Splicing Display Panel Layout With Connecting Line Layer for Seam Reduction
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Solution Overview
Problem
Large-size LED displays are typically achieved by splicing small-sized LED displays, resulting in numerous chip-on-films that create visible seams.
Innovation Solution
A splicing display panel design that integrates a driving substrate with LED substrates, featuring a connecting line layer and LED elements, where the power signal line connects to the first electrodes of the LED elements, reducing the need for chip-on-films and minimizing seams.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If small-sized LED displays are spliced to achieve large-size displays, then the display area is increased, but the number of chip-on-films increases resulting in visible seams
Solution Approach 1:
The patent merges the driving function into a separate driving substrate that can control multiple LED substrates simultaneously. This consolidation reduces the need for individual chip-on-films at each splicing location, as the driving substrate provides centralized control through integrated signal lines that distribute power and control signals across multiple LED modules.
Solution Approach 2:
The driving substrate serves multiple functions: it drives multiple LED substrates, provides power distribution through power signal lines, and enables seamless splicing through reduced chip-on-film usage. This multi-functional design allows a single driving substrate to replace what would traditionally require multiple separate driving components.
2Reliability
If multiple chip-on-films are used to connect LED panels, then electrical connections are established, but visible seams are created affecting display quality
Solution Approach 1:
The patent extracts the driving function from individual LED panels and relocates it to a separate driving substrate. This separation removes the need for chip-on-films at splicing locations, as the driving substrate establishes electrical connections through its integrated signal lines, thereby eliminating the visible seams that would otherwise be created by multiple chip-on-film connections.
Solution Approach 2:
The driving substrate acts as an intermediary between multiple LED substrates, providing centralized power distribution and control signal routing. This intermediary structure enables electrical connections to be established through the driving substrate's signal lines rather than through multiple chip-on-films, thereby maintaining connection reliability while eliminating visible seams.
3Ease of manufacture
If traditional splicing methods are used, then manufacturing is simplified, but alignment accuracy deteriorates
Solution Approach 1:
The patent segments the display system into a dedicated driving substrate and multiple LED substrates. This segmentation allows each component to be manufactured and tested independently with high precision, then assembled together. The driving substrate's integrated design provides reference structures that facilitate precise alignment during assembly, improving overall manufacturing precision while maintaining ease of manufacture through modular construction.
Data Source
AI summary
A splicing display panel is provided. In the present application, at least two light-emitting diode (LED) substrates are disposed on a driving substrate. The driving substrate includes a first conductive pad and a power signal line disposed on a first base. In each LED substrate, a connecting line layer is disposed on a second base and is electrically connected to the power signal line, and LED elements are disposed on the second base, wherein a first electrode of the LED element is electrically connected to the connecting line layer, and a second electrode of the LED element is electrically connected to the first conductive pad.