Liquid crystal displays with laminated diffuser plates
First Claim
Patent Images
1. A liquid crystal display (LCD) unit, comprising:
- a light source;
an LCD panel comprising an upper plate, a lower plate and a liquid crystal layer disposed between the upper and lower plates, the lower plate facing the light source, the lower plate comprising an absorbing polarizer; and
an arrangement of light management films disposed between the light source and the LCD panel so that the light source illuminates the LCD panel through the arrangement of light management films, the arrangement of light management films being attached to the lower plate of the LCD panel, the arrangement of light management films comprising at least a first diffuser layer.
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Abstract
In a liquid crystal display (LCD), for example an LCD monitor or an LCD-TV, a number of light management films, including a diffuser layer, lie between the light source and the LCD panel to provide bright, uniform illumination. In some embodiments, the diffuser layer is attached to the lower side of the LCD panel. Some, or all, of the light management layers may be attached together as a laminated stack of films. In some embodiments, the diffuser layer is formed with a recessed region on one side and another optical film positioned within the recessed region.
109 Citations
44 Claims
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1. A liquid crystal display (LCD) unit, comprising:
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a light source;
an LCD panel comprising an upper plate, a lower plate and a liquid crystal layer disposed between the upper and lower plates, the lower plate facing the light source, the lower plate comprising an absorbing polarizer; and
an arrangement of light management films disposed between the light source and the LCD panel so that the light source illuminates the LCD panel through the arrangement of light management films, the arrangement of light management films being attached to the lower plate of the LCD panel, the arrangement of light management films comprising at least a first diffuser layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A liquid crystal display (LCD) unit, comprising:
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a light source;
an LCD panel; and
an arrangement of light management layers disposed between the light source and the LCD panel so that the light source illuminates the LCD panel through the arrangement of light management layers, the arrangement of light management layers comprising a diffuser plate and at least one of a brightness enhancing layer and a reflective polarizer attached together, the diffuser plate comprising a substantially transparent substrate attached to a first diffusing layer that diffuses light propagating from the one or more light sources towards the LCD panel. - View Dependent Claims (17)
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18. An arrangement of light management optical films, comprising:
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a first optical layer having a recessed region on one side; and
a second optical layer disposed within the recessed region. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A display unit, comprising:
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a display panel;
a light source disposed behind the display panel; and
an arrangement of light management layers disposed between the light source and the display panel, the arrangement of light management layers comprising a first optical layer having a recessed region on one side a second optical layer disposed within the recessed region. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44)
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Specification