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OLED display device and manufacturing method thereof

A technology of display device and manufacturing method, which is applied in semiconductor/solid-state device manufacturing, electric solid-state device, semiconductor device and other directions, can solve problems such as damage of organic light-emitting layer, and achieve the effects of low production cost, simple manufacturing process and simple manufacturing process.

Active Publication Date: 2018-01-30
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when forming the PEDOT:PSS film, the solvent of the PEDOT:PSS solution contains water, which can easily damage the organic light-emitting layer. Therefore, when using the PEDOT:PSS film as the transparent electrode of the OLED display device, this problem must first be solved.

Method used

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  • OLED display device and manufacturing method thereof
  • OLED display device and manufacturing method thereof
  • OLED display device and manufacturing method thereof

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Embodiment Construction

[0038] In order to further illustrate the technical means adopted by the present invention and its effects, the following describes in detail in conjunction with preferred embodiments of the present invention and accompanying drawings.

[0039] see figure 1 , is the OLED display device of the present invention, including a substrate 10, a cathode (Cathode) 21 arranged on the substrate 10, an electron injection / transport layer (EIL / ETL) 22 arranged on the cathode 21, and an electron injection / transport layer (EIL / ETL) 22 arranged on the substrate 10. The organic light emitting layer (EL) 23 on the electron injection / transport layer 22, the hole transport layer (HTL) 24 on the organic light emitting layer 23, the hole injection layer on the hole transport layer 24 layer (HIL) 25, and an anode (Anode) 26 disposed on the hole injection layer 25.

[0040] Specifically, the substrate 10 is a TFT array (Array) substrate, and the cathode 21 is a transparent pixel electrode on the TFT...

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Abstract

The invention provides an OLED display device and a manufacturing method thereof. The OLED display device provided by the present invention adopts an inverted device structure and includes a substrate, a cathode, an electron injection / transport layer, a hole transport layer, a hole injection layer, and an anode stacked in sequence from bottom to top, wherein the anode It is a highly conductive PEDOT:PSS transparent conductive film that can be used to form a transparent OLED display device. The hole injection layer is a hydrophobic organic material, and the hole transport layer is an inorganic material with good water and oxygen barrier properties, so that in When making a PEDOT:PSS transparent conductive film as an anode, the hydrophobic hole injection layer can effectively prevent water molecules from penetrating into the organic light-emitting layer, and the hole transport layer with good water and oxygen barrier properties can protect oxygen molecules and water. The secondary barrier of molecules achieves the purpose of double protection of the organic light-emitting layer. The preparation process is simple and the production cost is low, which has great mass production advantages.

Description

technical field [0001] The invention relates to the technical field of photoelectric display, in particular to an OLED display device and a manufacturing method thereof. Background technique [0002] Organic Light Emitting Diodes (OLED) display devices have self-illumination, low driving voltage, high luminous efficiency, short response time, high definition and contrast, nearly 180° viewing angle, wide operating temperature range, and flexible display With many advantages such as large-area full-color display, it is recognized by the industry as a display device with the most development potential. [0003] OLED display devices belong to self-luminous display devices, and generally include pixel electrodes and common electrodes used as anodes and cathodes respectively, and an organic functional layer arranged between the pixel electrodes and the common electrodes, so that when an appropriate voltage is applied to When the anode and cathode are connected, light is emitted f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/50H01L51/52H01L51/56
CPCH10K71/12H10K71/166H10K50/17H10K50/805
Inventor 徐超
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD