JP2000174527A - Portable electronic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable electronic device having a radio telephone function where usability is enhanced through the factory-equipped radiotelephone function and highly reliable transmission and reception can be ensured at all times. SOLUTION: An impedance matching board 17 fitted with a whip antenna (main antenna) 14 is fixed to an extension part of a shield frame 16. Thus, a GND of n impedance matching circuit formed on the impedance matching board 17 is directly coupled with the shield frame 16. Since the GND of the impedance matching circuit has a same potential with that of the shield frame with a wide ground area in terms of high frequencies, the ground characteristics of the antenna is made stable and the highly reliable and stable transmission reception can be maintained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable electronic device having a wireless communication function and having a display unit housing provided with a display panel.

The present invention further provides a wireless communication function integrated with a computer device such as a notebook personal computer or a palmtop personal computer in which a display housing is rotatably provided on a device main body via a hinge mechanism. The present invention relates to a portable electronic device provided in the company.

Further, the present invention relates to a portable electronic device such as a portable computer having a portable telephone function, and more particularly to a portable electronic device characterized by antenna characteristics and antenna arrangement.

[0004]

2. Description of the Related Art In recent years, various portable electronic devices such as a mobile PC which can be easily carried have been developed and spread. In a portable electronic device of this type, for example, a portable computer having a communication interface such as a modem function, a PHS or a portable telephone is connected to a communication port of the device via a dedicated connection cable. A so-called mobile PC (personal computer) for transmitting information processed by a computer to another device via a public wireless network, and receiving information processed by another device via a public wireless network.
Information can be exchanged.

Conventionally, when information is exchanged by a mobile PC as described above, a user has to use a data communication card for enabling data communication by connecting a portable telephone (or PHS) to a device via a cable. It must be purchased and set in accordance with the use of the card, and the operation of connecting the PC and mobile phone with a dedicated cable as described above is involved, so the operation is troublesome and easy to use. There was a problem that was bad.

Therefore, in order to improve the above-mentioned usability, it is conceivable that a wireless telephone function is built in the PC and provided as a standard equipment. Many circuits that generate high-frequency noise, such as drivers, are mounted, and these noise sources adversely affect the transmission / reception operation of the wireless telephone function unit as an unstable factor, so that reliable and stable transmission / reception operation cannot be expected. Problems have arisen, and it has been difficult to realize a PC in which a wireless telephone function is incorporated in the same housing.

In this case, in particular, the circuit section of the PC serving as the noise source and the wireless telephone function section are both housed in the same housing, and the arrangement of the circuit section serving as the noise source and the wireless telephone function section are extremely close. Therefore, the radio antenna of the radio telephone function unit easily picks up the radiation noise of the above noise source more than the external noise, and since this incident noise affects the transmission / reception operation, the sensitivity, characteristics, and the use of the antenna in use The radio wave environment greatly affects the original transmission / reception operation (wireless communication operation). For this reason, meticulous and advanced technology is required for the structure and arrangement of the antenna. For computer equipment that has not been established, and therefore requires easy portability, incorporate the wireless telephone function unit in the same housing to ensure reliable and stable transmission and reception operations. It was difficult.

[0008]

As described above, conventionally, in a computer device which is required to be easily carried, a radio telephone function unit is incorporated in the same housing to realize a highly reliable stable transmission / reception operation. Therefore, conventionally, a PHS or a mobile phone is connected to the communication port of the device via a dedicated connection cable,
After a predetermined procedure, information must be exchanged, which is troublesome and inconvenient to use.

The present invention has been made in view of the above circumstances,
It is an object of the present invention to provide a portable electronic device having a wireless telephone function, which can improve usability by providing a wireless telephone function as standard equipment, and can always secure a stable and highly reliable transmission / reception operation.

Further, the present invention provides a portable electronic device having a display unit housing provided with a display panel, which is provided with a wireless telephone function as standard equipment, thereby improving usability and maximizing the performance of the antenna. Wireless communication function that minimizes the effects of noise and maintains stable and reliable transmission / reception operations regardless of the place of use, usage conditions, and surrounding environment. An object of the present invention is to provide a portable electronic device provided with the electronic device.

[0011]

SUMMARY OF THE INVENTION The present invention relates to a portable electronic device having a display unit housing provided with a display panel, which is provided with a wireless telephone function as a standard equipment.
A plurality of antennas are provided in the display housing, and a diversity receiving circuit is formed using the antennas. This maximizes the performance of the antenna in the wireless telephone function, minimizes the effects of noise, and is always stable regardless of the place of use, use conditions, surrounding environment, etc. A portable electronic device having a wireless communication function that can maintain a highly reliable transmission / reception operation can be provided.

Further, in the present invention, in a portable electronic device having a display unit housing provided with a display panel, in order to achieve the above object, an antenna is provided on the display unit housing. A ground circuit of the antenna is provided, and a shield member for electrically shielding the display panel is provided. This stabilizes the ground characteristics of the antenna (particularly, the high-frequency potential of the antenna), and can maintain a more stable and highly reliable transmission / reception operation.

Further, the present invention provides a portable electronic device having a display unit housing provided with a display panel, in order to achieve the above object, to provide an antenna, A ground circuit of the antenna is provided, and a shield member for electrically shielding the display panel and a high-frequency module connected to the antenna are provided. Thereby, the ground characteristics of the antenna can be stabilized, and a more stable and highly reliable transmission / reception operation can be maintained.

Further, according to the present invention, in a portable electronic device having a display unit housing provided with a display panel, in order to achieve the above object, a main antenna, An auxiliary antenna, a shield member that forms a ground circuit of the main antenna and electrically shields the display panel, and a high-frequency module that is connected to the antennas and has a diversity receiving circuit by the antennas is provided. It is characterized by becoming. As a result, the receiving characteristics of the antenna can be greatly improved, and a more stable and highly reliable transmission / reception operation can be maintained.

Further, according to the present invention, in a portable electronic device having a display unit housing provided with a display panel, in order to achieve the above object, the display unit housing is provided with the display unit housing. A protruding rod-shaped main antenna is provided, a first conductor serving as an antenna element disposed along the upper surface of the display unit housing, and a side surface in contact with the upper surface inside the display unit housing. By providing a built-in antenna made of the second conductor serving as the arranged ground portion and performing diversity reception with these antennas, higher diversity reception can be expected, and the reception characteristics of the antenna are greatly improved. Thus, a more stable and highly reliable transmission / reception operation can be maintained.

Further, in the present invention, in a portable electronic device having a display unit housing provided with a display panel, in order to achieve the above object, at one corner of the upper surface of the display unit housing. ,
A rod-shaped main antenna protrudable from the housing is provided, and a first conductor serving as an antenna element arranged along the upper surface and a side conductor are arranged on the other corner of the upper surface of the display unit housing. By providing a built-in antenna made of the second conductor that serves as the ground portion and performing diversity reception with these antennas, more effective diversity reception can be expected, and the reception characteristics of the antenna are greatly improved, and more stable It is possible to maintain reliable transmission / reception operations.

Further, in the present invention, in a portable electronic device having a display unit housing provided with a display panel, in order to achieve the above object, one side of an upper surface of the display unit housing is provided. A rod-shaped antenna provided and a first conductor serving as an antenna element, which is provided in the other corner of the upper surface of the display unit housing and is disposed along the upper surface, and a second conductor serving as a ground portion is disposed along the side surface. A built-in antenna, a diversity receiving circuit provided in a signal path of each antenna, and a voice output for processing received information received via the diversity receiving circuit and outputting received call information. Means,
It is characterized by comprising voice input means and transmitting means for transmitting a voice signal input by the voice input means from at least one of the antennas.

Further, the present invention is directed to a portable electronic device in which a display housing is rotatably provided on a main body of the device via a hinge mechanism. An antenna provided at a free end of the display panel, a display panel provided in the display unit housing, a shield member for electrically shielding the display panel, an impedance matching circuit for circuit-connecting the antenna, A circuit connecting means for connecting the ground-side connection end of the impedance matching circuit to the shield member at the same potential in high frequency is provided.

Further, the present invention is directed to a portable electronic device in which a display unit housing is rotatably provided on a device main body via a hinge mechanism. An antenna provided at a free end of the display unit, a display panel provided in the display unit housing, a shield member for electrically shielding the display panel, and a support member provided in the display unit housing to support the antenna. An impedance matching substrate having a circuit pattern forming surface substantially perpendicular to the axial direction of the antenna, and an impedance matching circuit formed on the surface; And circuit means for setting the same potential.

Further, the present invention is directed to a portable electronic device in which a display unit casing is rotatably provided on a device main body via a hinge mechanism. An antenna provided at a free end of the display unit, a display panel provided in the display unit housing, and a shield member for electrically shielding the display panel, and a shield member provided in the display unit housing, An impedance matching substrate having a circuit pattern surface that is substantially perpendicular to the surface, and an impedance matching circuit formed on the surface portion, and circuit means for making a ground circuit of the impedance matching substrate the same potential as the shield member at high frequency. It is characterized by comprising.

According to the configuration of the present invention as described above, usability can be improved by providing a wireless telephone function as standard equipment, antenna performance can be maximized, and the effect of noise can be minimized. A stable and highly reliable transmission / reception operation can always be maintained without being affected by a place, a use state, a surrounding environment, and the like.

Here, an outline of a main part of a specific configuration according to the embodiment of the present invention will be exemplified.

According to the present invention, for example, in a mobile notebook PC with a built-in portable telephone, a built-in auxiliary antenna that performs diversity operation together with the main antenna at the time of reception is provided inside the PC housing, separately from the main antenna that transmits and receives data and voice. Incorporate.

Both the main antenna and the built-in auxiliary antenna,
It is arranged on the periphery of the liquid crystal display screen of the PC. The main antenna is housed inside the housing when the liquid crystal display screen (display unit housing) is closed when the PC is not used,
Care has been taken to minimize contact between the antenna element and external elements.

On the other hand, when the liquid crystal screen is opened when the PC is used, the main antenna is pulled out, and the PC stands in a direction perpendicular to the desk surface (keyboard surface) on which the PC is placed.

The main antenna is once connected to the high-frequency unit via a coaxial cable after matching the input impedance of the high-frequency unit of the mobile phone with the impedance matching board.

At this time, the GND of the impedance matching substrate
The (ground; ground) terminal is electrically and mechanically connected to the shield case of the liquid crystal panel at the shortest distance,
The high-frequency potential of the antenna is stabilized.

The built-in auxiliary antenna is also arranged at the periphery of the liquid crystal screen of the PC. The material is made of a metal piece or a flexible cable, for example, an inverted F type or a balun type antenna having high noise resistance. Thus, regardless of the open / closed state of the liquid crystal display screen, the liquid crystal display screen remains fixed inside the display unit housing.

With the above antenna structure, the two antennas incorporated in the PC exhibit a stable space diversity effect, minimize the deterioration of the receiving performance, and provide a stable sensitivity characteristic. High reception performance.

[0030]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a mobile P according to an embodiment of the present invention.
FIG. 2 is an external view of the mobile PC, and FIG.

In FIG. 1, reference numeral 1 denotes a main body of a notebook PC, which is simply referred to as a PC main body. Reference numeral 2 denotes a display unit housing rotatably provided on the PC main body 1 via a hinge mechanism 3.

11 and 12 and 21 and 22 are P
C is a component of the PC provided in the C body 1, 11 is a keyboard provided on the upper surface of the housing, and 12 is a main board housed inside the housing. 21 is the main board 12
The CPU 22 mounted on the main board 12 is a data communication processing unit similarly mounted on the main board 12, and includes a DCA (Digital
Cellular Adapter) 23.

Reference numerals 13 to 19 denote components of the PC provided in the display housing 2, respectively, 13 is a liquid crystal display panel, 14 is a whip antenna (antenna element) serving as a main antenna, and 15 is an auxiliary antenna. 16 is a liquid crystal display panel 13
Reference numeral 17 denotes an impedance matching substrate of a whip antenna (main antenna) 14, reference numeral 18 denotes an accu point for moving a cursor, and reference numeral 19 denotes a power button.

Here, on the impedance matching board 17 of the whip antenna (main antenna) 14, an impedance matching circuit for matching the antenna impedance with the input impedance of the RF module (PDC) 24 having a portable telephone function is provided. Formed and G of the circuit
An ND (ground; ground) is directly screwed to the extension of the shield frame 16 via a lug terminal and connected to a circuit so that the shield frame 16 of the liquid crystal display panel 13 is used as a ground common. Specific circuit coupling means will be described later with reference to FIG.

FIG. 3 is a side view showing a single structure of the whip antenna (main antenna) 14, and FIG. 4 is a side view showing a single structure of the built-in antenna (auxiliary antenna) 15. In FIG. 4, 15a is an antenna element, 15b is a GND element, and a specific structure will be described later. 15at and 15bt are connection terminals of the coaxial cable 40 provided in each of the above elements.

FIG. 5 shows the structure of the impedance matching substrate 17 and the structure for mounting the whip antenna (main antenna) 14 on the impedance matching substrate 17.
GND (ground) of the impedance matching substrate 17
FIG. 3 is an exploded perspective view showing a structure of a lug terminal portion for circuit-coupled to a shield frame 16 of the liquid crystal display panel 13. In the drawing, reference numeral 17a denotes an impedance matching circuit formed on the impedance matching substrate 17 in a pattern, and 17b denotes a conductive pattern provided on a ground pattern for fixing the impedance matching substrate 17 to the shield frame 16 and circuit-connecting GND (ground). A lug terminal, Na is a nut for fixing the whip antenna (main antenna) 14 to the impedance matching board 17, 50 is an input / output signal of the whip antenna (main antenna) 14 to an RF module (PDC) 24 having a cellular phone function. This is a coaxial cable for output.

FIG. 6 is an exploded perspective view showing a mounting structure to the impedance matching substrate 17 in the case of using a rod antenna that is rotatable in all directions as a main antenna instead of the whip antenna (main antenna) 14. . In the figure, reference numeral 14a denotes an antenna element part which can be rotated in all directions;
b is an antenna base, 14c is a rotation mechanism, and 14d is a rotation mechanism.

FIG. 7 is a block diagram showing a circuit configuration of a main part in the above embodiment. In the figure, 21, 22, and 7
Numerals 2 to 75 are mounted on the main board 12, 21 is a CPU for controlling the entire system, 22 is a data communication processing unit (DCU) configured using a DCA (Digital Cellular Adapter) 23, and 72 is CPU 21
ROM storing the control program of the CPU 21
, A keyboard controller (KBC) 74 for controlling the input of the keyboard 11, and a display controller (DISP-CONT) 75 for controlling the display drive of the liquid crystal display panel 13. Will be described later.

Reference numerals 76 to 83 denote components and input / output devices of the RF module (PDC) 24 having a cellular phone function. Reference numeral 76 denotes a whip antenna (main antenna) 14 and a built-in antenna according to the strength of radio waves. (Auxiliary antenna) 15 high-frequency switch (ANT-S)
W) and 77 are wireless units of mobile phones (T / RC)
U) and 78 are control circuits (COU) for controlling signal input / output of the entire RF module, 79 is a DSP circuit for converting digital signals into analog signals, and 80 is an audio circuit (AUDIO) for amplifying analog audio signals. 81
Is a microphone for communication (MIC), 82 is a speaker (SP), and 83 is a sounder, and their operations will be described later.

Reference numeral 71 denotes a maintenance 16-core connector (CON) provided on the housing surface of the PC main body 1, which has a check antenna terminal (EXT-ANT) and is used for setting a telephone number, checking operation, and the like. You.

FIGS. 8 and 9 are diagrams for explaining the relationship between the arrangement of the impedance matching board 17 and the radiation characteristics of the antenna according to the embodiment of the present invention. FIG. FIG. 9 is a characteristic diagram showing an antenna radiation pattern when the pattern surface is arranged at right angles to the display surface of the liquid crystal display panel 13 (the circuit pattern surface is orthogonal to the axial direction of the whip antenna (main antenna) 14). FIG. 4 is a characteristic diagram showing an antenna radiation pattern when the circuit pattern surface of the impedance matching substrate 17 is arranged in parallel with the axial direction of the whip antenna (main antenna) 14. In FIGS. 8 and 9, (a)
Is the radiation characteristic of the YX plane viewed from the Z direction (upper case) shown in (d), and (b) is the X direction (front of the panel) shown in (d).
The radiation characteristics of the ZY plane viewed from the perspective, (c) is Y shown in (d).
The radiation characteristic of the ZX plane viewed from the direction (side of the housing) is shown.

FIG. 10 is a diagram showing another example of the configuration of the built-in antenna (auxiliary antenna). Here, an inverted F antenna is shown as an example.

Here, the configuration and operation of the embodiment of the present invention will be described with reference to the above-mentioned drawings. First, FIG.
The overall processing operation in the mobile PC with a built-in mobile phone function according to the embodiment of the present invention will be described with reference to the block diagram shown in FIG.

When data (characters, pictures, etc.) created on the liquid crystal display panel 13 by operating the keyboard 11 of the PC body 1 or the like is transmitted to an arbitrary device via a mobile phone line, the data is transmitted using the DCA 23. An RF module (PDC) having a cellular phone function after being processed by the data communication processing unit (DCU) 22 and the CPU 21 configured
The signal is transmitted from a whip antenna (main antenna) 14, which is a transmitting / receiving antenna, via the base station 24, and is transmitted to the outside via a base station via a portable radio telephone line.

Radio data arriving from the outside via a base station is received by a diversity receiving system including a whip antenna (main antenna) 14 and a built-in antenna (auxiliary antenna) 15 functioning as a receiving antenna, and is provided with a portable telephone function. The frequency is converted by an RF module (PDC) 24 having a function of a DCC 23 and processed by a CPU 21 and the like provided in a data communication processing unit (DCU) 22. Will be displayed.

The problem at this time is that the DCA 23 or C
Clock noise radiated from the PU 21 is picked up by the whip antenna (main antenna) 14 and the built-in antenna (auxiliary antenna) 15 as receiving antennas, and correct data cannot be reproduced. In particular, this phenomenon is conspicuous in a weak electric field region, and leads to a significant deterioration in reception performance.

The present invention solves this problem, and improves the data reception performance in a weak electric field area by devising the structure and arrangement of the antenna.

As shown in FIG. 5, a whip antenna (main antenna) 14 serving as a transmitting / receiving antenna has a length of λ / 2 with respect to a wavelength corresponding to the frequency of a mobile phone.
It is fixed to the impedance matching substrate 17 by a nut Na. At this time, the whip antenna (main antenna) 14 is mounted on the impedance matching substrate 17 such that the pattern surface of the impedance matching circuit 17a formed on the impedance matching substrate 17 is perpendicular to the axial direction of the whip antenna (main antenna) 14. Is fixed. An impedance matching circuit 17a formed of a conductive pattern on the impedance matching substrate 17 has an impedance of the whip antenna (main antenna) 14 and an RF having a mobile phone function.
The input impedance of the module (PDC) 24 is matched and connected to the RF module (PDC) 24 via a coaxial cable 50.

The impedance matching board 17 is provided with a conductive lug terminal 17b having a screw hole perpendicular to the antenna mounting hole.
Circuit connected by soldering or the like. The impedance matching substrate 17 to which the whip antenna (main antenna) 14 is attached is fixed to the extension of the shield frame 16 by a fixing screw (not shown) using the screw hole of the conductive lug terminal 17b. Thus, the GND of the impedance matching circuit 17a formed on the impedance matching substrate 17 is directly circuit-coupled to the shield frame 16 via the lug terminal 17b. For this reason, since the GND of the impedance matching circuit 17a has the same high-frequency potential as the shield frame 16 having a large ground area, the ground characteristics of the antenna are stabilized, and a highly reliable and stable transmission / reception operation can be maintained.

The built-in antenna (auxiliary antenna) 15
As shown in FIG. 4, an antenna element 15a and a GND element 15b each composed of a flexible cable are arranged one by one orthogonally (at right angles), and an RF module (PD) is connected via a coaxial cable 40.
C) Connected to 24.

Here, the antenna element 15a and the GN
The length of the D element 15b is adjusted to the impedance of the housing corresponding to the size of the housing. Here, as a result of actually selecting the optimum value, as shown in FIG.
GND element 15 rather than antenna element 15a
b has a longer dimension. Specifically, the antenna element 15a has a length of 59 mm, and the GND element 15b
Is 76 mm in length. With such dimensions, a remarkable improvement in the reception gain was recognized. This specific comparative example is shown below.

Here, the dimensions (antenna element 15a = 59 mm, GND element 15
b = 76 mm) [A] for the built-in antenna (auxiliary antenna) 15, [B] for the comparison harness antenna having both the antenna element and the GND element length of 83.5 mm (λ / 4), and the antenna element and the GND. When the comparative wire antenna having both element lengths of 83.5 mm (λ / 4) is represented by [C], the average reception gain is represented by GR, and the sensitivity (RSSI display with an error rate of 1%) is represented by SR. It was as follows. [A]: GR = (reference; 0 dB), SR = 5 (dB)
μ) [B]: GR = −4.6 dB, SR = 13 (dB)
μ) [C]: GR = −8.5 dB, SR = (not measured because GR is too bad) According to the measurement results, the dimensions according to the above-described embodiment of the present invention (antenna element 15a = 59 mm, GND element 15b = 76 mm) ) Built-in antenna (auxiliary antenna)
It was found that the reception gain at 15 was significantly higher than the other antennas.

Next, the configuration and operation of the RF module (PDC) 24 having a cellular phone function will be described. Here, the operation will be described by taking the reception as an example.

The arriving radio wave of the portable radio telephone incident on the whip antenna (main antenna) 14 and the built-in antenna (auxiliary antenna) 15 is switched by a high-frequency switch (ANT-SW) 76 in accordance with the strength of the radio wave. After
The signal is demodulated by a radio unit (T / R-CU) 77 and input to a control circuit (COU) 78.

Here, when the input signal is a voice,
After the signal processing by the DSP circuit 79, the sound is amplified by the audio circuit (AUDIO) 80 and the speaker (SP)
82. When the input signal is data, the received data is the DCA 23 and the CPU 21.
Display controller (DISP-CON)
T) 75 is displayed on the liquid crystal display panel 13.

In this series of operations, to improve the reception performance, it is necessary to use the whip antenna (main antenna) 14 and the built-in antenna (auxiliary antenna) 15 to maximize the space diversity effect, and to improve the antenna performance. It is very effective to match the impedance to the input impedance of the RF module (PDC) 24 having a mobile phone function accurately on a stable GND.

In the embodiment of the present invention, first, the reference (common) GND of the whip antenna (main antenna) 14 and the built-in antenna (auxiliary antenna) 15 is the largest and the most stable in the liquid crystal display housing 2. Shared with the shield frame (shield case) 16 of the liquid crystal display panel 13 which is
And the noise radiated by the high frequency of the clock noise of the DCA 23 or the like. Further, this effect is enhanced by selecting the length of the whip antenna (main antenna) 14 to be に 対 し て of the wavelength of the mobile phone.

A whip antenna (main antenna) 1
4 as described above,
By arranging the liquid crystal display panel 13 at right angles to the display surface of the liquid crystal display panel 13 and also to the axial direction of the whip antenna (main antenna) 14, the dispersion of antenna elements as external components and the liquid crystal display It always functions as a stable matching circuit even with respect to impedance changes due to dimensional variations of the shield frame 16 of the panel 13.

Further, by adopting such an antenna structure, the best radiation characteristics can be obtained. That is, the antenna radiation pattern measured when the circuit pattern surface of the impedance matching substrate 17 is arranged parallel to the axial direction of the whip antenna (main antenna) 14 has radiation characteristics as shown in FIG. On the other hand, an antenna when the circuit pattern surface of the impedance matching substrate 17 is arranged perpendicular to the display surface of the liquid crystal display panel 13 (the circuit pattern surface is orthogonal to the axial direction of the whip antenna (main antenna) 14). When the radiation pattern is measured, the radiation characteristics are as shown in FIG. 8, and as is clear from this characteristic comparison,
It can be seen that the antenna structure shown in the above embodiment has the best radiation characteristics.

Further, from the viewpoint of space diversity, the distance between the whip antenna (main antenna) 14 and the built-in antenna (auxiliary antenna) 15 is set at both ends of the liquid crystal display housing 2 that are the longest in the longitudinal direction. Therefore, it has a feature that the diversity effect functions effectively. When this effect was actually measured, the degree of deterioration of the built-in antenna (auxiliary antenna) 15 was about 3 dB with respect to the whip antenna (main antenna) 14.
Met.

Further, considering the sensitivity of the antenna from the viewpoint of perspective from the base station, the higher the antenna is installed,
The higher the antenna, the more ideal it is, as it improves in appearance. From this point of view, the antenna according to the embodiment of the present invention is a whip antenna (main antenna).
Both the built-in antenna 14 and the built-in antenna (auxiliary antenna) 15 are placed at the highest position of the notebook PC (the free end of the liquid crystal display housing 2), so that the sensitivity can be increased.

Further, as shown in FIG. 6, by using a rod antenna which can be rotated in all directions as a main antenna instead of the whip antenna (main antenna) 14, the angle of the main antenna can be freely set with respect to the PC. Can be set to Also in this case, the main antenna length is λ / 2 with respect to the wavelength of the mobile phone.

As described above, by using the antenna structure according to the embodiment of the present invention, the effect of the space diversity can be sufficiently secured in the notebook PC having the built-in portable telephone function, and the performance of the antenna is improved. Since the deterioration can be suppressed to the minimum (3 dB), it is possible to avoid a situation in which data communication or voice communication becomes impossible.

[0065]

As described in detail above, according to the present invention, usability can be improved by equipping a wireless telephone function as standard equipment.
In addition, a portable electronic device having a wireless telephone function that can always ensure stable and highly reliable transmission and reception operations can be provided.

Further, according to the present invention, in a portable electronic device having a display unit housing provided with a display panel, usability can be improved by providing a wireless telephone function as standard equipment, and the performance of the antenna can be improved. Wireless communication that can maximize the performance and minimize the effects of noise, and can always maintain stable and reliable transmission / reception operation regardless of the place of use, use condition, surrounding environment, etc. A portable electronic device having a function can be provided.

[Brief description of the drawings]

FIG. 1 is an external view of a mobile PC according to an embodiment of the present invention.

FIG. 2 is an external view of the mobile PC shown in FIG. 1 with a partial panel cut away.

FIG. 3 is a side view showing a single structure of the whip antenna (main antenna) in the embodiment.

FIG. 4 is a side view showing a simple structure of a built-in antenna (auxiliary antenna) in the embodiment.

FIG. 5 shows a structure of the impedance matching substrate in the embodiment, a structure for attaching a whip antenna (main antenna) to the impedance matching substrate, and a GND (ground) of the impedance matching substrate in the liquid crystal display panel. FIG. 4 is an exploded perspective view showing a structure of a lug terminal portion to be circuit-coupled to the shield frame.

FIG. 6 is a perspective view showing another configuration example of the main antenna.

FIG. 7 is a block diagram showing a circuit configuration of a main part in the embodiment.

FIG. 8 is a characteristic diagram showing an antenna radiation pattern when the circuit pattern surface of the impedance matching substrate in the embodiment is arranged at right angles to the display surface of the liquid crystal display panel.

FIG. 9 is a characteristic diagram showing an antenna radiation pattern when the circuit pattern surface of the impedance matching substrate is arranged parallel to the axial direction of the main antenna, for comparison with the antenna radiation pattern in the embodiment.

FIG. 10 is a perspective view showing another configuration example of the built-in antenna (auxiliary antenna).

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Note body PC side body (PC main body), 2 ... Display part housing, 3 ... Hinge mechanism, 11 ... Keyboard, 12 ... Main board, 13 ... Liquid crystal display panel, 14 ... Whip antenna (Main antenna) Reference numeral 15: Built-in antenna (auxiliary antenna), 16: Shield frame (shield case) of the liquid crystal display panel 13, 17: Impedance matching substrate of the whip antenna (main antenna) 14, 18: Accu point for moving the cursor, 19: Power supply Buttons 21 CPU, 22 Data communication processing unit 23 DCA (Digital Cellular Adapter) 24 RF module with telephone function (PDC) 40 Coaxial cable 50 Coaxial cable 71: 16-core connector (CON) for maintenance, 72: ROM, 73: RAM, 74: Keyboard controller (KBC), 75: Display controller (DISP-CONT), 76: High-frequency switch (ANT-SW), 77: Radio unit (T / R-CU) of mobile phone, 78: control circuit (COU), 79: DSP circuit, 80: audio circuit (AUDIO), 81: microphone (MIC), 82: speaker (SP), 83 ... Sounder.

Claims (21)

[Claims] 1. A portable electronic device having a wireless communication function, comprising a display unit housing provided with a display panel, wherein a plurality of antennas are provided on the display unit housing, and A portable electronic device comprising a diversity receiving circuit. 2. A portable electronic device having a display unit housing provided with a display panel, wherein the display unit housing includes an antenna and a ground circuit of the antenna, and the display panel is electrically operated. A portable electronic device comprising a shielding member for electrically shielding. 3. A portable electronic device having a display unit housing provided with a display panel, wherein the display unit housing includes an antenna and a ground circuit of the antenna, and the display panel is electrically connected. A portable electronic device comprising: a shielding member for electrically shielding; and a high-frequency module connected to the antenna with a circuit. 4. In a portable electronic device having a display housing provided with a display panel, the display housing has a main antenna, an auxiliary antenna, and a ground circuit of the main antenna. A portable electronic device comprising: a shield member for electrically shielding the display panel; and a high-frequency module connected to each of the antennas and having a diversity receiving circuit provided by each of the antennas. 5. A portable electronic device having a display unit housing provided with a display panel, wherein the display unit housing is provided with a rod-shaped main antenna protrudable from the housing. A first conductor serving as an antenna element disposed along the upper surface of the display unit housing and a second conductor serving as a ground portion disposed along a side surface in contact with the upper surface inside the unit housing. A portable electronic device comprising a built-in antenna. 6. A portable electronic device having a display housing provided with a display panel, wherein a rod-shaped main antenna protruding from the housing is provided at one corner of an upper surface of the display housing. A first conductor serving as an antenna element disposed along the top surface and a second conductor serving as a ground portion disposed along the side surface at the other corner of the top surface of the display unit housing. A portable electronic device comprising an antenna. 7. A portable electronic device having a display housing provided with a display panel, wherein: a rod-shaped antenna provided at one corner of an upper surface of the display housing; A built-in antenna which is provided in the other corner of the upper surface of the body and has a first conductor serving as an antenna element disposed along the upper surface and a second conductor serving as a ground portion disposed along the side surface; A diversity receiving circuit provided in the signal path of the above, a voice output means for processing received information received through the diversity receiving circuit, and outputting the received call information; a voice input means; and the voice input means Transmitting means for transmitting an audio signal input by at least one of the antennas. 8. A portable electronic device in which a display unit housing is rotatably provided on a device main body via a hinge mechanism, wherein: an antenna provided at a free end of the display unit housing; A display panel provided in the housing, a shield member for electrically shielding the display panel, an impedance matching circuit for connecting the antenna to a circuit, and a shield member for connecting a ground-side connection end of the impedance matching circuit to the shield member. And a circuit connecting means for connecting the circuit to the same potential in high frequency. 9. A portable electronic device in which a display unit housing is rotatably provided on a device main body via a hinge mechanism, wherein: an antenna provided at a free end of the display unit housing; A display panel provided in the display housing, and a shield member for electrically shielding the display panel; and a display member provided in the display housing to support the antenna and to be substantially perpendicular to an axial direction of the antenna. An impedance matching substrate having a circuit pattern forming surface and an impedance matching circuit formed on the surface portion; and circuit means for setting a ground circuit of the impedance matching substrate to the same potential as the shield member at a high frequency. A portable electronic device, comprising: 10. A portable electronic device in which a display unit housing is rotatably provided on a device main body via a hinge mechanism, wherein: an antenna provided at a free end of the display unit housing; A display panel provided on the display housing, and a shield member for electrically shielding the display panel; and a circuit pattern surface provided on the display housing and substantially perpendicular to the display panel. A portable electronic device comprising: an impedance matching substrate having a surface portion on which an impedance matching circuit is formed; and circuit means for setting a ground circuit of the impedance matching substrate to the same potential as the shield member at high frequency. machine. 11. The portable electronic device according to claim 1, wherein an antenna is arranged on the display housing so as to maximize a space diversity effect. machine. 12. An inverted-F type, comprising a metal piece, a flexible cable, or printed wiring on the display unit housing.
11. The portable electronic device according to claim 1, wherein a balun-type auxiliary antenna having strong noise resistance is built in, and space diversity is configured using the antenna. 12. 13. The portable electronic device according to claim 1, wherein a high-frequency module is mounted on the display housing. 14. The high-frequency module is provided with a transmission / reception circuit having a diversity reception function.
3. The portable electronic device according to 3. 15. The portable electronic device according to claim 5, wherein the built-in antenna has a second conductor longer than the first conductor. 16. The antenna according to claim 1, the antenna according to claim 2, the antenna according to claim 3, the main antenna according to claim 4, the main antenna according to claim 5, the main antenna according to claim 6, An extendable whip antenna or an omnidirectionally rotatable rod antenna is used for any one of the antenna according to claim 7, the antenna according to claim 8, the antenna according to claim 9, and the antenna according to claim 10. A portable electronic device characterized by the above-mentioned. 17. The antenna according to claim 1, the antenna according to claim 2, the antenna according to claim 3, the main antenna according to claim 4, the main antenna according to claim 5, or the claim 6. The main antenna according to claim 7, the antenna according to claim 7, the antenna according to claim 8, the antenna according to claim 9, or the antenna according to claim 10 is provided in the device housing when the device is used. A portable electronic device, wherein the portable electronic device is disposed on a display unit housing so as to be most distant from an operation unit and a main control circuit. 18. The shield member according to claim 8, wherein a ground-side connection end of the impedance matching circuit is directly attached to the shield member.
Or the portable electronic device according to 10. 19. The device according to claim 7, wherein a secondary battery, a main board provided with a main computer circuit including a CPU and a clock output circuit operable by the secondary battery, and a keyboard are mounted on the apparatus main body. 8 or 9 or 10
A portable electronic device as described. 20. The portable electronic device according to claim 7, wherein a digital cellular adapter and a telephone function maintenance connector are mounted on the device main body. 21. A maintenance 16-core connector having a check antenna terminal provided on a housing surface of the apparatus main body, wherein the maintenance 16-core connector is provided. The portable electronic device according to 9 or 10 or the description.