How do I get Dead Pixels?

Discussion in 'Displays' started by DenniO, Aug 2, 2006.

  1. DenniO

    DenniO Auditioning

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    Can dead pixels occur *only* with rough handling of the LCD?


    Is it impossible for dead pixels to occur as normal signs of aging?
     
  2. Michael TLV

    Michael TLV THX Video Instructor/Calibrator

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    Greetings

    There can be a million of them or more ... some will fail over time ... just like resistors fail ... capacitors fail ...

    entropy ...

    Regards
     
  3. DenniO

    DenniO Auditioning

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    I mean from your personal experience using Projector LCD.
    I have an LCD monitor, which has 3 dead pixels. These pixels have been there from the beginning, and I had the LCD monitor for a long time.


    Knowing nothing about LCD Projectors, I need your personal experience with one.
     
  4. Allan Jayne

    Allan Jayne Cinematographer

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    Dead pixels occur spontaneously and randomly over time. A few may be present from day one.

    Rough handling doees not result in scattered dead pixels (but may result in large areas of the screen going dead.)

    Video hints:
    http://members.aol.com/ajaynejr/video.htm
     
  5. Michael TLV

    Michael TLV THX Video Instructor/Calibrator

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    What I have told prospective buyers of LCD units is that they should look at the ones on the showroom floor and if those were "clean" to take them instead of a random one out of the box. Since cleans are free of dead/stuck pixels while one is a box is a great unknown.

    I have only had a few Pocket PC/Palm devices develop dead pixels over time. My own many LCD computer monitors have been clean but no one can say in time.

    Calibration is a static slice of time. When I go to calibrate a client's set ... it is usually fairly recent and I can usually see one or two stuck pixels ...

    I rarely/never have the opportunity to go back to see if more have developed over time.

    If this is even an issue ... we would have heard more people on the forums talking about it. The Silence is deafening so I figure it is a non issue.

    As in all cases ... YMMV.

    Regards
     

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