Bendable Circuit Substrate for Seamless Tiled Displays
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Solution Overview
Problem
Tiled display devices experience image discontinuities due to frame widths at the interfaces between adjacent display panels, which affect the seamless display experience.
Innovation Solution
A display device design featuring a circuit substrate with bendable extending portions that allow pixel areas to be bent around the backlight module, incorporating a second pixel area within the sealant layer to eliminate image discontinuities, and utilizing a gate on array to integrate liquid crystal and light-emitting diodes on the same substrate, increasing wiring space and reducing manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple display panels are tiled together to achieve large-sized displays, then the display area is increased, but image discontinuities occur at the interfaces between adjacent panels due to frame widths
Solution Approach 1:
The circuit substrate extends from the central region toward the edge of the pixel area, utilizing the edge region of the display panel to accommodate circuit components. This dimensional extension allows the pixel area to be positioned closer to the physical boundary, thereby reducing the frame width and minimizing image discontinuities at panel interfaces.
Solution Approach 2:
The patent employs a bendable extending portion in the circuit substrate that can be folded or curved to route around the backlight module. This curved path arrangement optimizes space utilization and allows pixel units to be densely packed near the panel edges while maintaining proper circuit connections, thus reducing visible frame widths.
2Ease of manufacture
If the circuit substrate is designed with a fixed rigid structure, then manufacturing is simplified, but wiring space is limited and manufacturing costs increase
Solution Approach 1:
The circuit substrate incorporates a bendable extending portion that can be flexed or folded during assembly to route around the backlight module. This dynamic flexibility allows the substrate to adapt to the three-dimensional arrangement of components, providing sufficient wiring space without requiring a complex rigid structure, thereby maintaining manufacturing simplicity while increasing wiring capacity.
3Ease of manufacture
If the circuit substrate extends to accommodate more wiring space, then manufacturing costs are reduced, but the structure becomes more complex
Solution Approach 1:
The circuit substrate is divided into a central region containing pixel units and a separate bendable extending portion that routes around the backlight module. This segmentation allows the main pixel array to remain simple while the extending portion provides the necessary wiring space. The modular design simplifies manufacturing by allowing separate fabrication and assembly of different regions, reducing overall manufacturing costs despite the extended structure.
Data Source
AI summary
A display device includes a backlight module and a first circuit substrate. The first circuit substrate has a central portion and a first extending portion. The central portion has a first pixel area having first pixel units and a second pixel area having second pixel units. The second pixel units collectively surround the first pixel units. The first extending portion includes a first bending portion and a second bending portion. The first bending portion is connected to a first side of the central portion and configured to be bent to a side surface of the backlight module. The second bending portion is connected to the central portion through the first bending portion and configured to be bent below the backlight module. The second bending portion has a first gate on array communicatively connected to one of the first pixel units and the second pixel units.