Thinkpads Forum

Did a search, but there is no info on the topic. Does anyone know which panel is the 180 nits Ultralight panel? Here is the list:

TMD 13N7092
Hydis 13N7094
Samsung 13N7096

If someone with an UL LCD could do a parts look-up using their serial number, and report back, it would be much appreciated.

Thanks.

P.S. I KNOW that the x60s 1702 (94U, 7CU, H7U) models have it... What I want to know is the part/number. Thx.

The UltraLight screen panel is: TMD FRU #13N7092.

EOMtp wrote:The UltraLight screen panel is: TMD FRU #13N7092.

Not to sound like a skeptic, but are you certain? The reasons I'm asking is that: 1) others have said that only the 1702's that I mentioned above have the 180 nits panel, but mine (1705) has it (#13N7092) as well; and 2) if mine is the 180 nits panel, then it is nowhere near as bright as what I thought it would be...

Thanks again.

efrant wrote:...but are you certain?

Yes, I am certain of the number. However, are you certain you have that FRU# for your display? Read my answer in the following thread for how to determine which screen you have:
http://forum.thinkpads.com/viewtopic.php?t=41938

EOMtp wrote:

efrant wrote:...but are you certain?

Yes, I am certain of the number. However, are you certain you have that FRU# for your display? Read my answer in the following thread for how to determine which screen you have:
http://forum.thinkpads.com/viewtopic.php?t=41938

I'll do that this weekend to verify, but when I punched my serial number into Lenovo's website for parts, it gave me this list of parts shipped with my system:

Mfg part # FRU part # Description Serviceable?
13N7091 13N7092 12.1 INCH LCD DISPLAY XGA YES
29R7074 NOTAFRU COA LABEL, WINDOWS XP-HOME EDITION:LABEL NO
36P3365 40Y8402 512MBPC25300NP FRU NO
39T0494 39T0495 FRU ADONID MDC-1.5 ADAPTER YES
39T2612 0000000 60GB HARD DRIVE, MORAGA+CS60:HARD DISK D NO
39T5569 39T5578 ADAPTER GWINNETT US&EU FRU YES
39T5670 39T0497 FRU CALLISTO BDC-2 ADAPTER YES
39T7234 39T7265 FRU-KS KBD NMB US ENGLISH YES
40M8928 0000000 GBM APP:BOMS, NOT SHIPPABLE ACROSS BORDE NO
42T1020 0000000 MORAGA+CS60:HARD DISK DRIVES (HDD) NO
42T1400 42T1401 TRYS C60 HGST YES
42W7676 42W7680 SYSTEM PLANAR; FRU PLANAR YONAH DC LV L2 YES
92P1156 92P1155 FRU DELTA 65W 2PRONG MODEL YES
92P1160 92P1159 LITEON 65W 2PRONG MODEL YES
92P1172 92P1171 BATTERY 8 CELL (CYLINDRICAL) SANYO NO

What do you think?

efrant wrote:What do you think?

Two possibilities:
(1) The parts list is incorrect. I don't think this is very likely.
(2) You indeed have the Ultralight LCD, but it does not appear very bright to you. Keep in mind that the Ultralight LCD is bright by comparison to the normal LCD panels on these notebooks, but not by comparison to a good quality desktop LCD panel. Let me state it this way: it's not that the Ultralight LCD panel is particularly bright -- it's just that the others are particularly dim.

EOMtp wrote:

efrant wrote:What do you think?

Two possibilities:
(1) The parts list is incorrect. I don't think this is very likely.
(2) You indeed have the Ultralight LCD, but it does not appear very bright to you. Keep in mind that the Ultralight LCD is bright by comparison to the normal LCD panel on these notebooks, not by comparison to a good quality desktop LCD panel. Let me state it this way: it's not that the Ultralight LCD panel is particularly brightl it's just that the others are particularly dim.

It may very well be #2, as the only thing I'm comparing it to is my T60p Flexview, and there is absolutely no comparison...

EOMtp wrote:

efrant wrote:...but are you certain?

Yes, I am certain of the number. However, are you certain you have that FRU# for your display? Read my answer in the following thread for how to determine which screen you have:
http://forum.thinkpads.com/viewtopic.php?t=41938

Well, I just removed the screw and lo-and-behold, I see a brass metal piece with threads... I guess this means that I do have the UL panel.

So I guess we can say with some confience then, that there are some 1705-CTO's that do indeed have the UL panels, and it's not just the 1702's.

By the way, just out of curiosity, how did you find out that it's the UL panel that has the brass?

Thanks.

I have a 15" external LCD that is 800nits. Yes, I wrote that correctly. 800nits. It's blindingly bright, BUT, you would be surprised how useful that can be (and the colors are not washed out as one might expect). Makes a great TV, and can be used even outdoors with ease (similar panels are used at amusement parks and other outdoor locations). Now I can tell the difference between that LCD and a normal 150nit laptop screen, but not between that 800nit and a 400nit LCD I also have across the room. Therefore, unless they are side-by-side I doubt most of use could tell the difference between quality 150nit and 180nit laptops. While extra brightness is appreciated (as are extra MHz in chips), sometimes small differences are just braggin' rights, and a reason to charge us a LOT more. Just my opinion.

- Yak

I want to buy a 1703AD7 and I'm trying to look up the part. Does this have the ul screen?

brainpicker wrote:Now I can tell the difference between that LCD and a normal 150nit laptop screen, but not between that 800nit and a 400nit LCD I also have across the room. Therefore, unless they are side-by-side I doubt most of use could tell the difference between quality 150nit and 180nit laptops.

The eye's response to brightness is not linear. Therefore, it is indeed very much the case that one cannot tell the difference between 400 and 800, yet one can tell the difference between 150 and 180. The phenomenon is similar to us not being able to tell the difference between touching an 800 degree flame vs. a 400 degree flame, yet we can easily discern the difference between 98.6 degrees and 102 degrees.

The point I would like to pass on to those who have an option between the two screens is that, if one can afford the difference, then the brighter screen is by far more desirable. Whereas with a 150nit screen one almost always wishes for a little more brightness, with a 180nit screen that desire does not enter one's consciousness 90 percent of the time.

brainpicker wrote:Therefore, unless they are side-by-side I doubt most of use could tell the difference between quality 150nit and 180nit laptops. While extra brightness is appreciated (as are extra MHz in chips), sometimes small differences are just braggin' rights, and a reason to charge us a LOT more.

The human visual system (more specifically, the "image-forming" visual system, i.e. the aspect of photoreception that we are conscious of) is mainly concerned with detecting local contrasts, and is less concerned with absolute irradiances. There will be situations where the 150nit screen will give you inadequate contrasts against the surroundings while the 180nit gives you just enough contrasts, e.g. when you use the laptop in a bright room.

And don't forget, the UL LCD's primary advantage is its weight being 0.2 lbs lighter than the regular X60s screen. Many people would be willing to be extra just for this factor.

So how many "nits" is my SXGA+ X6OT?

What's a nit?

proaudioguy wrote:What's a nit?

A "nit" is a measure of brightness equal to the light of 1 candle in a square meter. Some manufacturers use nits, some use
cd/m2 (candelas per square meter). Same thing.

- Yak

brainpicker wrote:I have a 15" external LCD that is 800nits. Yes, I wrote that correctly. 800nits. It's blindingly bright, BUT, you would be surprised how useful that can be (and the colors are not washed out as one might expect). Makes a great TV, and can be used even outdoors with ease (similar panels are used at amusement parks and other outdoor locations). Now I can tell the difference between that LCD and a normal 150nit laptop screen, but not between that 800nit and a 400nit LCD I also have across the room. Therefore, unless they are side-by-side I doubt most of use could tell the difference between quality 150nit and 180nit laptops. While extra brightness is appreciated (as are extra MHz in chips), sometimes small differences are just braggin' rights, and a reason to charge us a LOT more. Just my opinion.

- Yak

This screen is really bright. In comparison to my 3 year old x31 screen, it is night and day almost. Right now it looks even brighter than my very bright Dell 2405FPW monitor (maybe I reduced it's brightness though).

At the end of the day while all the other displays will get dimmer with time as their fluorescent bulbs get dimmer, these LED lit screens will be as bright as they were on day one.