CN116382494A - Active stylus - Google Patents

Active stylus Download PDF

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Publication number
CN116382494A
CN116382494A CN202211698642.4A CN202211698642A CN116382494A CN 116382494 A CN116382494 A CN 116382494A CN 202211698642 A CN202211698642 A CN 202211698642A CN 116382494 A CN116382494 A CN 116382494A
Authority
CN
China
Prior art keywords
circuit board
active stylus
pressure sensor
module
pads
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN202211698642.4A
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Chinese (zh)
Inventor
连建枷
赖锭正
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Emright Corp
Original Assignee
Emright Corp
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Filing date
Publication date
Application filed by Emright Corp filed Critical Emright Corp
Publication of CN116382494A publication Critical patent/CN116382494A/en
Pending legal-status Critical Current

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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
    • G06F3/033—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
    • G06F3/03545—Pens or stylus
    • 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
    • G06F3/0442—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using active external devices, e.g. active pens, for transmitting changes in electrical potential to be received by the digitiser
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

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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)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Multi-Conductor Connections (AREA)
  • Measuring Fluid Pressure (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Steroid Compounds (AREA)

Abstract

The invention provides an active stylus, which comprises a shell, a circuit board module, a pressure sensor and a refill module. The circuit board module is arranged in the shell. The pressure sensor has a pressure sensing surface and a welding surface opposite to each other. The pressure sensor is arranged through the welding surface and is electrically connected with the circuit board module, wherein at least one electrical conduction path exists between the pressure sensing surface and the welding surface. The refill module is partially arranged in the shell and is abutted against the pressure sensing surface. The circuit board module generates a signal that is transmitted to the cartridge module by the pressure sensor. The active stylus uses the pressure sensor as a signal transmission medium, so that the sensing efficiency can be effectively improved.

Description

Active stylus
Technical Field
The present invention relates to a stylus, and more particularly to an active stylus.
Background
With the development and advancement of technology, various electronic devices in the market use a touch panel (touch pad) or a touch pad (touch pad) as an operation interface, and a user usually uses a finger to operate on the touch panel, but when the finger slides on the touch panel, the friction force is easily too large due to a wider contact area of the finger, which is not suitable for a large amount or quick input, and meanwhile, a situation of false touch may occur, so a stylus is introduced.
The existing touch pens can be divided into an active type and a passive type, wherein the active type touch pen transmits signals by a signal transmitting circuit in the pen, so that the corresponding touch panel (or touch panel) can judge the coordinates and the touch pressure of the contacted position after receiving the signals. That is, when the pen core is driven (written), the active stylus transmits the pressure applied by the pen core to the pressure sensor to generate a sensing signal of the touch pressure.
However, with the improvement of the pressure sensor technology, the information required to be transmitted is multiplied, and the electrical transmission path in the prior art needs to occupy a certain space inside the active stylus, and is also easy to be damaged in the operation process due to component assembly or welding. Accordingly, how to improve the message transmission path to increase the sensing efficiency of the active stylus is a problem that one skilled in the art needs to think and solve.
Disclosure of Invention
The invention aims at an active stylus, which takes a pressure sensor as a signal transmission medium, so that the sensing efficiency can be effectively improved.
According to an embodiment of the invention, an active stylus includes a housing, a circuit board module, a pressure sensor, and a cartridge module. The circuit board module is arranged in the shell. The pressure sensor has a pressure sensing surface and a welding surface opposite to each other. The pressure sensor is arranged through the welding surface and is electrically connected with the circuit board module, wherein at least one electrical conduction path exists between the pressure sensing surface and the welding surface. The refill module is partially arranged in the shell and is abutted against the pressure sensing surface. The circuit board module generates a signal that is transmitted to the cartridge module by the pressure sensor.
In the active stylus according to the embodiments of the present invention, the circuit board module, the pressure sensor, and the cartridge module are sequentially arranged along a central axis of the active stylus.
In an active stylus according to an embodiment of the invention, the pressure sensor further includes a plurality of conductive portions disposed on the soldering surface, wherein one of the conductive portions is electrically connected to the pressure sensing surface along the electrical conduction path.
In an active stylus according to embodiments of the present invention, an electrically conductive path runs through a case of the pressure sensor described above.
In an active stylus according to embodiments of the invention, the signal is a TX signal.
In an active stylus according to an embodiment of the invention, a cartridge module includes a cartridge, a holder, and an abutment, all having conductivity. The abutting piece and the pen core are respectively assembled at two opposite ends of the fixing piece, the part of the pen core protrudes out of the shell, and the abutting piece abuts against the pressure sensing surface.
In the active stylus according to the embodiments of the present invention, the pen core, the holder and the abutment are located on the central axis of the active stylus.
In the active stylus according to the embodiment of the invention, the circuit board module comprises a first circuit board and a second circuit board, the pressure sensor is arranged and electrically connected to the second circuit board, and the second circuit board is arranged on the side surface of the first circuit board and electrically connected to the first circuit board.
In the active stylus according to the embodiment of the invention, the second circuit board is perpendicular to the first circuit board.
In the active stylus according to the embodiment of the invention, the first circuit board has a plurality of first pads and an upper surface and a lower surface opposite to each other, and the side surface is adjacent between the upper surface and the lower surface. The side surface is adjacent between the upper surface and the lower surface. The first pads are disposed on the upper surface and the lower surface respectively. The second circuit board is provided with a plurality of second connection pads opposite to the pressure sensor. The second circuit board is abutted against the side surface, and the first circuit board and the second circuit board are respectively welded with the second connecting pad by the first connecting pad so as to be electrically connected with each other.
Based on the above, the active stylus connects the pressure sensor with the circuit board module by its welding surface, and the pen core module is abutted on the pressure sensing surface of the pressure sensor, more importantly, there is at least one electrical conduction circuit between the pressure sensing surface and the welding surface of the pressure sensor. Thus, the signal generated by the circuit board module can be transmitted to the pen core module from the welding surface, at least one electric conduction circuit and the pressure sensing surface in sequence. The pressure sensor is used as a medium for transmitting signals by the active stylus, so that an additional signal transmission component is omitted, the internal space of the active stylus can be effectively saved, the signal transmission path is shortened, and the aim of improving the sensing efficiency is fulfilled.
Drawings
FIGS. 1 and 2 are exploded views of parts of an active stylus according to an embodiment of the invention;
FIG. 3 is a partial cross-sectional view of an active stylus;
FIG. 4 is a cross-sectional view of a pressure sensor of an active stylus;
fig. 5 and fig. 6 are schematic partial views of a circuit board module of an active stylus at different viewing angles.
Detailed Description
Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and the description to refer to the same or like parts.
Fig. 1 and 2 are exploded views of parts of an active stylus according to an embodiment of the invention. Rectangular coordinates X-Y-Z are provided herein to facilitate component description. Referring to fig. 1 and fig. 2, in the present embodiment, the active stylus 100 includes a housing 110, a circuit board module 120, a pressure sensor 130, and a cartridge module 140. The circuit board module 120, the pressure sensor 130, and the cartridge module 140 are partially disposed in the housing 110. The pressure sensor 130 has a pressure sensing surface S1 and a soldering surface S2 opposite to each other, wherein the pressure sensor 130 is disposed through the soldering surface S2 and electrically connected to the circuit board module 120, and the cartridge module 140 abuts against the pressure sensing surface S1 of the pressure sensor 130. As shown, the circuit board module 120, the pressure sensor 130 and the pen core module 140 are sequentially disposed along the central axis L1 of the active stylus 100. Here, the central axis L1 is located on or parallel to the Y axis.
In the present embodiment, the housing 110 includes a pen body 111, a pen head 112, and inner housings 113 and 114, wherein the circuit board module 120 is received between the inner housings 113 and 114, and then is received in the pen body 111 and the pen head 112 together with the inner housings 113 and 114. The pen core module 140 includes a pen core 143, a holder 142 and an abutting member 141, which are electrically conductive and are located on the central axis L1 of the active stylus 100. The abutting piece 141 and the pen core 143 are respectively assembled at two opposite ends of the holder 142, and a part of the pen core 143 protrudes out of the pen head 112 of the housing 110, and the abutting piece 141 is made of conductive rubber or conductive plastic, for example, and is used for abutting the pressure sensing surface S1 of the pressure sensor 130. As shown in fig. 1 and 2, the abutment member 141 and the holding member 142 are disposed in a groove of the inner housing 114.
Furthermore, the active stylus 100 further includes a spring 150, which is sleeved outside the holder 142 and substantially abuts between the inner housing 114 and the holder 142, wherein the elastic force of the spring 150 constantly drives the cartridge module 140 to seamlessly abut on the pressure sensing surface S1 of the pressure sensor 130, that is, the spring 150 drives the abutment member 141 of the cartridge module 140 to provide a predetermined pressure to the pressure sensor 130, and has compact configuration of components.
Fig. 3 is a partial cross-sectional view of an active stylus. Fig. 4 is a cross-sectional view of a pressure sensor of an active stylus. Referring to fig. 2 to fig. 4, in the present embodiment, at least one electrical conduction path L2 exists between the pressure sensing surface S1 and the bonding surface S2. The abutting piece 141 of the cartridge module 140 abuts the pressure sensing surface S1. The signal generated by the circuit board module 120 is transmitted to the cartridge module 140 through the pressure sensor 130.
Specifically, the pressure sensor 130 further includes a plurality of conductive portions 131 disposed on the bonding surface S2 and a conductive layer 132 disposed on the pressure sensing surface S1, and the electrical conduction path L2 is electrically connected between the conductive portions 131 and the conductive layer 132, only one of which is illustrated here as an example. That is, for the pressure sensor 130, the conductive portion 131, the electrical conduction path L2 and the conductive layer 132 are electrically conducted with each other, so as to electrically connect the pressure sensing surface S1 and the bonding surface S2.
The form, direction or trend of the electrical conduction path L2 is not limited herein, and in the present embodiment, the electrical conduction path L2 passes through the case 133 of the pressure sensor 130. In another embodiment, the electrical conduction path L2 is a conductive wire structure inside the pressure sensor 130. In another embodiment, not shown, the electrical conduction path L2 is located entirely in the case 133 of the pressure sensor 130. In any of the above, the present invention can be applied to at least a part (at least one conductive portion 131) of the pressure sensing surface S1 and the bonding surface S2 of the pressure sensor 130 to generate an electrical conduction effect.
In addition, fig. 5 and fig. 6 are schematic partial views of the circuit board module of the active stylus at different viewing angles. Referring to fig. 5 and 6 together with fig. 2, in the present embodiment, the circuit board module 120 includes a first circuit board 121 and a second circuit board 122, the pressure sensor 130 is disposed and electrically connected to the second circuit board 122, and the second circuit board 122 is disposed at a side S5 of the first circuit board 121 and electrically connected to the first circuit board 121. The operation processing unit of the active stylus 100 and related main electronic components are disposed on the first circuit board 121, and the second circuit board 122 is used for carrying the pressure sensor 130 and transmitting information between the first circuit board 121 and the pressure sensor 130.
In detail, the first circuit board 121 has a plurality of first pads 121a, 121b, and an upper surface S3 and a lower surface S4 opposite to each other, and the side surface S5 is adjacent between the upper surface S3 and the lower surface S4. The first pads 121a are disposed on the upper surface S3, and the first pads 121b are disposed on the lower surface S4. The second circuit board 122 has a front surface S7 and a rear surface S6 opposite to each other, and a plurality of second pads 122a, 122b disposed on the rear surface S6, wherein the pressure sensor 130 is disposed on the front surface S7 and is electrically connected to the front surface S7 through the conductive portion 131. The second pads 122a, 122b face away from the pressure sensor 130. The second circuit board 122 is abutted against the side surface S5 by the rear surface S6, so that the second circuit board 122 is substantially perpendicular to the first circuit board 121, and the first circuit board 121 and the second circuit board 122 are electrically connected to each other only by soldering the second pads 122a and 122b with the first pads 121a and 121b, respectively.
Further, in order to make the first circuit board 121 and the second circuit board 122 perpendicular to each other electrically and smoothly connect, the second pads 122a, 122b of the present embodiment respectively correspond to the first pad 121a of the upper surface S3 and the first pad 121b of the lower surface S4, and a space D1 is kept between the first pad 121a and the second pad 122a corresponding to each other (the first pad 121b and the second pad 122b are the same, and omitted here), and the first pads 121a, 121b and the second pads 122a, 122b are connected in one-to-one correspondence to each other by the solder 160 (for example, one of the first pad 121a and one of the second pads 122 a).
Based on the above configuration, the first circuit board 121 and the second circuit board 122 of the circuit board module 120, the welding surface S2, the electrical conduction path L2 and the pressure sensing surface S1 of the pressure sensor 130, and the abutting piece 141, the holding piece 142 and the pen core 143 of the pen core module 140 can form a conduction circuit, so that the TX signal generated by the first circuit board 121 can be smoothly transmitted to the pen core 143 through the conduction circuit.
For example, when the user is operating the active stylus 100, the pen core 143 of the pen core module 140 is subjected to different degrees of pressure according to different writing gestures and writings, and is directly reacted (transmitted) to the pressure sensor 130 through the holder 142 and the abutment 141. The operation processing unit on the first circuit board 121 receives the electrical signal transmitted by the pressure sensor 130, and calculates the pressure of the pen tip according to the electrical signal, and converts the pressure into a corresponding pressure order. Then, the different pressure orders are converted into different frequencies or digital signals, and the frequencies or signals are converted into voltages (signals) required by the pen core module 140 through a voltage transformation unit (not shown) on the first circuit board 121, and the voltages (signals) are sequentially transmitted to the pen core 143 through the conducting circuit, so that the voltages are conveniently transmitted to the touch panel (or the touch panel) to form corresponding handwriting. In other words, the conducting circuit for transmitting the TX signal in the present embodiment is substantially the same as the force transmission axis of the cartridge module 140 to the pressure sensor 130 and has an opposite direction, and obviously no other dedicated electrical signal transmission member is required, wherein the force sensing direction is substantially in the negative Y-axis direction, and the TX signal is in the positive Y-axis direction.
In summary, in the above embodiment of the present invention, the circuit board module includes a first circuit board and a second circuit board perpendicular to each other and electrically connected to each other, the pressure sensor is configured and electrically connected to the second circuit board, and at least one electrical conduction path exists between the pressure sensing surface and the soldering surface of the pressure sensor. The refill module comprises a refill arranged on the same (central) axis, a fixing piece and an abutting piece, wherein the refill module is conductive, and the abutting piece abuts against the pressure sensing surface. Accordingly, the components form a conducting circuit, and the conducting circuit is used for transmitting the TX signal generated by the first circuit board to the pen core. The pressure sensor is used as a medium for transmitting signals by the active stylus, so that an additional signal transmission component is omitted, the internal space of the active stylus can be effectively saved, the signal transmission path is shortened, and the aim of improving the sensing efficiency is fulfilled.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims (10)

1. An active stylus, comprising:
a housing;
the circuit board module is arranged in the shell;
the pressure sensor is provided with a pressure sensing surface and a welding surface which are opposite to each other, is arranged through the welding surface and is electrically connected to the circuit board module, and at least one electric conduction path exists between the pressure sensing surface and the welding surface; and
and the refill module is partially arranged in the shell and is abutted against the pressure sensing surface, wherein the circuit board module generates signals and transmits the signals to the refill module through the pressure sensor.
2. The active stylus of claim 1, wherein the circuit board module, the pressure sensor, and the cartridge module are sequentially arranged along a central axis of the active stylus.
3. The active stylus of claim 1, wherein the pressure sensor further comprises a plurality of conductive portions disposed on the soldering surface, wherein one of the conductive portions is electrically connected to the pressure sensing surface along the electrically conductive path.
4. The active stylus of claim 1, wherein the electrically conductive path passes through a case of the pressure sensor.
5. The active stylus of claim 1, wherein the signal is a TX signal.
6. The active stylus of claim 1, wherein the cartridge module comprises: the pen core, the fixing piece and the abutting piece are all conductive, the abutting piece and the pen core are respectively assembled at two opposite ends of the fixing piece, the part of the pen core protrudes out of the shell, and the abutting piece abuts against the pressure sensing surface.
7. The active stylus of claim 6, wherein the cartridge, the retainer, and the abutment are located on a central axis of the active stylus.
8. The active stylus of claim 1, wherein the circuit board module comprises a first circuit board and a second circuit board, the pressure sensor is disposed and electrically connected to the second circuit board, and the second circuit board is disposed on a side surface of the first circuit board and electrically connected to the first circuit board.
9. The active stylus of claim 8, wherein the second circuit board is perpendicular to the first circuit board.
10. The active stylus of claim 8, wherein the first circuit board has a plurality of first pads and an upper surface and a lower surface opposite to each other, the side surface is adjacent between the upper surface and the lower surface, the plurality of first pads are respectively disposed on the upper surface and the lower surface, the second circuit board has a plurality of second pads opposite to the pressure sensor, the second circuit board is abutted on the side surface, and the first circuit board and the second circuit board are electrically connected to each other only by the plurality of first pads being respectively soldered to the plurality of second pads.
CN202211698642.4A 2022-01-03 2022-12-28 Active stylus Pending CN116382494A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW111100111 2022-01-03
TW111100111A TWI805168B (en) 2022-01-03 2022-01-03 Active stylus

Publications (1)

Publication Number Publication Date
CN116382494A true CN116382494A (en) 2023-07-04

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ID=86979362

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211698642.4A Pending CN116382494A (en) 2022-01-03 2022-12-28 Active stylus

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CN (1) CN116382494A (en)
TW (1) TWI805168B (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW201516766A (en) * 2013-10-18 2015-05-01 Waltop Int Corp Stylus
TWI599919B (en) * 2016-10-28 2017-09-21 翰碩電子股份有限公司 Capacitive stylus with two transmit electrodes
TWI630513B (en) * 2017-08-04 2018-07-21 Waltop International Corporation Capacitive stylus providing signals for tilt and orientation detection
TWI702518B (en) * 2019-06-05 2020-08-21 群光電子股份有限公司 Stylus pen
CN110456925A (en) * 2019-08-05 2019-11-15 深圳市千分一智能技术有限公司 A kind of pressure sensor module and active pen of active capacitance pen
TWM619459U (en) * 2021-06-11 2021-11-11 立邁科技股份有限公司 Active stylus

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Publication number Publication date
TW202328878A (en) 2023-07-16
TWI805168B (en) 2023-06-11

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