Title:
CIRCULARLY POLARIZING PLATE
Document Type and Number:
Japanese Patent JP2021179599
Kind Code:
A
Abstract:
To provide a circularly polarizing plate having improved flexibility and improved elasticity.SOLUTION: In a circularly polarizing plate having a polarizing layer containing a linearly polarizing layer, and a phase difference layer containing a λ/4 phase difference layer, a phase difference layer bonding layer, and a positive C layer, the phase difference layer bonding layer has an elastic modulus of 1 GPa or larger, the circularly polarizing plate has crack strain of 15% or larger, and the crack strain is an elongation percentage (%) when both the ends of the circularly polarizing plate having 5 cm in a length and 10 mm in a width are pulled at a speed of 4 mm/minute in a longitudinal direction, and cracks occur in the circularly polarizing plate.SELECTED DRAWING: Figure 1
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Inventors:
KIM DONG HWI
KIM EUN-YOUNG
KIM EUN-YOUNG
Application Number:
JP2021058364A
Publication Date:
November 18, 2021
Filing Date:
March 30, 2021
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO
International Classes:
G02B5/30; B32B7/022; B32B7/023; B32B9/00
Attorney, Agent or Firm:
Michiko Matsutani
Masaishi Nishishita
Masaishi Nishishita
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