#LetsDriveLCD [-6] - EL114TR1


I made a video about this, if you want to watch it: https://www.youtube.com/watch?v=t_YXjM7Keqw

Basically I bought yet another screen without datasheet, so I had to reverse engineer it. I have been doing this for many times over on this blog, but I never really documented it. So this time let me try to summarize some of the common ways how this could be done.

Mainly there are 2 tasks: 1. identify the pinout, 2. identify the chip.

Here are some methods that might work:

If you have a system that this screen:

If you know the pinout, but not the IC:

If you know the IC, but not the pinout:

If you don't know anything or previous methods don't apply:

This time I am using the method of measuring the IC dimension. I am not going to repeat the whole RE process in this blog, if you are interested you may watch the video.



  1. NC
  2. GND
  3. GND
  4. VDD
  5. VDD
  6. VPP
  7. VCOM
  8. RST
  9. MBUSY
  10. SBUSY
  11. S2BUSY
  12. S3BUSY
  13. SCS
  14. MCS
  15. S2CS
  16. S3CS
  17. SDA
  18. SCL
  19. DC
  20. BS
  21. VDD
  22. VDD
  23. GND
  24. GND
  25. NC


The code is available at https://github.com/zephray/driving-lcds/tree/main/el114tr1