LED Display Redundancy via Spare Chips and Wavelength Conversion
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Solution Overview
Problem
Conventional LED units lack redundancy and fail-safe mechanisms to maintain functionality when individual LED chips fail, leading to potential disruptions in lighting displays.
Innovation Solution
The integration of preparative LED chips that can replace failing working LED chips, with adjustable wavelength conversion materials and rewiring capabilities to ensure continuous operation, allowing for individual control and color adjustment of LED units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional LED units are used without redundancy, then device complexity is reduced, but reliability deteriorates when individual LED chips fail
Solution Approach 1:
The patent incorporates spare LED chips into the LED unit before they are needed, allowing immediate replacement of failed chips without requiring external intervention or complex repair procedures. This preliminary preparation of replacement components resolves the contradiction by ensuring reliability through pre-positioned redundancy while maintaining relatively simple device structure.
Solution Approach 2:
The patent employs wavelength conversion materials that can be adjusted to match the optical characteristics of failed LED chips. By changing the wavelength conversion parameters, the spare chips can be adapted to replace different types of failed chips, thereby improving reliability while minimizing the number of different chip types needed and keeping the overall structure relatively simple.
2Reliability
If spare LED chips are integrated into the LED unit, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple functions into the spare LED chips: they serve as both operational light-emitting components and as replacement units for failed chips. The wavelength conversion materials are integrated directly into the chip structure, merging the replacement function with the light-emitting function. This consolidation improves operational continuity while avoiding the need for separate replacement mechanisms that would increase configuration complexity.
3Adaptability or versatility
If wavelength conversion materials are used for color adjustment, then adaptability is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent utilizes wavelength conversion materials whose optical properties can be adjusted by changing material composition or structural parameters. This allows the same basic chip design to be adapted for different color outputs by modifying conversion parameters rather than requiring precision manufacturing of different chip types, thereby improving adaptability while managing manufacturing precision requirements.
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
Enables the LED unit to maintain normal operation even when working LED chips fail, ensuring consistent lighting with minimal disruption and adjustable color output.
Implementation Method 1
The light radiation theory of light emitting diode (LED) is to generate light from the energy released by the electron moving between an n-type semiconductor and a p-type semiconductor
Implementation Method 2
a wavelength conversion material, such as phosphor can be added inside or on the lens 32 to change the emitting color of the LED chips 30
Data Source
AI summary
An LED display comprises a first end providing a current, a second end receiving the current, a first LED chip, electrically connected between the first end and the second end, emitting a first light, and a second LED chip, emitting a second light, electrically connected to the first end and is insulated from the second end. The current flows from the first end and through the first LED chip to the second end.