WO2014136505A1 - キー入力装置および電子機器 - Google Patents
キー入力装置および電子機器 Download PDFInfo
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- WO2014136505A1 WO2014136505A1 PCT/JP2014/052022 JP2014052022W WO2014136505A1 WO 2014136505 A1 WO2014136505 A1 WO 2014136505A1 JP 2014052022 W JP2014052022 W JP 2014052022W WO 2014136505 A1 WO2014136505 A1 WO 2014136505A1
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- WIPO (PCT)
- Prior art keywords
- key
- coil
- input device
- key input
- operation unit
- Prior art date
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Classifications
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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
- G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
- G06F3/0202—Constructional details or processes of manufacture of the input device
- G06F3/021—Arrangements integrating additional peripherals in a keyboard, e.g. card or barcode reader, optical scanner
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
- G06F1/1662—Details related to the integrated keyboard
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
- G06F1/1684—Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675
- G06F1/1698—Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675 the I/O peripheral being a sending/receiving arrangement to establish a cordless communication link, e.g. radio or infrared link, integrated cellular phone
-
- 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
- G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
- G06F3/0202—Constructional details or processes of manufacture of the input device
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10316—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers
- G06K7/10336—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers the antenna being of the near field type, inductive coil
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
- H04B5/79—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for data transfer in combination with power transfer
Definitions
- the present invention relates to a key input device including an antenna used in an RFID system, NFC (Near Field Communication System), and the like, and an electronic device including the key input device.
- a key input device including an antenna used in an RFID system, NFC (Near Field Communication System), and the like, and an electronic device including the key input device.
- Patent Document 1 discloses a configuration in which such a coil antenna is provided in a housing of an electronic device.
- Patent Document 2 discloses an external RFID communication device that is used by attaching an antenna device with a USB connector to a USB terminal of a notebook PC.
- Patent Document 3 discloses a tag that is attached to a metal casing of a notebook PC to perform communication.
- an NFC antenna module is disposed between a touch pad of a notebook PC and a bottom plate metal part provided at a lower portion of the touch pad.
- the NFC antenna module performs short-range wireless communication with the IC card by holding the IC card in the vicinity of the touch pad.
- the touch pad is of a capacitive type, for example, a large number of metal patterns such as capacitor patterns are incorporated, which hinders the formation of the magnetic field of the coil antenna for NFC, and it is difficult to obtain good antenna characteristics. was there. In recent years, metal housings tend to be frequently used with emphasis on strength and design. Therefore, it has become difficult to dispose the coil antenna at a position where it does not receive the electromagnetic shielding action.
- An object of the present invention is not to provide an antenna outside the housing and to make it less susceptible to the housing of the electronic device to which it is installed.
- the present invention is an apparatus in which a key input device can be used as, for example, an RFID antenna or an NFC antenna.
- the key input device of the present invention includes a plurality of key switches including a key operation unit and a switch unit that detects the displacement of the key operation unit (key top), and the RFIC directly or indirectly.
- the coil antenna to be connected is provided in at least one of the key operation units of the plurality of key switches.
- the winding axis of the coil antenna is preferably perpendicular to the operation surface of the key operation unit.
- the operation surface of a key operation part or a key input device can be utilized as a communication surface.
- an RFIC and a feeding coil connected to the RFIC and magnetically coupled to the coil antenna are disposed on a substrate on which a switch unit for detecting operation (displacement) of the key operation unit is provided. According to this configuration, a special substrate for mounting the RFIC is not necessary.
- the power supply coil is disposed on a substrate on which a switch unit that detects operation (displacement) of the key operation unit is provided. According to this configuration, a special substrate for mounting the feeding coil is not necessary.
- the key operation unit includes a plurality of character keys, and the key operation unit including the coil antenna is preferably a key operation unit having a size larger than that of the character keys. Thereby, the coil diameter of a coil antenna can be enlarged and a high gain is obtained.
- the first key operation unit and the second key operation unit are respectively provided with coil antennas, and the first key operation unit and the second key operation unit are connected in series or in parallel. It is preferable that Thereby, the substantial coil diameter of a coil antenna can be enlarged and a high gain is obtained.
- the coil antenna of the first key operation unit and the coil antenna of the second key operation unit are wound and connected so that the magnetic field generated in each coil antenna is in phase. It is preferable. Thereby, a relatively wide range of the operation surface of the key input device can be used as a communication surface.
- An electronic device includes a display unit and a key input unit (in a metal casing), and the key input unit includes the key input device according to any one of (1) to (7). .
- a communication circuit including a coil antenna and an RFIC can use a key input device as an RFID system or a reading device for NFC. That is, communication can be performed in a state where an RFID medium or a communication partner performing NFC communication is close to the key input device.
- the key input device is not covered with a metal casing, the problem of eddy currents due to the metal casing can be solved. Further, since it is not necessary to provide an antenna outside the housing, damage due to impact or the like and deterioration of workability do not occur.
- FIG. 1A is an external perspective view of a notebook PC 201 as an example of the electronic apparatus according to the first embodiment
- FIG. 1B is a partial perspective view of the key input device.
- FIG. 2A is a plan view of the key tops of the SPACE key and other keys on the left and right sides thereof.
- FIG. 2B is a cross-sectional view of these key switches.
- FIG. 3 is an exploded perspective view of a communication circuit including the coil antenna 10, the feeding coil 20, the RFIC 40, and the like.
- FIG. 4A is an equivalent circuit diagram of the communication circuit.
- FIG. 4B is an equivalent circuit diagram of another communication circuit in which the configuration of the matching circuit is different.
- FIG. 5A is an external perspective view of a notebook PC as an example of an electronic apparatus according to the second embodiment
- FIG. 5B is a partial perspective view of the key input device
- FIG. 6A is an external perspective view of a notebook PC as an example of an electronic apparatus according to the third embodiment
- FIG. 6B is a partial perspective view of the key input device.
- FIG. 7 is a cross-sectional view of two adjacent key switches.
- FIG. 8 is an equivalent circuit diagram of a communication circuit including the two coil antennas shown in FIG.
- FIG. 9 is a cross-sectional view of two adjacent key switches provided in the electronic apparatus according to the fourth embodiment.
- FIG. 10A is an equivalent circuit diagram of a communication circuit including the two coil antennas illustrated in FIG. FIG.
- FIG. 10B is another equivalent circuit diagram of the communication circuit including the two coil antennas illustrated in FIG.
- FIG. 11A is an external perspective view of a notebook PC as an example of an electronic apparatus according to the fifth embodiment
- FIG. 11B is a partial perspective view of the key input device.
- FIG. 12 is a cross-sectional view of a plane passing through two key switches.
- FIG. 13A is a perspective view showing a configuration of a coil antenna provided inside a key top of an electronic apparatus according to the sixth embodiment.
- FIG. 13B is a cross-sectional view of the VV portion of the coil antenna 10 in FIG.
- FIG. 14 is a cross-sectional view of one key switch portion of a key input device for an electronic apparatus according to the seventh embodiment.
- FIG. 1A is an external perspective view of a notebook PC 201 as an example of the electronic apparatus according to the first embodiment
- FIG. 1B is a partial perspective view of the key input device.
- the notebook PC 201 includes a key input device 101, a touch pad 120, a display device 110, and the like.
- the key input device 101 is arranged so that its operation surface is exposed to the opening of the casing 210 of the notebook PC 201.
- a coil antenna 10 is provided inside one key top 1 of the key input device.
- the key top 1 corresponds to a “key operation unit” according to the present invention. In this example, it is a key top of the SPACE key, which is larger than a normal character key.
- FIG. 2 (A) is a plan view of the key top of the SPACE key and other keys on the left and right sides.
- FIG. 2B is a cross-sectional view of these key switches.
- the SPACE key includes a key top 1, a mechanism unit that moves the key top 1 up and down, and a switch unit 2 that detects displacement of the key top 1.
- the other key switches include a key top, a mechanism part, and a switch part. These key switches are held on the substrate 50 or the like.
- the coil antenna 10 is attached to the inner surface of the key top 1.
- the feeding coil 20 and the RFIC 40 are mounted on the substrate 50 at a position hidden by the key top 1.
- FIG. 3 is an exploded perspective view of a communication circuit including the coil antenna 10, the feeding coil 20, the RFIC 40, and the like.
- the coil antenna 10 includes a base film 11 and coil conductors 12 and 13 formed on both surfaces thereof.
- a rectangular opening AP is formed in the base film 11, and coil conductors 12 and 13 are formed so as to go around the opening AP.
- Each of the coil conductors 12 and 13 is a conductor patterned in a rectangular spiral shape, and is patterned so as to be capacitively coupled in a state where a current flows in the same direction in plan view. That is, the two coil conductors are patterned so that when a clockwise current flows through one coil conductor in a plan view from the same direction, a current flows clockwise through the other coil conductor.
- the coil antenna 10 is attached to the inner surface of the key top 1 via an adhesive as shown in FIG. Since the opening AP is formed in the base film 11, the attachment mechanism of the key top 1 is not affected.
- the feeding coil 20 includes a ferrite core 21 and a coil conductor 22 wound around the ferrite core 21.
- the feeding coil 20 is disposed at a position where the magnetic flux passing through the coil axis of the coil conductor 22 is linked to the coil conductors 12 and 13 of the coil antenna 10.
- a chip capacitor 30 connected in parallel to the coil conductor 22 is disposed between the RFIC 40 and the feeding coil 20.
- FIG. 4A is an equivalent circuit diagram of the communication circuit.
- a coil antenna 10 shown in FIG. 4 (A) includes inductors La1 and La2 and capacitors Ca1 and Ca2.
- the inductors La1 and La2 correspond to the coil conductors 12 and 13 shown in FIG. 3, and the capacitors Ca1 and Ca2 correspond to the capacitance generated between the coil conductors 12 and 13.
- the inductor Lf corresponds to the feeding coil 20
- the capacitor Cf corresponds to the chip capacitor 30
- the feeding circuit FC corresponds to the RFIC 40.
- the capacitor Cf forms a resonance circuit together with the inductor Lf, and acts as an element for adjusting the resonance frequency and impedance matching.
- FIG. 4B is an equivalent circuit diagram of another communication circuit in which the configuration of the matching circuit is different.
- a low-pass filter including resistors R1 and R2, inductors Lp1 and Lp2, and capacitors Cp1 and Cp2 is provided between the inductor Lf and the power feeding circuit FC. Further, matching capacitors Cm1 and Cm2 are provided between the low-pass filter and the inductor Lf. It may be provided.
- a magnetic sheet such as a ferrite sheet may be attached to the back surface of the coil antenna 10.
- the coupling with the metal member existing below or in the vicinity of the lower part of the coil antenna 10 is suppressed, so that problems due to eddy currents can be avoided.
- the vicinity of the feeding coil 20 may not be covered with a magnetic sheet.
- the thickness of the magnetic material sheet may be reduced, or a magnetic material sheet having a relatively small permeability may be used.
- FIG. 5A is an external perspective view of a notebook PC as an example of an electronic apparatus according to the second embodiment
- FIG. 5B is a partial perspective view of the key input device.
- the coil antenna is provided on the key top of the SPACE key.
- the coil antenna 10 may be provided on the inner surface of the key top 1 of the Enter key or the Return key.
- the coil diameter of the coil antenna can be increased and a high gain can be obtained.
- FIG. 6A is an external perspective view of a notebook PC as an example of an electronic apparatus according to the third embodiment
- FIG. 6B is a partial perspective view of the key input device.
- the coil antenna is provided on one key top.
- the coil antenna is provided on the inner surface of the two key tops.
- coil antennas 10A and 10B are provided on the inner surfaces of the key tops 1A and 1B.
- FIG. 7 is a cross-sectional view of two adjacent key switches.
- Each of the coil antennas 10A and 10B includes a base film and a coil conductor having a predetermined number of turns formed on both surfaces thereof.
- spring pins 51A, 51B, 51C, 51D are provided on the upper surface of the substrate 50. Both ends of the coil conductor of the coil antenna 10A are connected to a conductor pattern on the substrate 50 via spring pins 51A and 51B. Similarly, both ends of the coil conductor of the coil antenna 10B are connected to a conductor pattern on the substrate 50 via spring pins 51C and 51D.
- FIG. 8 is an equivalent circuit diagram of a communication circuit including the two coil antennas shown in FIG.
- the coil antennas 10A and 10B constitute a series circuit, and a capacitor Ca and a power feeding circuit FC are connected to the series circuit.
- the two coil antennas 10A and 10B are wound and connected so that the magnetic fields generated in the coil antennas are in opposite phases.
- the magnetic flux ⁇ in FIG. 7 indicates that the magnetic fields generated in the two coil antennas 10A and 10B are in reverse phase.
- a closed loop is formed by the magnetic flux passing through the two coil antennas 10A and 10B, and strong magnetic field coupling is generated by bringing the communication partner device close to the closed loop (closed magnetic path).
- FIG. 9 is a cross-sectional view of two adjacent key switches provided in the electronic apparatus according to the fourth embodiment.
- Each of the coil antennas 10A and 10B includes a base film and a coil conductor having a predetermined number of turns formed on both surfaces thereof.
- spring pins 51A, 51B, 51C, 51D are provided on the upper surface of the substrate 50. Both ends of the coil conductor of the coil antenna 10A are connected to a conductor pattern on the substrate 50 via spring pins 51A and 51B. Similarly, both ends of the coil conductor of the coil antenna 10B are connected to a conductor pattern on the substrate 50 via spring pins 51C and 51D.
- FIG. 10A is an equivalent circuit diagram of a communication circuit including the two coil antennas shown in FIG.
- the coil antennas 10A and 10B constitute a series circuit, and a capacitor Ca and a power feeding circuit FC are connected to the series circuit.
- the two coil antennas 10A and 10B are wound and connected so that the magnetic field generated in each coil antenna is in phase.
- the magnetic flux ⁇ in FIG. 9 indicates that the magnetic fields generated in the two coil antennas 10A and 10B are in phase.
- the magnetic flux passing through the two coil antennas 10A and 10B enters and exits in the direction perpendicular to the operation surface of the key input device, and the magnetic field spreads over a wide range. Therefore, communication is possible in a wide range in the surface direction.
- FIG. 10B is another equivalent circuit diagram of the communication circuit including the two coil antennas shown in FIG.
- the RFIC 40 includes two input / output ports, each connected to one end of two coil antennas 10A and 10B, and the connection point of the two coil antennas 10A and 10B is grounded. With this configuration, it can be used as a communication circuit that uses two coil antennas individually.
- the two coil antennas may be connected not only in series but also in parallel.
- Three or more coil antennas may be connected in series or in parallel.
- FIG. 11A is an external perspective view of a notebook PC as an example of an electronic apparatus according to the fifth embodiment
- FIG. 11B is a partial perspective view of the key input device.
- coil antennas are provided on two adjacent key tops.
- coil antennas are provided on the inner surfaces of two separated key tops.
- coil antennas 10A and 10B are provided on the inner surfaces of the key tops 1A and 1B.
- FIG. 12 is a cross-sectional view of the plane passing through the two key switches.
- Each of the coil antennas 10A and 10B includes a base film and a coil conductor having a predetermined number of turns formed on both surfaces thereof. Both ends of the coil conductor of the coil antenna 10A are connected to a conductor pattern on the substrate 50 via spring pins 51A and 51B. Similarly, both ends of the coil conductor of the coil antenna 10B are connected to a conductor pattern on the substrate 50 via spring pins 51C and 51D.
- the two coil antennas 10A and 10B are wound and connected so that the magnetic fields generated in the coil antennas are in opposite phases.
- the magnetic flux ⁇ in FIG. 12 indicates that the magnetic fields generated in the two coil antennas 10A and 10B are in reverse phase.
- FIG. 13A is a perspective view showing a configuration of a coil antenna provided inside a key top of an electronic apparatus according to the sixth embodiment.
- FIG. 13B is a cross-sectional view of the VV portion of the coil antenna 10 in FIG.
- the coil antenna 10 includes a base film 14 and a ferrite sheet 16.
- a slit SL is formed in the base film 14, and a spiral coil conductor 15 is formed around the slit SL.
- the coil conductor 15 has a start end and a termination connected directly or via a capacitor.
- the inductance component and the capacitance component of the coil conductor 15 are determined so as to resonate in the operating frequency band.
- the ferrite sheet 16 is inserted into the slit SL of the base film 14. That is, half of the ferrite sheet 16 is on the upper surface of the base film 14 and the other half is on the lower surface of the base film 14. Since the ferrite sheet 16 acts as a magnetic core of the coil conductor formed on the base film 14 or as a magnetic path control sheet, the magnetic flux ⁇ is a coil axis formed by the coil conductor 15 as shown in FIG. Lean from. With this action, the pointing direction can be tilted from the direction perpendicular to the operation surface of the key input device.
- a power supply coil may be used and magnetically coupled to the power supply coil.
- the feeding coil may be arranged at a position that does not overlap the ferrite sheet 16 in plan view.
- magnetic coupling may be performed via the ferrite sheet 16.
- FIG. 14 is a cross-sectional view of one key switch portion of a key input device for an electronic apparatus according to the seventh embodiment.
- coil conductors 12 and 13 are integrally formed in the key top 1. These coil conductors 12 and 13 constitute a coil antenna.
- a ferrite sheet 16 is attached to the inner surface of the key top 1.
- the feeding coil 20 and the RFIC 40 are mounted on the substrate 50.
- the feeding coil 20 is magnetically coupled to the coil antenna by the coil conductors 12 and 13.
- Other configurations are the same as those of the first embodiment.
- the power feeding circuit When the power feeding circuit is directly connected to the coil antenna without using the power feeding coil 20, it may be electrically connected via a spring pin as in the structure shown in FIG.
- the coil conductor may have a loop shape of one turn as necessary.
- the coil conductor may be formed in a single layer.
- the configuration of the key input unit of the electronic device has been described by taking a notebook PC as an example.
- the present invention is similarly applied to a single key input device such as a USB-connected keyboard. it can.
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Abstract
Description
図1(A)は第1の実施形態に係る電子機器の一例としてのノートPC201の外観斜視図、図1(B)はそのキー入力装置の部分斜視図である。このノートPC201はキー入力装置101、タッチパッド120、表示装置110等を備えている。キー入力装置101は、その操作面がノートPC201の筐体210の開口部に露出するように配置されている。
図5(A)は第2の実施形態に係る電子機器の一例としてのノートPCの外観斜視図、図5(B)はそのキー入力装置の部分斜視図である。第1の実施形態ではSPACEキーのキートップにコイルアンテナを設けたが、第2の実施形態では、EnterキーまたはReturnキーのキートップ1の内面にコイルアンテナ10を設けてもよい。
図6(A)は第3の実施形態に係る電子機器の一例としてのノートPCの外観斜視図、図6(B)はそのキー入力装置の部分斜視図である。第1・第2の実施形態では1つのキートップにコイルアンテナを設けたが、第3の実施形態では、2つのキートップの内面にコイルアンテナを設ける。図6(B)に表れているように、キートップ1A,1Bの内面にコイルアンテナ10A,10Bが設けられている。
図9は、第4の実施形態に係る電子機器に設けられている、隣接する2つのキースイッチの断面図である。コイルアンテナ10A,10Bのそれぞれは、基材フィルムと、その両面に形成された所定ターン数のコイル導体とで構成されている。基板50の上面にはバネピン51A,51B,51C,51Dが設けられている。コイルアンテナ10Aのコイル導体の両端はバネピン51A,51Bを介して基板50上の導体パターンに接続されている。同様に、コイルアンテナ10Bのコイル導体の両端はバネピン51C,51Dを介して基板50上の導体パターンに接続されている。
図11(A)は第5の実施形態に係る電子機器の一例としてのノートPCの外観斜視図、図11(B)はそのキー入力装置の部分斜視図である。第3・第4の実施形態では隣接する2つのキートップにコイルアンテナを設けたが、第5の実施形態では、離れた2つのキートップの内面にコイルアンテナを設ける。図11(B)に表れているように、キートップ1A,1Bの内面にコイルアンテナ10A,10Bが設けられている。
図13(A)は第6の実施形態に係る電子機器のキートップの内部に設けられているコイルアンテナの構成を示す斜視図である。図13(B)は図13(A)におけるコイルアンテナ10のV-V部分の断面図である。コイルアンテナ10は基材フィルム14およびフェライトシート16を備えている。基材フィルム14にはスリットSLが形成されていて、このスリットSLの周囲にスパイラル状のコイル導体15が形成されている。コイル導体15は、始端と終端とが直接または容量を介して接続されている。コイル導体15のインダクタンス成分およびキャパシタンス成分は、使用周波数帯で共振するように定められている。
図14は第7の実施形態に係る電子機器のキー入力装置の1つのキースイッチ部分の断面図である。この例では、キートップ1内にコイル導体12,13が一体成型されている。これらのコイル導体12,13によってコイルアンテナが構成されている。キートップ1の内面にはフェライトシート16が貼付されている。基板50上には給電コイル20およびRFIC40が実装されている。給電コイル20はコイル導体12,13によるコイルアンテナと磁界結合する。その他の構成は第1の実施形態と同じである。
FC…給電回路
SL…スリット
1,1A,1B…キートップ
2…スイッチ部
10,10A,10B…コイルアンテナ
11…基材フィルム
12,13…コイル導体
14…基材フィルム
15…コイル導体
16…フェライトシート
20…給電コイル
21…フェライトコア
22…コイル導体
30…チップキャパシタ
40…RFIC
50…基板
51A,51B,51C,51D…バネピン
101…キー入力装置
110…表示装置
120…タッチパッド
210…筐体
Claims (8)
- キー操作部と、このキー操作部の変位を検出するスイッチ部とで構成されるキースイッチを複数備えたキー入力装置において、
RFICが直接に、または間接に、接続されるコイルアンテナを、前記複数のキースイッチのキー操作部のうち少なくとも一つに備えたことを特徴とする、キー入力装置。 - 前記コイルアンテナの巻回軸は前記キー操作部の操作面に対して垂直方向である、請求項1に記載のキー入力装置。
- 前記キー操作部の操作が検出されるスイッチ部が設けられる基板に前記RFICが配置された、請求項1または2に記載のキー入力装置。
- 前記RFICに接続され、前記コイルアンテナと磁界結合する給電コイルを備え、
前記キー操作部の操作が検出されるスイッチ部が設けられる基板に、前記給電コイルが配置された、請求項1~3のいずれかに記載のキー入力装置。 - 前記キー操作部は複数の文字キーを含み、前記コイルアンテナを備えるキー操作部は、前記文字キーよりサイズの大きなキー操作部である、請求項1~4のいずれかに記載のキー入力装置。
- 前記複数のキー操作部のうち第1のキー操作部および第2のキー操作部にそれぞれ前記コイルアンテナが備えられ、前記第1のキー操作部および前記第2のキー操作部は直列接続または並列接続されている、請求項1~5のいずれかに記載のキー入力装置。
- 前記第1のキー操作部のコイルアンテナと前記第2のキー操作部のコイルアンテナとは、各コイルアンテナに生じる磁界が同相となるように巻回され接続されている、請求項6に記載のキー入力装置。
- 表示部およびキー入力部を備えた電子機器において、前記キー入力部は請求項1~7のいずれかに記載のキー入力装置である、電子機器。
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CN201490000106.5U CN204242109U (zh) | 2013-03-08 | 2014-01-30 | 键输入装置以及电子设备 |
US14/449,175 US9983689B2 (en) | 2013-03-08 | 2014-08-01 | Key input unit and electronic apparatus |
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CN107368195A (zh) * | 2016-05-11 | 2017-11-21 | 宏碁股份有限公司 | 适用在电子装置的输入设备 |
JP2018060090A (ja) | 2016-10-06 | 2018-04-12 | ブラザー工業株式会社 | 画像形成装置 |
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US20140340315A1 (en) | 2014-11-20 |
JP5590274B1 (ja) | 2014-09-17 |
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