Driving Circuit Shared Pull-Up Node for Narrow Bezel Displays
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Solution Overview
Problem
Existing driving circuits in display devices cannot reduce the number of transistors while outputting multiple stages of gate driving signals, hindering the achievement of a narrow frame design.
Innovation Solution
The proposed driving circuit includes a pull-up node and output modules that share a pull-up node to output multiple gate driving signals, reducing the number of transistors and minimizing layout space, thereby enabling a narrow bezel design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If each driving circuit has an independent pull-up node and transistor configuration, then the driving circuit can reliably output gate driving signals, but the number of transistors increases and layout space expands
Solution Approach 1:
The patent merges multiple independent pull-up nodes into a shared pull-up node that serves multiple driving output terminals. This consolidation reduces the total transistor count and minimizes layout space while maintaining the reliability of gate driving signal output through the shared node architecture
Solution Approach 2:
The shared pull-up node is designed to perform multiple functions simultaneously, serving as the pull-up element for multiple different driving output terminals. This multi-functional design allows a single node to replace what would traditionally require multiple separate nodes, reducing overall circuit complexity and space requirements
2Adaptability or versatility
If multiple stages of gate driving signals are output through separate driving circuits, then each output can be independently controlled, but the transistor count cannot be reduced
Solution Approach 1:
The patent segments the control functions by using a shared pull-up node that can be independently controlled for each driving output terminal through separate control signals. This allows each output to maintain independent control capability while sharing the common pull-up infrastructure, thereby reducing overall transistor count
Solution Approach 2:
The shared pull-up node acts as an intermediary element that mediates between multiple control signals and multiple driving output terminals. It receives control inputs and distributes the pull-up function to various outputs, enabling independent control of each stage while using a common structural element
Data Source
AI summary
A driving circuit and a display device are provided. The driving circuit includes a pull-up node, an input module, a pull-up module, a first output module and a second output module; the input module is electrically connected to an input terminal and a pull-up node, and is configured to control a potential of the pull-up node under the control of an input signal provided by the input terminal; the pull-up module controls the potential of the pull-up node; the first output module outputs a first gate driving signal through the first driving output terminal under the control of the potential of the pull-up node; the second output module outputs a second gate driving signal through the second driving output terminal under the control of the potential of the pull-up node. The present disclosure may output a plurality of stages of gate driving signals and reduce the number of transistors, which is facilitate to the narrow border.