Display Panel Segmented GOA Circuit Signal Stability
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Solution Overview
Problem
Current AMOLED display panel technology faces challenges with long transmission distances and driving signal propagation delay due to large size and complexity, leading to signal deformation, reduced display quality, and prolonged refresh times, making high refresh rates difficult to achieve.
Innovation Solution
The implementation of a display panel with two driver modules, each with a driver chip, where the GOA circuits are disconnected at specific locations, and virtual GOA circuits are added to stabilize signals, allowing for reduced signal delay and improved refresh rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If a single driver chip drives the entire GOA circuit in large-size flexible displays, then the transmission distance increases to cover the whole panel, but signal deformation becomes substantial and display quality deteriorates
Solution Approach 1:
The patent divides the single GOA circuit into multiple independent GOA circuits (first GOA circuit and second GOA circuit) that are disconnected at specific locations. Each GOA circuit is driven by its own driver chip, segmenting the long transmission path into shorter segments. This reduces signal deformation in each segment while maintaining coverage of the entire large-size display panel.
2Quantity of substance
If the number of display lines is increased to improve resolution, then the transmission distance and complexity increase, but screen refresh time becomes longer and high refresh rates become infeasible
Solution Approach 1:
The display panel is divided into multiple scanning regions, each handled by a separate GOA circuit. Multiple GOA circuits can operate in parallel to scan different regions simultaneously, thereby reducing the total refresh time despite having a large number of display lines. This parallel scanning approach enables high refresh rates even with increased line counts.
3Loss of time
If GOA circuits are disconnected at specific locations to reduce signal delay, then transmission distance per circuit is reduced, but the complexity of managing multiple driver modules increases
Solution Approach 1:
The display panel is divided into multiple scanning regions, each handled by a separate GOA circuit. Multiple GOA circuits can operate in parallel to scan different regions simultaneously, thereby reducing the total refresh time despite having a large number of display lines. This parallel scanning approach enables high refresh rates even with increased line counts.
Solution Approach 2:
Each driver chip and GOA circuit combination is designed to be functionally equivalent and interchangeable. The driver chips can drive different numbers of GOA circuits depending on the display size and configuration, providing flexibility. The disconnected GOA circuits follow the same operational principles, allowing standardized design approaches across different display configurations.
Data Source
AI summary
A display panel comprises two driver modules, each of which is provided with a driver chip in a first direction. Each driver chip drives a portion of a GOA circuit in a second direction. That is, a first driver chip drives a first GOA circuit, and a second driver chip drives a second GOA circuit. The first GOA circuit and the second GOA circuit are disconnected at a particular location on the display panel.