Flexible Array Substrate with Oblique Data Lines and Adaptive Driving
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Solution Overview
Problem
Existing flexible display technologies lack flexibility in driving units, as they are designed for arrays with uniform numbers of thin film transistors connected to data lines, limiting their adaptability to substrates with varying transistor counts.
Innovation Solution
An array substrate with intersecting data and gate lines forming sub-pixel regions, where the driving unit outputs signals based on the number of thin film transistors connected to each data line, allowing for different numbers of sub-signals on each line, and data lines are arranged at angles between 30° to 60° relative to the substrate, enhancing flexibility and adaptability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If data lines are arranged perpendicular to the flexible substrate (90° angle), then the manufacturing and connection are simplified, but the substrate's flexibility and bending performance deteriorate
Solution Approach 1:
The patent applies asymmetry by changing the data line arrangement from a symmetric perpendicular configuration (90°) to an asymmetric oblique configuration (30°-60°). This asymmetric arrangement reduces stress concentration at bending points while maintaining electrical connectivity, thus improving substrate flexibility without compromising manufacturing feasibility
Solution Approach 2:
The patent changes the geometric parameter of data line arrangement from a fixed 90° angle to a variable angle range (30°-60°). This parameter change allows optimization of both flexibility and manufacturability by selecting appropriate angles within the range, balancing mechanical performance and manufacturing ease
2Device complexity
If each data line is connected to the same number of thin film transistors, then the driving signal design is simplified, but the adaptability to different display configurations is reduced
Solution Approach 1:
The patent segments the data lines into different groups based on their connection characteristics to thin film transistors. By dividing data lines into multiple groups with different TFT connection counts, the system achieves adaptability to various display configurations while managing driving signal complexity through structured segmentation
Solution Approach 2:
The patent creates a universal driving unit capable of handling multiple data line configurations. The driving unit is designed to output different numbers of sub-signals to different data lines, making it multi-functional and adaptable to various display panel layouts and TFT arrangements
3Ease of operation
If the driving unit outputs the same number of sub-signals to all data lines, then the driving logic is simplified, but the ability to handle varying TFT counts per data line is lost
Solution Approach 1:
The patent introduces dynamics into the driving unit by enabling it to adaptively adjust the number of sub-signals output to each data line based on the actual TFT connection count. This dynamic capability allows the driving unit to switch between different operating modes, maintaining operational simplicity while achieving driving flexibility for various configurations
Data Source
AI summary
The present disclosure provides an array substrate, which includes a flexible substrate and an array layer formed on the flexible substrate. The array layer includes: data lines, gate lines, thin film transistors and a driving unit. The driving unit is configured to output data driving signals to connected data lines. The data lines includes a first data line connected to thin film transistors of a first number and a second data line connected to thin film transistors of a second number. The number of sub-signals in a data driving signal outputted to the first data line by the driving unit within a time period of one frame is the first number. The number of sub-signals in a data driving signal outputted to the second data line by the driving unit within a time period of one frame is the second number.