PACKAGING AND HANDLING METHOD FOR OPTICAL FILMS
First Claim
Patent Images
1. A method for stacking optical films for an optical display, comprising:
- providing first and second optical films with respective viewing areas; and
bonding the first and second optical films with a zero-gap bond outside viewing areas of the first and second optical films.
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Abstract
The invention is directed to a new packaging method in which several optical films are bundled together before insertion into the display frame. This bundling makes handling of the films easier, reduces the number of steps required for assembly of the display device, reduces the chance of damaging the films and increases yields. At least two of the films in the stack are bonded together using a zero-gap bond. The zero-gap bond lies outside the viewing area of the film.
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Citations
43 Claims
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1. A method for stacking optical films for an optical display, comprising:
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providing first and second optical films with respective viewing areas; and
bonding the first and second optical films with a zero-gap bond outside viewing areas of the first and second optical films. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A light management film package for managing light within a display, comprising:
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a first optical film having a first surface; and
a second optical film disposed over the first optical film, the second optical film having a first surface bonded to the first surface of the first optical film at a zero-gap film bond, a center viewing portion of the second optical film remaining unbonded to the first optical film. - View Dependent Claims (21, 22, 23, 24, 25, 29, 30, 31, 32, 33, 34)
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- 26. A film package as recited in claim 26, wherein the thermal bond is an ultrasonic bond.
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35. A display system, comprising:
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an illumination unit;
a display unit; and
a light management unit disposed between the illumination unit and the display unit to manage light passing from the illumination unit to the display unit, the light management unit comprising a stack of at least first and second optical films, the first optical film having a first surface and the second optical film being disposed over the first optical film, the second optical film having a first surface bonded to the first surface of the first optical film at a zero-gap film bond, a center viewing portion of the second optical film remaining unbonded to the first optical film. - View Dependent Claims (36, 37, 38, 39, 40, 41)
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42. A light management film package for managing light within a display, comprising:
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a first optical film having a first surface; and
a second optical film disposed over the first optical film, the second optical film having a first surface bonded to the first surface of the first optical film by a zero-gap bonding means for bonding the first and second optical films together, a center viewing portion of the second optical film remaining unbonded to the first optical film.
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43. A light management film package for managing light within a display, comprising:
a stack of at least first and second optical films having respective first and second viewing areas in alignment to form a stack viewing area, zero-gap bond means for bonding films between the first and second optical films being disposed outside the first and second viewing areas.
Specification