Integrated LED Package Structure for Full-Color Display Manufacturing
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Solution Overview
Problem
Current display devices using light emitting diodes (LEDs) face challenges in achieving high-resolution and full-color displays with high color purity and reproducibility, particularly in manufacturing processes that are complex and inefficient.
Innovation Solution
A light emitting device package is designed with a simple structure, featuring a base substrate, epitaxial stacks emitting different wavelength bands, and a unique configuration of bump and outer electrodes, along with insulating members and a cover member, to facilitate simplified manufacturing and enhanced light emission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If individual red, green, and blue light emitting diodes are grown and assembled separately, then full-color display capability is achieved, but manufacturing process complexity increases
Solution Approach 1:
The patent combines multiple light emitting diodes (red, green, and blue) into a single integrated device structure. The LEDs are grown together on a common substrate with shared electrode structures, eliminating the need for separate growth and assembly processes for each color LED, thus reducing manufacturing complexity while maintaining full-color display capability
Solution Approach 2:
The patent creates a universal light emitting device structure that can produce multiple colors (red, green, blue) through a single integrated design. The device includes multiple active regions within one semiconductor structure that can emit different wavelengths, allowing one device to perform the function of multiple separate LEDs
2Adaptability or versatility
If multiple separate LED structures are assembled, then color variety is achieved, but assembly complexity and time increase
Solution Approach 1:
The patent performs preliminary integration by growing all LED structures (red, green, blue) simultaneously on a single substrate during the semiconductor fabrication process. The electrodes and active regions are formed in advance as part of the growth process, eliminating subsequent assembly steps and significantly improving production efficiency while maintaining color variety
3Manufacturing precision
If complex multi-LED structures are used, then color purity may be improved, but manufacturing simplicity is reduced
Solution Approach 1:
The patent applies local quality by creating distinct active regions within the single LED structure, where each region is optimized for a specific wavelength (red, green, or blue). The electrode structures are also locally configured to match each active region, ensuring high color purity for each emitted wavelength while maintaining overall manufacturing simplicity through the integrated design
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 the production of high-resolution, full-color displays with improved color purity and reproducibility, while simplifying the manufacturing process and reducing the complexity of individual light emitting device assembly.
Implementation Method 1
epitaxial stacks sequentially stacked on the substrate and configured to emit light having different wavelength bands from each other
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.