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Common eDP laptop panel pinouts

A project log for All About Laptop Display Reuse

LVDS, eDP, connectors and controllers - let's learn it all

AryaArya 08/13/2022 at 00:000 Comments

This is a page where you can find common laptop/desktop LCD eDP panel pinouts and see if your laptop screen's pinout matches any one of them (it likely does!).

All of these displays use the I-PEX connectors, as mentioned here.

Common pinouts:

A: 30-pin connector (two eDP lanes)

[TODO: insert laptop panel connector photo]

This is the most popular kind of pinout, used by majority of displays - aka all the 1080p and 720p displays out there, save for a rare panel with on-cell touch. It's forwards compatible with 40-pin touch-enabled panels (omitting touch support) using a 40-pin to 30-pin eDP adapter.

B: 40-pin connector (two eDP lanes + touchscreen)

[TODO: insert laptop panel connector photo]

This pinout is used by panels with a built-in (on-cell) touchscreen layer, such as the B156XTK01. It's backwards compatible with 30-pin panels (losing touch support) using a 30-pin to 40-pin eDP adapter.

C: 40-pin connector (four eDP lanes)

[TODO: insert laptop panel connector photo]

This pinout is used for displays over 1080p/1200p resolution, i.e. 2k/4k displays, since they need extra lanes. However, this pinout doesn't have touch support.

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