Feeds

Telly vision: future display technologies

Coming soon to a screen near you...

The Essential Guide to IT Transformation

Feature Karl Ferdinand Braun could never have imagined how fiercely competitive and technologically advanced the global market for displaying still and moving images on a screen would become during the hundred or so years since he created the Cathode Ray Tube (CRT).

But in a world where CRT once reigned supreme, Liquid Crystal Display (LCD), plasma and Digital Light Projection (DLP) TVs have taken its place. Plenty of CRTs are sold each year, but it's clear that the technology's days are numbered.

sony 'super top emission' oled tv panels
Several OLED TVs, yesterday

But how long have its successors got left to them? LCD, plasma and DLP offer some key advantages over CRT: they can be made much thinner, and can scale to bigger screen sizes and larger resolutions. But for all the advancements made to each technology, a fair few viewers believe - with good reason - that clunky old CRT TVs still produce better pictures.

That means there's a gap in the market for a flat-panel display that can present a moving picture that's as bright and as blur-free as a CRT but also supports the high resolutions only LCD, DLP and plasma can provide.

So what technology might such a screen use? Enter a whole new set of acronyms to encounter: OLED, SED and LCoS. Not to mention the positively Star Wars-sounding laser TV...

OLED

The development of OLED technology stretches right back to the 1950s, but the first demonstration of the kind of screens we know today took place in 1996. The technique utilises organic compounds that generate light when they're fed with an electric current. Deposit tiny drops of a given compound onto a glass or plastic panel and sandwich it between a grid of positive and negative electrodes and you've got a simple, single colour OLED panel. Combine three of these into one and you have the basis for a three-colour - red, green and blue - panel capable of displaying colour pictures.

Sony XEL-1 OLED TV
Sony's XEL-1 OLED TV

Because OLED panels generate their own light, they don't need a separate light source the way an LCD panel does. That not only helps reduce their power consumption - up to 40 per cent less than LCD, it's claimed - but leads to better colour reproduction. The trouble with a backlight is that it's always lit no matter how few pixels are showing a colour other than black. OLED pixels only consume power when they're lit.

Build a business case: developing custom apps

Next page: SED

More from The Register

next story
4K video on terrestrial TV? Not if the WRC shares frequencies to mobiles
Have your say with Ofcom now, before Freeview becomes Feeview
iPad? More like iFAD: We reveal why Apple fell into IBM's arms
But never fear fanbois, you're still lapping up iPhones, Macs
You didn't get the MeMO? Asus Pad 7 Android tab is ... not bad
Really, er, stands out among cheapie 7-inchers
Apple winks at parents: C'mon, get your kid a tweaked Macbook Pro
Cheapest models given new processors, more RAM
YES, iPhones ARE getting slower with each new release of iOS
Old hardware doesn't get any faster with new software
Leaked Windows Phone 8.1 Update specs tease details of Nokia's next mobes
New screen sizes, dual SIMs, voice over LTE, and more
Microsoft stands on shore as tablet-laden boat sails away
Brit buyers still not falling for Windows' charms
Nintend-OH NO! Sorry, Mario – your profits are in another castle
Red-hatted mascot, red-colored logo, red-stained finance books
prev story

Whitepapers

Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.
Why and how to choose the right cloud vendor
The benefits of cloud-based storage in your processes. Eliminate onsite, disk-based backup and archiving in favor of cloud-based data protection.
The Essential Guide to IT Transformation
ServiceNow discusses three IT transformations that can help CIO's automate IT services to transform IT and the enterprise.
Maximize storage efficiency across the enterprise
The HP StoreOnce backup solution offers highly flexible, centrally managed, and highly efficient data protection for any enterprise.