Gate Driving Circuit Narrowing Display Side Frame
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Solution Overview
Problem
Conventional gate driving circuits require two separate circuits to output two driving signals, leading to an increased number of clock lines and TFTs, which is not suitable for narrow side frame displays and results in unsatisfactory supportability of the driving chip.
Innovation Solution
A gate driving circuit with multiple stages, each comprising two output units that can simultaneously produce a constant high voltage signal and a wave signal, reducing the need for multiple clock lines and TFTs by integrating these functions into a single circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two separate GOA circuits are used to output two driving signals, then the driving signals can be provided to control two MOSFETs, but the number of clock lines and TFTs is doubled, increasing device complexity
Solution Approach 1:
The patent merges two separate GOA circuits into a single integrated circuit that can output both the first driving signal and the second driving signal. The first output unit and second output unit are integrated within one circuit, sharing common components such as the cascading unit, bootstrap output modules, and pull-down maintaining modules. This integration eliminates the need for duplicate clock lines and TFTs while maintaining the capability to provide two distinct driving signals for controlling two MOSFETs.
Solution Approach 2:
The single GOA circuit is designed with multi-functionality to perform the tasks of two separate circuits. The cascading unit can generate both wave signals and constant high voltage signals, and the bootstrap output modules can be controlled to output different signal types. This universal design allows one circuit to fulfill the roles of two specialized circuits, reducing overall device complexity while maintaining full driving signal output capability.
2Adaptability or versatility
If two GOA circuits are used to provide two driving signals, then the MOSFETs can work in turn, but the side frame width increases due to more clock lines and TFTs
Solution Approach 1:
By merging two GOA circuits into one integrated circuit, the patent reduces the number of external clock lines and TFTs required. The integrated design shares common signal routing and control structures, thereby reducing the overall footprint of the driving circuit on the display panel. This reduction in circuit footprint directly contributes to narrowing the side frame width while maintaining the ability to control two MOSFETs for turn-based operation.
3Adaptability or versatility
If two GOA circuits are used, then two driving signals can be output, but the driving chip supportability is reduced due to larger number of clock lines
Solution Approach 1:
The integration of two GOA circuits into a single circuit reduces the number of clock lines that need to be routed and managed on the driving chip. Fewer clock lines mean simpler chip architecture, easier manufacturing processes, and better compatibility with existing driving chip designs. This reduces the supportability requirements for the driving chip while maintaining the capability to generate two distinct driving signals for coordinated MOSFET operation.
Data Source
AI summary
A gate driving circuit and a display device are provided. The gate driving circuit includes a plurality of gate driving units, each of the gate driving units Each of the stage of the gate driving unit comprises two driving signal output units and a cascading signal output unit. The two driving signal output units can in turn output a constant high voltage signal and a wave signal such that a gate driving circuit could output two driving signals at the same time. In contrast to the conventional art, which needs two gate driving circuits to output two driving signals, this embodiment of the present invention could reduce the number of the clock line and the number of the TFTs such that the display device could have a narrow side frame.