Display Panel Edge Coating to Block Debris and Absorb Impact
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Solution Overview
Problem
Display devices are prone to defects caused by foreign matters and lack sufficient impact resistance, which existing technologies have not adequately addressed.
Innovation Solution
A display device design featuring a display panel with defined regions, a window module, and a coating member that covers the side surfaces of both the display panel and window module, with the coating member connected to a lower substrate, using a resin material and particles like urethane or acrylic to fill step regions and enhance adhesion and protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the window module side surface is disposed more inwardly than the display panel side surface, then the structural complexity is reduced and manufacturing is simplified, but a step region is created that can trap foreign matters and reduce impact resistance
Solution Approach 1:
The patent introduces a coating member as an intermediary substance that fills the step region between the window module and display panel. This coating member has adhesive properties that bond to both surfaces, creating a continuous protective layer that eliminates the harmful step gap while maintaining the simplified inward disposition structure for ease of manufacture.
Solution Approach 2:
The patent changes the physical parameters of the interface region by applying a coating member with specific adhesive characteristics. This coating member modifies the surface properties and fills the volumetric gap, transforming the problematic step region into a bonded, foreign-matter-resistant interface while preserving the original structural arrangement.
2Strength
If a coating member is applied to cover side surfaces and fill step regions, then adhesion and impact resistance are improved, but the device complexity increases due to additional manufacturing steps
Solution Approach 1:
The coating member serves multiple functions simultaneously: it acts as an adhesive to bond components, as a protective layer to resist impacts and scratches, and as a filler to eliminate step regions. This multi-functionality justifies the additional manufacturing step by delivering multiple performance benefits from a single material application.
Solution Approach 2:
The patent employs a coating member that is a composite material containing resin and particles. This composite structure provides enhanced mechanical properties including improved adhesion, impact resistance, and scratch resistance, achieving superior strength characteristics that justify the additional manufacturing complexity.
3Reliability
If the coating member includes resin and particles with adhesive properties, then adhesion between components is enhanced, but the material complexity and manufacturing precision requirements increase
Solution Approach 1:
The patent specifies particular parameter ranges for the coating member including resin type, particle composition, particle size distribution, and viscosity. By controlling these parameters within defined ranges, the coating achieves optimal adhesive properties and fill capabilities while maintaining manufacturability through standardized material specifications.
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 effectively reduces defects from foreign matters and improves impact resistance by enhancing the adhesion between components and providing improved anti-scratch and anti-impact characteristics, while maintaining flexibility to prevent separation during folding operations.
Implementation Method 1
a coating member which fills a step region defined by a side surface of the display panel and a side surface of the window module
Implementation Method 2
The coating member may include a resin material and a plurality of particles. The resin material may include urethane or acrylic
Data Source
AI summary
A display device includes a display panel in which a first region, a second region, and a third region are defined along a first direction, a window module disposed on the display panel, and including a window substrate, a coating member covering a side surface of the display panel and a side surface of the window module, and a lower substrate disposed under the display panel. A side surface of the window substrate is disposed more inwardly than the side surface of the display panel is, and a side surface of the coating member is connected to the lower substrate.