A kind of oled display device and manufacturing method thereof

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 and an electron injection layer, and a spacer. column; a barrier column located on an area other than the spacer column on the pixel spacing region, the barrier column at least penetrates the hole transport layer and the hole injection layer; in the OLED display device provided by the present invention, in two adjacent color Barrier columns are made on the pixel spacing area between the light-emitting pixels, and at least one of the two internal angles of the barrier column close to the pixel spacing area is greater than 90°, so that when organic materials such as hole transport layers and hole injection layers are evaporated, it is possible to The hole transport layer and the hole injection layer are disconnected at the barrier column, thereby reducing the lateral leakage between a certain light-emitting pixel and adjacent light-emitting pixels when a light-emitting pixel is lit, and preventing other light-emitting pixels from stealing light. Problems, improve product yield.

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 plurality of light-emitting pixels, as shown in the figure R (Red), G (Green), and B (Blue); wherein, each light-emitting pixel includes an anode 01, a hole injection layer 04, a hole A hole transport layer 05 , a light emitting layer 06 , an electron transport layer, an electron injection layer and a cathode 08 . For the convenience of explanation, figure 1 The electron injection...

AI Technical Summary

Problems solved by technology

Due to the good conductivity of the hole injection layer and the hole transport layer, when controlling the light emission of a certain light-emitting pixel, the holes flow from the anode to the cathode, and at the same time, a lateral leakage current will be generated, passing through the hole transport layer and the hole The injection layer reaches adjacent light-emitting pixels, causing other color light-emitting pixels to steal light

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