Multicolor luminescent device
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United States of America Patent
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Feb 9, 1999
Grant Date -
N/A
app pub date -
May 15, 1997
filing date -
Feb 4, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A multicolor luminescent device comprising a color conversion material in which a plurality of shielding layers and a plurality of different color conversion layers are separately and repeatedly assembled on the same flat, alternating with each other, and an organic EL emitting material including a plurality of organic EL elements separately assembled on the same flat at each position corresponding to the plurality of color conversion layers, the color conversion material and the organic EL emitting material being disposed so as to sandwich a transmittable medium between them, characterized in that the distance (d.sub.1) between the color conversion material and the organic EL emitting material and the width (d.sub.2) of the shielding layer satisfy the equation, d.sub.2 .gtoreq.d.sub.1. This multicolor luminescent device has excellent characteristics in the angle of view, is capable of inhibiting the occurrence of color drift, and has excellent visibility and practical use
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