First two prototypes I made the mistake of making them double sided, not realizing just how fucking annoying it is to solder 0.4mm pitch connectors on the back of already populated PCB. First one I used TI's TPS series of WLED drivers, which didn't work as good as I expected, so I scrapped that one. Second one I switched to ROHM driver, which worked better, but I hooked it up wrong, which didn't allow me to bring drive voltage above 5.5V making the panel pretty useless brightness-wise. Finally the third one, I redid the layout so that it was all on one side, making much easier to assemble and to reduce potential fuckups from having to bake the board twice.
The end result is pretty nice, though I'm fairly happy with my 4K Dells at this point.
As usual, high resolution photos are in the Google Picasa album:
Thumbnails below (maybe click to embiggen works)
|Windows 8.1 monitor control panel with Chromebook LCD below dual 4K Dells|
|The board itself. Surely didn't cost me anywhere near $130 even if I was going to assemble only one.|
|Another look at the board.|
|rev2 prototype with ROHM driver. Failed.|
|rev1 prototype with TPS driver. Failed for some reason I can't remember.|
|Yes, 2560x1700 in ~12 inch. Very nice.|