Vertically Stacked Semiconductor Light Modules for Vehicle Lamps
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Solution Overview
Problem
Current vehicle lamps using package-type LEDs face challenges with low yield, high cost, and limited flexibility, and lack the ability to selectively light or change light colors and directions effectively.
Innovation Solution
A vehicle lamp design featuring vertically stacked semiconductor light emitting modules with partition walls and electrode lines, allowing for selective lighting and color control, and the use of a polarized beam splitter and light mixing layer to direct light beams appropriately.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If package-type light emitting diodes are used in vehicle lamps, then the lighting function is achieved, but the yield is low, the cost is high and the degree of flexibility is low
Solution Approach 1:
The invention divides the light emitting device into multiple independent semiconductor light emitting modules (first, second, and third modules) that can be manufactured separately and then assembled. Each module contains specific semiconductor light emitting devices (red, green, blue LEDs) that can be produced using standardized semiconductor manufacturing processes, thereby increasing yield and reducing cost while maintaining functionality.
Solution Approach 2:
The patent creates a universal modular architecture where each semiconductor light emitting module can serve multiple functions. The modules can be selectively activated to provide different lighting modes (white light for illumination, colored light for signaling), and can be controlled independently to achieve various lighting patterns including sequential lighting, simultaneous lighting, and flickering effects.
2Adaptability or versatility
If a structure capable of selectively lighting portions of the lamp is developed, then intelligent lamp functions are achieved, but light beams from multiple light emitting devices may interfere with each other
Solution Approach 1:
The invention introduces partition walls that physically divide the lamp into distinct regions, each containing specific semiconductor light emitting devices. These partition walls prevent light beams from different devices from interfering with each other, enabling selective lighting of different portions of the lamp without optical interference between adjacent light sources.
Solution Approach 2:
The patent implements local quality control by assigning different functional characteristics to different regions of the lamp. Each partitioned region can be independently controlled to emit specific colors or patterns, allowing localized lighting functions while preventing light interference between regions through the partition wall structure.
3Productivity
If multiple semiconductor light emitting devices are stacked vertically, then manufacturing efficiency is enhanced, but the structure becomes more complex
Solution Approach 1:
The invention segments the vertically stacked structure into standardized modules that can be manufactured using conventional semiconductor processes. Each module contains a controlled number of light emitting devices arranged in a regular pattern with partition walls, reducing the complexity of individual manufacturing steps while enabling efficient vertical stacking to increase overall productivity.
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 design enhances manufacturing efficiency, reduces costs, and enables selective lighting and color variation, improving both driver visibility and communication with pedestrians through precise light direction and color control.
Implementation Method 1
A vehicle lamp using a plurality of semiconductor light emitting modules vertically stacked with each other... each module having a plurality of semiconductor light emitting devices... converting current into light
Implementation Method 2
a polarized beam splitter and light mixing layer to direct light beams appropriately
Data Source
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AI summary
The present invention relates to a vehicle lamp and a method for controlling the same and in more particularly to a vehicle lamp using a semiconductor light emitting device. The present invention provides a vehicle lamp, comprising: a plurality of semiconductor light emitting modules vertically stacked with each other and having a substrate and a plurality of semiconductor light emitting devices disposed on the substrate; and partition walls formed between the semiconductor light emitting devices and passing through each of the semiconductor light emitting modules in a thickness direction, wherein each of the light emitting modules has the semiconductor light emitting devices that emit different wavelengths of light.