Embedded ESD Carrier for Multi-LED Mobile Camera Modules
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Solution Overview
Problem
Existing multi-LED systems for mobile applications face challenges in size reduction and integration of components, leading to issues with light color and intensity changes due to external components, and inadequate protection against electrostatic discharges.
Innovation Solution
A multi-LED system with a carrier having a main body made of resin or polymer material, embedding ESD protection components and a temperature sensor, featuring upper and lower metallizations for efficient component connection via vias, which reduces module size and enhances light output and color quality while providing protection against electrostatic discharges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If discrete varistor components are used to protect LEDs from electrostatic discharges, then ESD protection is improved, but installation size increases
Solution Approach 1:
The patent combines multiple functions (ESD protection, light conversion, LED mounting) into a single integrated carrier structure. The varistor function is integrated into the carrier substrate rather than using separate discrete components, thereby reducing the overall installation area while maintaining ESD protection capability.
Solution Approach 2:
The carrier serves multiple functions simultaneously: it provides mechanical support for LEDs, integrates ESD protection through varistor elements, enables light conversion via phosphor layers, and provides electrical connections. This multi-functionality eliminates the need for separate discrete components for each function.
2Reliability
If multiple discrete components are arranged on the carrier, then ESD protection and temperature monitoring are improved, but device complexity and size increase
Solution Approach 1:
Multiple functional components (varistors for ESD protection, temperature sensors, LED mounts) are merged into a single carrier structure. The carrier integrates these elements rather than arranging them as separate discrete components, reducing device complexity while maintaining all protective and monitoring functions.
3Reliability
If external components are placed on the carrier, then ESD protection is provided, but light color and intensity consistency deteriorates
Solution Approach 1:
The ESD protection elements are merged into the carrier substrate itself rather than placed as external components. This integration ensures that no external components interfere with the light path, maintaining consistent light color and intensity while providing necessary ESD protection.
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 significantly reduces module size, increases flash power, maintains consistent light color and intensity, and protects against electrostatic discharges, improving light output and color quality in mobile camera applications.
Implementation Method 1
a plurality of light-emitting diodes arranged on the carrier
Implementation Method 2
The LEDs are covered, for example, by light-conversion layers such that, for example, a combination of warm-white light and cold-white light is produced
Data Source
AI summary
A multi-LED system includes a carrier; and a plurality of light-emitting diodes arranged on the carrier, wherein the carrier has a main body, and a plurality of electrical components are embedded in the main body.