LED Light Mixing Control for Real-Time Color Calibration
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Solution Overview
Problem
The current LED production process is time-consuming and costly due to the need for separate classification and screening of LEDs by color, leading to inventory accumulation and increased component screening costs.
Innovation Solution
A light-emitting diode device that integrates a storage module for pre-storing color and brightness reference information, a control module for generating control signals based on user requirements, and a driving module for real-time adjustment of LED output to meet color and brightness specifications, eliminating the need for advance classification and screening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If LEDs are classified into different bins according to photoelectric characteristics in advance, then color calibration can be achieved, but the classification process is time-consuming and increases cost burden
Solution Approach 1:
The system pre-stores color coordinate reference information and brightness reference information corresponding to different current/voltage values of LEDs in a storage module. This preliminary storage of reference data enables real-time color calibration without requiring time-consuming advance classification of LEDs into bins, thus resolving the contradiction between achieving color calibration and reducing classification time
Solution Approach 2:
The patent replaces the traditional mechanical classification process (manual or automated sorting of LEDs into bins based on photoelectric characteristics) with an electronic control system. The control module reads pre-stored reference information and generates control signals to adjust LED output, substituting physical sorting with electronic control and data processing, thereby eliminating time-consuming classification while maintaining color calibration accuracy
2Manufacturing precision
If LEDs are classified separately by color in advance, then desired light color can be achieved through light mixing, but component screening costs increase and inventory accumulation occurs
Solution Approach 1:
The storage module stores reference information for multiple colors and brightness levels in a single integrated structure, making the system universal and multi-functional. Instead of requiring separate screening and storage for red, green, and blue LEDs, the system can handle all colors through electronic control based on pre-stored reference data, reducing component screening costs while maintaining light color accuracy
Solution Approach 2:
The system changes the approach from classifying LEDs by fixed physical characteristics into rigid bins to dynamically adjusting LED output parameters (current/voltage) based on pre-stored reference information. This parameter-based control allows flexible color mixing without advance classification, reducing screening costs and preventing inventory accumulation of unused LEDs
3Manufacturing precision
If advance classification and selection of LEDs is performed, then appropriate LEDs can be selected for packing, but production yield decreases due to time-consuming processes
Solution Approach 1:
The patent replaces the mechanical process of selecting and sorting LEDs into bins with an electronic control system that reads pre-stored reference information and generates control signals. This substitution eliminates time-consuming classification steps while maintaining LED selection accuracy, thereby improving production yield without sacrificing manufacturing precision
Solution Approach 2:
The reference information for LED control is pre-stored in the storage module during manufacturing or setup. This preliminary action allows the control module to quickly retrieve and apply appropriate control parameters during production, eliminating the need for time-consuming classification and selection processes while maintaining accurate LED selection, thus improving production yield
Data Source
AI summary
A light-emitting diode device includes light-emitting diodes, a storage module, a control module, a driving module, and a package structure. The light-emitting diodes emit different colors of light. The storage module pre-stores color coordinate reference information and brightness reference information corresponding to a current/voltage of the light-emitting diodes. The control module receives the color coordinate reference information and the brightness reference information corresponding to the light-emitting diodes, and uses the color coordinate reference information, the brightness reference information, the color coordinate requirement information, and the brightness requirement information according to a light mixing algorithm to generate a first control signal. The driving module generates a driving signal according to the first control signal to drive the light-emitting diodes to emit a light having a color coordinate and brightness that meet requirements. The package structure accommodates the light-emitting diodes, the storage module, the control module, and the driving module.