TWI445245B - Mobile device - Google Patents

Description

Mobile device

The present invention relates to a mobile device, and more particularly to a mobile device having a stylus.

At present, the communication mode of the public has gradually changed to wireless communication, and wireless communication devices are becoming more and more diversified, such as PDA mobile phones, smart mobile phones, satellite navigation devices or personal digital assistants. Electronic devices with wireless transmission functions have also been developed in a light, thin and short design concept to achieve electronic products that are more suitable for daily use.

In general, electronic devices with communication or wireless transmission functions are usually equipped with an antenna to receive and receive RF signals. In addition, the electronic device can utilize a liquid crystal screen with a touch panel function as an input interface and a display interface. The touch panel function of the LCD screen can be combined with the stylus to select the function items (such as the user interface) displayed on the LCD screen to perform various built-in functions of the personal digital assistant. That is to say, the user can not only directly click the button on the touch panel, but even the input of the text is directly written on the touch panel.

Based on the above, as the functions of electronic devices become more diverse, a variety of corresponding components (such as an antenna and a stylus) must be simultaneously disposed thereon to facilitate the use of various functions. In terms of an antenna, in order to achieve sufficient transmission and reception, an antenna disposed inside or outside the electronic device may occupy a certain space or area. In the case of a stylus, the volume cannot be too small for the user to grasp easily. However, the size and accommodation space of the electronic device itself is limited, and excessive components may cause difficulty in its configuration and may limit the design of its structure or shape.

Although the technology of integrating the stylus and the antenna into one can solve the above problems, the current hand-held mobile devices tend to use metal frames. When combined with the metal frame and the integrated stylus, the RF signal transmission and reception capability of the mobile device is seriously reduced by the interference of the destructive resonance frequency of the metal frame and the stylus metal material.

The invention provides a mobile device, which utilizes an insulating member to block the electrical connection between the rod of the stylus and the antenna, and connects the rod body of the stylus to the grounding surface of the system, thereby effectively reducing the damage of the rod to the antenna. The effect of the resonant frequency improves the quality of the RF signal transmitted and received by the antenna.

The invention provides a mobile device comprising a stylus. The stylus is adapted to be inserted into the mobile device, and the stylus includes a pen and an antenna. The pen holder includes a rod body, an insulating member and a conductive member. The insulating member is used to block the electrical connection between the rod body and the conductive member. The antenna is disposed inside the sheath and telescopically extends to the outside of the sheath. Wherein, when the stylus is inserted into the mobile device, the antenna can be extended to the outside of the pen holder and electrically connected to the conductive member to feed an RF signal into the mobile device.

In an embodiment of the invention, the mobile device further includes a substrate, a wireless transceiver, and a first connector. The substrate is opposite to the metal frame described above, and the wireless transceiver is disposed on the substrate. The first connector is disposed on the substrate and electrically connected to the wireless transceiver. Wherein, when the stylus is inserted into the mobile device, the first connecting member is used to bear the conductive member, so that the antenna transmits the RF signal to the wireless transceiver through the conductive member and the first connecting member.

In an embodiment of the invention, the rod body is made of a conductive material, and the mobile device further includes a system grounding surface and a second connecting member. The system ground plane is disposed on the substrate. The second connector is disposed on the substrate and electrically connected to the system ground plane. Wherein, when the stylus is inserted into the mobile device, the second connecting member is used to abut the end of the rod body, so that the rod body is electrically connected to the system grounding surface.

In an embodiment of the present invention, each of the two sides of the insulating member has a first fitting portion, and the rod body and the conductive member each have a second fitting portion, and the first fitting portion is adapted to The second fitting portions are fitted to each other such that the insulating member is fixed between the rod body and the conductive member.

In an embodiment of the invention, the rod body is connected to the insulating member, and the conductive member is partially or completely embedded in the insulating member.

In an embodiment of the invention, the metal frame is disposed on the mobile device. When the stylus is inserted into the mobile device, the stylus is completely covered by the metal frame, and the metal frame is opposite to the substrate. And electrically connected to the system ground plane.

Based on the above, the present invention utilizes an insulating member to block the electrical connection between the rod of the stylus and the antenna to reduce the influence of the antenna on the destructive resonant frequency of the rod. In addition, the present invention connects one end of the stylus stem to the system ground plane to further reduce the antenna from being affected by the destructive resonant frequency of the shank. Therefore, compared with the prior art, the mobile device of the present invention has the advantages of compact volume of the integrated stylus and has improved reception quality of the radio frequency signal.

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

1A is a schematic diagram of a stylus pen not inserted into a mobile device according to an embodiment of the present invention, and FIG. 1B is a schematic diagram of the stylus pen inserted in the mobile device according to an embodiment of the invention. 1A and 1B, the mobile device 10 includes a stylus 11 and a metal frame 12. As shown in FIG. 1B, the metal frame 12 is disposed on a housing (not shown) of the mobile device 10. When the stylus 11 is adapted to be inserted into the mobile device 10, and when the stylus 11 is inserted into the mobile device When the inside of 10 is inside, the stylus pen 11 is completely covered by the metal frame 12. In addition, the stylus 11 includes a pen 110 and an antenna 120. Furthermore, the pen holder 110 includes a rod body 111, an insulating member 112 and a conductive member 113. The insulating member 112 is used to block the electrical connection between the rod body 111 and the conductive member 113.

The antenna 120 is disposed inside the sheath 110, and the antenna 120 can be stretched and stretched to the outside of the sheath 110. It is worth mentioning that the antenna 120 extended to the outside of the sheath 110 is electrically connected to the conductive member 113, and the insulating member 112 blocks the electrical connection between the rod 111 and the conductive member 113, so that the insulating member 112 can be further blocked. Electrical connection between the rod body 111 and the antenna 120. In an actual application, FIG. 1C is another schematic diagram of a stylus inserted in a mobile device according to an embodiment of the present invention. As shown in FIG. 1C, when the stylus 11 is inserted inside the mobile device 10, the antenna 120 can be The drawing is telescopically extended to the outside of the sheath 110 to receive or transmit an RF signal. In addition, when the stylus 11 is inserted inside the mobile device 10, the antenna 120 extending outside the sheath 110 can feed the RF signal into the mobile device 10 through the conductive member 113.

It is worth mentioning that the RF signal transmitted and received by the antenna 120 can be, for example, Digital Video Broadcasting-Terrestrial (DVB-T), Digital Video Broadcasting-Handheld (DVB-H), integrated service. Signals of Integrated Services Digital Broadcasting-Terrestrial (ISDB-T) or Chinese Mobile Multimedia Broadcasting (CMMB), so that the mobile device 10 has the function of watching digital video and listening to digital broadcasting. In addition, the operating frequency band of the antenna 120 can be 470 MHz to 860 MHz to meet the above requirements for transmitting and receiving RF signals.

1A and FIG. 1B , the mobile device 10 further includes a substrate 130 , a wireless transceiver 140 , a first connector 150 , a system ground plane 160 , and a second connector 170 . The substrate 130 is opposite to the metal frame 12, and the wireless transceiver 140, the first connector 150, the second connector 170, and the system ground plane 160 are disposed on the substrate 12. In addition, the metal frame 12 is also electrically connected to the system ground plane 160 , and the first connector 150 is electrically connected to the wireless transceiver 140 . Referring to FIG. 1B, when the stylus 11 is inserted inside the mobile device 10, the conductive member 113 and the first connecting member 150 at least partially overlap on a vertical projection surface. In addition, the first connecting member 150 is used for supporting the conductive member 113 and electrically connecting the conductive member 113 and the wireless transceiver 140. Thereby, the antenna 120 transmits the radio frequency signal to the wireless transceiver 140 through the conductive member 113 and the first connecting member 150. For example, the first connecting member 150 may be composed of a metal dome or a ejector pin.

In the embodiment, the material of the rod body 111 is a conductive material. The second connector 170 is electrically connected to the system ground plane 160. In addition, in the physical configuration, when the stylus pen 11 is inserted into the inside of the mobile device 10, the end of the rod body 111 and the second connecting member 170 at least partially overlap on the vertical projection surface. In addition, the second connecting member 170 is used to abut against the end of the rod 111. Thereby, the end of the rod body 111 will be electrically connected to the system ground plane 160 through the second connecting member 170. For example, the second connecting member 170 may be composed of a metal dome or a ejector pin.

2A is a diagram showing the standing wave ratio of the antenna when the rod is coupled to the antenna, and FIG. 2B is a diagram showing the standing wave ratio of the antenna when the rod is insulated from the antenna. As can be seen by comparing FIG. 2A with FIG. 2B, when the stylus 11 has the insulating member 112 to isolate the rod body 111 and the antenna 120, and the metal frame 12 is electrically connected to the system ground plane 160, the bandwidth of the antenna 120 is The interference from the destructive resonant frequency of the rod 111 is relatively reduced so much that the overall RF signal reception of the antenna 120 is better. In this way, the mobile device retains the advantages of the compact size of the integrated stylus (ie, the stylus 11) and the improved RF signal reception quality.

In addition to blocking the rod body 111 and the antenna 120 by the insulating member 112, the rod body 111 can also be connected to the system ground plane 160 through the second connecting member 170 to further reduce the influence of the rod body 111 on the destructive resonance frequency of the antenna 120. FIG. 3A is a diagram showing the standing wave ratio of the antenna when the rod of the stylus is grounded, and FIG. 3B is a diagram showing the standing wave ratio of the antenna 130 when the rod of the stylus is not grounded. As can be seen by comparing FIG. 3A with FIG. 3B, when the rod 111 of the stylus 11 is grounded and the metal frame 12 is electrically connected to the system ground plane 160, the bandwidth of the antenna 120 is destructively resonated by the rod 111. The frequency interference is relatively reduced so much that the overall RF signal reception of the antenna 120 is better.

After the relative relationship and the connection relationship of the constituent elements of the mobile device 10 are described, the detailed structure of the stylus pen 11 will be further described below with reference to FIGS. 4A and 4B.

4A is a schematic structural view of a stylus according to an embodiment of the present invention, and FIG. 4B is an external structural diagram of a stylus according to an embodiment of the present invention. Referring to FIG. 4A, the antenna 120 includes a rotating shaft 121 and a telescopic structure 122. The antenna 120 can be extended and contracted by the telescopic mechanism 122, and the antenna 120 can also be extended to the outside of the sheath 110 by the stretching action of the telescopic mechanism 122. In this way, the degree of receiving gain of the RF signal of the antenna 120 can be enhanced. When the antenna 120 is extended to the outside of the sheath 110, the antenna 120 can be further bent relative to the sheath 110 through the rotating shaft 120, so that the user adjusts the angle of the antenna 120 to obtain a better RF signal receiving effect. Referring to FIG. 4B, the telescopic mechanism 122 of the antenna 120 has at least three or more telescopic structures. It should be noted that the present invention is not limited to the above, and in other exemplary embodiments, according to the actual requirements of the radio frequency signal receiving quality, the telescopic mechanism 122 may also be a telescopic structure of four or five sections or the like.

After the detailed structure of the antenna 120 is introduced, the detailed connection structure between the rod 111, the insulating member 112 and the conductive member 113 will be further described below with reference to FIGS. 5A and 5B.

Fig. 5A is a partial cross-sectional view showing a pen holder according to an embodiment of the present invention. Referring to FIG. 5A, in the embodiment, each side of the insulating member 112 has a first fitting portion 510, and the rod body 111 and the conductive member 113 each have a second fitting portion 520. The second fitting portions 520 of the rod body 111 and the conductive member 113 respectively correspond to the first fitting portions 510 on both sides of the insulating member 112. Further, in the embodiment, the first fitting portion 510 on both sides of the insulating member 112 is a groove. On the other hand, the second fitting portion 520 of the rod body 111 and the conductive member 113 is a bump. In this way, the first fitting portion 510 is adapted to be engaged with the corresponding adjacent second fitting portion 520 such that the insulating member 112 is fixed between the rod body 111 and the conductive member 113.

Figure 5B is a partial cross-sectional view of a pen holder in accordance with another embodiment of the present invention. Referring to FIG. 5B, in the present embodiment, similar to FIG. 5A, both sides of the insulating member 112 have a first fitting portion 510', and the rod body 111 and the conductive member 113 each have a second fitting portion 520'. . The second fitting portions 520' of the rod body 111 and the conductive member 113 respectively correspond to the first fitting portions 510' on both sides of the insulating member 112. Further, in the present embodiment, the first fitting portion 510' on both sides of the insulating member 112 is a bump. On the other hand, the rod body 111 and the second fitting portion 520' of the conductive member 113 are respectively a groove. In this way, the first fitting portion 510' is adapted to be fitted to the corresponding adjacent second fitting portion 520' such that the insulating member 112 is fixed between the rod body 111 and the conductive member 113.

6A is a perspective view showing the structure of a stylus according to an embodiment of the present invention. Referring to FIG. 6A, in the present embodiment, the conductive member 113 can cover the antenna 120 and the insulating member 112 at the same time. Furthermore, the rod body 111 is connected to the insulating member 112, and the conductive member 113 is partially embedded in the insulating member 112. In this way, the conductive member 113 is electrically connected to the antenna 120, so that the antenna 120 can transmit the RF signal to the wireless transceiver 140 through the conductive member 113. At the same time, the insulating member 112 still blocks the electrical connection between the conductive member 113 and the rod 111 to reduce the influence of the rod 111 on the destructive resonance frequency of the antenna 120.

6B is a perspective view showing the structure of a stylus according to another embodiment of the present invention. Referring to FIG. 6B, in the present embodiment, the conductive members 113 are all buried in the insulating member 112. However, the conductive member 113 is still connected to the antenna 120, so that the antenna 120 can transmit the radio frequency signal to the wireless transceiver 140 through the conductive member 113. At the same time, the insulating member 112 still blocks the connection of the conductive member 113 and the rod 111 to reduce the influence of the rod 111 on the destructive resonance frequency of the antenna 120.

In summary, the stylus of the present invention utilizes an insulating member to block the electrical connection between the rod body and the antenna, and the metal frame is also electrically connected to the system ground plane. Thereby, the antenna can be reduced by the destructive resonance frequency of the rod body and the metal frame. In addition, the present invention connects one end of the stylus stem to the system ground plane to further reduce the antenna from being affected by the destructive resonant frequency of the shank. In this way, the mobile device will have the advantages of the compact size of the integrated stylus and improve the reception quality of the RF signal.

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

10. . . Mobile device

11. . . Stylus

12. . . Metal frame

110. . . pen

111. . . Rod body

112. . . Insulation

113. . . Conductive part

120. . . antenna

121. . . Rotating shaft

122. . . Telescopic structure

130. . . Substrate

140. . . Wireless transceiver

150. . . First connector

160. . . System ground plane

170. . . Second connector

510, 510’. . . First fitting

520, 520’. . . Second fitting part

FIG. 1A is a schematic diagram of a stylus pen not inserted in a mobile device according to an embodiment of the invention.

FIG. 1B is a schematic diagram of a stylus inserted into a mobile device according to an embodiment of the invention.

FIG. 1C is another schematic diagram of a stylus inserted into a mobile device according to an embodiment of the invention.

2A is a diagram showing the standing wave ratio of the antenna when the rod is coupled to the antenna.

Fig. 2B is a diagram showing the standing wave ratio of the antenna when the rod is insulated from the antenna.

FIG. 3A is a diagram showing the standing wave ratio of the antenna when the rod of the stylus is grounded.

FIG. 3B is a diagram showing the standing wave ratio of the antenna when the rod of the stylus is not grounded.

4A is a schematic structural view of a stylus according to an embodiment of the invention.

FIG. 4B is a structural diagram of the appearance of a stylus according to an embodiment of the invention.

Fig. 5A is a partial cross-sectional view showing a pen holder according to an embodiment of the present invention.

Figure 5B is a partial cross-sectional view of a pen holder in accordance with another embodiment of the present invention.

6A is a perspective view showing the structure of a stylus according to an embodiment of the present invention.

6B is a perspective view showing the structure of a stylus according to another embodiment of the present invention.

10. . . Mobile device

11. . . Stylus

12. . . Metal frame

110. . . pen

111. . . Rod body

112. . . Insulation

113. . . Conductive part

120. . . antenna

130. . . Substrate

140. . . Wireless transceiver

150. . . First connector

160. . . System ground plane

170. . . Second connector

Claims (12)

A mobile device comprising: a stylus adapted to be inserted into the mobile device, and comprising: a rod comprising a rod body, an insulating member and a conductive member, wherein the insulating member is for blocking the rod body An electrical connection with the conductive member; and an antenna disposed inside the sheath and telescopically extending to the outside of the sheath, wherein the antenna is inserted into the mobile device The device can be extended to the outside of the pen holder and electrically connected to the conductive member to feed an RF signal into the mobile device. The mobile device of claim 1, further comprising: a substrate; a wireless transceiver disposed on the substrate; and a first connecting component disposed on the substrate and electrically connected to the wireless transceiver The first connecting member is configured to bear against the conductive member when the stylus is inserted into the mobile device, so that the antenna transmits the RF signal through the conductive member and the first connecting member To the wireless transceiver. The mobile device of claim 2, wherein the rod body is made of a conductive material, and the mobile device further comprises: a system grounding surface disposed on the substrate; a second connecting member disposed on the The grounding surface of the system is electrically connected to the grounding surface of the system, wherein when the stylus is inserted into the mobile device, the second connecting member is used to bear against the end of the rod body, so that the rod body is electrically Connect to the ground plane of the system. The mobile device of claim 3, wherein the first connecting member and the second connecting member are respectively formed by a metal dome or a ejector pin. The mobile device of claim 1, wherein the rod body is made of a non-conductive material. The mobile device of claim 1, wherein the rod body is made of a conductive material. The mobile device of claim 1, wherein the antenna comprises a telescopic structure and a rotating shaft, the antenna is extended and contracted by the telescopic mechanism, and the antenna extending outside the pen is transmitted through the rotating shaft And bent relative to the pen. The mobile device of claim 1, wherein each of the two sides of the insulating member has a first engaging portion, the rod and the conductive member each have a second engaging portion, and the first embedded portion The fitting portion is adapted to be engaged with the second fitting portion such that the insulating member is fixed between the rod body and the conductive member. The mobile device of claim 8, wherein the first fitting portion is a groove, and the second fitting portion is a bump. The mobile device of claim 8, wherein the first fitting portion is a bump, and the second fitting portion is a groove. The mobile device of claim 1, wherein the rod body is connected to the insulating member, and the conductive member is partially or completely embedded in the insulating member. The mobile device of claim 3, wherein the mobile device further comprises: a metal frame disposed on the mobile device, the stylus is inserted when the stylus is inserted inside the mobile device The metal frame is completely covered by the metal frame, and the metal frame is electrically connected to the ground plane of the system.