Peripheral Pixel Pad Orientation for Slim LED Display Frames
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Solution Overview
Problem
LED display panels face challenges in achieving a slim frame design due to the presence of pads and driving circuits, making it difficult to create a frameless or slim frame display.
Innovation Solution
The design includes a substrate with an intermediate and peripheral region, where pixels in the peripheral region have pad groups arranged in specific directions and distances to allow for a slim frame design, with peripheral pixels configured to display the same color as standard pixels, and the use of sub-pixels with separate pad groups and transistors to optimize layout and reduce frame thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If pads and driving circuits are included in LED display panel pixels, then the display panel can function properly, but it becomes difficult to achieve a slim frame design or frameless design
Solution Approach 1:
The patent applies local quality by differentiating the pad arrangement between standard pixels and peripheral pixels. Standard pixels have pads arranged in a first direction, while peripheral pixels have pads arranged in a second direction that crosses the first direction. This localized differentiation allows peripheral pixels near the edge to have reduced pad occupation area, enabling slim frame design without compromising the functionality of internal standard pixels.
Solution Approach 2:
The patent segments the display panel into two distinct regions: a first region containing standard pixels with conventional pad arrangements, and a second region containing peripheral pixels with specialized pad arrangements. This segmentation allows the peripheral region to be optimized for slim frame design while the internal region maintains standard functionality, resolving the contradiction between frame thickness and device complexity.
2Length of moving object
If peripheral pixels are configured with different pad arrangements to enable slim frame design, then frame thickness is reduced, but the complexity of pixel configuration increases
Solution Approach 1:
The patent introduces asymmetry in the pad configuration by arranging pads in standard pixels along a first direction while arranging pads in peripheral pixels along a second direction that crosses the first direction. This asymmetric configuration optimizes space utilization at the periphery where frame thickness is critical, while maintaining symmetric conventional arrangements in the interior where frame thickness is less constrained.
3Length of moving object
If LED elements are placed closer to the edge of the substrate, then a frameless design is achieved, but the arrangement of pads and driving circuits becomes more difficult
Solution Approach 1:
The patent applies local quality by implementing specialized pad arrangements specifically for peripheral pixels located near the substrate edge. These peripheral pixels have pads arranged in a second direction crossing the first direction, optimizing their layout for edge proximity. This localized optimization makes manufacturing easier at the critical periphery while maintaining standard configurations in the interior.
Solution Approach 2:
The patent segments the pixel array into standard pixels in the first region and peripheral pixels in the second region. This segmentation isolates the manufacturing complexity to only the peripheral region, where the crossed-direction pad arrangement simplifies routing and connection for edge-proximity LED elements, while the bulk of the display maintains straightforward standard configurations.
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 enables the creation of a display device with a slim frame or frameless design by optimizing the arrangement of pixels and pad groups, allowing for closer placement of LED elements to the edge of the substrate and improving flexibility in layout for repair, while maintaining color consistency.
Implementation Method 1
Each of the sub-pixels includes a pad group and a LED element
Implementation Method 2
A light emitting diode (LED) display panel includes an active device substrate and a plurality of LED elements transposed on the active device substrate
Data Source
AI summary
A display device includes a substrate and pixels. The substrate has an intermediate region and a peripheral region. Each of the pixels includes sub-pixels. Each of the sub-pixels includes a pad group and a light emitting diode (LED) element. The pad group has a first pad and a second pad. The LED element is electrically connected to the first pad and the second pad. The pixels include standard pixels disposed in the intermediate region and peripheral pixels disposed in the peripheral region. The first pads and the second pads of the pad groups of the sub-pixels of each of the standard pixels are arranged in a first direction. The peripheral pixels include a first peripheral pixel. The first pads and the second pads of the pad groups of the sub-pixels of the first peripheral pixel are arranged in a second direction, and the first direction crosses over the second direction.