Wearable Electrode Layout That Preserves Display Area
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Solution Overview
Problem
Existing wearable devices face issues where electrodes occupy the display region of the screen and are prone to poor contact with the human body, affecting detection accuracy.
Innovation Solution
The wearable device design includes a first electrode connected to the screen without shielding the display region, a second electrode on the housing, and both electrodes are connected via a circuit board. The electrodes are positioned oppositely in the thickness direction to facilitate clamping and improve contact stability, with features like grooves and conductive protective layers enhancing electrode placement and protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the first electrode is located on the screen, then the electrode can be positioned for detection, but it occupies the display region and reduces screen area
Solution Approach 1:
The patent transitions the electrode from a two-dimensional screen surface to a three-dimensional structure by extending it along the thickness direction of the wearable device. This allows the electrode to maintain effective contact area while being positioned at the edge of the screen, thus not occupying the display region.
2Area of stationary object
If the first electrode is located on the side surface of the smart band, then the display region is preserved, but the electrode is prone to displacement and causes poor contact
Solution Approach 1:
The electrode extends in the thickness direction to create a protruding structure that combines the benefits of side surface placement (preserving display region) with improved contact stability (reducing displacement).
Solution Approach 2:
The electrode combines conductive material with structural support features, creating a composite structure that maintains both electrical conductivity and mechanical stability for reliable contact.
3Reliability
If the electrode structure is extended in the thickness direction, then contact stability is improved, but the device complexity increases
Solution Approach 1:
The electrode is segmented into distinct functional portions: a contact portion extending in the thickness direction for stable contact, and a connection portion for electrical connection. This segmentation allows each part to be optimized independently while simplifying the overall design.
Data Source
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AI summary
This application provides a wearable device that may be a smart band, a watch, or the like. Specifically, the wearable device includes a screen, a first electrode, a second electrode, and a circuit board. The screen and the second electrode are mounted on a housing, the first electrode is connected to the screen and does not shield a display region of the screen, and the first electrode and the second electrode are electrically connected by using the circuit board. In a thickness direction of the wearable device, the first electrode has a first surface, the second electrode has a second surface, and the first surface and the second surface are used to contact a human body. Such a design can effectively reduce impact of the first electrode on the display region of the screen. In addition, the wearable device can be clamped when a user is in contact with the first surface and the second surface, so that a possibility that the wearable device is displaced relative to the user can be reduced.