Composite diffuser plates and direct-lit liquid crystal displays using same
First Claim
1. A light management unit for use between a light source and a liquid crystal display panel, comprising:
- a first optical subassembly comprising at least a first substrate, the first optical subassembly also comprising one or more diffusing elements;
a second optical subassembly comprising at least a second substrate, the second optical subassembly being mounted to the first subassembly in such a manner as to produce a gap between the first and second optical subassemblies.
1 Assignment
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Accused Products
Abstract
In a directly-illuminated liquid crystal display (LCD), for example an LCD monitor or an LCD-TV, a number of light management layers lie between the light source and the LCD panel to provide bright, uniform illumination. The light management layers, including, for example, a diffuser, a reflective polarizer and a brightness enhancing layer, are contained in a light management unit that is formed from two subassemblies. The two subassemblies each contain a substrate and are attached together so as to leave a gap between the two subassemblies. The diffuser is located in one of the subassemblies, and the other light management layers may be in either of the subassemblies, or may be disposed in the gap between the subassemblies.
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Citations
57 Claims
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1. A light management unit for use between a light source and a liquid crystal display panel, comprising:
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a first optical subassembly comprising at least a first substrate, the first optical subassembly also comprising one or more diffusing elements;
a second optical subassembly comprising at least a second substrate, the second optical subassembly being mounted to the first subassembly in such a manner as to produce a gap between the first and second optical subassemblies. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A display system, comprising:
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a backlight;
a liquid crystal display (LCD) panel comprising upper and lower plates and a liquid crystal layer disposed between the upper and lower plates; and
a light management unit disposed between the backlight and the LCD panel, the light management unit having a first optical subassembly comprising a first substrate and a second optical subassembly comprising a second substrate, the second optical subassembly being mounted to the first subassembly in such a manner as to produce a gap between the first and second optical subassemblies, the light management unit diffusing light passing from the backlight to the LCD panel. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57)
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Specification