New Television technologies

[SagaLore]

I've been reading up on all the different types of televisions, and I'm stumped. I avoided Plasmas like the plague because of burnin-fear - plus when I saw them when they first came out I thought they looked awful. But after doing some reading on new plasmas, then checking them out, I realized they were the best TV for what I want it for.

Anyways - besides the ones mentioned, post some new technologies you came across that aren't finished being developed yet, or maybe even ideas of your own. For example, I found this the other day:

SED television - Uses a screen of electron emitters to replaces the conventional electron gun. Besides the obvious advantage of a flat tv, I also see this fixing the geometry problems with CRTs.

One of the biggest problems with LCDs are their inherent problems with producing true blacks, because the entire panel is constantly lit with a backlight. Each pixel is composed of 3 subpixels of Red, Green, and Blue. I think the solve the blacks issue, is to do away with the global blacklight and add another subpanel of LEDs. So there would be one LED for every main pixel.

Another idea I had was to use a UV bulb for the backlight of LCD, then have a panel of phosphor-based pixels in front of the LCD.

 

[cheesehead]

Your idea with the LCD is not a bad one, but you'd need a freakishly high-resolution LCD to make it work, and LCDs absolutely hate UV - it makes 'em fry.

OLED screens, if they can be made to work, are very nice - however, they're currently very expensive as well. DLP projectors (as always) give amazing picture, though it works poorly in a lit room. SED has the advantage of being relatively cheap to make (CRT production equipment already exists - not much new here) if the whole carbon nanotube mess can be sorted out.

 

[imported_inspire]

No to hijack, but would SED display an interlaced image natively?

 

[Howard]

Originally posted by: inspire
No to hijack, but would SED display an interlaced image natively?

Sure. Interlacing means nothing to the actual display.

 

[SagaLore]

Awesome! Just came across this:

http://www.evidenttech.com/applications/quantum-dot-led-electroluminescence.php

Its QLEDS = Quantum dot LEDs. You can create sheets of this stuff. If its affordable to produce in high quantities, I foresee this becoming our next visual technology.

 

[sdifox]

Originally posted by: inspire
No to hijack, but would SED display an interlaced image natively?

I wouldn't call it natively... it would line double the interlaced signal to make it non-interlaced. Digital displays are inherently non-interlaced.

 

[imported_inspire]

Originally posted by: sdifox

Originally posted by: inspire
No to hijack, but would SED display an interlaced image natively?

I wouldn't call it natively... it would line double the interlaced signal to make it non-interlaced. Digital displays are inherently non-interlaced.

Ah, I thought it might de-interlace and display at 30Hz...

 

[NZ]

whats the difference between plasma and lcd?

 

[sdifox]

Originally posted by: NZ
whats the difference between plasma and lcd?

Err, I'll do the short version.

Plasma is a little exotic gas (read rare gas) in a chamber being excited by a magnetic field. Each colour has its own chamber so 3 of these make up 1 pixel.

Biggest problem with plasma is decay rate (doesn't go black fast enough) and energy consumption. Compounded by cost down, it means your plasma tv is not going to live very long.

LCD is ancient compared to Plasma. A charge is applied in a certain direction to align the cristal a particular way, light passed though it, forming a particular colour. 3 of them make 1 pixel.

Problem with LCD is colour accuracy (I am not even sure there are 24bit panels out), response time (which is improving greatly) and since it is backlit, lower brightness compared to plasma.

 

[Bladen]

Actually the plasma in plasma tv's is a mixture of 2 "gases", neon and xenon, except that plasmas are not gases they are plasmas; the 4th state of matter (and universally most predominant). When a gas gets heated enough to separate its electrons from it, it then ceases being a gas and becomes a plasma. Due to the electrons being separated, plasmas are ionic, and as such can conduct electricity.