Endoscope Image Pickup Apparatus Sealing with Integral Curable Resin
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Solution Overview
Problem
Existing image pickup apparatuses for endoscopes are not adequately miniaturized, leading to invasiveness issues, and current manufacturing methods do not effectively seal and fix the bonding sections between electrodes and flying leads, which can result in reliability concerns.
Innovation Solution
An image pickup apparatus with a flexible and non-flexible member configuration, where the flying lead is bent and bonded to the second electrode, and sealed with integral curable resin, ensuring the distal end surface of the non-flexible member adheres to the image pickup device, simultaneously sealing and fixing the bonding section.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the image pickup apparatus is miniaturized to achieve minimal invasiveness, then the invasiveness is improved, but the reliability of bonding sections between electrodes and flying leads deteriorates
Solution Approach 1:
The patent combines the sealing function and fixing function into a single integral curable resin structure. The resin simultaneously seals the bonding section between the flying lead and second electrode, and fixes the distal end surface of the non-flexible member to the image pickup device, eliminating the need for separate sealing and fixing components. This merging approach maintains reliability while enabling miniaturization.
Solution Approach 2:
The patent uses integral curable resin as a composite material that provides both sealing and adhesion properties. The resin formulation combines sealing capabilities to protect the bonding section with adhesion capabilities to secure the non-flexible member to the image pickup device, achieving dual functionality in a single material system.
2Reliability
If separate sealing resin and adhesive are used, then the sealing and adhesion functions are preserved, but the device complexity and manufacturing steps increase
Solution Approach 1:
The patent merges the sealing resin and adhesive into a single integral curable resin component. This single resin performs both sealing of the bonding section and adhesion of the non-flexible member to the image pickup device, reducing component count and simplifying the manufacturing process by eliminating the need for separate application steps.
Solution Approach 2:
The integral curable resin serves multiple functions simultaneously: it seals the bonding section between the flying lead and electrode, it adheres the non-flexible member to the image pickup device, and it provides mechanical reinforcement. This multi-functional approach reduces device complexity while maintaining all necessary functions.
3Ease of manufacture
If the bonding section is not adequately sealed and fixed, then the manufacturing process is simplified, but the mechanical reinforcement and protection against stress are insufficient
Solution Approach 1:
The patent combines sealing and mechanical fixing functions into a single integral curable resin structure that simultaneously protects the bonding section and reinforces it against mechanical stress. This approach maintains ease of manufacture by using a single material application process while providing adequate strength through the resin's inherent mechanical properties.
Solution Approach 2:
The integral curable resin is formulated as a composite material that provides both sealing protection and mechanical strength. The resin's composition enables it to withstand mechanical stress while maintaining the seal integrity, achieving both ease of manufacture and adequate strength reinforcement.
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
The solution allows for a compact image pickup apparatus with enhanced reliability due to mechanical reinforcement of the sealing section, preventing damage from stress and ensuring effective sealing and adhesion, thus achieving miniaturization and improved invasiveness in endoscope applications.
Implementation Method 1
a bonding section between the second electrode in the image pickup device and the distal end portion of the flying lead is sealed with a sealing member, the distal end surface of the non-flexible member is made to adhere to the rear surface of the image pickup device with an adhesion member interposed between the surfaces, and the sealing member and the adhesion member are composed of integral curable resin
Data Source
AI summary
An image pickup apparatus includes an image pickup device including a wiring connecting a first electrode on a light receiving surface and a second electrode on a rear surface, a first wiring board including a distal end surface, from which a flying lead protrudes, arranged to oppose the rear surface of the image pickup device, a second wiring board including a second main surface to which an upper surface of the first wiring board is made to adhere and including a distal end surface arranged to oppose the rear surface, in which the flying lead is bent and bonded to the second electrode, and a sealing member sealing a bonding section between the second electrode and the flying lead and an adhesion member that makes the distal end surface of the second wiring board and the rear surface adhere to each other are composed of integral curable resin.