Imaging Substrate With Inclined Opening And Light Control Layers
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Solution Overview
Problem
In imaging devices with ceramic insulating bases, the area around the opening can deform and contact the imaging element, leading to noise in image reception due to excessive light transmission through the thinned insulating base.
Innovation Solution
An imaging element mounting substrate with a plurality of insulating layers and light-transmission control layers surrounding the opening, where the inner edges of the light-transmission control layers are positioned to create an inclined portion that reduces the opening size from the lower surface to the upper surface, minimizing light transmission and preventing contact with the imaging element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the insulating base thickness is reduced around the opening, then manufacturing complexity is decreased, but light transmission increases causing noise
Solution Approach 1:
The light-transmission control layers are applied locally only in the region surrounding the opening, rather than requiring complex variable thickness control across the entire insulating base. This localized application simplifies manufacturing by focusing the light-blocking function to a specific area, achieving effective light shielding without the need for complex overall thickness variation in the insulating base structure.
Data Source
AI summary
An imaging element mounting substrate includes: an insulating base comprising insulating layers, the insulating base surface comprising an opening which is located at a center thereof; a connection electrode disposed at a lower surface of the insulating base around the opening; and light-transmission control layers between the insulating layers, and comprising inner edges located on an outside of the opening. An inner edge of one light-transmission control layer lies closer to the opening than an inner edge of another light-transmission control layer as seen in a transparent plan view, and the insulating base has, in an inner periphery of the opening of an insulating layer constituting a lower surface of the insulating base, an inclined portion which is inclined such that the opening becomes smaller in size from the lower surface as approaching an upper surface of the insulating base.