Tampilan plasma: Perbedaan antara revisi
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'''Tampilan plasma''' adalah sebuah [[tampilan layar datar]] emisif di mana cahaya dihasilkan oleh [[phosphor]] yang tereksitasi oleh sebuah pelepasan muatan [[plasma]] antara dua layar datar [[gelas]]. Gas yang dilepas muatannya tidak mengandung [[merkuri]] (berlawanan dengan [[AMLCD]]); sebuah campuran [[gas mulia]] ([[neon]] dan [[xenon]]) digunakan. Campuran gas ini |
'''Tampilan plasma''' adalah sebuah [[tampilan layar datar]] emisif di mana cahaya dihasilkan oleh [[phosphor]] yang tereksitasi oleh sebuah pelepasan muatan [[plasma]] antara dua layar datar [[gelas]]. Gas yang dilepas muatannya tidak mengandung [[merkuri]] (berlawanan dengan [[AMLCD]]); sebuah campuran [[gas mulia]] ([[neon]] dan [[xenon]]) digunakan. Campuran gas ini sulit bereaksi dan sama sekali tidak berbahaya. |
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== Sejarah == |
== Sejarah == |
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Tampilan plasma diciptakan di [[Universitas Illinois]] oleh [[Donald L. Bitzer]] dan [[H. Gene Slottow]] pada 1964 untuk [[ |
Tampilan plasma diciptakan di [[Universitas Illinois]] oleh [[Donald L. Bitzer]] dan [[H. Gene Slottow]] pada 1964 untuk [[PLANO|Sistem Komputer PLANO]]. Panel monochrome orisinal (biasanya [[oranye]] atau [[hijau]]) menikmati penggunaan yang bertambah pada awal 1970-an karena tampilan ini kuat dan tidak membutuhkan sirkuit memori dan penyegaran. Namun diikuti oleh kurangnya penjualan yang dikarenakan perkembangan semikonduktor memori membuat tampilan [[CRT]] sangat murah pada akhir 1970-an. Dimulai dari [[dissertasi]] PhD [[Larry Weber]] dari Universitas Illinois pada 1975 yang berhasil membuat tampilan plasma berwarna, dan akhirnya berhasil mencapai tujuan tersebut pada 1995. Sekarang ini sangat terangnya dan sudut pandang lebar dari panel berwarna plamsa telah menyebabkan tampilan ini kembali mendapatkan kepopulerannya. |
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== Karakteristik umum == |
== Karakteristik umum == |
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Plasma displays are bright (1000 [[lux|lx]] or higher for the module), have a wide color [[gamut]], and can be produced in fairly large sizes, up to 200 cm (80 inches) diagonally. They have a very high "dark-room" contrast, creating the "perfect black", desirable for watching movies. The display panel is only 6 cm (2 1/2 inches) thick, while the total thickness, including electronics, is less than 10 cm (4 inches). Plasma displays use as much [[Electric power|power]] per square meter as a [[Cathode ray tube|CRT]] or a [[AMLCD]] television; in 2004 the cost has come down to US$1900 or less for the popular 42-inch diagonal size, making it very attractive for home-theatre use. However, since the power consumption is proportional to the square of the diagonal size, the larger screen sizes can use considerable |
Plasma displays are bright (1000 [[lux|lx]] or higher for the module), have a wide color [[gamut]], and can be produced in fairly large sizes, up to 200 cm (80 inches) diagonally. They have a very high "dark-room" contrast, creating the "perfect black", desirable for watching movies. The display panel is only 6 cm (2 1/2 inches) thick, while the total thickness, including electronics, is less than 10 cm (4 inches). Plasma displays use as much [[Electric power|power]] per square meter as a [[Cathode ray tube|CRT]] or a [[AMLCD]] television; in 2004 the cost has come down to US$1900 or less for the popular 42-inch diagonal size, making it very attractive for home-theatre use. However, since the power consumption is proportional to the square of the diagonal size, the larger screen sizes can use considerable power—"as much as 700 watts of power, enough to make some critics worry about the environmental consequences if the displays are widely adopted."[http://www2.technologyreview.com/articles/04/11/mann1104.asp?p=2]. The lifetime of the latest generation of PDPs is estimated at 60,000 hours to half life when displaying video. Half life is the point where the picture has degraded to half of its original brightness and intensity, which is considered the end of the functional life of the display. |
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Competing displays include the [[Cathode ray tube]], [[OLED]], [[AMLCD]], [[DLP]], [[SED-tv]] and [[field emission display|field emission]] flat panel displays. The main advantage of plasma display technology is that a very wide screen can be produced using extremely thin materials. Since each pixel is lit individually, the image is very bright and looks good from almost every angle. The image quality is not quite up to the standards of the best cathode ray tube sets (according to some), but it certainly meets most people's expectations. The biggest drawback of this technology has to be the high cost. With prices starting around US$2,000 and going all the way up past US$20,000 ([[as of 2004]]), these sets do not sell as quickly as older technologies like CRT. But as prices fall and technology advances, they may start to seriously compete against the CRT sets. |
Competing displays include the [[Cathode ray tube]], [[OLED]], [[AMLCD]], [[DLP]], [[SED-tv]] and [[field emission display|field emission]] flat panel displays. The main advantage of plasma display technology is that a very wide screen can be produced using extremely thin materials. Since each pixel is lit individually, the image is very bright and looks good from almost every angle. The image quality is not quite up to the standards of the best cathode ray tube sets (according to some), but it certainly meets most people's expectations. The biggest drawback of this technology has to be the high cost. With prices starting around US$2,000 and going all the way up past US$20,000 ([[as of 2004]]), these sets do not sell as quickly as older technologies like CRT. But as prices fall and technology advances, they may start to seriously compete against the CRT sets. |
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==Functional details== |
==Functional details== |
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The xenon and neon gas in a plasma television is contained in hundreds of thousands of tiny cells positioned between two plates of glass. Long [[electrodes]] are also sandwiched between the glass plates, on both sides of the cells. The address electrodes sit behind the cells, along the rear glass plate. The transparent display electrodes, which are surrounded by an insulating dielectric material and covered by a magnesium oxide protective layer, are mounted above the cell, along the front glass plate. |
The xenon and neon gas in a plasma television is contained in hundreds of thousands of tiny cells positioned between two plates of glass. Long [[electrodes]] are also sandwiched between the glass plates, on both sides of the cells. The address electrodes sit behind the cells, along the rear glass plate. The transparent display electrodes, which are surrounded by an insulating dielectric material and covered by a magnesium oxide protective layer, are mounted above the cell, along the front glass plate. |
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In a monochome plasma panel, control circuitry charges the electrodes that cross paths at a cell, causing the plasma to [[ion]]ize and emit photons between the electrodes. The ionizing state can be maintained by applying a low-level voltage between all the horizontal and vertical electrodes - even after the ionizing voltage is removed. To erase a cell all voltage is removed from a pair of electrodes. This type of panel has inherent memory and does not use phosphors. A small amount of nitrogen is added to the neon to increase [[hysteresis]]. |
In a monochome plasma panel, control circuitry charges the electrodes that cross paths at a cell, causing the plasma to [[ion]]ize and emit photons between the electrodes. The ionizing state can be maintained by applying a low-level voltage between all the horizontal and vertical electrodes - even after the ionizing voltage is removed. To erase a cell all voltage is removed from a pair of electrodes. This type of panel has inherent memory and does not use phosphors. A small amount of nitrogen is added to the neon to increase [[hysteresis]]. |
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To ionize the gas in a color panel, the plasma display's computer charges the electrodes that intersect at that cell thousands of times in a small fraction of a second, charging each cell in turn. When the intersecting electrodes are charged (with a voltage difference between them), an electric current flows through the gas in the cell. The current creates a rapid flow of charged particles, which stimulates the gas [[atom]]s to release [[ultraviolet]] photons. |
To ionize the gas in a color panel, the plasma display's computer charges the electrodes that intersect at that cell thousands of times in a small fraction of a second, charging each cell in turn. When the intersecting electrodes are charged (with a voltage difference between them), an electric current flows through the gas in the cell. The current creates a rapid flow of charged particles, which stimulates the gas [[atom]]s to release [[ultraviolet]] photons. |
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The phosphors in a plasma display give off colored light when they are excited. Every [[pixel]] is made up of three separate subpixel cells, each with different colored phosphors. One subpixel has a red light phosphor, one subpixel has a green light phosphor and one subpixel has a blue light phosphor. These colors blend together to create the overall color of the pixel. By varying the pulses of current flowing through the different cells, the control system can increase or decrease the intensity of each subpixel color to create hundreds of different combinations of red, green and blue. In this way, the control system can produce colors across the entire [[visible spectrum]]. Plasma displays use the same phosphors as CRTs, accounting for the extremely accurate color reproduction. |
The phosphors in a plasma display give off colored light when they are excited. Every [[pixel]] is made up of three separate subpixel cells, each with different colored phosphors. One subpixel has a red light phosphor, one subpixel has a green light phosphor and one subpixel has a blue light phosphor. These colors blend together to create the overall color of the pixel. By varying the pulses of current flowing through the different cells, the control system can increase or decrease the intensity of each subpixel color to create hundreds of different combinations of red, green and blue. In this way, the control system can produce colors across the entire [[visible spectrum]]. Plasma displays use the same phosphors as CRTs, accounting for the extremely accurate color reproduction. |
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== Lihat |
== Lihat pula == |
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* [[Perbandingan teknologi tampilan]] |
* [[Perbandingan teknologi tampilan]] |
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== Pranala luar == |
== Pranala luar == |
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*{{en}} [http://www.plasma-vs-lcd.com Plasma vs. LCD - Comparison of Plasma TVs and LCD TVs] |
* {{en}} [http://www.plasma-vs-lcd.com Plasma vs. LCD - Comparison of Plasma TVs and LCD TVs] {{Webarchive|url=https://web.archive.org/web/20200809001714/https://www.plasma-vs-lcd.com/ |date=2020-08-09 }} |
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*{{en}}[http://www.ece.uiuc.edu/alumni/w02-03/plasma_history.html Plasma Display History at the University of Illinois] |
* {{en}}[http://www.ece.uiuc.edu/alumni/w02-03/plasma_history.html Plasma Display History at the University of Illinois] {{Webarchive|url=https://web.archive.org/web/20051001030137/http://www.ece.uiuc.edu/alumni/w02-03/plasma_history.html |date=2005-10-01 }} |
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*{{en}} [http://www.theprojectorpros.com/learn.php?s=learn&p=plasma_pros_and_cons Plasma Displays] How do Plasma Displays Work? What are the Pros and Cons? (theprojectorpros.com) |
* {{en}} [http://www.theprojectorpros.com/learn.php?s=learn&p=plasma_pros_and_cons Plasma Displays] {{Webarchive|url=https://web.archive.org/web/20051018045649/http://www.theprojectorpros.com/learn.php?s=learn&p=plasma_pros_and_cons |date=2005-10-18 }} How do Plasma Displays Work? What are the Pros and Cons? (theprojectorpros.com) |
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[[Kategori:Teknologi tampilan]] |
[[Kategori:Teknologi tampilan]] |
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[[Kategori:Tampilan]] |
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[[ar:شاشة بلازما]] |
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{{Plasma-stub}} |
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[[ca:Pantalla de plasma]] |
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{{Tv-stub}} |
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[[de:Plasmabildschirm]] |
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[[en:Plasma display]] |
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[[es:Pantalla de plasma]] |
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[[fi:Plasmapaneelinäyttö]] |
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[[fr:Écran à plasma]] |
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[[he:תצוגת פלזמה]] |
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[[it:Schermo al plasma]] |
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[[ja:プラズマディスプレイ]] |
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[[ko:플라스마 디스플레이]] |
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[[lv:Plazmas displejs]] |
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[[nl:Plasmascherm]] |
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[[no:Plasmaskjerm]] |
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[[pl:Wyświetlacz plazmowy]] |
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[[pt:Displays de plasma]] |
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[[ru:Плазменная панель]] |
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[[sv:Plasmaskärm]] |
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[[zh:等離子顯示屏]] |
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Revisi terkini sejak 2 September 2023 15.10
Tampilan plasma adalah sebuah tampilan layar datar emisif di mana cahaya dihasilkan oleh phosphor yang tereksitasi oleh sebuah pelepasan muatan plasma antara dua layar datar gelas. Gas yang dilepas muatannya tidak mengandung merkuri (berlawanan dengan AMLCD); sebuah campuran gas mulia (neon dan xenon) digunakan. Campuran gas ini sulit bereaksi dan sama sekali tidak berbahaya.
Sejarah
[sunting | sunting sumber]Tampilan plasma diciptakan di Universitas Illinois oleh Donald L. Bitzer dan H. Gene Slottow pada 1964 untuk Sistem Komputer PLANO. Panel monochrome orisinal (biasanya oranye atau hijau) menikmati penggunaan yang bertambah pada awal 1970-an karena tampilan ini kuat dan tidak membutuhkan sirkuit memori dan penyegaran. Namun diikuti oleh kurangnya penjualan yang dikarenakan perkembangan semikonduktor memori membuat tampilan CRT sangat murah pada akhir 1970-an. Dimulai dari dissertasi PhD Larry Weber dari Universitas Illinois pada 1975 yang berhasil membuat tampilan plasma berwarna, dan akhirnya berhasil mencapai tujuan tersebut pada 1995. Sekarang ini sangat terangnya dan sudut pandang lebar dari panel berwarna plamsa telah menyebabkan tampilan ini kembali mendapatkan kepopulerannya.
Lihat pula
[sunting | sunting sumber]Pranala luar
[sunting | sunting sumber]- (Inggris) Plasma vs. LCD - Comparison of Plasma TVs and LCD TVs Diarsipkan 2020-08-09 di Wayback Machine.
- (Inggris)Plasma Display History at the University of Illinois Diarsipkan 2005-10-01 di Wayback Machine.
- (Inggris) Plasma Displays Diarsipkan 2005-10-18 di Wayback Machine. How do Plasma Displays Work? What are the Pros and Cons? (theprojectorpros.com)
| Umum | |
|---|---|
| Perpustakaan nasional | |
 | Artikel bertopik fisika plasma ini adalah sebuah rintisan. Anda dapat membantu Wikipedia dengan mengembangkannya. |
 | Artikel bertopik televisi, stasiun televisi, atau acara televisi ini adalah sebuah rintisan. Anda dapat membantu Wikipedia dengan mengembangkannya. |