Over the past few years, display technology has evolved considerably. Today, OLED technology is widely seen as a next generation component for flat panel displays, and is expected to become a key technology in the development of flexible displays.

This webpage briefly reviews the advantages of OLED technology, and why Densitron is perfectly positioned to help you maximise the benefits of using it in your products.he past few years, display technology has evolved considerably. Today, OLED technology is widely seen as a next generation component for flat panel displays, and is expected to become a key technology in the development of flexible displays.

What is OLED?

Under the right conditions, some organic substances can be made to emit light. The result is OLED (organic light emitting diode) technology, a technology which offers a range of significant benefits over others. Because, for example, OLED displays do not need a backlight, and operate at a low voltage, they have very low power consumption. OLED displays also offer wider viewing angles, high contrast, excellent resolution, and fast response. Compared with LCD’s, they are also very light.

How it works

The basic structure of OLED is a layer (actually three layers) of organic material sandwiched between a semi-conducting anode and a metal cathode. When a voltage is applied, the recombination of electrons and holes excite electroluminescence in the organic material. The structure of the organic layer and design of the anode and cathode are key factors in the performance of the OLED device.

Passive Matrix OLED (PMOLED)

Offering good visibility from a considerable distance, and a wide viewing angle, PMOLED devices deliver high colour saturation, high contrast and high speed, as well as high power efficiency and low heat generation. They operate well at very low temperatures, and can be made with a profile less than 1.8mm.

• 2.8 – 3.6 V
• Very high contrast ratio
• >160° viewing angle
• <10 μs response time
• –30°C to 70°C operating temperature