Color-adjustable organic electroluminescent device
An electroluminescent device, organic technology, applied in the direction of electric solid state devices, electrical components, semiconductor devices, etc.
Active Publication Date: 2015-04-22
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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The invention provides a color-adjustable organic electroluminescent device. The color-adjustable organic electroluminescent device comprises a first electrode layer, at least one middle transparent conductive layer and a second electrode layer which are arranged on a substrate in a stacked mode, and further comprises a plurality of light-emitting units arranged between the electrode layers and / or the middle transparent conductive layer. The light-emitting units include at least one first light-emitting unit and at least one second light-emitting unit. The direction of current capable of passing through the first light-emitting units and the direction of current capable of passing through the second light-emitting units are opposite. A one-way current control valve is arranged between the electrode layers. The direction of current capable of passing through the one-way current control valve and the direction of current capable of passing through the light-emitting units in the same layer as the one-way current control valve are opposite. An auxiliary PN junction is designed in the device, and therefore under the condition that single alternating-current power supply control is achieved and no middle electrode leads are needed, the complete color adjustment effect can be achieved by adjusting the magnitude of alternating-current positive and negative voltage and the current time distribution ratio.
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 , Planarization and other advantages 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] CN101371619B provides a stacked organic light-emitting device, which includes: a first conductive layer, at least one intermediate conductive layer and a second conductive ...
Claims
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Login to View More IPC IPC(8): H01L51/50H01L51/56
CPCH10K50/131H10K50/18H10K71/00
Inventor 高松刘嵩
Owner BAZHOU YUNGU ELECTRONICS TECH CO LTD