Organic light emitting display panel and manufacturing method thereof

Abstract

An organic light-emitting display panel, including a substrate, a thin film transistor formed above the substrate, a touch circuit, an organic light emitting diode formed above the thin film transistor, the touch circuit includes driving electrodes and sensing electrodes, and the organic light emitting diode includes an anode layer, a cathode layer and an organic light emitting layer located between the anode layer and the cathode layer, the thin film transistor includes at least two metal layers, the sensing electrode of the touch circuit is formed on one of the metal layers of the thin film transistor, and the driving electrode of the touch circuit is formed on the organic light emitting layer The cathode layer of the diode. In the present invention, the sensing electrode of the touch circuit is formed on the same layer as a metal layer of the thin film transistor, and the driving electrode of the touch circuit is formed on the same layer as the cathode of the organic light emitting diode, so as to reduce the overall size of the organic light emitting display panel. Thickness, the effect of reducing process and cost. The present invention also provides a method for manufacturing the above organic light emitting display panel.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to an organic light emitting display panel and a manufacturing method thereof. Background technique [0002] Organic light-emitting diodes (OLED) is a display panel made of organic materials, which has the advantages of low operating voltage, fast response speed, high luminous efficiency, wide viewing angle and wide operating temperature. , which is beneficial to the thinning, low power consumption and curved surface design of the display panel components, therefore, it has gradually become the focus of research in the field of display panels. [0003] Most of the existing OLED touch screens are manufactured separately from the display screen, making GFF (Glass + ITO Film + ITO Film,), GF2 (glass+2*ITO film) and other external touch screens, and then attaching them to the display screen. Together to form a complete touch display device, this structure will lead to an incre...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing OLED touch screens are manufactured separately from the display screen, making GFF (Glass + ITO Film + ITO Film,), GF2 (glass+2*ITO film) and other external touch screens, and then attaching them to the display screen. Together to form a complete touch display device, this structure will lead to an increase in the overall thickness of the OLED device, which is not conducive to the thinner and lighter design of the product

[0004] In addition, the drive electrode TX and the sensing electrode RX of the plug-in touch screen need at least two coating yellow light processes, and the touch screen and the display screen need to be bonded again, the process is complicated and the cost is high

At the same time, the openings of the metal grid of the touch screen are close to the pixels of the display screen, which is periodic, and it is easy to cause optical interference between the metal grid of the touch screen and the pixel openings of the display screen, forming moiré patterns and affecting the display effect

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