OLED (Organic Light Emitting Diode) display device and production method thereof

Abstract

The invention discloses an OLED (Organic Light Emitting Diode) display device and a production method thereof. The OLED display device comprises a substrate, anode layers, pixel defining layers, hole injecting layers, hole transmitting layers, light emitting layers, electron transporting layers, electron injecting layers, spacing pillars and blocking pillars positioned on a region beyond of the spacing pillars on pixel spaced regions; the blocking pillars at least penetrate through the hole transporting layers and the hole injecting layers. In the OLED display device provided by the invention, one spacing pillar is produced in the pixel spacing region between two adjacent light emitting pixels with different colors, and at least one of two inner angles, close to the pixel spacing region, of each blocking pillar is greater than 90 degrees, so that when organic materials such as the hole transporting layers and the hole injecting layers are evaporated, the hole transporting layers and the hole injecting layers can be broken at positions of the blocking pillars, and further transverse current leakage between a certain light-emitting pixel and the adjacent light emitting pixel is reduced when the certain light-emitting pixel is lightened; the problem of light stealing of other light-emitting pixels is solved, and the yield of the product 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 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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