Polarizer, polarizing plate, and liquid crystal display using the same
First Claim
1. A polarizer formed by dyeing, crosslinking, stretching and drying a hydrophilic polymer film, wherein the polarizer has shrinkage force of at most 4.0 N/cm in an absorption axis direction after being heated at 80°
- C. for 30 minutes.
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Abstract
The present invention provides a polarizer and a polarizing plate having less dimensional changes to heat stress. The present invention provides also a liquid crystal display that includes the polarizer and the polarizing plate, and is free of color irregularity or decoloration. The polarizer has shrinkage force of not more than 4.0 N/cm in the absorption axis direction after being heated at 80° C. for 30 minutes. A protective film is laminated on at least one surface of the polarizer in order to form a polarizing plate, and the polarizing plate has a following relationship of 0.01≦A/B≦0.16 when A denotes a thickness of the polarizer and B denotes a thickness of the protective film.
68 Citations
20 Claims
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1. A polarizer formed by dyeing, crosslinking, stretching and drying a hydrophilic polymer film, wherein the polarizer has shrinkage force of at most 4.0 N/cm in an absorption axis direction after being heated at 80°
- C. for 30 minutes.
- View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A polarizing plate comprising:
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a polarizer having a shrinkage force of at most 4.0 N/cm in an absorption axis direction after being heated at 80°
C. for 30 minutes; and
a protective film laminated on at least one surface of the polarizer, wherein the polarizing plate satisfies a relationship of 0.01≦
A/B≦
0.16 where A denotes a thickness of the polarizer and B denotes a thickness of the protective film. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 20)
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19. A liquid crystal display comprising:
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a liquid crystal cell; and
a polarizing plate disposed on at least one surface of the liquid crystal cell, wherein the polarizing plate comprises;
a polarizer having a shrinkage force of at most 4.0 N/cm in an absorption axis direction after being heated at 80°
C. for 30 minutes; and
a protective film laminated on at least one surface of the polarizer, wherein the polarizing plate satisfies a relationship of 0.01≦
A/B≦
0.16 where A denotes a thickness of the polarizer and B denotes a thickness of the protective film.
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Specification