Conductive Sealing Glue for Narrow Display Frame Design
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Solution Overview
Problem
Current display devices face challenges in achieving both electrical conductivity and a sufficient water vapor barrier effect, often requiring additional frame glue to prevent moisture intrusion.
Innovation Solution
A display device design incorporating a sealing glue with a conductive portion that surrounds the display layer, providing both electrical conductivity and water vapor barrier functionality without the need for additional width, utilizing conductive particles in the sealing material to maintain low resistivity and controlled water vapor transmission rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conductive glue is used to connect conductive structures, then electrical conductivity is achieved, but water vapor barrier effect is insufficient
Solution Approach 1:
The patent uses composite sealing glue containing conductive particles (silver powder, aluminum powder, or copper powder) dispersed in a sealing material matrix. This composite structure provides both electrical conductivity through the conductive particles and water vapor barrier properties through the sealing material, eliminating the need for separate frame glue layers.
Solution Approach 2:
The sealing glue is designed to perform multiple functions simultaneously: it provides electrical conductivity to connect conductive structures, creates a water vapor barrier to prevent moisture intrusion, and maintains structural sealing. This multi-functional material replaces the need for separate conductive glue and frame glue components.
2Object-affected harmful factors
If frame glue is applied with sufficient width outside conductive glue, then water vapor barrier effect is achieved, but device size increases
Solution Approach 1:
By formulating a composite sealing glue that inherently possesses both sealing and conductive properties, the patent eliminates the need for additional wide frame glue applications. The conductive particles embedded in the sealing material provide conductivity without requiring extra width, thus achieving narrow frame design.
Solution Approach 2:
The patent merges the functions of conductive glue and frame glue into a single sealing glue layer. This unified approach combines the electrical conductivity function with the water vapor barrier function in one material layer, reducing the overall width requirement compared to separate layers.
3Object-affected harmful factors
If sealing glue is widened to provide water vapor barrier, then moisture protection is improved, but electrical conductivity path is disrupted
Solution Approach 1:
The sealing glue contains conductive particles distributed throughout the sealing material matrix, ensuring that electrical conductivity is maintained even when the sealing glue width is increased for better moisture protection. The conductive particles create continuous conductive paths within the widened sealing layer.
Solution Approach 2:
The conductive particles are strategically distributed within the sealing glue to maintain electrical conductivity in specific regions while the overall sealing glue provides comprehensive moisture protection. This local concentration of conductive properties ensures conductivity paths are not disrupted by the sealing material.
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 solution enables a narrow frame design while ensuring effective water vapor barrier and electrical conductivity, reducing the risk of moisture intrusion and enhancing the durability of the display device.
Implementation Method 1
The sealing glue has a conductive portion, and the conductive portion is in contact with the conductive pad... the conductive portion is in contact with the electrode layer, and the electrode layer and the conductive pad are electrically connected through the conductive portion
Implementation Method 2
the sealing glue cannot provide sufficient water vapor barrier effect... the water vapor transmission rate (WVTR) of the sealing glue is 5 grams·mil/100 inches2·day to 68 grams·mil/100 inches2·day
Data Source
AI summary
A display device including a first substrate, a second substrate, a display layer, and a sealing glue is provided. The first substrate includes a conductive pad. The second substrate is opposite to the first substrate. The display layer is disposed between the first substrate and the second substrate. The sealing glue is disposed between the first substrate and the second substrate and surrounds the display layer. The sealing glue has a conductive portion, and the conductive portion is in contact with the conductive pad.