Sunken Layer Design for Fingerprint Sensor Integration
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Solution Overview
Problem
As portable electronic devices with increasing touch screen display sizes face challenges in accommodating hardware modules on the front surface, these modules often need to be relocated to the rear, potentially interfering with the touch screen display and its layers, leading to adverse effects.
Innovation Solution
An electronic device design that incorporates a hardware module within a sunken area or recessed portion of a layer beneath the touch screen display, allowing for the placement of components like fingerprint sensors and digitizers without direct interference, utilizing a housing structure with a first and second plate and a side member, and including a flexible printed circuit board with a conductive pattern.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If hardware modules are disposed on the rear surface of the touch screen display to accommodate larger display sizes, then the display area is improved, but the hardware modules and layers may adversely affect each other directly or indirectly
Solution Approach 1:
The patent introduces a sunken area that creates a vertical dimension separation between the touch screen display and hardware modules. The layer is recessed at a first position to form this sunken area, positioning the fingerprint sensor module below the main display plane. This dimensional change allows the display area to be maximized while preventing adverse interactions between modules and layers through vertical separation.
2Ease of operation
If hardware modules are mounted on the front surface of the electronic device, then module accessibility is improved, but the touch screen display size is reduced
Solution Approach 1:
The patent implements a nested structure where the fingerprint sensor module is disposed within the sunken area of the layer. The layer itself is nested within the housing structure, creating a hierarchical arrangement. This nesting allows hardware modules to be integrated into the device structure without occupying front surface area, maintaining both display size and module functionality.
3Adaptability or versatility
If a sunken area is formed in the layer to mount hardware modules, then module integration is improved, but the layer structure becomes more complex
Solution Approach 1:
The patent applies local quality by creating a sunken area only at specific positions of the layer where hardware modules need to be mounted. The layer maintains its normal flat structure in other areas, and only the first position is recessed to form the sunken area. This localized modification provides the necessary integration capability while minimizing the overall structural complexity of the layer.
Data Source
AI summary
An electronic device is provided. The electronic device includes a housing including a first plate, a second plate facing away from the first plate, and a side member surrounding a space between the first plate and the second plate, a touch screen display disposed between the first plate and the second plate, a fingerprint sensor, a digitizer including a layer having a conductive pattern, and a processor. The layer includes a first portion positioned between the second plate and a second area of the touch screen display that surrounds the first area when viewed from above the first plate and a second portion continuously extending from the first portion, the second portion positioned such that the fingerprint sensor is disposed between the second portion and the touch screen display, and such that the second portion is closer to the second plate than the first portion.