Display Substrate Driving Layout for Narrow-Bezel Panels
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Solution Overview
Problem
The increasing number of driving signal lines in display devices necessitates a corresponding increase in driving circuits in the peripheral area, hindering the realization of a narrow bezel design.
Innovation Solution
A display substrate with a driving module that includes at least two independent driving circuits, such as a gate driving circuit and a reset driving circuit, alternately arranged with their respective signal lines, allowing for reduced circuit count and stable signal output, facilitating a narrow bezel design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of driving signal lines increases to support more pixel units, then the display resolution and quality improve, but the number of driving circuits required increases, making narrow bezel design difficult
Solution Approach 1:
The patent merges multiple driving functions into a single integrated driving circuit. Specifically, one driving circuit simultaneously drives multiple gate lines (G1-G4) and reset signal lines (RST1-RST4) through shared signal lines, eliminating the need for separate driving circuits for each signal line type. This consolidation reduces the total number of driving circuits while maintaining the ability to drive increased numbers of pixel units for high-resolution displays.
Solution Approach 2:
The driving circuit is designed with multi-functionality to perform multiple driving tasks. The same driving circuit can output different types of signals (gate scanning signals and reset scanning signals) through different signal lines, and can drive multiple lines simultaneously. This universal approach allows a reduced number of driving circuits to support the increased complexity of high-resolution displays.
2Reliability
If independent driving circuits are provided for each type of driving signal line, then the control precision and reliability improve, but the peripheral area required increases, preventing narrow bezel realization
Solution Approach 1:
The patent combines multiple driving functions into a single integrated driving circuit located in the peripheral area. By merging the driving of gate lines and reset signal lines into one circuit, the peripheral area required is significantly reduced compared to having independent driving circuits for each signal line type, while still maintaining reliable control through proper signal management.
Solution Approach 2:
The patent resolves the area constraint by transitioning from a horizontal arrangement of multiple independent driving circuits to a vertical/dimensional arrangement where one driving circuit serves multiple lines through shared signal pathways. This dimensional reorganization allows the same control reliability to be achieved with reduced peripheral area, enabling narrow bezel design.
3Ease of operation
If multiple independent driving circuits are arranged in the peripheral area, then each signal line can be controlled independently, but the arrangement density increases, making narrow bezel design impossible
Solution Approach 1:
The patent segments the control functions within a single driving circuit by providing separate output terminals for different signal types (gate scanning signals and reset scanning signals). This segmentation allows independent control of different signal lines while keeping the driving circuits consolidated, reducing arrangement density and enabling narrow bezel design without sacrificing control independence.
Solution Approach 2:
The patent uses shared signal lines as intermediaries between the single driving circuit and multiple pixel unit groups. These intermediary signal lines carry different types of signals from the same driving circuit to different groups of pixel units, enabling independent control functionality while maintaining a compact arrangement with reduced device complexity.
Data Source
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AI summary
The present disclosure provides a display substrate, including a display area and a peripheral area surrounding the display area, where N pixel unit groups are arranged in the display area, and each pixel unit group is provided with a corresponding gate line, a first reset signal line and a second reset signal line; a driving module is arranged in the peripheral area and includes at least two driving circuits, at least two operating signal line groups which are in one-to-one correspondence with the driving circuits are further arranged in the peripheral area, the driving circuits and the operating signal line groups are alternately arranged, and each driving circuit is adjacent to the operating signal line group corresponding thereto; the at least two driving circuits include a gate driving circuit and a reset driving circuit provided with N second signal output terminals capable of sequentially outputting reset scanning signals; the ith second signal output terminal is coupled to the second reset signal line configured for the ith pixel unit group and the first reset signal line configured for the (i+1)th pixel unit group.