High Def Forum - Your High Definition Community & High Definition Resource

Go Back   High Def Forum - Your High Definition Community & High Definition Resource >
Rules HDTV Forum Gallery LINK TO US! RSS - High Def Forum AddThis Feed Button AddThis Social Bookmark Button Groups

Upcoming Display Technologies Talk about the future of display technologies! SED - Surface-conduction Electron-emitter Display FED - Field Emission Display OLED - Organic Light-Emitting Diode PLED - Polymer Light-Emitting Diode SOLED - Stacked OLED TOLED - Transparent Organic Light Emitting Device NED - Nano-Emissive Display

Like Tree3Likes
  • 3 Post By ImRizzo

The future of TVs may not be OLED after all

Reply
AddThis Social Bookmark Button
 
Thread Tools
Old 09-01-2015, 08:41 PM   #1  
Muscle Cars Forever!
Thread Starter
 
Lee Stewart's Avatar
 

Join Date: Jan 2007
Location: Albuquerque, NM
Posts: 46,634
Arrow The future of TVs may not be OLED after all

The future of TVs may not be OLED after all, but something quite different

Quote:
OLEDs are hard to make in TV sizes. Smaller devices like phones have been using them for a while now, with great success. The problem is, when you try and make a TV of 50-inches or more you have production problems.

For 2015 Samsung has pulled all of its OLED TVs and has moved back to LCDs, some of which use a technology called "quantum dots" to produce a very bright and colourful image that comes close to the range OLED offers.

Quantum dot is desirable because making them is reasonably easy, and the yield should theoretically be the same as any LCD TV.

So what's next, and does Samsung have a secret weapon in TVs that it will launch soon? Perhaps, so here's what we know about the technology called QLED.

Is this quantum dot?

No, this is a different technology to quantum dot. In a TV that uses quantum dots a blue LED is used as a backlight source - more than one actually, but focus on just this one for now. This replaces the white LED that is in most LCD TVs with an LED backlight.

Why replace the white LED? Well, because there's no such thing as a white LED in reality.

To make an LED white you take a blue LED and put a substance in it that changes the blue light and makes it white. This is usually phosphor. There's no problem with this, but light from it isn't as pure as it could be, which affects colours and the phosphor also uses up some of the light, so the TV won't be as bright.

So, in a quantum dot TV the white LED is replaced with a blue one, and then some special liquids are used which glow a specific colour when struck with light. The colour they glow is dependent on the size of the dot - larger dots are used for red, and smaller for blue.

Because these colours are reasonably precise, the output needs less filtering, which helps with the output levels and accuracy.
http://www.techradar.com/us/news/tel...ferent-1296520
Lee Stewart is online now   Reply With Quote
Old 09-01-2015, 08:45 PM   #2  
Muscle Cars Forever!
Thread Starter
 
Lee Stewart's Avatar
 

Join Date: Jan 2007
Location: Albuquerque, NM
Posts: 46,634
Default

QLED Introduction

What is a QLED or QDLED?

Quote:
QD LED or QLED is considered as a next generation display technology after OLED-Displays.
QLED means Quantum dot light emitting diodes and are a form of light emitting technology and consist of nano-scale crystals that can provide an alternative for applications such as display technology. The structure of a QLED is very similiar to the OLED technology. But the difference is that the light emitting centers are cadmium selenide (CdSe) nanocrystals, or quantum dots. A layer of cadmium-selenium quantum dots is sandwiched between layers of electron-transporting and hole-transporting organic materials. An applied electric field causes electrons and holes to move into the quantum dot layer, where they are captured in the quantum dot and recombine, emitting photons. The spectrum of photon emission is narrow, characterized by its full width at half the maximum value.
http://www.qled-info.com/introduction/
Lee Stewart is online now   Reply With Quote
Old 01-31-2019, 12:00 PM   #3  
High Definition is the definition of life.
 
tvine2000's Avatar
 

Join Date: Mar 2005
Location: vermont
Age: 69
Posts: 1,264
Default

Quote:
Originally Posted by Lee Stewart View Post
QLED Introduction

What is a QLED or QDLED?



http://www.qled-info.com/introduction/
As you most likely know by now QLED is a fine TV the Samsung 8FN better then the 6 FN. Problem is OLED owners are on the defense right now because of some whistle blowers out there. The main stream media pushes OLEDS as the king of TV, but not the case with it's burn in issues and ABL issues. Crush black issues and the fact it's a organic tech,which is a problem in itself. LG has admitted burn in is an issue with this tech. However you might have noticed burn in is not covered by LG or any manufacturer and many OLED owners didn't know that fact. So I would say your right OLed is not the future, in fact I see it as the son of Plasma's I have discussed these issues with OLED owners and was meant with name calling and your plain wrong offering no facts to prove me wrong. And telling other oled owners you must be doing something wrong to get burn in.The fact is no matter how much you baby this TV ,you will get burn in and then your investment is nothing but a doorstop. Hey OLED looks great and has it's perks over LED, but QLED is making a statement and I'D say will take over OLED in a few years. To dealers and websites that keep pushing OLED and the outright lies you spread ,stop it .Your just trying to make a buck knowing full well the issues with OLED. Sorry Lee, it pisses me off. lol
tvine2000 is offline   Reply With Quote
Old 02-04-2019, 01:08 PM   #4  
ISF Calibrator
 
dsskid's Avatar
 

Join Date: Mar 2005
Location: Long Island, NY
Posts: 5,047
Default

I'd get a QLED, but I have to wait until one of my current displays craps out.
dsskid is offline   Reply With Quote
Old 02-04-2019, 02:08 PM   #5  
HDF SUPER-MODERATOR
 
ImRizzo's Avatar
 

Join Date: Aug 2005
Location: Brooklyn & LI,NY ..not a Place, it's an Attitude, *I'm Mixing up a fresh pitcher of KoolAid
Posts: 23,441
Default

My son has a Samsung QLED and it doesn't hold a candle to my LG OLED with regard to PQ. (he's disappointed).
dsskid, HiDefRev and Rick-F like this.
ImRizzo is offline   Reply With Quote
Old 02-07-2019, 10:48 AM   #6  
High Definition is the definition of life.
 
tvine2000's Avatar
 

Join Date: Mar 2005
Location: vermont
Age: 69
Posts: 1,264
Default

Quote:
Originally Posted by ImRizzo View Post
My son has a Samsung QLED and it doesn't hold a candle to my LG OLED with regard to PQ. (he's disappointed).
If you look up the history of OLED you'll find it was never mean't for consumers, it was invented for photographs only. With the proper settings on a QLED it will come really close to an OLED. And it's only going to get better. Your happy with OLED and that's all that counts. I'm trying to help here. There are real issues with OLEDS ABL for one .You can't get the brightness of a LED because if you bring up the brightness of an oled colors get washed out.2. the big one ,burn in ,it's going to happen no matter what your habits are to prevent it. I have heard of oled owners aware of the issue limit there hours watching TV, you can't play video games on them ,I wouldn't. And watching cable news with it';s static logos is not a good thing ether. I know the blacks on oleds vs LED can't be matched. QLED comes so close ,side by side with an oled it's honestly hard to tell. The problem with oled is its an organic technology,and as time goes by, the pixels degrade. I'm just saying I don't want to baby sit a TV. True with proper settings you can slow down the life of an oled. I suggest ,just suggest go into your settings and go to RGB and put up a red ,blue or white screen ,if theres burn in you will see it there. my main thing is with oled is ,burn in is not covered with a warranty. That's just not right. LG and any company making OLEDS should be sued and make sure burn in is covered.
tvine2000 is offline   Reply With Quote
Old 02-07-2019, 05:16 PM   #7  
Muscle Cars Forever!
Thread Starter
 
Lee Stewart's Avatar
 

Join Date: Jan 2007
Location: Albuquerque, NM
Posts: 46,634
Default

OLED screen burn-in: What you need to know

https://www.cnet.com/news/oled-scree...-need-to-know/
Lee Stewart is online now   Reply With Quote
Old 02-13-2019, 02:17 PM   #8  
HDF SUPER-MODERATOR
 
ImRizzo's Avatar
 

Join Date: Aug 2005
Location: Brooklyn & LI,NY ..not a Place, it's an Attitude, *I'm Mixing up a fresh pitcher of KoolAid
Posts: 23,441
Default

Another thing to take into consideration QLED is still an LCD display and suffers from off-axis degrading of pictures.
ImRizzo is offline   Reply With Quote
Sponsored Links
Go Back   High Def Forum - Your High Definition Community & High Definition Resource >
AddThis Social Bookmark Button
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -6. The time now is 04:51 PM.



Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Copyright 2004 - 2018, MH Sub I, LLC dba Internet Brands