Display Substrate Through Holes Sealant Gas Exhaustion
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Solution Overview
Problem
The adhesion strength between the cover plate and the back plate in a display panel is decreased due to the uneven surface of the cured sealant, which allows gases to accumulate and reduce the sealing effectiveness.
Innovation Solution
A display substrate with a sealing region containing multiple through holes is used, allowing gases to escape and improving the adhesion strength by ensuring the sealant fills these holes during the assembly process, with optional fillers to enhance structural support and prevent plugging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sealant is applied and cured to form a seal between the cover plate and back plate, then the sealing function is achieved, but the surface becomes uneven causing gas accumulation and reduced adhesion strength
Solution Approach 1:
The patent introduces through-holes (porous structure) in the sealing region of the back plate to enable gas escape during the sealing process. This porous design allows the sealant to form a uniform seal without gas accumulation, thereby maintaining both sealing effectiveness and adhesion strength. The through-holes create a controlled porous pathway that resolves the contradiction between achieving a complete seal and preventing gas entrapment.
Solution Approach 2:
The sealing region is segmented by introducing multiple through-holes that divide the sealing space into discrete pathways. This segmentation allows gas to escape through specific channels while the sealant fills the remaining spaces to form a continuous adhesive bond, thus maintaining both sealing integrity and adhesion strength simultaneously.
2Strength
If the sealant is melted and spread to adhere the back plate and cover plate, then the adhesion is formed, but the uneven surface prevents uniform spreading and reduces bonding quality
Solution Approach 1:
The through-holes create a porous template that guides the melted sealant to spread uniformly across the sealing region. As the sealant flows through and around the holes, it forms an even distribution pattern, eliminating the uneven surface problem and ensuring consistent adhesion strength across the entire bonding interface.
Solution Approach 2:
The through-holes act as an intermediary structure that mediates between the melted sealant and the substrate surface. They provide a controlled pathway that regulates sealant flow and distribution, transforming the uneven spreading issue into a uniform bonding pattern that enhances manufacturing precision.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The through holes in the sealing region enhance the adhesive interface quality and sealing effect by exhausting gases and ensuring uniform sealing strength, thereby improving the overall adhesion and sealing performance.
Implementation Method 1
heating both of the sealing regions to melt the sealant at a first temperature, and the melted sealant is filled into the plurality of through holes
Implementation Method 2
the cured sealant is melted by laser irradiating
Data Source
AI summary
A display substrate, a method for manufacturing thereof, a display panel and a method for manufacturing thereof are disclosed. The display substrate includes a display region and a sealing region surrounding the display region. A plurality of through holes are formed within the sealing region of the display substrate.