Liquid Crystal Panel Protrusions for Sealant Solidification
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Solution Overview
Problem
In liquid crystal panels, the insufficient solidification of the sealant adjacent to metal signal lines during the manufacturing process leads to reduced adhesion strength and potential damage due to contamination and infiltration of liquid crystal material, especially under shock or vibration.
Innovation Solution
The introduction of protrusions near the sealant between the substrates, which are alternately arranged with the signal lines, narrows the gap and enhances the capillary phenomenon, delaying the liquid crystal material's contact with insufficiently solidified sealant portions and preventing contamination, while also improving adhesion strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal signal lines are disposed between the sealant and substrate, then electrical signal transmission is enabled, but UV beams cannot transmit through the signal lines causing insufficient solidification of the sealant
Solution Approach 1:
The space between substrates is segmented into multiple regions by introducing protrusions that extend from one substrate toward the other. These protrusions divide the sealant-containing gap into separate zones, allowing controlled solidification progression from regions away from signal lines toward the signal line regions, thereby solving the UV blocking problem while maintaining adhesion strength.
Solution Approach 2:
The protrusions are pre-formed on the substrate before sealant application. This preliminary structure creates predetermined pathways and zones that guide the solidification process, ensuring that sealant solidifies completely before liquid crystal material is introduced, preventing contamination while maintaining structural integrity.
2Reliability
If the main solidifying procedure takes a long period of time, then complete solidification is achieved, but liquid crystal material may contaminate the insufficiently solidified sealant portions
Solution Approach 1:
By segmenting the gap into multiple regions using protrusions, the solidification process is divided into manageable zones. This allows the sealant to solidify in a controlled sequence rather than requiring uniform solidification across the entire gap, reducing the overall time required while ensuring complete solidification before liquid crystal material contact.
Solution Approach 2:
The protrusions perform a preliminary function of creating physical barriers and guiding channels that control liquid crystal material flow. This preliminary structuring prevents contamination during the solidification process, eliminating the need for extended waiting times and enabling faster production cycles.
3Reliability
If protrusions are introduced to narrow the gap, then capillary phenomenon is enhanced and liquid crystal material contact is delayed, but device structure becomes more complex
Solution Approach 1:
The protrusions serve multiple functions simultaneously: they narrow the gap to enhance capillary action, guide liquid crystal material flow away from insufficiently solidified sealant regions, provide structural support, and define the accommodating space. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity while achieving contamination prevention.
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 protrusions effectively prevent contamination of the liquid crystal material by ensuring complete solidification of the sealant and enhancing the adhesion strength between substrates, thereby improving the reliability of the liquid crystal panel.
Implementation Method 1
The introduction of protrusions near the sealant between the substrates, which are alternately arranged with the signal lines, narrows the gap and enhances the capillary phenomenon
Implementation Method 2
In the pre-solidifying procedure, ultraviolet (UV) beams are provided to expose the sealant 140, so as to solidify an outer portion of the sealant 140 and increase a rigidity of the sealant 140
Implementation Method 3
In the main solidifying procedure, the sealant 140 is heated, and simultaneously an external pressing force is provided to press the first substrate 110 towards the second substrate 120
Data Source
AI summary
An exemplary liquid crystal panel includes a first substrate and a second substrate parallel to each other to define a gap therebetween, a sealant disposed around the gap to provide an accommodating space, a liquid crystal layer disposed in the accommodating space, a plurality of signal lines disposed on at least one of the first and second substrates, and a plurality of protrusions at a peripheral side of the liquid crystal layer. The protrusions are configured to narrow the gap thereat. A part of each signal line is disposed between the sealant and the corresponding one of the first and second substrates, and each of the protrusions is arranged between two respective signal lines. A related method for manufacturing a liquid crystal panel is also provided.