Display Driving Substrate Wiring Layout for Dense Terminal Routing
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Solution Overview
Problem
The increasing number of output signal bumps and terminals in driving substrates for display panels leads to reduced spacing between them, making it difficult to efficiently place output signal wires without overlap, which can result in misalignment and short-circuiting issues.
Innovation Solution
The use of multiple metal layers to form output signal wires that partially overlap each other between terminals, allowing for closer placement and easier integration of high-function driving circuits with a large number of bumps, while maintaining reliable operation and resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the number of terminals is increased to support higher resolution and additional functions, then the number of output signal bumps and terminals increases, but the spacing between terminals decreases making it difficult to place output signal wires without overlap
Solution Approach 1:
The patent transitions from a single-layer wire configuration to a multi-layer wire structure, utilizing the vertical dimension to place multiple output signal wires between adjacent terminals. This allows wires to overlap in planar view while being separated in different layers, effectively increasing the number of terminals without reducing spacing constraints.
Solution Approach 2:
The patent nests multiple output signal wires within the space between adjacent terminals by forming wires in different layers. The wires are positioned such that they overlap when viewed from above but are physically separated vertically, allowing dense terminal arrangement while maintaining wire integrity.
2Quantity of substance
If multiple output signal wires are placed between adjacent terminals in a single layer, then more wires can be accommodated, but the wires would overlap in planar view causing misalignment and short-circuiting
Solution Approach 1:
The patent resolves the overlap issue by distributing wires across multiple layers instead of confining them to a single layer. Wires that would overlap in planar view are separated vertically through layering, eliminating misalignment and short-circuit risks while maintaining the ability to place multiple wires between adjacent terminals.
Solution Approach 2:
The patent segments the wire placement space into multiple layers, with each layer containing a subset of the output signal wires. This segmentation allows wires to be positioned in different vertical levels, preventing overlap and ensuring reliable electrical connections while accommodating a higher total number of wires.
Data Source
AI summary
A driving substrate of a display panel includes A driving substrate of a display panel, the driving substrate a pixel element, a plurality of terminals, formed by at least one metal layer and placed outside a pixel region in which the pixel element is placed, that are connected separately to each of a plurality of output signal bumps of a driving circuit, and a plurality of output signal wires extending separately from each of the plurality of terminals to the pixel region. The plurality of output signal wires are placed between adjacent two of the plurality of terminals in planar view. The plurality of output signal wires placed between the adjacent two terminals include two or more output signal wires formed by two or more layers. The two or more output signal wires are disposed to at least partially overlap each other in planar view.