Linked by Hadrien Grasland on Sun 4th Sep 2011 12:39 UTC
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LED
by jockygerald on Tue 6th Sep 2011 09:38 UTC
jockygerald
Member since:
2011-09-06

The LCD screens are now old the New Led Screens are just awesome and give feel of true picture and the glare problem is also minimum

Edited 2011-09-06 09:42 UTC

Reply Score: 1

RE: LED
by Neolander on Tue 6th Sep 2011 11:55 in reply to "LED"
Neolander Member since:
2010-03-08

Most stuff sold as a LED screen nowadays is just a LCD with a white LED backlight. More than 30% of the input energy still gets converted to heat in the most optimistic case of displaying a white image. I'd love to see OLEDs and reflective technologies everywhere, but we're not there yet.

Also, glare does not come from the LCD technology itself, but from manufacturers' choice to put a polished, shiny coating in front of the screen. I've heard that it makes sense for touchscreens and ensures truer color rendering, but I'm not convinced that the benefits outweight the costs.

Edited 2011-09-06 11:59 UTC

Reply Parent Score: 1

RE[2]: LED
by transputer_guy on Tue 6th Sep 2011 21:10 in reply to "RE: LED"
transputer_guy Member since:
2005-07-08

The Unipixel company in Texas had a TMOS panel based on a modified LCD LED structure. They replaced the LCD tricolor cell for a single Time Multiplexed Optical Switch and did RGB in time sequential mode. I had really great hopes for it since Samsung took a license in 09, but no word of it since.

Also they reported the classic LCD cell is less than 5% optically efficient so almost all the CFL or LED light source is turned into heat even for all white display. The TMOS cell is about 60% efficient so that would have been a huge power saver if it was used in tablets or laptops. Oh well, OLED might arrive one day.

Reply Parent Score: 2

RE: LED
by transputer_guy on Tue 6th Sep 2011 21:37 in reply to "LED"
transputer_guy Member since:
2005-07-08

Actually given where LED is today, some of the CCT standard LCD displays still on sale look quite terrible, too much bezel, and thickness leads to a lot more weight.

It is possible to do 2" thin in a standard LCD like Lenova does and match LED power too, but I suspect LCD with CCTs will be mostly gone in 1 year or so except for some of the pro models.

Reply Parent Score: 2