OLED Display Sealing Member Gold Layer Dead Space Reduction
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Solution Overview
Problem
Existing OLED displays have a large dead space due to the sealing member, which occupies a significant area and can lead to reduced adhesive strength and susceptibility to oxidation or volatilization, affecting the integrity and longevity of the display.
Innovation Solution
The use of a gold layer on the sealing member, which reduces the dead space by increasing the contact area with the substrates and preventing oxidation, combined with a method of forming the sealing member to fill specific through holes in the substrates, enhancing adhesive strength and reducing the volume of the sealing member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the sealing member is made larger to increase adhesive strength, then the adhesive strength is improved, but the dead space occupied by the sealing member increases
Solution Approach 1:
The patent applies composite materials by forming a gold layer on the sealing member that includes glass frit. The gold layer serves multiple functions: it provides oxidation resistance, enhances adhesive strength through improved bonding properties, and reduces the required width of the sealing member. This composite structure allows the sealing member to achieve higher strength without increasing its area, thereby reducing dead space while maintaining or improving adhesive performance.
2Area of stationary object
If the sealing member is made thinner to reduce dead space, then the dead space is reduced, but the adhesive strength and protection against oxidation deteriorate
Solution Approach 1:
The gold layer formed on the sealing member provides oxidation resistance without requiring an increase in sealing member thickness. The gold layer acts as a protective barrier that prevents oxidation and volatilization of the glass frit sealing material, allowing the sealing member to remain thin while maintaining reliability and protection against environmental degradation.
3Area of stationary object
If the sealing member width is reduced to minimize dead space, then the dead space is reduced, but the adhesive strength between substrates decreases
Solution Approach 1:
The gold layer on the sealing member significantly enhances adhesive strength through improved bonding properties. This allows the sealing member width to be reduced to minimize dead space while the gold layer compensates for the reduced contact area by providing superior adhesion. The composite structure of glass frit with gold coating enables thin sealing members to maintain high bonding strength between substrates.
Solution Approach 2:
The patent changes the physical and chemical parameters of the sealing member by coating it with gold. This parameter change includes improving surface energy, wettability, and bonding characteristics of the sealing member. These parameter changes enable the sealing member to achieve higher adhesive strength at reduced widths, effectively resolving the contradiction between minimizing dead space and maintaining bonding 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 approach minimizes the dead space occupied by the sealing member, maintains strong adhesive contact between substrates, and prevents oxidation or volatilization, thereby improving the structural integrity and longevity of the OLED display.
Implementation Method 1
oxidation or volatilization of the sealing member is substantially prevented
Implementation Method 2
a sealing member surrounding the display area and attaching the first and second substrates to each other
Data Source
AI summary
An organic light-emitting diode (OLED) display is disclosed. In one aspect, the OLED display includes a first substrate including a display area and a second substrate facing the first substrate. The OLED display also includes a sealing member surrounding the display area and attaching the first and second substrates to each other and a gold layer formed on the sealing member.