Display Driving Circuit Thermal Feedback Control
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Solution Overview
Problem
As display panel sizes increase and demand for higher resolution and refresh rates grows, the power consumption of source drivers also increases, leading to elevated temperatures that can damage the source driver if it exceeds a certain threshold.
Innovation Solution
A display driving circuit that includes a temperature detecting circuit and a timing control circuit, where the timing control circuit adjusts the voltage of the source signal based on the temperature of the source driver, outputting a lower voltage when the temperature is high to prevent damage and reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the source driver operates at high power to support larger display panels and higher resolution, then the display performance is improved, but the temperature of the source driver increases and may exceed the threshold causing damage
Solution Approach 1:
The patent implements a temperature detection feedback mechanism where a temperature detection circuit continuously monitors the source driver temperature and sends signals to the timing control circuit. When the temperature exceeds a preset threshold, the timing control circuit adjusts the source signal voltage accordingly, creating a closed-loop feedback system that prevents overheating while maintaining display performance
Solution Approach 2:
The patent dynamically changes the voltage parameter of the source signal based on temperature conditions. The timing control circuit adjusts the voltage magnitude of the source signal according to the detected temperature, using different voltage levels (first voltage level for normal temperature, second voltage level for high temperature) to control the source driver operating parameters and prevent thermal damage
2Productivity
If the source driver operates at high power to support larger display panels and higher resolution, then the display performance is improved, but the power consumption increases
Solution Approach 1:
The patent introduces dynamic power management by making the source signal voltage adjustable based on real-time temperature conditions. The timing control circuit dynamically switches between different voltage levels for the source signal, allowing the source driver to operate at higher power when cool and reduce power consumption when temperature rises, creating a dynamic balance between performance and energy usage
Data Source
AI summary
A display driving circuit is provided. The display driving circuit includes a source driver, a temperature detecting circuit, and a timing control circuit, wherein the temperature detecting circuit is connected to the timing control circuit, and is configured to detect a temperature of the source driver; and the timing control circuit is further connected to the source driver, and is configured to output a source signal to the source driver based on the temperature of the source driver; wherein a magnitude of a voltage of the source signal is negatively related to the temperature of the source driver.