21-02-2010, 12:31 PM
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ORGANIC LIGHT EMITTING DIODE (OLED)
OLED is a solid state device composed of thin films of organic molecules that create light with the application of electricity.OLEDs can provide brighter.crisper displays on electronic devices and use less power than conventional light emitting diodes(LEDs)used today.
Like an LED,an OLED is a solid state semiconductor device that is 100 to 500 nanometres thick or about 200 times smaller than a human hair.OLEDs can have either two layers or three layers of organic material. An OLED consist of the following parts:
• Subtrate
• Anode
• Organic layers
• Cathode
OLEDS emit light through a process called electrophosphorescene. Different types of OLEDs are
• Passive-matrix OLED
• Active-matrix OLED
• Transparent OLED
• Foldable OLED
• Top-emitting OLED
• White OLED Applications
Currently.OLEDs are used in small-sreen devices such as cell phones,PDAs and digital cameras.Research and development in the field of OLEDs is proceeding rapidly now and may lead to future applications in heads-up displays,automotive dash boards etc.
INTRODUCTION
Can we just imagine of having a TV which can be rolled up? Would'nt you like to be able to read off the screen of your laptop in direct sunlight? Your mobile phone battery to last much, much longer? Or your next flat screen TVto be less expensive, much flatter, and even flexible? Well, now it is possible by an emerging technology based on the revolutionary discovery that, light emitting, fast switching diode could be made from polymers as well as semiconductors.
We know, ordinary LED emits light when electic current is passed through. Organic displays use a material with self luminous property that eliminates the need of a
back light. These result in a thin and compact display. While backlighting is a crucial component to improving brightness in LCDs, it also adds significant cost as well as requires extra power. With an organic display, your laptop might be less heavy to carry around, or your battery lasts much longer compared to a laptop equipped with a traditional LCD screen.
A screen based on PolyLEDs has obvious advantages: the screen is lightweight and flexible, so that it can be rolled up. With plastic chips you can ensure that the electronics driving the screen are integrated in the screen itself. One big advantage of plastic electronics is that there is virtually no restriction on size.
Like an LED,an OLED is a solid state semiconductor device that is 100 to 500 nanometres thick or about 200 times smaller than a human hair.OLEDs can have either two layers or three layers of organic material. An OLED consist of the following parts:
• Subtrate
• Anode
• Organic layers
• Cathode
OLEDS emit light through a process called electrophosphorescene. Different types of OLEDs are
• Passive-matrix OLED
• Active-matrix OLED
• Transparent OLED
• Foldable OLED
• Top-emitting OLED
• White OLED Applications
Currently.OLEDs are used in small-sreen devices such as cell phones,PDAs and digital cameras.Research and development in the field of OLEDs is proceeding rapidly now and may lead to future applications in heads-up displays,automotive dash boards etc.
INTRODUCTION
Can we just imagine of having a TV which can be rolled up? Would'nt you like to be able to read off the screen of your laptop in direct sunlight? Your mobile phone battery to last much, much longer? Or your next flat screen TVto be less expensive, much flatter, and even flexible? Well, now it is possible by an emerging technology based on the revolutionary discovery that, light emitting, fast switching diode could be made from polymers as well as semiconductors.
We know, ordinary LED emits light when electic current is passed through. Organic displays use a material with self luminous property that eliminates the need of a
back light. These result in a thin and compact display. While backlighting is a crucial component to improving brightness in LCDs, it also adds significant cost as well as requires extra power. With an organic display, your laptop might be less heavy to carry around, or your battery lasts much longer compared to a laptop equipped with a traditional LCD screen.
A screen based on PolyLEDs has obvious advantages: the screen is lightweight and flexible, so that it can be rolled up. With plastic chips you can ensure that the electronics driving the screen are integrated in the screen itself. One big advantage of plastic electronics is that there is virtually no restriction on size.
