OLED FULL COLOR

Strengths of OLED

Wide Viewing Angle

Because an OLED becomes self-emissive through organic material, its viewing angle is far wider than an LCD. This wide viewing angle can provide great improvements in a wide variety of product applications. It also offers new design concepts to industrial designers who were before limited by the constraints of traditional LCD

Fast Response Time

A slow response time is one of the main problems with existing LCD technology. Applications, which require animation, are limited to a certain extent with traditional LCD. OLED offers 1,000 timers quicker than in response speed which reduces design constraint of displays.

Low Power Consumption

Because backlight is not required for OLED, the power consumption is lower than a LCD module. This can increase the lifetime of batteries for portable products.

Compact size

Since a backlight is not required for OLED, lightweight and extremely thin displays can be applied to many products, opening up a wide range of new design possibilities.

High Brightness & Contrast

OLED offers a drastically higher level of brightness and contrast as compared to LCD.

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The working principle and structure of OLED

The OLED is analogous to that of conventional light-emitting diodes in terms of the working principle. The light emission is through the recombination of electrons and holes from the cathode and anode, respectively. Depending on the device structure, a typical OLED has a hole transport layer (HTL), emitting material layer (EML), and electron transport layer (EML) in between the electrodes. A current injection through the device excites the electrons to higher energy states, and their relaxation to lower states results in light emission with the wavelengths depending on the organic materials and device structure used.

Structure comparision