Timing Controller Signal Grounding for Low-Power Source Drivers
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Solution Overview
Problem
The existing display devices face high power consumption in the drive circuit due to continuous data transmission between the timing controller and the source driver chips, necessitating a solution to reduce energy usage.
Innovation Solution
A timing controller is designed to control the source driver chips to enter a low power consumption mode during specific phases by grounding the signal output terminals and adjusting the resistance of pull-down resistors, followed by a low power consumption wakeup mode to minimize data transmission during idle periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous data transmission is maintained between timing controller and source driver chips, then data integrity and real-time display performance are ensured, but power consumption increases significantly
Solution Approach 1:
The patent implements periodic action by enabling the source driver chip to alternate between working mode and low power consumption mode. During horizontal blanking periods and stable display phases, the chip enters low power mode with minimal data transmission, while activating during vertical blanking periods or when display content changes. This periodic switching reduces overall power consumption while maintaining display reliability.
Solution Approach 2:
The patent applies dynamics by making the data transmission state adaptable rather than static. The source driver chip dynamically switches between full transmission mode and low power mode based on real-time detection of display content changes. This dynamic adjustment allows the system to optimize power consumption without compromising data integrity when changes occur.
2Use of energy by moving object
If the source driver chip enters low power consumption mode by grounding signal input terminals, then power consumption is reduced, but the chip must be woken up requiring additional control mechanisms
Solution Approach 1:
The patent implements self-service by enabling the source driver chip to autonomously detect whether display content has changed and automatically switch between working mode and low power consumption mode. The chip monitors its own input signals and makes independent decisions about power state transitions, eliminating the need for complex external control circuits to manage power saving operations.
Solution Approach 2:
The patent applies feedback mechanisms where the source driver chip continuously monitors its input signal state and uses this feedback to determine whether to remain in working mode or transition to low power mode. The detection of stable or unchanged signals triggers the power saving state, while detection of changes wakes the chip back to full operation, creating a self-regulating feedback loop.
Data Source
AI summary
A drive control method applicable to a timing controller and a drive circuit are provided. The timing controller includes: M signal output terminals, wherein the M signal output terminals are respectively connected to M signal input terminals corresponding to M source driver chips; the timing controller includes a controller, a timing transmission circuit, and a pull-down circuit. The controller is configured to control the timing transmission circuit and the pull-down circuit, such that the M signal output terminals are connected to ground in a first phase, the M source driver chips are in a low power consumption mode in the case that the M signal input terminals are connected to ground, and the first phase indicates a phase in which the M source driver chips are expected to enter the low power consumption mode.