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T6963C LCD often flickers [Copy link]

I use STM32F103 to drive T6963C, and now it can display.

But there is a problem, the LCD screen often flickers, I don't know what's going on.

Here is the schematic.

Dear experts, have you encountered similar problems? Thank you!

This post is from stm32/stm8

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At present, most LCD screens use LED as the backlight source. LED is powered by DC. If the backlight power is not enough, it will flicker. The LCD screen of T6963C should be about 4 inches with a resolution of 240*128. The backlight is generally 5V and 100mA. You can use it as a reference.   Details Published on 2020-12-16 17:05
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Is it the backlight flickering or the pixel flickering? First check the backlight and contrast circuits. If there is no problem, it means there is a problem with the software programming.

This post is from stm32/stm8

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Backlight flashes.  Details Published on 2020-6-19 13:39
 
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chunyang posted on 2020-6-19 12:10 Is it the backlight flickering or the pixel flickering? First check the backlight and contrast circuits. If there is no problem, it means there is a problem with the software writing.

Backlight flashes.

This post is from stm32/stm8

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Backlight flickering is mostly a hardware problem, unless the backlight control is performed by software. If the backlight is controlled by software, temporarily disconnect the software control line and connect the backlight directly to the power supply. If it still flickers at this time, it means that the backlight circuit has poor contact.  Details Published on 2020-6-19 17:56
 
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Hi, has your problem been solved?

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No  Details Published on 2020-6-19 16:15
 
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okhxyyo posted on 2020-6-19 15:24 Hi, has the original poster's problem been solved?

No

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Backlight flickering is mostly a hardware problem, unless the backlight control is performed by software. If the backlight is controlled by software, temporarily disconnect the software control line and connect the backlight directly to the power supply. If it still flickers at this time, it means that the backlight circuit has poor contact.

This post is from stm32/stm8

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Thanks! That may be a hardware problem. The backlight is controlled by hardware.  Details Published on 2020-6-19 18:42
 
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chunyang posted on 2020-6-19 17:56 Backlight flickering is mostly a hardware problem, unless the backlight control is performed by software. If the backlight is controlled by software, temporarily disconnect the software control line and connect the backlight directly to the power...

Thanks! That may be a hardware problem. The backlight is controlled by hardware.

This post is from stm32/stm8
 
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At present, most LCD screens use LED as the backlight source. LED is powered by DC. If the backlight power is not enough, it will flicker. The LCD screen of T6963C should be about 4 inches with a resolution of 240*128. The backlight is generally 5V and 100mA. You can use it as a reference.

This post is from stm32/stm8
 
 
 

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