krishna_chennai
Disciple
preetmohit said:
Any help on this?
Got my Dell 2209WA
- Thread starter techster
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Any help on this?
^ A dead pixel is a pixel that doesn't display the intended colour and instead stays permanently black/off.
For eg: If the image on screen is a plain blue blackground, the dead pixel will stick out by still being black in colour.
A nice tool to test for dead pixels : Dead pixel tester with display aids and illusions.
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Ghosting is a sort of image persistence on LCDs when displaying a moving image. It depends on how fast the LCD pixels can change what they're displaying. Thats why LCD panels have response times like 2ms, 5ms specified. A panel with a faster response time will not show noticeable ghosting (of course its just a guideline, and different panels have different results even with widely varying response times)
Here's an example of what ghosting looks like :
A manufacturer treats both equally.
Whether they replace the panel for either defect depends on their warranty policy. Certain manufacturers don't replace the panel unless there are more than 3 pixel defects; certain others (like Dell does for certain 'Ultrasharp' series with their premium panel warranty) will replace it for any pixel defect.
For eg: If the image on screen is a plain blue blackground, the dead pixel will stick out by still being black in colour.
A nice tool to test for dead pixels : Dead pixel tester with display aids and illusions.
----
Ghosting is a sort of image persistence on LCDs when displaying a moving image. It depends on how fast the LCD pixels can change what they're displaying. Thats why LCD panels have response times like 2ms, 5ms specified. A panel with a faster response time will not show noticeable ghosting (of course its just a guideline, and different panels have different results even with widely varying response times)
Here's an example of what ghosting looks like :
Yep, Bright pixels are supposed to be the opposite. A dead pixel is permanently 'off', a bright pixel is permanently 'on'.Hacker said:
A manufacturer treats both equally.
Whether they replace the panel for either defect depends on their warranty policy. Certain manufacturers don't replace the panel unless there are more than 3 pixel defects; certain others (like Dell does for certain 'Ultrasharp' series with their premium panel warranty) will replace it for any pixel defect.