Shift Register With Oxide Semiconductor Transistors for Narrow Frame Displays
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The increasing demand for high display accuracy in electronic devices requires more complex drive circuits for display panels, leading to a large number of clock signal lines and clock control modules, which hinder narrow frame designs and increase design costs.
Innovation Solution
A shift register with a node control module using oxide semiconductor transistors and a voltage regulator module to stabilize the drive signal output, combined with a gate drive circuit that can function as both a light emission control drive circuit and a scan drive circuit, reducing the number of clock signal lines and clock control modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a plurality of different drive signals are required in one pixel circuit to improve display accuracy, then display accuracy is improved, but a relatively large quantity of clock signal lines and clock control modules are required, which increases device complexity and design costs
Solution Approach 1:
The gate drive circuit is designed to perform multiple functions: it can operate as a scan drive circuit to provide scan signals for pixel circuits, or as a light emission control drive circuit to provide light emission control signals. This multi-functionality eliminates the need for separate clock control modules for different signal types, reducing device complexity while maintaining the ability to provide multiple different drive signals for high display accuracy
Solution Approach 2:
The patent combines the scan drive circuit and light emission control drive circuit into a single gate drive circuit structure. By merging these functions into one circuit that can be configured for different operations, the quantity of clock signal lines and clock control modules is reduced, addressing the technical contradiction between display accuracy and device complexity
2Reliability
If stability deviation of the transistor is reduced to prevent circuit logic errors and improve reliability, then reliability is improved, but this requires more precise transistor control and circuit design
Solution Approach 1:
The patent applies different semiconductor material characteristics to different parts of the circuit: oxide semiconductor transistors are used in the node control module where high stability is critical to prevent logic errors, while other portions can use standard transistors. This localized application of high-stability materials ensures reliability where needed without unnecessarily complicating the entire circuit architecture
Solution Approach 2:
The voltage regulator module acts as an intermediary between the power supply and the transistor circuits, providing stable voltage regulation to minimize stability deviation. This intermediary component ensures reliable transistor operation and prevents circuit logic errors without requiring overly complex circuit designs
3Stability of the object's composition
If oxide semiconductor transistors are used in the node control module to reduce electric leakage and improve signal stability, then signal stability is improved, but the manufacturing process becomes more complex
Solution Approach 1:
Oxide semiconductor transistors are used specifically in the node control module where signal stability is most critical, rather than throughout the entire device. This localized application maintains signal stability while limiting the impact on manufacturing complexity to only the specific module requiring enhanced performance
Data Source
AI summary
This application provides a shift register, a gate drive circuit, a display panel, and an electronic device. The shift register includes: a node control module, electrically connected to a first level signal receive end that receives a low level, a second level signal receive end that receives a high level, a first clock signal end, a second clock signal end, a first node, and a second node; an input module, electrically connected to the second clock signal end, a trigger signal input end, and the second node; a voltage regulator module, electrically connected to the second node, a third node, and the second clock signal end; and an output module, electrically connected to the first level signal receive end, the second level signal receive end, a drive signal output end, the first node, and the third node.