Search

EP-4738800-A1 - ELECTRONIC DEVICE

EP4738800A1EP 4738800 A1EP4738800 A1EP 4738800A1EP-4738800-A1

Abstract

This application provides an electronic device. The electronic device includes a housing, a camera module, a first circuit board, and an electrical connection structure. The electrical connection structure includes a metal spring and a screw. A first part of the metal spring is electrically connected to the camera module, and a second part of the metal spring is at least partially fastened to a first circuit board by using the screw. The camera module is electrically connected to a ground terminal of the electronic device by using the metal spring, the screw, and the first circuit board. Alternatively, the electrical connection structure includes a shielding cover, an insulation part, and a first conductive sheet. The shielding cover is electrically connected to the first circuit board, and the insulation part is fastened to the shielding cover. A first part of the first conductive sheet is electrically connected to the camera module, and a second part of the first conductive sheet is at least partially fastened to a side that is of the insulation part and that is away from the shielding cover. The first conductive sheet, the insulation part, and the shielding cover form a capacitor. In this way, reliability of electrical connection for grounding of a coupling current on the camera module is improved.

Inventors

  • YU, Junfeng
  • ZHANG, Baochao
  • ZHANG, XING
  • WANG, TAO

Assignees

  • Huawei Technologies Co., Ltd.

Dates

Publication Date
20260506
Application Date
20241105

Claims (11)

  1. An electronic device (1000), comprising a housing (100), a camera module (200), a first circuit board (310), and an electrical connection structure (400), wherein the electrical connection structure (400) is electrically connected to the camera module (200), and the first circuit board (310) is electrically connected to a ground terminal of the electronic device (1000); and the electrical connection structure (400) comprises a metal spring (440) and a screw (450), a first part (441) of the metal spring (440) is electrically connected to the camera module (200), and a second part (442) of the metal spring (440) is at least partially fastened to the first circuit board (310) by using the screw (450), the camera module (200) is electrically connected to the ground terminal of the electronic device (1000) by using the metal spring (440), the screw (450), and the first circuit board (310); or the electrical connection structure (400) comprises a shielding cover (410), an insulation part (420), and a first conductive sheet (430), wherein the shielding cover (410) is electrically connected to the first circuit board (310), the insulation part (420) is fastened to the shielding cover (410), a first part (431) of the first conductive sheet (430) is electrically connected to the camera module (200), and a second part (432) of the first conductive sheet (430) is at least partially fastened to a side that is of the insulation part (420) and that is away from the shielding cover (410), and the first conductive sheet (430), the insulation part (420), and the shielding cover (410) form a capacitor.
  2. The electronic device (1000) according to claim 1, wherein the insulation part (420) is an insulation adhesive.
  3. The electronic device (1000) according to claim 2, wherein a direct-facing area between the insulation part (420) and the shielding cover (410) is greater than 20 square millimeters.
  4. The electronic device (1000) according to any one of claims 1 to 3, wherein a thickness of the insulation part (420) ranges from 0.03 millimeter to 0.05 millimeter.
  5. The electronic device (1000) according to any one of claims 1 to 4, wherein a thickness of the first conductive sheet (430) ranges from 0.03 millimeter to 0.05 millimeter.
  6. The electronic device (1000) according to any one of claims 1 to 5, wherein the first conductive sheet (430) is a nickel-plated conductive fabric, a gold-plated conductive fabric, a carbon-plated conductive fabric, or an aluminum foil fiber composite fabric; or the first conductive sheet (430) is copper foil.
  7. The electronic device (1000) according to claim 1, wherein the metal spring (440) is a nickel-plated stainless steel sheet or a gold-plated stainless steel sheet.
  8. The electronic device (1000) according to claim 1 or 7, wherein a thickness of the metal spring (440) ranges from 0.2 millimeter to 0.3 millimeter.
  9. The electronic device (1000) according to claim 7 or 8, wherein the second part (442) of the metal spring (440) is provided with a first through hole (4421), the first circuit board (310) is provided with a second through hole (313), the screw (450) is fastened in the first through hole (4421) and the second through hole (313), and the metal spring (440) abuts against the ground terminal of the first circuit board (310).
  10. The electronic device (1000) according to any one of claims 7 to 9, wherein the electrical connection structure (400) further comprises a second conductive sheet, the second conductive sheet is electrically connected to the camera module (200), the second conductive sheet is electrically connected to the metal spring (440), and the camera module (200) is electrically connected to the metal spring (440) by using the second conductive sheet.
  11. The electronic device (1000) according to claim 1, wherein the camera module (200) comprises a lens assembly (290), a casing (230), and a second circuit board (242), the casing (230) is fastened to the second circuit board (242), the casing (230) and the second circuit board (242) enclose accommodation space (231), and the lens assembly (290) is disposed in the accommodation space (231); and the first part (431) of the first conductive sheet (430) is electrically connected to the second circuit board (242); or the first part (441) of the metal spring (440) is electrically connected to the second circuit board (242).

Description

This application claims priority to Chinese Patent Application No. 202311475202.7, filed with the China National Intellectual Property Administration on November 7, 2023, and entitled "ELECTRONIC DEVICE", which is incorporated herein by reference in its entirety. TECHNICAL FIELD This application relates to the field of terminal device technologies, and in particular, to an electronic device. BACKGROUND To improve a screen-to-body ratio of an electronic device and overall aesthetics of a screen of a mobile phone, a front camera module is disposed as close as possible to a housing, and a distance between the front camera module and an antenna built in the housing becomes increasingly small. As a result, a current coupled from the antenna to the front camera module is increasingly large. To avoid that the coupling current affects operating of the camera module, a conductive fabric is disposed to transfer the coupling current on the front camera module to a grounding structure, so that the coupling current on the front camera module is directly grounded. However, reliability of electrical connection between the conductive fabric and the grounding structure through conductive adhesive is poor. As a result, the coupling current on the camera module cannot be smoothly grounded, and affects operating of the camera module. In addition, at a position at which the electrical connection between the conductive fabric and the grounding structure has poor reliability, the coupling current is likely to be radiated into air, generating a radiated spurious emission (radiated spurious emission, RSE) current, and affecting a wireless communication signal. SUMMARY This application provides an electronic device. The electronic device includes a housing, a camera module, a first circuit board, and an electrical connection structure. The camera module and the first circuit board are disposed in the housing, and the electrical connection structure is electrically connected to the camera module. The first circuit board is electrically connected to a ground terminal of the electronic device. The electrical connection structure includes a metal spring and a screw. A first part of the metal spring is electrically connected to the camera module, and a second part of the metal spring is at least partially fastened to a first circuit board by using the screw. The camera module is electrically connected to the ground terminal of the electronic device by using the metal spring, the screw, and the first circuit board. Alternatively, the electrical connection structure includes a shielding cover, an insulation part, and a first conductive sheet. The shielding cover is electrically connected to the first circuit board, and the insulation part is fastened to the shielding cover. A first part of the first conductive sheet is electrically connected to the camera module, and a second part of the first conductive sheet is at least partially fastened to a side that is of the insulation part and that is away from the shielding cover. The first conductive sheet, the insulation part, and the shielding cover form a capacitor. It may be understood that, when the electrical connection structure includes the metal spring and the screw, the metal spring is fastened to the first circuit board by using the screw, and connection strength between the metal spring and the first circuit board is high, thereby reducing a risk that the metal spring falls off from the first circuit board due to impact from external force, and providing good reliability of electrical connection between the metal spring and the first circuit board. A coupling current on the camera module may be well grounded, to reduce a risk of a fault caused by the coupling current on the camera module, and further avoid that the coupling current is radiated into air during transmission due to an unstable electrical connection caused by poor connection reliability between the metal spring and the first circuit board, generating a radiated spurious emission (radiated spurious emission, RSE) current and affecting wireless communication quality. When the electrical connection structure includes the shielding cover, the insulation part, and the first conductive sheet, a coupling current on the camera module is coupled to the ground through the capacitor, in comparison with a solution in which the first conductive sheet is directly electrically connected to the shielding cover through conductive adhesive and the coupling current on the camera module is directly grounded, where the conductive adhesive is made of an insulating material mixed with metal particles, and the metal particles are used for conducting electricity. The metal particles are easily oxidized when exposed to air. Moreover, the metal particles generate heat during electrical transmission, and the heat further accelerates the oxidation of metal particles. After the metal particles are oxidized, a resistivity of the conductive adhesive is