Display Panel Routing via Non-Display Area Connection Lines
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Solution Overview
Problem
Existing display panel technologies face challenges in efficiently connecting signal lines and signal drivers, particularly due to insufficient routing lines for the increasing number of driving lines required for supplying driving signals to pixels.
Innovation Solution
The implementation of a display panel design with a display area and a non-display area, where data fan-out lines, power supply lines, and driving circuit stages are connected through specific connection lines (first, second, third, and fourth connection lines) to facilitate easy connection of signal lines and signal drivers, with these lines being used as routing lines to connect data lines, driving lines, and power lines across different layers and areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the number of driving lines is increased to supply driving signals to more pixels, then the display area and pixel coverage are improved, but the routing complexity and connection difficulty increase due to insufficient routing lines
Solution Approach 1:
The patent extends routing lines from the display area into the non-display area, utilizing the spatial dimension outside the active display region. Connection lines CL1-CL4 are positioned in the non-display area to connect data fan-out lines, power supply lines, and driving circuit stages, effectively adding a spatial dimension for routing that resolves the complexity issue.
Solution Approach 2:
The patent divides the connection structure into multiple segments: data fan-out lines (DFOL1, DFOL2), power supply lines (PPL1, PPL2), and multiple connection lines (CL1-CL4) that connect these elements to driving lines. This segmentation allows independent optimization of each routing path and simplifies the overall connection architecture.
2Ease of operation
If multiple connection lines are added to connect data fan-out lines, power supply lines, and driving circuit stages, then the ease of connection is improved, but the device complexity increases
Solution Approach 1:
The connection lines CL1-CL4 serve multiple functions simultaneously: they connect data fan-out lines to data lines, power supply lines to power lines, and driving circuit stages to driving lines. This multi-functionality reduces the need for separate dedicated connection lines for each signal type, thereby improving ease of connection without proportionally increasing device complexity.
Solution Approach 2:
The patent merges the routing of data signals, power signals, and driving signals through shared connection lines in the non-display area. Multiple signal types are routed through the same physical space and connection infrastructure, consolidating the connection architecture and reducing overall complexity.
3Manufacturing precision
If data fan-out lines and driving circuit stages are positioned in the non-display area, then the display quality is improved by keeping signal lines away from the display area, but the connection routing becomes more complex
Solution Approach 1:
The patent positions data fan-out lines, power supply lines, and driving circuit stages in the non-display area, utilizing the spatial dimension outside the active display region. This separation maintains display quality by keeping signal routing away from the pixel array while providing ample space for complex connections without interfering with the display area.
Data Source
AI summary
A display device includes a display panel including a display and a non-display area, data lines, driving lines, power lines, and pixels connected to said lines being at the display area, a data driver for generating data signals supplied to the pixels, a power supply for generating a power signal supplied to the pixels, and a driving circuit at the non-display area and for generating driving signals supplied to the pixels, the driving circuit including stages for providing the driving signals to at least two of the driving lines, wherein data fan-out lines connected to the data driver are connected to the data lines, a power supply line connected to the power supply is connected to the power lines, and the driving circuit is connected to the driving lines, through a first connection line, a second connection line, a third connection line, and a fourth connection line.