Light-emitting Module Driving Method for Spectrum Accuracy
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Solution Overview
Problem
Manufacturing light-emitting modules with specific emission spectra using LEDs or other efficient light-emitting units is time-consuming and prone to emission spectrum shifts due to light decay, requiring an efficient method to calculate driving current values automatically.
Innovation Solution
A driving method for light-emitting modules computes driving currents for each unit based on a target spectrum and emission spectra, using a processing unit to adjust power parameters and determine optimal current values that minimize emission-spectrum error, ensuring the combined light emission approximates the target spectrum.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If repeated trials and errors by engineers with simulations are used to obtain an acceptable emission spectrum, then the emission spectrum can be optimized, but the design process costs a lot of time
Solution Approach 1:
The patent replaces the mechanical trial-and-error process with an automated computational system. A processing unit automatically calculates driving current values based on target spectrum and emission spectrum data, eliminating the need for manual simulation iterations and significantly reducing design time while maintaining spectral accuracy.
Solution Approach 2:
The system enables self-service by automatically computing optimal driving currents without requiring engineer intervention. The processing unit independently analyzes emission spectrum characteristics and determines the precise current values needed to achieve the target spectrum, making the design process autonomous and efficient.
2Use of energy by moving object
If LEDs or other highly efficient light-emitting units are used to manufacture light-emitting modules, then light emission efficiency is improved, but emission spectrum shifts occur due to light decay over time
Solution Approach 1:
The patent implements feedback by continuously monitoring the actual emission spectrum and using this information to adjust driving current values. The system stores emission spectrum data, compares it with target spectrum, and automatically recalculates optimal currents to compensate for light decay, maintaining spectral stability over time.
Solution Approach 2:
The system transitions from static to dynamic operation by enabling real-time adjustment of driving currents based on actual emission spectrum measurements. This dynamic adaptation allows the light-emitting module to maintain optimal performance characteristics even as components age and their emission properties change.
3Loss of time
If automated computation of driving currents is implemented, then design time is reduced, but device complexity increases due to additional processing requirements
Solution Approach 1:
The processing unit is designed to perform multiple functions: storing emission spectrum data, calculating driving current values, controlling light-emitting units, and adapting to spectral changes over time. This multi-functionality consolidates what could be separate complex systems into a single integrated unit, reducing overall device complexity while maintaining automated computation capabilities.
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
This method allows for efficient computation of driving currents that maintain the target emission spectrum, even with light decay, by dynamically updating power parameters and adjusting current values, thus reducing the time and cost associated with achieving desired light emission characteristics.
Implementation Method 1
Light-emitting modules composed of light-emitting diodes (LEDs) or other highly efficient light-emitting units
Data Source
AI summary
A light-emitting module and a driving method thereof are disclosed. In this method, P light-emitting units are selected as a target group, wherein each of the P light-emitting units has N different power parameters corresponding to N sub-bands. P evaluated current values corresponding to the P light-emitting units are computed according to a target spectrum and the N×P power parameters corresponding to the P light-emitting unit in the target group. An emission-spectrum error is computed according to the target spectrum, the N×P power parameters, and the P evaluated current values. It is determined whether the emission-spectrum error conforms with the determining criteria. When the emission-spectrum error conforms with determining criteria, the P evaluated current values are set to be P driving current values corresponding to the P light-emitting units.