OLED device making the main steps of OLED devices anti aging treatment

OLED device of organic thin film and metal film immediately with water and air oxidation becomes bad, must take measures to avoid this problem. Can be used inorganic membrane protection, inorganic materials have a silicon nitride film protection, magnesium fluoride, indium oxide, etc. , using resistance heating or magnetron sputtering method inorganic polymer coating material. After the protective film formation, making the devices to packaging, packaging process must be in anhydrous oxygen free of inert gas, encapsulation materials including adhesives and cover material. Adhesive using uv curing or hot curing epoxy firming agent, cover material USES glass block, the block with desiccant inside to adsorption of residual moisture.

the figure below: the damage caused by moisture into the organic layer

3. Device + white light color filter mode

Japan TDK could be the first to develop the technology company, white light color filter device for color. Color filter cost is higher, luminous efficiency is not high, although this model can obtain high purity of color, red, green and blue component aging characteristics of different, can through the change of color purity.

below are three kinds of color scheme:

after encapsulation of OLED devices must characterizing the performance test, mainly luminescence brightness - voltage curve and current density The voltage curve. The steeper the curve, luminous intensity increases with the increasing voltage, current density, voltage rising faster, will the higher luminous efficiency.

- current density Voltage curve

editor: Steve