TFT technology breakdown and Model/Panel Index

H@rsh

LCD Panel Technology 'Types and Characteristics'

TN film (Twisted Nematic)

- low manufacturing/retail costs
- restrictive viewing angles
- fast pixel response times
- dead pixels display white. Stuck pixels display RGB colors
- lower contrast levels means blacks are not as dark as VA based panels
- lower color reproduction

IPS (In Plane Switching)

- improved viewing angles over TN
- very good color reproduction
- slower pixel response times than TN
- dead pixels display black
- lower contrast levels means blacks are not as dark as VA based panels

Super-IPS (S-IPS)

- same as IPS except ...
- likely best color reproduction of all TFT
- less expensive to produce than IPS
- improved pixel response

VA (Vertical Alignment) Technologies

MVA (Multidomain Vertical Alignment)

- compromise between TN and IPS technologies
- superior color reproduction over TN but not as good as IPS
- very good viewing angles but less than IPS
- higher contrast than TN or S-IPS means very good blacks
- dead pixels are black
- slower pixel response than TN or IPS
- details can be lost when directly viewing dark areas

Premium-MVA (P-MVA)

- same as MVA except ...
- "overdrive" technology increases pixel response but still slower than TN
- may have slightly degraded color reproduction due to "overdrive" process

PVA (Patterned VA)

- same as MVA except ...
- larger viewing angles
- higher contrast levels means darkest blacks

Super-PVA (S-PVA)

- same as PVA except ...
- “Magic Speed” (the Samsung equivalent to Overdrive) improves pixel response
- slightly improved color reproduction
- slightly improved viewing angles

Purchasing Considerations

TN Gamers
Considered a "gamers" panel due to it's fast pixel response times which reduces trailing images know as "ghosting". However, this advantage has been reduced by new technologies to accelerate pixel response times in other panel types. Colors and contrast tend to be weak and blacks are not truly dark. Viewing angles are significantly limited. However, monitors based on this technology tend to be inexpensive.

IPS / S-IPS Graphics Work or Web Browsing
Considered to have the best color reproduction of all panel types, these panels are well suited for graphics work or web browsing. Pixel response time is also good but slower than the TN "gamers" panel. Contast and blacks are also less dark than VA panels but viewing angles are excellent.

MVA / P-MVA / PVA / S-PVA Compromise/combination for All-Around Use
These panels are a compromise between the fast pixel response times of the TN panel and the excellent color reproduction of the IPS panels. Contrast and blacks are best of all the panel types. Viewing angles are almost similar but slightly inferior to IPS. These details will only matter if you look for them, for average users like myself these are the best IMO.

Model/Panel Index

Acer
Acer AL1951Cs - 19" TN Film
Acer AL1916ws - 19" WS TN Film
Acer AL2016ws - 20" WS Chunghwa Picture Tubes TN Film
Acer AL2032wa - 20" WS AU Optronics P-MVA (M201EW01 V0) OR LG.Philips S-IPS (LM201W01)

BenQ
BenQ FP202W - 20" WS Chunghwa Picture Tubes TN Film

Dell
Dell 1905FP - 19" Samsung PVA (LTM190E4-L02) or AU Optronics P-MVA (M190EN03 V0)
Dell 1907FP - 19" TN Film
Dell 2001FP - 20" LG.Philips S-IPS (LM201U04)
Dell 2005FPW - 20" WS LG.Philips S-IPS (LM201W01)
Dell 2007WFP - 20" WS LG.Philips S-IPS (LM201W01)
Dell 2007FP - 20" LG.Philips S-IPS (LM201U04)
Dell 2405FPW - 24" WS Samsung PVA (LTM240M1-L01)
Dell 2407WFP - 24" WS Samsung S-PVA (LM201W01)
Dell 3007WFP - 30" WS LG.Philips S-IPS (LM300W01)

Gateway
Gateway FPD2185W - 21" WS Samsung S-PVA (LTM210M2)

HP
HP F2105 - 21" WS Samsung S-PVA (LTM210M2)

NEC
NEC LCD20WGX2 - 20" LG.Philips AS-IPS (LM201W01)

Philips
Philips 200P6IS - 16ms- 20" LG.Philips S-IPS (LM201U04)
Philips 200W6S -16ms- 20" LG.Philips S-IPS (LM201W01)
Philips 20PF8846-25ms- 20" LG.Philips S-IPS (LC201V02)
Philips 23PF9956-16ms- 23"WS LG.Philips S-IPS (LC230W01)
Philips 190B6CB- 8ms- 19" TN Film
Philips 190B5CB- 25ms- 19" LG.Philips S-IPS (LM190E01-C4 or LM190E02)
Philips 26PF9956-16ms- 26"WS S-IPS
Philips 32PF7320-18ms- 32"WS LG.Philips S-IPS (LC320W01)
Philips 32PF9830-8ms G2G- 32"WS S-IPS
Philips 37PF7320-8ms G2G- 37"WS LG.Philips S-IPS (LC370W01)
Philips 37PF9830-6ms G2G- 37"WS Sharp ASV
Philips 42PF9830-8ms G2G- 42"WS S-IPS
Philips 42PF9986-8ms G2G- 42"WS LG.Philips S-IPS (LC420W02)

Sceptre X20G Naga II 16ms 20" P-MVA
Sceptre X20G Naga II - 20" WS P-MVA

Samsung
Samsung 930B - 19" Samsung TN Film
Samsung 940B - 19" Samsung TN Film
Samsung 940T - 19" Samsung PVA (LTM190E4)
Samsung 940MW - 19"WS Samsung TN Film (LTM190M2)
Samsung 204B - 20" Samsung TN Film (LTM201UX)
Samsung 215TW - 21" WS Samsung S-PVA (LTM210M2)
Samsung 244T - 24" WS Samsung S-PVA (LTM240M2)

ViewSonic
ViewSonic VA1912W - 19" WS Chi Mei Optoelectronics TN Film (M190A1)
ViewSonic VP912B - 19" AU Optronics TN Film (M190EN04 V1)
Viewsonic VX922 - 19" AU Optronics TN Film (M190EN04)
Viewsonic VX924 - 19" AU Optronics TN Film (M190EN04 V5)
ViewSonic VP920 - 19" TN Film
ViewSonic VP930 - 19" AU Optronics P-MVA (M190EG01 V0)
ViewSonic VA1912W - 19" WS Chi Mei Optoelectronics TN Film (M190A1)
ViewSonic VA2012WB - 20" WS Chunghwa Picture Tubes TN Film
ViewSonic VX2025WM - 20" WS AU Optronics P-MVA (M201EW01 V0)

Much information gathered from TFT Central .

Udit · #1 (**permalink**) By Udit on 11 Jun 06, 07:09 PM

very very excellent & useful article.

repped you.

H@rsh · #2 (**permalink**) By H@rsh on 11 Jun 06, 07:27 PM

Thanks a lot Udit, it was my first here.

Mohit · #3 (**permalink**) By Mohit on 12 Jun 06, 12:22 AM

good article google .. cant rep u though.

DarkNight · #4 (**permalink**) By DarkNight on 12 Jun 06, 12:44 AM

Nice work Google....Any chance getting the specs for Philips in there too?

H@rsh · #5 (**permalink**) By H@rsh on 12 Jun 06, 01:21 AM

hare u go DarkNight
perhaps the mods Could add this to the article

Philips 200P6IS - 16ms- 20" LG.Philips S-IPS (LM201U04)
Philips 200W6S -16ms- 20" LG.Philips S-IPS (LM201W01)
Philips 20PF8846-25ms- 20" LG.Philips S-IPS (LC201V02)
Philips 23PF9956-16ms- 23"WS LG.Philips S-IPS (LC230W01)
Philips 190B6CB- 8ms- 19" TN Film
Philips 190B5CB- 25ms- 19" LG.Philips S-IPS (LM190E01-C4 or LM190E02)
Philips 26PF9956-16ms- 26"WS S-IPS
Philips 32PF7320-18ms- 32"WS LG.Philips S-IPS (LC320W01)
Philips 32PF9830-8ms G2G- 32"WS S-IPS
Philips 37PF7320-8ms G2G- 37"WS LG.Philips S-IPS (LC370W01)
Philips 37PF9830-6ms G2G- 37"WS Sharp ASV
Philips 42PF9830-8ms G2G- 42"WS S-IPS
Philips 42PF9986-8ms G2G- 42"WS LG.Philips S-IPS (LC420W02)

mehargags · #6 (**permalink**) By mehargags on 12 Jun 06, 02:41 AM

great piece of info here - something very hard to find or sh'd say lazy to find info. There is more confusion in buying LCD's than it used to be with CRT's.

I think this one can be Sticky here, & new models can be discussed & catagorized as per the panels..

Wolfff · #7 (**permalink**) By Wolfff on 12 Jun 06, 09:51 AM

Great work google, very useful info. U Deserve reps, but I gotta spread 'em around first.

Just to add to it, TN Panels are 6-bit, where as all others are 8-bit. Though Samsung seems to be bending rules a bit, more info can be found here.

Quad Master · #8 (**permalink**) By Quad Master on 12 Jun 06, 11:41 AM

Nice Article there.

Can some one tell me whats the LCD on a PSP , is its a TFT.
or the LCD used on the Toshiba Quosimo Laptops the one which have a glassy finish not the normal which has a whitish finish which is there on the laptops and there is a lot of pixelation.

The Quosimo laptop which i had seen had amazing screen whats thats LCD called is it a TFT LCD too.

	TechEnclave Work in Progress Guides and Tutorials
TFT technology breakdown and Model/Panel Index Discussion under Guides and Tutorials, part of the Work in Progress category on TechEnclave; LCD Panel Technology 'Types and Characteristics' TN film (Twisted Nematic) - low manufacturing/retail costs - restrictive viewing angles - fast ...