Display Substrate Insulating Pattern Hollows for Gas Exhaust
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Solution Overview
Problem
In the manufacturing of display products, the release of gas from organic insulating film layers during the formation process can cause damage to other film layers or structures, and the need for large groove-shaped openings in the frame region to facilitate gas exhaust complicates the design of narrow frame displays.
Innovation Solution
A display substrate design that includes a base substrate with a display region and a peripheral region, featuring a first gate driving circuit and signal lines in the peripheral region. The signal lines are configured with a multi-layer insulating pattern that includes hollows to allow gas discharge, reducing the layout space required for gas exhaust and supporting narrow frame designs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If large groove-shaped openings are provided in the frame region to facilitate gas exhaust, then gas discharge is improved, but the layout space is increased and narrow frame design is complicated
Solution Approach 1:
The patent transitions from planar groove openings to three-dimensional hollow structures within the insulating pattern. The hollows are formed inside the insulating material volume, allowing gas discharge pathways to extend in the vertical dimension rather than requiring large horizontal openings in the frame region.
Solution Approach 2:
The insulating pattern is designed with hollow structures that create porous pathways for gas discharge. These hollows allow gas to escape through the insulating material itself, eliminating the need for separate large groove openings while maintaining effective gas venting.
2Object-generated harmful factors
If groove-shaped openings are provided for gas exhaust, then gas discharge is improved, but the design complexity increases
Solution Approach 1:
The patent combines the gas discharge function with the insulating pattern structure. The hollows are integrated into the insulating material formation process, merging two functions (insulation and gas discharge) into a single structural element, thereby reducing overall design complexity.
Solution Approach 2:
The insulating pattern serves multiple functions: providing electrical insulation and facilitating gas discharge through its hollow structures. This multi-functionality eliminates the need for separate gas exhaust grooves, simplifying the overall design.
3Reliability
If organic insulating material is used, then insulating performance is improved, but gas release during manufacturing causes damage to other film layers
Solution Approach 1:
The hollow structures are pre-formed within the insulating pattern before the organic material is fully deposited or cured. This preliminary action creates escape pathways for gas that will be released during subsequent manufacturing processes, preventing gas from damaging other film layers.
Solution Approach 2:
The patent converts the harmful gas release from organic insulating material into a beneficial feature by incorporating hollow structures that channel the gas discharge in a controlled manner. The gas that would otherwise damage film layers is now directed through predetermined pathways, protecting the manufacturing process.
Data Source
AI summary
A display substrate and a manufacturing method thereof, and a display device are provided. In the display substrate, each signal line includes a first conductive portion; for at least one signal line, the display substrate includes a multi-layer insulating pattern on a side of the first conductive portion away from the base substrate; a first insulating pattern in the multi-layer insulating pattern includes a hollow, and an orthographic projection of the hollow on the base substrate is at least partially in a region surrounded by an orthographic projection of the first conductive portion on the base substrate; and for at least one clock signal line included in the at least one signal line, a ratio between a size of the hollow in a first direction and a size of a shift register unit in the first direction ranges from ¾ to 1.