Display Driving Device Regulated Voltage Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display panels suffer from non-uniform brightness due to varying driving capabilities across different regions, leading to a worse display effect as the panel size increases, with regions farther from the power interface experiencing lower voltage and brightness.
Innovation Solution
A display driving device with a power supply module that outputs regulated voltages to specific display regions based on distance from the power interface, using voltage conversion and regulation units to ensure uniform brightness by adjusting the terminal voltages of light-emitting transistors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the display panel size is increased, then the display area is enlarged, but the brightness uniformity deteriorates due to greater voltage differences between regions
Solution Approach 1:
The display panel is divided into multiple display regions based on distance from the power interface. Each region is assigned a specific regulated voltage level, creating segmented voltage zones that compensate for distance-related voltage drops and maintain brightness uniformity across the entire large display area.
Solution Approach 2:
Different display regions receive different regulated voltages according to their distance from the power interface. Regions farther from the power interface receive higher regulated voltages to compensate for voltage drops, while regions closer to the power interface receive lower regulated voltages, creating locally optimized voltage distribution for uniform brightness.
2Device complexity
If a single power interface is used, then the device complexity is reduced, but the voltage distribution uniformity deteriorates across the display panel
Solution Approach 1:
The system changes the voltage parameter dynamically based on spatial position. A single power interface provides the input voltage, but voltage regulation units adjust the output voltage level according to the distance from the power interface, transforming a single-voltage system into a multi-voltage system to achieve uniform distribution.
Solution Approach 2:
Voltage regulation units are introduced as intermediary components between the single power interface and the display regions. These regulators act as mediators that adjust voltage levels for different regions, enabling uniform voltage distribution while maintaining a simple single-power-interface architecture.
3Illumination intensity
If regulated voltage is applied to distant regions, then the brightness uniformity is improved, but the device complexity increases due to additional voltage conversion units
Solution Approach 1:
The voltage regulation function is segmented and distributed to specific regions that need it. Only display regions at distances greater than a preset threshold from the power interface are equipped with voltage regulation units, avoiding unnecessary complexity in regions where regulation is not needed while maintaining brightness uniformity where required.
Data Source
AI summary
The present disclosure relates to a display driving device and an electronic apparatus, wherein the device comprises a power supply module for outputting a first power supply voltage and a second power supply voltage; and a display panel including a power interface electrically connected to the power supply module. The power supply module is further configured to output a first regulated voltage and/or a second regulated voltage for a target display region from which a distance to the power interface is greater than a preset distance, to regulate a first terminal voltage of a light-emitting transistor in the target display region via the first regulated voltage and/or regulate a second terminal voltage via the second regulated voltage.