Array Substrate Power Routing Around Rounded Display Corners
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Solution Overview
Problem
As display panels evolve with narrower bezels, the increased resistance in power signal lines leads to overheating due to narrower line widths, which is exacerbated by rounded corner areas.
Innovation Solution
The array substrate design includes a second power signal transmission structure with a third structure extending between first and second structures, bypassing rounded corners to prevent line width limitations and facilitate parallel connections, thereby reducing equivalent impedance and alleviating overheating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the bezel is made narrower, then the display panel's aesthetic appearance and screen-to-body ratio are improved, but the power signal line width becomes narrower causing increased resistance and overheating
Solution Approach 1:
The patent introduces a third power signal transmission structure extending in the second direction (vertical direction) to supplement the first and second structures that extend in the first direction (horizontal direction). This multi-directional arrangement increases the effective cross-sectional area for power signal transmission without increasing the horizontal width occupied in the rounded corner area, thus reducing resistance while maintaining the narrow bezel design.
2Length of stationary object
If the power signal line width is reduced to fit narrow bezel, then the bezel width is reduced, but the resistance of the power signal line increases causing overheating
Solution Approach 1:
The patent combines three power signal transmission structures (first structure, second structure, and third structure) to form an integrated power signal transmission system. The first and second structures extend in the first direction while the third structure extends in the second direction, creating a merged network that increases total transmission area and reduces equivalent resistance, thereby preventing overheating while maintaining narrow bezel width.
Solution Approach 2:
By adding the third structure extending in the second direction (vertical) to complement the first and second structures extending in the first direction (horizontal), the patent utilizes multi-dimensional space to increase effective transmission area without increasing horizontal footprint, thus reducing resistance and preventing overheating in the narrow bezel region.
3Shape
If rounded corner areas are present in the bezel, then the display panel aesthetics are improved, but the power signal line width is limited causing increased resistance
Solution Approach 1:
The third structure extending in the second direction (vertical) provides an additional transmission path that bypasses the geometric constraints of the rounded corner area. While the first and second structures are limited by the horizontal space available in the rounded corner region, the vertical extension of the third structure utilizes the unused vertical space, effectively circumventing the width limitation imposed by the rounded corner shape.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design effectively prevents overheating in rounded corner areas by ensuring reliable signal transmission and reducing impedance, enhancing the display panel's performance and uniformity.
Implementation Method 1
reducing equivalent impedance and alleviating overheating
Implementation Method 2
the first structure and the second structure being arranged in a first direction; and the second power signal transmission structure includes a third structure, a part of the third structure located in the second area being disposed between the first structure and the second structure
Implementation Method 3
the third structure, the fourth structure and the fifth structure are connected in the first area
Data Source
AI summary
The present disclosure discloses an array substrate and a display panel. The array substrate includes a first power signal transmission structure and a second power signal transmission structure. In a second area, the first power signal transmission structure includes a first structure and a second structure that are insulated from each other, the first structure and the second structure being arranged in a first direction; and the second power signal transmission structure includes a third structure, a part of the third structure located in the second area being disposed between the first structure and the second structure, and the third structure extending in a second direction to an active area, where the second direction intersects the first direction.