Xerox Corporation

Hugo L Steemers

Richard H Bruce

Russel A Martin

Louis D Silverstein

Alan G Lewis

William D Turner

Thomas G Fiske

Malcolm J Thompson

Michael G Hack

Jackson H Ho

Ronald T Fulks

William W Yao

Tzu-Chin Chuang

Victor M DaCosta

Robert R Allen, Deceased

Susan M Stuber

An array of light control units has an area large enough to present images for direct viewing. The array also has light control units sufficiently dense that ordinary acuity artifacts are not noticeable in presented images when the array is directly viewed at usual viewing distances by a human with normal vision. Signal circuitry can provide signals to the light control units. The array can present an image that includes M colors, where M is more than three, even though each light control unit can only cause presentation of one of a segment with one of a set of N colors, where N is less than M. Data defining an input image with M colors are used to obtain data defining an output image that is a version of the input image but includes, for each light control unit, a color data item indicating one of its set of N colors. The signal circuitry provides signals to the light control units so that each light control unit presents a segment with the color indicated by its color data item. As a result, the array presents the output image so that its appearance to a human with normal vision viewing the array at usual viewing distances is substantially identical to the appearance the input image would have if presented.

Universal display that presents all image types with high image fidelity

A thin-film structure on an insulating substrate includes an array of binary control units with an area of at least 90 cm.sup.2 and a density of at least 60 binary control units per cm. One implementation has an area of approximately 510 cm.sup.2, a diagonal of approximately 33 cm, and a total of approximately 6.3 million binary control units. Each binary control unit has a lead for receiving a unit drive signal, to which it responds by causing presentation of a segment of images presented by the array. Each binary control unit can present a segment with either a first color having a maximum intensity or a second color having a minimum intensity. Each binary control unit's unit drive signal causes the binary control unit to present its first and second colors. The substrate can be glass. Each binary control unit can include an amorphous silicon thin-film transistor (TFT) and a storage capacitor. Each binary control unit can be square. The thin-film structure can be used in an active matrix liquid crystal display (AMLCD), monochrome or, with an appropriate filter, color.

Thin-film structure with dense array of binary control units for

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Palo Alto, CA, United States of America

Hugo L Steemers