Display Panel Driving Circuit Voltage Signal Segmentation
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Solution Overview
Problem
Existing scan driving circuits in display technology cannot meet the demands of pixel circuits for different signals with varying voltages, leading to instability and inefficiency in image refresh and display.
Innovation Solution
A display panel with a driving circuit featuring N-level shift registers cascaded together, utilizing multiple voltage signal lines (high-level and low-level signals) to stabilize and control output signals, ensuring flexibility and stability in signal output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional scan driving circuit is used, then the display panel can perform basic scanning function, but it cannot meet the demands of pixel circuits for different signals with different voltages
Solution Approach 1:
The voltage signal lines are segmented into multiple groups (first voltage signal lines and second voltage signal lines) with different voltage levels. Each group is independently controlled by separate control signals, allowing the driving circuit to selectively activate appropriate voltage levels for different pixel circuit demands, thereby improving adaptability while maintaining stability through dedicated control paths.
Solution Approach 2:
The driving circuit dynamically switches between different voltage signal lines based on the requirements of pixel circuits. By using control signals to selectively enable specific voltage levels (first or second voltage signals), the circuit adapts to varying operational conditions while ensuring stable signal output through controlled transitions.
2Adaptability or versatility
If multiple voltage signal lines are added to meet different signal demands, then the adaptability improves, but the device complexity increases
Solution Approach 1:
The driving circuit is designed with multi-functionality to handle both first voltage signals and second voltage signals through a unified structure. The same control mechanism manages multiple voltage signal lines, and the pixel circuits can universally receive appropriate voltage levels based on their specific needs, achieving signal flexibility without proportionally increasing circuit complexity.
Solution Approach 2:
Different regions or portions of the driving circuit are assigned specific functions for handling different voltage levels. The control signals are locally directed to specific voltage signal line groups, allowing each part of the circuit to be optimized for its specific voltage handling requirements while maintaining overall system integration.
Data Source
AI summary
A display panel and a display device are provided. The display panel includes a driving circuit. The driving circuit includes N-level shift registers cascaded with each other, where N is greater than or equal to two. the display panel further includes a first voltage signal line, providing a first voltage signal for the driving circuit; a second voltage signal line, providing a second voltage signal for the driving circuit; a third voltage signal line, providing a third voltage signal for the driving circuit; and a fourth voltage signal line, providing a fourth voltage signal for the driving circuit. At least one of the third voltage signal line and the fourth voltage signal line is disposed on a side of at least one of the first voltage signal line and the second voltage signal line facing toward a display region of the display panel.