Display Module Side Sealing via Opaque Adhesive
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Solution Overview
Problem
Display apparatuses face issues with moisture permeation and light leakage at the side surfaces of the display module, which can damage the display panel and degrade image quality.
Innovation Solution
A display apparatus structure is proposed, featuring a cover member and an adhesive member with a protective part that is bent and attached to the side surfaces of the display module. The adhesive member is made of an opaque material to prevent light leakage and is designed to fully seal the side surfaces, preventing moisture ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the case and cover member are coupled to form the display apparatus, then the display module is enclosed and protected, but gaps occur at the coupling portions allowing moisture permeation and light leakage
Solution Approach 1:
The adhesive member is divided into two functional parts: a base portion for bonding the cover member to the case, and a protective part that extends to seal the gap. This segmentation allows each part to perform its specific function optimally - the base portion provides structural bonding while the protective part prevents moisture and light intrusion at the coupling gap.
Solution Approach 2:
The protective part of the adhesive member extends in a direction perpendicular to the main bonding interface, projecting into the gap region. This dimensional extension transforms a 2D bonding surface into a 3D sealing structure that physically blocks the gap, preventing moisture permeation and light leakage from the coupling portion.
2Illumination intensity
If the adhesive member is made opaque to prevent light leakage, then image quality is maintained, but the adhesive member must be applied precisely to seal gaps
Solution Approach 1:
The protective part of the adhesive member is pre-formed with an extended structure that automatically seals the gap when the cover member is coupled to the case. This preliminary formation of the sealing structure eliminates the need for precise manual application, as the protective part self-aligns and seals the gap during the coupling process, reducing manufacturing precision requirements.
Solution Approach 2:
The protective part of the adhesive member is designed as a flexible extension that can adapt to slight variations in gap dimensions. This flexibility allows the protective part to conform to the actual gap geometry during coupling, maintaining effective sealing even when there are minor variations in manufacturing tolerances, thereby reducing the stringency of precision requirements.
3Volume of moving object
If the display module is miniaturized for portability, then device size is reduced, but the side surfaces become more susceptible to moisture ingress and light leakage
Solution Approach 1:
The protective part of the adhesive member acts as a flexible sealing film that conforms to the side surfaces of the miniaturized display module. This flexible sealing structure effectively covers the side surfaces regardless of the module's small dimensions, preventing moisture ingress and light leakage while maintaining the compact form factor of the display apparatus.
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 solution effectively suppresses moisture permeation and light leakage, protecting the display panel from damage and maintaining image quality by ensuring the display module is not exposed to moisture and reducing light leakage issues.
Implementation Method 1
Moisture may permeate into the display apparatus through such a gap
Implementation Method 2
The adhesive member may be made of an opaque material
Data Source
AI summary
A display apparatus according to one embodiment may include a display module for displaying an image, a metal plate disposed behind the display module, a cover member disposed in front of the display module, and an adhesive member disposed between the display module and the metal plate, in which the adhesive member may include a protective part attached to side surfaces of the display module and having one end attached to the cover member.