Lens Attachment Assembly with End Cap Extension
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Solution Overview
Problem
The increasing trend towards larger smartphone screens and reduced border regions on device housings limits the available surface area for securely attaching a front lens, making it prone to delamination under external stresses.
Innovation Solution
An assembly that includes end caps coupled to the circuit substrate, extending into the space between the substrate and the housing's front edge, providing an additional area for lens attachment, which includes a raised surface for the lens to adhere to, enhancing the bond strength and resistance to external forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the border region of the housing is reduced to maximize screen size, then the screen area is improved, but the attachment area for the lens on the housing is reduced
Solution Approach 1:
The patent extends the lens attachment area from the two-dimensional housing surface into the third dimension by incorporating the end cap structure that protrudes from the housing. This allows the lens to be attached to a surface that extends beyond the housing border region, effectively increasing the attachment area without increasing the housing border size.
Solution Approach 2:
The end cap acts as an intermediary structure between the housing and the lens. It provides an additional attachment surface that mediates the connection, allowing the lens to be securely mounted even when the housing border region is minimized for screen size optimization.
2Strength
If the lens attachment area is increased to improve bond strength, then the resistance to delamination is improved, but the device complexity increases
Solution Approach 1:
The end cap structure serves multiple functions: it provides structural support for the circuit substrate, extends the housing profile, and creates an additional attachment surface for the lens. By combining these functions into a single component, the patent increases lens bond strength without proportionally increasing device complexity.
Solution Approach 2:
The patent merges the end cap structure with the housing and circuit substrate mounting functions. The end cap is integrated into the overall device structure, combining structural support and lens attachment functions into a unified design rather than adding a separate, complex attachment mechanism.
Data Source
AI summary
The present invention provides an assembly for attaching a lens to a housing of a device. The assembly includes a housing having a front opening, and a front edge which extends at least partially around the front opening, and a circuit substrate coupled to the housing. The assembly further includes one or more end caps coupled to the circuit substrate, the one or more end caps each having a front facing surface, where each end cap extends at least partially into the space between the circuit substrate and the front edge of the housing. A lens is coupled to the housing at the front edge and the front facing surface of the end cap.