Manufacturing method of film polarizing plate, and film polarizing plate and polarizing plate manufactured using the method

A thin-film polarizer and a manufacturing method technology, applied to the manufacture of thin-film polarizers, can solve problems such as difficulties in achieving uniform physical properties of polyvinyl alcohol films, and achieve the effect of reducing the incidence of damage

Active Publication Date: 2017-06-27
杉金光电(南京)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is difficulty in achieving uniform physical properties when the physical properties of the thus-produced polyvinyl alcohol film deteriorate

Method used

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  • Manufacturing method of film polarizing plate, and film polarizing plate and polarizing plate manufactured using the method
  • Manufacturing method of film polarizing plate, and film polarizing plate and polarizing plate manufactured using the method
  • Manufacturing method of film polarizing plate, and film polarizing plate and polarizing plate manufactured using the method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0035] Hereinafter, according to an exemplary embodiment of the present invention, a method of manufacturing a thin film polarizing plate will be described in further detail.

[0036] First, a non-oriented polyvinyl alcohol-based film is bonded to and sandwiched between two or more non-oriented polymer films by attraction force or an adhesive layer to form a film laminate.

[0037] According to an exemplary embodiment of the present invention, the film laminate can be used as long as it has a structure in which a non-oriented polyvinyl alcohol-based film is arranged between two or more non-oriented polymer films, and the non-oriented The number of polymer films or the number of the non-oriented polyvinyl alcohol-based films is not particularly limited.

[0038] For example, the film laminate may have a film comprising a first non-oriented polymer film, a first non-oriented polyvinyl alcohol-based film bonded to the first non-oriented polymer film, and a first non-oriented poly...

Embodiment approach 1

[0104] Three sheets of non-oriented polyurethane film and two sheets of non-oriented polyvinyl alcohol-based film were alternately stacked on each other without using a dielectric material to form a film with non-oriented polyurethane film / non-oriented polyvinyl alcohol-based film / non-oriented polyurethane Film / Non-Oriented Polyvinyl Alcohol-Based Film / Non-Oriented Polyurethane Film Structure Film Laminate.

[0105] In this case, as the non-oriented polyvinyl alcohol-based film, Kuraray's PE30-grade polyvinyl alcohol-based film (thickness: 30 μm) can be used, and it is swelled in a pure solution at 25°C for 15 seconds, and then after using The iodine solution at a concentration of 0.3 wt % was subjected to a dyeing process at a temperature of 25° C. for 60 seconds.

[0106] A film manufactured using a thermoplastic polyurethane resin obtained by the mutual reaction of methylene diphenyl diisocyanate, 1,4-butanediol, and adipic acid may be used as the non-oriented polyurethane ...

experiment Embodiment 1

[0113] Experimental Example 1—Measurement of Breakage Incidence Rate

[0114] The film laminate of Embodiment 1 and Comparative Examples 1 and 2, and the polyvinyl alcohol-based film of Comparative Example 3 were subjected to a cleaning treatment for 15 seconds in a solution having 1 wt% of boron, and then cleaned in at least one The film laminate was oriented at an orientation magnification of 6 to 8 times just before breakage occurred on the polyvinyl alcohol-based film.

[0115] A ratio of the thickness of the polyvinyl alcohol-based film after the orientation process to the thickness of the polyvinyl alcohol-based film before the orientation process was calculated by the following formula. Its calculation result is in figure 2 Indicated.

[0116] Thickness ratio (dr) (%)={thickness of polyvinyl alcohol-based film after orientation (d) / thickness of polyvinyl alcohol-based film before orientation (do)}×100

[0117] The lower the value of the thickness ratio (dr), the ori...

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Abstract

A method of making a thin film polarizer comprising forming a film laminate by bonding a non-oriented polyvinyl alcohol-based film to and sandwiching between two or more non-oriented polymer films using an attractive force or adhesive layer; orienting the film laminate so that the polyvinyl alcohol-based film has a thickness of 10 μm or less; and separating the polymer film and the polyvinyl alcohol-based film of the oriented film laminate from each other.

Description

technical field [0001] The present invention relates to a method of manufacturing a thin film polarizer and a thin film polarizer and a polarizing plate manufactured using the same, and more particularly, to a method of manufacturing a thin film polarizer having a reduced thickness of 10 μm or less, And thin film polarizers and polarizing plates manufactured using the method. Background technique [0002] The polarizer used in the polarizing plate is an optical device capable of converting natural light or randomly selected polarized light into polarized light with a specific directionality, and has been widely used in display devices such as liquid crystal display devices and organic light-emitting display devices (OLEDs) ground use. Polarizers currently used in display devices have generally used polyvinyl alcohol (PVA)-based polarizing films including iodine-based compounds or dichroic dyes and having molecular chains aligned in a predetermined direction. [0003] A pol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/30B32B27/30C08J5/18G02F1/1335
CPCG02B5/305B32B7/12B32B27/08B32B27/306B32B27/308B32B27/32B32B27/36B32B2307/4026B32B2457/20
Inventor 南星铉郑棕炫罗钧日柳惠珉
Owner 杉金光电(南京)有限公司
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