GOA Driving Unit Protective Module for Signal Integrity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In gate on array (GOA) circuits, output signals from one level are used as input signals for the next level, leading to short circuits with other signals like ELVDD, ELVSS, and Vi, causing failures and split-screen displays due to manufacturing granulation issues.
Innovation Solution
A GOA driving unit with a protective module connected to a constant direct-current signal, which outputs high or low voltage-level signals to the next level or directly to pixel units, preventing short circuits by using transistors and resistors to control signal levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If output signals from one level are used as input signals for the next level in GOA circuits, then signal transmission efficiency is improved, but short circuits with other signals occur causing failures and split-screen displays
Solution Approach 1:
The patent introduces a protective module as an intermediary between the GOA module output and the next level input. This protective module includes a protective transistor and protective resistor that act as a buffer, preventing direct contact between the output signal line and other signal lines (ELVDD, ELVSS, Vi), thereby eliminating the short circuit path while maintaining signal transmission functionality.
Solution Approach 2:
The protective module is designed to prevent short circuits before they can occur. By placing the protective transistor and resistor in advance at the output end of the GOA module, the circuit is prepared with protective measures that activate automatically when potential short circuit conditions arise, preventing failures and split-screen displays before they happen.
2Reliability
If protective modules are added to prevent short circuits, then circuit reliability is improved, but device complexity increases
Solution Approach 1:
The protective module is applied locally only at the output end of each GOA module where short circuits are most likely to occur. Rather than protecting the entire circuit uniformly, the protective transistor and resistor are strategically placed only where needed - at the interface between GOA module output and next level input - thus providing effective protection while minimizing overall circuit complexity.
Data Source
AI summary
A gate on array (GOA) driving unit, a GOA circuit, and a display device are provided. The GOA driving unit includes a GOA module configured to output a low voltage-level signal through a first output end of the GOA module under the control of a first clock signal and to output a high voltage-level signal through the first output end under the control of a second clock signal, wherein the first output end is configured to output the high or low voltage-level signal to the next level of GOA driving unit; and a protective module having a control end connected to a constant direct-current signal, an input end connected to the first output end, and a second output end configured to output the high or low voltage-level signal as a gate driving signal to a corresponding pixel unit under the control of the constant direct-current signal.