CN-122003785-A - Wearable device

CN122003785ACN 122003785 ACN122003785 ACN 122003785ACN-122003785-A

Abstract

The application provides a wearable device (100), which comprises a display screen (10), a bottom shell (20), a first circuit board (30) and a first feed source (V1), wherein the bottom shell (20) comprises a first conductor (21), the first conductor (21) comprises a first feed point (F1), the first circuit board (30) is positioned between the first conductor (21) and the display screen (10), the first circuit board (30) comprises a first conductor layer (31), the first feed source (V1) is arranged on the first circuit board (30), the first feed source (V1) is electrically connected with the first feed point (F1), the first conductor (21) is arranged at intervals with the first circuit board (30), the first feed source (V1) is used for exciting a first antenna structure (A1) through the first feed point (F1), and the first antenna structure (A1) is at least composed of the first conductor (21) and the first conductor layer (31) of the first circuit board (30). The antenna performance of the wearable device (100) under the wearing of the human body is improved by reducing the deteriorating influence of the wearing of the human body on the antenna performance under the condition that the screen duty ratio is higher and higher.

Inventors

CAI XIAOTAO
ZHOU DAWEI
CAO ZHENHUA

Assignees

荣耀终端股份有限公司

Dates

Publication Date: 20260508
Application Date: 20240719
Priority Date: 20231221

Claims (20)

A wearable device, the wearable device comprising: A display screen; A bottom chassis including a first conductor including a first feeding point; the first circuit board is positioned between the first conductor and the display screen and comprises a first conductor layer; The first feed source is arranged on the first circuit board and is electrically connected with the first feed point; The first feed source is used for exciting a first antenna structure through the first feed point to generate a first electromagnetic wave signal, wherein the first antenna structure at least comprises the first conductor and the first conductor layer of the first circuit board.
The wearable device of claim 1, wherein at least a portion of the first conductor is parallel to the first circuit board.
The wearable device of claim 1, wherein the first antenna structure is a cavity antenna structure or a patch antenna structure.
A wearable device according to claim 3, characterized in that the resonance frequency of the first antenna structure is determined based at least on the long side length and/or the short side length of the first conductor.
The wearable device of claim 1, further comprising a second feed and a bezel, the bezel comprising a second conductor; the second conductor comprises a second feed point, the frame is arranged between the display screen and the bottom shell, and a gap is reserved between the second conductor and the first conductor; The second feed source is electrically connected with the second feed point and is used for exciting the second conductor through the second feed point to generate a second electromagnetic wave signal.
The wearable device of claim 5, wherein a gap between the second conductor and the first conductor is at least for the first electromagnetic wave signal to radiate from the wearable device.
The wearable device of claim 6, wherein the first conductor is locally electrically connected with the first conductor layer of the first circuit board.
The wearable device of claim 6, wherein the first conductor is locally electrically connected with the second conductor.
The wearable device of claim 1, wherein the bottom shell further comprises a bottom shell body; the first conductor is a metal sheet arranged on the bottom shell body, or The first conductor is a metal layer formed on the inner surface and/or the outer surface of the bottom shell body through a preparation process.
The wearable device of claim 1, wherein the first feed point is disposed at an edge region or a middle region of the first conductor.
The wearable device according to claim 5, further comprising a third feed source disposed on the first circuit board, wherein the first conductor further comprises a third feed point disposed at a distance from the first feed point, wherein the third feed source is connected to the third feed point and is configured to excite the first antenna structure through the third feed point to generate a third electromagnetic wave signal.
The wearable device of claim 5, wherein the second feed is disposed on the first circuit board.
The wearable device of claim 12, wherein an edge portion of the first conductor layer of the first circuit board proximate the first feed point is electrically connected to the second conductor.
The wearable device of claim 12, wherein the wearable device further comprises a fourth feed, the second conductor further comprises a fourth feed point, the fourth feed point is disposed at a distance from the second feed point, the fourth feed is disposed on the first circuit board and connected to the fourth feed point, and the fourth feed excites the second conductor to generate a fourth electromagnetic wave signal through the fourth feed point.
The wearable device of claim 5, further comprising a second circuit board; the second circuit board is arranged between the first circuit board and the display screen; the second feed source is arranged on the first circuit board or the second circuit board.
The wearable device of claim 15, wherein the second feed is disposed on the first circuit board, the wearable device further comprises a fourth feed, the second conductor further comprises a fourth feed point, the fourth feed is disposed on the second circuit board and connected to the fourth feed point, and the fourth feed excites the second conductor to generate a fourth electromagnetic wave signal through the fourth feed point.
The wearable device of claim 15, wherein the wearable device further comprises a fourth feed, the second conductor further comprises a fourth feed point, the fourth feed is connected to the fourth feed point for exciting the second conductor through the fourth feed point to generate a fourth electromagnetic wave signal, wherein the second feed and the fourth feed are both disposed on the second circuit board.
The wearable device according to any one of claims 15 to 17, further comprising a third conductor, wherein the third conductor is disposed between the first circuit board and the second circuit board and is disposed at a distance from the first circuit board and the second circuit board, a periphery of the third conductor is connected to an inner surface of the second conductor or is spaced from the inner surface of the second conductor by a distance less than or equal to a preset distance, and the third conductor is at least used for isolating electromagnetic wave signals generated by feed excitation disposed on the first circuit board and electromagnetic wave signals generated by feed excitation disposed on the second circuit board from each other.
The wearable device of claim 18, wherein at least a portion of the third conductor is parallel to the second circuit board, the second circuit board includes a second conductor layer, the third conductor includes a fifth feed, the wearable device further includes a fifth feed disposed on the second circuit board, the fifth feed exciting the second antenna structure through the fifth feed to generate a fifth electromagnetic wave signal, wherein the second antenna structure is comprised of at least the third conductor and the second conductor layer of the second circuit board.
The wearable device according to claim 5, wherein the first and second feeding points are projected on the first circuit board at the same or different positions, the first and second electromagnetic wave signals are signals of WiFi, bluetooth, GPS, and cellular signals, and the first and second electromagnetic wave signals are the same or different.

Description

Wearable device The present application claims priority from the chinese patent office, application number 202311777425.9, chinese patent application entitled "wearable device" filed on day 21, 12, 2023, the entire contents of which are incorporated herein by reference. Technical Field The application relates to the technical field of electronic equipment, in particular to wearable equipment. Background As electronic device screens are increasingly more efficient, requiring smaller and smaller gaps between the bezel and the screen, this results in increasingly more difficult electromagnetic wave signals generated by excitation of the antenna assembly by the participation of the screen radiating out of the gap between the bezel and the screen, resulting in poor antenna performance. Therefore, it becomes important how to design an antenna at higher screen ratios. In addition, since the human body is a dielectric, when the wearable device approaches the human body, the human body absorbs electromagnetic energy of the wearable device, resulting in deterioration of antenna performance of the wearable device. According to the theory of electromagnetic field boundary conditions, the tangential component of the electric field relative to the surface of the human body is easy to enter the human body to be absorbed because the human body is a dielectric medium with high dielectric constant, and the normal component of the electric field relative to the surface of the human body is difficult to enter the human body to be absorbed. Therefore, the antenna which presents electric field normal distribution relative to the surface of the human body is designed, so that the influence of human body absorption can be small, and even the performance of the antenna can be enhanced, and the problem of antenna performance deterioration caused by human body absorption after the wearing equipment is worn by the human body can be effectively solved. Disclosure of Invention Therefore, the application provides the wearable device for reducing signal attenuation and further increasing signal coverage. The application provides wearable equipment, which comprises a display screen, a bottom shell, a first circuit board and a first feed source, wherein the bottom shell comprises a first conductor, the first conductor comprises a first feed point, the first circuit board is positioned between the first conductor and the display screen and comprises a first conductor layer, the first feed source is arranged on the first circuit board and is electrically connected with the first feed point, the first conductor is arranged at intervals with the first circuit board, and the first feed source is used for exciting a first antenna structure through the first feed point to generate a first electromagnetic wave signal, wherein the first antenna structure is at least composed of the first conductor and the first conductor layer of the first circuit board. Since the bottom chassis includes the first conductor, rather than generating the electromagnetic wave signal by exciting the metal layer on the display screen, it is unnecessary to radiate the electromagnetic wave signal completely through the slit beside the display screen, and a gap for radiating the first electromagnetic wave signal may be provided between the display screen and the bottom chassis, so that the size of the gap for radiating the first electromagnetic wave signal is not affected in case of higher and higher screen occupation ratio, to reduce attenuation of the first electromagnetic wave signal, and thus increase radiation efficiency of the first electromagnetic wave signal. In a possible embodiment, at least part of the first conductor is parallel to the first circuit board. Because the bottom shell is close to the skin of a human body when the wearable device is worn, the bottom shell comprises a first conductor, the first antenna structure is at least formed by the first conductor and the first conductor layer of the first circuit board, the first feed source is used for exciting the first antenna structure through the first feed point to generate a first electromagnetic wave signal, and at least part of the first conductor is parallel to the first circuit board, so when the first feed source excites the first antenna structure through the first feed point to generate the first electromagnetic wave signal, the first antenna structure is excited to generate an electric field perpendicular to at least part of the first conductor and the first circuit board. Since the first conductor is disposed on the bottom case, the first conductor is also substantially parallel to the bottom case. Therefore, when the wearable device is worn, the electric field generated by the first antenna structure is a normal electric field with respect to the human body, that is, is perpendicular to the skin surface of the part of the human body, and because the human body is not easy to absorb the normal el