LED Package Recess Layout for High-Resolution Full-Color Displays
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Solution Overview
Problem
Existing display devices employing LEDs face challenges in achieving high-resolution and full-color displays with high color purity and reproducibility while requiring a simplified manufacturing process.
Innovation Solution
A light emitting device package with a base substrate and insulating members featuring recessed portions and overlapping epitaxial stacks emitting different wavelength bands, connected by electrodes, allowing for a simplified manufacturing process and high-resolution color display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple individually grown LED structures are formed on a final substrate to achieve high-resolution and full-color display, then display resolution and color capability are improved, but manufacturing process complexity increases
Solution Approach 1:
The patent divides the display device into multiple pixel units, each containing red, green, and blue light emitting diodes arranged in a specific pattern. This segmentation allows each pixel to independently control color output while maintaining high resolution across the entire display, resolving the contradiction between display resolution and manufacturing complexity.
Solution Approach 2:
The patent implements different LED structures and configurations at different locations within the display. Each pixel region has specifically tailored LED arrangements and optical structures optimized for its function, enabling high-resolution color display while simplifying the overall manufacturing process through localized optimization rather than uniform complex design.
2Adaptability or versatility
If LED structures are individually grown on final substrate to achieve full-color display, then color capability is improved, but manufacturing process simplification is hindered
Solution Approach 1:
The patent combines multiple LED growth processes into a unified manufacturing approach. By integrating the growth of red, green, and blue LEDs along with their supporting structures in a coordinated manner on the final substrate, the patent achieves full-color capability while simplifying the overall manufacturing process through consolidation of operations.
Solution Approach 2:
The patent utilizes three-dimensional spatial arrangement of LEDs and optical structures within each pixel. By stacking and positioning components in multiple dimensions rather than simple planar arrangements, the patent achieves full-color capability in a compact footprint that simplifies the manufacturing process compared to traditional two-dimensional approaches.
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 enables high-resolution, full-color displays with improved color purity and efficiency by integrating multiple color-emitting LEDs in a compact structure, simplifying the manufacturing process and enhancing light emission control.
Implementation Method 1
a light emitting structure disposed on the substrate and configured to emit light in a direction away from the base substrate
Data Source
AI summary
A display device including a base substrate having a front surface and a rear surface, and including a first recess portion recessed from the front surface, a plurality of outer electrodes disposed on the base substrate, a light emitting device disposed in the first recess portion and configured to emit light in a direction away from the base substrate, the light emitting device including a light emitting structure electrically connected to the outer electrodes.