Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1997-08-26
2000-07-11
Saras, Steven J.
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345 48, G09G 334
Patent
active
060880139
ABSTRACT:
Apparatus for controlling an image display device having at least one element with a reflective state in which incident light undergoes total internal reflection and a non-reflective state in which the total internal reflection is prevented. A member is positioned adjacent the element for deformation of the member between a first position in which a gap remains between the member and the element and a second position in which the member is in optical contact with the element. The apparatus incorporates a support structure having one or more display chambers. Each display chamber contains one of the elements and members aforesaid. A first aperture is provided in the support structure for air communication between the display chamber and a second chamber provided in the support structure. A preferably elastomeric valve member is provided in the second chamber, for deformation of the valve member between a closed position in which the valve member is biased against the first aperture to prevent air communication through the first aperture and an open position in which the valve member is biased away from the first aperture to permit air communication through the first aperture. A second aperture is provided in the support structure for air communication against a base of the valve member; and, a third aperture is provided in the support structure for air communication through the second chamber and through the first aperture when the valve member is in the open position.
REFERENCES:
patent: 3959902 (1976-06-01), Suzuki
patent: 4003149 (1977-01-01), De Vries
patent: 5658719 (1997-08-01), Sawyer
Coope Robin John Noel
Montour Michael James
Nelson Alecia D.
Saras Steven J.
The University of British Columbia
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