POLYMER LED

ABSTRACT

Today most of electronics circuits are integrated circuits/semiconductor chips fabricated out of silicon. There are some institutions comes out with plastic circuits that are used as the electronic circuits. This field of electronics is termed as ‘polytronics ’. We think of plastics more as ‘insulators’ rather than electricity conducting materials. But of late, research institutes have come up with innovative ideas to integrate plastics into main stream electronics as it has been established that certain plastics have typical conductive and light emitting properties. The chemical composition of these plastics or conjugated polymers is changed by dopping to make them conducting .examples for such polymers are polythiophenes; oligothiophenes and pentacene have shown conductive properties.

Recent development in polytronics is plastic light emitting diode called ‘POLY LED’. Poly leds are widely used in displays which would replace the currently used cathode ray tube and liquid crystal display screens. The advantages of this display is that it consume less power ,thin, light weight ,allow wider viewing angle, can be read in bright sunlight. Basically PLEDs are emissive displays, i.e. these create light and don’t need a separate back light to provide light for the image