High-contrast organic light-emitting device (OLED) with band-pass filter film and top-emitted green ray

A band-pass filtering, high-contrast technology, applied in electric solid devices, electrical components, semiconductor devices, etc., can solve the problems of process limit cost and yield, and achieve complex device preparation process, low efficiency loss and high efficiency. Effect

Inactive Publication Date: 2013-03-13
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the complexity of the process (optical calculations, growth of high-temperature materials, etc.) limits cost and yield

Method used

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  • High-contrast organic light-emitting device (OLED) with band-pass filter film and top-emitted green ray
  • High-contrast organic light-emitting device (OLED) with band-pass filter film and top-emitted green ray
  • High-contrast organic light-emitting device (OLED) with band-pass filter film and top-emitted green ray

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Embodiment 1

[0025] Prepared structure as Si / SiO 2 / Al / m-MTDATA:MoO 3 / m-MTDATA / Ir(ppz) 3 / CBP: Ir(ppy) 3 / BPhen / LiF / Al / Ag / band-pass filter film top-emitting green organic electroluminescent device, the device is prepared in a multi-source organic molecule vapor deposition system, and the detailed preparation process is as follows:

[0026] [1] The silicon substrate covered with silicon dioxide with a thickness of 340 nm was scrubbed repeatedly with acetone and ethanol cotton balls in sequence, then ultrasonicated with acetone, ethanol, and deionized water in sequence, and then dried.

[0027][2] Place the treated substrate in the metal evaporation system. The vacuum chamber of the system contains 4 metal evaporation sources and every two evaporation sources share a set of control systems, which can simultaneously carry out the deposition of two metal materials. Evaporation, in order to ensure the uniformity of evaporation and facilitate the evaporation of metal materials, the substrate...

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Abstract

The invention belongs to the field of organic light-emitting devices (OLED), in particular relates to a high-contrast organic light-emitting device (OLED) with a band-pass filter film and top-emitted green ray. The OLED comprises a substrate, a metal anode, an organic function layer, a metal cathode and the band-pass filter film, wherein the organic function layer sequentially comprises a hole injection layer, a hole transmission layer, an electronic barrier layer, a green ray emission layer, an electronic transmission layer and an electronic injection layer. The filter film introduced can weaken the influence of ambient light to the contrast of display devices, thereby realizing the high-contrast OLED. The high-contrast OLED overcomes the defects that for purpose of realizing high contrast, the original top emission device is complicated in structure and has large process difficulty, and almost has no influence on the efficiency of the device while the contrast is improved. The top emission OLED produced has the advantages of being high in contrast, low in efficiency loss, simple in process and low in cost.

Description

technical field [0001] The invention belongs to the field of organic electroluminescence, in particular to a high-contrast top-emitting green light organic electroluminescence device with a band-pass filter film. Background technique [0002] The traditional organic electroluminescent device (OLED) is a bottom-emitting device that grows on a glass substrate and uses ITO as an anode to emit light from one side of the substrate. However, when the device is used to actively drive the organic electroluminescent display, the pixel drive circuit of the display device and the display light-emitting area compete with each other, which directly affects the aperture ratio of the display device. For the top-emitting organic electroluminescent device (TEOLED, the light is emitted from the side of the top electrode, and the pixel drive circuit can be fabricated under the organic light-emitting device, which solves the problem of competition between the device pixel drive circuit and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/52
Inventor 赵毅岳守振张振松刘式墉
Owner JILIN UNIV
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