Electric lamp and discharge devices – With optical device or special ray transmissive envelope – Polarizer or special ray transmission
A light-emitting device includes a substrate, a light-emissive layer disposed over the substrate, and a grating for aligning the light-emissive layer. The grating aligns molecules of the emissive layer, so that the device emits polarised. The grating also reduces wave guiding effects in the device, so increasing the useful light output of the device. The light-emitting device may be an organic light-emitting device (OLED). The grating may align substantially the entire area of the light-emissive layer in a first direction. In this case, substantially the entire emissive area of the device will emit layer of a single polarisation. Alternatively, the grating may align a first region of the light-emissive layer in a first direction and may align a second region of the light-emissive layer in a second direction different from the first direction.
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Verschoor Geraldine Laura Ballantyne
Renner , Otto, Boisselle & Sklar, LLP
Sharp Kabushiki Kaisha
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