SKorea's Samsung Elec develops 70 inch full HD LCD TV panel

**Cass** · 08-21-2006, 08:35 AM

SKorea's Samsung Elec develops 70 inch full HD LCD TV panel

firsTraveler · 08-21-2006, 11:12 AM

"The company said the new panel's video signal is reproduced at 120 Hz, compared with 60 Hz in conventional models, enabling rapidly moving video images to be reproduced clearly. "

Interesting refresh rate. What pulldown rate would it use, 3:2 or maybe 3:1?

Razor05 · 08-21-2006, 12:52 PM

Saw this pic:

BobY · 08-21-2006, 03:16 PM

It is a good thing, but not for the reasons they said.

Refreshing the panel at 120Hz isn't going to improve rapid motion over a 60Hz refresh when displaying any current video content, as the video signal itself is only updating motion at 60Hz.

The real benefit of 120Hz refesh is that it is both an even multiple of 60Hz (times two--for smoothly displaying video content, which is updated at 60 fields-per-second/30 Frames-per-second) *and* an even multiple of 24Hz (times five--for smoothly displaying movie content which is updated at 24 Frames-per-second).

120Hz refresh with 5:5 pull-down eliminates the juddering that occurs when displaying 24Fps on a 60Hz refresh display without the need to change refresh rates.

dontknowjack · 08-22-2006, 03:15 AM

70 inches heh? So how much is that for inch?

paulc · 08-22-2006, 02:33 PM

Does the babe come with it to help you adjust it?

Seriously though, 1920 x 1080 means some very fat pixels...

firsTraveler · 08-23-2006, 12:08 PM

Quote:

Originally Posted by paulc

Seriously though, 1920 x 1080 means some very fat pixels...

if you use the standard seating distance of 2.5 times the diagonal, that's 14.5 feet away! Doubt fat pixels is much of a factor.

paulc · 08-24-2006, 03:59 PM

They'd still be fat... the point I was trying to make was too subtle... we need MORE PIXELS on the screen. Nobody, but nobody here ever mentions pixel density... and that plays as a factor in display quality as well. Take you "standard" 17" computer monitor and run it at 640 x 480... fat pixels!

BobY · 08-27-2006, 03:05 PM

The current maximum resolution of HD signals (which will be true for quite some time) is 1920 x 1080 pixels, so there isn't much reason to have a display with more pixels than that. OK, you could interpolate the image up to a higher resolution, but it won't look as good as a real higher resolution image and will come at a premium price for the display--unlikely that any manufacturer is going to go that route.

At any resonable viewing distance, nobody will notice the pixels, regardless of how "fat" they are up close (the pixels are square regardless, so they really aren't any fatter, they're just bigger), but at some point, larger screen sizes won't make much sense as you won't be able to sit far enough from them to not detect the pixels.

08-21-2006, 08:35 AM	#1
Cass Administrator Join Date: Mar 2004 Location: Colorado Springs & Denver Posts: 1,129	SKorea's Samsung Elec develops 70 inch full HD LCD TV panel SKorea's Samsung Elec develops 70 inch full HD LCD TV panel

08-21-2006, 11:12 AM	#2
firsTraveler High Definition is the definition of life. Join Date: Jan 2006 Posts: 427	"The company said the new panel's video signal is reproduced at 120 Hz, compared with 60 Hz in conventional models, enabling rapidly moving video images to be reproduced clearly. " Interesting refresh rate. What pulldown rate would it use, 3:2 or maybe 3:1?

08-21-2006, 03:16 PM	#4
BobY What's all this, then?... Join Date: Jan 2006 Posts: 6,197	It is a good thing, but not for the reasons they said. Refreshing the panel at 120Hz isn't going to improve rapid motion over a 60Hz refresh when displaying any current video content, as the video signal itself is only updating motion at 60Hz. The real benefit of 120Hz refesh is that it is both an even multiple of 60Hz (times two--for smoothly displaying video content, which is updated at 60 fields-per-second/30 Frames-per-second) and an even multiple of 24Hz (times five--for smoothly displaying movie content which is updated at 24 Frames-per-second). 120Hz refresh with 5:5 pull-down eliminates the juddering that occurs when displaying 24Fps on a 60Hz refresh display without the need to change refresh rates.

08-22-2006, 03:15 AM	#5
dontknowjack High Definition is the definition of life. Join Date: Apr 2005 Posts: 949	70 inches heh? So how much is that for inch?

08-22-2006, 02:33 PM	#6
paulc Very Grizzled Vet of 1 yr Join Date: May 2006 Location: New York City Posts: 1,764	Does the babe come with it to help you adjust it? Seriously though, 1920 x 1080 means some very fat pixels...

08-24-2006, 03:59 PM	#8
paulc Very Grizzled Vet of 1 yr Join Date: May 2006 Location: New York City Posts: 1,764	They'd still be fat... the point I was trying to make was too subtle... we need MORE PIXELS on the screen. Nobody, but nobody here ever mentions pixel density... and that plays as a factor in display quality as well. Take you "standard" 17" computer monitor and run it at 640 x 480... fat pixels!

08-27-2006, 03:05 PM	#9
BobY What's all this, then?... Join Date: Jan 2006 Posts: 6,197	The current maximum resolution of HD signals (which will be true for quite some time) is 1920 x 1080 pixels, so there isn't much reason to have a display with more pixels than that. OK, you could interpolate the image up to a higher resolution, but it won't look as good as a real higher resolution image and will come at a premium price for the display--unlikely that any manufacturer is going to go that route. At any resonable viewing distance, nobody will notice the pixels, regardless of how "fat" they are up close (the pixels are square regardless, so they really aren't any fatter, they're just bigger), but at some point, larger screen sizes won't make much sense as you won't be able to sit far enough from them to not detect the pixels.