Variable Source Voltage Control for Low-Power Display Driving
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Solution Overview
Problem
Typical display devices suffer from wasted power consumption due to a constant source driving voltage supplied to the data driving circuit.
Innovation Solution
A display device and method that allow a variable source driving voltage to be supplied to the data driving circuit, using a power supply with a source voltage generation circuit controlled by a variable source voltage control signal from a controller.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a constant source driving voltage is supplied to the data driving circuit, then the display device operates stably, but power consumption increases
Solution Approach 1:
The patent applies dynamics by transitioning from a constant source driving voltage to a variable source driving voltage that changes based on display content characteristics. The source voltage is dynamically adjusted according to the average grayscale value of the displayed image, allowing the system to adapt its power consumption to actual operational needs while maintaining stability through controlled variation rather than fixed operation
Solution Approach 2:
The patent implements parameter changes by modifying the source driving voltage parameter based on display content analysis. The controller calculates the average grayscale value of the displayed image and uses this information to adjust the source voltage parameter, thereby optimizing power consumption while maintaining display quality and operational stability
2Use of energy by moving object
If a variable source driving voltage is supplied to the data driving circuit, then power consumption is reduced, but the circuit complexity increases
Solution Approach 1:
The patent uses parameter changes to control the source voltage generation circuit based on calculated grayscale values. By adjusting the source voltage parameter according to display content characteristics, the system reduces power consumption without requiring fundamentally new circuit architectures, thereby limiting the increase in circuit complexity
Solution Approach 2:
The patent implements feedback by using the calculated average grayscale value as a control signal to adjust the source driving voltage. The controller continuously monitors display content characteristics and feeds this information back to the source voltage generation circuit, enabling automatic power optimization while maintaining manageable circuit complexity through intelligent control
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the display device to be driven at low power, reducing power consumption by adjusting the source voltage based on input voltage and control signals.
Implementation Method 1
the source voltage generation circuit may be configured to receive a variable source voltage control signal from the controller and output the variable source voltage corresponding to the variable source voltage control signal
Data Source
AI summary
A display device and a method of driving the same are disclosed, and more specifically, the display device includes a source voltage generation circuit, and enabling the source voltage generation circuit to receive a variable source voltage control signal from a controller and supply a variable source voltage corresponding to the variable source voltage control signal, and a method of driving the display device.