CN213690554U - Active pen - Google Patents

Abstract

An active pen defines a touch area. The active pen comprises a pen point, a shell, a pen core and a touch structure located between the pen core and the shell. The touch structure recognizes a touch operation in the touch area. The touch structure comprises a touch layer and a touch scanning driving circuit board. The touch layer comprises a plurality of sensing electrodes arranged in a matrix and a plurality of sensing lines. The touch layer defines a plurality of sensing channels. The sensing line is arranged in the sensing channel. Each sensing electrode is electrically connected with the touch scanning driving circuit board through one sensing line. The shell is composed of a plurality of side walls and a connecting wall positioned between two adjacent side walls. Each connecting wall is arranged opposite to the plurality of sensing electrodes arranged along the first direction, and the sensing channels are arranged opposite to the side walls, so that the touch detection sensitivity of the active pen on the connecting wall can be improved.

Description

Active pen

Technical Field

The utility model relates to an initiative pen.

Background

The active pen can be used for realizing the touch detection application requirement by surrounding the pen core or being attached to the inner wall of the pen cap of the active pen to form a touch layer. The touch layer can form a touch capacitor with a finger holding the active pen to sense touch operation, and input of different instructions or contents can be realized according to different touch operations, such as active pen tip type switching, image zooming in or out, and the like. The area where the touch layer is located is a touch sensing area. The touch layer includes a plurality of sensing electrodes. The sensing principle of the touch layer is that when at least one finger is in contact with the touch sensing area, the finger and the sensing electrode form capacitance according to a capacitive coupling effect, and the touch scanning driving circuit is used for scanning, detecting and converting the sensing electrode so as to output a touch signal according to capacitance variation and further realize touch input. The pen cap with a polygonal structure generally includes a plurality of sidewalls and a connecting region (or pen edge) between two adjacent sidewalls. When the active pen is held, fingers mainly contact pen edges of the active pen, the contact area between the fingers and the pen edges is larger than that of a flat area, and capacitance variables detected by the active pen in the market at the pen edges are smaller than those detected at the flat area, so that the adverse phenomenon can cause that touch operation is ignored, and touch detection is not sensitive enough.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an initiative pen aims at solving among the prior art problem that touch detection is sensitive inadequately.

An active pen, the active pen defining a touch area; the active pen comprises a pen point, a shell, a pen core and a touch structure; the touch structure is arranged between the shell and the pen core; the touch structure is used for identifying touch operation in the touch area; the touch structure comprises a touch layer and a touch scanning driving circuit board; the touch layer is positioned in the touch area and comprises a plurality of coplanar sensing electrodes and a plurality of sensing lines which are arranged in a matrix; the touch layer is also defined with a plurality of sensing channels; the sensing line is arranged in the sensing channel; each sensing electrode is electrically connected with the touch scanning driving circuit board through one sensing line; the shell is composed of a plurality of side walls and a connecting wall positioned between two adjacent side walls; the sensing channels are arranged along a first direction; the first direction is the axis direction of the active pen; each of the connection walls is disposed opposite to the plurality of sensing electrodes disposed along the first direction, and the sensing channels are disposed opposite to the side walls.

Optionally, the touch scanning driving circuit board is arranged at one end of the touch layer, which is far away from the pen tip; a wiring area and a device area are defined on the touch scanning driving circuit board; the routing area is positioned between the touch layer and the device area; the sensing line is electrically connected with the electronic element in the device area after passing through the wiring area; the routing area comprises a first sub-area and a second sub-area; the first sub-area is arranged opposite to the touch layer; the second sub-area is formed by extending the first sub-area along a second direction and is arranged in a staggered manner with the touch layer; in the second direction, the device region is arranged adjacent to the second sub-region and staggered with the first sub-region; wherein the second direction is perpendicular to an axial direction of the active pen.

Optionally, the touch layer comprises a first edge and a second edge; the first edge and the second edge are symmetrically disposed along the first direction.

Optionally, the second sub-region is disposed adjacent to the first edge.

Optionally, the second sub-region is disposed adjacent to the second edge.

Optionally, the routing area further includes an adjustment area; the adjustment region is disposed between the first and second sub-regions to ensure a relative disposition between the connection wall and the sensing electrode and a relative disposition of the sensing channel and the sidewall.

Optionally, the touch layer and the routing area of the touch scan driving circuit board are formed by the same flexible circuit board (FPC).

Optionally, a touch chip is disposed in a device region of the touch scan driving circuit board.

Optionally, the touch scanning driving circuit board is fixed on the pen core through the touch chip.

Optionally, the touch layer is wound on the pen core.

Above-mentioned initiative pen, through with the connecting wall with the sensing electrode sets up relatively, has increased the sensing area between finger and the connecting wall, has improved the finger and has been in the capacitance variation that can sense when touching on the connecting wall. Meanwhile, the sensing channel is arranged opposite to the side wall, so that the influence of the sensing line on the capacitance variation on the side wall is reduced. Therefore, the sensing sensitivity of the active pen is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic perspective view of the active pen of the present invention.

Fig. 2 is a side view of the active pen of fig. 1.

Fig. 3 is a schematic cross-sectional view of the active pen of fig. 1 taken along line III-III.

Fig. 4 is a schematic plan-view expanded view of the touch structure of the first embodiment in fig. 1.

Fig. 5 is a schematic plan-view expanded view of the touch structure of the second embodiment in fig. 1.

Fig. 6 is a schematic plan-view expanded view of the touch structure of the third embodiment in fig. 1.

Fig. 7 is a schematic diagram of capacitance change of the active pen in fig. 1.

Fig. 8 is a schematic diagram of capacitance change of an active pen in the prior art.

Description of the main elements

Active pen 100

Pen tip 10

Pen holder 20

Touch area 101

Case 21

Side wall 201

Connecting wall 203

Pencil lead 23

Touch structure 25, 25a, 25b, 25c

Touch layer 251

Touch scan driving circuit board 253

Sense electrodes 2512, CH0-CH4

Sense channels 2513, CH0-CH1, CH1-CH2,

CH2-CH3，CH3-CH4

sense line 2514

First edge 2516

Second edge 2518

Device region 2531

Routing region 2532

Touch control chip 2533

First subregion 2534

Second subregion 2536

Adjustment region 2538

The following detailed description of the invention will be further described in conjunction with the above-identified drawings.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

The terms "first", "second" and "third" etc. in the description of the invention and the above-mentioned drawings are used for distinguishing different objects and not for describing a particular order. Furthermore, the terms "comprises" and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or modules is not limited to the listed steps or modules but may alternatively include other steps or modules not listed or inherent to such process, method, article, or apparatus.

The following describes a specific embodiment of the propelling pen of the present invention with reference to the drawings.

Please refer to fig. 1, which is a schematic perspective view of an active pen 100 according to an embodiment of the present invention. The active pen 100 is used to implement input according to a touch operation of a user. The active pen 100 may also be used with other external devices (not shown) having a display function to input or receive feedback signals from the external devices. The external device may be a mobile phone, a tablet computer, a Personal Digital Assistant (PDA), a wearable watch, and the like, but is not limited thereto.

The active pen 100 includes a nib 10 and a barrel 20. The user controls the pen tip 10 to perform an input operation on the surface of the external device by holding the pen holder 20. At least one sensor (not shown) may be disposed within the tip 10. The sensor is used to sense the contact of the pen tip 10 with the surface of the external device. In at least one embodiment of the present invention, the sensor may be at least one of a capacitive sensor, a piezoelectric sensor, a proximity sensor, a camera, and a photodiode, or a combination of different sensors. And (5) writing.

As shown in FIG. 2, the active pen 100 defines a touch area 101. The user can perform different touch operations in the touch area 101 to control the active pen 100 to switch different functions. The touch operation may be a click operation (single-click or multi-click), a gesture slide, and the like, but is not limited thereto. According to the different touch operations, the thickness of the line drawn by the active pen 100 on the external device may be changed, and the image displayed on the external device may be enlarged or reduced, but the present invention is not limited thereto. In at least one embodiment of the present invention, the touch area 101 is formed by an area where the pen barrel 20 is close to the pen tip 10 and an area where the pen tip 10 is close to the pen barrel 20. In other embodiments, the touch area 101 may be located entirely within the pen barrel 20, for example, the touch area may be formed by an area located near the pen tip 10 of the pen barrel 20 and an area located far from the pen tip 10 of the pen barrel 20.

Please refer to fig. 3, which is a cross-sectional view of the active pen 100 along the cross-sectional line III-III. The cartridge 20 includes a housing 21, a cartridge 23, and a touch structure 25. The housing 21 is substantially hollow. The housing 21 is made of an insulating material. The pen core 23 is accommodated in the housing 21 for accommodating various electronic components such as, but not limited to, a circuit board, a gyro sensor, a switch, a button, and the like. The housing 21 has a polygonal structure, and includes a plurality of sidewalls 201 and a plurality of connecting walls 203. Any two side walls 201 are connected through the connecting wall 203. The side walls 201 and the connecting wall 203 each extend in a first direction X. The first direction X is an axial direction of the active pen 100.

The touch structure 25 corresponds to the touch area 101 and is used for sensing a touch operation of a conductor in the touch area 101. Wherein the conductor may be a finger or other conductive structure. The touch structure 25 may be disposed between the housing 21 and the pen core 23. In at least one embodiment of the present invention, the touch structure 25 is wound around and attached to the outer surface of the pen core 23. In other embodiments, the touch structure 25 may be wrapped around and attached to the inner surface of the housing 21. In at least one embodiment of the present invention, the touch structure 25 may be a flexible circuit board (FPC) integrated with a plurality of electronic components and a plurality of lines.

Please refer to fig. 4, which is a schematic expanded plan view of the touch structure 25a of the first embodiment. The touch structure 25a includes a touch layer 251 and a touch scan driving circuit board 253. The touch layer 251 is made of a conductive material. The touch layer 251 is patterned to form a plurality of sensing electrodes 2512. A plurality of the sensing electrodes 2512 are arranged in a matrix. Each sensing electrode 2512 is electrically connected to the touch scan driving circuit board 253 through a sensing line 2514. The sense electrode 2512 can generate an induced capacitance according to a capacitive coupling effect when the conductor is in contact with the active pen 100. A plurality of sensing electrodes 2512 in the same column arranged in the first direction X are arranged opposite to the same connecting wall 203. The touch layer 251 also defines a plurality of sensing channels 2513. The sensing channel 2513 extends in the first direction X. At least one sensing line 2514 is disposed in the sensing channel 2513. Each of the sensing channels 2513 is disposed opposite one of the sidewalls 201. The touch layer 251 also includes a first edge 2516 and a second edge 2518. The first edge 2516 and the second edge 2518 are symmetrically disposed along the first direction X. The sense line 2514 and the sense electrode 2512 can be fabricated in the same layer for a slim design. In other embodiments, the sense line 2514 and the sense electrode 2512 can also be two layered.

The touch scan driving circuit board 253 is electrically connected to the touch layer 251. The touch scan driving circuit board 253 is used for sequentially scanning the sensing electrodes 2512 to recognize a touch operation in the touch area 101. The touch scan driving circuit board 253 is disposed at an end of the touch layer 251 far away from the pen tip 10. The touch scan driving circuit board 253 defines a device region 2531 and a trace region 2532. The trace region 2532 is located between the touch layer 251 and the device region 2531. In at least one embodiment of the present invention, the trace region 2532, the device region 2531 and the touch layer 251 can be electrically connected to each other by plugging. The sensing line 2514 passes through the trace region 2532 and then is electrically connected to the electronic devices in the device region 2531. The trace region 2532 includes a first sub-region 2534 and a second sub-region 2536. The first sub region 2534 is disposed opposite to the touch layer 251. The second sub region 2536 is formed by extending the first sub region 2534 along the second direction Y, and is disposed in a staggered manner with respect to the touch layer 251. In the second direction Y, the device region 2531 is disposed adjacent to the second subregion 2536 and is staggered from the first subregion 2534. Wherein the second direction Y is perpendicular to the first direction Y. The second subregion 2536 is disposed adjacent to the first edge 2516. A touch chip 2533 is disposed on the device region 2531. The touch scan driving circuit board 253 is fixed on the pen core 23 through the touch chip 2533. In at least one embodiment of the present invention, the touch layer 251 and the trace region 2532 are formed by the same flexible circuit board.

Please refer to fig. 5, which is a schematic plan-view expanded view of the touch structure 25b of the second embodiment. The touch structure 25b of the second embodiment has the same structure as the touch structure 25a of the first embodiment. That is, the description of the touch structure 25a described in the first embodiment can be basically applied to the touch structure 25b of the second embodiment, with the main difference: the location of the second sub-region 2536. In the second embodiment, the second subregion 2536 is disposed adjacent to the first edge 2516.

Please refer to fig. 6, which is a schematic expanded plan view of the touch structure 25c according to the third embodiment. The touch structure 25c of the third embodiment has the same structure as the touch structure 25a of the first embodiment. That is, the description of the touch structure 25a described in the first embodiment can be basically applied to the touch structure 25c of the third embodiment, with the main difference: the routing region 2532. In the third embodiment, the routing region 2532 further includes an adjustment region 2538. The adjustment region 2538 is disposed between the first sub-region 2534 and the second sub-region 2536. The adjustment region 2538 is used to adjust the relative position between the connecting wall 203 and the sensing electrode 2512 and the relative position of the sensing channel 2513 and the side wall 201. In at least one embodiment of the present invention, the length of the adjusting region 2538 along the second direction Y can be adjusted according to the requirement.

The assembly process of the active pen 100 is as follows:

the touch scan driving circuit board 253 is fixed on the pen core 23, and the touch layer 251 is wound around the pen core 23. The housing 21 is then sleeved outside the touch layer 251 such that the connecting wall 203 is disposed opposite the sensing electrode 2512 and the sensing channel 2513 is disposed opposite the side wall 201. If the connecting wall 203 and the sensing electrode 2512 are not disposed opposite to each other and/or the sensing channel 2513 and the side wall 201 are not disposed opposite to each other, the routing region 2532 of the adjustment region 2538 with different lengths is replaced to realize that the connecting wall 203 and the sensing electrode 2512 are disposed opposite to each other and the sensing channel 2513 and the side wall 201 are disposed opposite to each other.

Please refer to fig. 7, which illustrates the capacitance variation of the active pen 100 when a single finger touches. Fig. 7 illustrates fig. 4, in which 5 sensing electrodes 2512 arranged in the first direction Y are denoted as CH0-CH4, and the sensing channels 2513 located between two adjacent sensing electrodes 2512 are denoted as CH0-CH1, CH1-CH2, CH2-CH3, and CH3-CH 4. As can be seen from fig. 6, the capacitance variation is about 1000 when a single-finger touch operation is performed on the sensing channels CH0-CH1, CH1-CH2, CH2-CH3, and CH3-CH4, and the capacitance variation is about 1000 when a single-finger touch operation is performed on the sensing electrodes CH0-CH4, which are not much different from each other. That is, the touch operations of the active pen 100 on the side wall 201 and the connection wall 203 have similar capacitance variation amounts, and therefore, the sensitivity of the active pen 100 to the detection on the connection wall 203 is improved.

Please refer to fig. 8, which shows capacitance variation of the active pen 100 in the prior art when a single finger touch is performed. Fig. 8 shows 5 sensing electrodes 2512 arranged along the first direction Y as CH0-CH4, and the sensing channels 2513 between two adjacent sensing electrodes 2512 as CH0-CH1, CH1-CH2, CH2-CH3 and CH3-CH 4. As can be seen from FIG. 8, the capacitance variation is about 400-600 when the single-finger touch operation is performed on the sensing channels CH0-CH1, CH1-CH2, CH2-CH3 and CH3-CH4, and the capacitance variation is 1200-1400 when the single-finger touch operation is performed on the sensing electrodes CH0-CH4, which have a large difference therebetween. Easily causing the touch operation on the connecting wall 203 to be neglected.

Based on the active pen 100 with the above structure, by arranging the connection wall 203 opposite to the plurality of sensing electrodes 2512 along the first direction X, the sensing area between the finger and the connection wall 203 is increased, and the capacitance variation amount which can be sensed when the finger touches the connection wall 203 is increased. Meanwhile, the sensing channel 2513 is arranged opposite to the side wall 201, so that the influence of the sensing line 2514 on the capacitance variation of the side wall 201 is reduced. Accordingly, the sensing sensitivity of the active pen 100 is improved.

It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of action combinations, but those skilled in the art should understand that the present invention is not limited by the described action sequence, because some steps can be performed in other sequences or simultaneously according to the present invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required by the invention.

It should also be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. An active pen, the active pen defining a touch area; the active pen comprises a pen point, a shell, a pen core and a touch structure; the touch structure is arranged between the shell and the pen core; the touch structure is used for identifying touch operation in the touch area; the method is characterized in that: the touch structure comprises a touch layer and a touch scanning driving circuit board; the touch layer is positioned in the touch area and comprises a plurality of coplanar sensing electrodes and a plurality of sensing lines which are arranged in a matrix; the touch layer is also defined with a plurality of sensing channels; the sensing line is arranged in the sensing channel; each sensing electrode is electrically connected with the touch scanning driving circuit board through one sensing line; the shell is composed of a plurality of side walls and a connecting wall positioned between two adjacent side walls; the sensing channels are arranged along a first direction; the first direction is the axis direction of the active pen; each of the connection walls is disposed opposite to the plurality of sensing electrodes disposed along the first direction, and the sensing channels are disposed opposite to the side walls.

2. The active pen of claim 1, wherein the touch scan driver circuit board is disposed at an end of the touch layer away from the pen tip; a wiring area and a device area are defined on the touch scanning driving circuit board; the routing area is positioned between the touch layer and the device area; the sensing line is electrically connected with the electronic element in the device area after passing through the wiring area; the routing area comprises a first sub-area and a second sub-area; the first sub-area is arranged opposite to the touch layer; the second sub-area is formed by extending the first sub-area along a second direction and is arranged in a staggered manner with the touch layer; in the second direction, the device region is arranged adjacent to the second sub-region and staggered with the first sub-region; wherein the second direction is perpendicular to an axial direction of the active pen.

3. The active pen of claim 2, wherein the touch layer comprises a first edge and a second edge; the first edge and the second edge are symmetrically disposed along the first direction.

4. The active pen of claim 3, wherein the second subregion is disposed adjacent to the first edge.

5. The active pen of claim 3, wherein the second subregion is disposed adjacent to the second edge.

6. The active pen of claim 2, wherein the routing area further comprises an adjustment area; the adjustment region is disposed between the first and second sub-regions to ensure a relative disposition between the connection wall and the sensing electrode and a relative disposition of the sensing channel and the sidewall.

7. The active pen of claim 2, wherein the touch layer and the trace area of the touch scan driver circuit board are formed by the same flexible circuit board.

8. The active pen of claim 2, wherein the device area of the touch scan driver circuit board is provided with a touch chip.

9. The active pen of claim 8, wherein the touch scan driving circuit board is fixed to the pen core through the touch chip.

10. The active pen of claim 1, wherein the touch layer is disposed around the pen core.

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