US Patent No: 8,059,232
Number of patents in Portfolio can not be more than 2000
Electronic device and LC shutter for polarization-sensitive switching between transparent and diffusive states
Stats
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Nov 15, 2011
Issued date -
Feb 8, 2008
filing date -
12/028,084
serial no -
In Force
status
Importance
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Abstract
An electronic device (200) includes a display (202) and an LC shutter (204), at least a portion of which is operatively positioned over the display (202). The LC shutter (204) provides switching between a transparent state and a diffusive state with high image integrity, and high transmission in the transparent state. In one embodiment, the electronic device (200) further includes control logic (206) operatively coupled to the LC shutter (204) to provide control signals (212) to the LC shutter (204) to effect the transparent state. The LC shutter (204) includes a first dichroic polarizer (300), such as a broadband dichroic polarizer, a specular reflective polarizer (302), such as a broadband reflective polarizer, an LC cell (304), and a diffusive reflective polarizer (306). The LC cell (304) is interposed between the first dichroic polarizer (300) and the specular reflective polarizer (302). The diffusive reflective polarizer (306) is interposed between the LC cell (304) and the specular reflective polarizer (302). Related methods are also set forth.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
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Patent Citation Ranking
Maintenance Fees
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| Fee | Large entity fee | small entity fee | micro entity fee |
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