Computer graphics processing and selective visual display system – Display peripheral interface input device – Touch panel
Patent
1992-11-25
1996-10-15
Hjerpe, Richard
Computer graphics processing and selective visual display system
Display peripheral interface input device
Touch panel
445 24, 385120, 156197, 156291, G09G 500
Patent
active
055658920
ABSTRACT:
A display device including a dot matrix type LCD display, and a digitizing tablet for interpreting movement of a stylus across the display device. Aligned with the display in a viewing direction is disposed a light transmissive panel including a structure having a plurality of light transmissive regions containing a gaseous substance, e.g. air. The regions are in register with the dot matrix generation of the LCD display. The walls of the regions may be coated with reflective material to increase their reflective properties. The structure is sealed at its open ends with sheets of transparent material to form the panel, which provides a writing surface for the stylus. Two methods of manufacturing the panel are disclosed. The display device is light in weight, low in cost and parallax errors are minimized.
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Foote Douglas S.
Hjerpe Richard
Lao Lun-Yi
NCR Corporation
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