Datasheet in PDF form for the B173ZAN05.0 laptop panel, the name adding a -1 suffix; the B-prefixed code follows AU Optronics notebook panel numbering, and 173 points to a 17.3-inch class. File size is 1.22 MB. Technicians consult such documents for the eDP connector pinout, panel and backlight supply voltages, and timing data when troubleshooting no-image or backlight faults or confirming a replacement panel fits. The digits after the decimal mark a hardware revision, so compare them with the sticker on the module.
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 @cdispdata. 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.