Question What determines analogue or digital: the panel or the controller board?

Feb 26, 2020
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Can an old LCD panel take an HDMI signal as an input if the controller board is set up to handle it? Or is there some sort of digital/analogue conversion problem that would make that impossible?
I have an old LCD panel from a torn down laptop that I'm trying to repurpose as a second monitor. My computer doesn't have D-SUB outputs so I'm looking at buying a controller board that has an HDMI port. If possible, I'd rather have a controller board with HDMI than have to buy all the cables and adapters needed to convert an HDMI output into a D-SUB input.
 
Feb 26, 2020
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Okay, that's what I thought.
If I can ask a follow-up question:
I had a controller board with three different inputs (D-SUB, DVI, HDMI), but I could only get a signal on the panel through the D-SUB input. That means it wasn't an issue of inherent compatibility, but just that the board was faulty or had the wrong firmware or something like that?
 

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