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CN-117173753-B - Fingerprint module and electronic equipment

CN117173753BCN 117173753 BCN117173753 BCN 117173753BCN-117173753-B

Abstract

The application discloses a fingerprint module and electronic equipment. The fingerprint module comprises a substrate, a detection module and an ultrasonic circuit module, wherein the detection module is arranged on the substrate, the detection module comprises at least two detection units, orthographic projections of the detection units in a first direction are at least partially overlapped, the detection directions of the detection units are staggered, and the first direction is the thickness direction of the substrate. Through setting up at least two detection units that the orthographic projection at the first direction at least partially coincides in detection module, and the detection direction of each detection unit is crisscross to be set up, through improving the integrated level of each detection unit in the detection module, reduces detection module's area ratio at the base plate surface, when realizing that detection module provides multidirectional pressure sense and detects, need not to increase fingerprint module's overall dimension, and can improve ultrasonic circuit module's area ratio at the base plate surface to improve fingerprint module's performance.

Inventors

  • JIN CHANGCHUN

Assignees

  • 维沃移动通信有限公司

Dates

Publication Date
20260505
Application Date
20230919

Claims (9)

  1. 1. A fingerprint module, comprising: A substrate; The detection module is arranged on the substrate, at least two detection units are arranged in the detection module, orthographic projections of the detection units in a first direction are at least partially overlapped, the detection directions of the detection units are staggered, and the first direction is the thickness direction of the substrate; the ultrasonic circuit module is arranged on the substrate and is electrically connected with the detection module, The detection unit comprises four bridge arms and four intersection points which are connected with each other, wherein two adjacent bridge arms are connected at the intersection points and are electrically connected with the substrate, The detection module comprises n detection units, the n-1 detection unit is sleeved outside the n detection unit, the intersection point of the n detection unit is electrically connected with the bridge arm of the n-1 detection unit, n is more than or equal to 2, The detection module further comprises a switch assembly, wherein the switch assembly is used for controlling the on-off state and the off-off state of each detection unit.
  2. 2. The fingerprint module of claim 1, wherein the detection unit is a wheatstone bridge.
  3. 3. The fingerprint module of claim 2, wherein the detecting units are rectangular, the detecting direction is a direction parallel to the rectangular sides, and the detecting directions of the detecting units are in an arithmetic progression.
  4. 4. A fingerprint module according to any one of claims 1-3, wherein each of said detecting units is stacked in said first direction with an insulating layer provided between adjacent ones of said detecting units.
  5. 5. The fingerprint module of claim 4, wherein the detection unit comprises a first detection unit and at least one second detection unit, and wherein an orthographic projection of the second detection unit in the first direction is located in the first detection unit.
  6. 6. The fingerprint module of claim 1, wherein the switch assembly includes a switch member, the bridge arms include a first portion and a second portion connected to each other, and in one of the detecting units, both ends of the first portion of each bridge arm are connected to two of the second portions, respectively, the switch member is disposed in the second portions, When the second part of the nth detection unit is in a passage state, the second part of the nth detection unit is in an open circuit state, and the bridge arm of the nth detection unit is electrically connected with the first part of the nth detection unit.
  7. 7. The fingerprint module of claim 6, wherein the resistance values of the first portions of the same detection unit are the same, and/or the resistance values of the second portions of the same detection unit are the same.
  8. 8. The fingerprint module of claim 6, wherein the bridge arm includes a resistive member, the resistive member being located in the second portion.
  9. 9. An electronic device comprising a fingerprint module according to any one of claims 1-8.

Description

Fingerprint module and electronic equipment Technical Field The application relates to the technical field of electronic equipment, in particular to a fingerprint module and electronic equipment. Background With the development of technology and the increase of the requirements of people for the functions of multiple scenes of mobile phones, the technical application of the under-screen pressure sensing ultrasonic fingerprint is also increasingly touted by people. In the design of the under-screen pressure-sensing ultrasonic fingerprint, under the background that the pressure-sensing experience requirement of a user is higher and higher, the fingerprint detection module needs to improve the multi-directional pressure-sensing detection performance, and this often leads to the increase of the occupied area of the detection module in the fingerprint module, so that the performance of the fingerprint module is reduced. Disclosure of Invention The embodiment of the application provides a fingerprint module and electronic equipment, which can solve the problems of increased area occupation ratio of a detection module in the fingerprint module on the surface of a substrate, lower ultrasonic circuit module area and reduced fingerprint module performance in order to improve the multi-directional pressure sensing detection performance of the fingerprint module in the prior art. In a first aspect, an embodiment of the application provides a fingerprint module, which comprises a substrate, a detection module, an ultrasonic circuit module and a detection module, wherein the detection module is arranged on the substrate, the detection module comprises at least two detection units, orthographic projections of the detection units in a first direction are at least partially overlapped, the detection directions of the detection units are staggered, the first direction is the thickness direction of the substrate, and the ultrasonic circuit module is arranged on the substrate and is electrically connected with the detection module. In a second aspect, an embodiment of the present application provides an electronic device, including the fingerprint module set of the embodiment of the first aspect. In this way, in the fingerprint module and the electronic device provided by the embodiments of the present application, the fingerprint module includes a substrate, a detection module and an ultrasonic circuit module, where the detection module and the ultrasonic circuit module are disposed on the substrate, the detection module includes at least two detection units, orthographic projections of each detection unit in a first direction at least partially overlap, and detection directions of each detection unit are staggered, so that the detection module can provide a multi-directional pressure sensing detection function, and the area occupation ratio of the detection module on the surface of the substrate can be reduced while the pressure sensing experience of a user is improved. Therefore, in the embodiment of the application, through at least two detection units which are arranged in the detection module and at least partially overlapped in orthographic projection in the first direction, and the detection directions of the detection units are staggered, the area occupation ratio of the detection module on the surface of the substrate is reduced by improving the integration level of each detection unit in the detection module, the detection module is realized to provide multi-directional pressure sensing detection, the whole size of the fingerprint module is not required to be increased, and the area occupation ratio of the ultrasonic circuit module on the surface of the substrate is improved, so that the performance of the fingerprint module is improved. Drawings In order to more clearly illustrate the technical solution of the embodiments of the present application, the drawings that are needed to be used in the embodiments of the present application will be briefly described, and it is possible for a person skilled in the art to obtain other drawings according to these drawings without inventive effort. FIG. 1 is an exploded view of a fingerprint module according to some embodiments of the present application; FIG. 2 is a schematic diagram of a portion of a fingerprint module according to some embodiments of the present application; FIG. 3 is a schematic diagram illustrating a detection direction of a detection unit of a fingerprint module according to some embodiments of the present application; FIG. 4 is a schematic diagram of a portion of a fingerprint module according to some embodiments of the present application; FIG. 5 is a side view of a portion of a fingerprint module according to some embodiments of the present application; FIG. 6 is a schematic diagram illustrating a structure of a detection module according to some embodiments of the present application; FIG. 7 is a schematic diagram illustrating a detection module of