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OLED lighting
Enlighting products the light extraction plate for OLED lighting or Display

<Business target>
Development & Production of high efficiency light extraction plates for eco friendly OLED lighting and OLED TV
<Products>
1. High efficiency light extraction plates for OLED lighting
2. High efficiency light extraction plates for wide area (OLED TV etc)
<Main technology>
1. Product technology for light scattering nanostructure
2. Product technology for high refraction planarization layer
3. Development of related material technology
4. Product technolgy for wide area light extraction plate
<OLED light extraction>
OLED has many important advantages for flat panel displays and lighting. These advantage include a large area lighting, low power, wide viewing angle and fast response. But they have a low out-coupling efficiency of about 20% due to factors such as the total internal reflection, absorption etc.
Nanostructure for more light extraction is located between the transparent electrode of OLED and glass substrate due to the large difference in the refractive index values.

The light efficiency with such internal nanostructure can be improved more than 100%

Without nanostructureWithout nanostructure

With internal nanostructureWith internal nanostructure

Plate of nanostructure
Production of nanostructure plate for light extraction of OLED lighting or TV Display

In processing of nanostructureIn processing of nanostructure

Sample (370 x 470mm<sup>2</sup>)Sample (370 x 470mm2)

SEM image of nanostructureSEM image of nanostructure

Transmittance & hazeTransmittance & haze

· SPECIFICATION
Item SPEC
Size 370 x 470 mm2
Glass Sodalime
Thickness of glass 700 μm
Type of nanostructure Random
Spectral Range 400 ~ 700 nm
Average distance of nanostructure < 1μm
Height of nanostructure 200~600 nm
 
Plate of light extraction
Production of nanostructure plate for high efficiency light extraction of OLED lighting or Display

Refraction index & absorptionRefraction index & absorption

Transmittance in planarizationTransmittance in planarization

EfficiencyEfficiency

· SPECIFICATION
Item SPEC
Size 370 x 470 mm2
Thickness of glass Sodalime 700 μm
Type of nanostructure Random
Material of planarization 1.9 refraction index
Organic & inorganic hybrid
Roughness of surface 3x3 um2 ±3 nm
ITO coating Optional
 
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