LED backlit LCD's scare me a little in that although they're really really cool, I'm worried that now there's the possibility of 1 LED going out leaving a dark spot on the screen. Manufacturers have "dead pixel" policies, I wonder what a dead LED policy will be like? Think the LEDs will be maintainable individually or will they require a complete module swap?
I know some people who made some cavers' headlamps using some of the first super-bright white LEDs to come onto the market. They had a reliability problem because they underestimated the amount of heat-sinking requied; the LEDs will seem to work fine when they're hot, but the temperature will deform the bond wires or the substrate until they fail. I imagine that this is the sort of thing that another poster is describing in traffic signals.
I would hope that this sort of problem would be avoided in a monitor design. The essential point is that the basic light-emitting technology is itself very reliable; about as reliable as a transistor probably.
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LED backlit LCD's scare me a little in that although they're really really cool, I'm worried that now there's the possibility of 1 LED going out leaving a dark spot on the screen. Manufacturers have "dead pixel" policies, I wonder what a dead LED policy will be like? Think the LEDs will be maintainable individually or will they require a complete module swap?
I know some people who made some cavers' headlamps using some of the first super-bright white LEDs to come onto the market. They had a reliability problem because they underestimated the amount of heat-sinking requied; the LEDs will seem to work fine when they're hot, but the temperature will deform the bond wires or the substrate until they fail. I imagine that this is the sort of thing that another poster is describing in traffic signals.
I would hope that this sort of problem would be avoided in a monitor design. The essential point is that the basic light-emitting technology is itself very reliable; about as reliable as a transistor probably.