Display Control Circuit Dynamic Refresh Rate Thermal Management
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Solution Overview
Problem
Conventional display devices face challenges in managing high temperatures in source drivers due to increased power consumption with higher frame rates and resolutions, leading to potential malfunctions.
Innovation Solution
A display device with a control circuit that dynamically adjusts the refresh frame rate, allowing the device to switch between normal and low power modes based on temperature thresholds, reducing the frequency of capacitor charging in source drivers and thus lowering temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the refresh frame rate is increased to improve display smoothness, then the display quality is improved, but the power consumption of source drivers increases leading to high temperature
Solution Approach 1:
The patent implements dynamic adjustment of the refresh frame rate based on real-time temperature monitoring of source drivers. The system transitions between a first refresh frame rate (normal operation) and a second refresh frame rate (reduced operation) depending on whether the temperature exceeds a threshold, thereby dynamically optimizing both display performance and thermal management
Solution Approach 2:
The patent changes the operational parameters of the display system by adjusting the refresh frame rate from a first value to a second value based on temperature conditions. This parameter change directly controls the charging frequency of pixel capacitors, thereby managing power consumption and temperature without altering the fundamental display architecture
2Duration of action of stationary object
If the refresh frame rate is increased to maintain continuous smooth display, then the display continuity is improved, but the power consumption increases causing thermal issues
Solution Approach 1:
The patent employs periodic monitoring of source driver temperature and periodically adjusts the refresh frame rate accordingly. The system alternates between normal and reduced frame rates in response to temperature cycles, maintaining display continuity while managing energy consumption through rhythmic adaptation rather than continuous high-rate operation
3Manufacturing precision
If high frame rate and high resolution are used to improve image quality, then the video quality is improved, but the source drivers generate excessive heat causing malfunctions
Solution Approach 1:
The patent implements a feedback control mechanism where temperature sensors continuously monitor source driver temperature and feed this information back to the control circuit. Based on this feedback, the system automatically adjusts the refresh frame rate to prevent overheating, thereby maintaining both image quality and source driver reliability through closed-loop thermal management
Data Source
AI summary
A display device, a control circuit and associated control method are provided. The display device includes the control circuit and a display panel. The control circuit receives a plurality of source frames with a source frame rate. The control circuit generates a plurality of data signals and a plurality of gate signals based on the plurality of source frames. The display panel is electrically connected to the control circuit. The display panel displays the plurality of output frames according to the plurality of data signals and the plurality of gate signal. The plurality of output frames are displayed with one of a first refresh frame rate and a second refresh frame rate. The source frame rate is equivalent to the first refresh frame rate, and the source frame rate is greater than the second refresh frame rate.