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A kind of organic light-emitting display device and preparation method thereof

A light-emitting display, organic technology, used in semiconductor/solid-state device manufacturing, electrical components, electrical solid-state devices, etc., can solve the problems of affecting the yield of the screen body, easy to open circuit, etc., to increase current, avoid open circuit, small metal The effect of thin film surface resistance

Active Publication Date: 2018-08-10
BAZHOU YUNGU ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Therefore, what the present invention aims to solve is the problem that the cathode in the existing top-emission organic light-emitting display device is easily disconnected when it is connected to the cathode lead through a through hole, thereby affecting the yield of the screen body, and provides a reliable connection between the cathode and the cathode lead. Organic light-emitting display device and manufacturing method thereof

Method used

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  • A kind of organic light-emitting display device and preparation method thereof
  • A kind of organic light-emitting display device and preparation method thereof

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Embodiment

[0031] The organic light-emitting display device provided in this embodiment, as attached figure 1 As shown, it includes a pixel layer arranged on a substrate 1, the pixel layer includes several organic light emitting diodes arranged in an array (only one organic light emitting diode is shown in the figure for clarity), and the organic light emitting diode includes sequentially The anode layer 2 , the organic layer 3 and the first cathode layer 41 are stacked.

[0032] The organic light-emitting display device also includes a cathode lead 6, and an insulating layer 5 arranged between the first cathode layer 41 and the cathode lead 6, and the insulating layer 5 is provided with a wire for conducting the first cathode layer. 41 and the contact hole 7 for the cathode lead 6.

[0033] The second cathode layer 42 is directly arranged on the non-opening area of ​​the first cathode layer 41, and the projection of the second cathode layer 42 on the plane where the anode layer 2 is lo...

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Abstract

The invention belongs to the field of organic electroluminescence and discloses an organic light-emitting display device. A first cathode layer is manufactured through an open mask, and then a second cathode layer is formed in a non-open area, wherein the second cathode layer is arranged at the bottom of a contact hole and extends along the side wall of the contact hole to the upper portion of an organic layer. In this way, the problem that a thin first cathode layer is prone to disconnection on the edge of a contact hole can be effectively avoided; the contact resistance of the first cathode layer and a cathode lead can be effectively reduced. The current flowing through an OLED is increased, and meanwhile the luminous efficiency of an organic light-emitting display area is not affected because the open area of the first cathode layer is not thickened. A manufacturing method of the organic light-emitting display device is simple in manufacturing technology and capable of being easily applied to large-scale industrial production.

Description

technical field [0001] The invention relates to the field of organic electroluminescence, in particular to an organic light-emitting display device and a preparation method thereof. Background technique [0002] An organic light-emitting display device (English full name is Organic Light-Emitting Device, OLED for short) is an active light-emitting device. Compared with the thin film transistor liquid crystal display (English full name LiquidCrystal Display, referred to as LCD) and plasma display panel (English full name Plasma Display Panel, referred to as PDP) in the existing flat-panel display technology, OLED has high contrast, wide viewing angle, low power consumption, and small size. It is expected to become the mainstream flat panel display technology of the next generation, and it is one of the most concerned technologies in the flat panel display technology at present. [0003] Organic light-emitting display devices can be divided into passive drive organic light-em...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/32H01L51/52H01L51/56
Inventor 刘嵩
Owner BAZHOU YUNGU ELECTRONICS TECH CO LTD
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