Author Topic: 2.4" TFT LCD Brightness Control  (Read 4296 times)

adnan.ashraf

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2.4" TFT LCD Brightness Control
« on: April 01, 2014, 05:23:24 AM »
Hello,

I am using NHD-2.4-240320SF-CTXI#-FT1 LCD which has built-in ILI9340 controller. I connected the LCD's backlight LED pins directly to a power source and they are working good (internally biased). I want to control the LCD's brightness through the ILI9340 controller's backlight control registers but am unable to change the brightness level using those registers.

I want to know, can the LCD's backlight be controlled through ILI9340 registers or do I need to control the brightness externally through some circuit.

Thanks!

Michael_L

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Re: 2.4" TFT LCD Brightness Control
« Reply #1 on: April 01, 2014, 08:24:47 AM »
The backlight is independent of the TFT controller.  Therefore the latter would be correct; you would need to control the brightness externally.

 

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