The phenomenon of electroluminescence (EL) is the non-thermal conversion of electrical energy into luminous energy nexus tube_It’s a gaseous glow tube having set of electrodes each shaped in the form of digit

1. E l e c t r o l umi n e s c e n t
Di s p l a y d e v i c e
The phenomenon of electroluminescence (EL) is the
non-thermal conversion of electrical energy into
luminous energy

2. TFEL Device Structure

3. Circuit model and it’s working

4. ACTIVE-MATRIX EL (AMEL) DISPLAYS

5. COLOR TFEL DISPLAYS

6. Advantages: Increased in
development in the field of
EL device
For example :recently
devices are constructed
without using insulator
layer ,absence of short
circuit
Disadvantages :
Development in the field of
other devices like 3d
viewing devices and flat
panels.

7. C O N C L U S I O N
It turned out that the
performance of the
dielectrics is critical
under high voltage.

8. Nixie tube
It’s a gaseous glow tube having set of electrodes each
shaped in the form of digit .

9. The principle behind the Nixie tube:
The circuitry driving Nixie is simple compared to 7 segment display but
it is bulkier in size than 7 segment display

10. Circuit diagram
Also named as cold cathode glow discharge tube

11. Recent Nixie tubes
Modern Nixie’s consist of 0-9 digits with that
symbols are also used like ‘+’ ‘-‘ .
Recently 15 digit Nixie’s are used to produce
numeric and alpha numeric characters

12. REFERENCES
• M.J. Russ and D.I. Kennedy, "The Effects of Double Insulating Layers on the
• Electroluminescence of Evaporated ZnS:Mn Films," J. Electrochem. Soc., 114, p.
1066, 1967.
• 2. P.M. Alt, "Thin Film EL Devices: Device Characteristics and Performance," Proc.
of the SID,25, No. 2, p. 123, 1984.

13. THANK YOU
BY vedavyas