Display Panel Bias-Line Segmentation for Regional Uniformity
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Solution Overview
Problem
Display panels experience flicker and screen-splitting phenomena due to differing display effects in different regions, caused by inconsistent bias voltages across rows of pixel circuits during display stages.
Innovation Solution
Implementing a display panel design with separate bias signal lines for different display regions, where bias modules in each region receive distinct voltages at specific stages to adjust the bias states of drive modules uniformly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single bias signal line is used for the entire display panel, then the device complexity is reduced, but the display uniformity deteriorates due to inconsistent bias voltages across different regions
Solution Approach 1:
The display panel is divided into multiple display regions (first display region and second display region), each with its own bias signal line. This segmentation allows independent bias voltage control for each region, resolving the contradiction by accepting increased device complexity (multiple bias signal lines) to achieve improved display uniformity across different regions.
Solution Approach 2:
Different bias voltages are applied to different display regions based on their specific requirements. The first bias signal line provides a first bias voltage to the first display region, while the second bias signal line provides a second bias voltage to the second display region. This local quality approach ensures each region receives the optimal bias voltage for uniform display performance.
2Ease of operation
If the same bias voltage is applied to all display regions simultaneously, then the device operation is simplified, but flicker and screen-splitting phenomena occur due to inconsistent display effects
Solution Approach 1:
The bias voltage application is made dynamic and region-specific rather than static and uniform. The bias modules in different display regions can receive different bias voltages at different times, allowing the system to adapt to varying display requirements and eliminate flicker and screen-splitting phenomena while maintaining reliable display performance.
Solution Approach 2:
Bias modules are configured to write bias voltages to drive modules in advance before display operations. This preliminary action ensures that each display region has the appropriate bias voltage ready, preventing display instability, flicker, and screen-splitting phenomena while maintaining simplified operation through automated voltage application.
3Device complexity
If bias modules in different regions receive the same voltage signal, then the signal transmission is simplified, but the display effect consistency deteriorates
Solution Approach 1:
The bias signal transmission system is segmented into multiple independent signal lines (first bias signal line and second bias signal line), each serving specific display regions. This segmentation enables different voltage signals to be transmitted to different regions, achieving consistent display effects across regions while accepting the increased device complexity of multiple signal lines.
Data Source
AI summary
Provided are a display panel, a driving method thereof and a display apparatus. The display panel includes bias signal lines and pixel circuits. A pixel circuit includes a drive module and a bias module. The bias module is connected between a first terminal of the drive module and a bias signal line. A display region of the display panel includes a first display region and a second display region. The bias signal lines include a first bias signal line and a second bias signal line. Bias modules in the first display region are connected to the first bias signal line. Bias modules in the second display region are connected to the second bias signal line. In at least part of turning-on stages of bias modules, a voltage transmitted by the first bias signal line is different from a voltage transmitted by the second bias signal line.