Source Driving Circuit Temperature Control via Timing Controller Feedback
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Solution Overview
Problem
The increasing resolution and size of LCD devices lead to higher power consumption and elevated operating temperatures, which can damage internal components and result in abnormal display issues.
Innovation Solution
A method that includes enabling an over-temperature protection operation in the source driving circuit, where it transmits a signal to a timing controller to initiate a temperature-reducing operation when the temperature exceeds a threshold, and also involves pattern detection to reduce power consumption by controlling the gate driving circuit's activity and potentially changing polarity inversion schemes or frame rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the resolution and size of LCD devices are increased, then the display quality and coverage area are improved, but the power consumption increases and operating temperature rises
Solution Approach 1:
The patent changes operational parameters by adjusting frame rates and polarity inversion schemes based on detected temperature conditions. When temperature exceeds thresholds, the system dynamically modifies display parameters such as reducing frame rate or changing inversion patterns, thereby reducing power consumption while maintaining acceptable display performance.
2Area of stationary object
If the resolution and size of LCD devices are increased, then the display quality and coverage area are improved, but the operating temperature increases causing device damage
Solution Approach 1:
The patent implements a feedback mechanism where temperature is continuously monitored by detection circuits, and based on the detected temperature value, the control system automatically adjusts operational parameters. When temperature exceeds predetermined thresholds, the system triggers protective actions such as reducing power consumption or shutting down, creating a closed-loop temperature control system.
Solution Approach 2:
The patent applies preliminary protective measures by establishing predetermined temperature thresholds and preparing protective actions in advance. Before critical temperature damage occurs, the system proactively detects temperature trends and preemptively reduces power consumption or activates cooling measures, preventing thermal damage before it happens.
3Productivity
If continuous operation is maintained to ensure display functionality, then the display remains active, but temperature continues to rise causing abnormal display situations
Solution Approach 1:
The patent implements periodic temperature monitoring and conditional operational adjustments. Instead of continuous full-power operation, the system periodically checks temperature conditions and adjusts operation accordingly, allowing the display to remain functional while periodically reducing power consumption when temperature thresholds are exceeded, preventing thermal accumulation.
Data Source
AI summary
A method for reducing operating temperature of a source driving circuit and a display system are provided. The method for reducing operating temperature of a source driving circuit includes enabling an over-temperature protection operation by the source driving circuit; and transmitting, by the source driving circuit, a first signal to a timing controller in response to detecting a temperature increasing to be higher than the first threshold temperature, wherein the timing controller is configured to operate a temperature reducing operation in response to receiving the first signal.