how soon CCFL is going to be completely replaced by LED?
-
Now Available: Tech Talk Podcast with Scott Wilkinson, Episode 19 Click here for details.
1 - 18 of 18 Posts
Joined
·
152 Posts
Possibly 2011 or after? I hear that LED backlighting is slightly cheaper than CCFL backlighting, but at least for 2010 manufacturers have both to have price separation between the two to charge a bit of a premium for LED backlit sets (that premium is eroding though)
Inexpensive CCFLs can still put out a good color of white light in a uniform configuration, right? Any issues with lower-priced LED solutions that compromise their color accuracy due to blueish white backlighting (I know more expensive white LEDs use a good, pure color combination to create white light, but what about cheaper ones that tend to have a higher-than-ideal color temperature)? And aren't side-lit LEDs (the more affordable variety) problematic because of the columnar effect and off-angle weirdness?
Don't get me wrong, the day the last CCFL backlight is made will be a good day as far as I'm concerned, just have a few questions about the state of the technology and how it can be adopted in the lower cost sector without a reduction in quality.
Don't get me wrong, the day the last CCFL backlight is made will be a good day as far as I'm concerned, just have a few questions about the state of the technology and how it can be adopted in the lower cost sector without a reduction in quality.
Hi
at least at present such as High-End LCD TVs w/CCFL are fine!
Prices are also very good too!!
no any reason to jump LED TV at present while you have a CCFL
TV as well!!
2011/2012 is OK for LED+
So do not rush
I'm satisfied with my Tosh CCFL too!!
Bye+
at least at present such as High-End LCD TVs w/CCFL are fine!
Prices are also very good too!!
no any reason to jump LED TV at present while you have a CCFL
TV as well!!
2011/2012 is OK for LED+
So do not rush
I'm satisfied with my Tosh CCFL too!!
Bye+
Joined
·
164 Posts
Your answer (and this is from official sales projections):
2009 had 3m. led backlit tv's sold
2010 has projected 16m. led backlit tv's sold
2011 will have 'majority' of LCD displays sold with led backlighting (CCFL will be minority)
2012 and beyond is where CCFL will fade to black
Your answer (and this is from official sales projections):
2009 had 3m. led backlit tv's sold
2010 has projected 16m. led backlit tv's sold
2011 will have 'majority' of LCD displays sold with led backlighting (CCFL will be minority)
2012 and beyond is where CCFL will fade to black
Practically every manufacturer this year has an edge lit/back lit hybrid...once these sets are out for a while and a consensus is reached on the picture quality vs the shortcomings, I believe will go a long way in how quickly CCFL gets phased out. If these hybrid models eliminate the issues associated last years edge lit models it will be sooner than later.
So if i want to purchase a tv this year, should i go for a led one and avoid a ccfl one as it is going to be non-exist in next year or two? or, maybe i should go for a ccfl one as i may get a good deal out of it since it is out of favor?
So if i want to purchase a tv this year, should i go for a led one and avoid a ccfl one as it is going to be non-exist in next year or two? or, maybe i should go for a ccfl one as i may get a good deal out of it since it is out of favor?
Are all LED backlit sets created equal? (Okay, obviously not, but hear me out.)
White light LEDs are made by combining other colors. The most pure whites come from blue/orange combination LEDs if I remember correctly. Are they used universally, or are LEDs with poorer white balance that might be less expensive used in lower tier LED lit sets?
CCFL lighting is respectably neutral and doesn't skew the picture one way or another beyond what the hardware and software of the TV can take care of, but LEDs with a fundamental white imbalance could cause problems, especially if the hardware/software otherwise haven't been changed to accommodate them. If it IS a problem, I would imagine it's mostly going to affect lower end sets and early-adopters, but I am not sure if it is a problem at all. Anyone know enough to comment?
White light LEDs are made by combining other colors. The most pure whites come from blue/orange combination LEDs if I remember correctly. Are they used universally, or are LEDs with poorer white balance that might be less expensive used in lower tier LED lit sets?
CCFL lighting is respectably neutral and doesn't skew the picture one way or another beyond what the hardware and software of the TV can take care of, but LEDs with a fundamental white imbalance could cause problems, especially if the hardware/software otherwise haven't been changed to accommodate them. If it IS a problem, I would imagine it's mostly going to affect lower end sets and early-adopters, but I am not sure if it is a problem at all. Anyone know enough to comment?
I thought back-lit LED with Local Dimming produced the best blacks with LCD. To me, that would be the reason to get an LED.
On the other hand, I have a problem with side-lit LED as it seems that form has triumphed over function with the super thin side-lit LED models.
I thought back-lit LED with Local Dimming produced the best blacks with LCD. To me, that would be the reason to get an LED.
On the other hand, I have a problem with side-lit LED as it seems that form has triumphed over function with the super thin side-lit LED models.
LEDs allow for zoned backlighting. This can be good or bad, depending on the number of zones and the physical implementation.
Current sets have limited number of zones which is always going to introduce some abnormality in the picture provided. As a zone lightens or darkens, it will do so to more of the image than needed, due to the zone controlling the light emitted.
Getting to the point where each LED is independently controlled would, in theory, produce perfect behavior. The expense to get there, however, would likely be prohibitive with today's technology.
Anybody buying a set today should rely on their own evaluation of the pq of the sets under consideration first. Whichever technology delivers the most enjoyable pq is the right one.
Current sets have limited number of zones which is always going to introduce some abnormality in the picture provided. As a zone lightens or darkens, it will do so to more of the image than needed, due to the zone controlling the light emitted.
Getting to the point where each LED is independently controlled would, in theory, produce perfect behavior. The expense to get there, however, would likely be prohibitive with today's technology.
Anybody buying a set today should rely on their own evaluation of the pq of the sets under consideration first. Whichever technology delivers the most enjoyable pq is the right one.
Even the true LED sets (non-edge lit) have a limited number of zones as mentioned by other commenters. I think one current 47 inch set is billed as having 80 zones. Someone better at math can calculate the surface area per zone, but that seems not so many for a large screen. So the local dimming may not be all that functional unless the dark parts of the image are reasonably large.
Also it seems like the various high tech image enhancements sometimes introduce problems of their own, such as the dimming becoming disruptive to the viewer, depending on the image being displayed. One thing I do notice in some stores, they save the 1080p feed for the LEDs! So everyone walks by and comments how good the LED sets look
![]()
Also it seems like the various high tech image enhancements sometimes introduce problems of their own, such as the dimming becoming disruptive to the viewer, depending on the image being displayed. One thing I do notice in some stores, they save the 1080p feed for the LEDs! So everyone walks by and comments how good the LED sets look
"We found that LEDs with local dimming can enhance black levels and contrast to varying degrees. We saw distinct improvement on a few sets, such as the 46 inch Samsung UM46B8500, $2,740, but less effective implementations of local dimming can create undesireable effects such as halos around objects or odd illumination of dark areas. You can turn off local dimming, but then you'll lose any improvements in blac levels."
This is consistent with the oft repeated statement that the Samsung 8500 is the best LCD at the moment. Sony XBR8 also does pretty well with back-lit LED and local dimming.
This is consistent with the oft repeated statement that the Samsung 8500 is the best LCD at the moment. Sony XBR8 also does pretty well with back-lit LED and local dimming.
Al Griffin's Feb/March 2010 Sound and Vision review of the Samsung UN46B8500 ends as follows:
"The only issues that would temper my enthusiasm are it's limited viewing angle and its price - at $3600 list, you're definitely paying for the UN 46B8500's performance. But if you're swayed by neither of those issues, you can rest easy knowing that this slim Samsung is the best LCD TV we've tested in the past year."
"The only issues that would temper my enthusiasm are it's limited viewing angle and its price - at $3600 list, you're definitely paying for the UN 46B8500's performance. But if you're swayed by neither of those issues, you can rest easy knowing that this slim Samsung is the best LCD TV we've tested in the past year."
1 - 18 of 18 Posts
