Inkjet-Printed Panel Splicing for Narrow-Seam LED Displays
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Solution Overview
Problem
Current methods for splicing mini-LED or micro-LED display screens, such as side binding or back binding, are complex and require high precision, making them difficult to perform effectively.
Innovation Solution
A display screen splicing method that involves aligning pads on two panels and manufacturing conductive connecting portions using inkjet printing to connect these pads, thereby simplifying the process and reducing device precision requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If side binding or back binding is used for splicing, then narrow-seam splicing can be achieved, but the process becomes complex and device precision requirements increase
Solution Approach 1:
The patent extracts and eliminates the complex side wire process from the splicing method. Instead of using side binding or back binding techniques that require extensive wiring and high precision alignment, the invention directly connects corresponding pads between adjacent panels through simple conductive adhesive application, removing the disturbing side wire process entirely
Solution Approach 2:
The patent replaces the mechanical side binding or back binding process with a chemical bonding approach using conductive adhesive. Instead of mechanical wiring and high-precision mechanical alignment, the invention uses adhesive material to both bond and electrically connect the pads, substituting a complex mechanical system with a simpler chemical bonding process
2Manufacturing precision
If side binding or back binding is used for splicing, then narrow-seam splicing can be achieved, but the requirements for devices precision increase
Solution Approach 1:
The conductive adhesive performs dual functions simultaneously: it provides mechanical bonding between panels and establishes electrical connections between pads. This self-service approach eliminates the need for separate wiring processes and reduces the number of steps required, making manufacturing easier while maintaining precision
Solution Approach 2:
The patent merges the bonding function and electrical connection function into a single conductive adhesive material and application process. Instead of separately performing mechanical bonding and electrical wiring, the invention combines both functions into one step, simplifying the manufacturing process while achieving the same technical results
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
The method simplifies the splicing process, reduces device precision requirements, and enables narrow-seam splicing by eliminating the need for side or back traces, while ensuring effective signal transmission between panels.
Implementation Method 1
curing the conductive droplets to form the conductive connecting portions
Implementation Method 2
the curing includes thermocuring or photocuring
Data Source
AI summary
A display screen splicing method and a spliced display screen are provided. According to the display screen splicing method provided in the embodiments of the present disclosure, a first to-be-spliced panel is connected to a second to-be-spliced panel in a splicing area using conductive connecting portions. In addition, the conductive connecting portions are manufactured by inkjet printing to perform connection between the two adjacent to-be-spliced panels by using signals, so as to realize narrow-seam splicing. By means of the display screen splicing method provided in the embodiments of the present disclosure, the process is simplified, and the precision requirements for devices are reduced.