What is the difference between AT043TN24 and AT070TN90 drivers?

bigbat

What is the difference between AT043TN24 and AT070TN90 drivers? [Copy link]

 

This is the Allwinner F1C100S development board I bought, the AT043TN24 I bought from the market, and the 4.3-inch bare screen. It works just by plugging it in. The power supply of this board is very simple, but I saw that the AT070TN90 7-inch bare screen requires LCD drive voltages such as AVDD=10V, VGL= -6V, VGH = 16V, etc. I don't know what the difference is between these two screen drivers. Does the AT043TN24 not need it, or does it have a built-in drive power supply, or can this lichee board output these voltages.

hjl2832

AT070 needs to make its own VLCD power supply, it has several sets of LCD drive voltage

bigbat

hjl2832 posted on 2023-8-27 11:23 AT070 needs to make its own VLCD power supply, it has several sets of LCD drive voltage

AT040 doesn't need that much, right?

hjl2832

The power drive circuit information of this 7-inch screen is available on the development board of Zhengdian Atom.

led2015

Screen size, driver chip, brightness, etc. are all different.

bigbat

led2015 posted on 2023-8-28 21:05 The screen size, driver chip, brightness and so on are all different

This is definitely different. What I want to know is the difference between the two. One is a 40PIN interface and the other is a 50PIN. Does the 50PIN add negative voltage and power supply?