Optical Element Electrode Connection for Compact Displays
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Solution Overview
Problem
Conventional liquid crystal display devices face challenges in achieving a wide view angle to narrow view angle transition due to space constraints and reliability issues in connecting optical elements to external circuits, leading to variations in display and potential short circuits in compact mobile devices.
Innovation Solution
An optical element with substrates bonded together, having electrodes on the same side and a light-adjusting material in the gap, allowing for connection to an external circuit without opposing electrode portions, which reduces the need for opening terminal connections, preventing seal peeling and short circuits, and enabling space-saving design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the optical element is thinned by using a film substrate, then the thickness and weight are reduced, but the gap in the silver paste portion increases causing display variations
Solution Approach 1:
The patent divides the electrode connection structure into two separate connection portions on opposite sides of the optical element. This segmentation allows each connection portion to be independently designed and positioned, enabling the use of thin film substrates while maintaining proper electrode alignment and preventing display variations caused by gap inconsistencies.
2Reliability
If both substrates are connected to external circuits, then electrical connection reliability is improved, but the frame width and space requirements increase
Solution Approach 1:
The patent transitions from a single-sided electrode connection approach to a dual-sided connection approach, utilizing the dimensional space available on both sides of the optical element. This allows electrical connections to be distributed across opposite sides, reducing the frame width requirement on any single side while maintaining reliable electrical connection to both substrates.
3Volume of moving object
If the terminal connecting portion space is reduced for compact mobile devices, then device compactness is improved, but the space for connecting optical elements to external circuits becomes insufficient
Solution Approach 1:
The patent employs asymmetric positioning of electrode connection portions on opposite sides of the optical element, allowing the terminal connecting structure to be optimized for compact mobile devices. The asymmetric design enables efficient space utilization by distributing connection points strategically, providing sufficient connection space within the constrained volume of mobile devices.
4Reliability
If opposing electrode portions are used in substrate connections, then electrical connection is achieved, but seal peeling and short circuits occur
Solution Approach 1:
The patent extracts the electrode connection function from a single opposing configuration and redistributes it to separate connection portions on opposite sides. This extraction and redistribution eliminates the problematic overlap region where seal peeling and short circuits occur, while maintaining effective electrical connection between substrates and external circuits.
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 the yield and reliability of the optical element, allowing it to be stored in a compact space while enabling variable lighting angle ranges, supporting both wide and narrow view angle displays in mobile devices.
Implementation Method 1
a light adjusting material including a liquid crystal is enclosed in the gap
Data Source
AI summary
An optical element comprises a pair of substrates each having an electrode and bonded together with a gap therebetween and a light adjusting material including a liquid crystal and enclosed in the gap. Each of the pair of substrates has an electrode connecting portion to be connected to an external circuit. At least a part of the electrode connecting portion of each of the substrates is located on the same side as that of the optical element. The electrode connecting portion of one of the substrates and the electrode connecting portion of the other of the substrates have respective electrode portions at regions that are not opposed to each other. The electrode portion of each of the electrode connecting portions is connected to the external circuit.