Perpendicular Connection Terminals for Electro-Optical Device Inspection
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Solution Overview
Problem
Existing electro-optical devices with zigzag-shaped connection terminals on flexible and circuit boards face challenges in ensuring adequate adhesion area and efficient inspection for positional deviations, leading to potential connection defects and reduced manufacturing efficiency.
Innovation Solution
A mounting structure with first and second connection terminals arranged in perpendicular directions on a substrate, overlapping connection wiring lines with narrower widths, allowing for easier inspection of positional deviations through light transmission or reflection, and reducing the connection area between substrates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If connection terminals are arranged in a zigzag shape in a plurality of lines, then the adhesion area region is reduced, but the inspection for positional deviation becomes difficult and work efficiency is degraded
Solution Approach 1:
The connection terminals are segmented into two distinct groups (first connection terminals and second connection terminals) arranged in different directions. This segmentation allows for easier inspection by creating distinct visual patterns that can be individually detected, resolving the difficulty in detecting positional deviations while maintaining reduced adhesion area.
Solution Approach 2:
The first and second connection terminals are arranged in asymmetric directions relative to each other. This asymmetric arrangement creates distinct geometric patterns that facilitate inspection of positional deviations, as any misalignment would disrupt the expected asymmetric pattern, thereby improving detectability while maintaining compact adhesion area.
2Quantity of substance
If connection terminals are arranged in a zigzag shape in a plurality of lines, then more connection terminals can be provided in the same area, but the adhesion area region cannot be sufficiently ensured
Solution Approach 1:
The connection terminals are arranged in multiple dimensions by providing first connection terminals in a first direction and second connection terminals in a second direction perpendicular to the first direction. This multi-dimensional arrangement allows more connection terminals to be accommodated in the same area while maintaining sufficient adhesion area through the perpendicular arrangement that creates efficient space utilization.
3Reliability
If connection terminals are arranged in a zigzag shape, then electrical connection is achieved, but the inspection for connection defects requires naked eye observation and work efficiency is degraded
Solution Approach 1:
The first and second connection terminals are designed with different characteristics that create distinct visual patterns. This differentiation allows for easy visual inspection of connection defects through the pattern recognition capability, eliminating the need for naked eye observation and significantly improving work efficiency while maintaining reliable electrical connections.
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
This configuration enhances manufacturing efficiency by allowing for precise inspection of positional deviations and connection defects, ensuring stable quality with reduced connection area and improved display characteristics in electro-optical devices.
Implementation Method 1
inspection for a positional deviation can be performed by irradiating light onto the mounting structure from one side thereof and observing transmitted light from the other side thereof
Implementation Method 2
the inspection for a positional deviation can be performed by reflection. Specifically, light may be irradiated onto the mounting structure from a first substrate side, and a difference in intensity (color difference) of reflected light by the connection wiring line and reflected light by the third connection terminal may be observed
Data Source
AI summary
A mounting structure includes a first substrate that has a first surface and a second surface, a plurality of first connection terminals that are disposed on the first surface in a first direction, a plurality of second connection terminals that are disposed on the first surface in a second direction perpendicular to the first direction and that are disposed at predetermined gaps from the first connection terminals, a plurality of connection wiring lines that are disposed on the second surface, each having first portions that overlap the first and second connection terminals in plan view and a second portion that is formed to have a width narrower than those of the first and second connection terminals in the first direction, a plurality of through holes that pass through the first substrate so as to correspondingly connect the second connection terminals to the connection wiring lines, and a second substrate that has a plurality of third connection terminals correspondingly connected to the first and second connection terminals and correspondingly overlap the first and second connection terminals in plan view.