Display Panel Sealing with Exothermic Member
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The manufacturing of digital display devices faces challenges with the sealing member, as thermosetting materials used for sealing can damage display elements during curing due to outgases or reactivity with ultraviolet light, and the process of selectively exposing and curing the sealing member becomes complex and time-consuming with increasing substrate lengths.
Innovation Solution
A display panel assembly and manufacturing method that employs a thermosetting sealing member cured by heat, using an exothermic member between the sealing member and the substrate to generate Joule heat for curing, eliminating the need for masks and reducing curing time and potential damage to display elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a thermosetting material is used for the sealing member and cured by heat, then the sealing member can provide good sealing performance, but the outgases from curing may damage the display elements
Solution Approach 1:
The patent divides the substrate into a display region and a non-display region, and places the exothermic member only in the non-display region. This segmentation allows the curing process to be localized away from the display elements, enabling the sealing member to be cured with thermosetting material without the outgases damaging the display elements.
Solution Approach 2:
The exothermic member acts as an intermediary that generates heat for curing the sealing member without requiring direct contact between the heat source and the display elements. By placing the exothermic member in the non-display region, it mediates the curing process while isolating the display elements from harmful outgases.
2Temperature
If ultraviolet light is used to cure the sealing member, then curing can be performed without heat damage, but the display elements may be damaged due to reactivity with ultraviolet light
Solution Approach 1:
The patent replaces the ultraviolet light curing mechanism with a heat-based curing mechanism using an exothermic member. This substitution eliminates the harmful effects of ultraviolet light on display elements while achieving the same curing objective through thermal energy instead of electromagnetic radiation.
3Manufacturing precision
If a mask is used to selectively expose the sealing member region for ultraviolet curing, then the sealing member can be cured selectively, but the manufacturing process becomes complicated and time-consuming
Solution Approach 1:
The patent extracts the curing function from the ultraviolet light source and mask system, and relocates it to an exothermic member that is integrated into the non-display region of the substrate. This extraction eliminates the need for separate mask components and alignment procedures, simplifying the manufacturing process while maintaining selective curing capability.
Solution Approach 2:
The patent merges the curing function with the substrate structure by integrating the exothermic member into the non-display region of the substrate itself. This combination eliminates the need for separate mask components and alignment procedures, simplifying the manufacturing process while maintaining selective curing capability.
4Manufacturing precision
If a mask is used for selective ultraviolet curing, then the sealing member can be cured selectively, but the process takes a long period of time
Solution Approach 1:
The exothermic member is pre-positioned in the non-display region of the substrate before the sealing member is applied. This preliminary placement eliminates the need for time-consuming mask alignment steps during the curing process, allowing for rapid and selective curing of the sealing member without compromising precision.
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 allows for efficient and rapid curing of the sealing member without damaging the display elements, simplifying the manufacturing process and reducing the complexity of sealing large substrates.
Implementation Method 1
an exothermic member interposed between the sealing member and the first substrate to generate heat for curing the sealing member
Data Source
AI summary
A display panel assembly includes a first substrate having an effective display region for displaying an image and a non-effective display region positioned at a peripheral region outside of the effective display region, a second substrate facing the first substrate, a sealing member disposed along a boundary between the effective display region and the non-effective display region between the first and second substrates, the sealing member including a thermosetting material, and an exothermic member interposed between the sealing member and the first substrate to generate heat for curing the sealing member.