A color-tunable organic electroluminescent device
An electroluminescent device, organic technology, applied in the direction of electric solid devices, electrical components, semiconductor devices, etc., to achieve the effect of reducing leakage current
Active Publication Date: 2017-08-04
BAZHOU YUNGU ELECTRONICS TECH CO LTD
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Problems solved by technology
[0005] For this reason, what the present invention intends to solve is the problem that the existing multi-color stacked OLEDs must be driven by direct current, and then improve a multi-color display electroluminescent device that can be driven by alternating current. By designing an auxiliary PN junction in the device, the Single AC power supply control, without the need for intermediate electrode leads, by adjusting the time distribution ratio of the positive and negative currents of the AC, a complete color toning effect can be achieved
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[0036] In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe in detail the embodiments of the present invention in conjunction with the accompanying drawings.
[0037] This invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of the invention to those skilled in the art, and the present invention will only be defined by the appended claims. In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity. It will be understood that when an element such as a layer, region or substrate is referred to as being "formed on" or "disposed on" another element, it can be directly on the other element or present middle element. In contrast, when an element is referred to as bei...
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A color-tunable organic electroluminescence device according to the present invention comprises a stacked first electrode layer, at least one intermediate transparent conductive layer and a second electrode layer arranged on a substrate, and a layer arranged on the electrode layer and / or Or several light emitting units between the middle transparent conductive layers, the light emitting unit includes at least one first light emitting unit and at least one second light emitting unit, the current that can pass through the first light emitting unit and the current that can pass through the second light emitting unit The current flows in the opposite direction; a one-way current control valve is also arranged between the electrode layers, and the current flow direction that can pass through the one-way current control valve is opposite to the current flow direction that can pass through the light-emitting units arranged on the same layer. That is, by designing an auxiliary PN junction in the device, under the condition of single AC power control and no intermediate electrode lead wire, by adjusting the positive and negative voltage of the AC power and the current time distribution ratio, a complete color toning effect can be achieved.
Description
technical field [0001] The invention relates to the field of organic electroluminescence, in particular to an organic electroluminescence device with adjustable color. Background technique [0002] After nearly 30 years of development, organic electroluminescent devices (English full name Organic Light Emitting Device, referred to as OLED) as the next generation of lighting and display technology, has a wide color gamut, fast response, wide viewing angle, no pollution, high contrast, Advantages such as planarization have been applied to a certain extent in lighting and display. A typical organic electroluminescent device generally includes a transparent substrate 1 , a first transparent electrode 3 , a second electrode 5 , and an organic functional layer 4 disposed between the two electrodes. [0003] CN101371619 B provides a stacked organic light-emitting device, which includes: a first conductive layer, at least one intermediate conductive layer and a second conductive la...
Claims
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IPC IPC(8): H01L51/50H01L51/56
CPCH10K50/131H10K50/18H10K71/00
Inventor 高松刘嵩
Owner BAZHOU YUNGU ELECTRONICS TECH CO LTD