Curved Capping Layer for High-Resolution Light-Focusing Displays
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display devices face challenges in achieving high-resolution displays with improved manufacturing efficiency, reduced costs, and enhanced display quality, particularly in head-mounted displays for virtual and augmented reality applications.
Innovation Solution
A display device design featuring a semiconductor circuit board with a capping layer made of inorganic insulating material, having a curved profile and uniform thickness, which serves as both a protective and light-focusing layer, along with a passivation layer to ensure precise alignment and improved light emission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a capping layer with curved profile is added to focus light and improve display quality, then display quality is improved, but device complexity increases
Solution Approach 1:
The capping layer is designed to simultaneously serve as both a protective layer for the common electrode and a light-focusing element with a curved profile. By merging these two functions into a single layer, the patent avoids adding separate protective and optical components, thereby improving display quality without proportionally increasing device complexity
Solution Approach 2:
The capping layer performs multiple functions: it protects the common electrode from environmental damage and degradation, provides electrical insulation, and focuses light through its curved profile to enhance display quality. This multi-functionality reduces the need for additional separate components
2Manufacturing precision
If multiple layers (capping layer, passivation layer) are added to prevent misalignment and improve manufacturing precision, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The passivation layer is formed beforehand to define precise patterns and openings that serve as alignment guides for subsequent layers. By establishing the geometric framework in advance, the patent ensures precise alignment of the capping layer and other components, reducing misalignment issues during manufacturing
Solution Approach 2:
The passivation layer acts as an intermediary between the light-emitting element and the capping layer, providing a stable reference structure with defined openings that facilitate precise alignment. This intermediate layer mediates the positioning relationship between other layers, improving overall manufacturing 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
The design reduces manufacturing costs and time while maintaining high resolution, preventing misalignment issues, and enhancing display quality by focusing light effectively.
Implementation Method 1
a capping layer above the common electrode, contacting the common electrode, and having an upper surface having a curved profile in a cross-sectional view
Data Source
AI summary
A display device according to one or more embodiments may include a semiconductor circuit board including a pixel circuit, a bonding electrode above the semiconductor circuit board, and electrically connected to the pixel circuit, a pixel electrode above the bonding electrode, and electrically connected to the bonding electrode, a light-emitting element above the pixel electrode, a common electrode above the light-emitting element, and a capping layer above the common electrode, contacting the common electrode, and having an upper surface having a curved profile in a cross-sectional view.