Electro-optical Device Asymmetric Alignment Marks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Liquid crystal devices become inoperable due to incorrect mounting of connection positions between flexible substrates, which can occur when the wiring in multiple flexible substrates differs, leading to misalignment and electrical disconnection.
Innovation Solution
The electro-optical device incorporates alignment marks with distinct shapes on both the liquid crystal panel and circuit substrates, ensuring precise alignment and connection by forming non-overlapping shapes that correspond to each other, allowing for correct positioning and bonding of the substrates without optical system adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple flexible substrates with different wiring are connected to the liquid crystal panel, then the functionality and versatility of the device are improved, but the risk of misalignment and incorrect mounting increases, leading to operational failure
Solution Approach 1:
The patent applies asymmetry by providing distinct panel alignment marks with different shapes (first shape for first terminal portion, second shape for second terminal portion) and corresponding distinct circuit substrate alignment marks. This asymmetric shape coding ensures that each flexible substrate can only be correctly mounted in one orientation, preventing misalignment while maintaining the ability to connect multiple substrates with different wiring configurations.
2Manufacturing precision
If alignment marks with different shapes are provided for different terminal portions, then the precision of alignment during mounting is improved, but the complexity of the device structure increases
Solution Approach 1:
The patent uses asymmetric shape differentiation of alignment marks to enable precise alignment. The first panel alignment mark has a first shape and the second panel alignment mark has a second shape, with corresponding circuit substrate alignment marks that match these shapes. This allows optical detection systems to distinguish between different terminal portions and achieve accurate alignment without requiring complex mechanical positioning systems.
Data Source
AI summary
An electro-optical device includes an electro-optical panel including a pair of first panel alignment marks having a first shape and a pair of second panel alignment marks having a second shape; a first circuit substrate provided with a first circuit substrate alignment mark which is represented by the first shape in plan view; and a second circuit substrate provided with a second circuit substrate alignment mark which is represented by the second shape in plan view.