LCD Panel Substrate Edge Protrusions for Narrow Frame Width
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Solution Overview
Problem
The existing design of liquid crystal display (LCD) panels limits the ability to narrow the frame width due to the wider sealant required for bonding, which in turn reduces the active display area and increases the frame size.
Innovation Solution
The introduction of protrusions and recesses on the edges of the substrates increases the bonding area with the sealant, allowing for a narrower sealant width while maintaining or improving bonding stability, thereby reducing the frame width and expanding the active display area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a wider sealant is used to ensure bonding between substrates, then bonding stability is improved, but frame width increases and active display area decreases
Solution Approach 1:
The patent transitions from a two-dimensional flat sealant application to a three-dimensional structure by adding protrusions and recesses to the substrate edges. This dimensional change increases the bonding surface area and mechanical interlocking without increasing the horizontal width of the sealant, thus maintaining bonding stability while reducing frame width.
Solution Approach 2:
The sealant bonding interface is segmented into multiple protrusions and recesses rather than a continuous flat surface. This segmentation creates multiple localized bonding zones that collectively provide enhanced bonding stability while allowing the overall sealant width to be reduced.
2Reliability
If a wider sealant is used to ensure bonding between substrates, then bonding stability is improved, but frame width increases
Solution Approach 1:
The patent transitions from a two-dimensional flat sealant application to a three-dimensional structure by adding protrusions and recesses to the substrate edges. This dimensional change increases the bonding surface area and mechanical interlocking without increasing the horizontal width of the sealant, thus maintaining bonding stability while reducing frame width.
Solution Approach 2:
The sealant bonding interface is segmented into multiple protrusions and recesses rather than a continuous flat surface. This segmentation creates multiple localized bonding zones that collectively provide enhanced bonding stability while allowing the overall sealant width to be reduced.
3Reliability
If protrusions are added to increase bonding area, then bonding stability is improved, but device complexity increases
Solution Approach 1:
The patent combines the protrusion formation with the existing thin-film deposition process by controlling material stacking to naturally form protrusions at the substrate edges. This merging of functions avoids adding separate manufacturing steps, thus reducing the increase in device complexity while achieving enhanced bonding stability.
Data Source
AI summary
The present disclosure provides a liquid crystal display (LCD) device and an LCD device. The LCD panel includes a first substrate and a second substrate oppositely arranged to the first substrate, and each of oppositely arranged surfaces of the two substrates are layered with one or more material layers. The edge of the oppositely arranged surface(s) of the first substrate and/or the second substrate is layered with protrusions and/or recesses, the edge layered with the protrusions and/or recesses is bonded with sealant, and the first substrate is bonded and fixed to the second substrate by the sealant.