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OLED displays must be protected from water and moisture, which can react with
both organic and inorganic active layers degrading performance and display
appearance. In fact, if left unprotected, these displays would last only hours before
being rendered useless. The only way to protect these displays has been to
mechanically sandwich the active OLED materials between sheets of glass, or a
combination of glass sheet and metal can, along with a desiccant to absorb
moisture penetrating the adhesive seal at the edges. These mechanical moisture
barriers are heavy, rigid and add significant cost and complexity; all of which reduce
the intrinsic advantages of OLEDs over LCDs and other display technologies.
The lack of an effective thin-film moisture and oxygen barrier has been the principle
impediment to the commercial development of flexible electronics and displays.
There's no doubt that a flexible substrate and a flexible, transparent barrier film
would reduce weight and thickness by up to 90 percent, be highly robust and offer
new design and market opportunities for both commercial and military applications.
Attempts to produce flexible devices however, have been largely unsuccessful
because moisture and oxygen easily penetrate plastic, limiting usable lifetime and
eventually destroying the device.
Vitex has developed an ideal solution to resolve moisture and oxygen sensitivity
problems in the production of OLED displays and other sensitive electronic devices,
including thin-film solar cells. Specifically, Vitex is applying its proprietary
technology to create a moisture and oxygen barrier that is equivalent to a sheet of
glass. The resulting multi-layer barrier can be applied to flexible plastic film or over
a finished display. Using its proprietary technology, Vitex has developed two barrier
products: Barix™ encapsulation and Barix™ Barrier Film. Vitex has also developed
a tool, the Guardian™ System, for applying Barix™ encapsulation in-line at the end
of the display manufacturing process, replacing conventional glass or metal-can
encapsulation equipment.
Use the links in the upper right to learn more about Barix™.
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