PLASMA TVPLASMA TV

INTRODUCTIONINTRODUCTION

For the past 75 years, the vast majority of televisions For the past 75 years, the vast majority of televisions have been built around the same technology: the have been built around the same technology: the cathode ray tubecathode ray tube (CRT). (CRT).

Working:Working: a gun fires a beam of a gun fires a beam of electronselectrons inside a large inside a large glass tube. The electrons excite glass tube. The electrons excite phosphor atomsphosphor atoms along along the wide end of the tube (the screen), which causes the the wide end of the tube (the screen), which causes the phosphor atoms to light up.phosphor atoms to light up.

The television image is produced by lighting up different The television image is produced by lighting up different areas of the phosphor coating with different colors at areas of the phosphor coating with different colors at different intensities.different intensities.

Drawbacks Of CRT:Drawbacks Of CRT:

a)a) Produce crisp and vibrant images. Produce crisp and vibrant images. b)b) They are They are bulkybulky. . c)c) To increase the To increase the screen widthscreen width in a CRT set, also have to increase the in a CRT set, also have to increase the

lengthlength of the tube. of the tube.d)d) Problem of loosing originality of color and proportion. Problem of loosing originality of color and proportion.

A new alternative has popped up: the A new alternative has popped up: the Plasma Flat Panel DisplayPlasma Flat Panel Display. .

A A plasma display panel (PDP)plasma display panel (PDP) is a type of flat panel display is a type of flat panel display commonly used for large TV displays (typically above 37-inch commonly used for large TV displays (typically above 37-inch or 940 mm).or 940 mm).

A A plasma display panel (PDP)plasma display panel (PDP) is a display device. Use phenomena is a display device. Use phenomena that visible ray is generated from a fluorescent substance when that visible ray is generated from a fluorescent substance when vacuum ultraviolet ray generated by gas discharge excites the vacuum ultraviolet ray generated by gas discharge excites the fluorescent substance.fluorescent substance.

Plasma display devicesPlasma display devices can be can be divideddivided into an into an AC AC type and atype and a DC DC type in terms of the driving method. type in terms of the driving method.

A A DC PDPDC PDP is designed to operate in a direct current is designed to operate in a direct current discharge state in which electrodes are exposed to a discharge state in which electrodes are exposed to a discharge space (discharge gas).discharge space (discharge gas).

An An AC PDPAC PDP is designed to operate in an alternating is designed to operate in an alternating current discharge state in which electrodes are covered current discharge state in which electrodes are covered with dielectric layers and are not directly exposed to a with dielectric layers and are not directly exposed to a discharge gas.discharge gas.

Advantages Of AC PDP : Advantages Of AC PDP :

a) offer a higher resolution display.a) offer a higher resolution display.

b) implementing larger display sizes.b) implementing larger display sizes.

c) ease of manufacture c) ease of manufacture

HISTORYHISTORY

The The Plasma display panelPlasma display panel was invented by was invented by Donald L. BitzerDonald L. Bitzer and and H. H. Gene SlottowGene Slottow in in 19641964 for the for the PLATO Computer SystemPLATO Computer System at the at the University of IllinoisUniversity of Illinois at at Urbana-ChampaignUrbana-Champaign. .

In the late In the late 1980s1980s as semiconductor memory made as semiconductor memory made CRT CRT displaysdisplays cheapercheaper than than plasma displaysplasma displays..

Plasma'sPlasma's relatively large screen size and thin profile made the relatively large screen size and thin profile made the displays attractive for high-profile placement such as lobbies and displays attractive for high-profile placement such as lobbies and stock exchanges.stock exchanges.

In 1992, In 1992, FujitsuFujitsu introduced the world's first 21-inch (533 mm) introduced the world's first 21-inch (533 mm) full-color display. It was a hybrid, based upon the plasma display full-color display. It was a hybrid, based upon the plasma display achieving superior brightness.achieving superior brightness.

In 1996, Matsushita Electrical Industries (Panasonic) purchased In 1996, Matsushita Electrical Industries (Panasonic) purchased Plasmaco, its color AC technology, and its American factory.Plasmaco, its color AC technology, and its American factory.

Pioneer, 1997, started to sale the first Plasma TV to the public. Pioneer, 1997, started to sale the first Plasma TV to the public. The The largest Plasma displaylargest Plasma display, measured , measured 103"103" and was made by and was made by

Matsushita Electrical Industries (Panasonic),Matsushita Electrical Industries (Panasonic), in the world was shown at in the world was shown at the the CES (Consumer Electronics ShowCES (Consumer Electronics Show) in ) in Las Vegas in 2006.Las Vegas in 2006.

ADVANTAGE OF PDPADVANTAGE OF PDP

Provide Provide high information contenthigh information content and and full colour full colour images. images.

Produce a very wide screen using extremely thin Produce a very wide screen using extremely thin materials. materials.

The image is very bright and looks good from almost The image is very bright and looks good from almost every angle.every angle.

The The high contrast ratioshigh contrast ratios offered make the blacks offered make the blacks blacker and the whites whiter. blacker and the whites whiter.

The image is The image is inherently sharperinherently sharper, , brighterbrighter and and perfect perfect from edge to edge.from edge to edge.

Plasmas are alsoPlasmas are also free free from from magneticmagnetic interference.interference.

INTRODUCTION TO PLASMA TVINTRODUCTION TO PLASMA TV

Plasma TVPlasma TV a kind of a kind of plasma plasma display devicesdisplay devices employing employing the the plasma display panel plasma display panel (PDP).(PDP).

Plasma TV'sPlasma TV's create a picture create a picture from a from a gas (plasma)gas (plasma) filled filled with with xenonxenon and and neonneon atoms atoms and millions of electrically and millions of electrically charged atoms and electrons, charged atoms and electrons, that collide when the power that collide when the power turn on. turn on.

EnergyEnergy from the from the collision releases, increasescollision releases, increases the the energy levelenergy level in the in the plasmaplasma and the and the neonneon and and xenonxenon release release photons of light.photons of light.

They offer They offer excellent picture qualityexcellent picture quality, they are quite expensive , they are quite expensive and are fast becoming the popular choice for and are fast becoming the popular choice for HDTV.HDTV.

The The plasma screenplasma screen is thinner and lighter than a cathode ray is thinner and lighter than a cathode ray tube CRT, which has been used as main display means so far, tube CRT, which has been used as main display means so far, and can be embodied of high definition and wide screen.and can be embodied of high definition and wide screen.

Plasma TVs offer large viewing areas (up to 50 inches) but are Plasma TVs offer large viewing areas (up to 50 inches) but are very thin. While they offer excellent picture quality, they are very thin. While they offer excellent picture quality, they are quite expensive and are fast becoming the popular choice for quite expensive and are fast becoming the popular choice for HDTV.HDTV.

The advantages of a plasma TV is no matter how big is the The advantages of a plasma TV is no matter how big is the image, the size, thickness is only 1/6 of the CRT.image, the size, thickness is only 1/6 of the CRT.

PLASMA TECHNOLOGYPLASMA TECHNOLOGY

Composition Of Plasma DisplayComposition Of Plasma Display

FUNCTIONAL DETAILFUNCTIONAL DETAIL The The xenon xenon and and neonneon gas gas in a in a

plasma television is contained in plasma television is contained in hundreds of thousands of tiny cells hundreds of thousands of tiny cells positioned between two plates of positioned between two plates of glass.glass.

Long electrodesLong electrodes are also are also sandwiched between the sandwiched between the glass glass platesplates, in front of and behind the , in front of and behind the cells.cells.

The address electrodes sit behind The address electrodes sit behind the cells, along the the cells, along the rear glass platerear glass plate..

The The transparent display transparent display electrodeselectrodes, which are surrounded , which are surrounded by an by an insulating dielectric materialinsulating dielectric material and covered by a and covered by a magnesium oxide magnesium oxide protective layerprotective layer, are mounted in , are mounted in front of the cell, along the front glass front of the cell, along the front glass plate.plate.

Control circuitry Control circuitry charges the electrodescharges the electrodes that that cross paths at a cell, creating a cross paths at a cell, creating a voltage voltage differencedifference between front and back and between front and back and causing the causing the gas to ionizegas to ionize and form a and form a plasma; plasma; as the gas ions rush to the as the gas ions rush to the electrodes and collide, electrodes and collide, photons are emitted.photons are emitted.

In a In a monochrome plasma panelmonochrome plasma panel, the , the

ionizing state can be maintained by applying ionizing state can be maintained by applying a a low-level voltagelow-level voltage between all the between all the horizontal and vertical electrodeshorizontal and vertical electrodes

Small amount of Small amount of nitrogennitrogen is is addedadded to the to the neonneon to to increase hysteresis.increase hysteresis.

In In color panelscolor panels, the , the back back of each of each cellcell is is coated with a coated with a phosphorphosphor..

Ultraviolet photonsUltraviolet photons emitted by the plasma emitted by the plasma excite these excite these phosphorsphosphors to give off colored to give off colored light.light.

Every pixel is made up of three Every pixel is made up of three separate subpixel cells, each with separate subpixel cells, each with different colored phosphors.different colored phosphors.

Colors blend together to create the Colors blend together to create the overall color of the pixeloverall color of the pixel..

Varying the pulses of current flowing Varying the pulses of current flowing through the different cells thousands of through the different cells thousands of times per second, the control system times per second, the control system can increase or decrease the intensity can increase or decrease the intensity of each subpixel color to create billions of each subpixel color to create billions of different combinations of red, green of different combinations of red, green and blue.and blue.

Control system can produce most of the Control system can produce most of the visible colors.visible colors.

CONTRAST RATIO CLAIMSCONTRAST RATIO CLAIMS

Contrast ratioContrast ratio is the is the difference difference betweenbetween the the brightest brightest and and darkest darkest parts of an imageparts of an image, measured in , measured in discrete steps, at any given moment.discrete steps, at any given moment.

The The higher the contrast ratiohigher the contrast ratio, , the the more realistic the image is.more realistic the image is.

Contrast ratios for plasma Contrast ratios for plasma displaysdisplays are often advertised as are often advertised as high as high as 20,000:1.20,000:1.

This is a This is a significant advantagesignificant advantage of of plasma over other display plasma over other display technologies.technologies.

Manufacturers follow either the Manufacturers follow either the ANSI ANSI standardstandard or perform a or perform a full-on-full-full-on-full-off testoff test..

The The ANSI standardANSI standard uses a uses a checkered test patterncheckered test pattern whereby the whereby the darkest blacksdarkest blacks and and the lightest whitesthe lightest whites are are simultaneously measuredsimultaneously measured, yielding the most accurate , yielding the most accurate "real-world" ratings"real-world" ratings..

A A full-on-full-off test measuresfull-on-full-off test measures the the ratio ratio using using a pure a pure black screen and a pure white screen.black screen and a pure white screen.

ManufacturersManufacturers can further artificially can further artificially improveimprove the the reported reported contrast ratiocontrast ratio by by increasing the contrastincreasing the contrast and and brightness settingsbrightness settings to achieve the highest test values. to achieve the highest test values.

Plasma is often cited as having better black levels (and Plasma is often cited as having better black levels (and contrast ratios).contrast ratios).

Each Each cellcell on a on a plasma displayplasma display has to be has to be prechargedprecharged before it is due to be illuminated (otherwise the cell would before it is due to be illuminated (otherwise the cell would not respond quickly enough) and this precharging means not respond quickly enough) and this precharging means the cells cannot achieve a true black.the cells cannot achieve a true black.

Running a display at maximum brightness will Running a display at maximum brightness will significantly reduce the panel's lifespansignificantly reduce the panel's lifespan . .

ADVANTAGE OF PLASMA TVADVANTAGE OF PLASMA TV Plasma TVs offer many advantages over other television Plasma TVs offer many advantages over other television

technologies:technologies:1.1. Exceptional ColorExceptional Color: : Plasma TVs display up to 16.77 Plasma TVs display up to 16.77

million colors.million colors.2.2. High ResolutionHigh Resolution: : Plasma TVs are able to display a high Plasma TVs are able to display a high

resolution, and are capable of displaying HDTV signals. resolution, and are capable of displaying HDTV signals. 3.3. Widescreen Aspect RatioWidescreen Aspect Ratio: : Plasma TVs offer a dramatic Plasma TVs offer a dramatic

widescreen 16:9 ratio display.widescreen 16:9 ratio display.4.4. Flat ScreensFlat Screens: : Plasma TVs offer perfectly flat screens, Plasma TVs offer perfectly flat screens,

cutting down on image distortion and glare. cutting down on image distortion and glare. 5.5. Magnetic Field Immunity.Magnetic Field Immunity.6.6. Slim, Lightweight Design.Slim, Lightweight Design.7.7. Uniform Screen Brightness.Uniform Screen Brightness.8.8. Computer compatibility.Computer compatibility.

DISADVANTAGE OF PLASMA TVDISADVANTAGE OF PLASMA TV Of course, not all technologies are perfect, Of course, not all technologies are perfect,

and Plasma TVs do have some disadvantages and Plasma TVs do have some disadvantages compared to other TV technologies:compared to other TV technologies:

1.1. Shorter Life:Shorter Life: Compared to other television Compared to other television technologies, Plasma TVs do generally have a technologies, Plasma TVs do generally have a shorter life span, and there is no option to shorter life span, and there is no option to repair a burnt out tube or backlight.repair a burnt out tube or backlight.

2.2. FragilityFragility:: Plasma TVs are a very fragile Plasma TVs are a very fragile technology, and the units are quite easy to technology, and the units are quite easy to damage.damage.

3.3. Price. Price. 4.4. Not the Lightest or Slimmest. Not the Lightest or Slimmest. 5.5. Lower Brightness.Lower Brightness.6.6. Potential Burn-In.Potential Burn-In.

SIZE OF PLASMA TVSIZE OF PLASMA TV

The majority of plasma TV's and big screen televisions are The majority of plasma TV's and big screen televisions are manufactured in the widescreen manufactured in the widescreen 16:9 aspect ratio16:9 aspect ratio..

Plasma televisions come in a number of different sizes and Plasma televisions come in a number of different sizes and

like all televisions, plasma monitors are like all televisions, plasma monitors are measured measured diagonally across the screen.diagonally across the screen.

Plasma television screens start as small as Plasma television screens start as small as 5 inches5 inches and and increase in size up increase in size up to 63 inches or largerto 63 inches or larger..

The The typical sizestypical sizes are are 24 inches, 32 inches, 40 inches, 50 24 inches, 32 inches, 40 inches, 50 inches and around 60 inchesinches and around 60 inches. The . The most popular plasma most popular plasma television screen sizes are 32 inches and 61 inches. television screen sizes are 32 inches and 61 inches.

The larger plasma television screen, the heavier it will be The larger plasma television screen, the heavier it will be and the harder it will be to mount. and the harder it will be to mount.

Sitting within close proximity of the screen, , say six to Sitting within close proximity of the screen, , say six to ten feet away, then best choice would be a ten feet away, then best choice would be a medium medium sizedsized monitor of monitor of 32 or 36 inches.32 or 36 inches.

The The best picture qualitybest picture quality will come from a will come from a 42 inch 42 inch plasma screen televisionplasma screen television ; at least ten feet away from ; at least ten feet away from the screen.the screen.

For the really big picture and to fully appreciate the For the really big picture and to fully appreciate the quality of a Plasma screen, need to be at least fifteen quality of a Plasma screen, need to be at least fifteen feet back.feet back.

Worlds Largest Plasma TelevisionWorlds Largest Plasma Television

PanasonicPanasonic, one of the , one of the most reputable and top most reputable and top manufacturers of television manufacturers of television sets, announced they will sets, announced they will sell the sell the worlds largest worlds largest plasma televisionplasma television set set available on the market available on the market today. today.

At At one hundred and one hundred and three inchesthree inches, this flat , this flat screen option is currently screen option is currently the largest plasma the largest plasma television available. It has television available. It has a a SRP of $69,999.95.SRP of $69,999.95.

The largest plasma television screen comes The largest plasma television screen comes with with high definition technologyhigh definition technology capability capability which will allow for an even more life like which will allow for an even more life like experience when viewing television. experience when viewing television.

When watching movies or sporting events, When watching movies or sporting events, can feel like we are right there in the action. can feel like we are right there in the action. This is an exciting way to watch television This is an exciting way to watch television and will greatly enhance the experience.and will greatly enhance the experience.

There are other manufacturers that There are other manufacturers that produced large screen plasma television produced large screen plasma television sets. Both sets. Both LG LG and and SamsungSamsung produced a produced a one hundred and two inch screenone hundred and two inch screen but but with Panasonic's one hundred and three, with Panasonic's one hundred and three, they were out classed and Panasonic takes they were out classed and Panasonic takes the prize for the largest plasma television the prize for the largest plasma television screen to date.screen to date.

Where To Buy Plasma TVsWhere To Buy Plasma TVs Generally, the cheapest prices on Plasma TVs can be Generally, the cheapest prices on Plasma TVs can be

found through online retailers.found through online retailers. Few things should be kept in mind:Few things should be kept in mind:1.1. Shipping and other hidden costs: Shipping and other hidden costs: Be careful of great Be careful of great

TV prices that have extraordinarily high shipping and TV prices that have extraordinarily high shipping and handling costs, or other hidden costs like charging a handling costs, or other hidden costs like charging a few hundred dollars for a stand that is included few hundred dollars for a stand that is included standard with the TV.standard with the TV.

2.2. Unauthorized dealers:Unauthorized dealers: Most Plasma TV Most Plasma TV manufacturers have authorized dealers that they sell manufacturers have authorized dealers that they sell through. Some online retailers are not authorized - through. Some online retailers are not authorized - they may have better prices in some cases.they may have better prices in some cases.

3.3. Great prices on auctions sites:Great prices on auctions sites: Be very careful if you Be very careful if you are planning to purchase a TV through an auction site.are planning to purchase a TV through an auction site.

4.4. Prices to good to be truePrices to good to be true..

GREAT COMPETITORGREAT COMPETITOR The great competitor of the Plasma TV The great competitor of the Plasma TV

is LCD TV.is LCD TV. Plasma TV versus LCD TV:Plasma TV versus LCD TV: Both Plasma and LCD TV technologies Both Plasma and LCD TV technologies

are advancing rapidly, and prices have are advancing rapidly, and prices have fallen dramatically since both were fallen dramatically since both were introduced. Both definitely represent two introduced. Both definitely represent two of the best new television technologies of the best new television technologies and generally offer excellent picture and generally offer excellent picture quality. quality.

Following Plasma vs. LCD overview:Following Plasma vs. LCD overview:1.1. Screen size.Screen size.2.2. Cost.Cost.3.3. Picture Quality.Picture Quality.

ANY QUERIES ?ANY QUERIES ?