Display substrate, manufacturing method thereof, display panel and display device

Abstract

The invention discloses a display substrate, a manufacturing method thereof, a display panel and a display device. Through arrangement of a first isolation part and a second isolation part, a first isolated part is disconnected with at least one of a second isolated part and a third isolated part, so that when the isolated layer is a cathode multiplexed as a self-capacitance electrode, the cathodeisolation effect can be enhanced; when the isolated layer is the inorganic thin film packaging layer contained in the frame area, cracks generated by cutting or other reasons can be prevented from expanding to the display area; and therefore, the display quality and the touch effect are improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a display substrate, a manufacturing method thereof, a display panel, and a display device. Background technique [0002] Organic electroluminescent display (OLED) products have the advantages of fast response speed, thin thickness, and high contrast, and have gradually begun to encroach on the market of liquid crystal display (LCD) products, especially their bendable and flexible features. Become the preferred technology for flexible display devices. However, in OLED products with a touch function, it is necessary to separate the cathodes of different pixels or different regions so as to be reused as self-capacitance electrodes. [0003] Such as figure 1 Shown is a schematic diagram of a cathode isolation scheme in the prior art. Specifically, it includes: a base substrate 101, a pixel definition layer 102, an isolation layer 103, a cathode 104, an anode 105, and a transisto...

AI Technical Summary

Problems solved by technology

This cathode isolation scheme usually cannot effectively isolate the cathode, such as figure 2 As shown in the middle ellipse area, the side of the isolation layer 103 is covered with a cathode 104, which will lead to abnormal display or touch failure

Especially when the cathode is made by the sputtering coating (Sputter) process, because the diffusion effect of the sputtering coating process is better, the isolation effect of the cathode is worse

In addition, cracks are prone to occur during the process of cutting the mother board to form multiple display substrates

Once the cracks caused by cutting or other reasons spread to the display area, it will affect the display and touch performance of the product

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