Liquid crystal cells – elements and systems – Particular structure – Particular illumination
Reexamination Certificate
2004-10-15
2008-10-14
Nelms, David C. (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Particular illumination
C349S063000, C349S064000, C349S065000
Reexamination Certificate
active
07436469
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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Chen Chingwen
Emmons Robert M.
Epstein Kenneth A.
Fabick Ryan T.
Gehlsen Mark D.
3M Innovative Properties Company
Nelms David C.
Pralle Jay R.
Vu Phu
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