AfterDawn: Tech news

LG shows off 480 Hz TV

Written by Andre Yoskowitz (Google+) @ 30 Dec 2008 21:18 User comments (24)

LG shows off 480 Hz TV LG has announced the development of the world's first 480 Hz LCD TV panel. The TV is capable of a refresh rate of 480 images per second. In comparison, most commercially available LCD TVs currently have refresh rates of 120 Hz or 60 Hz.
The electronics company explained "that the technology is enabled by combining existing 240 Hz panels with “scanning backlight”, which repeatedly turns the backlight on and off to reduce motion blur. According to the company, the panel also posts a low motion picture response time of 4 ms, which should eliminate motion blur to provide a realistic out-of-the-window view."

There are also "a few other new features in this panel, such as technologies to create more contrast and a greater brightness level, as well as the ability to adjust the backlight brightness to reduce the power consumption of the LCD panel."

A prototype will be shown off at CES and the first consumer TVs will hit North American stores in the Q3 2009.

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24 user comments

131.12.2008 0:37

OMG.... if your going to display the first fastest refreshing lcd tv in the world, you could make your first impression my turning down the blue and Synchronizing the colors.

This message has been edited since its posting. Latest edit was made on 31 Dec 2008 @ 0:39

231.12.2008 1:45

Yeah, I noticed that right away.

331.12.2008 4:24
varnull
Inactive

As any photographer knows.. it's about white balance. The camera is normalized to the girl and background.. so the screen looks blue because of the difference in colour temperature between what look like tungsten lighting for the scene and the inherent blueness of lcd dsiplays.

At least it's an honest picture not some digitized messed about with thing that all you guys are so obviously used to seeing that when you see reality you can't accept it as such and start whining about "should have done this.. should have done that". You lot and your ignorance of technical matters related to film, video and cameras is mind boggling sometimes.

431.12.2008 6:44

how can you honestly believe the tv looks that blue in real life? they are demonstrating a new display, why the hell would they miss something so simple as to not make it look like crap. I wouldnt worry too much about correcting their mistakes, they are smarter than you

531.12.2008 8:13

She's cute.

631.12.2008 9:02

The tv sounds expensive :(

731.12.2008 9:25

Originally posted by bryston:
The tv sounds expensive :(
Probably will be high. 480Hz Plasmas are cheaper than 120Hz LCD's in most cases. Plasma's will only get cheaper. LCD technology is getting better and coming close, but the cost will probably initially be pretty high compared to existing technology. Good news for those who would be satisfied with 120Hz LCD, as the prices should drop for those models.

831.12.2008 10:19

Having recently nearly purchased a LG 42" 7000 and decided not to.

The 7000 is currently their top spec LCD model, however its 100hz and not 120hz, i dont think i even seen a 120hz model.

Secondly virtually all reports i read of LG LCDS from this range said they have massive problems displaying 24FPS Blueray video and are not smooth, giving jerking in the motion every few seconds. To be honest have not seen this fault with a previous phillips or sony bravia engine LCD's, im sticking well away from LG in the future.

931.12.2008 12:00

i have 60 hz lcd tv, and whehter i watch a 120 hz or a 60 hz lcd it doesnt make a difference. This panel refresh stuff is completely overrated. what matters is the resolution and contrast. And if you people like a high response then get a plasma, thats why its there for.

1031.12.2008 13:44

it might matter in the future, but right now 120 Hz is the good stuff the graphics Card in my HTPC can do 240 with 16bit color and resolution of 1280x720 which is 720p.

id be more concerned about power drain and Panel heat, than anything else.

SN--

Varnull you maybe right. I don't really care. its just that for a demo shot it looks bad, besides i don't care about the woman in the picture ether. The LCDTV is the star here not her:)

1131.12.2008 14:42
Globe08
Inactive

Personally im agitated with the quickness in which these features are updated. They generally arent noticable and cost out the a$$.On top of the fact it makes everything seem old. I mean i know it sounds like im bashing adavances in technology and the way they do it is designed to make money but us as consumers should be smart enough to not allow this system to continue.

1231.12.2008 16:01

plazma247, it will depend on which region you live in. 100Hz TV's are marketed for those that are on PAL broadcast and 120Hz TV's for NTSC. As the original broadcast coming into the TV is 50Hz for PAL and 60Hz for NTSC, the previous mentioned effectively doubles the refresh rate.

I personally feel that this technology is purely a marketing strategy (and unfortunately it works!). As the original refresh rate is 50Hz/60Hz, anything beyond that is created with algorithms that produce extra frames that were never there to begin with. I am not sure how much the human eye can perceive beyond 100 frames per second. However, I can say that working in a busy Audio Visual Retail store, the bigger numbers certainly attract interest.

I do agree with Globe08, I feel a little nervous about the fact that often times companies will work on technology that looks good on paper and helps to lift sales figures to those that don't know any better. I would much rather see true advances in technology. For example, as we have seen recently LED backlights introduced to replace CCFL backlighting in LCD's... That's innovation.

This message has been edited since its posting. Latest edit was made on 31 Dec 2008 @ 16:03

"Great minds discuss ideas... Average minds discuss events... Small minds discuss people"

PS3 compatible video creation thread... mkv2vob, tsMuxeR etc.: http://forums.afterdawn.com/thread_view.cfm/621809
The complete HD (Blu-ray/HD-DVD) back-up thread.: http://forums.afterdawn.com/thread_view.cfm/639346

1331.12.2008 16:42

Originally posted by DXR88:
OMG.... if your going to display the first fastest refreshing lcd tv in the world, you could make your first impression my turning down the blue and Synchronizing the colors.
My first thought also...

1431.12.2008 19:37

You guys do realize that watching an original broadcast is still at 60Hz, right? What they really should be focusing on is the response time of the display and the contrast as mentioned above.

And Ryu77, I don't even notice a difference beyond 75FPS most of the time. I wonder how OLED's will take off in the future. They seem like a very superior choice, but I'd like to one of them at 52".



1531.12.2008 22:49

i thought Hz's where the response time? the faster the Hz's the more responsive the display.

1631.12.2008 23:50

Well it sorta is, but response time refers to each pixel and how quickly they can change (GtG, which is how fast a pixel can change from one shade to another, and BtB which I think is how fast the pixel can go from one color to another).

Hz use to be the response time for CRT displays because it stood for how fast the entire screen refreshed per second. The higher it was on a CRT, the better the image and the less strain it caused on your eyes. With LCD's, you don't really need that high of a refresh rate. LCD's don't have one electron gun that prints an entire screen, rather they have single pixels that turn on from a digital source.

Anyway, perhaps someone like varnull could explain this a lot better than I did.



171.1.2009 1:23

the Source(external device) is the controller. thats the way its been for years. if your receiver(tv) cannot Do 120hz's the set will blank out or downsample to the correct frequency. i don't find having 480Hz's a problem its a tad overkill at the moment when there are other current LCD issue's that can be tackled.

i find it musingly accurate to the analogy that my Sports car can do 480MPH to your SUV's 120MPH, regardless of how fast they can go the law still requires you to do 60MPH.

This message has been edited since its posting. Latest edit was made on 01 Jan 2009 @ 1:23

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181.1.2009 6:42

Many of you have some good info to pass around. To help me follow the 120hz vs 60hz argument, should I shell out for the 120 or stay with the 60? And if 60hz is the "standard" for now is there a push to increase this to 120hz in the future? Or is 60hz here to stay? I have still been putting the purchase of a bigscreen off cause I want to make the best choice for my money and make it somewhat future proof ;)

191.1.2009 9:02

all i know my mointer set at 50 htz flickers set to 70 htz no more flicker . just clear viewing .so why would i need more ?

201.1.2009 13:35

Originally posted by badkrma:
Many of you have some good info to pass around. To help me follow the 120hz vs 60hz argument, should I shell out for the 120 or stay with the 60? And if 60hz is the "standard" for now is there a push to increase this to 120hz in the future? Or is 60hz here to stay? I have still been putting the purchase of a bigscreen off cause I want to make the best choice for my money and make it somewhat future proof ;)
almost all 32in+ LCD TV's do 120hz's, NTSC standerd dictates that 60hz's is the defacto for all OTA and cable/satellite transmissions. however some things can break that limit for better viewing Such as computers graphics. i don't know if blueray does or not now,but i bet it can.

211.1.2009 17:24

Originally posted by DXR88:
Originally posted by badkrma:
Many of you have some good info to pass around. To help me follow the 120hz vs 60hz argument, should I shell out for the 120 or stay with the 60? And if 60hz is the "standard" for now is there a push to increase this to 120hz in the future? Or is 60hz here to stay? I have still been putting the purchase of a bigscreen off cause I want to make the best choice for my money and make it somewhat future proof ;)
almost all 32in+ LCD TV's do 120hz's, NTSC standerd dictates that 60hz's is the defacto for all OTA and cable/satellite transmissions. however some things can break that limit for better viewing Such as computers graphics. i don't know if blueray does or not now,but i bet it can.
Blu-ray's are mastered with the original theatrical frame rate of 24fps, therefore if your TV has the option to do this, your best viewing would actually be in 24Hz! If your TV can not do this then the player (or receiver) will apply pulldown processing and display the Blu-ray at 60Hz (or 120Hz, 240Hz, 480Hz etc.)

All other DVD's or digital broadcasts use some kind of telecine (3:2 pulldown, PAL speedup etc.) processing, this means the video has been altered in a way that can affect video quality. This is why I am not a big fan of these huge refresh rates. I really don't feel they make the difference that some are lead to believe.
This message has been edited since its posting. Latest edit was made on 01 Jan 2009 @ 17:30

"Great minds discuss ideas... Average minds discuss events... Small minds discuss people"

PS3 compatible video creation thread... mkv2vob, tsMuxeR etc.: http://forums.afterdawn.com/thread_view.cfm/621809
The complete HD (Blu-ray/HD-DVD) back-up thread.: http://forums.afterdawn.com/thread_view.cfm/639346

221.1.2009 21:17

to true Ryu77, it all goes back to the CRT 60 to 75 was one hell of a eye reliever, the 75 to 85 reduced headaches and if your CRT could do 120 you where the shit.

i do believe that it does make a slight difference, in bigger LCD panels. ofcourse what looks good in 60hz to me may not be so with you.

some people have eagle eye's capable of seeing the slightest distortion,
same with audio.


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232.1.2009 2:25

Yeah but under incandescent lighting 60Hz is not largely a problem, as far as im aware most of the headaches were caused by people being under strip (florescent) lighting that operating at 60Hz and there fore created visual issues (flickering) with monitors running at lower refresh rates. Especially 60Hz screens which frequency matched the frequency of the lights, in the same way a timing gun is used on an engine.

As far as im aware no one i know got a headache from 75Hz or above, this is why the range from 75Hz upwards was commonly known as flicker free.

247.1.2009 18:35
zorb43
Inactive

Originally posted by DXR88:
OMG.... if your going to display the first fastest refreshing lcd tv in the world, you could make your first impression my turning down the blue and Synchronizing the colors.
Actually that is just the reflection of the T.V. that is positioned opposite the one in the picture that you cannot see. The T.V. in the picture is turned off and its screen is very reflective when it is a blank screen. The lady in the picture is Mrs. Wong; a very nice lady who has a T.V. in almost every room in her house. She is smiling in the picture because she is anticipating the big colorful picture to pop up on the screen after she pressed tho "ON" button .....

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