Author Topic: Display artifacts?  (Read 2054 times)

ahumblet

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Display artifacts?
« on: August 07, 2015, 08:18:29 AM »
Hi all,

We are evaluating a NHD-7.0-800480EF-ATXL#-CTP and get some display artifacts as shown on the attached screenshot.

If we display a filled color screen, we get what we expect. But when we draw something more complex, some pixels are not of the expected color and some are flickering. This is shown on the attached screenshot where some black lines appear green.

I suspect this comes from some violation of the timings on the pixel bus but I would like to know if you have other ideas and some ways to correct this behaviour?

Thank you,

Alexis

Michael_L

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Re: Display artifacts?
« Reply #1 on: August 07, 2015, 11:26:32 AM »
From what I have seen, this happens when the pixel clock, or dot clock, is not of the correct polarity.  Can you try changing the polarity of the pixel clock in your software and try the display again?

ahumblet

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Re: Display artifacts?
« Reply #2 on: August 14, 2015, 07:23:48 AM »
Thank you Michael, that was the problem.

 

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