Polarizer and manufacturing method thereof

A manufacturing method and technology of polarizers, applied in polarizing elements, film/sheet adhesives, non-polymer organic compound adhesives, etc. Strength attenuation and other issues, to achieve good weather resistance, reduce equipment costs, and reduce product manufacturing costs

Active Publication Date: 2011-12-07
BENQ MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The function of the adhesive layer is to adhere the polyvinyl alcohol film and the cellulose triacetate protective film. Usually, a water-phase or solvent-phase compound is used to coat the polyvinyl alcohol film. During the lamination and drying process, the adhesive layer is generated by heat energy. The effect of adhesion, but such process equipment also increases the manufacturing cost of the product
In addition, because the weather resistance of the currently commonly used adhesive layer is not good, the adhesive strength is easily attenuated by the influence of moisture in a high-temperature and high-humidity environment, which limits the usable life of the polarizer.

Method used

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  • Polarizer and manufacturing method thereof
  • Polarizer and manufacturing method thereof
  • Polarizer and manufacturing method thereof

Examples

Experimental program
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Embodiment 1

[0035] Example 1 is a comparison of the characteristics of a polarizer (Experimental Example 1) and a commercial polarizer (Comparative Example 1) according to an embodiment of the present invention. The adhesive composition, protective agent composition and thickness of the polarizer of Example 1 are shown in Table 1. The commercial polarizer of Comparative Example 1 uses a commercial adhesive to bond the polarizing film and the protective layer of cellulose triacetate. Therefore, only its thickness is indicated in Table 1, and its adhesive composition and protective agent are not listed. composition. The comparison of the relevant characteristics of the two cases is shown in Table 2.

[0036] Table 1 The composition and thickness of a polarizer and a commercial polarizer according to an embodiment of the present invention

[0037]

[0038]

[0039] Table 2 Related characteristics of polarizers and commercial polarizers according to an embodiment of the present invention

[0040]...

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Abstract

The invention relates to a polaroid and a manufacturing method thereof. The manufacturing method comprises the following steps of: firstly, coating an adhesive on at least one surface of a polarizing film to form an adhesive layer, wherein the adhesive comprises an acrylic monomer with 1-2 acrylic groups, an acrylic oligomer and a photoinitiator; then carrying out primary ultraviolet irradiation to irradiate ultraviolet light on the adhesive layer to partially solidify the adhesive layer; then forming a protection layer on the adhesive layer, wherein the protection layer includes ultraviolet-curable materials; and finally, carrying out secondary ultraviolet irradiation to irradiate ultraviolet light on the protection layer and the adhesive layer so that the protection layer and the adhesive layer are completely solidified to obtain the polaroid. In the manufacturing method of the polaroid provided by the invention, a heating step is not used so that the equipment cost and the product manufacturing cost are reduced favorably.

Description

Technical field [0001] The invention relates to a polarizer and a manufacturing method thereof, in particular to a multilayer polarizer and a manufacturing method thereof. Background technique [0002] The polarizer generally has a multilayer film structure, including a polyvinyl alcohol (PVA) film, a triacetate cellulose (TAC) protective film, and an adhesive layer. Among them, the polyvinyl alcohol film is used as the main body of the polarizer, and is produced after iodine adsorption, dyeing, and unidirectional stretching. The cellulose triacetate protective film is generally located on both sides of the polyvinyl alcohol film and has the function of protection and support. The function of the adhesive layer is to adhere the polyvinyl alcohol film and the cellulose triacetate protective film. Usually, water or solvent phase compounds are used to coat the polyvinyl alcohol film. During the lamination and drying process, the heat energy is used to generate the adhesive layer T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/30C09J4/02C09J7/02
Inventor 陈俊宏罗任晏
Owner BENQ MATERIALS
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