystal elements optical properties of liquid crystals G02F1/0063; polarising elements associated with active liquid crystal devices G02F1/133528
• CPC Class Codes: G02B 5/3083 Birefringent or phase retarding elements G02B5/3008, G02B5/3016 take precedence; systems for polarisation control G02B27/286; manufacturing phase modulating patterns by lithographic processes G03F7/001
• CPC Class Codes: G02F 1/1335 Structural association of cells with optical devices, e.g. polarisers or reflectors
• CPC Class Codes: G02F 1/133528 Polarisers
• CPC Class Codes: G02F 1/13363 Birefringent elements, e.g. for optical compensation

Abstract

There are provided a method of producing a polarizing plate with an optical compensation layer having excellent adhesiveness between a polarizer-protective film and a polarizer without deterioration of the optical compensation layer. The method of producing a polarizing plate with an optical compensation layer includes: laminating an optical compensation layer on one side of a polarizer-protective film via a photo-curing adhesive layer; irradiating UV light toward the other side of the polarizer-protective film by a metal halide lamp or an ultrahigh pressure mercury lamp; and laminating a polarizer on the side of the polarizer-protective film on which the optical compensation layer is not formed.

Claims

1. A method of producing a polarizing plate with an optical compensation layer, comprising:

laminating an optical compensation layer on one side of a polarizer-protective film via a photo-curing adhesive layer;

irradiating UV light toward the other side of the polarizer-protective film by a metal halide lamp or an ultrahigh pressure mercury lamp; and

laminating a polarizer on the side of the polarizer-protective film on which the optical compensation layer is not formed.

2. A method of producing a polarizing plate with an optical compensation layer according to claim 1, wherein

the optical compensation layer is formed by fixing an aligned state of a liquid crystal material.

3. A polarizing plate with an optical compensation layer, produced by the method of producing a polarizing plate with an optical compensation layer according to claim 1.

4. An image display apparatus, comprising a polarizing plate with an optical compensation layer according to claim 3.

5. A polarizing plate with an optical compensation layer, produced by the method of producing a polarizing plate with an optical compensation layer according to claim 2.

6. An image display apparatus, comprising a polarizing plate with an optical compensation layer according to claim 5.