Liquid Crystal Display Panel Edge Grinding Adhesive Layer
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Solution Overview
Problem
The manufacturing of special-shaped liquid crystal display panels faces challenges with blade wheel cutting or laser cutting, leading to misalignment and cracking due to the double-layer glass structure, and subsequent grinding processes risk peeling of the frame sealant, which can result in ruptures and longer production times.
Innovation Solution
A method involving a mother substrate with a preset edge and an adhesive layer arranged outside the frame sealant, where the substrate is cut and ground along the preset edge to remove the adhesive layer, preventing peeling and enhancing the bonding between substrates, thus stabilizing the display panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If blade wheel cutting or laser cutting is used to create special-shaped panels, then the visual impact and design diversity are enhanced, but misalignment and cracks occur at the edges due to the double-layer glass structure
Solution Approach 1:
The adhesive layer is applied to the edges of the first substrate before cutting, creating a protective barrier in advance. This preliminary action ensures that when cutting occurs, the adhesive layer already exists to prevent misalignment and cracks, resolving the edge integrity issue while maintaining design flexibility
Solution Approach 2:
The adhesive layer acts as an intermediary substance between the cutting blade and the double-layer glass structure. It mediates the cutting process by providing adhesion that prevents the layers from separating or misaligning during cutting, thus maintaining manufacturing precision while enabling special shapes
2Manufacturing precision
If grinding is performed after cutting to form uniform end surfaces, then edge neatness is improved, but the frame sealant peels off due to grinding wheel vibration, causing ruptures
Solution Approach 1:
The adhesive layer is applied beforehand to cushion and absorb the vibrations generated during grinding. This prior cushioning protects the frame sealant from peeling by dampening the mechanical shocks, thus maintaining reliability while achieving uniform end surfaces
Solution Approach 2:
The adhesive layer serves as a mediator between the grinding wheel and the frame sealant. It absorbs and dissipates vibration energy, preventing direct transmission of harmful vibrations to the sealant, thereby preventing peeling while enabling precise grinding
3Reliability
If grinding speed is reduced to minimize frame sealant peeling, then the risk of rupture is decreased, but grinding time increases, which is not beneficial for mass production
Solution Approach 1:
The adhesive layer provides beforehand cushioning that protects the frame sealant from vibration-induced peeling. This protective cushioning allows the grinding wheel to operate at high speeds without causing sealant failure, thus maintaining both reliability and high productivity
Solution Approach 2:
The adhesive layer acts as a vibration-absorbing intermediary that decouples the grinding process from the frame sealant. This enables high-speed grinding because the adhesive layer absorbs harmful vibrations, allowing fast processing without compromising sealant bonding
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
This method effectively prevents peeling and breaking of substrates during grinding, enhancing the reliability and stability of the liquid crystal display panel by using an adhesive layer to bond and strengthen the substrates, while reducing production time.
Implementation Method 1
an adhesive layer and a frame sealant, the adhesive layer and the frame sealant are between the first substrate and the second substrate
Implementation Method 2
grinding the display device along the preset edge and removing the adhesive layer
Data Source
AI summary
A method for manufacturing a liquid crystal display panel and a liquid crystal display panel are provided. The method of manufacturing a liquid crystal display panel comprises the following steps: grinding the display device along a preset edge and removing the adhesive layer on a side of the preset edge away from a frame sealant, to obtain the liquid crystal display panel.