Flat Panel Displays - alternatives to AMLCDs Message Board

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Technology Stocks : Flat Panel Displays - alternatives to AMLCDs

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To: barb loucks who wrote (191)	1/10/1997 2:22:00 AM
From: bob mackey	of 473

> Which [] would perform better, a diode or triode device, and why? [in reference to various types of electron emission displays] Good question, barb. For a simple lamp, it doesn't matter much. But for a display, it is much easier to modulate a low voltage gate (in a Triode) than to quickly change the high voltage level (Diode). Typical CMOS circuits used to drive displays are capable of swinging about 18 Volts, and they are quite cheap. Circuits that can control several thousand volts are MUCH more expensive. Also the energy spent in driving address lines up and down increases with voltage. Lower switching voltages are MUCH more efficient, especially for high speed displays. Incidentally, FEDs are expected to really shine at high speeds. LCDs are limited to relatively low speed operation. When it comes to technical questions for the display engineers, I'll probably have several good ones. But there are certainly others hanging around this thread that will have many other good technical questions, as well as good business questions. Bring 'em on. -bob

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