PDF datasheet for the SFA035XSJ part, a 340 KB document with an AV suffix whose meaning is not stated in the name. Similar part numbers usually belong to small display modules, and a sheet like this typically covers connector pinout, supply voltages, backlight requirements and signal timing. A technician can use it to check panel power, identify connector pins with a multimeter, or confirm a compatible replacement. Verify the full code on the module sticker, because the SFA035XSE variant uses an almost identical number.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @acodis_lcd_datasheets_EDID. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.