METHOD OF MANUFACTURING POLARIZER
To provide a method of manufacturing a polarizer, which allows for sufficiently improving single transmittance even if a humidification time is reduced during a humidification step.SOLUTION: A polarizer manufacturing method according to an embodiment of the present invention comprises a first dying...
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| Format: | Patent |
| Sprache: | eng ; jpn |
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| Zusammenfassung: | To provide a method of manufacturing a polarizer, which allows for sufficiently improving single transmittance even if a humidification time is reduced during a humidification step.SOLUTION: A polarizer manufacturing method according to an embodiment of the present invention comprises a first dying step of dying a polyvinyl alcohol resin film with a dichroic substance, a stretching step of stretching the polyvinyl alcohol resin film in a boric acid aqueous solution after the first dying step, and a second dying step of eluting boric acid from the polyvinyl alcohol resin film after the stretching step and dying the polyvinyl alcohol resin film with a dichroic substance.SELECTED DRAWING: Figure 1
【課題】加湿工程に供したときに加湿時間を低減しても、単体透過率を十分に向上できる偏光子を製造し得る方法を提供すること。【解決手段】本発明の実施形態による偏光子の製造方法は、ポリビニルアルコール系樹脂フィルムを二色性物質で染色する第１染色工程と；第１染色工程後のポリビニルアルコール系樹脂フィルムを、ホウ酸水溶液中で延伸する延伸工程と；延伸工程後のポリビニルアルコール系樹脂フィルムからホウ酸を溶出させるとともに、該ポリビニルアルコール系樹脂フィルムを二色性物質で染色する第２染色工程と；を含む。【選択図】図１ |
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