Working principle of Screen. Find what are the components of plasma screen: 1: Reflector 2: Polariser 3: Diffuser 4 : Liquid crystal 5: Glassplate

1. PLASMA & TFT
SCREENS
Presented to : Presented by:
Pawan Patidar Sir Pradhan Rishi Sharma
Vaibhav Chourey
K Yashraj

2. PREREQUISITE
● Working principle of CRT.
● Polariser
● Properties of Liquid crystal
(cholesteryl benzoate molecule)

3. LCD WORKING PRINCIPLE

4. TFT

5. ADVANTAGES
● The TFT displays offer a high degree of visual
comfort.
● The life of this type of screen is important and
their low power consumption.
● Another gain of TFT screen is thier compact
size.
● The heat release is very lower than that of
conventional CRT screens, of the same
electromagnetic emissions are reduced and
the visual fatigue decreased.

6. PLASMA

7. ADVANTAGES
● Less expensive per square inch than LCD,
particularly when equivalent performance is
considered.
● Capable of producing deeper blacks allowing for
superior contrast ratio
● Wider viewing angles than those of LCD;
● Less visible motion blur.
● Superior uniformity. LCD panel backlights nearly
always produce uneven brightness levels, although
this is not always noticeable.
● Unaffected by clouding from the polishing process.

8. Comparitive Study

9. NOW YOU KNOW
●Basic working principle of CRT, LCD,TFT &
PLASMA
●Advantages and disadvantages of each display
technology
●Applications of each display technology

10. CONNECTORS FOR
DISPLAYS

11. Thank you!