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Patent JPS557783A successfully refreshed from Google Patents.
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JPS557783A Expired / Lapsed JP ⏱️ 0.0 years remaining

Polarizing plate

Assignee: Seiko Instruments Inc
•
Filing: 1978-07-04
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Granted: —
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Expires: 1998-07-04
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Abstract

Abstract PURPOSE: To achieve higher transmittance of light and moisture resistance by letting iodine be adsorbed only on one side of a polyvinyl alcohol film. CONSTITUTION: In the case of obtaining the polarizing plate by letting iodine be adsorbed on a polyvinyl alcohol film, the adsorption of iodine is confined only to one side of the film and excess iodine is adsorbed on this surface, whereby the degradation in moisture resistance is prevented. In addition, dichromatic coloring matter or dyes are adsorbed on the other side, if desired, to increase the polarization efficiency and transmittance of light of the color polarizing plate and enable the polarizing plate to be thinly constituted. COPYRIGHT: (C)1980,JPO&Japio

Inventors

  • 👤 Yoshio Katagiri

Bibliographic Details

Application Number —
Jurisdiction JP
Data Source google_patents
Last Synchronized 2026-10-30 20:51
CPC Classifications
—

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