General Plasma & LCD discussions

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PostmanPot said:
Where on earth did you get all that from? :confused:

Excuse the bewilderment but that's simply not true.
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Which part isn't true?

In-plane switching (IPS)

In-plane switching was developed by Hitachi Ltd. in 1996 to improve on the poor viewing angle and the poor color reproduction of TN panels at that time.[6]

Its name comes from the main difference from TN panels, that the crystal molecules move parallel to the panel plane instead of perpendicular to it. This change reduces the amount of light scattering in the matrix, which gives IPS its characteristic wide viewing angles and good color reproduction.[7]

Initial iterations of IPS technology were plagued with slow response time and a low contrast ratio but later evolutions have made marked improvements to these shortcomings.

Because of its wide viewing angle and accurate color reproduction (with almost no off-angle color shift), IPS is widely employed in high-end monitors aimed at professional graphic artists, although with the recent fall in price it has been seen in the mainstream market as well.
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http://en.wikipedia.org/wiki/TFT_LCD#In-plane_switching_.28IPS.29

I didn't have to go the Wiki to find out, but you wanted proof, so wiki's your friend.
 
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Ono'rach said:
What do you mean, aren't most LCD tv's IPS?
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Not a chance. IPS LCD is primarily used in computer monitors, not TV's.

I see there are only a handful of IPS LCD TV's, you can be assured they are rather expensive.

Consider that a 23" Dell/HP 16:9 IPS goes for ±R3,000.

*edit*

I was even surprised to see that there are actually IPS LCD TV's. :p :D
 
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Okay, then explain to me how it is that every LCD TV i've seen so far all have the same wide viewing angles, and same bright colors when compared to computer monitors. My T240 pales in comparison to my cheapo 32 inch LCD TV where picture quality is concerned. I'm a serious videophile so I tend to notice such things.

Also, explain to me how it is that LG can release a 23 inch LED backlit IPS monitor for a RRP of R2000.

There always was a higher demand for IPS in TV's then in computer monitors, and with the demand the supply skyrocketed, and price consequently dropped. That only applied to TV's since different factories were used for their TV's and monitors.

I reckon it was when manufacturers decided to use 1080p in their monitors, that they were able to use the same factories for both TV's and monitors, which is why we see LG releasing a LED backlit IPS monitor. It really isn't such a big jump for them since they're essentially still making TV's, just in smaller sizes, and for a different purpose.
 
Better viewing angles could be attributed to bigger pixels. That's what logic is telling me. But just because the viewing angles are better does not mean they are IPS screens (straw-man argument). Ever seen the viewing angles of a Mac TN LCD? Insanely good, since they have worked on TN LCD technology.

Both Dell and HP 23" IPS are LG panels. So it seems LG have always had the capability. Of course there are many more components besides the panel that adds to quality. Dell or HP 23" IPS with LG panels will eat LG 23" IPS alive. They have always been more exclusive, hence their price. As the panel maker, LG can bring LG IPS screens to the consumer at a cheaper price.

I can assure you that 99% of LCD TV's are TN LCD.
 
PostmanPot said:
Better viewing angles could be attributed to bigger pixels. That's what logic is telling me. But just because the viewing angles are better does not mean they are IPS screens (straw-man argument). Ever seen the viewing angles of a Mac TN LCD? Insanely good, since they have worked on TN LCD technology.

Both Dell and HP 23" IPS are LG panels. So it seems LG have always had the capability. Of course there are many more components besides the panel that adds to quality. Dell or HP 23" IPS with LG panels will eat LG 23" IPS alive. They have always been more exclusive, hence their price. As the panel maker, LG can bring LG IPS screens to the consumer at a cheaper price.

I can assure you that 99% of LCD TV's are TN LCD.
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And how do you know that for sure? Do you work in the LCD manufacturing industry? Or where on the internet did you read that?
 
MiY4Gi said:
And how do you know that for sure? Do you work in the LCD manufacturing industry? Or where on the internet did you read that?
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I don't need to work in the LCD manufacturing industry to know that IPS LCD TV's are only economically viable at the higher end of the market, as they cost an arm and a leg.

Do you work in the LCD manufacturing industry; can you prove that entry-mid level LCD TV's use IPS screens?

Perhaps my estimate percentage was a bit off. Would you be happier if I said 95% are TN LCD? Perhaps that is more realistic...
 
PostmanPot said:
I don't need to work in the LCD manufacturing industry to know that IPS LCD TV's are only economically viable at the higher end of the market, as they cost an arm and a leg.

Do you work in the LCD manufacturing industry; can you prove that entry-mid level LCD TV's use IPS screens?

Perhaps my estimate percentage was a bit off. Would you be happier if I said 95% are TN LCD? Perhaps that is more realistic...
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And what new technology has been introduced that allows TN panels to have viewing angles of close to 180 degrees. Or how to you explain the lack of color shift in a TN panel? And for a newer TN panel a 6ms response time is strange.
 
PostmanPot said:
I don't need to work in the LCD manufacturing industry to know that IPS LCD TV's are only economically viable at the higher end of the market, as they cost an arm and a leg.

Do you work in the LCD manufacturing industry; can you prove that entry-mid level LCD TV's use IPS screens?

Perhaps my estimate percentage was a bit off. Would you be happier if I said 95% are TN LCD? Perhaps that is more realistic...
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IPS monitors are only viable in the high-end of the monitor market, but for TV's IPS and VA dominate. I'm busy looking for proof at the moment. I've only read so far that TN dominates in smaller size panels, which is true. I'm only concerned with panels 32 inches and larger. I see Samsung's latest TV's have a response time of 4ms, which is strange considering that the latest TN panel monitors have response times of 2ms. Manufacturers always strive to improve their TV's specs, not worsen them.
 
Its just weird, because I bought a 37inch LG LCD in 2008, and it had an S-IPS panel (it said so on the box, in the manual and on the internet).

I returned it because it was faulty and got a different panel, and now I cannot for the life of me remember the model number.

I'm trying to find it...
 
Ono'rach said:
Its just weird, because I bought a 37inch LG LCD in 2008, and it had an S-IPS panel (it said so on the box, in the manual and on the internet).

I returned it because it was faulty and got a different panel, and now I cannot for the life of me remember the model number.

I'm trying to find it...
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Found it. I got it 2009, not 2008 (my terrible memory :p ) and it is most definitely a S-IPS panel (super in plane switching)

Plus, it was a budget model in the LG lineup

http://reviews.productwiki.com/lg-lh30-series/
 
MiY4Gi said:
And what new technology has been introduced that allows TN panels to have viewing angles of close to 180 degrees. Or how to you explain the lack of color shift in a TN panel? And for a newer TN panel a 6ms response time is strange.
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Dithering. http://en.wikipedia.org/wiki/Dither

A Mac's TN LCD is far superior compared to a Samsung/LG TN LCD. Colours and viewing angles.
 
Dithering can only increase the range of colors that can be displayed, it cannot prevent color shift that occurs by viewing a TN panel off center. I'll read a little up on the Mac's TN panel to see what it's all about.
 
Not sure, all I know is that Mac's non-IPS LCD's have improved colours and viewing angles (at least in my experience).

I've started to see more LCD TV's with IPS/VA panels now than I expected, namely LG. Samsung don't seem to list much info on panel types. I'll admit I've learnt that they are more common that I thought.
 
PostmanPot said:
Not sure, all I know is that Mac's non-IPS LCD's have improved colours and viewing angles (at least in my experience).

I've started to see more LCD TV's with IPS/VA panels now than I expected, namely LG. Samsung don't seem to list much info on panel types. I'll admit I've learnt that they are more common that I thought.
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:)
 
Anyone have a 3D Tv here and connecting to a PS3.
I have downloaded some 3D content and though it tells me 3D is enabled - i cant see it.
One issue could be the HDMI cable - as it was bought in 2007 - and v1.3 only came out in 2006, i am wondering if my cable is an older version.
 
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