GOA Driving Circuit Electrostatic Discharge Module
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Solution Overview
Problem
In the manufacturing process of display panels, electrostatic charges accumulate in regions with high metal line density, leading to breakdown and burnout of driving circuits, particularly in Gate Driver on Array (GOA) circuits, due to insufficient electrostatic discharge and introduction of charges through grounding lines, which affects display stability and increases frame width.
Innovation Solution
A driving circuit with an electrostatic charge and discharge module connected in series with a unidirectional gating module and grounding module, where the unidirectional gating module is turned on when the voltage is less than or equal to the signal transmission module's output, allowing charges to be stored and discharged to the grounding module, preventing accumulation in the driving circuit and reducing external charge introduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If grounding lines are used to discharge electrostatic charges, then electrostatic discharge capability is improved, but frame width increases due to the need for sealants
Solution Approach 1:
The invention extracts the electrostatic discharge function from the grounding lines by introducing a dedicated electrostatic charge and discharge module. This module is specifically designed to handle electrostatic charges, allowing the grounding lines to focus solely on their original function, thereby eliminating the need for sealants and reducing frame width.
Solution Approach 2:
The invention segments the electrostatic discharge function from the grounding system by creating a separate electrostatic charge and discharge module. This modular approach allows independent optimization of both the grounding lines and the electrostatic discharge mechanism, solving the contradiction between discharge capability and frame width.
2Productivity
If metal line density is increased in driving circuits, then circuit integration is improved, but electrostatic charge accumulation increases leading to breakdown risk
Solution Approach 1:
The invention introduces an intermediary electrostatic charge and discharge module between the high-density metal lines and the grounding system. This intermediary component captures and discharges electrostatic charges before they can accumulate to dangerous levels, enabling high circuit integration without increasing breakdown risk.
3Reliability
If unidirectional gating module is added to control charge flow, then charge discharge control is improved, but device complexity increases
Solution Approach 1:
The unidirectional gating module operates autonomously based on voltage polarity, automatically directing charge flow without requiring external control signals. This self-service mechanism provides reliable charge discharge control while minimizing additional circuit complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Prevents breakdown and burnout of driving circuits by effectively discharging accumulated electrostatic charges and reducing frame width by eliminating the need for sealants on grounding lines, thereby enhancing display panel stability and design flexibility.
Implementation Method 1
the unidirectional gating module is configured to be turned on when a turn-on voltage of the unidirectional gating module is less than or equal to a voltage output by the signal transmission module, or turned off when the turn-on voltage of the unidirectional gating module is greater than the voltage output by the signal transmission module
Implementation Method 2
the electrostatic charge and discharge module is configured to store electrostatic charges flowing through the electrostatic charge and discharge module, and release the stored electrostatic charges to the grounding module
Implementation Method 3
the grounding module is configured to be grounded
Data Source
AI summary
A driving circuit includes at least one first module, an electrostatic charge/discharge module connected to the first module and a grounding module; each first module includes a driving module, a signal transmission module and a gating module; the signal transmission module is connected to and transmits a driving signal to the driving module; the grounding module is grounded; the gating module is connected with the signal transmission module; the gating module is turned on with its turn-on voltage less than or equal to a voltage of the signal transmission module, or turned off with the turn-on voltage greater than the voltage of the signal transmission module; the turn-on voltage of the gating module is greater than that of the driving module; the charge/discharge module is connected to the gating module and the grounding module, and configured to store charges flowing therethrough and release the charges to the grounding module.