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    Method and apparatus for continuously producing optical panel assemblies
    73.
    发明公开
    Method and apparatus for continuously producing optical panel assemblies 有权
    Verfahren zur durchgehenden Herstellung von optischen Anzeigevorrichtungen

    公开(公告)号：EP2426525A1

    公开(公告)日：2012-03-07

    申请号：EP11179962.3

    申请日：2011-09-02

    申请人： Nitto Denko Corporation

    发明人： Goto, Shusaku ,  Miyatake, Minoru ,  Mori, Tomohiro ,  Kamijo, Takashi ,  Nakazono, Takuya ,  Kitagawa, Takeharu

    IPC分类号： G02B5/30 ,  B32B37/22

    CPC分类号： B32B37/0046 ,  B29C55/023 ,  B29C55/026 ,  B29C55/065 ,  B29K2029/04 ,  B29K2067/003 ,  B29K2995/0034 ,  B32B37/025 ,  B32B37/12 ,  B32B37/18 ,  B32B37/182 ,  B32B37/203 ,  B32B38/0004 ,  B32B38/04 ,  B32B38/10 ,  B32B38/145 ,  B32B38/18 ,  B32B2037/243 ,  B32B2038/045 ,  B32B2307/42 ,  B32B2309/72 ,  B32B2457/20 ,  B32B2457/202 ,  B32B2457/206 ,  B32B2457/208 ,  B32B2551/00 ,  G02B5/305 ,  Y10T156/1059 ,  Y10T156/1062 ,  Y10T156/1082 ,  Y10T156/12 ,  Y10T156/1322

    摘要： A method of producing an optical panel assembly including the polarizing film in a continuous manner by laminating a polarizing film to a surface of a rectangular-shaped optical panel, is disclosed. The polarizing film is formed by performing a step of subjecting a laminate comprising a continuous web of a thermoplastic resin substrate and a PVA type resin layer formed on the substrate, to a 2-stage stretching consisting of a preliminary in-air stretching and an in-boric-acid-solution stretching, to reduce a thickness of the PVA type resin layer to 10 µm or less, and a step of causing a dichroic material to be absorbed in the PVA type resin layer. A plurality of slits are formed in a carrier film-attached optical film laminate prepared by releasably attaching a carrier film to the optical film laminate with the polarizing film through an adhesive layer, in a width direction thereof at lengthwise given intervals corresponding to one of long and short sides of the optical panel, to extend from a surface of the optical film laminate to a depth reaching a surface of the carrier film facing the adhesive layer to thereby form an optical film laminate sheet between lengthwisely adjacent two of the slits. The laminate is fed to a lamination position in such a manner that each of the sheets becomes synchronous with a respective one of the optical panels being sequentially fed to the lamination position. Each of the sheets is peeled from the carrier film while allowing the adhesive layer to be left on the side of the optical film laminate, and the peeled sheet is laminated to the optical panel fed to the lamination position, through the adhesive layer.

    摘要翻译： 公开了一种通过将偏振膜层叠到矩形光学面板的表面上来连续地制造包括偏光膜的光学面板组件的方法。 偏光膜是通过对由热塑性树脂基板的连续纤维网和形成在基材上的PVA型树脂层构成的层叠体进行2段拉伸而形成的，该两段拉伸由初步的空气中拉伸和 硼酸溶液拉伸，将PVA类树脂层的厚度减薄到10μm以下，以及使二色性材料在PVA型树脂层中吸收的工序。 多个狭缝形成在通过粘合剂层将偏光膜沿宽度方向以长度给定的间隔对应于长条状的一个长度的间隔而将载体膜可剥离地附着到具有偏振膜的光学膜层叠体上制备的载体膜附着光学膜层叠体中 和光学面板的短边，从光学膜层压体的表面延伸到到达面向粘合剂层的载体膜的表面的深度，从而在纵向相邻的两个狭缝之间形成光学膜层压片。 将层压体以这样的方式进给到层压位置，使得每个片材与相应的一个光学面板顺序地进给到层压位置同步。 将每个片材从载体膜上剥离，同时允许粘合剂层留在光学膜层压体的一侧，并且将剥离的片材通过粘合剂层层压到送入层压位置的光学板上。