Imagine if you could treat your phone like a piece of paper.
Rolled, dropped, tucked into a backpack, or trampled but still not broken. How
is it possible? How can a cell phone screen be twirled up like a Fruit Roll Up
and then folded in the middle up to become a video conferencing stand?
Wait until 2013. You will see the gadgets that are not only
smart but also flexible. Gadgets brings new technology, namely Organic Lights
Emitting Diode (OLED). -OLED is a semiconductor that emits light flexible
technology. Previous technologies have been applied to the lighting. OLED
lighting panels are made of a thin film of material that emit bright light
desirable. OLEDs can be color-tunable, flexible or even transparent. OLED
technology provides for higher efficiency than today's standard lighting. With
no mercury and low power consumption OLED is the next evolution in lighting for
a greener planet.
Prototype has been there and attract a lot of attention in a
variety of technology equipment exhibition. Next year we have seen the launch
of mobile phone that can be bent for the first time. Various companies,
including LG, Philips, Sharp, Sony and Nokia, are developing the technology.
Samsung will be the first company to make it happen. Samsung will be the first
company to make it happen.
The screen will be "folded, rolled and more, and
enables high durability through the use of plastic coating that is thinner,
lighter and more flexible than conventional LCD technology ...," said a
spokesman for Samsung.
But there are many other technologies that can make your
smart phone can be bent or curved. However, the concept of creating a flexible
and assemble electronics on flexible plastic that also has been discussed since
the 1960s. And in 2005, Philips demonstrated the first prototype of the display
that can be rolled.
OLED TECHNOLOGY
OLED technology is an important tool in elektroluminensi.
These technologies have the basic concept of the light beam generated by the
device due to the applied electric field. OLED technology was developed to
obtain a broad view, flexible, inexpensive and can be used as an efficient
screen display for different purposes.
Number of colors of light emitted by the OLED devices evolve
from one color to multi-color. This phenomenon is obtained by varying the
voltage that is supplied to the OLED device so that the device has the prospect
of becoming an alternative devices such as flat-screen display technology based
on liquid crystals.
OLED structure consists of layers made of glass-indium tin
oxide that serves as the positive electrode or anode, organic layers of
aromatic diamine with a thickness of 750 nm, the light emitting layer made of
metal complex compounds such as 8-hydroxyquinoline aluminum, and a negative
electrode layer or cathodes made from an alloy of magnesium and silver by
atomic ratio 10:1. Construction of the entire layer is not more than 500 nm,
meaning same thin OLED with a sheet of paper.
An important part of the OLED device is an electrode layer
and a thin layer consisting of organic molecules as light-emitting both of
which are arranged overlapping. The organic layer can be deposited with a
relatively simple technique that plays coating (spin coating) while the
electrode layer is deposited using evaporation techniques (evaporation).
Electrode layers made of metal or semi-transparent transparent as Indium Tin
Oxide (ITO) or aluminum (Al). Properties of transparent allowing light from an
optimal exit device structure.
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