Adhesive layer-attached retardation film, and elliptical polarizing plate and liquid crystal display device each utilizing same
A retardation film, adhesive layer technology, applied in polarizing elements, layered products, instruments, etc., can solve the problems of adhesive layer peeling, liquid crystal cell paste residue, operability deterioration, etc., to achieve excellent reusability , excellent adhesion, and the effect of realizing productivity
Inactive Publication Date: 2012-03-28
SUMITOMO CHEM CO LTD
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Disclosed is an adhesive layer-attached retardation film (10), which comprises a retardation film (20) comprising a polypropylene resin, a primer layer (30) laminated on the surface of the retardation film (20), and an adhesive layer (40) laminated on the surface of the primer layer (30), wherein the primer layer (30) comprises a thermoplastic polyester resin composed of diol units and dicarboxylic acid units and having a weight average molecular weight of 10,000 to 150,000, and wherein a unit represented by formula (I) [wherein R represents a methylene group or an ethylene group; and n represents 1 or 0] makes up 40 to 80 mol% of the total amount of the diol units. In the adhesive layer-attached retardation film (10), the adhesion between the retardation film and an adhesive agent is improved. Also disclosed are an elliptical polarizing plate and a liquid crystal display device, each of which utilizes the adhesive layer-attached retardation film.
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Property | Measurement | Unit |
Thickness | 3.1 | µm |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
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