Protection film suitable for illuminated display devices
First Claim
1. A protection film comprising:
- an optical film suitably sized for an illuminated display device, the optical film having a major surface comprising perimeter surface portions defining a central region; and
a pressure sensitive adhesive layer disposed at perimeter surface portions such that the central region is free of pressure sensitive adhesive;
wherein the protection film is curved such that opposing edges that define the thickness of the protection film are spaced above a reference plane by a distance of at least 1 mm when the protection film is placed on the reference plane such that the central region is flush with the reference plane;
wherein the protection film is curved by at least one of (1) the optical film having a tension differential between at least two layers, (2) the optical film including a heat shrinkable film, (3) the optical film including a coating composition having sufficient shrinkage to induce curvature, or (4) the protection film having rolled been upon itself forming a hollow tube.
1 Assignment
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Accused Products
Abstract
The present invention relates to protection films comprising an optical film suitably sized for an illuminated display device, the optical film having perimeter surface portions defining a central region. The protection film further comprises a pressure sensitive adhesive layer at the perimeter surface portions of the optical film. The optical film and/or pressure sensitive adhesive layer has been adapted such that the at least the central region of the optical film contacts the illuminated display device or the central region of the optical film is bonded to the illuminated display device by means of a self-wetting layer. The protection film may be preassembled or may be provided as a kit, the kit comprising an optical film and a double-faced pressure sensitive tape.
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Citations
10 Claims
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1. A protection film comprising:
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an optical film suitably sized for an illuminated display device, the optical film having a major surface comprising perimeter surface portions defining a central region; and a pressure sensitive adhesive layer disposed at perimeter surface portions such that the central region is free of pressure sensitive adhesive; wherein the protection film is curved such that opposing edges that define the thickness of the protection film are spaced above a reference plane by a distance of at least 1 mm when the protection film is placed on the reference plane such that the central region is flush with the reference plane; wherein the protection film is curved by at least one of (1) the optical film having a tension differential between at least two layers, (2) the optical film including a heat shrinkable film, (3) the optical film including a coating composition having sufficient shrinkage to induce curvature, or (4) the protection film having rolled been upon itself forming a hollow tube. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification