Optical laminate and optical display apparatus comprising the same
AssigneeSamsung SDI Co., Ltd.
InventorsSeung Mi Shin, Beom Deok Lee, Seong Hoon Lee, Seon Gyeong Jeong, A Ra Jo, Wan Taek Hong
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Abstract
An optical laminate and an optical display apparatus including the same are provided. An optical laminate includes: a polarizer; and a first protective layer and a retardation layer stacked on a light incidence surface of the polarizer, the retardation layer including at least a positive C layer, and a laminate of the first protective layer and the retardation layer having a photoelastic coefficient of about 2×10−13 cm2/dyne or less and a modulus of about 2,000 MPa to about 4,000 MPa, as measured in an absorption axis direction of the polarizer in the optical laminate.
Claims18
An optical laminate comprising:
- a polarizer;
- and
- a first protective layer and a retardation layer that are sequentially stacked on a light incidence surface of the polarizer,
- wherein the retardation layer comprises at least a positive C layer, and a laminate of the first protective layer and the retardation layer has a photoelastic coefficient of about 2×1031 13 cm2/dyne or less and a modulus of about 2,000 MPa to about 4,000 MPa, as measured in an absorption axis direction of the polarizer in the optical laminate,
- wherein the laminate of the first protective layer and the retardation layer has a modulus variation rate of about −3% to about 0%, as calculated according to the following Equation 1:
- Modulus variation rate={(B−A)/A}×100,
- where, in Equation 1, A denotes the modulus of the laminate of the first protective layer and the retardation layer in the absorption axis direction of the polarizer, and B denotes a modulus of the laminate of the first protective layer and the retardation layer in the absorption axis direction of the polarizer, as measured after being left at 105° C. for 1 hour.
Dependencies are inferred from the claim text.