Thursday, May 14, 2015

Organic Led Lighting And Their Importance In The Business World

By Tammie Caldwell


They are widely known to be a new technology that produces efficient, thin and bright displays. This article explains lightly on the differences between active and passive matrix technology and their applications. The terms inert matrix diode and active matrix relate to diode display driving method. In case of inert matrix, it is limited in resolution and size though it is cheaper and easy to make when compared to the active Matrix. An active matrix relies on storage capacitors to maintain the row pixels thus enable large resolution and large size displays and an active matrix array. These organic led lighting is very complicated to make though they have no size, resolution restrictions and are very efficient.

An organic diode light bulb, consist of a film of thin material emitting light. The only technology with the ability to create a large area lighting panels and this is opposed to line or point lighting that is enabled by fluorescent bulbs and this diodes.

How these panel is made. To make a diode it involves several sequential steps. That is, take a substrate, clean it, make the back plane by driving circuitry and the switching, pattern the organic layers and depositing and eventually encapsulate the entire thing to prevent oxygen, moisture and dust damage.

The first devices using this technology in the market used inert matrix and were sub displays on cell phones, and the radio decks for automobiles. These displays were usually small and with one or two colors. In 2007 and 2008 is when the Active matrix panels started emerging paving way for larger mobile video player displays, mobile phones and not forgetting digital cameras.

Philips and other companies are the largest users of this technology in their products. The company also produce flexible glass panels and also on the process of producing bendable plastic panels. On the other hand Philips focuses on functional light efficient, bright and uniform panels.

Fluorescent materials are considered to last longer but they are less efficient compared to phosphorescent materials. To date most of the diodes displays are using materials of phosphorescent emitter in nature except in the case of blue color which is fluorescent because the lifetime is not good enough still.

There are several challenges faced by these technology based on industries which are but not limited to the following, Soluble based production processes, Soluble organic led performance, Flexible diode encapsulation, Material life time. That is especially of the blue material. Scaling of the evaporation processes is also a challenge and the system capacity for expansion.

In case of single panels for instance they have achieved parameters of five grams. This parameter is a solution to weight hurdle that is facing the existing sources of light that is bulbs and tubes.

Both of these companies have also produced flexible panels that are used in wearable devices and mobile phones. The volume of production is still low but these companies in the near future are expected to expand and increase production capacity. This way both will come up with new products and thus forming factors to the market.




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