Foldable Display Panel Brightness Control via Pulse Width Adjustment
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Solution Overview
Problem
Foldable display panels face issues with inconsistent display brightness between regions due to differing light-emitting durations, leading to a 'yin-yang' screen effect that affects display quality.
Innovation Solution
A display drive method that adjusts the pulse width of light-emitting control signals for each region, allowing individual control of light-emitting elements in parallel, non-overlapping display regions through cascaded shift registers and trigger signals, ensuring balanced display brightness across the panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the display screen is made larger to provide more information and improve user experience, then the display quality and information abundance are improved, but the portability of mobile electronic products is seriously affected
Solution Approach 1:
The display screen is divided into multiple independent display regions (first display region, second display region, etc.) that can be controlled separately. Each region has its own scan drive circuit and can be adjusted independently, allowing the display to provide extensive information across multiple regions while maintaining portability through selective region usage.
2Area of stationary object
If multiple display regions are used to increase display area, then the information abundance is improved, but inconsistent light-emitting durations cause 'yin-yang' screen effect that deteriorates display quality
Solution Approach 1:
Each display region is equipped with independent control capabilities through separate scan drive circuits. The controller can individually adjust the pulse width of light-emitting control signals for each region, allowing different parts of the display to have optimized characteristics suited to their specific usage requirements while maintaining overall brightness uniformity.
Solution Approach 2:
The controller dynamically adjusts the pulse width parameter of light-emitting control signals for different display regions. By changing this temporal parameter, the system compensates for differences in light-emitting durations across regions, ensuring consistent display brightness and eliminating the 'yin-yang' screen effect.
3Adaptability or versatility
If different display regions operate independently with different light-emitting durations, then the adaptability is improved, but the display brightness consistency deteriorates
Solution Approach 1:
The controller adjusts the pulse width parameter of light-emitting control signals for different display regions to compensate for variations in light-emitting durations. This parameter adjustment ensures that despite independent operation and different usage patterns of various regions, the display brightness remains consistent across all regions.
Data Source
AI summary
A display panel and a display drive method thereof, and a display device are provided. The display panel comprises two parallel and non-overlapping display regions connected to individual scan drive circuits. The display drive method adjusts the pulse width of the light-emitting control signal for each display regions to adjust their respective light-emitting durations within a display period. This method enhances the display quality by avoiding the appearance of a yin-yang screen and improving the display brightness of each display region.