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What's the Differences Between LCD, Plasma, HDTV, LED, and OLED?
There are many technologies emerging in display devices like TVs. Every
technology excels in particular feature of display and has particular method
of display. Different technologies used in TVs are:
LCD TV:
LCD (Liquid Crystal Display) televisions are thinner and lighter and provide
much sharper and clearer picture than CRTs of similar size. They are ideally
used for cell phone displays, computer monitors and to view still images.
LCD technology uses two major components to display, namely; Cold Cathode Florescent Lamps or CCFLs and molecules of liquid crystals. The CCFLs are used to illuminate the liquid molecules with white light, and as the light passes through, an image is created.
LCD TV has the following advantages over CRT TV; flat and much lighter, a higher resolution, wider viewing angle of up to 175 degrees, lower power consumption, resistant to burn in due to static images, and are ideal for naturally lit environments. However, there are some disadvantages to this technology such as a low contrast ratio and inability to achieve true black picture quality.
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LCD TVs have a flat screen so there will be no picture distortion and dont have screen burn in like curved tube TVs.
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In general, LCD viewing angle is 175 degrees. The picture can be viewed 87 degrees from each side.
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LCD TVs are very economical to use and screens less than 35 are fairly inexpensive.
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LCD TVs are backlit and blocks outside light. So, they are suitable for natural lighting situations.
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Most LCD TVs have a half life (50% of original brightness) span of over 30,000 hours (16 years of viewing at 6 hours per day).
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LCD sizes generally range from 13 to 65 but some manufacturer will offer up to 100 sizes.
Plasma TV:
A Plasma Display Panel (PDP) is a flat panel display used in large TV
displays. They have better and accurate color generation than LCDs, and with
far display, wider viewing angles, and do not experience degradation at high
angles compared to LCD. Plasma displays are ideal for viewing motion video in
large displays.
The shortcomings of LCD TV led to the development of Plasma Display Panel, otherwise known as Plasma TV. With this technology, images are created from gases containing neon and xenon atoms.
Plasma TV technology boasts of a rich variation of colors, due to an advanced color generation feature, that is able to generate true black picture quality.
The viewing distance and angles are also wider, ranging from 160 and up to 180 degrees, which is more than what can be achieved with LCD TV. Plasma TV also has a higher lifespan than LCD TV. The downside of this technology is that the viewing capability, especially the brightness is greatly diminished in poor lighting conditions, lower resolution, and an irreparable back light.
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Plasma screen sizes generally ranges from 32 to 84 but some offer screen sizes up to 100.
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Plasma pixel, technology provides a brighter picture with more contrast between the blacks and whites than standard TV.
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In general, plasma TVs viewing angle is 160 to 180 degrees and picture can be viewed from any angle.
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On an average Plasma TVs have a half life (50% of brightness) of 50,000 to 70,000 hours (20 years of viewing 6 hours a day to 50,000 hours).
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Some plasma TVs are provided with upgradeable video cards that which helps to match with future technology.
HDTV:
HDTV or High-Definition Television is a digital television broadcasting system
offering a higher resolution compared to regular television systems. HDTV is
digitally broadcast unlike earlier analog broadcasting, because digital
television (DTV) signals require reduced bandwidth because of digital video
compression.
HDTV will not have standard TV problems, like low quality sharpness, troubles
with brightness or contrast, spots, other visual, or audio imperfections,
problems like double images (ghosting), and weak signals. HD television
provides clearer pictures with excellent sound quality, a wider viewing screen
and up-to-date scanning. HDTV will provide more and superior channels provided
by regular satellite or cable television with theater system experience.
LED TV:
A more advanced technology in television display is the LED TV. This is
basically an advanced model of LCD TV, which uses Light Emitting Diodes
instead of the traditional Cold Cathode Florescent Lamps for its back light. They
are ideally used for low-energy indicators, as substitutes for traditional
light sources in general lighting and automotive lighting.
The major advantage of using LEDs is that it eliminated the numerous black spots that were as a result of using fluorescent lights. LED TV has the best color levels and contrast ratio, hence superb picture quality that is viewable from wider angles; its power consumption is significantly lower, is shock resistant and longer lasting than its predecessors.
The only shortcoming to LED TV is that it is more expensive than LCD and Plasma TV.
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LED TV will currently more than a standard LCD or plasma TV
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LED TV has got great looks and very easy to Install.
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Edge-lit LED television will consume 30-40% of less power than LCD or plasma TV. But backlit LEDs will consume more power.
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Brighter picture can be viewed with LED television compared to a standard LCD TV
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LED TV that is backlit, with local dimming and RGB LEDs, will have an enhanced picture and better contrast ratio and colour accuracy compared to standard LCD TV.
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It has a long lasting life and also eco friendly
OLED TVs:
OLED (Organic Light Emitting Diode) TVs depend on light emitting polymer
technology. Its features including,
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In OLED TVs, there is no need for backlights or extra heaters or coolers, so there is less power consumption.
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As OLED materials has the capacity to support full spectrum of visible light, so there will be higher contrast and it has high-speed refresh rates.
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OLEDs are much faster than LCDs. Fast motion and quick eye movement pictures are more realistic.
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It has larger viewing angle and for near-eye applications, it provides more pleasant viewing without distortion.
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The OLED TVs will make virtual images to look realistic and can be viewed easily for longer periods.
Before purchasing a television, know the difference between each technology
and purchase the one which has features you desire and comes in your budget.
VIZIO 2011 HDTV Comparison
| Series |
XVT3D-0SV
|
XVT3D-4SV
|
XVT-3SV
|
M-0SV
|
E-2VL
|
| Display Sizes | |||||
| Panel Type |
Edge-Lit LED
|
Full Array LED
(47", 55") Edge-Lit LED (42") |
LED with
Smart Dimming |
Edge-Lit LED
(42") LED with Smart Dimming (47") |
CCFL
|
| 3D Ready |
Theater 3D
|
Full HD 3D
|
Full HD 3D
|
--
|
--
|
| Resolution |
1080p
|
1080p
|
1080p
|
1080p
|
1080p
|
| Contrast Ratio |
1,000,000:1
|
10,000,000:1
(47", 55") 1,000,000:1 (42") |
1,000,000:1
(32", 37") 10,000,000:1 (47", 55") |
200,000:1
(42") 2,000,000:1 (47") |
50,000:1
|
| Response Time: |
5 ms
|
4 ms
|
5 ms
|
5 ms
|
5 ms
|
| Refresh Rate |
120Hz
|
480Hz
|
120Hz (32", 37")
240Hz (47", 55") |
120Hz (42")
240 Hz (47") |
60Hz
|
| Light Sensor |
 |
|
--
|
|
|
| VIZIO Internet Apps |
|
|
|
|
|
| Wireless LAN |
802.11n
Dual Band |
802.11n
Dual Band |
802.11n
Dual Band |
802.11n
|
802.11n
|
| Ethernet |
|
|
|
|
|
| HDMI Inputs |
5
|
5
|
4 (32", 37")
5 (47", 55") |
4
|
2
|
| Component Inputs |
1
|
1
|
1
|
1
|
1
|
| Composite Inputs |
1 (shared)
|
1
|
1
|
1 (shared)
|
1
|
| Digital Audio Output |
|
|
|
|
|
| PC Input |
|
|
|
|
|
| USB 2.0 Ports |
3
|
3
|
3
|
2
|
1
|
| MP3 Playback |
|
|
|
|
--
|
| JPEG Playback |
|
|
|
|
|
| MPEG Playback |
|
|
|
--
|
--
|
May be available via future firmware update.
VIZIO 2011 HDTV Comparison (continued)
| Series |
E-0VLE
|
E-2VA
|
E-0VP
|
E-0MV
|
E-0VT
|
E-1VO
|
| Display Sizes | ||||||
| Panel Type |
CCFL
|
CCFL
|
Edge-Lit LED
|
Edge-Lit LED
|
Edge-Lit LED
|
CCFL
|
| 3D Ready |
--
|
--
|
--
|
--
|
--
|
--
|
| Resolution |
1080p
|
1080p
|
1080p
|
1080p
|
1080p
|
1080p
|
| Contrast Ratio |
100,000:1
|
50,000:1
|
200,000:1
|
20,000:1
|
100,000:1
|
100,000:1
|
| Response Time: |
8 ms
|
5 ms
|
5 ms
|
5 ms
|
8 ms
|
5 ms
|
| Refresh Rate |
60Hz
|
60Hz
|
60Hz
|
60Hz
|
60Hz
|
60Hz
|
| Light Sensor |
|
|
|
|
|
|
| VIZIO Internet Apps |
--
|
|
--
|
--
|
--
|
--
|
| Wireless LAN |
--
|
802.11n
|
--
|
--
|
--
|
--
|
| Ethernet |
--
|
|
--
|
--
|
--
|
--
|
| HDMI Inputs |
2
|
4
|
3
|
2
|
3
|
3
|
| Component Inputs |
1
|
1
|
1
|
1
|
1
|
1
|
| Composite Inputs |
1
|
1
|
1 (shared)
|
1
|
1 (shared)
|
1
|
| Digital Audio Output |
|
|
|
|
|
|
| PC Input |
|
|
|
|
|
|
| USB 2.0 Ports |
1
|
2
|
1
|
1
|
1
|
1
|
| MP3 Playback |
--
|
|
--
|
--
|
--
|
--
|
| JPEG Playback |
|
|
|
|
|
|
| MPEG Playback |
--
|
|
--
|
--
|
--
|
--
|
May be available via future firmware update.
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