Thinkpad T420 IPS/PLS Screen Upgrade

Tired of the awful OEM screen on your T420? Want FHD (1920×1080) resolution with the full colors and deep blacks of IPS screens? Having a hard time deciding which to order? Then this page might help you.

There are several screens available for the non-S T420 laptop which have performance characteristics on par with true IPS screens. This page has a good explanation of how the various panel types differ.

This thread by RMSMajestic seems to be the origin of the screen upgrade for the non-S Thinkpad T420 and T430. The first post explains why flickering is a common problem.

There are several eBay sellers carrying FHD IPS controllers. The one sold by moe-tech, for example, supports the following screens:

1920×1080 (FHD) Screens

Brand Model Type Finish Colors Brightness Contrast Viewing Angle
AUO B140HAN01.0 AHVA Glossy 16.2m 300 cd/m^2 800:1 89/89/89/89
B140HAN01.1 AHVA Matte, hard 16.2m 300 cd/m^2 700:1 89/89/89/89
B140HAN01.2 AHVA Matte, hard 16.2m 300 cd/m^2 700:1 89/89/89/89
B140HAN01.3 AHVA Matte, hard 16.2m 300 cd/m^2 700:1 89/89/89/89
LG LP140WF1-SPB1 AH-IPS Matte 262k 300 cd/m^2 700:1 85/85/85/85
LP140WF1-SPV1
LP140WF1-SPK1 AH-IPS Matte, hard 262k 300 cd/m^2 700:1 80/80/80/80
Samsung LTN140HL02-B01 PLS Matte, hard 262k ??? ??? 85/85/85/85
BOE NV140FHM-N62 ADS Matte 16.7m 300 cd/m^2 800:1 85/85/85/85
NV140fhm-n41 ADS Matte, hard 262k 250 cd/m^2 800:1 85/85/85/85
Innolux N140HCA-EAC AAS Matte 262k 250 cd/m^2 800:1 89/89/89/89

There are also 40-pin controllers that support 2560×1440, such as this one by e-qstore. It lists the following screens:

2560×1400 (WQHD) Screens

Brand Model Type Finish Colors Brightness Contrast Viewing Angle
AUO B140QAN01.1 AHVA Matte, hard 16.7m 340 cd/m^2 700:1 85/85/85/85
B140QAN01.5 AHVA Matte 16.7m 300cd/m^2 700:1 85/85/85/85
LG LP140QH1-SPB1 IPS Matte 16.7m 300cd/m^2 700:1 85/85/85/85
LP140QH1-SPB3
LP140QH1-SPA2 IPS Glossy 16.7m 300cd/m^2 700:1 85/85/85/85
LP140QH2-SPB1 IPS Matte 16.7m ??? 800:1 85/85/85/85

I chose the AUO B140HAN01.3 from eBay seller neidersch, and the LCD controller from moe-tech. Why that particular screen? Because I wanted a matte finish, and it appears to be identical to the B140HAN01.1, aside from being 0.2mm shallower. Both have been working great for around nine months.

About Jeff Fitzsimons

Jeff Fitzsimons is a software engineer in the California Bay Area. Technical specialties include C++, Win32, and multithreading. Personal interests include rock climbing, cycling, motorcycles, and photography.
This entry was posted in Hardware, Technology. Bookmark the permalink.

Leave a Reply

Your email address will not be published. Required fields are marked *