Display Device Driving Voltage Control for Power Optimization
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Solution Overview
Problem
Display devices face increased power consumption and heat generation due to unnecessarily high driving voltage in general mode, which is exacerbated in large modular displays, as they maintain a constant voltage across different luminance modes.
Innovation Solution
A display device with multiple timing controllers that adjust the driving voltage and configuration values based on luminance mode changes, lowering the voltage when switching from high to general mode, and transmitting control signals to the panel driving unit to optimize power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a driving voltage is set based on current corresponding to the high luminance mode, then the high luminance mode can be smoothly driven, but the power consumption and heat generation increase in the general mode
Solution Approach 1:
The patent implements dynamic adjustment of driving voltage based on the current luminance mode. The timing controller dynamically changes the driving voltage from a first voltage (for high luminance mode) to a second voltage (for general mode), allowing the system to adapt its electrical characteristics to the operational requirements, thereby reducing power consumption in general mode while maintaining smooth operation in high luminance mode
Solution Approach 2:
The patent changes the electrical parameter (driving voltage) according to the luminance mode. By detecting the luminance mode and corresponding the driving voltage to the second voltage when in general mode, the system optimizes power consumption by using lower voltage when high luminance is not required, while ensuring the first voltage is available when high luminance mode is activated
2Reliability
If a driving voltage is set based on current corresponding to the high luminance mode, then the high luminance mode can be smoothly driven, but the heat generation increases in the general mode
Solution Approach 1:
The system dynamically adjusts the driving voltage based on the operational mode. When operating in general mode, the timing controller applies a second voltage that is optimized for normal luminance requirements, thereby reducing current flow and minimizing heat generation. When high luminance mode is activated, the system switches to the first voltage to ensure smooth operation, thus dynamically managing thermal characteristics according to actual operational needs
Solution Approach 2:
The patent changes the driving voltage parameter according to the luminance mode to control heat generation. By correlating the driving voltage with the second voltage in general mode, the system reduces electrical power dissipation and consequently reduces heat generation, while maintaining the first voltage for high luminance mode to ensure proper operation
3Device complexity
If the driving voltage is not adjusted according to luminance mode, then the system structure remains simple, but the power consumption and heat generation problems worsen in large display devices
Solution Approach 1:
The patent implements a feedback mechanism where the timing controller detects the current luminance mode and uses this information to determine the appropriate driving voltage to apply. This feedback loop allows the system to automatically adjust the voltage based on operational requirements, optimizing power consumption without requiring complex manual intervention or oversimplified control structures
Solution Approach 2:
The timing controller serves multiple functions: it generates timing signals for the display panel, detects the current luminance mode, determines the appropriate driving voltage based on the detected mode, and outputs the corresponding voltage to the display panel. This multi-functionality consolidates the voltage control mechanism within an existing component, avoiding the need for separate complex voltage control hardware
Data Source
AI summary
A display device and a method for controlling the display device are disclosed. Particularly, the disclosure relates to a display device and a method for controlling the display device. In the display device having a plurality of luminance modes, a display panel is driven by means of adjusting a driving voltage so as to correspond to a changed luminance mode and adjusting a configuration value with respect to an image so as to correspond to the adjusted driving voltage.