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/* Comparison of out coupling of waveguiding light in top-emission polyLED stack */
====Comparison of out coupling of waveguiding light in top-emission polyLED stack====
[[Image:Slide-oled.jpg|thumb|center| 500 px|]]
* Some light is reflected out of the OLED at stray angles in typical cases. By using a barrier material in the cathode layer, this light at stray angles hits the barrier material, and some of it is reflected back and guided out at the right angles, reducing light loss.
[[Image:Slide-oled1.jpg|thumb|center| 500 px|]]
* Microparticles are incorporated in the substrate, which prevents light loss by reflecting light emitted at stray angles.
[[Image:Slide-oled2.jpg|thumb|center| 500 px|]]
* A highly reflective anode is provided made of Aluminium or Silver, with a mirror like finish, to reflect light.
[[Image:Slide-oled3.jpg|thumb|center| 500 px|]]
* A shielding layer is provided below the anode, across its entire surface, thus increasing the surface area from which light can be reflected outside.
[[Image:Slide-oled4.jpg|thumb|center| 500 px|]]
* The reflective layer, anode, is made of a highly reflective surface like Aluminium alloy or silver.
====Conclusion====
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