Dynamic Driving Voltage Adjustment for Display Power Optimization
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Solution Overview
Problem
Existing electronic devices with displays face power consumption issues due to the use of a fixed driving voltage that is not optimized for the hardware, leading to inefficiency and reduced service life.
Innovation Solution
An electronic device with a display panel, a gate driving circuit, and a control unit that includes a dummy scan line and output units for providing test scan signals, allowing the control unit to update the driving voltage based on the test scan signals to optimize the voltage for efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed driving voltage is applied to drive the display, then the display can operate normally, but power consumption increases and service life decreases
Solution Approach 1:
The patent implements dynamic voltage adjustment by introducing a dummy scan line that outputs test scan signals. The control unit monitors these signals and dynamically adjusts the driving voltage based on actual display panel requirements, transitioning from a static fixed voltage system to a dynamic adaptive voltage system that optimizes power consumption while ensuring reliable operation.
Solution Approach 2:
The patent establishes a feedback mechanism where the control unit receives test scan signals from the dummy scan line, compares them against reference values, and adjusts the driving voltage accordingly. This closed-loop feedback system enables real-time optimization of voltage levels, reducing power consumption while maintaining display reliability.
2Reliability
If a fixed driving voltage is applied to drive the display, then the display can operate normally, but service life is reduced
Solution Approach 1:
The system dynamically adjusts the driving voltage based on actual display panel requirements monitored through test scan signals. By adapting voltage levels to actual needs rather than maintaining a constant high voltage, the system reduces stress on display components, thereby extending device service life while ensuring stable operation.
Solution Approach 2:
The patent changes the voltage parameter dynamically based on feedback from test scan signals. By adjusting the driving voltage to match actual display panel requirements, the system operates at optimal voltage levels that extend component lifespan while maintaining reliable display performance.
3Reliability
If a fixed driving voltage is applied to drive the display, then the display can operate, but power usage is not optimized
Solution Approach 1:
The control unit uses feedback from test scan signals to determine the actual voltage requirements of the display panel. This feedback mechanism enables the system to eliminate energy waste by adjusting the driving voltage to the minimum necessary level for proper display operation, optimizing power usage efficiency.
Solution Approach 2:
The display panel essentially tests itself through the dummy scan line and test scan signals, providing self-diagnostic information to the control unit. This self-service mechanism enables the system to automatically optimize its own power consumption without external intervention, adjusting voltage levels to match actual operational needs.
Data Source
AI summary
An electronic device includes a display panel, a gate driving circuit and a control unit. The display panel includes a display scan line and a dummy scan line. The gate driving circuit includes a first output unit for providing a display scan signal to the display scan line, and a second output unit for providing a test scan signal to the dummy scan line. The control unit is electrically connected to the gate driving circuit for receiving the test scan signal, updating a driving voltage according to the test scan signal, and driving the gate driving circuit according to the updated driving voltage.