Observer-tracked privacy display

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12259608
APP PUB NO 20240288720A1
SERIAL NO

18599775

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A display device comprising a spatial light modulator having a display polariser arranged on one side is provided with an additional polariser arranged on the same side as the display polariser and a polar control retarder between the additional polariser and the display polariser. The polar control retarder includes a liquid crystal retarder having two surface alignment layers disposed adjacent to a layer of liquid crystal material on opposite sides. The surface alignment layers provide alignment in the adjacent liquid crystal material with a twist. The out-of-plane orientation of the twisted layer of liquid crystal material is modified across at least one region of the display device to provide a transmission function in response to the measured location of an off-axis snooper, achieving increased size of polar region for which desired uniformity of security factor, or reduced distraction across the display to the driver in an automotive application is achieved.

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Patent Owner(s)

Patent OwnerAddress
REALD SPARK LLC1930 CENTRAL AVENUE SUITE A-2 BOULDER CO 80301

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Harrold, Jonathan Leamington Spa, GB 197 7056
Ramsey, Robert A Boulder, US 52 1563
Robinson, Michael G Boulder, US 272 7550
Woodgate, Graham J Henley-on-Thames, GB 193 5219

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