Staggered Terminal Arrangement for LCD Wiring and Adhesive Flow
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Solution Overview
Problem
Existing liquid crystal display technologies face challenges in extending wiring lines and maintaining adhesive flowability as the number of output pads increases, leading to connection reliability issues and increased space requirements.
Innovation Solution
The arrangement of terminals into non-overlapping groups with specific shifts in the row and column directions facilitates wiring line extension, reduces space requirements, and ensures smooth adhesive flow, allowing for efficient electrical connections between electronic components and substrates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the number of output pads is increased by adding more rows, then the number of input/output connections is improved, but the wiring lines become difficult to extend and space requirements increase
Solution Approach 1:
The patent transitions from a two-dimensional grid arrangement to a three-dimensional staggered arrangement where terminals in adjacent rows are shifted in the column direction. This dimensional change allows wiring lines to extend more easily by providing offset positions that reduce routing complexity, effectively resolving the contradiction between increasing connection quantity and maintaining wiring extendability.
Solution Approach 2:
The patent introduces asymmetry by shifting terminals in the column direction based on their row position. Terminals in even-numbered rows are shifted by a first amount while terminals in odd-numbered rows are shifted by a second amount, creating an asymmetric staggered pattern. This asymmetric arrangement optimizes wiring line extension paths and reduces space requirements compared to symmetric grid arrangements.
2Quantity of substance
If the number of output pads is increased by adding more rows, then the number of input/output connections is improved, but the adhesive flowability decreases
Solution Approach 1:
By shifting terminals in the column direction based on row position, the patent creates vertical gaps between terminals in adjacent rows. These gaps provide channels for adhesive flow, maintaining flowability even as the number of connections increases. The staggered arrangement prevents terminals from forming a continuous horizontal barrier that would block adhesive flow.
Solution Approach 2:
The patent segments the terminal arrangement into alternating patterns where even-row terminals and odd-row terminals are offset from each other. This segmentation creates natural flow paths for adhesive between the segmented terminal groups, ensuring that adhesive can flow smoothly across the entire bonding area regardless of the number of rows.
3Quantity of substance
If wiring lines are obliquely extended to connect adjacent output pads, then connections are established, but more space is required in the row direction
Solution Approach 1:
Instead of extending wiring lines obliquely in the row direction, the patent shifts terminals in the column direction to create vertical alignment opportunities. This allows wiring lines to extend primarily in the column direction with minimal row-direction extension, reducing the overall space required for wiring while maintaining connection functionality.
Solution Approach 2:
The asymmetric shifting pattern creates optimized wiring paths where even-row terminals and odd-row terminals connect through offset positions. This asymmetric arrangement minimizes the horizontal span required for wiring lines compared to symmetric oblique extensions, reducing the area occupied by wiring infrastructure.
Data Source
AI summary
An electrooptical device includes a substrate and an electronic component mounted on the substrate with an adhesive. The substrate has terminals arranged thereon and wiring lines connected to the terminals and extending in a column direction. The terminals are divided into at least one first terminal group and at least one second terminal group that does not overlap the first terminal group in the column direction. The terminals of the first terminal group are shifted from each other in a row direction so that the adjacent terminals overlap each other in the column direction. The terminals of the second terminal group are shifted from each other in the row direction so that the adjacent terminals overlap each other in the column direction.