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Topic: LCD projector -- best rest state
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Scott Jentsch
Phenomenal Film Handler
![](http://www.film-tech.com/ubbmembers/1681.jpg)
Posts: 1061
From: New Berlin, WI, USA
Registered: Apr 2003
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posted 07-31-2012 10:50 AM
Whether the LCD is blocking the light or passing it through, the panels are still bearing the brunt of the light hitting it.
Unless the design of LCD panels has changed since I last worked with them, the idle state of an LCD panel is transparent. When current is applied, that portion of the panel becomes opaque (or as opaque as it can).
So that means that the panels are still being heated by the lamp, no matter what. You are then left with whether activating the panels reduces the life of those panels, which I would believe it would.
If it were me, I would allow the light to pass through completely, and shutter it mechanically, but I'll bet the most amount of stress on the panel(s) is going to be from the heat of the light itself, not the activation of the pixels in the panel(s).
Can the projectors go into a power-save mode, where the lamp dims when it doesn't get a signal for a set amount of time? I wouldn't want to turn the lamp off because of the additional lamp strikes it would create, but dimming the brightness of the bulb should be less stressful on all the components in the projector.
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