QUOTE(Orange Pumpkin @ Jan 28 2009, 08:44 PM)
Very interesting ,, do the LCD screen age slower ?? And does it have the problem You mentioned ??
I know it is not a place for a tutorial about screens so could You please give a link with the LCD/OLED + and - ??
LCD just blocks light in varying intensities from the backlight it is a sort of "light valve" So no LCD screens don't really burn in or age like that (this is also why "screen savers" are worthless on today's LCD computer monitors). I suppose the white LED backlights used do age but they do last in the range of 100,000 hours or so. They then just gradually get dimmer over time.
Current OLEDs are very new technology. The problem is the blue emitter. They last only around 20,000 hours. So what you will see is over time whites will turn more and more yellow (blue gets weak, red and green do not nearly as fast, red+green =yellow). It is not like the screen will be perfect up to 20,000 hours then go bad. The screen will gradually yellow and the 20,000 hour mark is when the blue emitter is at half of the brightness it was new. At this point the color will be really bad. I suppose what can be done at this point is to have an application that will dim the red and green brightness to match the blue (sliders adjusted by user). The screen will obviously be dimmer but at least the color will be better.
OLEDs have some very good qualities. The response time kills any LCD (or plasma or CRT even) it is very fast with no image retention or motion blur. The viewing angle is perfect, unlike an LCD that shifts color and contrast when viewed off axis. They are thin as you don't have to have a backlight panel like an LCD, the display makes it's own light. OLEDs are power efficient (important in a handheld) only the pixels that are on are using power. On an LCD the backlight is always full power no matter what. Then worse yet you need to use MORE power to turn on the LCD pixels to block the always on backlight in certain spots (pixels). The OLED black level is the best you can get. Basicaly black is true black. If you have an all black image in a dark room on an LCD you can still see a glow from the screen. With an OLED you couldn't even tell it was on, this makes contrast levels superior to anything. So really the only issue with OLED is the burn-in/lifetime issues. When/if they can fix that other display tech like LCD, plasma, CRT are dead.
Edited by DaveC, 29 January 2009 - 03:35 AM.