TFEL element with tantalum oxide and tungsten oxide insulating l

Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type

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313503, 313506, H01J 170

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active

054040752

ABSTRACT:
A thin film EL element includes a pair of electrodes disposed oppositely each other, a pair of insulator layers disposed between the electrodes, at least one of the insulator layers consisting essentially of tantalum oxide (Ta.sub.2 O.sub.5) and at least one oxide selected from the group consisting of yttrium oxide (Y.sub.2 O.sub.3) and tungsten oxide (WO.sub.3), and a luminous layer held between the insulator layers. The EL element can be operated at high luminance with only a minimum low voltage required for such an operation. Further, the EL element makes long-lived, stable, etc. display devices. Furthermore, the EL element can be produced by a simplified manufacturing process.

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patent: 5225286 (1993-07-01), Fujikawa

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