LED backlit LCD - will it last forever?
I saw the question about a 'dimming display' and the responses made me think - will LED lit LCDs last longer - or are the crystals still aging quickly?
The reason is I am wondering is that there are no long lasting 'new' products any more. Digital age products don't wear out, they age and die (IF YOU USE THEM OR NOT - this is my point).
The simple answer is nothing last forever but the LED should last longer than the LCD. In the old days we warned people about using a screensaver to avoid burn-in of crts---later we would inform users not to leave LCDs on when not in use because backlighting had a measured life. Each new product will come with its own guidelines for longer life and I know of no way to make a product that doesn't wear out sooner or later. Ralph
LEDs are solid-state devices, CFLs are gas-filled tubes...
LEDs should have an extremely long life, and provide even light output during that lifetime. They are similar to transistors, however, and there is always the sight possibility of a single LED component itself failing. It should be extremely rare, however, as LEDs require very low voltage and current.
CFLs require high voltage and current to excite the gases - usually the inverter board driving the tube fails before the tube itself - and if it fails slowly, the CFL's light quality will suffer before complete failure.
The LCD itself may slowly fail in tiny spots of stuck or dark pixels over time, as the gate diodes degrade, but the most common reason for extensive LCD failure is physical damage. The LED backlight will probably outlast the LCD gates!