Electro-Optical Device Terminal Routing via Vertical Stacking
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Solution Overview
Problem
The increasing number of terminals in high-definition electro-optical devices leads to larger arrangement areas and increased wiring lengths, causing display quality issues and hindering device miniaturization.
Innovation Solution
The electro-optical device incorporates a substrate with strategically arranged terminals and wirings, where the wiring connected to the third terminal passes between the first and second terminals, reducing the area used for routing and minimizing interference, and includes multiple wiring layers for redundancy and insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of terminals is increased for high-definition display, then the display resolution is improved, but the arrangement area of terminals and wiring area are increased
Solution Approach 1:
The patent applies dimensionality change by transitioning from a planar two-dimensional terminal arrangement to a three-dimensional stacked arrangement. Terminals are positioned at different heights (first terminal at first height, second terminal at second height), allowing vertical stacking that reduces the horizontal footprint. The wiring connects terminals across different levels, utilizing the third dimension to route signals without increasing the device's planar area, thus resolving the contradiction between high-definition requirements and area minimization.
Solution Approach 2:
The patent implements nesting by placing the wiring structure within the vertical space occupied by the terminal arrangement. The wiring is positioned between the first terminal and the substrate, utilizing the available vertical space rather than requiring additional horizontal area. This nested configuration allows multiple components to occupy overlapping projected areas, reducing the overall arrangement area while maintaining high-definition display capabilities.
2Measurement precision
If the number of terminals is increased for high-definition display, then the display resolution is improved, but the length of routed wirings becomes large
Solution Approach 1:
The patent reduces wiring length by utilizing vertical routing in the third dimension. Instead of routing wirings horizontally across the substrate surface, the wiring connects the first terminal (at first height) directly to the substrate through the vertical space between them. This vertical routing path is significantly shorter than horizontal routing paths that would be required in a two-dimensional arrangement, thereby reducing the overall wiring length while supporting increased terminal count for high-definition display.
3Area of stationary object
If terminals are arranged in a zigzag manner to reduce area, then the arrangement area is reduced, but the difference in wiring length becomes large causing display quality issues
Solution Approach 1:
The patent resolves the display quality issue by moving from planar zigzag routing to three-dimensional vertical routing. The wiring connects the first terminal to the substrate through the vertical dimension, creating a direct and uniform signal path. This vertical connection eliminates the cumulative wiring length differences that occur in zigzag arrangements, ensuring uniform signal transmission to all terminals and maintaining high display quality while achieving compact area utilization.
Solution Approach 2:
The patent applies segmentation by separating the terminal arrangement into distinct vertical levels (first terminal at first height, second terminal at second height). This segmentation allows each terminal to have its own optimized vertical connection path to the substrate, independent of other terminals' routing paths. By segmenting the routing into vertical segments rather than continuous horizontal zigzag paths, the patent eliminates wiring length differences while maintaining compact area, thereby preserving display quality.
Data Source
AI summary
An electro-optical device includes a substrate, a first terminal that is formed on the substrate, a second terminal that is formed on the substrate and arranged in a first direction with respect to the first terminal, a third terminal that is formed on the substrate, and arranged in a second direction different from the first direction with respect to the first terminal, and of which the position in the first direction is the same as the first terminal, and a wiring that is formed on the substrate and connected to the third terminal.