Display Driving Method for Heavy Load Power Management
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Solution Overview
Problem
High power consumption and overheating issues in display devices when displaying heavy load images, particularly due to frequent voltage switching between high and low levels, which can damage the source driver and increase power consumption.
Innovation Solution
A driving method for display devices that involves determining if an image is a heavy load image and adjusting the first white balance data table to a second white balance data table, reducing white balance components to lower power consumption, and increasing backlight brightness to maintain image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high refresh rate and high image quality are pursued, then display quality is improved, but power consumption increases and source driver overheating occurs
Solution Approach 1:
The patent dynamically adjusts the white balance data table based on the image content being displayed. When a heavy load image is detected, the system switches from a first white balance data table to a second white balance data table with reduced white balance parameters, enabling adaptive power management that responds to real-time display requirements
Solution Approach 2:
The patent changes the white balance parameters in the data table to reduce power consumption. Specifically, when displaying heavy load images, the system modifies the white balance parameters in the second data table to have lower values compared to the first data table, thereby reducing the voltage switching amplitude and power consumption while maintaining acceptable display quality
2Reliability
If high refresh rate and high image quality are pursued, then display quality is improved, but source driver temperature increases causing damage
Solution Approach 1:
The system dynamically selects between different white balance data tables based on the detected image type. When heavy load images are detected, the system transitions to the second white balance data table with reduced parameters, thereby dynamically controlling the power consumption and temperature of the source driver to prevent damage
Solution Approach 2:
The patent takes preliminary action by pre-configuring two different white balance data tables (first and second) with different parameter characteristics. Before the source driver overheating occurs, the system proactively switches to the appropriate data table based on image content prediction, preventing the harmful thermal effect before it manifests
3Reliability
If heat sinks or high-end chips are used to solve overheating, then source driver reliability is improved, but production cost increases
Solution Approach 1:
The patent changes the operational parameters (white balance data table) rather than changing the physical hardware. By switching between different data table configurations, the system achieves thermal management without requiring additional hardware components like heat sinks or expensive high-end chips, thereby maintaining cost-effectiveness
Solution Approach 2:
The patent uses a software-based solution (white balance data table switching) that creates a virtual control mechanism to manage thermal issues, replacing the need for physical hardware modifications. This software copying approach achieves the same reliability improvement at lower manufacturing cost
Data Source
AI summary
A display device and a driving method thereof are provided. The driving method of the display device includes: adjusting a first white balance data table corresponding to an image to be displayed into a second white balance data table if the image to be displayed is a heavy load image and driving the display device to display the image to be displayed according to the second white balance data table, wherein a white balance parameter corresponding to at least one gray level in the first white balance data table is greater than a white balance parameter corresponding to the at least one gray level in the second white balance data table.