LCD Burning Problems

[Squall333]

i found this quote

What is burn-in?



The phosphors used in CRTs and plasma displays becomes less bright with usage. The phenomenon is a lot like “tire wear”. If you drive fast, the wear-per-mile increases, but there is some wear at any speed. The speed of a car corresponds to white in a TV image.



CRT burn-in used to be rare, but the demand for brighter images has made manufacturers less conservative. Now CRTs that have been showing a Windows desktop for a couple years will often show a lightly burned-in task bar when the screen is painted all white. The CRTs in big-screen TVs are pushed even harder, especially in the largest sets.



All CRT and plasma sets dim with usage. Making the screen age evenly is the user’s responsibility. The user must ensure that a fixed, unmoving shape is not displayed for many hours, or that shape will slowly become burned into the screen.



LCD, LCoS, and DLP sets do not suffer burn-in. (Some LCD and LCoS sets exhibit “image retention”, but it goes away in an hour or so.)

[Cogboy]

LCD, LCoS, and DLP sets do not suffer burn-in. (Some LCD and LCoS sets exhibit “image retention”, but it goes away in an hour or so.)

This is the part that applies to the psp. crt stands for cathode ray tube, this is the type of screen in your non-flat tv or monitor.

[TerryMathews]

An LCD is made up of three layers (or more if using different colorspaces) of electrically responsive grids of optical filters. Basically, a pixel is "green", because the red and blue filters are active, only allowing green light to pass through.

An LCD can suffer a kind of burn-in where the filtering portion becomes bleached by the backlight, or by sufficiently bright light on the frontt portion (room lighting or sunlight). I cannot say I've ever seen an LCD that was bleached, and it would probably take a lot of UV exposure over a significant period of time, but it is possible.