Active solid-state devices (e.g. – transistors – solid-state diode – Organic semiconductor material
Reexamination Certificate
2004-08-10
2010-06-08
Gurley, Lynne A (Department: 2811)
Active solid-state devices (e.g., transistors, solid-state diode
Organic semiconductor material
C349S115000, C257S072000, C257SE33072, C313S504000
Reexamination Certificate
active
07732809
ABSTRACT:
The present invention provides light emitting displays which produce a bright image by efficiently emitting light radiated from a light-emitting thin-film layer to the viewer side, and also produces a high-quality image of high contrast ratio and changing in color to a limited extent over a wide viewing angle range even in a bright atmosphere. The light emitting displays are provided with a plurality of light-emitting devices70, each device70having a light-emitting thin-film layer100and a light reflective surface300in this order on the back side, and a circularly polarized light reflective layer500which separates incident light into two types of circularly polarized components, one being reflected and the other transmitted by the reflective layer, an optical compensation layer800, a quarter-wave plate700and a polarizer600on the front side, wherein the optical compensation layer800is composed of a transparent body working as an optical indicatrix having little refractive index distribution in the in-plane direction and having a refractive index in the thickness direction different from that in the in-plane direction.
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Adachi Masaya
Itou Osamu
Arena Andrew O
Gurley Lynne A
Hitachi Displays Ltd.
Hogan & Hartson LLP
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