WO2022116121A1 - Module de détection de pression et appareil électronique - Google Patents

Module de détection de pression et appareil électronique Download PDF

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Publication number
WO2022116121A1
WO2022116121A1 PCT/CN2020/133711 CN2020133711W WO2022116121A1 WO 2022116121 A1 WO2022116121 A1 WO 2022116121A1 CN 2020133711 W CN2020133711 W CN 2020133711W WO 2022116121 A1 WO2022116121 A1 WO 2022116121A1
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WO
WIPO (PCT)
Prior art keywords
electrode
pressure detection
detection module
module according
circuit board
Prior art date
Application number
PCT/CN2020/133711
Other languages
English (en)
Chinese (zh)
Inventor
黄瑞朗
蔡军
徐兴浪
肖鹏
Original Assignee
深圳市汇顶科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市汇顶科技股份有限公司 filed Critical 深圳市汇顶科技股份有限公司
Priority to PCT/CN2020/133711 priority Critical patent/WO2022116121A1/fr
Publication of WO2022116121A1 publication Critical patent/WO2022116121A1/fr

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means

Definitions

  • the present application relates to the field of electronic technology, and in particular, to a pressure detection module and an electronic device.
  • Electronic devices such as earphones can detect whether they are pressed through the pressure detection module installed inside, so as to perform operation control corresponding to the pressing.
  • the pressure detection module installed in the earphone determines whether the earphone is pressed, so as to control the playback of music in the earphone.
  • the pressure detection module is usually installed in a small space of an electronic device. How to reduce the internal space of the electronic device occupied by the pressure detection module, especially the thickness of the electronic device, has become an urgent technical problem to be solved.
  • one of the technical problems solved by the embodiments of the present application is to provide a pressure detection module and an electronic device to partially or completely solve the technical problems existing in the prior art.
  • an embodiment of the present application provides a pressure detection module, the pressure detection module is disposed on the inner surface of a casing of an electronic device, and the pressure detection module includes: a first electrode, a second electrode, and a support member ; the first surface of the first electrode is fixed to the inner surface of the force input area of the casing, the support is fixed to the inner surface of the casing and the fixed position of the support is the same as that of the first electrode There is an interval between the fixed positions, and the support member supports the first surface of the second electrode so that the second surface of the second electrode is opposite to the second surface of the first electrode and the first electrode is opposite to the second surface of the first electrode.
  • an embodiment of the present application provides an electronic device, wherein a housing of the electronic device has at least one pressure detection module as described above.
  • the support member is fixed to the inner surface of the force input area of the casing.
  • the inner surface supports the first surface of the second electrode, so that the second surface of the second electrode is opposite to the second surface of the first electrode and there is a compressible insulating layer between the first electrode and the second electrode.
  • the pressure detection module of the embodiment of the present application only needs to be installed on the inner surface of the force input area of the housing to realize pressure detection, no bracket is required, and the thickness of the pressure detection module is small, thereby facilitating the installation of other components inside the electronic device.
  • FIG. 1 is a structural diagram of a pressure detection module provided by an embodiment of the application.
  • FIG. 2 is a structural diagram of another pressure detection module provided by an embodiment of the present application.
  • FIG. 3 is a structural diagram of yet another pressure detection module provided by an embodiment of the present application.
  • FIG. 4 is a structural diagram of yet another pressure detection module provided by an embodiment of the present application.
  • FIG. 5 is a structural diagram of yet another pressure detection module provided by an embodiment of the present application.
  • FIG. 6 is a structural diagram of yet another pressure detection module provided by an embodiment of the present application.
  • FIG. 7 is a structural diagram of yet another pressure detection module provided by an embodiment of the present application.
  • FIG. 8 is a structural diagram of yet another pressure detection module provided by an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of an earphone according to an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of another earphone provided by an embodiment of the application.
  • FIG. 11 is a schematic structural diagram of still another earphone according to an embodiment of the present application.
  • the embodiments of the present application provide a pressure detection module and an electronic device, and the specific implementation of the embodiments of the present invention will be further described below with reference to the accompanying drawings of the embodiments of the present invention.
  • FIG. 1 is a structural diagram of a pressure detection module provided by the first embodiment of the present application.
  • the pressure detection module 10 is disposed on the inner surface of the casing 20 of the electronic device.
  • the pressure detection module 10 includes a first electrode 101 , a second electrode 102 and a support member 106 .
  • the first surface of the first electrode 101 is fixed to the inner surface of the force input area of the casing 20, the support member 106 is fixed to the inner surface of the casing 20 with a space between the fixed position of the support member 106 and the fixed position of the first electrode 101.
  • the support member 106 supports the first surface of the second electrode 102 so that the second surface of the second electrode 102 is opposite to the second surface of the first electrode 101 and there is a compressible insulating layer between the first electrode and the second electrode .
  • the force input area of the housing 20 drives the first electrode 101 to move in the direction of the second electrode 102 according to the received external pressure, so as to change the capacitance between the first electrode 101 and the second electrode 102 to determine the pressure against the external pressure Test results.
  • the force input area of the housing 20 is an area of any shape
  • the force input area can use any sign to indicate that the user can apply pressure in this area
  • the position of the center of the force input area corresponds to the position of the center of the first electrode, so that the user can
  • the external pressure exerted by the force input area drives the first electrode to move in the direction of the second electrode.
  • the compressible insulating layer between the first electrode and the second electrode is an air gap.
  • the center of the force input area deforms the most, and the inner surface corresponding to the center of the force input area is the center of the first electrode 101 .
  • the force input area of the casing 20 receives an external force, the first electrode 101 fixed to the casing 20 deforms with the deformation of the casing 20 , and the center of the first electrode 101 deforms the most.
  • the support member 106 Since the support member 106 is fixed to the inner surface of the casing 20 and there is a gap between the fixed position of the support member 106 and the fixed position of the first electrode 101 , the support member 106 supports the first surface of the second electrode 102 so that the second electrode The second surface of the 102 is opposite to the second surface of the first electrode 101 and has a compressible insulating layer, so the second electrode 102 is displaced with the deformation of the support fixed to the housing. Since the deformation displacement of the center of the first electrode 101 is larger than the deformation displacement of the fixed position of the support member, the compressible insulating layer between the first electrode 101 and the second electrode 102 is changed, so that the first electrode 101 and the second electrode 102 are changed. The capacitance between the electrodes 102 changes, and the pressure detection result of the external pressure can be determined according to the capacitance change.
  • the pressure detection module of the embodiment of the present application only needs to be installed on the inner surface of the force input area of the housing to realize pressure detection, without the need for a bracket and the thickness of the pressure detection module is small, which facilitates the installation of other components inside the electronic device, and facilitates the installation of other components inside the electronic device. Reduce the interference effect of pressure detection module and other electronic components in miniaturized electronic equipment.
  • the support member 106 includes: two bending parts 1061 and an attaching part 1062 , the first end of each bending part 1061 is located at the end of the attaching part 1062 and is bent
  • the second end of the part 1061 is fixed to both sides of the fixed position of the first electrode 101 on the inner surface of the casing 20 , the first surface of the second electrode 102 is attached to the attachment part, and the bending part 1061 makes the second electrode 1062 on the attachment part 1062 attached.
  • the second surface of the electrode 102 is opposite the second surface of the first electrode 101 and has a compressible insulating layer.
  • the embodiment of the present application adopts the structure of the bending part and the attachment part to realize the fixing of the second electrode.
  • the bending part is located beside the fixing position of the first electrode, the bending part is spaced from the first electrode, and When the outer casing of the force input area where the first electrode is located is deformed by external force, the bending portion will be deformed, and the second electrode will be deformed and displaced, so that the capacitance between the first electrode and the second electrode will be reduced. change due to external forces.
  • the second surface of the second electrode is opposite to the second surface of the first electrode and has a compressible insulating layer to form a variable capacitance, and the structure of the pressure detection module can be simplified and the pressure detection module can be reduced. thickness of.
  • the two bent portions are respectively fixed to the two sides of the fixed position of the first electrode 101, which can better realize the opposite arrangement of the first electrode and the second electrode, so that the first electrode and the second electrode The change of the compressible insulating layer between them can accurately reflect the capacitance change between the first electrode and the second electrode.
  • the support member 106 further includes: two fixing terminals 1063 , the two fixing terminals 1063 are respectively located at the second ends of the two bending parts 1061 , and the two fixing terminals 1063 are respectively fixed to the first electrode 101 fixed position on both sides.
  • the fixing terminal is used to realize the fixing of the bending portion and the inner surface of the casing, so that the embodiment of the present application can be easily and detachably installed inside the casing of the electronic device as a whole, and the cost is low, and the supporting member and the casing can be connected. The connection is stronger.
  • the bent portion 1061 is vertically connected with the attachment portion 1062 .
  • the supporting member 106 is integrally formed.
  • the supporting member 106 is a steel sheet.
  • the bent portion 1061 is a boss that protrudes from the inner surface of the housing 20 toward the direction of the second electrode 102 .
  • the protruding boss on the inner surface of the casing is used as the bending portion to support the attachment portion, so that the embodiment of the present application can be non-detachably installed inside the casing of the electronic device, and the pressure detection module can reuse a part of the casing , thereby simplifying the manufacture of the pressure detection module and reducing the cost of the pressure detection module.
  • the height of the support member 106 is greater than or equal to 0.7 mm and less than or equal to 1.1 mm.
  • the thickness of the pressure detection module should be as small as possible, the height of the support member 106 is 0.79 mm, and the height of the support member will also affect the second electrode and the first electrode installed on the support member.
  • the height of the compressible insulating layer of an electrode thereby optimizing the signal amount of the capacitance between the first electrode and the second electrode.
  • the height of the support means the distance from the top to the bottom of the support.
  • the thickness of the attachment portion 1062 is less than or equal to 0.2 mm.
  • the thickness of the pressure detection module should be as small as possible, and the thickness of the attachment portion 1062 is 0.15 mm.
  • the pressure detection module 10 further includes: a first circuit board 103 , the first surface of the first circuit board 103 is fixed on the inner surface of the force input area of the housing, the first circuit board 103 The second surface of the circuit board 103 is fixed to the first surface of the first electrode 101 .
  • the arrangement of the first circuit board 103 of the present application simplifies the circuit structure of the pressure detection module of the present application, facilitates manufacture and further saves the internal space of the electronic device.
  • the first circuit board 103 is a flexible printed circuit board, which can be more conducive to arranging the pressure detection module in a relatively small interior space. In a small electronic device, for example, it is convenient to install the pressure detection module in the rod portion of the earphone with a small internal space.
  • the pressure detection module 10 further includes: a first adhesive layer 105 .
  • the first surface of the first circuit board 103 is fixed to the inner surface of the force input area of the housing 20 by the first adhesive layer 105 .
  • the first circuit board is adhered to the inner surface of the force input area of the housing 20 through the first adhesive layer, which makes the installation easier.
  • the first adhesive layer 105 is a layered structure in which both upper and lower surfaces have adhesive force, so as to easily realize the adhesion between the first circuit board and the inner surface of the force input area of the housing.
  • the first adhesive layer is a double-sided tape.
  • the thickness of the double-sided adhesive tape is less than or equal to 0.15 mm.
  • the thickness of the double-sided adhesive tape is 0.1 mm.
  • the first surface of the first circuit board 103 further has at least one touch sensor 30 .
  • both the touch sensor and the first electrode are installed on the first circuit board in the embodiment of the present application
  • the first electrode for detecting pressure and the touch sensor for detecting touch can both be located on the same side of the casing and at the same position on the same side (that is, the casing where the force input area is located), so that the first circuit board can pass
  • the force input area of the housing simultaneously senses the user's touch and the pressure exerted by the user. Its structure is simple, the installation process can also be simplified, and the simple structure and simplified process can further improve product consistency and improve product yield. .
  • the embodiments of the present application can further save the internal space of the electronic device and facilitate the installation of other internal components.
  • the length of the first circuit board is less than or equal to 10 mm, so as to better enable at least one touch sensor on the first circuit board to realize touch sensing.
  • the change of the compressible insulating layer can reflect the external pressure and minimize the thickness of the compressible insulating layer between the first electrode and the second electrode, so as to occupy a smaller interior of the electronic device.
  • the height of the compressible insulating layer between the first electrode 101 and the second electrode 102 is greater than or equal to 0.1 and less than or equal to 0.4 mm. In this way, it can not only ensure the detected pressure signal reaches a certain amount of signal, so as to avoid the failure of the detected signal or the weak detected signal to affect the accuracy of the detected pressure, but also reduce the volume and thickness of the pressure detection module, simplify the manufacturing process and improve product consistency and yield.
  • the height of the compressible insulating layer between the first electrode 101 and the second electrode 102 is 0.2 mm.
  • the pressure detection module further includes: a second circuit board 104 , the first surface of the second circuit board 104 is fixed on the first surface of the second electrode 102 , and the second circuit board The second surface of 104 is fixed to the support.
  • the arrangement of the second circuit board 104 of the present application simplifies the circuit structure of the pressure detection module of the present application, facilitates manufacture and further saves the internal space of the electronic device.
  • the second circuit board 104 is a flexible printed circuit board, which can be more conducive to arranging the pressure detection module in a relatively small interior space. In a small electronic device, for example, it is convenient to install the pressure detection module in the rod portion of the earphone with a small internal space.
  • the pressure detection module 10 further includes: a second adhesive layer 107 .
  • the second surface of the second circuit board 104 is fixed to the support member 106 by the second adhesive layer 107 .
  • the second circuit board is adhered to the support portion through the second adhesive layer, which makes the installation easier.
  • the second adhesive layer 107 is a layered structure with adhesive force on both the upper and lower surfaces, so as to easily realize the adhesion between the second circuit board and the support portion.
  • the second adhesive layer is a double-sided tape.
  • the thickness of the double-sided adhesive tape is less than or equal to 0.15 mm.
  • the thickness of the double-sided adhesive tape is 0.1 mm.
  • the embodiment of the present application provides an electronic device, and the housing of the electronic device has the pressure detection module in any of the above embodiments.
  • the thickness of the casing is less than or equal to 1 mm. Therefore, the present embodiment can reduce the weight of the casing as much as possible while satisfying the strength of the casing.
  • the electronic devices include: wireless Bluetooth headsets, smart glasses, and the like.
  • the pressure detection module of the embodiment of the present application is installed in the pull rod of the wireless Bluetooth headset or smart glasses, and the pull rod is a rod-shaped part connected to the earpiece or the lens.
  • the electronic device is an earphone or smart glasses
  • the pressure detection module is detachably disposed inside the casing of the pull rod of the earphone or smart glasses.
  • the pressure detection module 10 is disposed in the pull rod 40 .
  • the pressure detection module is detachably arranged in the pull rod 40 .
  • the pressure detection module is detachably arranged in the middle of the pull rod 40 . It is convenient for the replacement and maintenance of the pressure detection module.
  • the pressure detection module 10 of the present application is non-detachably installed inside the casing of the pull rod 40 of the wireless Bluetooth headset.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

Un module de détection de pression (10) est disposé sur une surface interne d'un boîtier (20) d'un appareil électronique. Le module de détection de pression (10) comprend : une première électrode (101), une seconde électrode (102), et un élément de support (106). Une première surface de la première électrode (101) est fixée à une surface interne d'une région d'entrée de force du boîtier (20). L'élément de support (106) est fixé à la surface interne du boîtier (20), et une position de fixation de l'élément de support (106) est espacée d'une position de fixation de la première électrode (101). L'élément de support (106) supporte une première surface de la seconde électrode (102), de telle sorte qu'une seconde surface de la seconde électrode (102) est opposée à une seconde surface de la première électrode (101). Une couche isolante compressible est disposée entre la première électrode (101) et la seconde électrode (102), de telle sorte que la première électrode (101) et la seconde électrode (102) forment un condensateur. La région d'entrée de force du boîtier (20) entraîne, en fonction d'une pression externe reçue, la première électrode (101) à se déplacer dans une direction vers la seconde électrode (102), de telle sorte qu'une capacité entre la première électrode (101) et la seconde électrode (102) change, ce qui permet de déterminer un résultat de détection de pression de la pression externe. La détection de pression est réalisée simplement par l'installation du module de détection de pression (10) sur la surface interne de la région d'entrée de force du boîtier (20). L'invention ne nécessite pas de cadre de support, et l'épaisseur du module de détection de pression (10) est réduite, facilitant ainsi l'installation d'autres composants à l'intérieur de l'appareil électronique. L'invention concerne en outre un appareil électronique.
PCT/CN2020/133711 2020-12-03 2020-12-03 Module de détection de pression et appareil électronique WO2022116121A1 (fr)

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Application Number Priority Date Filing Date Title
PCT/CN2020/133711 WO2022116121A1 (fr) 2020-12-03 2020-12-03 Module de détection de pression et appareil électronique

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PCT/CN2020/133711 WO2022116121A1 (fr) 2020-12-03 2020-12-03 Module de détection de pression et appareil électronique

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105675178A (zh) * 2015-12-31 2016-06-15 联想(北京)有限公司 一种具有压力检测功能的电子设备以及压力检测方法
US20170228075A1 (en) * 2016-02-05 2017-08-10 Innolux Corporation Pressure sensing display and manufacturing method thereof
CN107037931A (zh) * 2015-07-14 2017-08-11 南昌欧菲光科技有限公司 触控显示屏及显示装置
CN206805504U (zh) * 2016-11-23 2017-12-26 深圳市汇顶科技股份有限公司 压力检测装置、触控屏和触控终端

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107037931A (zh) * 2015-07-14 2017-08-11 南昌欧菲光科技有限公司 触控显示屏及显示装置
CN105675178A (zh) * 2015-12-31 2016-06-15 联想(北京)有限公司 一种具有压力检测功能的电子设备以及压力检测方法
US20170228075A1 (en) * 2016-02-05 2017-08-10 Innolux Corporation Pressure sensing display and manufacturing method thereof
CN206805504U (zh) * 2016-11-23 2017-12-26 深圳市汇顶科技股份有限公司 压力检测装置、触控屏和触控终端

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