PLASMA TECHNOLOGY

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PLASMA TECHNOLOGY

• By Minh Nguyen

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INTRODUCTION

• For the past many years, the majority of
  televisions have been built using the Cathode Ray
  Tube. Recently, a new alternative, the Plasma
  Display Panel (PDP) have developed. The secret to
  PDP technology lie between the two thin panels of
  mounted glass. Lets open these secrets.

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HISTORY

• 1966 Invented by Donald Bitzer and Gene
  Slottow, University of Illinois
• 1980s Early marketed products limited to
  monochrome
• 1993 Fujitsu marketed first high color plasma
  display

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PLASMA DISPLAY PANEL

• Basic idea
• Illuminates tiny coloured fluorescent lights to
  create an image.
• Allows images much larger than CRTs and most LCDs
  to be constructed
• Three fluorescent lights red, green, blue form a
  full range of colour
• Each pixel is lit individually images are very
  bright and viewable at large angles

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WHAT HAPPENS?
Address electrode causes gas change to plasma
state.
Gas in plasma state reacts with phosphors in
discharge region
Reaction causes each sub-pixel to produce red,
green, and blue light.
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COMPONENTS
Dielectric Layer
Display Electrode
Magnesium Oxide Layer
Rib
Pixel
Phosphors
Address Electrode
Address Protective Electrode
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FUNCTIONS

• Phosphors are vulnerable to damage from a
  positive charge.
• The discharge is control by 2 display electrodes
  to avoid changes implying directly on the
  phosphors.
• Display electrode one scans the frame data, the
  other is controlled by display driver to apply
  high voltage to display the image date.
• Address electrode write the column display data
  into the display cells.

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IMAGE DISPLAY

• Voltage creates electric current
• Xe Ne atoms release ultraviolet photons
• Photons interact with phosphor atoms
• Phosphors electrons jump energy levels
• As electrons drop, visible light photons are
  released
• Varied pulses of current create various colors of
  spectrum

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ADVANTAGES

• IMPACT Plasma displays have more stopping power.
  Easily seen and noticed.
• IMAGE Spectacular image quality.
• FLEXIBILITY Easily changed and updated
• RESULTSMore appealing to watch. Very compelling,
  sexy and dynamic.

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APPLICATIONS

• Home theater
• Network control room
• Meeting room
• Executive offices
• Touch screen
• Corporate lobbies
• Video conferencing

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REFERENCES

• http//www.electronic.howstuffworks.com
• http//www.mechatronics.ece.usu.edu
• http//www.presentationmaster.com
• http//www.agilent.com
• http//www.plasma.org