Display Panel Sealing Member Thermal Management
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Solution Overview
Problem
The quality of display panels can be deteriorated when heat is transferred to display elements through their edges during or after manufacturing, particularly due to the use of uniform conductive materials in sealing members, which can lead to thermal damage and mechanical weakness.
Innovation Solution
A display panel design featuring a first conductive line with lower thermal conductivity than a second conductive line, where the first conductive line is positioned between the substrate and the sealing member, and the second conductive line is positioned between the substrate and the display area, with overlapping ends connected through an insulating layer, ensuring mechanical strength and thermal protection by minimizing heat transfer during manufacturing processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If uniform conductive materials are used in sealing members, then electrical connectivity is ensured, but thermal damage occurs to display elements
Solution Approach 1:
The patent applies local quality by using different conductive materials with different thermal conductivities in different regions. The first conductive line uses a material with lower thermal conductivity to protect display elements from heat, while the second conductive line uses a material with higher thermal conductivity for regions where thermal protection is less critical. This spatial differentiation of material properties resolves the contradiction between ensuring electrical connectivity and preventing thermal damage.
Solution Approach 2:
The patent employs composite materials by combining conductive materials with different thermal conductivities in a multi-layer sealing structure. The first conductive line and second conductive line are formed with different materials, creating a composite sealing member that simultaneously provides electrical connectivity through both lines while the lower thermal conductivity material in the first line acts as a thermal barrier to protect display elements.
2Temperature
If high thermal conductivity materials are used for heat dissipation, then thermal management is improved, but mechanical strength decreases
Solution Approach 1:
The patent applies local quality by assigning different material properties to different conductive lines based on their functional requirements. The second conductive line uses high thermal conductivity material for heat dissipation in regions where thermal management is prioritized, while the first conductive line uses lower thermal conductivity material that also provides good mechanical strength for structural support and sealing integrity. This localized differentiation resolves the contradiction between heat dissipation and mechanical strength.
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 design effectively reduces the risk of thermal damage to display elements by managing heat distribution and maintaining mechanical integrity, thereby enhancing the quality and reliability of the display panel.
Implementation Method 1
the first conductive line and the second conductive line include different materials, and a thermal conductivity of the first conductive line may be less than a thermal conductivity of the second conductive line
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
A display panel includes: a first substrate including an opening area, a display area, and a non-display area; a plurality of display elements arranged in the display area; a second substrate facing the first substrate with the plurality of display elements therebetween; a sealing member arranged between the first substrate and the second substrate; a first conductive line between the opening area and the display area, the first conductive line overlapped by a first portion (350A) of the sealing member (350); and a second conductive line overlapped by a second portion (350B) of the sealing member (350).