Transistor design for use in the construction of an electronically driven display
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United States of America Patent
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Jun 15, 2004
Grant Date -
Jul 31, 2003
app pub date -
Jan 30, 2003
filing date -
Aug 31, 1999
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A transistor having a channel width, W, and a channel length, L, defined by non-rectangular electrodes. The transistor is a thin film field effect transistor having an insulated gate electrode. One of a source and drain electrodes is connected to a display electrode and one is connected to a data line. The source and drain electrodes can be interdigitated to provide a desired W/L ratio. The gate is connected to a select line. An overlap region between a display electrode and a select line for another pixel defines a capacitor. The transistor is fabricated to be situated behind the display electrode so as to maximize an aperture ratio. The design enables the use of conventional printing methods, such as screen printing, ink jet printing, printing through a stencil, flexo-gravure printing and offset printing.
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