Display Panel With Dynamic Data Refresh Regions
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Solution Overview
Problem
Current OLED display panels experience non-uniform brightness due to transverse mura, resulting in uneven color display across the panel.
Innovation Solution
The display panel incorporates multiple data refresh regions with varying widths and refresh frequencies across different stages, allowing for dynamic adjustment to satisfy diverse display requirements and reduce brightness differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a single data refresh region with uniform width and frequency is used across the display panel, then the device structure is simple and easy to manufacture, but non-uniform brightness and transverse mura occur resulting in poor display quality
Solution Approach 1:
The display panel is divided into multiple data refresh regions (first data refresh region and second data refresh region) with different widths and refresh frequencies. Each region is independently configured to address specific display quality issues in different areas, thereby eliminating transverse mura and achieving uniform brightness across the panel.
Solution Approach 2:
Different data refresh regions are assigned different refresh frequencies (F1 and F2) and widths (W1 and W2) according to their specific display requirements. The first data refresh region uses one set of parameters while the second uses another, allowing local optimization of display quality without requiring uniform configuration across the entire panel.
2Loss of energy
If the width of data refresh region is reduced in the second stage (W2<W1), then power consumption is reduced and energy efficiency is improved, but the display area and visibility are compromised
Solution Approach 1:
The width of the data refresh region is made dynamic by implementing different widths in different stages. In the first stage, the width is W1, and in the second stage, it is reduced to W2. This dynamic adjustment allows the system to optimize power consumption during the second stage while maintaining adequate display area through the presence of the second data refresh region.
Solution Approach 2:
The display operation is divided into periodic stages with different configurations. During the first stage, the first data refresh region operates with width W1, and during the second stage, the configuration changes to use the first data refresh region with width W2 and the second data refresh region. This periodic switching enables energy savings while maintaining display functionality.
3Adaptability or versatility
If different refresh frequencies (F1≠F2) are applied to different data refresh regions, then display quality and adaptability to diverse requirements are improved, but device complexity and control difficulty increase
Solution Approach 1:
The control system is segmented into separate control mechanisms for different data refresh regions. Each region (first and second) has its own refresh frequency (F1 and F2) that can be independently controlled, allowing the system to meet diverse display requirements without requiring a monolithic complex control architecture.
Solution Approach 2:
The display panel achieves multi-functionality by supporting different refresh frequencies in different regions simultaneously. This universal approach allows the same display panel to satisfy various display requirements (different refresh rates, different quality levels) without requiring separate dedicated systems for each function.
Data Source
AI summary
Provided is a display panel. A width W1 of a first data refresh region of the display panel working in a first stage is not equal to a width W2 of a first data refresh region of the display panel working in a second stage. In the conversion from the first stage to the second stage, the width of the first data refresh region is gradually reduced, and the second stage includes a second data refresh region with a refresh frequency different from a refresh frequency of the first data refresh region, so that the display panel can satisfy different display requirements simultaneously.