What is the A and K on a character LCD?
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Xtrabuilds
- Posts: 6
- Joined: Wed Sep 12, 2018 6:19 pm
What is the A and K on a character LCD?
What does the A and K on a character LCD stand for? I know that is how you power the LCDs backlight, but which is positive and which negative?
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LCD_Designs
- Posts: 262
- Joined: Thu Feb 22, 2018 9:49 pm
Re: What is the A and K on a character LCD?
A is the positive side of the LED https://focuslcds.com/journals/el-backl ... ting-edge/ backlight, K is the negative or ground.
If you reverse the wires/polarity the display will not light up.
Note: LED are the most popular. In the older days, EL was around and provided a nice even light, but there were issues with AC and noise and shorter half-life, so all new designs are now LED.
If you reverse the wires/polarity the display will not light up.
Note: LED are the most popular. In the older days, EL was around and provided a nice even light, but there were issues with AC and noise and shorter half-life, so all new designs are now LED.