ThinkPad P50 Screen Upgrade (30 pins eDP → 40 pins)

Discussion in 'Hardware Components and Aftermarket Upgrades' started by RazenXD, Jul 31, 2021.

  1. RazenXD

    RazenXD Notebook Enthusiast

    Reputations:
    0
    Messages:
    11
    Likes Received:
    2
    Trophy Points:
    6
    Hello,

    I own a Lenovo ThinkPad P50 and I would like to upgrade the stock panel, which is an InnoLux N156HCE-EEA.

    This panel is a 1080p / 60Hz / 300 nits / IPS / 800:1 / 71% NTSC that uses a 30 pins eDP connector.

    My goal is to have a display with higher refresh rate, higher brightness, higher contrast ratio, lower response time, and better colour fidelity.

    Also, I am not willing to downgrade to a TN panel, I want to stick with IPS.

    So I have looked at displays on panelook.com, and I found many displays meeting these criterias :
    Any of these would be perfect, but there are 2 problems :
    1. These panels use a 40 pins eDP interface, but my current cable outputs to 30 pins.
    2. These panels don't use the same fixation locking system as the ThinkPad P50's : the stock panel is screwed in place with 4 screws in the corners, those 2 panels don't have the mounting holes.
    To address the first problem, I have already ordered a 40 pins ⟷ 40 pins eDP cable on AliExpress (here is the link : https://www.aliexpress.com/item/33003121092.html?spm=a2g0s.9042311.0.0.61476c37FkObYq)

    But about the fixation locking system, I am clueless how to install a panel like this in my machine.

    Has anyone ever dealed with something like this ? If yes, how did you attach the panel to the frame ?

    Thanks in advance !
     
  2. Tech Junky

    Tech Junky Notebook Deity

    Reputations:
    251
    Messages:
    1,090
    Likes Received:
    395
    Trophy Points:
    101
    For mounting get some double sided rape / foam.

    Mine doesn't use mounting tabs / screws but 1-3mm DS tape to hole the panel to the lid but, the bezel makes sure it's secure as well.
     
  3. RazenXD

    RazenXD Notebook Enthusiast

    Reputations:
    0
    Messages:
    11
    Likes Received:
    2
    Trophy Points:
    6
    Oh, so I guess most of the new laptop panels are just taped instead of screwed ?

    Also i'm sorry, what do you mean by foam ?

    Thanks !
     
  4. tilleroftheearth

    tilleroftheearth Wisdom listens quietly...

    Reputations:
    5,362
    Messages:
    12,656
    Likes Received:
    2,688
    Trophy Points:
    631
    Foam with tape on each side to keep things from moving around/clanking. :)
     
    RazenXD likes this.
  5. TheQuentincc

    TheQuentincc Notebook Evangelist

    Reputations:
    83
    Messages:
    655
    Likes Received:
    196
    Trophy Points:
    56
    Did Lenovo really made these laptop with a 30pins edp display ? what a shame, 40pins edp display weren't that more expensive. My main concern would be to know if all 4 edp lane are present and working, it might not be the case..
     
  6. RazenXD

    RazenXD Notebook Enthusiast

    Reputations:
    0
    Messages:
    11
    Likes Received:
    2
    Trophy Points:
    6
    The 1080p version comes with a 30 pins eDP whereas the 4K has 40 pins afaik
     
  7. TheQuentincc

    TheQuentincc Notebook Evangelist

    Reputations:
    83
    Messages:
    655
    Likes Received:
    196
    Trophy Points:
    56
    Yes but did the motherboard still the same on 1080p and 4k variant ?
     
  8. Tech Junky

    Tech Junky Notebook Deity

    Reputations:
    251
    Messages:
    1,090
    Likes Received:
    395
    Trophy Points:
    101
    In my case it was a cable / panel swap to 4K from FHD.

    MOBO doesn't need any changes to make it work.
     
    tilleroftheearth likes this.
  9. RazenXD

    RazenXD Notebook Enthusiast

    Reputations:
    0
    Messages:
    11
    Likes Received:
    2
    Trophy Points:
    6
    Do 4K panels require 4 lanes?
     
  10. Tech Junky

    Tech Junky Notebook Deity

    Reputations:
    251
    Messages:
    1,090
    Likes Received:
    395
    Trophy Points:
    101
    Not necessarily. It depends more on the GPU and how many lanes are provided there. More lanes means you can extend it to more panels / displays.

    https://en.wikipedia.org/wiki/DisplayPort

    It gets kind of nerdy but, more lanes = more bandwidth / more bandwidth = more resolution / more displays / higher refresh rate

    However more isn't always better. 1080/300hz is a bit too smooth. Finding 4K/120hz can be a hassle. There's a happy medium with each level of Res vs RR.
     
Loading...

Share This Page