Display Motherboard Blocking Wall Prevents Sealant Spillage
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Solution Overview
Problem
The narrow border design in liquid crystal display panels leads to sealant spillage during cutting, resulting in undesirable phenomena such as sealant puncture and break, which fail approval tests like Peel-off and Bending due to insufficient sealant width after curing.
Innovation Solution
A display motherboard with a blocking wall externally located beyond the outermost cutting line on at least one side, where the sealant is applied internally to the blocking wall to prevent spillage, ensuring a sufficient sealant width within the cutting line, formed from a photo spacer material with intervals between panels for effective sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If cutting with sealant is used to achieve narrow border design, then the visibility area is effectively widened and volume is downsized, but sealant spillage occurs at the edges causing puncture and break defects
Solution Approach 1:
The patent applies preliminary action by pre-forming the blocking wall structure between substrates before sealant application. The blocking wall is constructed during substrate assembly to preemptively prevent sealant spillage before the cutting process occurs, ensuring sealant remains contained within the designated area throughout curing.
Solution Approach 2:
The blocking wall acts as an intermediary element between the sealant and the external environment. This intermediate structure mediates the sealant containment issue by providing a physical barrier that allows the narrow border design to proceed while preventing the harmful spillage effect.
2Length of moving object
If sealant is applied to achieve narrow border cutting, then the border width is reduced, but sealant width after curing becomes insufficient leading to test failures
Solution Approach 1:
The blocking wall is pre-formed during substrate assembly to establish predetermined boundaries before sealant application. This preliminary structure ensures that sealant width is controlled within the desired parameters from the outset, preventing both spillage and insufficient width after curing.
Solution Approach 2:
The blocking wall provides localized containment precisely where needed at the edge regions between substrates. This local quality approach ensures sealant width control is applied specifically at critical areas without affecting the overall narrow border design of the display panel.
3Reliability
If sealant is pressed and cured to achieve bonding, then the sealing function is achieved, but sealant spills out in considerable amount from display panels
Solution Approach 1:
The blocking wall serves as an intermediary barrier that enables the sealing function to be achieved while preventing sealant loss. It mediates between the curing pressure that necessitates sealant flow and the requirement to contain sealant within the display panel boundaries.
Solution Approach 2:
The blocking wall structure is established in advance during substrate assembly to preemptively prevent sealant spillage before the pressing and curing process occurs. This preliminary containment structure ensures sealant remains within boundaries during the sealing operation.
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 blocking wall effectively prevents sealant spillage, maintaining a minimum sealant width of 0.55 mm within the cutting line, reducing sealant-related failures and enhancing the robustness of glass cell assembly during the cutting process.
Implementation Method 1
said blocking wall being used for blocking the spill-out of the sealant on that side
Data Source
AI summary
The present disclosure describes a display Q_panel, a display panel and a manufacturing method thereof, as well as a display apparatus. The display Q_panel comprises a first and a second substrate for cell assembling to pre-form a plurality of display panels. The display Q_panel is provided, between the first substrate and the second substrate, with a blocking wall at the edge region on at least one side thereof, the blocking wall being located externally to the outmost cutting line on that side where it is located, and the sealant on that side being provided internally to the blocking wall. By providing a blocking wall externally to the outmost cutting line on the display Q_panel, the blocking wall blocks the spill-out of the sealant on that side, reduces the undesirable phenomena of sealant puncture, sealant break, etc. arising from the display panels after the cutting, can respond better to the Peel-off, Bending or other tests, and improves the robustness of glass cell assembling.