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Resin sheet for bonding hard flat panels, laminate, and display
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A flat panel and resin sheet technology, which is applied in the field of resin sheets for lamination of rigid flat panels, to achieve the effects of suppressing air bubbles, good visibility, and good adaptability to shear processing
Active Publication Date: 2016-03-16
LINTEC CORP
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[0007] However, in the double-sided adhesive tape of Patent Document 3, even if there is a certain height difference when the flat plate and the deformable film are bonded, it can be pasted without leaving air bubbles; , When laminating between non-deformable surfaces, it is impossible to expel air bubbles while laminating, so air bubbles are mixed into the pasting surface, and it is difficult to completely follow the height difference
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[0101] (Preparation of resin sheet)
[0102] When the resin sheet of the present invention is a laminated sheet having a three-layer structure of resin layer A1, resin layer B as an intermediate layer, and resin layer A2, it can be produced, for example, by the following method.
[0103] First, by adding an appropriate solvent to the mixture of the acrylic resin, the cross-linking agent and other additives used as needed, it is prepared to a concentration suitable for coating, so as to prepare resin layers A1 and A1 respectively. Resin solution (a1), (a2) of resin layer A2.
[0104] The above-prepared resin solution (a1) for preparing the resin layer A1 was coated on the release-treated surface of the heavy release sheet, and dried to a predetermined thickness, followed by heating and drying to form the resin layer A1 on the heavy release sheet. Then, the release-treated surface of the light release sheet was laminated on the resin layer A1 to prepare the resin layer A1 sandw...
Embodiment 1
[0165] Apply the resin solution (A-1) on a heavy release sheet (manufactured by Lintec Co., Ltd., product name "SP-PET752150"), heat at 120°C for 2 minutes, and form a resin with a thickness of 50 μm on the heavy release sheet Layer A1. Further, the release surface of a light release sheet (manufactured by Lintec Co., Ltd., product name "SP-PET382120") was laminated on the resin layer A1 to prepare a resin layer A1 sandwiched between two release sheets. In addition, the resin solution (B-1) was coated on a light release sheet (manufactured by Lintec Co., Ltd., product name "SP-PET382120"), and heated at 120°C for 2 minutes to form a 10 μm thick layer on the light release sheet. Resin layer B. Then, the light release sheet of the resin layer A1 sandwiched by the above two release sheets is peeled off, and the exposed resin layer A1 and resin layer B are bonded to obtain a resin laminate formed of two resin layers.
[0166] Further, the resin solution (A-1) was additionally coa...
Embodiment 2
[0168] Except that the thickness of the resin layer B was 20 micrometers, the resin sheet (2) for planar plate lamination was obtained by the method similar to Example 1.
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Abstract
The present invention provides a laminate formed by laminating two hard flat plates with a resin sheet, a display body, and a resin sheet for forming the laminate, wherein the laminate can be easily removed. It prevents air bubbles generated when the above two hard flat panels are bonded together, suppresses the generation of air bubbles over time, and has good visibility. In addition, it has good adaptability to shear processing. The resin sheet for laminating hard flat boards provided by the present invention includes at least three resin layers; the storage modulus of the two resin layers A1 and A2 in contact with the hard flat boards at a temperature of 23° C. is both 0.04 to 0.17 MPa, the loss tangent is less than 0.6, and the thickness is 25 to 180 μm; the resin layer B that is not in contact with the adherend includes at least one layer, and when the layer B has a multilayer laminated structure, the refractive index of each layer is 1.42 ~1.58, the elongation at break of the whole layer B at 23° C. is 0.5-120%, and the thickness is 3-60 μm.
Description
technical field [0001] The present invention relates to a resin sheet for laminating a hard flat panel, a laminate and a display body using the resin sheet. More specifically, it relates to a resin sheet that does not regenerate air bubbles after laminating two hard flat plates (hereinafter, sometimes referred to as "bubble regeneration resistance") while having height difference followability (trackability), And a laminate obtained by laminating two hard flat panels through the resin sheet, and a mobile information terminal device, a touch panel device, a medium-sized and a large-sized display, etc., using the laminate as a component. Background technique [0002] In recent years, in order to improve the image quality of the display, it has been studied to use resin to fill the gap between the front glass and the display module. In Patent Document 1, an example in which an adhesive layer having a loss tangent of 0.6 to 1.5 is used as a core material is used with a film thi...
Claims
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Application Information
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