Organic electroluminescent device, polarizing surface light...

Details Organic electroluminescent device, polarizing surface light... Organic electroluminescent device, polarizing surface light...

2005-09-20

2005-09-20

Chowdhury, Tarifur R. (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Particular illumination

C349S061000

Reexamination Certificate

active

06947105

ABSTRACT:
An organic electroluminescent device containing an organic electroluminescent element (2) and a polarized-light scattering film (1) which comprises a light-transmitting resin (11) and dispersedly contained therein minute regions (12) differing from the light-transmitting resin in birefringent characteristics and in which the difference in refractive index between the minute regions and the light-transmitting resin in the axis direction in which a linearly polarized light has a maximum transmittance, Δn1, is smaller than 0.03 and that in a direction perpendicular to the Δn1direction, Δn2, is from 0.03 to 0.5, the light produced by the organic electroluminescent element being emitted from the device through the polarized-light scattering film. Also disclosed are a polarizing surface light source which comprises the organic electroluminescent device and a liquid-crystal display which comprises the polarizing surface light source and a liquid-crystal cell disposed on the light emission side of the light source.

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