Backlight Bleeding: An LCD Problem

The entire surface of an LCD panel is backlit from behind by a light source (CCFL or LED) and the LCD blocks out the light that is not needed when displaying a particular image. Backlight bleeding occurs when this light is not 100% blocked, allowing excess light to "bleed" through the LCD. This backlight bleeding issue leaves spots of lighter areas on a dark or black background. Unfortunately, almost all LCD panels suffer from at least a small amount of backlight bleed because the opacity of LCD panels is not enough to block all light, though it only causes problems if it can be easily detected by the human eye. The graphic to the right shows an example of what an LCD display with excessive backlight bleeding looks like with a dark, static background. As you can see, the top left and bottom right corner are lighter in color than the center of the display.

Fixing Backlight Bleed

In general, there is no definite fix for backlight bleeding, although some users in this thread have had success improving the level of bleed on the model 2005FPW Dell LCD using the method listed. The best way to "fix" backlight bleed is to have the monitor exchanged if the retailer will allow it. You should also avoid LCD monitors which are known to have backlight bleeding problems.

How To Avoid Backlight Bleed When Buying A New Monitor

Read reviews on the model of LCD display you plan on purchasing beforehand and look for any complaints about backlight bleeding. Buy from a retailer that will allow you to exchange the display if there are any major problems and, if possible, try to view a display model or two before making a purchase. Even this does not guarantee you will receive an LCD completely free from bleeding, but it can limit the chances and give you a higher success rate.

LCD Monitor Recommendations

Small Budget AOC I2353PH

Medium Budget Asus PA246Q

Large Budget Dell U3011

More Backlight Bleeding Information and Resources

• Information About Dell Dell 2005FPW Backlight Bleed
• Test for Backlight Bleeding
• Possible Fix of Dell 2005FPW Backlight Bleeding