What Panel is this?

So I got this barebones P375SM-A. So far everything worked out great, once i fixed the fan profiles, modded the heatsinks and calibrated the monitor I'm way more satisfied than I'd imagine I'd be. However there is 1 huge question on my mind right now.

What panel is on my P375SM-A? The only thing I can gather is the following:
- The panel is 120hz
- After Calibration this has to be the absolute best panel I've ever layed my eyes uppon.
- I know the modelnumber is LGD02C5 according to HWinfo64.
- Given the very good blacks and the amazing viewing angles, there is no way in hell, that the monitor is a TN panel.

Does anyone know what the actual model of the screen or any software that would be able to find it out? I always used HWinfo64, but this time it doesn't seem to be able to figure it out. I need to know in case one day the screen should get damaged or similair.

If anyone is looking for a screen replacement for a 17inch notebook with eDP, I can recommend this panel, it's absolutely great.

 

It's the LG 50 pin eDP 120hz display, I forget the exact full model number but you can get it from the back of the panel.

 

I did try and find something but all led to a 50pin glossy 120hz display, which can't be right since mine is matte.

 

Usually the two are the same part number exact for one digit as the matte is simply the glossy with an extra coating.

 

LP173WF2 (TP)(A1) is the glossy version, LP173WF2 (TP)(B1) is the non-glare/matte version.

Both are TN panels, viewing angles are 60 degrees x-axis and 50 degrees y-axis. It's 72% NTSC colour gamut so not particularly high - there's a wealth of information on the panel in various threads including the below, search is your friend ;-)

http://forum.notebookreview.com/threads/need-calibration-profile-120hz-3d-lgd02c5.621032/

 

Thats the thing. At first i thought the same thing but it obviously cant be either screen. The panel has 80s viewing angles, the blacks are way better than my ips msi screen. The screen is more vibrant and looks so much better. it cant be a tn panel. The blacks and viewing angles are way beyond the capabilities of a tn panel. I think hwinfo might read something wrong. Thats why i asked for maybe another tool to check the screen.

 

Guess what, TN panel technology has improved. Pets my Samsung UE510 TN panel.

 

unfortunately, there are no IPS laptop screens with 120 Hz, so its definitely a TN. but hey, for you personally it seems to be perfect, so thats basically all that counts in the end

 

B173HAN01.1
http://www.panelook.com/B173HAN01.1_AUO_17.3_LCM_overview_28274.html
Used in several Asus notebooks.

@ Chastity
There are some problems with that statement. Here are a couple:
TN panels can be great, no question about it, there are panels around such as the AUO B156htn01.1 but no matter how great they look, viewing angles simply can't exceed around 70. The technology simply doesn't allow for it. However my screen is clearly around 80s.

The biggest reason where I know it simply cannot be the
LP173WF2 (TP)(A1)
or
LP173WF2 (TP)(B1)
Is simple, I had the latter screen in an Asus G74SX which was known as the 120HZ 3D model. The screen didn't look terrible but not noticable good either, compared to my P157SM LP156WF1-TLF3 or at that time my Alienware M17x60hz LP173WF1-TLB3, only thing that the screen was vastly superior in was the brightness. But this P375SM-A looks completely differently. The 74sx screen looked worse than my MSI GT 72, slightly better than the clevo P157SM and a bit worse than the LP173WF1-TLB3, while the current screen of my P375SM-A crushes everything thrown against it. So far I've compared it against these panels, which should be similair but have no chance of even competing:
MSI GT 72 LP173WF4-SPF1
P157SM LP156WF1-TLF3
M17x R4 LP173WF1-TLB3
Asus G74SX LP173WF2-TPB1
P170SM-A Chi Mei N173HGE-L11

The thing is, the MSI IPS panel looks noticable better than all the other TN panels, it's not a "wow what a huge difference" panel, but it's noticably better than the rest, however the P375SM-A panel which I got is completely crushing every panel including the IPS panel, it is in a completely different league. I went with that notebook at my academy and people noticed the screen as well, they immiediately asked me about my notebook and the screen, without me saying a word. This confuses me to no end, I really wish I had a decent enough camera which wouldnt mess up when taking a photo of a screen so that I could show you the rediculous difference between all those screens and the unknown screen I'm usin, also showing you the way above TN viewing angles. There is absolutely no way this panel is TN, considering the viewing angle and blacks.

 

the panel you linked to is a 60 Hz model... maybe theyre extensively binned and manually overclocked to 120 Hz? unlikely though...

edit: i stand corrected, it is indeed an AHVA 120 Hz panel

 

yeah should hold the mouse on that question mark

 

Observation and facts:
IPS MSI panel:
Contrast: 633:1
Black 0.45 cd/m2
sRGB 87%, AdobeRGB 57%
~300nits
Viewing angle: 80/80/80/80

TN 120hz panel:
Contrast: 691:1
Black 0.67 cd/m2
sRGB ~85-90%, AdobeRGB ~55 - 60%
~400nits
Viewing angle: 60/60/50/50

To showcase that the screen is absolutely not the model in question. Here are the observations:
The brightness of the 120hz screen is well above the MSI 300nits, so around 400 or even 450 might be accurate. I have no retina which runs on that value to compare but I'd say it's around that value.

So I took a couple of high quality anime openings to see the colors better and compared both screens. I put both notebooks side by side and then I ran the openings and there were my findings:
The contrast on the 120hz screen is well above the IPS panel, the whites are much more white as opposed to my IPS screens slight greyish, which isn't really suprising considering that the notebook has a hgher brightness, however now we get the very first conflict with the specs.

The specs on the 120hz screen is 0.67black level, which isn't really black but more of a very dark grey, however, the screen has a slightly better black than the IPS screen. Yes, the black level is more around 0.38 - 0.4 rather than almost 0.7, which is the first conflict. with the specs. Which again completely reks the contrast ratio again, due to the much improved whites and slightly better blacks, the contrast ratio is well above the given 700:1 ratio, I'd almost say we talk more like 900:1 or 1000:1. The difference is very clear, even when I set the brightness down to 300nits, the whites are still superior on the 120hz screen, which again is weird.

The next issue which I'm encountering is viewing angles, as we know when we take a TN panel and look from a 75degree angle on it, the colors get all funny and on really cheap TN panels you can't even see whats on the screen anymore. Now according to specs, the 120hz panel has viewing angles of 60,60,50,50, which means that if you look within an angle of 60 degrees left, right or an angle withing a 50 degree angle, the screen will look just fine and colors and such are represented correcly. So I took a P170SM-A notebook and what do you know, discoloration and what not, however when taking both my IPS MSI screen and my 120hz screen no matter how much i turn the notebook, the colors are the same and I can see whats on the screen no problem. So again, viewing angles of 60,60,50,50 isn't the case, it's more like 85/85/85/85. No matter how I turn the screen I can easily see whats on it.

Now another big thing I noticed is that both screens have similair representation of colors (specwise). The reason why i set those ~ on the 120hz screen is because notebookcheck didn't really put a number to the values, but instead screenshots of the actual color coverage, which were really really similair to the IPS screen of the MSI panel.

I fired up some nice anime openings such as gintama, Tokyo Ghoul, Fullmetal Alchemist brotherhood, No game no life and My Hero no Academia, and what I noticed was that the color coverage is again, different. So in all openings, the IPS screen could not show colors that the 120hz screen wouldn't show. Now obviously, a great question will arise, if 2 screens show different colors, then how do I know which one is the one not showing the right color? Great question, let me answer. There was a shot of a female character of Gintama, she had brown eyes and brown hair, on the IPS screen the eye color and the hair color was the same, however on the 120hz screen the color were different. The eye color itself, were on both screens the same color, however on the 120hz screen the hair color was a more bright brown, which the IPS screen couldn't really show, hence the 120hz screen covered a color the IPS couldn't. This observation has been made throughout the entire testing. The 120hz screen was able to represent more colors in the dark red / brown color spectrum, more colors in light blue and by far the most noticable color was green. Green scenes looked completely different on the 120hz screen, there were so many more green tones which I've never seen before. I haven't realized that the green value on the IPS screen was that much inferior.

Given all my observations I can conclude, that it's completely impossible that I have a LP173WF2-TPB1 monitor.

 

There are TN 120Hz FHD panels with very good horizontal viewing angles such as this N173HHE-G32 ChiMei, 80 degrees horizontal. But the code in your OP is an LG model - if AIDA doesn't give any more information then you need to check the model number on the back of the panel.

 

There are quite a few laptops with IPS - 120Hz : noteb search for IPS + 120Hz .
Response time is still not as good as TN, so for gaming TN remains the best IMO.

Indeed. I am using one of these high quality TN. They get pretty close to IPS level, the only issue is the luminosity distribution and some colour drift when not looking straight forward. For photo editing, IPS would still be better, but otherwise the TN is great.

 

People do get a bit obsessive over tech but the best TN panels can be really nice. The vertical viewing angles are usually a give away regardless though.

TN usually has less light bleed too which helps in use contrast ratio.

 

ya think? thats the whole point of NBR!

 

Yup, for a TN panel they are pretty darn good.

Thing is, for a P375SM-A chassis there weren't any 120Hz IPS panels around at that time and definitely not in Clevo chassis - it's possible that one was retrofitted at a later date but without any more information regarding the source of the chassis the only way (if software won't reveal the exact model, though LGD02C5 is the TN version it could be reading it wrong) is to have a peek under the hood!!!

 

In this case though the empirical results are far more important.

 

of course, they always are. but you know us tech bunch, very gutsy-feely, drama queen and pitch forks always ready by our side

 

@XMG gave you absolute correct information about that screen.
I have the glossy version of the same LP173WF2 (TP)(B1) in my good old P170HM3.
Clevo used them there for the first time and then for P570WM3, P370SM3 and the 120Hz P73xSM-A refresh.
Newer systems are designed for the newer slimmer screens and can no longer fit this model.

Just pop the LID open and verify the model ID.

 

@Danishblunt

My Samsung UE510 has several backlight options, one of which is called "Group Viewing" which eliminates the Color skewing from typical TN viewing angles, and I get a more 170 degree viewing capacity. (Yes, I can move my head in either direction, and the colors remain proper) Too bad Laptop TN panels don't have this option.

 

They would have probably struggled to get the heat under control and fit to the current form factor back then.