LED Display Panel Row Driving Layout for Transistor Heat Control
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Solution Overview
Problem
The excessive temperature rise in row transistors of LED display screens due to high driving currents affects the light-emitting efficiency and service life of LED elements, leading to color temperature deviations.
Innovation Solution
A display panel design with dual row driving modules and a control module that alternates or simultaneously operates decoders and transistors to disperse heat, using detection modules to manage heat distribution and ensure stable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single row driving module is used to drive LED light-emitting elements, then the device complexity is reduced, but the row transistor generates excessive heat causing temperature rise
Solution Approach 1:
The patent divides the single row driving module into two separate row driving modules (first row driving module and second row driving module), each with its own row transistor column and decoder. This segmentation allows the driving function to be distributed across multiple transistors, reducing the current load and heat generation of each individual transistor while maintaining the overall driving capability.
2Productivity
If the row transistor drives large current for long time, then the productivity is improved, but the service life of row transistor and LED elements deteriorates
Solution Approach 1:
The patent implements periodic switching between the first and second row driving modules. The control module alternately activates the two decoders, enabling one module to work while the other rests or works at reduced load. This periodic action allows heat dissipation during transition periods and prevents continuous high-current operation, thereby extending the service life of the transistors and LED elements while maintaining overall productivity.
3Use of energy by moving object
If the row transistor temperature rises excessively, then the light-emitting efficiency is improved initially, but the color temperature stability deteriorates
Solution Approach 1:
The patent incorporates a control module that monitors and manages the operation of the two row driving modules. By implementing control logic that switches between modules based on their operational state, the system provides feedback-based temperature management. This ensures that no single transistor operates continuously at high temperature, thereby maintaining both light-emitting efficiency and color temperature stability through dynamic adjustment of module activation.
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
The solution effectively stabilizes operating temperatures, improving the service life of row transistors and LED elements by dispersing heat and preventing color temperature deviations.
Implementation Method 1
The control module is used to control one of the first decoder and the second decoder to operate or to control both to operate simultaneously... effectively stabilizes operating temperatures... by dispersing heat
Data Source
AI summary
A display panel includes a first row driving module, a second row driving module, and a control module. The first row driving module is arranged on one side of the base plate, and includes a first row transistor column and a first decoder that are connected. Multiple first pins are arranged on the first row transistor column, and are each connected to a respective row of LEDs. The second row driving module is arranged on the other side of the base plate, and includes a second row transistor column and a first decoder that are connected. Multiple second pins are arranged on the second row transistor column, and are each connected to a respective row of LEDs. The control module is connected to the first and the second row driving module, and controls one of the first and the second decoder to operate or both to operate simultaneously.