TW201337655A - Stylus - Google Patents

Abstract

A stylus including a conductive rod, a circuit board, and an antenna is provided. The conductive rod has a first opening. The circuit board having a ground portion is disposed in the conductive rod, wherein the conductive rod is electrically connected to the ground portion. The antenna includes a radiating portion and a feeding portion, wherein the feeding portion electrically connects to the circuit board and extends from the internal of the conductive rod to the external of the conductive rod. The radiating portion is located external of the conductive rod and electrically connects to the feeding portion.

Description

Stylus

This case relates to a stylus, and in particular to a stylus including an antenna.

With the advancement of technology, the current communication method of the masses has gradually changed to wireless communication, such as smart phones, tablet PCs with wireless Internet access, and notebook computers. Even the stylus is a category of wireless communication. In general, wireless communication requires the use of an antenna to transmit messages.

Taking the stylus as an example, in order to meet the design requirements or other design requirements, the stylus often uses metal or other conductive materials as the material of the outer casing. However, if the stylus has a conductive housing, the signal of its antenna may be disturbed by the conductive housing. To this end, new designs are needed to improve the signal transceiving efficiency of the antennas disposed in the conductive housing.

The present invention provides a stylus whose antenna has good signal transmission and reception efficiency.

The present invention proposes a stylus comprising a conductive stylus, a circuit board and an antenna. The conductive pen holder has a first opening. The circuit board is disposed in the conductive pen and has a grounding portion, wherein the conductive pen is electrically connected to the ground. The antenna includes a radiating portion and a feeding portion, wherein the feeding portion is electrically connected to the circuit board and extends from the conductive pen to the outside of the conductive pen via the first opening, and the radiating portion is located outside the conductive pen and electrically connected to the feeding portion.

Based on the above, the conductive pen of the stylus of the present invention is grounded on the grounding surface of the circuit board to reduce the interference caused by the conductive pen to the antenna of the stylus. Therefore, in the case where the material of the stylus pen is made of a conductive material such as metal according to the design requirements or other design requirements, the antenna can still have good signal transmission and reception efficiency.

The above described features and advantages of the invention will be apparent from the following description.

100, 100a, 100b, 200, 200a, 200b, 300‧‧‧ stylus

110, 210, 210b, 210c, 310‧‧‧ conductive pen

112, 212, 312‧‧‧ first opening

114‧‧‧ side

120, 220, 320‧‧‧ circuit boards

122, 222, 322‧‧‧ Grounding Department

130, 130a, 130b, 130c, 230, 230a, 230b, 230c, 330‧‧‧ antenna

132, 132a, 132b, 132c, 232, 232a, 232b, 232c, 332‧‧‧ Radiation Department

134, 134a, 134b, 234, 234a, 334‧‧ ‧Feeding Department

140‧‧‧Insulator

236, 236a, 336‧‧ ‧ grounding section

240‧‧‧Bumps

314‧‧‧Second opening

R1, R2‧‧‧ rotation axis

S1, S2‧‧‧ sliding axis

H1, h2‧‧‧ distance

1A is a perspective view of a stylus according to a first embodiment of the present invention.

1B is a schematic cross-sectional view of the stylus of FIG. 1A.

1C is a cross-sectional view of the stylus of FIG. 1A from another perspective.

Figure 2 is a perspective view showing the radiant portion of Figure 1A rotated to another position.

3A is a perspective view of a stylus according to a second embodiment of the present invention.

Figure 3B is a partial side elevational view of Figure 3A.

4A is a perspective view showing the rotation of the radiation portion of FIG. 3A to another position.

4B is a partial side elevational view of FIG. 4A.

FIG. 5A is a perspective view of a stylus according to a third embodiment of the present invention.

Figure 5B is a schematic cross-sectional view of the antenna of Figure 5A.

Figure 6 is a perspective view showing the radiant portion of Figure 5A slid to another position.

Figure 7A is another embodiment of the antenna of Figure 1A.

Fig. 7B is a shortened length of the radiation portion of Fig. 7A.

FIG. 8A is a perspective view of a stylus according to a fourth embodiment of the present invention.

8B is a schematic cross-sectional view of the stylus of FIG. 8A.

Figure 8C is a cross-sectional view of the stylus of Figure 8A in another perspective.

Figure 9 is a perspective view showing the radiant portion of Figure 8A slid to another position.

FIG. 10A is a perspective view of a stylus according to a fifth embodiment of the present invention.

Figure 10B is a side elevational view of Figure 10A.

Figure 11A is a perspective view showing the feeding portion and the grounding portion of Figure 10A as they are elongated.

Figure 11B is a side elevational view of Figure 11A.

Figure 12A is a side elevational view of a stylus according to a sixth embodiment of the present invention.

Figure 12B is a side elevational view of a stylus in accordance with a seventh embodiment of the present invention.

FIG. 13A is a perspective view of a stylus according to an eighth embodiment of the present invention.

Figure 13B is a side elevational view of Figure 13A.

1A is a perspective view of a stylus according to a first embodiment of the present invention. 1B is a schematic cross-sectional view of the stylus of FIG. 1A. 1C is a cross-sectional view of the stylus of FIG. 1A from another perspective. Please refer to FIG. 1A to FIG. 1C at the same time. The stylus 100 includes a conductive pen 110, a circuit board 120, and an antenna 130. The material of the conductive pen 110 may be metal having a first opening 112. The circuit board 120 is disposed in the conductive pen holder 110 and has a grounding portion 122. The conductive pen holder 110 is electrically connected to the grounding portion 122. The antenna 130 is, for example, a monopole antenna (monopole The antenna 134 includes a radiating portion 132 and a feeding portion 134. The feeding portion 134 is electrically connected to the circuit board 120 and extends from the conductive sheath 110 to the outside of the conductive sheath 110 via the first opening 112. The radiating portion 132 is electrically conductive. The pen holder 110 is externally and electrically connected to the feeding portion 134.

The stylus 100 of the present embodiment can be used to operate a touch electronic device (not shown), such as a tablet computer. As shown in FIG. 1A, in the embodiment, the antenna 130 can be used as a pen holder of the stylus 100, and the user can use the antenna 130 to fix the stylus 100 in, for example, a user's pocket or any other position. In addition, the antenna 130 has a function of transmitting and receiving signals, so that the stylus 100 can receive wireless signals of the touch electronic device, such as a Bluetooth signal. It should be noted that the conductive pen 110 is electrically connected to the ground portion 122 of the circuit board 120, so that the interference of the conductive pen 110 to the antenna 130 can be reduced. In this way, in the case where the material of the pen of the stylus pen 100 is made of a conductive material such as metal according to the design requirements or other design requirements, the antenna 130 of the stylus pen 100 can still provide good signal transceiving efficiency.

Referring to FIG. 1A , in detail, the radiating portion 132 of the antenna 130 is pivotally connected to the feeding portion 134 along a rotation axis R1 such that the radiating portion 132 is rotatable relative to the feeding portion 134 . In the present embodiment, the rotation axis R1 is the central axis of the first opening 112, and in the embodiment, the first opening 112 is disposed on one side 114 of the conductive pen 110 as an example.

Figure 2 is a perspective view showing the radiant portion of Figure 1A rotated to another position. As illustrated in FIG. 2, the user can rotate the radiation portion 132 along the rotational axis R1 to move the portion of the radiation portion 132 away from the conductive sheath 110. So when the user takes the stylus 100 days When the line 130 performs signal transmission and reception, the interference of the conductive sheath 110 to the antenna 130 can be further reduced.

In addition, as shown in FIG. 1A , the stylus 100 of the present embodiment further includes an insulator 140 disposed in the first opening 112 to electrically isolate the feeding portion 134 from the conductive pen 110 to avoid the influence of the conductive pen 110 . The antenna 130 transmits and receives signals.

3A is a perspective view of a stylus according to a second embodiment of the present invention. Figure 3B is a partial side elevational view of Figure 3A. It is to be noted that the same reference numerals are used to designate the same or similar elements, and the description of the same technical content is omitted. For the description of the omitted portions, reference may be made to the foregoing embodiments, and the detailed description thereof will not be repeated here.

Referring to FIG. 3A and FIG. 3B, in the embodiment, the antenna 130a includes a radiating portion 132a and a feeding portion 134a. The radiating portion 132a is pivotally connected to the feeding portion 134a along a rotation axis R2, so that the radiating portion 132a can be relatively rotated. In the feeding portion 134a. Further, in the present embodiment, the rotation axis R2 is perpendicular to the central axis of the first opening 112. In other words, the main difference between the embodiment of Figure 3A and the embodiment of Figure 1A is that the directions of the axes of rotation are different. 4A is a perspective view showing the rotation of the radiation portion of FIG. 3A to another position. 4B is a partial side elevational view of FIG. 4A. 4A and 4B, the user can rotate the radiation portion 132a along the rotation axis R2 to move the radiation portion 132a away from the conductive sheath 110. Thus, when the user performs signal transmission and reception with the antenna 130a of the stylus pen 100a, the interference of the conductive pen holder 110 to the antenna 130a can be reduced.

FIG. 5A is a perspective view of a stylus according to a third embodiment of the present invention. Figure 5B is a schematic cross-sectional view of the antenna of Figure 5A. Figure 5A follows the components of Figure 1A The same reference numerals are used to denote the same or similar elements, and the description of the same technical content is omitted. For the description of the omitted portions, reference may be made to the foregoing embodiments, and the detailed description thereof will not be repeated here.

Referring to FIG. 5A and FIG. 5B, in the embodiment, the antenna 130b includes a radiating portion 132b and a feeding portion 134b. The radiating portion 132b is slidably disposed on the feeding portion 134b along a sliding axis S1, and the sliding axis S1 is perpendicular to the first portion. A central axis of the opening 112. In the present embodiment, the radiating portion 132b is a chute and the feeding portion 134b is a rail so that the radiating portion 132b can stably slide. Figure 6 is a perspective view showing the radiant portion of Figure 5A slid to another position. The radiation portion 132b slides along the sliding axis S1 to move the portion of the radiation portion 132b away from the conductive sheath 110. In this way, when the user performs signal transmission and reception with the antenna 130b of the stylus pen 100b, the interference of the conductive pen holder 110 to the antenna 130b can be reduced. Further, in the present embodiment, when the radiation portion 132b is located at the position shown in FIG. 5A or FIG. 6, the radiation portion 132b can be positioned by a suitable positioning structure such as a positioning bump formed on the radiation portion 132b to avoid The radiation portion 132b produces slippage in an unexpected situation.

Figure 7A is another embodiment of the antenna of Figure 1A. FIG. 7B illustrates the shortening of the length of the radiation portion of FIG. 7A. Referring to FIG. 7A and FIG. 7B simultaneously, in the present embodiment, the radiating portion 132c is a telescopic structure and is adapted to expand and contract to change the length of the radiating portion 132c. For example, the radiation portion 132c can be shortened from the state shown in FIG. 7A to the state shown in FIG. 7B. As such, the length of the radiating portion 132c of the antenna 130c can be changed to receive signals of different frequency bands, so that the antenna 130c can be used in a wider range.

8A is a perspective view of a stylus according to a fourth embodiment of the present invention. Figure. 8B is a schematic cross-sectional view of the stylus of FIG. 8A. Figure 8C is a cross-sectional view of the stylus of Figure 8A in another perspective. Referring to FIG. 8A to FIG. 8C simultaneously, the stylus 200 includes a conductive pen 210, a circuit board 220, and an antenna 230. The material of the conductive pen 210 may be metal having a first opening 212. The circuit board 220 is disposed in the conductive pen holder 210 and has a grounding portion 222. The conductive pen holder 210 is electrically connected to the grounding portion 222.

In this embodiment, the antenna 230 is, for example, a Planar Inverted F Antenna (PIFA), and includes a radiating portion 232, a feeding portion 234, and a grounding portion 236. The feeding portion 234 is connected to the circuit board 220 and extends from the conductive pen holder 210 to the outside of the conductive pen holder 210 via the first opening 212. The radiating portion 232 is disposed outside the conductive pen holder 210 and electrically connected to the feeding portion 234. The grounding section 236 is electrically connected to the radiating part 232 and grounded to the grounding part 222 .

As shown in FIG. 8B, in detail, in this embodiment, the grounding segment 236 is in contact with the conductive pen holder 210, and the conductive pen holder 210 is electrically connected to the grounding portion 222 of the circuit board 220, so that the grounding segment 236 passes through the conductive pen holder. 210 is grounded to the ground portion 222. In this embodiment, by electrically connecting the conductive pen 210 to the ground portion 222 of the circuit board 220, the interference of the conductive pen 210 to the antenna 230 can be reduced, so that the antenna 230 can provide good signal transceiving efficiency.

In addition, in the present embodiment, the radiation portion 232 is connected to the feeding portion 234 and the grounding portion 236 in a similar manner to the embodiment of FIG. 5A, and is in a sliding manner. As shown in FIG. 8A, in the embodiment, the radiating portion 232 is slidably disposed on the feeding portion 234 and the grounding portion 236 along a sliding axis S2, and the sliding axis S2 is perpendicular to the first opening 212. The central axis, as such, the radiating portion 232 can slide relative to the feed portion 234 and the ground portion 236 along the sliding axis S2.

Figure 9 is a perspective view showing the radiant portion of Figure 8A slid to another position. The radiating portion 232 slides along the sliding axis S2 to move the portion of the radiating portion 232 away from the conductive sheath 210. In this way, when the user performs signal transmission and reception with the antenna 230 of the stylus pen 200, the interference of the conductive pen holder 210 to the antenna 230 can be reduced. In addition, in the present embodiment, when the radiation portion 232 is located at the position shown in FIG. 8A or FIG. 9, the radiation portion 232 can be positioned by a suitable positioning structure (such as a positioning bump formed on the radiation portion 232) to avoid radiation. Port 232 produces a slip in an unexpected situation.

FIG. 10A is a perspective view of a stylus according to a fifth embodiment of the present invention. Figure 10B is a side elevational view of Figure 10A. The same reference numerals are used to designate the same or similar elements, and the description of the same technical content is omitted. For the description of the omitted portions, reference may be made to the foregoing embodiments, and the detailed description thereof will not be repeated here.

Referring to FIG. 10A and FIG. 10B, in the embodiment, the antenna 230a of the stylus 200a is, for example, a planar inverted-F antenna, which includes a radiating portion 232a, a feeding portion 234a, and a grounding portion 236a. The difference between this embodiment and the embodiment of FIG. 8A is mainly that in the embodiment of FIG. 10A, the feeding portion 234a and the grounding portion 236a are both telescopic structures and are adapted to be telescopic to change the distance between the radiating portion 232a and the conductive sheath 210. .

Figure 11A is a perspective view showing the feeding portion and the grounding portion of Figure 10A as they are elongated. Figure 11B is a side elevational view of Figure 11A. Please refer to FIG. 11A and FIG. 11B at the same time. After the feeding portion 234a and the grounding portion 236a are elongated, the distance h1 between the radiating portion 232a and the conductive sheath 210 (as shown in FIG. 10B) is increased to the distance h2 shown in FIG. 11B, so that the radiating portion 232a and the conductive sheath 210 are disposed. There is a larger spacing to further reduce the interference of the conductive sheath 210 to the antenna 230a. In the present embodiment, the distance h2 is designed to be greater than 4 mm, for example, but the present invention is not limited thereto. In other embodiments, the distance h2 may be other suitable lengths.

Figure 12A is a side elevational view of a stylus according to a sixth embodiment of the present invention. In the stylus 200b of FIG. 12A, an equivalent capacitance is formed between the radiating portion 232b and the conductive sheath 210b to adjust the impedance matching of the antenna 230b, and the transmitting and receiving efficiency of the antenna 230b is improved. In the present embodiment, the equivalent capacitance is formed by using air between the radiating portion 232b and the conductive pen 210b as a medium, but the present invention is not limited thereto, and is exemplified below.

Figure 12B is a side elevational view of a stylus in accordance with a seventh embodiment of the present invention. Referring to FIG. 12B, in the embodiment, the end of the radiating portion 232c includes a bump 240, and the bump 240 is located between the radiating portion 232c and the conductive pen 210c. The bump 240 may be made of a non-conductor material. The equivalent capacitance is formed between the radiation portion 232c and the conductive sheath 210c by using the bump 240 and the air as a medium. In detail, the thickness or width of the bump 240 can be adjusted to change the value of the equivalent capacitance, thereby adjusting the antenna 230c. The impedance matching improves the transmission and reception efficiency of the antenna 230c. In addition, the antenna 230c of the embodiment can be used as a pen holder of the stylus pen 200c, and the bump 240 can be used as a fastening portion at the end of the pen holder. When the user fixes the stylus pen 200c at an arbitrary position by using the antenna 230c, The fastening portion has the function of strengthening the fixing effect.

FIG. 13A is a perspective view of a stylus according to an eighth embodiment of the present invention. Figure 13B is a side elevational view of Figure 13A. The embodiment of Figure 13A is substantially similar to the embodiment of Figure 8A, the difference being primarily due to the form in which the antenna is grounded. Referring to FIG. 13A and FIG. 13B simultaneously, in the embodiment, the antenna 330 is, for example, a Planar Inverted F Antenna (PIFA), which includes a radiating portion 332, a feeding portion 334, and a grounding portion 336. The conductive pen holder 310 has a first opening 312 and a second opening 314. The feeding portion 334 extends from the conductive pen holder 310 through the first opening 312 to the outside of the conductive pen holder 310, and the grounding portion 336 passes through the second opening 314. The conductive pen holder 310 extends into the conductive pen holder 310 to be connected to the ground portion 322 of the circuit board 320, which can reduce the interference of the conductive pen holder 310 to the antenna 330, so that the antenna 330 can provide good signal transceiving efficiency.

It should be noted that the feeding portion 334 and the grounding portion 336 of the stylus pen 300 of FIG. 13A may be a telescopic structure and are adapted to expand and contract to change the distance between the radiating portion 332 and the conductive pen holder 310. For the description of this part, reference may be made to the embodiment of FIG. 10A and FIG. 10B, and details are not described herein again.

In summary, the conductive pen of the stylus of the present invention is grounded to the grounding portion of the circuit board to reduce the interference caused by the conductive pen to the antenna of the stylus. Therefore, in the case where the material of the stylus pen is made of a conductive material such as metal according to the design requirements or other design requirements, the antenna can still have good signal transmission and reception efficiency. In addition, the radiating portion of the antenna can be designed to be movable relative to the conductive pen (such as rotating or sliding) to enable the radiating portion to be away from the conductive pen to further reduce the interference of the electric pen to the antenna of the stylus.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

100‧‧‧ stylus

110‧‧‧Electrical pen

112‧‧‧First opening

120‧‧‧ boards

122‧‧‧ Grounding Department

130‧‧‧Antenna

132‧‧‧ Radiation Department

134‧‧‧Feeding Department

Claims (15)

A stylus comprising: a conductive stylus having a first opening; a circuit board disposed in the conductive stylus; and the circuit board having a grounding portion, wherein the conductive stylus is electrically connected to the grounding portion; And an antenna, comprising a radiating portion and a feeding portion, wherein the feeding portion is electrically connected to the circuit board and extends from the conductive pen to the outside of the conductive pen via the first opening, the radiating portion is located at the conductive pen Externally and electrically connected to the feeding portion. The stylus of claim 1, wherein the radiant portion is pivotally coupled to the feed portion along an axis of rotation, the radiant portion being adapted to rotate along the axis of rotation to move a portion of the radiant portion away from the conductive stylus. The stylus of claim 2, wherein the axis of rotation is a central axis of the first opening. The stylus of claim 2, wherein the axis of rotation is perpendicular to a central axis of the first opening. The stylus of claim 1, wherein the radiant portion is slidably disposed along the sliding axis along the sliding axis, and the radiating portion is adapted to slide along the sliding axis to move a portion of the radiant portion away from the conductive stylus. The stylus of claim 5, wherein the sliding axis is perpendicular to a central axis of the first opening. The stylus of claim 1, wherein the antenna further comprises a grounding segment electrically connected to the radiating portion and grounded to the grounding portion. The stylus according to claim 7, wherein the grounding segment is grounded to the grounding portion through the conductive pen. The stylus of claim 7, wherein the conductive stylus has a second opening, and the grounding portion extends from the conductive stylus to the conductive stylus via the second opening to be electrically connected. At the grounding portion. The stylus according to claim 7, wherein the radiant portion is slidably disposed along the sliding axis on the feeding portion and the grounding portion, and the radiating portion is adapted to slide along the sliding axis to keep a portion of the radiating portion away from The conductive pen holder. The stylus of claim 10, wherein the sliding axis is perpendicular to a central axis of the first opening. The stylus according to claim 7, wherein the feeding portion and the grounding portion are both telescopic structures and adapted to expand and contract to change a distance between the radiating portion and the conductive sheath. The stylus according to claim 1, wherein the radiation portion is a telescopic structure and is adapted to expand and contract to change the length of the radiation portion. The stylus of claim 1, further comprising an insulator disposed in the first opening to electrically isolate the feeding portion from the conductive sheath. The stylus according to claim 1, wherein an equivalent capacitance is formed between the radiating portion and the conductive sheath.