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    7寸IPS屏背光亮,LCD黑屏问题

    创龙科技专区
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    • dudu152
      dudu152 LV 3 last edited by

      原来用的是7寸双IC的屏,考虑降成本改用单IC屏,接口LVDS 39P,接口定义,背光一样,但接上屏只亮背光,LCD无显示,调了前后肩,Colk,硬件也改了,还是不亮。请教大神,谢谢! 附件是排线原理图
      39pin.pdf

      Tronlong_support 1 Reply Last reply Reply Quote Share 0
      • Tronlong_support
        Tronlong_support LV 5 @dudu152 last edited by

        @dudu152

        1. 贴出设备树屏幕参数配置
        2. 建议使用示波器抓一下时钟是否正常。
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        • dudu152
          dudu152 LV 3 last edited by

          谢谢!问题找到了,是排线原理跟玻璃特性有关,由高低电关系导致,电路上加个电阻拉低就OK了。

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