L-3 Communications Corporation

L3 Technologies, Inc.

Carlos Galleno

Mark W Fletcher

A fault-tolerant display system includes a dual thin film transistor (TFT) panel with pixel cells having two independently-controlled switching transistors; as such, primary source and gate drivers are operative to drive the display with first TFT transistors, while secondary source and gate drivers are operative to drive the display with second TFT transistors. As the display incorporates an additional TFT within the pixel cell which is driven independently, reliability is increased even at the pixel level. In this way, individual pixels of the LCD panel are driven simultaneously and independently by two pairs of source drivers and gate drivers, such that if one of the driver pairs fails due to some fault, the other driver pair can continue to drive the LCD panel without loss of information despite the failure of the first driver pair.

Fault-tolerant LCD display with dual transistor pixel cells

A fault-tolerant display system includes a TFT panel, a first driver couplet including a first gate driver and a first source driver, and a second driver couplet including a second gate driver and a second source driver. The first gate driver and the second gate driver feed into the LCD panel from opposite directions and the first source driver and the second source driver feed into the LCD panel from opposite directions. The first driver couplet and the second driver couplet each have their own independent power supplies, independent from one another. In this way, individual pixels of the LCD panel are driven simultaneously by two pairs of source drivers and gate drivers, such that if one of the driver pairs fails due to some fault, the other driver pair can continue to drive the LCD panel without loss of information despite the failure of the one driver pair.

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Alpharetta, GA, United States of America

Carlos Galleno