OLED (Organic Light-Emitting Diode) display panel and manufacturing method thereof

Abstract

The present invention provides an OLED (Organic Light-Emitting Diode) display panel. The OLED (Organic Light-Emitting Diode) display panel comprises a substrate, at least two thin film transistors, aflat layer, at least two anodes, a spacer column, a pixel defining layer, an OLED functional layer, and a cathode; the at least two thin film transistors are arranged on the substrate at intervals; the flat layer is disposed on the at least two thin film transistors; the at least two anodes are arranged on the flat layer at intervals; the anodes penetrate the flat layer so as to be connected withthe corresponding thin film transistors; the spacer column is disposed in an interval between the anodes; the pixel defining layer is disposed on the flat layer and has pixel defining holes exposing the spacer column and the at least two anodes; the OLED functional layer is disposed on the exposed spacer column and the at least two anodes; and the cathode is disposed on the OLED functional layer.The invention also discloses a manufacturing method of the OLED display panel. According to the OLED (Organic Light-Emitting Diode) display panel and the manufacturing method thereof of the invention,the spacer column is disposed in the interval between the adjacent anodes, and therefore, an interval can be maintained between the adjacent anodes, and at the same time, it can be ensured that the adjacent anodes can be electrically insulated from each other, and therefore, display quality is not affected.

Description

technical field [0001] The invention belongs to the technical field of organic display, and in particular relates to an OLED display panel and a manufacturing method thereof. Background technique [0002] In recent years, organic light-emitting diode (Organic Light-Emitting Diode, OLED) display panel has become a very popular emerging flat display panel product at home and abroad, because OLED display panel has self-illumination, wide viewing angle, short response time, high luminous efficiency, It has the characteristics of wide color gamut, thin thickness, large-size and flexible display panel and simple manufacturing process, and it also has the potential of low cost. [0003] One of the existing methods for manufacturing high-resolution OLED display panels is to use a 2in 1 pixel structure, that is, two thin film transistors share a pixel to define the OLED functional layer in the hole, which can improve the printing accuracy. Usually, in a 2in 1 pixel structure, the an...

AI Technical Summary

Problems solved by technology

Usually in a 2in 1 pixel structure, the anodes connected to the two thin film transistors are separated in the middle (air gap), but this method is very easy to cause the two anodes to have a short circuit risk, thereby reducing the display quality

In addition, after the two anodes are fabricated, in order to meet the requirements of flatness and electrical insulation, a passivation layer is usually required to be fabricated on the two anodes before the pixel defining layer with pixel defining holes, which complicates the fabrication process. , the cost rises

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