How generic are LCD logic boards?

[jsog]

How standardized are logic boards and their interfaces to an LCD panel?

The LCD panel connectors are probably standard. Is the firmware on a logic board capable of dealing with a few standard sizes of panel, or are they programmed for just one size?

Can the MCU identify a panel's resolution electronically, or is it hard-coded?

Do TN, PVA, and IPS panels have different interfaces due to their panel technology? Or is that internal to the panel and the MCU just sees a standard digital interface?

Thanks!

[Scenic]

Re: How generic are LCD logic boards?

i've swapped quite a few panels (19-22") around with no problems so far.
if the panel's voltage and resolution match, there shouldn't be any issues.

a 22" widescreen panel (1680x1050) out of a dead Samsung monitor (won't power on.. controller board issues) works perfectly fine with the innards of a 19" widescreen Acer with the same resolution.. it just won't fit in the case.. (i've tried that before after verifying the panel's supply voltage is the same)

i don't know about the panel types though.
i currently have a 19" 1280x1024 Belinea with a MVA/PVA panel and a 19" 1280x1024 LG with a crappy TN panel.. kinda makes me wanna try some panelswapping now

as for the resolution.. i think it's hard-coded into the LCD controller boards firmware, but i don't really know for sure.

[pr0cess0r]

Re: How generic are LCD logic boards?

panel spec must be coded in the logic board there is a store on ebay that sell a logic board whit the inverter and they program it for the lcd panel you have you can even buy the programmer to reprogram it yourself. Most lcd use LVDS standard.

[jsog]

Re: How generic are LCD logic boards?

These are somewhat generic, panel resolution and voltage is set with jumpers: http://www.lcdparts.net/LCDC.aspx