Variable wavelength luminescent device and control method theref

Details Variable wavelength luminescent device and control method theref Variable wavelength luminescent device and control method theref

1994-11-09

1996-09-24

Kriess, Kevin A.

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

372 7, 372 99, H01J 170

Patent

active

055594000

ABSTRACT:
A resonance type variable wavelength luminescent device which can control a spectrum of emission light of luminescent elements in response to an input signal such as voltage, heat, pressure, sound wave, magnetic field, electric field, gravity, electromagnetic wave or the like. Sequentially formed as laminated on a glass substrate are a semi-transparent reflective film, first electrically conductive transparent electrode films, a variable optical length layer, second electrically conductive transparent electrode films, a hole injection layer, an active layer made of aluminum chelate or the like and metallic electrodes, so that the first and second electrically conductive transparent electrode films are mutually arranged in a matrix form. A voltage is applied between the second electrically conductive transparent electrode films and the metallic electrodes to cause light emission of the active layer, whereas a voltage is applied between the first and second electrically conductive transparent electrode films to control the optical length of the variable optical length layer and to control a spectrum of emission light of the device. The variable wavelength luminescent device can be applied to planar color displays, optical switches and various sorts of sensors.

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