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US 7,402,939 B2Granted
Organic EL display
AssigneeToshiba Matsushita Display Technology Co., Ltd.
InventorsHirofumi Kubota, Satoshi Okutani, Tsuyoshi Uemura
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Abstract
An organic EL display includes an insulating layer with light-transmission property, an organic EL element located on a back side of the insulating layer, a diffraction grating located on the back side of the insulating layer, and an optical film disposed on a front side of the insulating layer and including optically isotropic first portions and optically anisotropic second portions, the first and second portions forming boundaries inclined with respect to a main surface of the optical film.
Claims16
An organic EL display comprising:
- an insulating layer with light-transmission property;
- an organic EL element disposed on a back side of the insulating layer;
- a diffraction grating disposed on the back side of the insulating layer;
- and
- an optical film disposed on a front side of the insulating layer and comprising optically isotropic first portions and optically anisotropic second portions, the first and second portions forming boundaries inclined with respect to a main surface of the optical film.
2 more elements
An organic EL display comprising:
- an insulating layer with light-transmission property;
- an organic EL element disposed on a back side of the insulating layer;
- a diffraction grating disposed on the back side of the insulating layer;
- and
- an optical film disposed on a front side of the insulating layer and comprising optically isotropic first portions and optically anisotropic second portions, the first and second portions forming a stripe pattern inclined with respect to a main surface of the optical film when a cross section of the optical film perpendicular to the main surface is observed.
2 more elements
Dependencies are inferred from the claim text.