Array Substrate Layout With Sensor Terminals for MiniLED Brightness Control
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Solution Overview
Problem
Existing MiniLED and MicroLED technologies face challenges in efficiently monitoring and controlling the light-emitting conditions of individual elements within display devices, leading to potential overheating, brightness inconsistencies, and system instability.
Innovation Solution
An array substrate design featuring separate conductive layers with integrated sensor terminals and signal lines, allowing for precise monitoring and control of light-emitting elements through sensors, which include temperature and photosensitive sensors to adjust parameters like voltage and brightness, and a structured layout for efficient signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensors are integrated on the array substrate to monitor light-emitting elements, then the monitoring precision and control capability are improved, but the device complexity increases due to additional sensor terminals and signal lines
Solution Approach 1:
The patent integrates sensor terminals and signal lines directly onto the array substrate, merging the monitoring function with the existing display structure. This combination allows temperature and photosensitive sensors to be embedded within the substrate layers, enabling precise monitoring of light-emitting elements without requiring separate external monitoring systems, thus improving measurement precision while managing device complexity through integrated design
Solution Approach 2:
The array substrate is designed to serve multiple functions simultaneously: it acts as both the structural base for light-emitting elements and the integration platform for sensor terminals and signal lines. This multi-functionality allows the substrate to support both display operations and environmental monitoring (temperature, light intensity) within a single component, reducing the need for additional separate systems
2Ease of operation
If separate conductive layers with sensor terminals are added to the array substrate, then the control capability over light-emitting elements is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent divides the conductive structure into multiple separate layers, with sensor terminals and signal lines positioned on different conductive layers. This segmentation allows for modular manufacturing processes where each layer can be prepared and positioned independently, facilitating precise control capability while managing manufacturing complexity through standardized layer-by-layer fabrication techniques
Solution Approach 2:
The patent transitions from planar arrangement to three-dimensional layered structure by positioning sensor terminals and signal lines on different conductive layers at different heights. This dimensional change enables complex control capabilities to be achieved through vertical stacking rather than horizontal expansion, allowing for better control while managing manufacturing through established multi-layer deposition and alignment processes
3Reliability
If sensors are placed to monitor each light-emitting element, then the reliability of the display system is improved, but the area occupied on the substrate increases
Solution Approach 1:
The patent embeds sensor terminals within the existing substrate structure and conductive layers, nesting the monitoring function inside the display structure rather than adding external components. This nesting approach allows temperature and photosensitive sensors to be positioned within or alongside the light-emitting element structures, enabling comprehensive monitoring for improved reliability while minimizing additional substrate area through space-efficient integrated placement
Data Source
AI summary
The present disclosure relates to the field of display, and provides an array substrate, a light-emitting substrate, and a display device. The array substrate includes: a base substrate; a first conductive layer and a second conductive layer, stacked on the base substrate and insulated from each other; a plurality of groups of light-emitting element terminals, arranged in an array on the second conductive layer for coupling with light-emitting elements; a plurality of groups of sensor terminals, arranged on the second conductive layer for coupling with sensors.