Curved Display Panel Corner Circuit Layout Optimization
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Solution Overview
Problem
Existing display panels face challenges in optimizing screen ratio due to non-right-angle corners, which require specific layouts for circuit units and lines, leading to increased occupied area in non-display areas.
Innovation Solution
The display panel features a curved corner in the display area with cascaded shift registers and signal lines arranged in a specific layout where cascade lines and signal lines are parallel to the outer edge of the non-display area, reducing occupied space and minimizing coupling capacitance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If signal lines and cascade lines are arranged close to each other to reduce occupied area, then the screen ratio improves, but coupling capacitance between the lines increases, leading to higher power consumption
Solution Approach 1:
The patent employs asymmetric routing for signal lines and cascade lines. Instead of parallel symmetric arrangements that would maximize coupling capacitance, the lines are routed asymmetrically with varying distances between them, reducing the overall coupling capacitance while still utilizing the corner space efficiently.
Solution Approach 2:
The patent minimizes the overlap area between signal lines and cascade lines, and ensures that where overlap is necessary, the lines are arranged to reduce parasitic capacitance. This approach maintains electrical performance while optimizing space utilization.
2Area of stationary object
If the display area uses a curved corner design, then the aesthetic appearance and space utilization improve, but the layout complexity for circuit units and lines increases
Solution Approach 1:
The patent divides the corner region into distinct functional zones: the curved display area, the transition non-display region, and the shift register area. This segmentation allows for systematic arrangement of signal lines and cascade lines in each zone, reducing overall layout complexity despite the curved corner design.
Data Source
AI summary
A display panel includes a display area, a non-display area surrounding the display area, and a plurality of signal lines, signal connection lines, and cascaded shift registers aligned in the non-display area. The display area includes a curved corner, and the non-display area includes a corner non-display area adjacent to the curved corner. The cascaded shift registers are electrically connected by associated cascade lines, and each cascaded shift register is connected with a corresponding signal line through an associated signal connection line. The associated cascade lines are located on a side of the cascaded shift registers away from the display area, and the signal lines are located on a side of the associated cascade lines away from the cascaded shift registers. The wiring directions of the signal lines and the extension lines of the associated cascade lines are in parallel with an outer edge of the non-display area.