Nitto-denko Corporation

Nobuyuki Haida

Shusaku Goto

Takeharu Kitagawa

Minoru Miyatake

Takashi Shimizu

Takashi Kamijo

Tomohiro Mori

Yuusuke Toyama

Yuuki Nakano

Kentaro Ikeshima

Osamu Kaneko

Hitoshi Kitagishi

Provided a polarizing film which comprising a substrate and a PVA-based resin, wherein it has good adhesion between the substrate and the PVA-based resin to allow the PVA-based resin to become less likely to be peeled off from the substrate during stretching and/or conveyance, and exhibits excellent appearance, wherein the polarizing film is obtained by providing a layer of a PVA-based resin on a substrate and stretching the substrate and the PVA-based resin layer together. The PVA-based resin contains a modified PVA, wherein the modified PVA exists in an amount allowing a modification rate with respect to the entire PVA-based resin to be in a range of 0.04 mol % to 1.4 mol %.

Polarizing film obtained by acetoacetyl-modified PVA-based resin having specified modification rate

The present invention provides a method of manufacturing a polarizing plate having sufficient heat resistance, without deteriorating the dye-affinity and the like of the polarizing film and without the necessity of transferring or detaching the polarizing film. Provided is a method of manufacturing a polarizing plate () that includes a polyester resin base () and a polarizing film including a polyvinyl alcohol resin laminated on the polyester resin base. The method includes the steps of: stretching a laminate that includes a polyvinyl alcohol resin layer () laminated on the polyester resin base (); dyeing the polyvinyl alcohol resin layer (); and crystallizing the polyester resin base (). The crystallization step is performed after the dyeing step.

Method of manufacturing polarizing plate

The present invention provides a liquid crystal panel in which warping is controlled. The liquid crystal panel includes a liquid crystal cell, a first polarizing filmdisposed on a viewer side of the liquid crystal celland a second polarizing filmdisposed on a side of the liquid crystal cellopposite to the viewer side. A thickness (d) of the first polarizing filmis smaller than a thickness (d) of the second polarizing film

Liquid crystal panel and liquid crystal display apparatus

A method of manufacturing a polarizing plate according to an embodiment of the present invention includes: stretching and dyeing a laminate having a resin substrate and a polyvinyl alcohol-based resin layer formed on at least one side of the resin substrate to produce a polarizing film on the resin substrate; laminating an optically functional film on the laminate on a polarizing film side to produce an optically functional film laminate; and peeling the resin substrate from the optically functional film laminate. The peeling is performed so that an angle &#x3b1; formed between a surface of the optically functional film laminate immediately before the peeling and a peeling direction of the resin substrate is smaller than an angle &#x3b2; formed between the surface of the optically functional film laminate immediately before the peeling and a peeling direction of the polarizing film.

Growing community of inventors

Ibaraki, Japan

Nobuyuki Haida