Requires data from Dell Notebook Display E4300, gladly also a source for data from any Dell display.

If you're the original owner and know the screen has never been changed, you can find its part number at support.dell.com (use the service tag to look up the original configuration).  Then search for the manufacturer spec sheet on the panel.

If the system has had its screen changed -- or you bought it used, and therefore may have - you'll want to remove the panel and do the same using the manufacturer part number on the back of the screen.

Ok. the Dell E4300 can use p.e. the follow displays:

https://www.laptopscreen.com/English/model/Dell/LATITUDE~E4300/

For creating a display driver, I need the asked data from one of possible Dell E4300 panels at minimum.

Display panels are produced in generell by follow vendors:

AUO
Chi Mei Optoelectronics
Samsung
Hannstar
Toshiba
LG Display
Sharp
Hydis Hundai

How to get a answer from Dell service about asked question about datasheet for Dell used panels, p.e. a LCD ppanel which used foor Dell E4300 ?

For the LG panel

https://datasheetspdf.com/pdf/908632/LG/LP133WX2-TLA2/1

I don't think either Toshiba or Matsushita are in the LCD business any longer, so it may be more difficult to find information for the first panel -- but you can try searching.