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Active type OLED (organic light-emitting diode) display device and manufacturing method thereof

A display device, active technology, applied in semiconductor/solid-state device manufacturing, electric solid-state devices, semiconductor devices, etc., can solve the problems of low contact resistance of cathode and cathode power supply lines, light output rate and process are not easy to achieve, etc. The effect of extraction rate, reduction of contact resistance, and simple preparation process

Inactive Publication Date: 2013-08-14
KUNSHAN NEW FLAT PANEL DISPLAY TECH CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] For this reason, what the present invention is to solve is the problem that the method for reducing the contact resistance of the cathode and the cathode power supply line in the top-emitting OLED affects the light output rate and the problem that the process is complicated and difficult to realize, and provides an active OLED display with a low contact resistance between the cathode and the cathode power supply line Devices and methods of making them

Method used

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  • Active type OLED (organic light-emitting diode) display device and manufacturing method thereof
  • Active type OLED (organic light-emitting diode) display device and manufacturing method thereof
  • Active type OLED (organic light-emitting diode) display device and manufacturing method thereof

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Embodiment 1

[0036] The active OLED display device provided by this embodiment, as attached figure 1 As shown, an OLED pixel unit is included, wherein the OLED pixel unit includes at least two TFTs 102, an anode 105 disposed on the TFT 102, a cathode 107 disposed opposite to the anode 105, and an organic functional layer 106 disposed between the anode 105 and the cathode 107, The active OLED display device also includes a cathode power supply line 108, and an insulating layer 109 arranged between the cathode 107 and the cathode power supply line 108, the insulating layer 109 is provided with a contact hole for conducting the cathode 107 and the cathode power supply line 108, and the cathode 107 is provided with a cathode thickening layer 112 with a thickness of 30nm, and the cathode thickening layer 112 is only flatly arranged on the positive projection area of ​​the cathode power line 108 on the cathode 107, such as image 3 shown.

[0037] The TFT 102 in this embodiment is preferably a ...

Embodiment 2

[0050] This embodiment provides an active OLED display device. The specific structure and preparation method of the device are the same as those in Embodiment 1. The only difference is that the structure of the open mask in step 3 is different, and the opening area of ​​the open mask corresponds to the cathode 107 and In the contact hole area of ​​the cathode power line, the cathode thickening layer 112 is evenly arranged on the positive projection area of ​​the contact hole on the cathode 107, such as Figure 4 shown.

[0051] The thickness of each functional layer in this embodiment can be changed according to the structure and application of the specific display device, and it is not necessary and impossible to exhaustively list all the implementation modes here, and the obvious changes or changes derived from this are still in the scope of the present invention. within the scope of protection.

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Abstract

The invention provides an active type OLED display device and a manufacturing method thereof. The active type OLED display device comprises an OLED pixel unit, wherein the OLED pixel unit comprises at least two TFTs (thin film transistors) as well as anodes, cathodes and organic functional layers which are arranged on the TFTs; the active type OLED display device further comprises a cathode power line and an insulating layer which is arranged between the cathodes and the cathode power line; contact holes used for communicating the cathodes and the cathode power line are formed in the insulating layer; cathode thickening layers are arranged on the cathodes; and the cathode thickening layers are only flatly arranged in orthographic projection areas of the contact holes on the cathodes. The thickness of the cathodes in cathode power supply contact areas is larger than that of the cathodes in other areas; the cathodes are thickened after the cathodes are prepared through an open type shade, so that the contact resistance between the OLED cathodes and the cathode power line is effectively reduced, and at the same time, the cathodes in an OLED open area are not thickened, so that the luminous efficiency of an OLED is not affected; and the preparation technology is simple and the technology can be easily implemented.

Description

technical field [0001] The invention relates to the field of organic electroluminescence, in particular to an active OLED display device. Background technique [0002] Organic light-emitting display diode (English full name is Organic Light-Emitting Diode, referred to as OLED) is an active light-emitting device. Compared with the thin film transistor liquid crystal display (English full name Liquid Crystal 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, With advantages such as thinner volume, 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 flat-panel display technology at present. [0003] According to the driving method, organic light-emitting display devices can be divided into passively driven org...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/52H01L51/56H01L27/32
Inventor 敖伟邱勇黄秀颀
Owner KUNSHAN NEW FLAT PANEL DISPLAY TECH CENT
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