Multi-color electroluminescent panel
First Claim
1. A multi-color electroluminescent panel comprising first and second electrode means, first and second insulating layers disposed between the first and second electrode means, EL light emitting layer means disposed between the first and second insulating layers and including a first light emitting layer emitting light in one range of the visible spectrum and a second light emitting layer emitting light in a different range of the visible spectrum wherein said first light emitting layer is adjacent to said second light emitting layer, each light emitting layer exhibiting a hysteresis in light emission luminance versus applied voltage characteristic, and bandpass color filter means for passing therethrough light of a particular color emitted from the EL light emittng layer means.
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Abstract
A multi-color electroluminescent panel comprising common electrodes and a plurality of transparent electrodes, an EL light emitting layer disposed between the common and transparent electrodes and capable of exhibiting a hysteresis in light emission luminance versus applied voltage characteristic, and band-pass color filters provided on the EL light emitting layer for passing therethrough light of a particular color emitted from the EL light emitting layer.
21 Citations
13 Claims
- 1. A multi-color electroluminescent panel comprising first and second electrode means, first and second insulating layers disposed between the first and second electrode means, EL light emitting layer means disposed between the first and second insulating layers and including a first light emitting layer emitting light in one range of the visible spectrum and a second light emitting layer emitting light in a different range of the visible spectrum wherein said first light emitting layer is adjacent to said second light emitting layer, each light emitting layer exhibiting a hysteresis in light emission luminance versus applied voltage characteristic, and bandpass color filter means for passing therethrough light of a particular color emitted from the EL light emittng layer means.
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5. A multi-color electroluminescent panel, comprising:
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first and second electrode means; a first and second insulating layer disposed between said first and second electrode means; and a light emitting means disposed between said first and second insulating layer means and including a first light emitting layer for emitting light in a range of the visible spectrum; and
a second light emitting layer adjacent said first light emitting layer for emitting light in a different range of the visible spectrum such that superposition of light emitted by the two adjacent light emitting layers approximates white light, wherein each light emitting layer exhibits a hysteresis in light emission luminance versus applied voltage characteristic. - View Dependent Claims (6, 7, 8, 9)
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10. A method of constructing an electroluminescent panel, comprising:
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providing a glass substrate; depositing a plurality of first electrodes; depositing a first insulating layer; depositing a light emitting layer including a double-layered structure comprised of a first light emitting layer for emitting light in a range of the visible spectrum and a second light emitting layer adjacent said first layer for emitting light in a different range of the visible spectrum such that superposition of light emitted by the two adjacent layers approximates white light; depositing a second insulating layer; depositing a plurality of second electrodes roughly perpendicular to said first electrodes such that intersections of said first and second electrodes from picture elements; and forming a color filter over one of said picture elements so as to reduce the intensity of a range of wavelengths of light transmitted from said picture element. - View Dependent Claims (11, 12, 13)
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Specification