A kind of oled display device and manufacturing method thereof

A display device and pixel technology, which is used in the manufacture of semiconductor/solid-state devices, semiconductor devices, electrical components, etc., can solve the problems of uneven display and luminous pixels stealing brightness, and achieves reduced light transmittance, uniform display, and improved product quality. Yield effect

Active Publication Date: 2019-04-26
WUHAN TIANMA MICRO ELECTRONICS CO LTD +1
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Problems solved by technology

[0007] In view of this, the present invention provides an OLED display device and a manufacturing method thereof, so as to solve the problems of uneven display and light-emitting pixels in the display process of the OLED display device in the prior art.

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  • A kind of oled display device and manufacturing method thereof
  • A kind of oled display device and manufacturing method thereof
  • A kind of oled display device and manufacturing method thereof

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Embodiment Construction

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0037] Such as figure 2 as shown, figure 2 For OLED display devices with different thickness cathodes under different currents, the corresponding start-up voltage values, figure 2 The middle abscissa is the current density, and the ordinate is the starting voltage. Among them, the small dots represent the thickness of the cathode. OLED display device, the square represents the thickness of the cathode is OLED display device. It can be seen from the ...

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Abstract

The present application discloses an OLED display device and a manufacturing method thereof. The OLED display device includes a substrate, an anode layer, a pixel definition layer, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer, and a spacer column; A passivation column located on the spacer column, the passivation column penetrates the hole injection layer, the hole transport layer, the electron transport layer and the electron injection layer; a conductive column formed on the passivation column; and a cathode layer; wherein, the conductive column and The cathode layer is electrically connected. The electrical connection between the conductive column and the cathode layer is equivalent to connecting the conductive resistance in parallel to the cathode layer, reducing the resistance of the cathode layer, thereby reducing the voltage drop of the cathode layer, and then making the OLED display device reduce the thickness of the cathode layer without increasing the thickness of the cathode layer. Based on the light transmittance of the cathode layer, the display is more uniform. In the present invention, due to the existence of passivation pillars, the lateral leakage between adjacent light-emitting pixels is reduced, the problem of stealing brightness of pixels is avoided, the occurrence of color mixing is further reduced, and the product yield is improved.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to an OLED (Organic Light Emitting Diode, Organic Light Emitting Diode) display device and a manufacturing method thereof. Background technique [0002] OLED display technology has the characteristics of self-illumination, the following will refer to figure 1 Describe the structure of a typical OLED display device, figure 1 A structural cross-sectional view of a typical OLED display device is schematically shown. [0003] refer to figure 1 , the OLED display device structure mainly includes: a pixel definition layer for defining light-emitting pixels, and the pixel definition layer includes a pixel area and a pixel interval area 02; a spacer column 03 located above the pixel interval area; and a light-emitting pixel; wherein, each Each light emitting pixel includes an anode 01 , a hole injection layer, a hole transport layer, a light emitting layer 05 , an electron trans...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/32H01L51/56
CPCH10K59/35H10K59/122H10K59/1315H10K71/00
Inventor 刘海民熊志勇
Owner WUHAN TIANMA MICRO ELECTRONICS CO LTD
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