Classifications

• • G—PHYSICS
  • G02—OPTICS
  • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
  • G02B5/00—Optical elements other than lenses
  • G02B5/30—Polarising elements
• • G—PHYSICS
  • G02—OPTICS
  • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
  • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
  • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
  • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
  • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
  • G02F1/1333—Constructional arrangements; Manufacturing methods
  • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors

Definitions

• the polarizing plate according to the present invention includes at least one polarizing element film, a transparent protective layer provided on one or both sides of the polarizing element film, and an acrylic resin layer provided between the polarizing element film and the protective layer. It is characterized by providing.
• the polyvinyl alcohol film may contain an alkali metal, an alkaline earth metal, a halide, or an inorganic metal.
• the polyville alcohol-based film may contain one or more kinds
• a transparent protective layer is provided on both or one side of the polarizing element film.
• the transparent protective layer can be formed by applying a polymer or can be provided as a laminate layer of a film.
• the transparent polymer or film forming the transparent protective layer is preferably a transparent polymer or film having high mechanical strength and good thermal stability.
• a substance used as the transparent protective layer for example, triacetyl cellulose is preferable.
• the total hydroxyl value of the (meth) acrylate component is 95 to 120 mgKOH / g, preferably 100 to 120 mgKOH / g, more preferably 100 to 110 mgKOH / g, and most preferably 105 to 110 mgKOH / g.
• the (meth) acrylate (A) having a hydroxyl group is preferably a polyfunctional (meth) acrylate, and is a (meth) acrylate having three or more (meth) acryloyl groups in addition to the hydroxyl group. More preferably.
• dipentaerythritol pentaacrylate 107 mgKOH / g
• the content of the (meth) acrylate (B) having three or more (meth) acryloyl groups in the polymerizable resin composition is preferably 50 to 99% by weight in the solid content of the polymerizable resin composition, More preferably, it is 70 to 99% by weight.
• the thickness of the acrylic resin layer is 5 to 10 ⁇ m, preferably 5 to 8 ⁇ m. By setting the thickness of the acrylic resin layer within this range, there is an effect that the durability of the polarizing plate can be improved.
• the thickness of the acrylic resin layer is more than 10 ⁇ m, not only the polarizing plate becomes thick, but also when the acrylic resin layer and the polarizing element are bonded, the adhesive layer may be poorly dried and the like is not preferable.
• the manufacturing method of a polarizing plate is as follows: (1) a coating liquid preparation step in which a solvent is mixed with the polymerizable resin composition to prepare a coating liquid; and (2) the coating liquid is applied to a protective layer and dried. A coating film forming step of forming (3), an acrylic resin layer forming step of curing the coating film to form an acrylic resin layer, and (4) a dichroic dye adsorbed on the acrylic resin layer. A laminating step of laminating a polarizing element film which is a stretched film of a hydrophilic polymer.
• ISOBAM # 18 manufactured by Kuraray Co., Ltd.
• ISOBAM # 04 manufactured by Kuraray Co., Ltd.
• ammonia-modified ISOBAM # 104 manufactured by Kuraray Co., Ltd.
• ammonia-modified ISOBAM Examples include # 110 (manufactured by Kuraray Co., Ltd.), imidized ISOBAM # 304 (manufactured by Kuraray Co., Ltd.), and imidized ISOBAM # 310 (manufactured by Kuraray Co., Ltd.).
• Various known functional layers such as an antireflection layer, an antiglare layer, a hard coat layer, a liquid crystal coating layer for improving the viewing angle and / or contrast are laminated on the exposed surface of the protective layer of the polarizing plate. Also good.
• a coating method is preferable for producing a layer having various functionalities, but a film having the function may be bonded via an adhesive or a pressure-sensitive adhesive.

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• 2017
  • 2017-06-28 CN CN201780029513.7A patent/CN109154687B/zh active Active
  • 2017-06-28 KR KR1020187036912A patent/KR102368117B1/ko active IP Right Grant
  • 2017-06-28 JP JP2018525199A patent/JP6921070B2/ja active Active
  • 2017-06-28 WO PCT/JP2017/023703 patent/WO2018003838A1/ja active Application Filing
  • 2017-06-30 TW TW106121983A patent/TWI802544B/zh active

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