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Protective film applied to curved screen mobile phone

A protective film and curved screen technology, applied in the direction of film/sheet adhesives, adhesives, etc., can solve the problems of unrecognizable fingerprint mobile phones under the screen, large phase difference of PET materials, etc., and achieve the effect of improving recognition sensitivity

Pending Publication Date: 2020-05-01
江苏晶华新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] d. The PET material has a large phase difference, and the fingerprint mobile phone under the screen cannot be recognized

Method used

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  • Protective film applied to curved screen mobile phone
  • Protective film applied to curved screen mobile phone
  • Protective film applied to curved screen mobile phone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 101

[0048]The protective film of this embodiment includes an acrylic pressure-sensitive adhesive PET protective film layer with a thickness of 50 μm as the outermost layer, an acrylic resin functional coating with a thickness of 30 μm arranged on the inner side of the PET protective film layer, and an acrylic resin functional coating with a thickness of 30 μm arranged on the functional coating. A PET / TPU composite film with a thickness of 12μm on the inner side of the layer (the light transmittance>90%, haze<1.5%, 5μm PET+5μm TPU and bonded with 2μm polyurethane structural adhesive) and set on the inside of the PET / TPU composite film An acrylic pressure-sensitive adhesive layer with a thickness of 10 μm is used to provide adhesion. The protective film is attached to the mobile phone screen through the pressure-sensitive adhesive layer. Through the cooperation between the PET protective film layer of appropriate thickness and the PET / TPU composite film It overcomes the problems of p...

Embodiment 102

[0052] The protective film of this embodiment includes an acrylic pressure-sensitive adhesive PET protective film layer (SUS peeling force 3-6gf / 25mm) with a thickness of 60 μm as the outermost layer, and an acrylic pressure-sensitive adhesive film layer with a thickness of 1 μm disposed inside the PET protective film layer. Acrylic resin functional coating, a PET / TPU composite film layer with a thickness of 100 μm (50 μm PET + 50 μm TPU) arranged on the inner side of the functional coating, the composite film can be bonded by polyurethane structural adhesive, light transmittance > 90%, haze <1.5%) and an acrylic pressure-sensitive adhesive layer with a thickness of 25 μm arranged inside the TPU composite film layer to provide adhesion, the protective film is attached to the mobile phone screen through the pressure-sensitive adhesive layer, through the PET protective film layer, The combination of rigidity and flexibility between the TPU composite film layers overcomes the prob...

Embodiment 103

[0056] The protective film of this embodiment includes an acrylic pressure-sensitive adhesive PET protective film layer with a thickness of 100 μm as the outermost layer, an acrylic resin functional coating with a thickness of 10 μm arranged on the inner side of the PET protective film layer, and an acrylic resin functional coating layer arranged on the functional coating layer. A PET / TPU composite film with a thickness of 10 μm on the inner side of the layer (the light transmittance >90%, haze <1.5%, 4 μm PET+5 μm TPU and laminated with 1 μm polyurethane structural adhesive) and set on the inside of the PET / TPU composite film An acrylic pressure-sensitive adhesive layer with a thickness of 50 μm is used to provide adhesion. The protective film is attached to the screen of the mobile phone through the pressure-sensitive adhesive layer. Through the cooperation between the PET protective film layer of appropriate thickness and the PET / TPU composite film It overcomes the problems ...

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Abstract

The protective film applied to the curved-screen mobile phone at least comprises a protective film layer, a functional coating, a composite film layer and a pressure-sensitive adhesive layer, whereinthe protective film layer is the outermost layer of the protective film; the functional coating layer is formed on the inner side of the protective film layer; the composite film layer is positioned on the inner side of the functional coating and is used for providing fitness suitable for the curved screen of the mobile phone; and the pressure-sensitive adhesive layer is positioned on the inner side of the composite film and is used for providing adhesiveness. The protective film disclosed by the invention not only has good fitting performance on a curved screen, but also is beneficial to fingerprint identification under the screen, and the use performance of the mobile phone protective film is greatly improved.

Description

technical field [0001] The invention relates to a protective film applied to a mobile phone with a curved screen, in particular to a protective film applied to a mobile phone with a curved screen without white fog and residue under high temperature. Background technique [0002] At present, the mainstream protective film on the market is generally made of PET. PET film has high strength, good stiffness, high light transmittance, low haze, good mechanical properties and optical properties, and has a very wide range of applications in the field of display screen protection. . [0003] The existing PET protective film generally has a three-layer structure, the middle layer is a PET substrate, and the general thickness is 50 μm to 100 μm; the upper layer is a functional coating, which provides hardening and wear resistance, smooth hand feeling, hydrophobic and oleophobic, anti-fingerprint, anti-glare , self-repair and other functions; the lower layer is a pressure-sensitive adh...

Claims

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Application Information

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IPC IPC(8): C09J7/29
CPCC09J7/29C09J2467/006C09J2475/006C09J2433/00
Inventor 谷啸湘光忠明周晓南
Owner 江苏晶华新材料科技有限公司
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