How To Spot Mura; How To Avoid Mura - Philips BDL4771V User Manual

User Manual BDL4771V
Mura has been around since the introduction of LCD technology and with screens getting bigger and in operation 24/7,
many displays are running in low light conditions. This all adds to the possibility of Mura affecting displays.
6.7.1.

HOW TO SPOT MURA

There are many symptoms of Mura and also multiple causes. Several of these are listed below:
• Impurities or foreign particles in the crystal matrix
• Uneven distribution of LCD matrix during manufacturing
• Non-uniform luminance distribution of the backlight
• Panel assembly induced stress
• Flaws within the LCD cells
• Thermal induced stress - high temperature operation over long periods of time
6.7.2.

HOW TO AVOID MURA

Although we can not guarantee the complete eradication of Mura every time, in general the appearance of Mura can be
minimized by these methods:
• Lower the backlight brightness
• Use a screen saver
• Reduce the ambient temperature around the unit
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