Sony TT 8 bit IPS display?

I really would like to think that the Sony TT has got a 8 bit IPS display.
I read this post here
http://forum.notebookreview.com/6430696-post11.html

Other than that post and the Sony website where the TT display is described as 8bit
VAIO TT | 100% NTSC and 8-bit Colour

other sites describe the panel LTD111EV8X as a TN LCD display.

Google Translate

I own this laptop so i would like to know. Still, if it has a TN display it is still an excellent display and the best that i've seen on any laptop.

 

I could believe it is a IPS display but two things that can be said against that:

It is too thin and sony itself claims it to be a "X-Black LCD"
German: http://www.sony.de/res/attachment/file/90/1224085755790.pdf

 

Thanks pyr0, so it's looking like that may be at best it could be an 8 bit TN display. It seems unlikely as well that Toshiba makes 11.1 IPS panels.

 

I am certain it is an 8 bit TN similar to what Dell uses in some of their workstation machines as well as some of the Alienware sub brand.
also the gamut is too low for an IPS panel, my 10 bit IPS in my Elitebook is 150% adobe and sRGB gamut. and I have yet to see any IPS panels with under 120% gamut. 100% NTSC I believe is a lower gamut then sRGB so I would guess that number to be roughly an 80% sRGB ( MacBook Pro 17" is about 72-78% and a 6 bit TN)

 

www.vaio.sony.co.jp/Products/Inside/TT/index_04.html - Translator

That's the Japanese designer interview. The English is a little vague, but from reading the original Japanese, they go into quite a bit of detail in regards to dithering (present in the VGN-Z with the diagonal line syndrome).

They add that the TT does NOT use a partial 16 million colour display like they do with their other models (**cough VGN-Z cough**), but go on to state the TT's display is able to display, fully, all possible 16 million colours in their full (100%) NTSC gamut glory.

For comparison, the TZ is mentioned as having a (or close to) 72% gamut colour display, with the TX being near the 50% range (TX implementing new LED technology back in the days).

Though unfortunately, no mention of IPS or TN displays. But maybe the above will be conclusion enough.

Just note that the TT is known as the T in Japan, which is what the TZ was also known as...

 

crazycanuk and 5ushimonster thank you.

I will say it has got a 8bit TN now unless someone can prove otherwise.

Edited to add:
This is a long shot but if anyone on this forums owns a TT and have access to a display measuring brightness tool it would be great if you could turn off the ambient sensor and set brightness to 100% and measure it.
I'm curious to know what it will be.

 

Actually, that's backwards. NTSC > Adobe RGB > sRGB. sRGB is about 72% of NTSC. Adobe RGB is around 93% of NTSC. When color specs are quoted by percentage, it's not always clear what color space it's relative to. But if not stated, it most often refers to NTSC. For example, when HP specifies 72% color gamut for the Envy, it's implicitly assumed they mean 72% of NTSC which coincidentally equals 100% sRGB.

sRGB is by FAR the most important color space for computer displays. For 99.99% of users, the ideal display is one calibrated to cover the full sRGB color space and nothing more. That's because sRGB is the standard/default color space for almost all of the content out there. So if your display has a wider gamut and isn't calibrated to sRGB, you end up with distorted, over-saturated colors. Some enthusiast photographers will have "prosumer" cameras and printers that support Adobe RGB, so that color space may be useful if they are printing their work. But they're still better off recalibrating it to sRGB for all other uses. And anything wider than Adobe RGB is useless except for a small number of professionals.

Nobody is going to be able to prove anything, but I think you're jumping to conclusions. To date, I don't think any manufacturer has produced a true 8-bit TN panel because it would increase the cost and response time, the two main advantages that TN has over VA and IPS.

You used to be able to determine the panel's bit depth from the number of colors: 16.2m for a 6-bit panel with FRC or dithering vs. 16.7m for an 8-bit panel. But now, it's possible to get 16.7m from a 6-bit panel using fancier FRC/dithering methods.

For example, I read here that Samsung claims 16.7 million colors using 6-bit TN panels with 9-bit signal processing to drive frame rate control and spatial dithering. From additional Googling around, it seems they convert the 8-bit color input to a 9-bit color map, where 6 bits are used to address the panel and the other 3 control the FRC + dithering.

When the Sony designer says "And 260,000 color dithering process liquid crystal display previously displayed a pseudo 16190000 colors, but new type T is proprietary driver newly developed and became visible to 16770000 colors of full." (translated), it's quite likely that the proprietary driver in question is doing something similar if this is a TN panel. The designer also said the response time was improved, which also strongly suggests 6-bit TN.

It's difficult to get hard info because LCD manufacturers treat their approaches to color addressing as trade secrets most of the time. But I think it's still safe to assume that all laptop panels are 6-bit TN with some form of dithering and/or FRC, except for the very rare few that are advertised as IPS. If Sony didn't market it as IPS, I think it's highly unlikely that it is.

It's still an excellent display though. I don't buy into theory that TN automatically means bad.

 

HP has 2 laptops with 10 bit IPS panels currently, the Elitebook 8540W and the 8740W with the dream color 2 screen upgrade. I have the 8740W and well .... WOW

no but there is a huge variance in quality on TN screens, I can look at my TN based laptops and see garbage like my Toshiba with an oddball AUO panel, then a little better into my ASUS G series and Acer Timeline ... up to the 6 bit MBP and Sony Z, then up to the 8 bit TN I have in my M17X and my old Aurora 9750.