JP3131183B2 - Mobile phone - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an incoming call display technology for a portable telephone, and more particularly, to a portable telephone in which an incoming call is notified by radio waves to a radio call alerting device (incoming call display portable receiver) which is provided separately when an incoming call is detected. Phone related.

[0002]

2. Description of the Related Art There is a portable telephone system comprising a portable telephone body and a portable radio alerting device for notifying an incoming call by vibration or the like separately provided.

In order for the separate radio call alerting device to individually identify a call from the radio base station to its own terminal, when the portable telephone body detects an incoming signal to its own terminal, it uses a dedicated transmitting antenna to transmit radio signals. The call notification device must be notified of the incoming call wirelessly. The radio alerting device must have a built-in receiving antenna, and receive radio waves from the mobile phone body to notify the incoming call by vibration or the like.

[0004]

However, a mobile phone often comprises a diversity antenna composed of a rod-shaped antenna projecting upward and a planar antenna internally provided on the rear side. Little space is left in the phone to place new antennas.

[0005]

According to a first aspect of the present invention, there is provided a first antenna protruding from the inside of a housing, and a second antenna provided on a rear side of the housing. And a mobile phone that transmits and receives radio waves to and from a radio base station connected to a telephone network by using both antennas to form a diversity antenna. Control means for outputting predetermined individual identification information for displaying an incoming call when a call signal from the wireless base station is detected; a weak radio wave transmitting unit for wirelessly transmitting the individual identification information by a weak radio wave; A loop antenna connected to a radio wave transmitting unit, the antenna including a third antenna disposed in a housing avoiding the first and second antenna arrangement portions; And to notify an incoming call by vibration or the like by receiving the individual identification information wirelessly transmitted from the third antenna to a portable receiver for incoming display is separately.

According to a second aspect of the present invention, in the first aspect of the present invention, the third antenna is further provided inside the housing by avoiding a portion where a metal film for electromagnetic shielding is formed on the inner wall of the housing. It was arranged.

According to a third aspect of the present invention, in the first aspect of the invention, the third antenna is arranged so as to be routed around a component.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the third antenna is a flexible printed circuit board formed in advance in a shape suitable for surrounding parts.

[0009]

FIG. 1 shows a basic structure of a third antenna for displaying an incoming call according to an embodiment of the present invention. In FIG. 1A, reference numeral 5 denotes a flexible printed circuit board antenna (hereinafter referred to as a flexible antenna) in which a radiating element (loop antenna) is formed by using electrolytic copper foil on polyimide. 5a is a linear radiating element having an antenna length L which operates at a predetermined frequency and is formed of electrolytic copper foil on polyimide. Reference numeral 5b denotes a feeding end of the flexible antenna 5. As shown in FIG. 3B, copper foil 5a is formed on the upper and lower layers of polyimide 5c.
Is sandwiched. An adhesive 5d is provided on the side of the flexible antenna 5 to facilitate fixing in the mobile phone.

FIG. 2 shows a liquid crystal module unit incorporated in a portable telephone according to an embodiment of the present invention. FIG. 2A shows a liquid crystal module unit having a flexible antenna attached thereto, and FIG. FIG. 3C is a diagram showing a state where the liquid crystal module unit is separated from the liquid crystal module unit, and FIG.

Each symbol in FIG. 2 will be described. Reference numeral 1 denotes a liquid crystal module unit mount. Reference numeral 2 denotes a flexible printed circuit (FPC) that mainly forms a liquid crystal driving circuit. Reference numeral 3 denotes a connector insertion portion for connecting one end of the FPC 2 to a main board described later. Reference numeral 4 denotes a liquid crystal display surface mounted on the mount 1. Reference numeral 5 denotes a flexible antenna (an incoming call display antenna) in which a radiating element is formed by using an electrolytic copper foil on polyimide, and is attached to the mount 1 so as to surround the liquid crystal display surface 4 with an adhesive on the back surface. 5a is a linear radiating element having an antenna length L which operates at a predetermined frequency and is formed of electrolytic copper foil on polyimide. Reference numeral 5b denotes a power supply end of the flexible antenna 5, which is soldered to a main board described later. As shown in FIG. 2B, the flexible antenna 5 has a hole 5c for positioning when mounting on the mount 1, and the protrusion 1a of the mount 1 is inserted into the polyimide. The flexible antenna 5 has a portion 5d in which a part of the polyimide extends in a band shape from both sides, and when the flexible antenna 5 is attached to the mount 1, as shown in FIG. To prevent the flexible antenna 5 from sticking up from the mount 1. SP denotes a speaker, which is incorporated in the liquid crystal module unit in order to facilitate assembly of the mobile phone.

FIG. 3 shows an embodiment of the present invention and is a view for explaining the attachment of the main board and the liquid crystal module unit. Reference numeral 6 denotes a main board, 6a denotes a keypad contact surface, and 7 denotes a circuit unit. The main board 6 has circuit units 7 such as a logic circuit unit, a high-frequency wireless circuit unit, and a power supply circuit unit, and a planar antenna, which is a second antenna, is mounted on the circuit unit 7 side. When attaching the liquid crystal module unit to the main board 6, the connector insertion section described above is inserted, and the feed end 5 of the flexible antenna 5 is inserted.
b is turned to the back side in the direction of the arrow and connected to the high-frequency wireless circuit of the circuit unit 7 by soldering.

FIG. 4 is a view showing a final assembling step of a mobile phone according to an embodiment of the present invention. Reference numeral 8 denotes a rear case (rear housing) of the mobile phone, 9 denotes an antenna housing,
Reference numeral 10 denotes a microphone, 11 denotes a front case (front case), and 11a denotes a display window. FIG. 4 shows the rear case 8 in which the first and second antennas and the main board 6 including the liquid crystal module unit are assembled, and the front case 1
The mobile phone is completed by mounting the front case 11 on the rear case 8 in the direction of the arrow. In this way, the front case 11 and the rear case 8 are combined to form a main appearance of the mobile phone.

In the present embodiment, when a call is received, the flexible antenna 5 activates an incoming call radio transmission unit (weak radio wave transmission unit) in a radio circuit unit by a control means in a logic circuit (not shown) and transmits a predetermined call signal to a separate unit. This is a means for transmitting to the wireless call notification device. The incoming call is pulled out from the first antenna in the antenna housing 9, the fixed helical antenna (an antenna that is operated only when the rod-shaped antenna is housed inside the mobile phone from the antenna housing 9 and is not operating) and the antenna housing 9. The antenna is received by a diversity antenna constituted by a rod-shaped antenna (an antenna which is capacitively coupled to a fixed helical antenna in the storage unit 9 when pulled out and operates integrally) and a planar antenna (second antenna) built in the upper part of the rear case 8. Therefore, it was difficult to secure a new antenna storage space outside the storage space for these antennas and so as not to affect the electromagnetic shield. By mounting the thin flexible antenna 5 directly on the liquid crystal module unit using the periphery of the liquid crystal display surface 4 as an antenna storage space, the problem of the storage space can be solved and the assembly is easy. In addition, since a relatively long distance can be obtained around the liquid crystal display surface, the degree of freedom in antenna design is high. Further, in a general mobile phone, the liquid crystal display surface 4 is on the same front side as the microphone / speaker, and the radio wave is shielded by the human head during a call, so that it is difficult to arrange a call antenna on the front side. As described above, the incoming call display antenna transmits a radio wave to a separate radio alerting device before the start of a call, so that it can be implemented without significantly improving a conventional mobile phone.

FIG. 5 shows a second embodiment of the present invention, and is a top view of a flexible antenna 5 constituting a third antenna.
A loop antenna having an antenna length L is formed by the electrolytic copper foil 5a included between the two. The portion indicated by c is a fitting hole for attaching to a positioning boss provided on the inner wall of the housing of the mobile phone. The flexible antenna 5 is a dedicated transmitting antenna for notifying an incoming call notification device (not shown) separate from the mobile phone main body that there is an incoming call to the mobile phone.

FIG. 6 shows a second embodiment of the present invention, and is an inner view of a front case 11 of a portable telephone, wherein a hatched portion indicates a portion where metal deposition for shielding is not performed, and a hatched portion. Other than the above, copper-Ni plating is applied. 9 is a first antenna 1 for communicating with a wireless base station
Reference numeral 7 denotes an upper portion of the telephone for disposing the mobile phone 7, and reference numeral f denotes an operation unit for mounting the flexible antenna 5 in FIG.

FIG. 7 is a front view of a portable telephone showing a second embodiment of the present invention. As shown by a two-dot chain line, the flexible antenna 5 of FIG. 5 is arranged between key switches.

FIG. 8 is an exploded perspective view of a mobile phone according to a second embodiment of the present invention. The flexible antenna 5 is adhered to the inner operation portion f of the front case 11 by bonding. The flexible antenna 5 is positioned by fitting the fitting hole c into the positioning boss e. From above the flexible antenna 5,
One rubber sheet g on which key tops such as a numeric keypad, a call key, an end key, and a function key arranged on the operation unit are integrally formed is placed. A polydome switch h, on which the key top is pressed and comes into contact with the switch, is mounted thereon. FIG. 9 shows an assembled state in which the polydome switch 6 is mounted. Further on that,
A main board 6 which forms various telephone circuits, such as a high-frequency radio section built in a shield case, is mounted. The portions indicated by a 'and b' on the main board 6 are solder lands for soldering the feeding ends a and b of the flexible antenna 5, respectively.

FIG. 10 shows that the power supply terminals a and b are connected to solder lands a ',
It is principal part sectional drawing which shows the mode soldered to b '. FIG.
As shown in the figure, the feeding ends a and b of the flexible antenna 5 are in a state of protruding outside from the front case 11, and are turned inward to form the solder lands a ′ and b ′ of the main board 6.
Is soldered with solder i. Therefore, the transmission antenna can be built in the housing covered with the electromagnetic shield. In addition, by forming the antenna with a loop-shaped flexible printed circuit board, the antenna can be easily routed in a small space that is small and open in the housing, so that a certain antenna length L can be secured.

FIG. 11 shows an embodiment of the present invention and is a partial block diagram of a portable telephone. In the figure, 12 is a CPU for controlling the entire mobile phone, 13 is a signal processing unit, 14 is a high-frequency wireless circuit unit, 15 is an audio processing unit, 16
Is a ringer, SP is a speaker, and MIC is a microphone. Reference numeral 17 denotes a first antenna formed of a set of a rod-shaped telescopic antenna 17a and a fixed helical antenna 17b. The fixed helical antenna 17b is directly connected to the high frequency radio circuit section 14. Telescopic antenna 17a
Is capacitively coupled to the fixed helical antenna 17b when pulled upward from the housing of the mobile phone. Reference numeral 18 denotes a second antenna, which is a planar antenna, and is arranged on the upper part on the rear side of the housing of the mobile phone. The CPU 12 switches the switch 19 to perform selection diversity between the first antenna 17 and the second antenna 18. Reference numeral 20 denotes a weak radio wave transmitting unit. When the CPU 12 receives a radio wave with the first antenna 17 or the second antenna 18 and detects an incoming call, the predetermined
The D number (individual identification information) is output from the internal memory to the weak radio wave transmitting unit 20 and transmitted from the flexible antenna 5 by radio. A radio alerting device (not shown), which is a portable receiver in which a matching ID number is registered in the memory in advance, is a flexible antenna 5
When a radio wave transmitted from the mobile phone is received and the ID number coincidence is detected, the vibrator is driven to notify the mobile phone of an incoming call by vibration. Incoming call display can be performed individually by using the ID number.

In the above, an example in which the third antenna is routed around the LCD and around the button has been described. However, the present invention is not limited to this, and a battery detachable from the mobile phone housing of the third antenna is described. Pack (battery compartment)
It is also possible to route the antenna to the inside, attach it to the rear substrate on the main substrate 6 while avoiding the planar antenna, or attach it to the side of the case.

[0022]

As described above, according to the first aspect of the present invention, the first antenna protruding from the inside of the housing and the second antenna built in the rear side of the housing are provided. When a mobile telephone that transmits and receives radio waves to and from a wireless base station connected to a telephone line network so as to constitute a diversity antenna detects a call signal from the wireless base station received by the diversity antenna Control means for outputting predetermined individual identification information for displaying an incoming call, a weak radio wave transmitting unit for wirelessly transmitting the individual identification information by a weak radio wave, and a loop antenna connected to the weak radio wave transmitting unit And a third antenna disposed in the housing avoiding the first and second antenna arrangement portions, and a portable receiver for displaying an incoming call which is provided separately from the housing. Previous The individual identification information wirelessly transmitted from the third antenna is received to notify an incoming call by vibration or the like. According to the invention of claim 2, the third antenna is further provided with an electromagnetic shield on the inner wall of the housing. The third antenna according to claim 1, wherein the third antenna is arranged around a component around the component, wherein the third antenna is arranged around the component. According to a fourth aspect of the present invention, there is provided the mobile phone according to the third aspect, wherein the third antenna is a flexible printed circuit board formed in advance in a shape suitable for surrounding parts.

Therefore, a small-sized portable telephone having a high added value that can be called only by a portable receiver in which matching individual identification information is registered in advance among portable receivers separated from the portable telephone of the present invention. Can be provided, and the third
Since the antenna described above is drawn around a small open space such as around components in the housing, it is easy to reduce the size of the mobile phone.

[Brief description of the drawings]

FIG. 1 is a diagram showing a basic structure of a third antenna for displaying an incoming call according to an embodiment of the present invention.

FIGS. 2A and 2B show a liquid crystal module unit incorporated in a mobile phone according to an embodiment of the present invention. FIG. 2A shows a liquid crystal module unit to which a flexible printed antenna (hereinafter, a flexible antenna) is attached. (B) is a diagram showing a state where the liquid crystal module unit is separated from the flexible antenna, and (c) is a diagram showing the liquid crystal module unit as viewed from the back side.

FIG. 3 is a view showing one embodiment of the present invention and illustrating attachment of a main board and a liquid crystal module unit.

FIG. 4 is a view showing a final assembling step of the mobile phone according to the embodiment of the present invention.

FIG. 5 is a top view of a flexible antenna 5 constituting a third antenna according to the second embodiment of the present invention.

FIG. 6 is an inside view of a front case 11 of a mobile phone according to a second embodiment of the present invention.

FIG. 7 is a front view of a mobile phone according to a second embodiment of the present invention.

FIG. 8 is an exploded perspective view of a mobile phone according to a second embodiment of the present invention.

FIG. 9 is a view showing a part of parts assembled into a front case 11 of a mobile phone according to a second embodiment of the present invention.

FIG. 10 is a sectional view of a main part showing a second embodiment of the present invention and showing a state in which feed ends a and b of a flexible antenna 5 are soldered to solder lands a ′ and b ′ of a main board 6;

FIG. 11 is a partial block diagram of a mobile phone according to an embodiment of the present invention.

[Explanation of symbols]

 5: Flexible antenna (third antenna) 8: Rear case 11: Front case 17: First antenna 18: Second antenna

Claims (4)

(57) [Claims] 1. A telephone line comprising: a first antenna protruding from the inside of a housing; and a second antenna built in a rear side of the housing, wherein both antennas constitute a diversity antenna. A mobile phone that transmits and receives radio waves to and from a wireless base station connected to a network outputs predetermined individual identification information for displaying an incoming call when a call signal from the wireless base station received by the diversity antenna is detected. And a loop-shaped antenna connected to the weak radio wave transmitting unit, the first and second antennas being connected to the weak radio wave transmitting unit. A third antenna disposed in the housing avoiding the arrangement portion, and wirelessly transmitted from the third antenna to a portable receiver for displaying an incoming call which is provided separately from the housing. Serial mobile telephone, characterized in that it has to notify the incoming call by vibration or the like by receiving the individual identification information. 2. The mobile phone according to claim 1, wherein the third antenna is disposed in the housing so as to avoid a portion where a metal film for electromagnetic shielding is formed on an inner wall of the housing. Phone. 3. The portable telephone according to claim 1, wherein said third antenna is arranged around a component. 4. The portable telephone according to claim 3, wherein said third antenna is a flexible printed circuit board formed in advance in a shape suitable for surrounding parts.