Massachusetts Institute of Technology

Kopin Corporation

Other

John C Fan

Robert W McClelland

Carl O Bozler

Paul M Zavracky

Jeffrey Jay Jacobsen

Brenda D Dingle

Ronald P Gale

Jagdish Narayan

Bor-Yeu Tsaur

Stephen A Pombo

Mark B Spitzer

Jack P Salerno

Frank J Bachner

Matthew M Zavracky

Michael W Geis

Duy-Phach Vu

Rodney J Bumgardner

Lisa P Allen

Shambhu Shastry

Frances M Davis

Victor E Henrich

Ralph L Chapman

Peter A Ronzani

Ngwe K Cheong

Alan Richard

Richard E McCullough

Jhang W Lee

George W Turner

Richard McClullough

Herbert J Zeiger

Herbert J Zieger

Jhang Woo Lee

Portable communication display device

The invention relates to a microdisplay system that utilizes a small high resolution active matrix liquid crystal display with an illumination system and a magnifying optical system to provide a hand held communication display device. The system can employ an LED illumination system and cellular communication or processor circuits within a compact housing to provide communication devices such as pagers, telephones, televisions, and hand held computer or card reader devices with a compact high resolution data and/or video display.

Wireless telephone display system

A monocular head mounted display system in which a matrix display element is mounted within a housing that is positioned relative to one eye of the user to display information. The display is connected to a video or information source such that the user can view information or images shown on the display. The display can be mounted to a frame so that the user can move the display in and out of the user's filed of view without adjusting the supporting harness that holds the display on the user's head.

Monocular portable communication and display system

The present invention relates to a light valve projector in which a small high resolution active matrix transmission display is used with a light source, coupling optics and a projection lens to provide a compact presentation system. A preferred embodiment of the system comprises a three light valve system with an arc lamp within a compact housing in which dichroic mirrors separate light from the source into three primary colors and directs the separated light through three active matrix displays manufactured by a thin film transfer process and having a small active area.

Compact high resolution light valve projector

A passive matrix display device obtains fast response times and high resolutions by fabricating the control circuitry and passive matrix electrodes together as a single monolithic device. The electrodes and the control circuitry are fabricated as an SOI structure on a substrate. The structure is removed from the substrate and transferred to a glass substrate using a lift-off and transfer process. Performance is further increased by incorporating an active addressing procedure instead of standard multiplex addressing.

Matrix display systems

A display panel is formed using essentially single crystal thin-film material that is transferred to substrates for display fabrication. Pixel arrays form light valves or switches that can be fabricated with control electronics in the thin-film material prior to transfer. The resulting circuit panel is than incorporated into a display panel with a light emitting or liquid crystal material to provide the desired display.

Single crystal silicon arrayed devices for display panels

A method of producing sheets of crystalline material is disclosed, as well as devices employing such sheets. In the method, a growth mask is formed upon a substrate and crystalline material is grown at areas of the substrate exposed through the mask and laterally over the surface of the mask to form a sheet of crystalline material. This sheet is optionally separated so that the substrate can be reused. The method has particular importance in forming sheets of crystalline semiconductor material for use in solid state devices.

Method of producing sheets of crystalline material and devices made

A display panel is formed using essentially single crystal thin-film material that is transferred to substrates for display fabrication. Pixel arrays form light valves or switches that can be fabricated with control electronics in the thin-film material prior to transfer. The resulting circuit panel is then incorporated into a display panel with a light emitting or liquid crystal material to provide the desired display.

Single crystal silicon transistors for display panels

Light emitting diodes (LEDs) and LED bars and LED arrays formed of semiconductive material, such as III-V, and particularly AlGaAs/GaAs material, are formed in very thin structures using organometallic vapor deposition (OMCVD). Semiconductor p-n junctions are formed as deposited using carbon as the p-type impurity dopant. Various lift-off methods are described which permit back side processing when the growth substrate is removed and also enable device registration for LED bars and arrays to be maintained.

Method of making light emitting diode bars and arrays

An improved method of zone-melting recrystallizing of a silicon film on an insulator in which the film is implanted and annealed to achieve a reduction of the density of defects within the film.

Zone-melting recrystallization process

A display panel is formed using a single crystal thin-film material that may be transferred to substrates for display fabrication. Pixel arrays form light valves or switches that can be fabricated with control electronics in the thin-film material prior to transfer. The resulting circuit panel is then incorporated into a display panel with a light emitting or liquid crystal material to provide the desired display.

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Chestnut Hill, MA, United States of America

John C Fan