ABHISHEK2307222

OLED applications

NOKIA’s see through handset

HP’s Transparent PC

PSP using foldable OLED display

Toshiba laptop having transparent OLED display

Organic Light Emitting Diode Structure

The Top Layer is the Cathode layer made of tungsten releases electrons when current is run through it.

Emissive Layer removes electrons from the cathode layer to make light.

Conductive layer is made from a type of organic plastic that removes the electron holes

Then the Anode Layer that consist of removing and adding electron holes while the current is running through it and is made from graphite particles

Followed by the Substrate layer is used to support the Organic LED and is made up of glass, clear plastic

TYPES OF OLED’S

Passive-matrix OLED – AMOLED

Consist of strips of cathode and anode

The point of intersection of cathode and anode form one pixel

Polymer is also in pieces

Suitable for large displays

Active-matrix OLED - AMOLED

Consist of TFT beneath the anode that controls the pixel display

The best uses for AMOLEDs are computer and TV monitors

ADDRESSING OF DISPLAY (Active matrix)

Place transistor at each pixel

Selected pixel will be on until transistor is refreshed

Any number of lines can be present

Passive Matrix Addressing

Line by line scanning is done

The pixel to be illuminated will be given input current and similarly the other end is taken at ground potential

Transparent OLED

Transparent OLEDs have only transparent components

.A transparent OLED display can be either active- or passive-matrix

Foldable OLED

All the components are flexible materials

Used in devices such as cell phones

ADVANTAGES

1. Low power consumption than CRT and LCD.

2. Self luminous.

3. No viewing angle dependence like LCD.

4. Only flexible display technology today.

5. Easier to produce than LCD and CRT.

6. Can be as slim as paper.

7. Can be scaled to large dimensions easily.

DISADVANTAGES

1. The development of the technology is

restrained by patents held by Kodak and other

companies. For commercial development of

OLED technology it is often necessary to

acquire a license.

2. Water can easily damage OLEDs.

3. have only a lifetime of around 5,000 hours

THANK YOU