Light emitting device having a sensor for determining...

Details Light emitting device having a sensor for determining... Light emitting device having a sensor for determining...

2006-05-16

2006-05-16

Wilczewski, Mary (Department: 2822)

Active solid-state devices (e.g., transistors, solid-state diode

Incoherent light emitter structure

Reexamination Certificate

active

07045820

ABSTRACT:
A light emitting device in accordance with the present invention includes a light emitting element and a light sensor for detecting the luminous intensity of the light emitted from the light emitting element. The light emitting element includes a lower electrode, a light emitting material layer including at least a light emitting layer, and an upper electrode having light transparency, which are formed on a substrate in the named order. One of the lower electrode and the upper electrode acts as a cathode, and the other acts as an anode. The light sensor is formed on the light emitting element.Thus, it is possible to provide the light emitting device so configured to sufficiently prevent the unevenness of luminance and the deterioration in color balance, and to efficiently guide the light emitted from the light emitting element to the light sensor, so as to enable to detect the luminous intensity of the emitted light with high sensitiveness, with a minimized adverse mutual influence between the light emitting element and the light sensor.

REFERENCES:
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patent: 5105238 (1992-04-01), Nikaido et al.
patent: 6133581 (2000-10-01), Terao et al.
patent: 6331438 (2001-12-01), Aylott et al.
patent: 2003/0025136 (2003-02-01), Zhang et al.
patent: 59-55487 (1984-03-01), None
patent: 361134084 (1986-06-01), None
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