Papilio user Alex has managed to drive an LCD screen with his Papilio Plus Board. He used an old broken laptop that was left unused for a long time and took the LCD apart which is a 15″ panel with 1280×800 pixel native resolution to try to drive it with the Papilio Plus FPGA board and fortunately he found a datasheet online with everything needed to start the project.
The LCD panel is driven with four LVDS differential pairs and the Papilio Plus has a LVDS output and that was perfect to drive it:
“Additionally the panel is driven with four LVDS differential pairs, three for data and one for clock. Currently I have all the signals soldered to a small perfboard with a header that plugs into wing slots BH and AL. The reason I chose these slots is because I need differential signal pins and no single wing alone provides these.”
Alex plans to make a board with a switch mode regulator that would have a barrel connector for power, a small pot for adjusting the brightness and a HDMI connector. He also said that the LCD panel is not HDMI capable but the HDMI connector is ideally suited for passing the high frequency data signals required to drive the LCD.
You can take a look at the PCB design that Alex submitted to Batchpcb after the break.
Don’t forget to drop by the forum topic to read the whole thing and share your thoughts with our community.
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