Package of optical films with zero-gap bond outside viewing area
First Claim
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1. A light management film package for managing light within a display between a backlight and a display element, comprising:
- a stack of at least first and second light management optical films having respective first and second viewing areas in aligmnent to form a stack viewing area, a zero-gap bond between the first and second optical films being disposed only outside the first and second viewing areas, the stack being unattached to the backlight.
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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.
75 Citations
47 Claims
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1. A light management film package for managing light within a display between a backlight and a display element, comprising:
a stack of at least first and second light management optical films having respective first and second viewing areas in aligmnent to form a stack viewing area, a zero-gap bond between the first and second optical films being disposed only outside the first and second viewing areas, the stack being unattached to the backlight. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. 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 light management optical films having respective at least first and second viewing areas in alignment to form a stack viewing area corresponding to a viewing area of the display unit, a zero-gap bond between the first and second optical films being disposed only outside the first and second viewing areas, the first and second films being bonded at a position separate from any attachment between the stack and either one of the illumination unit and the display unit. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. 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, the first and second films being banded without being attached to other elements of the display, one of the first and second optical films comprising one of a diffuser film, a reflective polarizer and a brightness enhancing film. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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39. 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, the first and second films being bonded at a position separate from any attachment between the stack and either one of the illumination unit and the display unit. - View Dependent Claims (40, 41, 42, 43, 44, 45)
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46. A light management film package for managing light within a display between a backlight and a display element, comprising:
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a first light management optical film having a first surface; and a second light management 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, the zero gap bond means not bonding the first and second films to the backlight.
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47. A light management film package for managing light within a display between a backlight and a display element, comprising:
a stack of at least first and second light management 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 only outside the first and second viewing areas, the zero gap bond means not bonding the first and second films to the backlight.
Specification