Dual-Output Shift Register Unit for Narrow Bezel Gate Drivers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The complexity and large footprint of gate driver circuits in display devices due to the need for multiple shift register units, which is disadvantageous for designs with narrow bezels.
Innovation Solution
A shift register unit design that reduces the number of units by incorporating an input module, reset module, node control module, and output modules with transistors and capacitors, allowing for phase difference in clock signals to halve the number of shift register units in the gate driver circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional gate driver circuit uses one shift register unit per gate line, then each gate line receives proper gate signals, but the gate driver circuit becomes complicated in structure and occupies large footprint
Solution Approach 1:
The patent merges the functionality of two shift register units into one by enabling a single shift register unit to drive two gate lines simultaneously through dual output terminals. This combining approach reduces the total number of shift register units required, thereby simplifying the overall gate driver circuit structure while maintaining the capability to provide proper gate signals to all gate lines
Solution Approach 2:
The shift register unit is designed with multi-functionality to serve multiple purposes: it can output gate signals to two different gate lines through its first and second output terminals, and can operate with different clock signal phases to drive different gate lines. This universal design allows one shift register unit to replace what would traditionally require two separate units
2Reliability
If a conventional gate driver circuit uses one shift register unit per gate line, then each gate line receives proper gate signals, but the gate driver circuit occupies large footprint
Solution Approach 1:
By merging the functionality of two shift register units into one dual-output unit, the physical footprint of the gate driver circuit is reduced. Instead of having two separate units each occupying space, a single integrated unit serves two gate lines, thereby halving the required footprint while maintaining reliable gate signal provision to all gate lines
Data Source
AI summary
A shift register unit is disclosed which includes an input module, a reset module, a node control module, a first output module and a second output module. Each of the shift register units can output two scan signals that have a phase difference with respect to each other. Also disclosed are a gate driver circuit and a display device.