Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1998-09-16
2000-11-07
Hjerpe, Richard A.
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
359296, G09G 334, G02B 2600
Patent
active
061443611
ABSTRACT:
A transmissive electrophoretic display is generally comprised of a regular lateral array of transmissive electrophoretic cells; each uniformly illuminated from the rear by a backlight. Each cell is comprised of a suspension of charged, black or colored light-absorbing pigment particles in a light-transmissive fluid. Each cell is also comprised of a light-transmissive front and rear window, at least one non-obstructing counter electrode, and at least one non-obstructing, vertically-disposed collecting electrode. With the application of appropriate voltages to the collecting and counter electrodes, each cell can be switched between a light and dark state. In the dark state, the light-absorbing pigment particles are distributed to cover the horizontal area of the cell, thus absorbing light from the backlight and preventing it from reaching the viewer. In the light state, the light-absorbing pigment particles are collected on vertical surfaces within the cell, thus allowing light from the backlight to pass through the cell and reach the viewer.
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Gordon II Joseph Grover
Hart Mark Whitney
Swanson Sally Ann
Berthold Thomas R.
Bowers Benjamin D.
Hjerpe Richard A.
International Business Machines - Corporation
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