Shift Register Noise Leak Module for GOA Stability
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Solution Overview
Problem
Gate Drive on Array (GOA) technology requires numerous circuit elements to achieve stable scan signal output while minimizing noise interference, which increases product cost and power consumption.
Innovation Solution
The implementation of a shift register unit with a noise leak terminal and module that periodically disconnects electrical connections using clock signals to eliminate noise interference, allowing for a stable output with reduced circuit elements by utilizing a minimal number of transistors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional circuit elements are added to achieve stable scan signal output and prevent noise interference, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent extracts the noise leakage function from the traditional complex GOA circuit structure and implements it through a dedicated noise leakage module with minimal transistors. This module selectively removes noise components without requiring numerous additional circuit elements throughout the entire GOA unit, thus improving reliability while controlling device complexity.
Solution Approach 2:
The patent introduces a noise leakage module as an intermediary component that mediates between the signal transmission path and noise suppression requirements. This module acts as a specialized intermediary structure that handles noise leakage control, allowing the main GOA circuit to maintain simplicity while achieving reliable noise-free operation.
2Reliability
If additional circuit elements are added to eliminate noise interference, then reliability is improved, but power consumption increases
Solution Approach 1:
The patent extracts the noise leakage control function into a dedicated module that uses minimal transistors (typically 2-3 transistors per stage) compared to traditional approaches. This extraction allows noise interference elimination without requiring numerous additional power-consuming circuit elements throughout the GOA unit.
Solution Approach 2:
The noise leakage module uses a minimal number of transistors that are activated only when needed for noise suppression. These simple, low-power components perform their noise leakage function and remain inactive otherwise, avoiding the continuous power consumption that would result from more complex always-active noise suppression circuits.
3Device complexity
If the number of circuit elements is reduced to lower cost and power consumption, then device complexity is reduced, but reliability deteriorates due to noise interference
Solution Approach 1:
The noise leakage module serves as an intermediary that bridges the gap between simple circuit design and reliable noise-free operation. By introducing this specialized intermediate structure with minimal transistors, the patent achieves both low device complexity and high reliability simultaneously, as the module handles noise suppression without requiring complex circuitry throughout the entire GOA unit.
Solution Approach 2:
The patent extracts the noise leakage function from the main GOA circuit and implements it through a separate, simplified module. This extraction allows the main circuit to remain simple with minimal elements while the dedicated noise leakage module provides reliable noise interference elimination, achieving both low complexity and high reliability.
Data Source
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AI summary
A shift register unit and a driving method thereof, a scan driving circuit and a display device, wherein the shift register unit comprises an input terminal (INPUT), an output terminal (OUTPUT), a reset terminal (RESET), and a first noise leak terminal (LEAK1), and further comprises an output pull-down module (14), and also an input module (11), an output module (12), a reset module (13) and a first noise leak module (15) that are connected to a first node (PU), the input module (11) being configured to pull up a voltage at the first node (PU) under control of a signal received at the input terminal (INPUT), the first noise leak module (15) being configured to release a noise voltage at the first node (PU) to the first noise leak terminal (LEAK1) under control of a third clock signal (CLK1), and to disconnect an electrical connection between the first noise leak terminal (CLK1) and the first node (PU) during a time period in which the voltage at the first node (PU) is pulled up, by which a stable output of the GOA unit with noise interference being eliminated can be achieved with relatively few circuit elements.