Display base plate and manufacturing method and display panel thereof

Abstract

The disclosure provides a display base plate and a manufacturing method and display panel thereof. The display base plate comprises a substrate base plate, a display area arranged on the substrate base plate and a lead area positioned on the periphery of the display area, wherein the lead area comprises at least one signal line and at least one invisible line, the distance between the surface of the invisible line, which is far away from the substrate base plate, and the substrate base plate, is greater than the distance between the surface of the signal line, which is far away from the substrate base plate, and the substrate base plate. The invisible line is arranged along the signal line, and compared with the signal line, the distance between the surface of the invisible line and the substrate base plate is greater, i.e., the surface height of the invisible line is greater than that of the signal line, when conducting cutting process, the invisible line of which the height is above the signal line is cut in priority, so that adjacent signal lines can be protected.

Description

technical field [0001] Embodiments of the present disclosure relate to a display substrate, a manufacturing method thereof, and a display panel. Background technique [0002] Flat panel display has developed rapidly in the past ten years and has received extensive attention. Therefore, adopting more advanced manufacturing technology, simplifying production process, reducing cost and improving product yield have become an important guarantee for manufacturers to survive in the competition. However, during the manufacturing process of the display panel, the color filter substrate above the signal lines in the peripheral area of ​​the array substrate after the cutting process will be cut off, so that the peripheral area of ​​the array substrate is exposed for subsequent procedures. The signal lines in the peripheral area are used to transmit the signal of the drive circuit to the display area, to control the opening and closing of the thin film transistor (TFT) switch in each ...

AI Technical Summary

Problems solved by technology

[0003] After the cutting process is completed, there are still many technological processes and inspection processes. In the actual production process, these signal lines are often faced with the problem of being scratched or scraped off, resulting in poor display and affecting product yield.

Especially when the signal line in the peripheral area is a double-layer line, since the signal line formed using the source-drain electrode layer is higher than the signal line formed using the gate electrode, for example, by 220 nanometers, it is often firstly affected by scratches, In addition, the upper layer of the signal line formed by the source-drain electrode layer is only covered by a passivation layer, and the protection is weak. Therefore, the signal line formed by the source-drain electrode layer is more likely to be cut, resulting in poor display and affecting product yield.

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