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Do LCD backlights dim over time?

G

GushpinBob

2[H]4U
Joined
Dec 11, 2007
Messages
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I've got a Gateway laptop that is nearly three years old with a display that seems to be not as bright as the day I received it. The reason I say "that seems" is because I'm not 100% sure if the backlight is actually becoming weaker over time or if my eyes are playing tricks on me. Also, I've noticed within the first minute of resuming or booting up the laptop the screen will be extremely dim at start but then slowly increase in brightness (kinda like one of those "instant on" CFLs). I'm not sure if that's normal on a typical, fluorescent backlit display; it's a phenomena I've never really noticed on any other LCD.

edit: Sorry, I wanted to mention that I've already googled this question only to come up with results about built-in dimming functions in laptops and broken LCDs.
 
So if I were to correct this problem, what would I replace first? The backlight or the inverter? The screen doesn't flicker or black out. It's just dim.
 
Do you still have the warranty lying around? Might be expired by now, but there could be information on it about how to get the laptop serviced. Send it into a shop, they'll tell you exactly what parts are aging and need to be replaced to make the unit display like new again.

But I think you'll find it'll be costly enough that you'll consider just living with it and saving up for a replacement laptop with a bright brand new screen.
 
Yes they get dimmer. I went dual monitor and the difference was pretty distinct even tho they were the same model.
 
Sadly one of the reasons that cheaper led backlights are very much needed on the market.
 
anyone care to shed light on why? i think its because the cathode light is basically charged particles reacting with electricity, and eventually the particles lose their strength.. or eletrons.. or something...
 
The particles lose their reactivity to the charge over time. Said differently exciting them over and over again gradually dimishes their ability to react.
 
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