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Organic light-emitting device

An electroluminescent device and electroluminescent technology, which are applied in the direction of electro-solid devices, electrical components, semiconductor devices, etc., can solve the problems of limited use and shape, and achieve the effects of reducing dependence, improving short-circuit prevention effect, and simple structure.

Active Publication Date: 2021-03-19
GUAN YEOLIGHT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In order to solve the needs of various lighting in the prior art, realize the design that can start the short-circuit protection mechanism without pixelation and without considering the input current, and improve the problems of design defects, use restrictions, and appearance defects caused by the prior art , to realize the high-stability lighting screen with integrated light-emitting area; for this reason, the present invention provides an organic electroluminescent device

Method used

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  • Organic light-emitting device
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] In this embodiment, the neutron electrode material is metal conductor Al with a thickness of 50nm, the glass transition temperature Tg of the dielectric material layer is 200°C, and the second electrode is Al with a thickness of 3000nm.

[0044] After testing the light-emitting device of Example 1, its parameters are as follows:

[0045] serial number Brightness uniformity of the screen Example 1 80％

[0046] Preferably, the material of the sub-electrode used in the above embodiment is metal conductor Al, and in other embodiments, one of metal conductors such as Ag, Mg and Au may also be used.

[0047] Preferably, the thickness of the sub-electrode used in the above embodiment is 50 nm, and in other embodiments, other values ​​within the thickness range of 1 nm to 50 nm can also be selected.

Embodiment 2

[0049] Such as figure 2 As shown, on the basis of Embodiment 1, the sub-electrode structure also includes outer electrodes, and part of the outer electrodes and sub-electrodes are arranged on the dielectric material layer, and the outer electrodes and sub-electrodes form an electrical sexual connection.

[0050] In this embodiment, the sub-electrode is made of metal conductor Al with a thickness of 50 nm, the glass transition temperature Tg of the dielectric material layer is 200° C., and the second electrode is selected as Al with a thickness of 3000 nm.

[0051] serial number Brightness uniformity of the screen Embodiment 2 (including outer electrode) 90％

[0052] Comparing Example 1 and Example 2, the addition of outer layer electrodes in Example 2 can improve the brightness uniformity of the device.

[0053] Preferably, the glass transition temperature Tg of the dielectric material layer used in the above embodiment is 200° C., and in other embodim...

Embodiment 3

[0055] The difference from Example 2 is that the sub-electrode in Example 3 uses a metal oxide conductor, the specific sub-electrode material is ITO, the thickness is 150nm, the glass transition temperature Tg of the dielectric material layer is 200 ° C, the second electrode is selected It is Al with a thickness of 3000nm.

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Abstract

The invention discloses an organic light-emitting device which sequentially comprises a substrate, a light-emitting component and a second electrode from bottom to top, the light-emitting component and the second electrode are arranged on the substrate, a secondary electrode structure is arranged between the substrate and the light-emitting component, and the secondary electrode structure comprises a sub-electrode and a dielectric material layer; the whole light-emitting area of the light-emitting component is completely contacted with the upper side surface of the sub-electrode, the lower side surface of the dielectric material layer is contacted with the upper side surface of the substrate, and the whole lower side surface of the sub-electrode is completely contacted with the upper sidesurface of the dielectric material layer. According to the high-reliability device, the screen body can be comprehensively prevented from short-circuit failure, the short-circuit prevention effect isalso achieved even under the condition of no grid, dependence on insulating layer materials is reduced, the production process is simplified, and the cost is saved.

Description

technical field [0001] The invention relates to the technical field of organic semiconductor lighting, in particular to an organic electroluminescence device. Background technique [0002] Dust particles, burrs, pinholes, cracks and other defects inevitably exist in the manufacturing process of OLED screens, and the distance between the anode and cathode of OLED screens is usually very small (about tens to hundreds of nanometers). As a result, in this state, the anode and cathode may come into direct contact causing a defect (called a short point), or the organic layer between the anode and cathode may become thinner than other locations. When the OLED device is working, the current tends to pass through this defect point rather than other locations, so that heat accumulates at this defect point, resulting in damage to the quality and reliability of the entire OLED device. [0003] Under other conditions being the same, the larger the light-emitting area of ​​the OLED scree...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/52H01L23/552H01L23/62
CPCH01L23/62H01L23/552H10K50/852H10K50/824Y02E10/549H10K2102/341H10K50/814H10K2102/102H10K2102/103
Inventor 郭立雪朱映光张国辉胡永岚谢静
Owner GUAN YEOLIGHT TECH CO LTD