TWI834070B - Active stylus - Google Patents
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- TWI834070B TWI834070B TW110138216A TW110138216A TWI834070B TW I834070 B TWI834070 B TW I834070B TW 110138216 A TW110138216 A TW 110138216A TW 110138216 A TW110138216 A TW 110138216A TW I834070 B TWI834070 B TW I834070B
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- 238000010586 diagram Methods 0.000 description 2
- 241001422033 Thestylus Species 0.000 description 1
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Abstract
Description
本發明是有關於一種觸控筆，且特別是有關於一種主動式觸控筆。 The present invention relates to a stylus, and in particular to an active stylus.
隨著科技的進步與發展，市面上有多種電子裝置都採用觸控面板(touch panel)或觸控板(touch pad)作為操作介面，使用者通常以手指在觸控面板上操作，但是用手指在觸控面板上滑動時因手指接觸面積較廣而容易造成摩擦力太大，不適合大量或快速輸入，同時也可能發生誤觸的情形，因此便有觸控筆問世。 With the advancement and development of technology, a variety of electronic devices on the market use touch panels or touch pads as operating interfaces. Users usually use their fingers to operate on the touch panels, but using their fingers When sliding on the touch panel, the large contact area of the finger can easily cause too much friction, which is not suitable for large-scale or rapid input. At the same time, accidental touches may also occur, so the stylus was born.
既有的觸控筆可分為主動式與被動式，其中主動式觸控筆是由筆內的訊號發射電路發送訊號，而使相應的觸控面板(或觸控板)收到訊號後判斷其被接觸位置的座標以及觸壓力。也就是說，主動式觸控筆是通過筆芯受驅動(書寫)時，將筆芯所受的壓力傳送至力感測器以產生觸壓力的感測訊號。 Existing stylus pens can be divided into active and passive types. The active stylus sends a signal from the signal transmitting circuit in the pen, so that the corresponding touch panel (or touchpad) receives the signal and determines its The coordinates of the touched position and the contact force. That is to say, the active stylus transmits the pressure on the pen core to the force sensor when the pen core is driven (writing) to generate a sensing signal of touch force.
如此一來，筆芯與力感測器之間的相互關係便成為影響能否所述力感測器是否忠實反應當下的觸壓力的重要因素。 As a result, the relationship between the pen core and the force sensor becomes an important factor that affects whether the force sensor can faithfully reflect the current touch pressure.
本發明提供一種主動式觸控筆，其提供筆芯與力感測器之間穩定的結構抵接關係。 The present invention provides an active stylus that provides a stable structural contact relationship between the pen core and the force sensor.
本發明的主動式觸控筆，包括筆殼與筆芯模組。筆芯模組設置於筆殼內且包括電路板組件、力感測器以及筆芯。力感測器設置於電路板組件的一端，且力感測器具有感壓面，背對電路板組件。筆芯具有彼此相對的尖端與抵接端，尖端突出於筆殼外，抵接端是曲面且抵接於感壓面，其中曲面的面積大於感壓面的面積。 The active touch pen of the present invention includes a pen case and a pen core module. The refill module is arranged in the pen case and includes a circuit board component, a force sensor and a refill. The force sensor is arranged at one end of the circuit board assembly, and the force sensor has a pressure-sensitive surface facing away from the circuit board assembly. The pen core has a tip and an abutting end that are opposite to each other. The tip protrudes from the pen shell. The abutting end is a curved surface and abuts against the pressure-sensitive surface. The area of the curved surface is larger than the area of the pressure-sensitive surface.
在本發明的一實施例中，上述的曲面是弧面，且感壓面是弧面的其中一切平面。 In an embodiment of the present invention, the above-mentioned curved surface is an arc surface, and the pressure-sensitive surface is any plane of the arc surface.
在本發明的一實施例中，上述的曲面是球面，且感壓面是球面的其中一切平面。 In an embodiment of the present invention, the above-mentioned curved surface is a spherical surface, and the pressure-sensitive surface is any plane of the spherical surface.
在本發明的一實施例中，上述曲面的曲率中心位於筆芯的中心軸上。 In an embodiment of the present invention, the center of curvature of the above-mentioned curved surface is located on the central axis of the pen core.
在本發明的一實施例中，上述感壓面的中心位於筆芯的中心軸上。 In an embodiment of the present invention, the center of the pressure-sensitive surface is located on the central axis of the pen core.
在本發明的一實施例中，上述的曲面在感壓面所在平面上的正投影面積大於感壓面的面積。 In an embodiment of the present invention, the orthogonal projection area of the above-mentioned curved surface on the plane where the pressure-sensitive surface is located is larger than the area of the pressure-sensitive surface.
在本發明的一實施例中，上述的感壓面是平面，筆芯的中心軸正交於平面，曲面抵接於平面的中心。 In one embodiment of the present invention, the pressure-sensitive surface is a flat surface, the central axis of the pen core is orthogonal to the flat surface, and the curved surface is in contact with the center of the flat surface.
在本發明的一實施例中，上述的力感測器是以微機電結 構製成的電容式力感測器。 In an embodiment of the present invention, the above-mentioned force sensor is made of a microelectromechanical structure Constructed capacitive force sensor.
基於上述，主動式觸控筆通過筆芯模組中筆芯與力感測器的對應關係，也就是讓筆芯的抵接端是曲面，且抵接於力感測器的感壓面，且曲面的面積大於感壓面的面積。如此一來，筆芯因其抵接端是曲面，而能持續且穩定地抵接於感壓面，進而避免抵接端可能因筆芯受力角度的影響而相對於感壓面產生偏移，甚或使抵接端移離感壓面的情形發生。 Based on the above, the active stylus uses the corresponding relationship between the pen core and the force sensor in the pen core module, that is, the contact end of the pen core is a curved surface and contacts the pressure-sensitive surface of the force sensor. And the area of the curved surface is larger than the area of the pressure-sensitive surface. In this way, because the contact end of the pen core is a curved surface, it can continuously and stably contact the pressure-sensitive surface, thereby preventing the contact end from being offset relative to the pressure-sensitive surface due to the influence of the force angle of the pen core. , or even cause the contact end to move away from the pressure-sensitive surface.
100:主動式觸控筆 100:Active stylus
110:筆芯模組 110: Pen refill module
111:電路板組件 111:Circuit board components
111a:主板 111a: motherboard
111b:子板 111b: daughter board
112:筆芯 112: Pen refill
113:力感測器 113: Force sensor
113a:凸塊 113a: Bump
113b:基部 113b: base
114:電池 114:Battery
120:筆殼 120: Pen case
121:筆身 121: pen body
122:筆頭 122: pen tip
123、124:半殼部件 123, 124: Half shell parts
A1:外殼 A1: Shell
A2:內殼 A2: Inner shell
AR1、AR2:面積 AR1, AR2: area
C1:曲率中心 C1: Center of curvature
C2:中心 C2: Center
E1:抵接端 E1: contact end
E2:尖端 E2: Tip
L1:中心軸 L1: central axis
P1:感壓面 P1: pressure sensitive surface
P2:曲面 P2: Surface
PL:平面 PL: plane
X-Y-Z:直角座標 X-Y-Z: Cartesian coordinates
圖1是依據本發明一實施例的主動式觸控筆的示意圖。 FIG. 1 is a schematic diagram of an active stylus according to an embodiment of the present invention.
圖2是圖1的主動式觸控筆的***圖。 FIG. 2 is an exploded view of the active stylus of FIG. 1 .
圖3是圖1的主動式觸控筆的局部剖視圖。 FIG. 3 is a partial cross-sectional view of the active stylus of FIG. 1 .
圖1是依據本發明一實施例的主動式觸控筆的示意圖。圖2是圖1的主動式觸控筆的***圖。在此同時提供直角座標X-Y-Z以利於構件描述。請同時參考圖1與圖2，本實施例的主動式觸控筆100，包括筆殼120與筆芯模組110。筆殼120包括外殼A1與內殼A2。外殼A1包括筆身121與筆頭122，內殼A2包括兩個半殼部件123、124。筆芯模組110設置於筆殼120內，且筆芯模組110包括電路板組件111、力感測器113、筆芯112以及電池
114，其中電路板組件111、力感測器113與筆芯112的局部收納於半殼部件123、124之間，電池114電性連接電路板組件111且位於半殼部件123、124之外，前述構件一併收容於外殼A1，且僅以筆芯112的尖端E2突出且暴露出外殼A1的筆頭122之外。
FIG. 1 is a schematic diagram of an active stylus according to an embodiment of the present invention. FIG. 2 is an exploded view of the active stylus of FIG. 1 . At the same time, the rectangular coordinates X-Y-Z are provided to facilitate component description. Please refer to FIG. 1 and FIG. 2 at the same time. The
圖3是圖1的主動式觸控筆的局部剖視圖。請同時參考圖2與圖3，電路板組件111包括沿Z軸銲接在一起的主板111a與子板111b，其中電池114銲接至主板111a且與子板111b位於主板111a的相對兩端。主板111a與子板111b的板體相互垂直，且力感測器113設置於子板111b上而位於電路板組件111遠離電池114的一端。力感測器113具有感壓面P1，背對於電路板組件111。筆芯112具有彼此相對的尖端E2與抵接端E1，尖端E2如前述是突出於筆殼120的筆頭122之外，而抵接端E1是曲面P2且抵接於感壓面P1，其中曲面P2的面積大於感壓面P1的面積。
FIG. 3 is a partial cross-sectional view of the active stylus of FIG. 1 . Please refer to FIGS. 2 and 3 simultaneously. The circuit board assembly 111 includes a main board 111 a and a sub-board 111 b welded together along the Z-axis. The battery 114 is welded to the main board 111 a and is located at opposite ends of the main board 111 a with the sub-board 111 b. The boards of the main board 111a and the daughter board 111b are perpendicular to each other, and the force sensor 113 is disposed on the daughter board 111b and is located at an end of the circuit board assembly 111 away from the battery 114. The force sensor 113 has a pressure-sensitive surface P1 facing away from the circuit board assembly 111 . The pen core 112 has a tip E2 and a contact end E1 that are opposite to each other. The tip E2 protrudes outside the
本實施例的力感測器113例如是以微機電結構製成的電容式力感測器，其包括基部113b(例如是封裝體)與凸塊113a，其中基部113b銲接於子板111b，凸塊113a沿Z軸朝向筆芯112突出且抵接在筆芯112的抵接端E1的曲面P2。在此，凸塊113a具有感壓面P1，其中凸塊113a之所以具有突出於基部113b的幾何輪廓，即在於讓筆芯112傳來的壓力能集中於凸塊113a上。 The force sensor 113 of this embodiment is, for example, a capacitive force sensor made of a microelectromechanical structure, which includes a base 113b (such as a package) and a bump 113a, where the base 113b is welded to the daughter board 111b, and the bump 113a. The block 113 a protrudes toward the pen core 112 along the Z axis and abuts against the curved surface P2 of the contact end E1 of the pen core 112 . Here, the bump 113a has a pressure-sensitive surface P1. The reason why the bump 113a has a geometric profile protruding from the base 113b is to allow the pressure from the pen core 112 to be concentrated on the bump 113a.
基於上述，筆芯112藉由其的抵接端E1是曲面P2，且曲面P2的面積大於感壓面P1的面積，因此能確保筆芯112的曲面P2不會偏離更不會移離感壓面P1，而使筆芯112無論如何皆仍能 穩定地抵接於感壓面P1。換句話說，當筆芯112在書寫時受到異於中心軸L1的其他方向外力時，其仍能與感壓面P1保持抵接關係而不產生偏移。 Based on the above, the contact end E1 of the pen core 112 is a curved surface P2, and the area of the curved surface P2 is larger than the area of the pressure-sensitive surface P1. Therefore, it is ensured that the curved surface P2 of the pen core 112 will not deviate or move away from the pressure-sensitive surface. Face P1, so that the refill 112 can still Stable contact with the pressure-sensitive surface P1. In other words, when the pen core 112 is subjected to an external force in another direction different from the central axis L1 during writing, it can still maintain an abutting relationship with the pressure-sensitive surface P1 without causing deviation.
詳細來說，如圖2與圖3所示，本實施例的曲面P2是弧面，且感壓面P1是弧面的其中一切平面。更進一步地說，本實施例的曲面P2還可以進一步為球面(或其局部)，且同樣使感壓面P1為球面的其中一切平面。同時，所述曲面P2的曲率中心C1是位於筆芯112的中心軸L1上，且感壓面P1的中心C2也位於筆芯112的中心軸L1上。在本實施例中，筆芯112的中心軸L1是沿著Z軸延伸。 Specifically, as shown in FIGS. 2 and 3 , the curved surface P2 in this embodiment is an arc surface, and the pressure-sensitive surface P1 is any plane of the arc surface. Furthermore, the curved surface P2 in this embodiment may further be a spherical surface (or a part thereof), and the pressure-sensitive surface P1 may also be any plane of the spherical surface. At the same time, the curvature center C1 of the curved surface P2 is located on the central axis L1 of the pen core 112 , and the center C2 of the pressure-sensitive surface P1 is also located on the central axis L1 of the pen core 112 . In this embodiment, the central axis L1 of the pen core 112 extends along the Z-axis.
再者，請參考圖3，在本實施例中，曲面P2在感壓面P1所在平面PL上的正投影面積大於感壓面P1的面積，也就是曲面P2在感壓面P1所在平面PL上的正投影面積AR1大於感壓面P1的面積AR2。同時，本實施例的感壓面P1是平面，筆芯112的中心軸L1正交於平面(感壓面P1)，曲面P2抵接於平面(感壓面P1)的中心。如此一來，便如圖3右上角所示圖式，即使筆芯112產生偏轉，由於曲面P2的存在，且曲面P2的面積大於感壓面P1的面積，因此筆芯112的抵接端E1仍維持與感壓面P1的中心C2抵接的狀態。據此，筆芯112在其尖端E2所受之力便能忠實且無誤地傳送至抵接端E1，而據以穩定地壓於感壓面P1上。 Furthermore, please refer to Figure 3. In this embodiment, the orthographic projection area of the curved surface P2 on the plane PL where the pressure-sensitive surface P1 is located is larger than the area of the pressure-sensitive surface P1. That is, the curved surface P2 is on the plane PL where the pressure-sensitive surface P1 is located. The orthographic projection area AR1 is larger than the area AR2 of the pressure-sensitive surface P1. At the same time, the pressure-sensitive surface P1 of this embodiment is a flat surface, the central axis L1 of the pen core 112 is orthogonal to the flat surface (pressure-sensitive surface P1), and the curved surface P2 is in contact with the center of the flat surface (pressure-sensitive surface P1). In this way, as shown in the upper right corner of Figure 3, even if the pen core 112 deflects, due to the existence of the curved surface P2, and the area of the curved surface P2 is larger than the area of the pressure-sensitive surface P1, the contact end E1 of the pen core 112 It remains in contact with the center C2 of the pressure-sensitive surface P1. Accordingly, the force exerted by the tip E2 of the pen core 112 can be faithfully and accurately transmitted to the contact end E1, thereby stably pressing on the pressure-sensitive surface P1.
綜上所述，在本發明的上述實施例中，主動式觸控筆通過筆芯模組中筆芯與力感測器的對應關係，也就是讓筆芯的抵接端 是曲面，且抵接於力感測器的感壓面，且曲面的面積大於感壓面的面積。如此一來，筆芯因其抵接端是曲面，而能持續且穩定地抵接於感壓面，進而避免抵接端可能因筆芯受力角度的影響而相對於感壓面產生偏移，甚或使抵接端移離感壓面的情形發生。 To sum up, in the above embodiments of the present invention, the active stylus uses the corresponding relationship between the pen core and the force sensor in the pen core module, that is, the contact end of the pen core It is a curved surface and is in contact with the pressure-sensitive surface of the force sensor, and the area of the curved surface is larger than the area of the pressure-sensitive surface. In this way, because the contact end of the pen core is a curved surface, it can continuously and stably contact the pressure-sensitive surface, thereby preventing the contact end from being offset relative to the pressure-sensitive surface due to the influence of the force angle of the pen core. , or even cause the contact end to move away from the pressure-sensitive surface.
舉例來說，若抵接端是平面，則與同樣為平面的感壓面相較之下，其僅在所述兩平面是彼此平行的狀態下方能保證筆芯與力感測器的感壓面的抵接狀況，只要筆芯稍有偏移，即會造成兩者不平行而導致相互接觸的面積小於前述彼此平行狀態的接觸面積，而需注意的是，主動式觸控筆實際上在書寫時是呈現傾斜狀態，因此造成前述筆芯偏移的施力仍不可避免。 For example, if the contact end is a flat surface, compared with the pressure-sensitive surface that is also a flat surface, it can only ensure the pressure-sensitive surface of the pen core and the force sensor when the two planes are parallel to each other. In the contact situation, as long as the pen core is slightly offset, it will cause the two to be non-parallel, resulting in the mutual contact area being smaller than the aforementioned contact area in the parallel state. It should be noted that the active stylus is actually writing It is in a tilted state at this time, so the force exerted to cause the aforementioned pen core deflection is still unavoidable.
據此，本發明將筆芯的抵接端與力感測器的感壓面予以限定，即前述的對應關係與幾何關係，而能確保筆芯的抵接面無時不刻地抵接於感壓面。 Accordingly, the present invention limits the contact end of the pen core and the pressure-sensitive surface of the force sensor, that is, the aforementioned corresponding relationship and geometric relationship, thereby ensuring that the contact surface of the pen core is in contact with the force sensor at all times. Pressure sensitive surface.
110:筆芯模組 110: Pen refill module
111:電路板組件 111:Circuit board components
111a:主板 111a: motherboard
111b:子板 111b: daughter board
112:筆芯 112: Pen refill
113:力感測器 113: Force sensor
113a:凸塊 113a: Bump
113b:基部 113b: base
114:電池 114:Battery
120:筆殼 120: Pen case
121:筆身 121: pen body
122:筆頭 122: pen tip
123、124:半殼部件 123, 124: Half shell parts
A1:外殼 A1: Shell
A2:內殼 A2: Inner shell
E1:抵接端 E1: contact end
E2:尖端 E2: Tip
X-Y-Z:直角座標 X-Y-Z: Cartesian coordinates
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW110138216A TWI834070B (en) | 2021-10-14 | 2021-10-14 | Active stylus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW110138216A TWI834070B (en) | 2021-10-14 | 2021-10-14 | Active stylus |
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| Publication Number | Publication Date |
|---|---|
| TW202316244A TW202316244A (en) | 2023-04-16 |
| TWI834070B true TWI834070B (en) | 2024-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW110138216A TWI834070B (en) | 2021-10-14 | 2021-10-14 | Active stylus |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9389708B2 (en) * | 2014-05-08 | 2016-07-12 | Atmel Corporation | Active stylus with force sensor |
| TWI563420B (en) * | 2016-06-14 | 2016-12-21 | Chicony Electronics Co Ltd | Stylus pen |
| TW202014853A (en) * | 2018-10-01 | 2020-04-16 | 幸芯科技有限公司 | Touch stylus with directive pressure sensing structure that comprises a stylus tip piece having an end disposed in an insertion trough of a directing piece that has an opposite end forming a projection disposed in a force receiving recess formed in a pressure sensing module |
| CN111258437A (en) * | 2018-11-30 | 2020-06-09 | 得翰株式会社 | Electronic pen |
| CN211554905U (en) * | 2020-04-26 | 2020-09-22 | 深圳金曦宏科技有限公司 | Active capacitive screen pressure induction type touch pen and detachable induction pen point |
-
2021
- 2021-10-14 TW TW110138216A patent/TWI834070B/en active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9389708B2 (en) * | 2014-05-08 | 2016-07-12 | Atmel Corporation | Active stylus with force sensor |
| TWI563420B (en) * | 2016-06-14 | 2016-12-21 | Chicony Electronics Co Ltd | Stylus pen |
| TW202014853A (en) * | 2018-10-01 | 2020-04-16 | 幸芯科技有限公司 | Touch stylus with directive pressure sensing structure that comprises a stylus tip piece having an end disposed in an insertion trough of a directing piece that has an opposite end forming a projection disposed in a force receiving recess formed in a pressure sensing module |
| CN111258437A (en) * | 2018-11-30 | 2020-06-09 | 得翰株式会社 | Electronic pen |
| CN211554905U (en) * | 2020-04-26 | 2020-09-22 | 深圳金曦宏科技有限公司 | Active capacitive screen pressure induction type touch pen and detachable induction pen point |
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| Publication number | Publication date |
|---|---|
| TW202316244A (en) | 2023-04-16 |
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