Portable computer having an LCD projection display system

Details Portable computer having an LCD projection display system Portable computer having an LCD projection display system

1995-06-19

1996-04-23

Hjerpe, Richard

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345905, 3647081, 361681, G09G 336

Patent

active

055108067

ABSTRACT:
A portable computer has a base housing portion to which a display screen structure is pivotally connected. The display screen structure is defined by a solid, relatively thin plastic screen panel instead of the usual lid/display screen housing having mounted therein an LCD panel, a panel illumination system and associated display electronics. To form a selectively variable image on the screen panel a relatively small LCD projection structure is mounted on the top side of the base housing for pivotal movement relative thereto between an upwardly extending use orientation and a downwardly retracted storage and transport orientation. The LCD projection structure includes a lens housing having a lens disposed therein, a small LCD projection panel supported on an underside portion of the lens, and a high intensity light source supported beneath the LCD projection panel. During use of the computer, screen driver circuitry within the base housing is used to form a selectively variable image on the LCD panel, and the illumination source causes the image to be projected in magnified form onto the raised screen panel.

REFERENCES:
patent: 4027959 (1977-06-01), Fisher et al.
patent: 4120574 (1978-10-01), Hofmann et al.
patent: 4403216 (1983-09-01), Yokoi
patent: 4803652 (1989-02-01), Maeser et al.
patent: 5262926 (1993-11-01), Hall

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