WO2019092815A1 - Structure de détection de changement de capacité et machine électronique équipée de celle-ci - Google Patents

Structure de détection de changement de capacité et machine électronique équipée de celle-ci Download PDF

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Publication number
WO2019092815A1
WO2019092815A1 PCT/JP2017/040292 JP2017040292W WO2019092815A1 WO 2019092815 A1 WO2019092815 A1 WO 2019092815A1 JP 2017040292 W JP2017040292 W JP 2017040292W WO 2019092815 A1 WO2019092815 A1 WO 2019092815A1
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WO
WIPO (PCT)
Prior art keywords
display
electrode plate
cover glass
attached
change detection
Prior art date
Application number
PCT/JP2017/040292
Other languages
English (en)
Japanese (ja)
Inventor
富強 韓
Original Assignee
三菱電機株式会社
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 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to DE112017008068.1T priority Critical patent/DE112017008068B4/de
Priority to JP2019551811A priority patent/JP6632788B2/ja
Priority to PCT/JP2017/040292 priority patent/WO2019092815A1/fr
Publication of WO2019092815A1 publication Critical patent/WO2019092815A1/fr

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/965—Switches controlled by moving an element forming part of the switch
    • H03K17/975—Switches controlled by moving an element forming part of the switch using a capacitive movable element
    • 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
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03547—Touch pads, in which fingers can move on a surface

Definitions

  • the present invention relates to a capacitance change detection structure and an electronic device provided with the same.
  • the input device disclosed in Patent Document 1 includes a structure (referred to as a conventional capacitance change detection structure) that detects a capacitance change between the first electrode and the second electrode.
  • a structure referred to as a conventional capacitance change detection structure
  • FIG. 5 is a reference diagram for explaining the case where the conventional capacitance change detection structure is applied to an electronic device provided with a display.
  • the electrostatic capacitance change detection structure illustrated in FIG. 5 includes a first electrode plate 100, a second electrode plate 200, a cover glass 300, a frame 400, a display 500, a bonding material 600, a touch panel 700, and the like.
  • the touch panel 700 and the cover glass 300 are attached to the display surface side of the display 500. As shown in FIG. 5, a direction parallel to the surface of the cover glass 300 is X.
  • the frame 400 is a component attached to the back side of the display 500.
  • a bonding material 600 is disposed between the display surface side of the display 500 and the cover glass 300. The bonding material 600 is a component that elastically deforms.
  • the first electrode plate 100 is a plate-like component attached to a mounting surface 501 protruding in the outer circumferential direction from the side portion of the display 500. As shown in FIG. 5, the direction of the mounting surface of the first electrode plate 100 is parallel to the direction X. As shown in FIG. 5, the second electrode plate 200 is a plate-like component attached to the back surface of the cover glass 300. As shown in FIG. 5, the direction of the mounting surface of the second electrode plate 200 is parallel to the direction X. The first electrode plate 100 and the second electrode plate 200 face each other. A capacitance C is generated between the first electrode plate 100 and the second electrode plate 200, and the capacitance C is detected by a detection unit (not shown).
  • the capacitance C changes according to the distance between the first electrode plate 100 and the second electrode plate 200.
  • the bonding material 600 deforms and the cover glass 300 approaches the display 500. At this time, the capacitance C changes.
  • the direction of the mounting surface of the first electrode plate 100 and the second electrode plate 200 is the direction X It becomes parallel. Therefore, a space for the dimension S1 (frame area) shown in FIG. 5 has to be secured, and the external size of the electronic device is increased. In addition, there is a problem that the narrowing of the cover glass attached to the display can not be realized.
  • the present invention has been made to solve the problems as described above, and provides a capacitance change detection structure capable of achieving downsizing of the outer shape of an electronic device and narrowing of a cover glass attached to a display.
  • the purpose is
  • a capacitance change detection structure includes a display for displaying information, a frame for containing the display, a cover glass attached to the display surface side of the display, a first electrode plate attached to the frame, and the display
  • the cover glass is manipulated, the display moves to the back side, and the capacitance generated between the first and second plates changes.
  • the directions of the mounting surfaces of the first electrode plate and the second electrode plate were not parallel to the direction parallel to the surface of the cover glass.
  • FIG. 2 is a view showing an example of the configuration of a capacitance change detection structure according to the first embodiment. It is a figure for demonstrating an effective area. It is a figure which shows another example of an electrostatic capacitance change detection structure. 4A and 4B show another example of the capacitance change detection structure. It is a reference diagram for explaining the case where the conventional electrostatic capacitance change detection structure is applied to the electronic device provided with a display.
  • FIG. 1 is a diagram for explaining a configuration example of a capacitance change detection structure according to the first embodiment.
  • the capacitance change detection structure according to the first embodiment is a structure that detects a change in capacitance C generated between the first electrode plate 10 and the second electrode plate 20.
  • the electronic device 1 includes a first electrode plate 10, a second electrode plate 20, a cover glass 30, a frame 40, a display 50, an elastic body 60, a touch panel 70 and the like.
  • the electronic device 1 is mounted on, for example, an instrument panel of a vehicle.
  • the electronic device 1 has a capacitance change detection structure, and calculates the operation load applied to the cover glass 30 based on the detected change in the capacitance C.
  • the display 50 is, for example, an LCD (Liquid Crystal Display).
  • the display 50 displays information output from an information control unit (not shown).
  • the display 50 includes a display body 55 and a backlight chassis 54.
  • FIG. 1 shows an example in which the display surface 51 is constituted by the display body 55 of the display 50, and the side surface 52 and the back surface 53 are constituted by the backlight chassis 54 of the display 50.
  • the touch panel 70 and the cover glass 30 are attached to the display surface 51 side of the display 50.
  • the touch panel 70 is a plate-like component.
  • the touch panel 70 is a component capable of detecting contact of an object such as a finger on the cover glass 30. When the touch panel 70 detects the touch of the object, the touch panel 70 outputs a signal to an information control unit (not shown).
  • the cover glass 30 is a plate-like component. An object such as a finger contacts the cover glass 30. As shown in FIG. 1, a direction parallel to the surface of the cover glass 30 is X.
  • the display 50 is housed in the frame 40.
  • the frame 40 is made of, for example, a sheet metal.
  • the frame 40 is shaped to cover the back surface 53 and the side surface 52 of the display 50. As shown in FIG. 1, the frame 40 has a bottom 41 and a side 42.
  • At least one elastic body 60 is disposed between the bottom 41 of the frame 40 and the back surface 53 of the display 50.
  • the elastic body 60 is fixed to the frame 40 and the display 50 by, for example, screwing, bonding or the like.
  • the elastic body 60 is a component that elastically deforms.
  • the elastic body 60 is made of, for example, a leaf spring, rubber or the like.
  • the elastic bodies 60 are disposed, for example, at the four corners of the bottom 41 of the square.
  • the elastic body 60 presses the display 50 in a direction perpendicular to the direction X parallel to the surface of the cover glass 30.
  • the movement of the display 50 pressed by the elastic body 60 in the direction perpendicular to the direction X is restricted by the end of the cover glass 30 contacting the stopper (not shown).
  • the display 50 resists the biasing force of the elastic body 60 and moves to the back surface 53 side.
  • the elastic body 60 generates a reaction force against the operation of applying a load to the cover glass 30.
  • the first electrode plate 10 is a plate-like component attached to the side portion 42 of the frame 40. As shown in FIG. 1, the direction of the surface (mounting surface) to which the first electrode plate 10 is attached is taken as Y1.
  • the second electrode plate 20 is a plate-like component attached to the side surface 52 of the display 50. As shown in FIG. 1, the direction of the surface (mounting surface) to which the second electrode plate 20 is attached is Y2. An electrostatic capacitance C is generated between the first electrode plate 10 and the second electrode plate 20. The capacitance C is detected by a detection unit (not shown). The capacitance C is the distance D between the first electrode plate 10 and the second electrode plate 20, and the area of the opposing region of the first electrode plate 10 and the second electrode plate 20 (hereinafter referred to as “effective” It changes according to the area S). A detection unit (not shown) calculates the capacitance C by the following equation (1). An arbitrary value is used as the dielectric constant ⁇ .
  • FIG. 2 is a diagram for explaining the effective area S. As shown in FIG. FIG. 2 is a view of the first electrode plate 10 and the second electrode plate 20 from the P direction shown in FIG. 1 (the side portion 42 of the frame 40 is not shown). The hatched area shown in FIG.
  • a detection unit (not shown) outputs the calculated capacitance C to a calculation unit (not shown).
  • the calculation unit calculates how much load (operation load) is applied to the cover glass 30 based on the amount of change of the capacitance C.
  • the calculation unit outputs the calculated operation load to an information control unit (not shown).
  • the said information control part changes the information displayed on the display 50 according to the magnitude
  • the direction Y1 of the mounting surface of the first electrode plate 10 and the direction Y2 of the mounting surface of the second electrode plate 20 are perpendicular to the direction X parallel to the surface of the cover glass 30.
  • FIG. 3 is configured such that the direction Y1 of the mounting surface of the first electrode plate 10 is not parallel to the direction X. In this configuration, when the user applies a load to the cover glass 30, the display 50 moves, and both the distance D and the effective area S in Equation (1) change.
  • the capacitance change detection structure includes the display 50 for displaying information, the frame 40 for housing the display 50, and the cover glass 30 attached to the display surface 51 of the display 50.
  • the dimension with respect to the direction X of the surface of the cover glass 30 can be comprised by dimension S2 shown in FIG. 1, the external shape of the cover glass 30 can be made small and the miniaturization of the electronic device 1 can be realized. it can. In addition, narrowing of the cover glass 30 attached to the display 50 can be realized.
  • the first electrode plate 10 and the second electrode plate 20 are attached at positions away from the cover glass 30.
  • the first plate 10 is attached to the side 42 of the frame 40 and the second plate 20 is attached to the side 52 of the display 50.
  • the first electrode plate 10 and the second electrode plate 20 are attached at a position separated from the cover glass 30 by a predetermined distance or more. Therefore, external static electricity can be prevented from flowing into the first electrode plate 10 and the second electrode plate 20, and erroneous detection of the operation load caused by the external static electricity can be prevented.
  • the area of the first electrode plate 100 and the second electrode plate 200 can not be increased. Further, since the bonding material 600 is bent, the amount of change in the distance between the first electrode plate 100 and the second electrode plate 200 is small, and it is difficult to realize a desired dynamic range.
  • the electrostatic capacitance change detection structure according to the first embodiment since there is no restriction of the space in the direction X, the area of the first electrode plate 10 and the second electrode plate 20 is increased to obtain an effective area. The variation amount of S can be increased. Thereby, a desired dynamic range can be realized. In addition, highly accurate detection of the operation load can be realized.
  • the elastic body 60 fine adjustment of the variation amount of the distance D and the effective area S becomes possible, and a desired dynamic range can be realized. In addition, highly accurate detection of the operation load can be realized. Also, the operation feeling can be adjusted.
  • FIG. 4A the rib 56 is erected at a position on the back surface 53 side of the display 50 and on the back surface 53 side of the active area of the touch panel 70 attached to the display 50, and the second electrode plate 20 is attached to the rib 56.
  • the active area is an area in which the touch of an object such as a finger on the touch panel 70 can be detected.
  • the frame 40 is provided with the rib 43, and the first electrode plate 10 is attached to the rib 43.
  • the first electrode plate 10 and the second electrode plate 20 face each other.
  • the rib 43 does not necessarily need to provide.
  • the side portion 42 of the frame 40 may be configured in a stepped manner, and the first electrode plate 10 may be attached to the stepped side portion 42.
  • any component of the embodiment can be modified or any component can be omitted in the embodiment.
  • the capacitance change detection structure according to the present invention is suitable for mounting on a vehicle because the external shape of the electronic device can be miniaturized and the cover glass attached to the display can be narrowed.
  • Reference Signs List 1 electronic device 10 first electrode plate, 20 second electrode plate, 30 cover glass, 40 frame, 41 bottom, 42 side, 43 rib, 50 display, 51 display surface, 52 side, 53 back, 54 back Light chassis, 55 display body, 56 ribs, 60 elastic, 70 touch panel.

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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)
  • Push-Button Switches (AREA)
  • Position Input By Displaying (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

L'invention comprend un affichage (50) pour afficher des informations, un cadre (40) recevant l'affichage (50), un verre de couverture (30) monté du côté surface d'affichage (51) de l'affichage (50), une première plaque polaire (10) montée sur le cadre (40), et une seconde plaque polaire (20) montée sur l'affichage (50), le fonctionnement du verre de couverture (30) conduisant au déplacement de l'affichage (50) vers le côté surface arrière (53) et un changement de la capacité générée entre la première plaque polaire (10) et la seconde plaque polaire (20), et les directions des surfaces de montage pour la première plaque polaire (10) et la seconde plaque polaire (20) ne sont pas parallèles à une direction qui est parallèle à la surface du verre de couverture (30).
PCT/JP2017/040292 2017-11-08 2017-11-08 Structure de détection de changement de capacité et machine électronique équipée de celle-ci WO2019092815A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE112017008068.1T DE112017008068B4 (de) 2017-11-08 2017-11-08 Kapazitätsänderungsstruktur und damit ausgestattete elektronische Maschine
JP2019551811A JP6632788B2 (ja) 2017-11-08 2017-11-08 静電容量変化検出構造およびそれを備えた電子機器
PCT/JP2017/040292 WO2019092815A1 (fr) 2017-11-08 2017-11-08 Structure de détection de changement de capacité et machine électronique équipée de celle-ci

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/040292 WO2019092815A1 (fr) 2017-11-08 2017-11-08 Structure de détection de changement de capacité et machine électronique équipée de celle-ci

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WO2019092815A1 true WO2019092815A1 (fr) 2019-05-16

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JP (1) JP6632788B2 (fr)
DE (1) DE112017008068B4 (fr)
WO (1) WO2019092815A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57185148U (fr) * 1981-05-20 1982-11-24
JPS58135823U (ja) * 1982-03-08 1983-09-12 オムロン株式会社 静電容量形スイツチ
JPS6224450U (fr) * 1985-07-23 1987-02-14
JP2006253000A (ja) * 2005-03-11 2006-09-21 Alps Electric Co Ltd 入力装置
US20080142353A1 (en) * 2005-08-03 2008-06-19 Martin Jeitner Operating element for a motor vehicle
JP2017045513A (ja) * 2015-08-24 2017-03-02 富士通株式会社 筐体に装着可能なキャップを有する電子機器

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101719208B1 (ko) 2015-06-17 2017-03-23 주식회사 하이딥 디스플레이 모듈을 포함하는 압력 검출 가능한 터치 입력 장치

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57185148U (fr) * 1981-05-20 1982-11-24
JPS58135823U (ja) * 1982-03-08 1983-09-12 オムロン株式会社 静電容量形スイツチ
JPS6224450U (fr) * 1985-07-23 1987-02-14
JP2006253000A (ja) * 2005-03-11 2006-09-21 Alps Electric Co Ltd 入力装置
US20080142353A1 (en) * 2005-08-03 2008-06-19 Martin Jeitner Operating element for a motor vehicle
JP2017045513A (ja) * 2015-08-24 2017-03-02 富士通株式会社 筐体に装着可能なキャップを有する電子機器

Also Published As

Publication number Publication date
DE112017008068B4 (de) 2021-08-26
DE112017008068T5 (de) 2020-06-18
JP6632788B2 (ja) 2020-01-22
JPWO2019092815A1 (ja) 2019-12-26

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