Display Panel Shielded Signal Lines Bypass Opening Area
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Solution Overview
Problem
Display apparatuses face challenges in reducing the non-display area while maintaining reliability and preventing luminance deviations due to coupling between adjacent conductive lines, which limits their design flexibility and efficiency.
Innovation Solution
The display panel incorporates a shield layer in the non-display area that overlaps bypass portions of conductive lines, with these lines alternately arranged on different layers to prevent coupling and reduce the non-display area, and a third conductive line with a greater width than the first and second conductive lines to shield them effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If conductive lines are routed directly across the opening area, then the non-display area can be minimized, but luminance deviations occur due to coupling between adjacent conductive lines
Solution Approach 1:
The conductive lines are divided into multiple segments: first conductive lines on a first layer, second conductive lines on a second layer, and bypass portions that route around the opening area. This segmentation allows the lines to avoid direct coupling while maintaining electrical connectivity, thereby preventing luminance deviations without significantly increasing the non-display area.
Solution Approach 2:
The patent introduces a vertical dimension by routing conductive lines on multiple layers (first layer, second layer, and bypass portions). This multi-layer approach allows adjacent conductive lines to be separated in the vertical direction, reducing electromagnetic coupling while maintaining a compact lateral layout that minimizes the non-display area.
2Reliability
If a shield layer is added to prevent coupling between conductive lines, then luminance uniformity is improved, but device complexity increases
Solution Approach 1:
The bypass portions serve multiple functions: they act as shielding structures to prevent coupling between adjacent conductive lines, maintain electrical connectivity, and define the boundary of the opening area. This multi-functionality reduces the need for separate shield layers, thereby improving luminance uniformity without proportionally increasing device complexity.
Solution Approach 2:
The bypass portions act as intermediary structures between adjacent conductive lines, providing electromagnetic shielding by routing around the opening area. This intermediary approach prevents direct coupling while maintaining a relatively simple layer structure compared to adding dedicated shield layers.
3Reliability
If conductive lines are routed around the opening area, then coupling between adjacent lines is reduced, but the non-display area increases
Solution Approach 1:
The patent utilizes the vertical dimension by routing conductive lines on multiple layers. The first conductive lines are on a first layer, second conductive lines are on a second layer, and bypass portions connect these layers by routing around the opening area. This multi-layer approach reduces coupling between adjacent lines while minimizing the lateral footprint, thereby limiting the increase in non-display area.
Solution Approach 2:
The conductive lines are segmented into different portions on different layers: first conductive lines, second conductive lines, and bypass portions. This segmentation allows the lines to route around the opening area in a distributed manner across multiple layers, reducing the concentration of routing in any single area and thereby minimizing the overall non-display area while preventing coupling.
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 configuration effectively reduces the non-display area and prevents luminance deviations, enhancing the reliability and design flexibility of the display panel by shielding adjacent conductive lines and optimizing their arrangement.
Implementation Method 1
a shield layer arranged in the non-display area and overlapping at least one first bypass portion
Data Source
AI summary
A display panel includes: a substrate including an opening area, a non-display area at least partially surrounding the opening area, and a display area; a plurality of first lines, each of which includes a first bypass portion along the opening area; a plurality of second lines, each of which includes a second bypass portion along the opening area; and a shield layer overlapping at least one first bypass portion. Each of the first lines includes a first or second conductive line in the non-display area. Each of the first and second conductive lines includes the first bypass portion. The first and second conductive lines are alternately arranged and are disposed on different layers. Each of the second lines includes a third conductive line in the non-display area. Each of the third conductive lines includes the second bypass portion, and at least partially overlaps the first or second conductive line.