JP3538134B2 - 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 a mobile phone,
In particular, the present invention relates to a mobile phone provided with a foldable antenna.

[0002]

2. Description of the Related Art FIG. 6 is a rear view of an upper portion of a housing of an example of a conventional portable telephone, and FIG. 7 is a side view of FIG. In the conventional mobile phone shown in FIGS. 6 and 7, since components 44 such as a liquid crystal display element (LCD) and a receiver are mounted on a circuit board 43 in a housing, there is almost no antenna storage space in an upper portion of the housing. . For this reason, in the above-mentioned conventional mobile phone,
In order to create a storage space for the whip antenna type antenna 41, a protruding portion 42 is required on the upper back surface of the housing, which limits the thickness and weight of the mobile phone.

Therefore, conventionally, in order to eliminate the protruding portion 42, an antenna is built in a housing, as shown in FIGS.
The mobile phone shown in FIG. FIG. 8 is a structural explanatory view of an upper part of a housing of another example of the conventional mobile phone, and FIG. 9 is a side view of FIG. As shown in FIGS. 8 and 9, in this conventional mobile phone, an inverted F antenna 37 is built in a housing, and a part thereof is connected to a GND plane 38.

FIG. 10 is a perspective view of a main part of still another example of a conventional portable telephone. As shown in the figure, in this mobile phone, a pattern helical antenna 40 is built in a housing as a component. In the conventional mobile phones shown in FIGS. 8 to 10, since the inverted F antenna 37 or the pattern helical antenna 40 is built in the housing, the mobile phone is thinner than the conventional mobile phones shown in FIGS. Can be realized.

[0005]

However, FIG.
And the conventional mobile phone shown in FIG.
7 is the surface of the substrate on which the component 39 is mounted. To maintain the characteristics of the inverted F antenna 37, the height between the inverted F antenna 37 and the GND surface 38 is required to some extent. In addition, since the height of the component 39 needs to be considered, there is a problem that the thickness is insufficiently reduced.

In the conventional portable telephone shown in FIG. 10, the pattern helical antenna 40 is mounted as a component. However, the thickness of the substrate and the thickness of the components mounted on the front and back of the substrate are required. There is also a problem that the thickness cannot be further reduced and the bandwidth of the antenna is narrow.

[0007] The present invention has been made in view of the above points,
It is an object of the present invention to provide a mobile phone which can be made thinner and lighter than a mobile phone having a housing built-in antenna.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention has a first and a second housing which can be folded and expanded around a hinge portion, and is built in the first housing. A plate-like element that operates as an antenna, in which a plurality of holes for component embedding are formed, a component embedded in the hole of the element, and a circuit board embedded in the second housing. This configuration has a control circuit and a transmission / reception circuit, and a power supply line connecting the element and the transmission / reception circuit. According to the present invention, since a hole is formed in the element incorporated in the first housing and a predetermined component is embedded in the hole, the space in the first housing can be effectively used.

Further, in order to achieve the above object, the present invention provides first and second housings that can be folded and expanded around a hinge portion, and is built in the first housing. A first plate-shaped element having a plurality of holes for embedding and operating as an antenna, a second element capable of extension and storage, a component embedded in the hole of the first element, and a second element. Connecting means for connecting the second element to the first element when the element is extended and stored in the first housing; a control circuit on a circuit board, which is built in the second housing; It has a configuration including a transmission / reception circuit and a power supply line connecting the first element and the transmission / reception circuit.

According to the present invention, a hole is formed in the first element built in the first housing, and a predetermined component is embedded in the hole, so that the space in the first housing can be effectively used and By connecting the second element to the first element when the second element is extended, the antenna length can be increased.

Here, among the plurality of holes drilled in the first element, it is desirable that the hole of the maximum size is sufficiently smaller than the wavelength of the radio wave to be transmitted and received. The components embedded in the holes of the first element are a receiver, a backlight, and a display unit, and the other components are built in the second housing. According to the present invention, only the necessary minimum components are mounted on the first housing.

Here, it is desirable that the plate-like element is composed of a part of a plate. Further, it is preferable that the plate-shaped first element is formed of a part of the plate.

[0013] In order to achieve the above object, the present invention comprises first and second housings that can be folded and expanded around a hinge portion, and are built in the first housing, A configuration including an element that operates as an antenna, in which a hole for component embedding is formed, that operates as an antenna, a transmitting / receiving circuit that is built in the second housing, and a feed line that connects the element and the transmitting / receiving circuit. It was done.

Here, it is preferable that the number of the holes is plural. Further, it is desirable that the element has a plate shape. Further, it is desirable that the element is formed of a plate-shaped part.

[0015] It is preferable that, of the holes formed in the element, a hole having a maximum size is sufficiently smaller than a wavelength of a radio wave to be transmitted and received. Further, it is preferable that components embedded in the holes of the element are a receiver, a backlight, and a display unit, and other components are incorporated in the second housing.

Further, in order to achieve the above object, the present invention comprises first and second housings that can be folded and expanded around a hinge portion, and are built in the first housing, A first element acting as an antenna having a hole for component embedding, and a second extendable and retractable element;
Element, connecting means for connecting the second element to the first element when the second element is extended and when the second element is stored in the first housing, and built-in to the second housing And a power supply line connecting the first element and the transmission / reception circuit.

Here, it is desirable that the number of the holes is plural. Further, it is desirable that the first element has a plate shape. Further, it is desirable that the first element is formed of a plate-shaped part.

[0018] It is preferable that, of the holes formed in the first element, the hole having the maximum size is sufficiently smaller than the wavelength of the radio wave to be transmitted and received. In addition, it is preferable that components to be embedded in the holes of the first element are a receiver, a backlight, and a display unit, and that other components are incorporated in the second housing.

[0019]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic perspective view of a first embodiment of a mobile phone according to the present invention, FIG. 2 is a rear view of the upper part of the housing of FIG. 1, and FIG. 3 is a side sectional view of the upper part of the housing of FIG.
In each drawing, the same components are denoted by the same reference numerals. FIG.
As shown in FIG. 2 and FIG. 2, this embodiment has a configuration in which the upper housing 1 and the lower housing 2 can be folded or expanded around the hinge portion 13.

An antenna 3, a receiver 7, a backlight 8, and a display unit 9 such as an LCD are wired to the upper housing 1 by a flexible printed circuit board 14. Antenna 3
Is a conductor, and holes 4, 5, and 6 for embedding components are respectively formed in a plate-shaped element. Of these holes, the receiver 4 is provided in the hole 4 and the backlight 8 is provided in the hole 5.
However, the display unit 9 is embedded in the hole 6. The size of the holes 4, 5, and 6 is set to the minimum necessary according to the size of the components 7 to 9 to be embedded.

On the other hand, the lower housing 2 is mounted with components other than the substrate which has been conventionally provided on the upper portion of the housing and the accompanying components other than the receiver 7, the backlight 8 and the display unit 9 such as an LCD. That is, the circuit board 10 and the transmission / reception circuit 15 and the control circuit 16 formed thereon are mounted on the lower housing 2. The transmission / reception circuit 15 is connected to the antenna 3 at the feeding point 11 via the feeding line 12.

As a result, the upper casing 1 of this embodiment
As can be seen from FIG. 3 showing a side cross section of FIG. 3, the receiver 7, the backlight 8, and the display unit 9 are embedded in the holes 4 to 6 opened in the antenna 3. The thickness can be reduced to about the height of components such as the light 8 and the display unit 9, and the weight can be reduced by opening the holes 4 to 6 in the antenna 3.

Next, the operation of this embodiment will be described. In FIG. 1, at the time of transmission, the transmission / reception circuit 15 operates according to a signal from the control circuit 16, and transmission power is supplied to the antenna 3 from the power supply line 12. Further, the reception wave received by the antenna 3 is input from the feeding point 11 to the transmission / reception circuit 15 through the feeding line 12, where a predetermined reception process is performed.

The antenna 3 used for transmission and reception is
For example, it has a flat shape of 7.5 cm in the vertical direction and 4.0 cm in the horizontal direction, and operates as a monopole antenna. The holes 4 to 6 formed in the antenna 3 are the largest ones for embedding the display unit 9 and are approximately 2.5 c in the vertical direction.
m, a rectangular size of about 3.5 cm in the horizontal direction. This is the wavelength (800
(37.5 cm for MHz)
It does not affect the characteristics of the antenna used in the mobile phone. The wiring of components such as the receiver 7, the backlight 8, and the display unit 9 such as an LCD, and the flexible printed board 14 for mounting do not affect the antenna 3.

Next, a second embodiment of the present invention will be described. FIG. 4 is a schematic perspective view of a second embodiment of the mobile phone according to the present invention, and FIG. 5 is a rear view of the upper part of the housing of FIG. In each drawing, the same components as those in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof will be omitted. As shown in FIGS. 4 and 5, this embodiment is characterized in that an expandable and storable element 21 is provided in the upper housing 1. FIG. 4 shows the back surface of the upper housing 1 when the element 21 is extended, and FIG.

As shown in FIG. 4, holes 4, 5, and 6 for embedding components are respectively formed in a plate-like element 20 which is a conductor provided in the upper casing 1, and a receiver is formed in the hole 4. 7, a backlight 8 is embedded in the hole 5, and a display unit 9 is embedded in the hole 6. When the element 21 in FIG. 4 is extended, the element 21 is connected to the perforated built-in type element 20 via the connection metal fitting 22, and the element 20 and the element 21 operate as an antenna.

When the element 21 is stored, as shown in FIG. 5, the element 21 is connected to a perforated type element 20 via a lower metal 24 and a connection fitting 23, and the element 20 serves as an antenna. Operate.

In this embodiment, similarly to the first embodiment, a board, which has conventionally been located at the upper part of the housing, and the associated components other than the display 7, such as the receiver 7, the backlight 8, and the LCD, are provided in the lower housing. Since the receiver 7, the backlight 8, and the display unit 9 are embedded in the holes 4 to 6 that are mounted on the body 2 and open in the element 20, the thickness of the upper housing 1 is determined by the receiver 7, the backlight 8, and the display. It can be made as thin as the height of the parts such as the part 9 and the like.
6 can be reduced in weight by opening.

Further, in this embodiment, the element 2
No. 1 can extend the antenna length including the element 20 when extended, so that there is no projecting portion of the housing as in the conventional case, and the antenna characteristics are improved while keeping the housing thin to some extent can do.

Next, a third embodiment of the present invention will be described. FIG. 11 is a schematic perspective view of a mobile phone according to a third embodiment of the present invention. In the drawing, the same components as those in FIG. 1 and other drawings are denoted by the same reference numerals, and description thereof will be omitted.

A circuit board 100 is built in the upper housing 1, and an antenna 3 made of a wiring pattern is printed on the surface of the circuit board 100 in a planar manner. That is, the plate-like antenna 3 shown in the first and second embodiments.
Instead of the plate-shaped antenna 3. The antenna 3 is connected to a transmission / reception circuit 15 of the lower housing 2 via a feed point 11 and a feed line 12.

A backlight 8 is provided on the surface of the circuit board 100.
Are directly mounted, and a receiver 7 and a display unit 9 such as an LCD are embedded and arranged in holes 4 and 6 formed in the circuit board 100, respectively. These receivers 7,
The backlight 8 and the display unit 9 pass through a wiring pattern formed on the surface or an inner layer of the circuit board 100, and further through a flexible printed board 14 to control the control circuit 16 of the lower housing 2.
Is electrically connected to

The wiring pattern of the antenna 3 or the circuit board 100 may be formed as a wiring pattern on the surface of the circuit board 100 by a method such as etching, metal plating, vapor deposition, or the like. It may be formed as a wiring pattern and attached to the surface of the circuit board 100. Further, the antenna 3 and the wiring pattern of the circuit board 100 may be formed on either side of the circuit board 100, or may be formed on the inner layer of the circuit board 100 by using a multilayer board. .

The shape of the antenna 3 is
May be formed over the entire surface, or only a part thereof may be formed in an arbitrary shape. Further, holes 4 to 6 for embedding components are provided at arbitrary positions of the antenna 3 so that these holes 4
-6 may be embedded with components 7-9. Furthermore,
The components 7 to 9 may be directly mounted on the surface of the circuit board 100 without providing the holes 4 to 6 for embedding the components.

As a structure for feeding power to the antenna 3, instead of a structure for feeding power from the transmitting / receiving circuit 15 of the lower housing 2 to the feeding point 11 of the antenna 3 via the feeding line 12, the transmitting / receiving circuit 15 of the lower housing 2 is replaced. From the power supply point 3 of the antenna 3 via the flexible printed board 14. In this case, the flexible printed board 14 for feeding power to the antenna 3 and the flexible printed board 14 for electrical connection to the components 7 to 9 may be provided separately or integrally.

Further, the third embodiment of the present invention may be combined with the second embodiment of the present invention. That is, in FIG. 11, the wiring pattern of the antenna 3 formed on the surface of the circuit board 100 may be extended to be electrically connected to the connection fittings 22 and 23 of FIG.

Further, the above embodiments may be combined with each other. In this case, it is needless to say that the technical features and structural variations described in each of the above embodiments are applied to another embodiment, which are also included in the concept of the present invention.

[0038]

As described above, according to the present invention,
By making holes in the antenna or element built in the housing and embedding predetermined components in the holes, the space inside the housing can be used effectively, making the upper housing with the antenna or element built in thinner can do.

Further, according to the present invention, since a hole is formed in the antenna or the element incorporated in the housing, the weight of the device can be reduced.

Further, according to the present invention, when the second element that can be extended and stored is extended, it is connected to the first element in the first housing to increase the antenna length. The antenna characteristics can be further improved as compared with the case where the antenna operation is performed using only one element.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a first embodiment of the present invention.

FIG. 2 is a diagram showing a rear view of the upper part of the housing of FIG. 1;

FIG. 3 is a side sectional view of the upper housing of FIG. 1;

FIG. 4 is a schematic perspective view of a second embodiment of the present invention.

FIG. 5 is a diagram showing a rear view of the upper part of the housing of FIG. 4;

FIG. 6 is a rear view of the upper part of a housing of an example of a conventional mobile phone.

FIG. 7 is a side view of FIG. 6;

FIG. 8 is a structural explanatory view of an upper part of a housing of another example of the conventional mobile phone.

FIG. 9 is a side view of FIG.

FIG. 10 is a perspective view of a main part of still another example of a conventional mobile phone.

FIG. 11 is a schematic perspective view of a third embodiment of the present invention.

[Explanation of symbols]

1 Upper case 2 Lower housing 3 Antenna 4, 5, 6 holes 7 Receiver 8 Backlight 9 Display 10. Circuit board 11 feeding point 12 Power supply line 13 Hinge part 14 Flexible Printed Circuit Board 15 Transmitter / receiver circuit 16 Control circuit 20 Housing built-in element 21 Elements that can be extended and stored 22, 23 Connection metal fittings 24 Metal under Element 21 100 circuit board

Claims (20)

(57) [Claims] 1. A first housing and a second housing which are foldable and expandable around a hinge portion, and a plurality of holes embedded in the first housing are provided for embedding components. A plate-shaped element that operates as an antenna; a component embedded in a hole of the element; a control circuit and a transmission / reception circuit on a circuit board, which are built in the second housing; and the element and the transmission / reception. And a power supply line for connecting a circuit. 2. A plurality of holes formed in the element, wherein a hole having a maximum size has a long side which is 1/1 of a wavelength transmitted and received.
The mobile phone according to claim 1 , wherein the value is 0 or less . 3. The device according to claim 1, wherein the components embedded in the holes of the element are a receiver, a backlight and a display unit, and the other components are built in the second housing. Mobile phone. Wherein elements of the plate may be a cellular phone according to any one of claims 1 to 3, characterized in that it consists of a portion of the plate. 5. A first and a second housing that can be folded and expanded around a hinge portion, and a plurality of holes embedded in the first housing for embedding components are provided. , A plate-shaped first that operates as an antenna
An element that can be extended and stored; a component that is embedded in a hole of the first element; and a component that is extended when the second element is extended and stored in the first housing. Connecting means for connecting a second element to the first element; a control circuit and a transmitting / receiving circuit on a circuit board, which are built in the second housing; and connecting the first element and the transmitting / receiving circuit. A mobile phone having a power supply line to be connected. 6. A plurality of holes formed in the first element, wherein a hole having a maximum size has a wavelength corresponding to a wavelength transmitted and received by a long side.
The mobile phone according to claim 5 , wherein the number is 1/10 or less . 7. The component embedded in the hole of the first element is a receiver, a backlight, and a display unit,
6. The mobile phone according to claim 5, wherein other components are incorporated in the second housing. The first element of claim 8, wherein said plate-like, for mobile phones according to any one of claims 5 to 7, characterized in that it consists of a portion of the plate. 9. A first and second housing that can be folded and expanded around a hinge portion, and a hole embedded in the first housing for component embedding is provided. A mobile phone, comprising: an element that operates as an antenna; a transmission / reception circuit built in the second housing; and a power supply line connecting the element and the transmission / reception circuit. 10. The mobile phone according to claim 9 , wherein said plurality of holes are provided. Wherein said element is a cellular phone according to claim 9 or 10, characterized in that a plate-shaped. 12. The element is mobile phone according to claim 9 or 10, characterized in that it consists of a portion of the plate. 13. A hole having a maximum size among holes formed in the element is one-tenth of a wavelength transmitted and received by a long side.
Cellular phone according to any one of claims 9 to 12, wherein the or less. 14. The component to be embedded into the hole of the element, the receiver, a backlight and the display unit, the other parts claims 9 to claims characterized in that it is incorporated in the second housing Item 14. The mobile phone according to any one of Items 13 . 15. A first and second housing foldable and expandable about a hinge portion, and a hole embedded in the first housing for component embedding is provided. A first element that operates as an antenna; a second element that can be extended and stored; and a second element that is expanded and stored in the first housing when the second element is expanded and stored in the first housing. A mobile phone, comprising: a connection unit that connects to the element (1), a transmission / reception circuit built in the second housing, and a power supply line that connects the first element and the transmission / reception circuit. 16. The mobile phone according to claim 15 , wherein the number of the holes is plural. 17. The first element is a cellular phone according to claim 15 or claim 16, characterized in that a plate-shaped. 18. The method of claim 17, wherein the first element is a cellular phone according to claim 15 or claim 16, characterized in that it consists of a portion of the plate. 19. The maximum size hole among holes drilled in the first element is one-third of the wavelength transmitted and received by the long side.
Cellular phone according to any one of claims 15 to 18, characterized in that 10 or less. 20. The component embedded in the hole of the first element is a receiver, a backlight and a display unit, and the other components are built in the second housing. The mobile phone according to any one of 15 to 19 ,