Segmented Vehicle Headlamp Light Source With Simplified Region Control
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Solution Overview
Problem
Current light-emitting devices for vehicles face challenges in optimizing operation and cost, particularly in harmonizing with vehicle characteristics, and there is a need for a simpler and more cost-effective manufacturing process that reduces the burden of controlling each light-emitting region.
Innovation Solution
A light-emitting device design featuring contiguously arranged first and second light-emitting regions, with a driver controller that can simultaneously control the emission of multiple regions, allowing for independent or simultaneous on/off operations, and a manufacturing process that optimizes the dimensions and layout for reduced complexity and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If each light-emitting region is controlled independently with fine granularity, then light management precision is improved, but control complexity and operational burden increase
Solution Approach 1:
The light-emitting device is divided into multiple independently controllable light-emitting regions, each capable of being turned on or off separately. This segmentation allows precise control of different lighting zones (e.g., high beam, low beam, daytime running lights) without requiring complex continuous dimming control, achieving light management precision through spatial segmentation rather than intensity modulation.
Solution Approach 2:
The patent implements dynamic control of light-emitting regions by allowing the controller to selectively activate or deactivate specific regions based on driving conditions. This dynamic on/off switching provides adaptable lighting patterns (e.g., switching between high and low beams) with simple binary control states, reducing operational burden while maintaining precision.
2Adaptability or versatility
If multiple light-emitting regions are controlled with fine granularity, then lighting functionality is improved, but manufacturing complexity and cost increase
Solution Approach 1:
Multiple light-emitting regions are integrated into a single semiconductor light-emitting device structure, sharing common substrates, electrodes, and packaging. This merging approach enables diverse lighting functionality (different beam patterns, colors, and modes) from a unified device architecture, reducing manufacturing complexity compared to assembling separate light sources.
Solution Approach 2:
The semiconductor light-emitting device is designed with multi-functionality, where a single device structure can produce multiple lighting patterns and functions by controlling different light-emitting regions. This universal design allows the same device to serve as headlamp, daytime running light, turn signal, or brake light, reducing the need for multiple specialized components and simplifying manufacturing.
3Reliability
If light-emitting regions are controlled with high precision, then driving safety is improved, but operational burden increases
Solution Approach 1:
The lighting system implements self-service control where the controller automatically selects and activates appropriate light-emitting regions based on detected driving conditions (e.g., oncoming traffic, road curvature, weather). This eliminates the need for manual intervention to switch between lighting modes, reducing operational burden while maintaining high driving safety through precise, context-aware light management.
Data Source
AI summary
A light-emitting device includes a plurality of first light-emitting regions contiguously arranged in a first direction. Each of the first light-emitting regions includes at least one light-emitting cell. A plurality of second light-emitting regions are contiguously arranged in the first direction. Each of the second light-emitting regions includes at least one light-emitting cell. The plurality of second light-emitting regions are adjacent to the plurality of first light-emitting regions in a second direction that intersects the first direction. A first driver controller controls emission of the plurality of first light-emitting regions. Each of the first light-emitting regions has a greater dimension than each of the second light-emitting regions in the second direction. The first driver controller simultaneously turns on or off an entirety of each of the first light-emitting regions.