04-06-2020 дата публикации
Номер: US20200174314A1
Принадлежит:
A polarizing plate includes: a polarizer; a hard coat layer; and a recess formed at an outer edge of the polarizing plate or a through hole bored through the polarizing plate in a thickness direction. At least the polarizer and the hard coat layer are stacked, and the hard coat layer is not formed in a stress concentration part, included in the edge at which the recess or the through hole is formed, in which stress concentrates in a case where a change in temperature of the polarizing plate is effected with the hard coat layer formed all over the polarizer. 1. A polarizing plate comprising:a polarizer;a hard coat layer; anda recess formed at an outer edge of the polarizing plate or a through hole bored through the polarizing plate in a thickness direction,wherein at least the polarizer and the hard coat layer are stacked, andthe hard coat layer is not formed in a stress concentration part, included in the edge at which the recess or the through hole is formed, in which stress concentrates in a case where a change in temperature of the polarizing plate is effected with the hard coat layer formed all over the polarizer.2. The polarizing plate according to claim 1 , further comprising a luminance-improving film sandwiched between the polarizer and the hard coat layer claim 1 ,wherein the luminance-improving film has a thickness of 25 μm or smaller.3. The polarizing plate according to claim 1 , further comprising a waterproof layer formed on an end face of the stress concentration part.4. The polarizing plate according to claim 1 , wherein in the stress concentration part claim 1 , the hard coat layer has its outer edge located toward an inside of the polarizing plate from an outer edge of the polarizer by a length of a crack having appeared during formation of the recess or the through hole in the polarizing plate.5. A display panel comprising the polarizing plate according to .6. The display panel according to claim 5 , wherein in the stress concentration part claim 5 ...
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