Display Device Bypass Unit for Series Light-Emitting Modules
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Solution Overview
Problem
In display devices with light-emitting units connected in series, if one unit fails, the entire light-emitting group may not function, leading to a loss of light-emitting capability.
Innovation Solution
Incorporating a bypass unit with switch units connected in parallel to the light-emitting unit group, allowing for current bypass when a light-emitting unit fails, ensuring that normal units can continue to emit light by providing alternative current paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If light-emitting units are connected in series to form a light-emitting unit group, then the light-emitting function is provided, but when one unit fails, the entire group stops functioning
Solution Approach 1:
The bypass unit is divided into multiple first switch units, with each first switch unit corresponding to a specific light-emitting unit. This segmentation allows individual bypass paths to be activated selectively based on which light-emitting unit fails, rather than requiring a complete system redesign.
Solution Approach 2:
The first switch units act as intermediary components between the light-emitting units and the bypass paths. When a light-emitting unit fails, the corresponding first switch unit activates to provide an alternative current path, effectively mediating the failure impact and preventing it from affecting the entire series circuit.
2Reliability
If a bypass unit with multiple first switch units is added to provide alternative current paths, then reliability improves when units fail, but device complexity increases
Solution Approach 1:
The bypass unit serves multiple functions: it provides alternative current paths when light-emitting units fail, maintains the series connection structure for normal operation, and enables selective bypass activation through control signals. This multi-functionality reduces the need for separate systems for each purpose.
Solution Approach 2:
The bypass paths are pre-configured in the circuit structure, with each first switch unit positioned to bypass its corresponding light-emitting unit. This preliminary arrangement ensures that when a failure occurs, the bypass path is already in place and only requires activation, rather than requiring complex real-time reconfiguration.
3Productivity
If bypass paths are pre-configured for each light-emitting unit, then quick failover is achieved, but manufacturing complexity increases
Solution Approach 1:
The manufacturing process is segmented into modular steps, with each first switch unit and its corresponding bypass path being prepared as a discrete module. This segmentation allows for standardized manufacturing of individual units that can be assembled systematically, reducing overall manufacturing complexity despite the increased number of components.
Data Source
AI summary
A display device is provided. The display device includes a plurality of light-emitting modules. The at least one of the plurality of light-emitting modules includes a light-emitting unit group. The light-emitting unit group includes a plurality of light-emitting units coupled to each other in series. The first current source is coupled to the light-emitting unit group, and configured to provide a first current to drive the plurality of light-emitting units. The bypass unit includes a plurality of first switch units. The bypass unit is coupled to the light-emitting unit group in parallel. The plurality of first switch units are coupled to the plurality of light-emitting units in parallel.