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Naming conventions for LVDS LCD Interfaces

Adam Daluga
Expert 6385 points

Hi,

I was hoping for some help understanding the naming conventions for LVDS LCD panel interfaces.  I’m used to looking at LCD panel datasheets and confirming operability at that level but unfortunately am not that familiar with these namings/standards.  I’ve seen OpenLDI a lot on search engines and I see FPD-Link and Flatlink a lot on TI’s website.

 

Could you help shed some light into how OpenLDI / FPD-Link / Flatlink tie into each other, if at all?

Thanks,

Adam

  • 0
    TI__Guru** 103215 points

    Hello Adam,

    It's a good question and there is a lot of confusion in the industry about these naming conventions because some vendors have deviated from the standard documents or utilized terms the opposite way as others but generally speaking, OpenLDI and FlatLink are referring to the same thing which is an LVDS transmission scheme to condense up to 28 parallel LVCMOS signals into up to 4 lvds lanes, plus clock. There are different naming conventions used to describe the bit mapping to LVDS bit positions like JEIDA, VESA, SPWG, OLDI, etc. However these are sometimes used interchangeably by different vendors, so it is usually best to confirm the bit mappings for the panel against the bit mapping diagrams in each datasheet to confirm that the MSB/LSB bit positions match. 

    FPD-Link is sometimes also used interchangeably with OpenLDI and FlatLink terminology and this is corresponding to FPD-Link I technology, not FPD-Link II or FPD-Link III which are newer technologies and not directly related to the OpenLDI/FlatLink/FPD-Link I signaling scheme. 

    Best Regards,

    Casey