PREPARED BY: MACHHI AKSHITA

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. Let’s open these secrets.

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

 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.

 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

 In a plasma TV the individual pixels are made from three tiny containers of an inert gas such as neon or xenon.there are literally hundreds of thousands of these tiny tubes on an average plasma TV screen.  The computer controls the electrical field down to individual pixels,allowing different combinations of Colours to glow, because a plasma TV screen contains quite a few more pixels than a standard television,the image is noticeably sharper.  Fig.pictorial view of a 81cm (diagonal),16.9 aspect ratio plasma screen television

 Plasma TVs have deeper,richer blacks and better contrast ratio.because plasma scrrens are highly reflective glass,plasmas perform best in rooms with some degree of light control.  A plasma TV is a high definition alternative to the standard cathode ray televisions.A plasma TV provides sharp images and vibrant colours,especially when used in conjuction with high definition brodcasts.

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

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