Resin Cover Layer for Head-Mounted Display Protection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display devices for head-mounted display devices require high-resolution images and are prone to damage during fabrication due to the use of additional hard cover members.
Innovation Solution
A display device with a cover layer made of resin, having a smooth top surface, which surrounds the light-emitting element layer, encapsulation layer, color filter layer, and lens array layer without an additional hard cover member, and a method of fabricating the same.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If additional hard cover members are used to protect the display device, then the device structure is more robust, but the device becomes more complex and prone to damage during fabrication
Solution Approach 1:
The patent combines multiple protective functions into a single cover layer structure. The cover layer integrates both protection against external damage and fabrication process protection, eliminating the need for separate hard cover members. This merging reduces structural complexity while maintaining robustness through the inherent properties of the resin material and its integration with the lens array layer.
2Strength
If additional hard cover members are used to protect the display device, then the device structure is more robust, but the risk of damage during fabrication increases
Solution Approach 1:
The patent extracts the protective function from separate hard cover members and integrates it directly into the cover layer that is already part of the display device structure. By taking out the need for additional protective components and incorporating protection into the existing cover layer, the fabrication process becomes simpler and more reliable, reducing handling steps and potential damage points.
3Manufacturing precision
If a resin cover layer is used instead of hard cover members, then the surface quality is smoother and fabrication damage is reduced, but the protective strength may be compromised
Solution Approach 1:
The patent employs composite material strategy by integrating the resin cover layer with the lens array layer to create a unified structure. The cover layer is formed as a composite of resin material that provides smooth surface quality, and when combined with the underlying lens array layer, achieves both surface quality and protective strength. This composite approach allows the resin to provide smoothness while the integrated structure provides the necessary protective 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
The display device achieves smooth surface quality and reduces the risk of damage during fabrication, while providing high-resolution images suitable for head-mounted display devices.
Implementation Method 1
curing the resin layer to form a cover layer surrounding the light-emitting element layer, the encapsulation layer, the color filter layer, and the lens array layer in plan view
Data Source
AI summary
A display device, method of fabricating the same and head mounted display device including the same are provided. The display device includes a semiconductor substrate including a display area including transistors, and a non-display area around the display area in plan view, a light-emitting element layer above the semiconductor substrate, and including light-emitting elements in the display area, an encapsulation layer above the light-emitting element layer, a color filter layer above the encapsulation layer, and including color filters respectively overlapping the light-emitting elements, a lens array layer above the color filter layer, and including lenses in the display area, and a cover layer above the lens array layer, having flat top and side surfaces, and surrounding the light-emitting element layer, the encapsulation layer, the color filter layer, and the lens array layer in plan view.