Display Substrate Protrusion Structures Prevent Insulating Layer Separation
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Solution Overview
Problem
In display panels, particularly in the peripheral regions, insulating layers tend to separate easily, leading to cracks and affecting the structural reliability and separation strength, which compromises the quality of the panel.
Innovation Solution
A display substrate design featuring protrusion structures between insulating layers in the peripheral region, with a groove on the sidewall and circumference, increasing the contact area and preventing layer separation, while being made of materials like titanium, molybdenum, aluminum, or their combinations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If insulating layers are arranged in the peripheral region of the display substrate, then the display region can be defined, but the insulating layers tend to separate and crack easily, reducing structural reliability
Solution Approach 1:
The patent introduces protrusion structures that extend in the vertical dimension (thickness direction) between adjacent insulating layers. These protrusions create additional contact areas and mechanical interlocking, transforming a potential 2D separation problem into a 3D reinforced structure that resists layer separation and cracking in the peripheral region
2Reliability
If protrusion structures are added between insulating layers to prevent separation, then structural integrity improves, but manufacturing complexity increases
Solution Approach 1:
The protrusion structures are formed using the same material layers and deposition processes as the existing insulating layers. By merging the protrusion formation into the standard manufacturing flow (using the same sputtering or CVD processes), the patent avoids adding separate manufacturing steps, thereby limiting the increase in manufacturing complexity while still achieving enhanced structural integrity
Data Source
AI summary
The present disclosure provides a display substrate and a display panel, and belongs to the field of display technology. The present display substrate includes a display region and a peripheral region surrounding the display region; the display substrate includes: a base substrate; a plurality of insulating layers sequentially arranged along a direction away from the base substrate; wherein each of the plurality of insulating layers is located in the display region and the peripheral region; one or more protrusion structures arranged between at least two adjacent ones of the plurality of insulating layers and in the peripheral region.