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LED TV vs. OLED TVs

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Eloquent the differences can help consumers make the perfect TV selection for their procurement desires.

When probing for OLED and LED TVs, consumers scrutinize available options before deciding which TV model to purchase. Likewise, they want to learn about the differences between the two technologies, including the advantages and disadvantages of each.

 

LED TV

Pros: LED sets offer the widest array of price points, sizes and features. No-frills, 39-inch LED TV are available for as little as $300, while a top-of-the-line, 90-inch model can go for $8,000 or more. LED models are thin and light, so you can install them anywhere from a kitchen counter to a wall above a fireplace. The picture quality of LED LCDs has continually improved, narrowing the gap with plasma sets.

Cons: LED TVs still exhibit imperfections when displaying rapid motion, as in sports. (Picture quality can also vary widely among LED LCD models.) Because of the way LCD picture elements are lit, they can't go completely black, and tend to gloss over subtle details in shadowy scenes.

OLED TVs

Pros: The best TV picture, bar none, available today. Colors truly pop on these sets, and blacks look blacker than on any LED. A favorite demonstration of OLED technology involves footage of fireworks against a black sky.

Cons: Price is a definite restrain for OLED TVs right now. The first two 55-inch sets in the United States, from LG and Samsung, cost roughly $9,000. It's uncertain how the screens will fair over time, including whether they will retain "ghost" images (also known as burn-in) from displaying a static picture for too long.

LED TVs and OLED (Organic LED) TVs are widespread because of their low power consumption, grander picture quality, and light build. However, LED TVs and OLED TVs are vastly different in terms of cost, lifespan, technology, and potential size.

OLED TVs are said to have better picture quality, use less power, and have a much faster response time than LED TVs. But OLED technology is still relatively new, meaning OLED TVs are more expensive, and their lifespan has not yet been tested to match the 100,000-hour lifespan of LEDs.

Nevertheless OLED TVs are thinner and weigh less, they also come in fewer large sizes. Unlike LED TVs, which go up to 90 inches in size, the largest OLED to date is only 55 inches, though this may change very soon.

 

 Differences between LED and OLED TVs

The differences between LED and OLED TVs include brilliance methods, price points, and energy competence levels. The list below documents these differences.

The main difference between an LED TV and an OLED TV is that the pixels of an OLED TV are self-illuminating, whereas the LEDs in an LED TV are used to light an LCD display.

LED TVs are currently less expensive than OLED displays, though eventually experts expect OLED TVs to drop significantly in price.

OLED TVs feature a wider viewing angle than do LED TVs. With OLED, the colors do not get washed out when viewers watch from extreme angles.

OLED technology offers the capability to develop lighter and thinner displays than LED TVs do.

OLED TVs offer the deepest blacks of any type of flat-screen diode TV available.

OLED TVs have the ability to make a greater number of colors, though this advantage is infinitesimal when compared to the current level of HDTV technology, limiting the number of colors that can be utilized.

OLED TVs are more energy efficient when compared to their LED counterparts.

Black Level

A display’s ability to produce deep, dark blacks is arguably the most important factor in achieving excellent picture quality. Deeper blacks allow for higher contrast and richer colors (among other things) and, thus, a more realistic and dazzling image. When it comes to black levels, OLED supremacies as the unquestionable champion.

LED TVs rely on LED backlights shining behind an LCD panel. Even with advanced dimming technology that dims LEDs that don’t need to be on at full blast, LED TVs struggle to produce dark blacks. They also suffer from light bleeding out from the edges.

OLED TVs writhe from none of those problems. If an OLED pixel isn’t getting electricity, it doesn’t produce any light and is, therefore, totally black

Brightness

When it comes to brightness, LED TVs have a slight advantage. LEDs are just really good at getting extremely bright. OLED TVs can get bright, too, but cranking OLED pixels to maximum brightness for extended periods not only reduces that pixel’s lifespan, but the pixel also takes a little while to return to total black.

Color space 

Both of the recently introduced OLED TVs are capable of covering a wider range of color space than LED televisions. Very basically explained, this means they can reproduce finer shades of more colors within the visible color spectrum.

Response time

While LED TVs have enhanced noticeably over the past few years, OLED simply blows them out of the water in terms of response time. In fact, OLED currently offers the fastest response time of any TV technology in use today, making it a clear winner in this regard. With faster response time comes less motion blur and fewer artifacts.

Energy consumption

Certain LED LCDs have the lowest energy consumption OLEDs get more efficient; expect to see reductions in power consumption

OLED Advantages and Disadvantages

The LCD is currently the display of choice in small devices and is also popular in large-screen TVs. Regular LEDs often form the digits on digital clocks and other electronic devices. OLEDs offer many advantages over LEDs:

The plastic, organic layers of an OLED are thinner, lighter and more flexible than the crystalline layers in an LED or LCD.

Because the light-emitting layers of an OLED are lighter, the substrate of an OLED can be flexible instead of rigid. OLED substrates can be plastic rather than the glass used for LEDs and LCDs.

OLEDs are brighter than LEDs. Because the organic layers of an OLED are much thinner than the corresponding inorganic crystal layers of an LED, the conductive and emissive layers of an OLED can be multi-layered. Also, LEDs and LCDs require glass for support, and glass absorbs some light. OLEDs do not require glass.

OLEDs do not entail backlighting like LCDs (see How LCDs Work). LCDs work by selectively blocking areas of the backlight to make the images that you see, while OLEDs generate light themselves. Because OLEDs do not require backlighting, they consume much less power than LCDs (most of the LCD power goes to the backlighting). This is especially important for battery-operated devices such as cell phones.

OLEDs are easier to produce and can be made to larger sizes. Because OLEDs are essentially plastics, they can be made into large, thin sheets. It is much more difficult to grow and lay down so many liquid crystals.

OLEDs have large fields of view, about 170 degrees. Because LCDs work by blocking light, they have an inherent viewing obstacle from certain angles. OLEDs produce their own light, so they have a much wider viewing range.

Problems with OLED

OLED seems to be the perfect technology for all types of displays, but it also has some problems:

Lifetime - While red and green OLED films have longer lifetimes (46,000 to 230,000 hours), blue organics currently have much shorter lifetimes (up to around 14,000 hours[source: OLED-Info.com]).

Manufacturing - Manufacturing processes are expensive right now.

Water - Water can easily damage OLEDs.

Now we will discuss the alteration in OLED & LED TV.

Thickness

LED edge backlit LCD TVs are thinner than CCFL LCD TVs. Often less than 1 inch.

OLED TVs are thinner than LED TVs (hence all other TVs) because of teh size of their diodes

Screen size

Up to 90 inches

Up to 55 inches (yet)

Power consumption

LED-lit LCD TVs consume lesser power around 70% compared to Plasma TVs.

Requires less power as compared to LCD or Plasma TV

Cost

$100 (small size and very low end) - $25,000

$9,000 - $15,000

Burn-in

Burn-in is very rare

Burn-in is unlikely, but OLED TVs are susceptible to burn-in if TV is abused.

Life span

Around 100,000 hours

Not yet tested. Recent improvements allow up to 43,800 hours

Contrast Ratio (difference between the deepest black compared to the brightest white)

Worse than plasma TVs. All LCDs produce brighter whites, but brighter blacks as well. Locally-dimmable LED backlit LCD TVs can mitigate this to improve contrast ratios.

Infinite contrast ratio; much better than LED

Weight

Lighter compared to plasma TV

Lighter compared to LED TV

Mechanism

Light emitting diodes

Organic Light emitting diodes

Viewing angle

The brightness and color on LCD TVs shift noticeably over the screen and depending on viewing angle

170 degree viewing angle

Brightness and color

Brighter than plasma or OLED

Not as bright as LED

Screen Thickness

Thinner than LCD, plasma

Even thinner than LED (hence other TVs)

Energy Use

Less for dynamically backlit LCD TVs, about as much for statically backlit ones.

Less than LED TVs

Picture Quality

Better than most TVs, but not as good as OLED

Better than LED TV and other TVs

Backlight

Yes

No

 

Popular Brands of OLED and LED TVs

The list below includes popular LED TV manufacturers, from Philips, to Sharp, to Vizio.

Panasonic

Philips

Samsung

Sharp

Sony

Toshiba

Vizio

BIBLOGRAPHY

http://electronics.howstuffworks.com/oled5.htm

 http://www.cnet.com/news/led-lcd-vs-oled-vs-plasma/

http://www.digitaltrends.com/home-theater/oled-vs-led-which-is-the-better-tv-technology/#!0bMen

 

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