A wavelength-tunable electroluminescent device

A technology of electroluminescent devices and light-emitting devices, which is applied in the direction of electric solid-state devices, electrical components, semiconductor devices, etc., can solve the problem that the emission wavelength can no longer be changed, and achieve the effect of high color rendering index, simple process and few processes
CN107946473BInactive Publication Date: 2020-11-06CHINA JILIANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA JILIANG UNIV
Publication Date
2020-11-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

An electroluminescent device whose wavelength can be modulated is characterized in that it includes a voltage modulation unit A1 composed of M1, I1, S1, and M2 and an electroluminescent device A2. The terminal voltage realizes the adjustment of the emission wavelength of the electroluminescent device A2. The present invention adjusts the reflection phase shift of the unit by adjusting the voltage across the voltage modulation unit A1, and the change of the reflection phase shift leads to the change of the emission wavelength of the electroluminescent device A2, thereby realizing the modulation of the emission wavelength of the light emitting device. The invention only needs to adjust the voltage at both ends of the modulator layer to realize the modulation of the emission spectrum of the light-emitting device, and achieve the purpose of modulating the emission wavelength of the light-emitting device under a fixed structure, and the structure is simple and the modulation speed is fast, which is beneficial to the integration of display devices and high speed optical modulator applications.
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Description

technical field

[0001] The invention belongs to the field of electroluminescence, and in particular relates to an organic electroluminescence device and an LED device with a microcavity effect.

[0002] technical background

[0003] Organic electroluminescent display (OLED) technology is recognized in the industry as the most likely to replace the new generation of liquid crystal display technology, and traditional cathode ray display (CRT), liquid crystal display (LCD), plasma display (PDP) and inorganic semiconductor ( Compared with LED) display, it has many advantages: (1) The process is relatively simple, less raw materials are used, and the cost is lower, and large-area, flexible displays can be prepared by inkjet printing and other methods; (2) It has low-voltage drive (less than 10V) and With low power consumption and light weight, it is easy to be applied to portable display terminals; organic electroluminescent devices have attracted more and more attention from acad...

Claims

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