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Plasma display pannel


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created by : Sudipta mondal

faculty of BCET

Published in: Education
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Plasma display pannel

  1. 1. f<br />PLASMA DISPLAY PANELS (PDP)<br />
  2. 2. Display types<br />
  3. 3. What is Plasma?<br />Plasma is often called the "Fourth State of Matter", the other three being solid, liquid and gas. A plasma is a distinct state of matter containing a significant number of electrically charged particles, a number sufficient to affect its electrical properties and behavior. In addition to being important in many aspects of our daily lives, plasmas are estimated to constitute more than 99 percent of the visible universe.<br />
  4. 4. Plasma display panels:<br />PLASMA display panels (PDPs) are one of the leading candidates in the competition for :<br /><ul><li> large-size, high-brightness ,flat panel displays
  5. 5. suitable for high-definition television (HDTV) monitors</li></ul>Their advantages are:<br /><ul><li>Fast response
  6. 6. Wide viewing angle
  7. 7. Low weight
  8. 8. Simple manufacturing process
  9. 9. High resolution</li></li></ul><li>WORKING PRINCIPLE OF PLASMA DISPLAY PANELS:<br />Typical plasma displays consist of two glass plates, each with parallel electrodes deposited on their surfaces. The electrodes are covered with a dielectric film. The plates are sealed together with their electrodes at right angles, and the gap between the plates is filled with an inert gas mixture. A protective MgO layer is deposited above the dielectric film. The role of this layer is to decrease the breakdown voltage caused by the high secondary electron emission coefficient of MgO.<br />
  10. 10. The discharge is initiated<br />by applying a voltage pulse to the electrodes. Xenon gas mixtures are used to efficiently generate UV photons. The UV photons<br />emitted by the discharge hit the phosphors deposited on<br />the walls of the PDP cell and are converted into visible photons. Each cell contains phosphor that emits one primary color—red,<br />green, or blue.<br />
  11. 11. Applications of plasma display panels:<br />
  12. 12. Various applications of Plasmas:<br />Processing:<br />• Surface Processing<br />• Non equilibrium (low pressure)<br />• Thermal (high pressure)<br /> <br />Volume Processing:<br />• Flue gas treatment<br />• Metal recovery<br />• Waste treatment<br /> <br />Chemical Synthesis:<br />• Plasma spraying<br />• Diamond film deposition<br />• Ceramic powders<br /> <br />Light Sources:<br />• High intensity discharge lamps<br />• Low pressure lamps<br />• Specialty sources<br /> <br />Surface Treatment:<br />• Ion implantation<br />• Hardening<br />• Welding <br />• Cutting<br />• Drilling<br /> <br />Propulsion<br />
  13. 13. Various applications of Plasmas:<br /> <br /> <br />Flat-Panel Displays:<br />• Field-emitter arrays<br />• Plasma displays<br /> <br />Radiation Processing:<br />• Water purification<br />• Plant growth<br /> <br />Switches:<br />• Electric power <br />• Pulsed power<br /> <br />Energy Converters:<br />• MHD converters<br />• Thermionic energy converters<br />Medicine:<br />• Surface treatment<br />• Instrument sterilization<br /> <br />Isotope Separation<br /> <br />Beam Sources<br /> <br />Lasers<br /> <br />Material Analysis<br />
  14. 14. Differences between plasma display panels and LCD<br />
  15. 15. 1. Screen Size and Price<br />2. Color Accuracy and<br /> Saturation<br />CR= Luminance of brightest white/Luminance of darkest black<br />3. Picture Resolution<br />4. Contrast Ratio<br />5. Burn-In<br />6. Pixel Response Time and Screen Refresh Rate<br />7. Power Consumption<br />8. Viewing Angle<br />9. Weight <br />10. Performance at High Altitude<br />