JP6777867B2 - Electronics - Google Patents

Description

The present invention relates to electronic devices.

Conventionally, the first housing, the first position where the display screen faces the first surface via a hinge on the first housing, and the second position where the display screen faces the side opposite to the first surface. A slot antenna is provided with a second housing rotatably supported between the two housings and a slot antenna provided in the second housing, and the second housing is positioned in the second position in the first housing. An electronic device is known in which a slot communicating with the slot of the above is provided (see, for example, Patent Document 1).

JP-A-2017-228982

In this type of electronic device, for example, it would be beneficial to obtain a new configuration in which deterioration of antenna characteristics that occurs when the second housing is used in the second position can be more easily suppressed.

Therefore, one of the problems of the present invention is to obtain an electronic device having a novel configuration in which deterioration of antenna characteristics that occurs when the second housing is used in the second position is more likely to be suppressed.

The electronic device according to the first aspect of the present invention has a first housing having a first surface and a display screen, and the display screen is connected to the first surface via a hinge in the first housing. A second housing rotatably supported between a first position facing the surface and a second position where the display screen faces the opposite side of the first surface, and the first housing and the second housing. Along the first antenna element provided in one of the housings and extending in the first direction along the display screen, and the first antenna element provided in the other of the first housing and the second housing. It had a non-feeding element which was arranged at a position where the first portion was electromagnetically coupled to the first antenna element in the first state where the second housing was positioned at the second position including the extended first portion. It is equipped with an antenna unit. In the first state, the first portion is arranged so as to overlap the first antenna element when viewed in the second direction intersecting the display screen, or on the side of the first antenna element opposite to the hinge. The antenna units are arranged so as to be offset from each other, and the antenna unit is connected via a grounding portion, a branching portion connected to the grounding portion, and the first antenna element and the branching portion, and has a frequency band different from that of the first antenna element. The second antenna element has a second antenna element corresponding to the above, and in the first state, the second antenna element is arranged so as to be offset from the first portion in the first direction when viewed in the second direction. The feeding element has a second portion extending from the end on the branch side of the first portion toward the hinge and grounded to the other, and in the first state, the second portion is the first. When viewed in two directions, it is arranged so as to overlap the branch portion.

Further, the electric length of the non-feeding element is shorter than the electric length of the first antenna element.

According to the above aspect of the present invention, it is possible to obtain an electronic device having a novel configuration in which deterioration of antenna characteristics that occurs when the second housing is used in the second position is more likely to be suppressed.

FIG. 1 is an exemplary perspective view of the electronic device of the embodiment from the front side, and is a view of a state in which the display housing is positioned in the closed position. FIG. 2 is an exemplary perspective view of the electronic device of the embodiment from the front side, and is a view of a state in which the display housing is positioned in the first unfolded position. FIG. 3 is an exemplary perspective view from the back side of the electronic device of the embodiment, and is a view showing a state in which the display housing is positioned at the second unfolded position. FIG. 4 is an exemplary perspective view from the back side of the electronic device of the embodiment, and is a view of a state in which the display housing is positioned at the third unfolded position. FIG. 5 is a sectional view taken along line VV of FIG. FIG. 6 is a plan view of the antenna unit of FIG. 4 with the front cover in the vicinity of the multi-band antenna removed. FIG. 7 is an exemplary perspective view of the multi-band antenna of FIG. FIG. 8 is an exemplary diagram showing the relationship between the radiation efficiency and frequency of the antenna unit when the second housing is used in the second position in the electronic device and the comparative example of the embodiment.

Hereinafter, exemplary embodiments of the present invention will be disclosed. The configurations of the embodiments shown below, as well as the actions and effects produced by the configurations, are examples. The present invention can also be realized by configurations other than those disclosed in the following embodiments. Further, according to the present invention, it is possible to obtain at least one of various effects (including derivative effects) obtained by the configuration.

In this specification, the ordinal number is used only for distinguishing parts, members, parts, positions, directions, etc., and does not indicate the order or priority.

[Embodiment]
FIG. 1 is a perspective view from the front side of the electronic device 1, showing a state in which the display housing 3 is located at the closed position P0. FIG. 2 is a perspective view from the front side of the electronic device 1, and is a view showing a state in which the display housing 3 is located at the first deployment position P1. In the following description, for convenience, three directions orthogonal to each other are defined. The X direction is along the depth (front-back direction) of the base housing 2, the Y direction is along the width of the base housing 2 (horizontal direction, longitudinal direction), and the Z direction is the thickness of the base housing 2 (up and down). Along the direction). Further, in the following description, the X direction is also referred to as the rear, the opposite direction of the X direction is also referred to as the front, the Y direction is also referred to as the left, the opposite direction of the Y direction is also referred to as the right, the Z direction is upward, and the opposite of the Z direction. The direction may also be referred to as downward.

As shown in FIGS. 1 and 2, the electronic device 1 is configured as, for example, a clamshell type (notebook type) personal computer, and includes a base housing 2 and a display housing 3. .. A keyboard 4 (input device), a substrate (not shown), and the like are housed in the base housing 2, and an antenna unit 5, a display unit 6, and the like are housed in the display housing 3. The base housing 2 is an example of the first housing, and the display housing 3 is an example of the second housing. The electronic device 1 is not limited to this example, and for example, a display housing 3 such as a mobile phone, a smartphone, an electronic organizer, an electronic dictionary, or a game machine can rotate to a base housing 2 via a hinge 7. It can be configured as various electronic devices 1 connected to.

The base housing 2 has, for example, an upper surface 2a1 on which the keyboard 4 is exposed and a lower surface 2b1 facing the side opposite to the upper surface 2a1. The keyboard 4 is supported by the base housing 2 so that it can be operated from above. Further, in the base housing 2, a substrate on which a plurality of electronic components such as a CPU (Central Processing Unit), a ROM (Read Only Memory), and a RAM (Random Access Memory) are mounted is provided. At least a part of the control circuit of the electronic device 1 is formed by the wiring in the substrate and these plurality of electronic components.

The display housing 3 has, for example, a front surface 3a1 on which the display screen 6a of the display unit 6 is exposed, and a rear surface 3b1 facing the side opposite to the front surface 3a1. The display unit 6 is supported by the display housing 3 so that the display screen 6a can be seen from the front. Further, a part of the front surface 3a1 and the display screen 6a are covered with a transparent portion of the touch panel 9.

The antenna unit 5 is provided, for example, at two corners of the upper end portion 3j of the display housing 3. Each of the antenna units 5 is electrically connected to the communication chip of the substrate via a cable. The antenna unit 5 is an example of a diversity antenna. According to the present embodiment, with respect to the same radio signal received by a plurality of antenna units 5, the signal of the antenna unit 5 having an excellent radio wave condition is preferentially used, or the received signals are combined to remove noise. By doing so, it is possible to improve the quality and reliability of communication. The antenna unit 5 is not limited to this example, and may be provided only in one corner, for example.

FIG. 3 is a perspective view from the back side of the electronic device 1, showing a state in which the display housing 3 is located at the second deployment position P2. FIG. 4 is a perspective view from the back side of the electronic device 1, showing a state in which the display housing 3 is located at the third deployment position P3. In the present embodiment, the electronic device 1 is used in a plurality of modes such as the notebook mode shown in FIG. 2, the tent mode (stand mode) shown in FIG. 3, and the slate mode (tablet mode) shown in FIG. It is configured to be possible.

Specifically, the display housing 3 is rotatably supported by the base housing 2 via a hinge 7 having two rotation centers Ax1 and Ax2 (rotational axes) extending along the Y direction. The display housing 3 rotates around the rotation centers Ax1 and Ax2 of the hinges to form a closed position P0 (FIG. 1), a first unfolded position P1 (FIG. 2), and a second unfolded position P2 (FIG. 3). And the third deployment position P3 (FIG. 4).

As shown in FIG. 1, when the display housing 3 is positioned at the closed position P0, the upper surface 2a1 and the keyboard 4 of the base housing 2, the front surface 3a1 of the display housing 3, and the display screen 6a of the display unit 6 are displayed. And face each other. Therefore, at the closed position P0, the keyboard 4, the touch panel 9, and the like are hidden by the base housing 2 and the display housing 3, and are therefore inoperable. The closed position P0 is an example of the first position, and the upper surface 2a1 is an example of the first surface. Further, the closed position P0 is also referred to as an initial position, a first folding position, or the like.

As shown in FIG. 2, when the display housing 3 is positioned at the first deployment position P1, the upper surface 2a1 and the keyboard 4 do not face the front surface 3a1 and the display screen 6a, and the upper surface 2a1 and the keyboard 4 The front surface 3a1 and the display screen 6a are exposed. The rotation angle of the display housing 3 with respect to the base housing 2 at the first deployment position P1 is, for example, 90 ° to 170 °. At the first deployment position P1, it is used as a so-called notebook mode, and the operation is performed by the keyboard 4 in a state where the base housing 2 is placed on a mounting portion such as a desk or a table (not shown). The first deployment position P1 is also referred to as a first use position or the like.

As shown in FIG. 3, when the display housing 3 is positioned at the second deployment position P2, the upper surface 2a1 and the keyboard 4 and the front surface 3a1 and the display screen 6a face each other. The rotation angle of the display housing 3 with respect to the base housing 2 at the second deployment position P2 is, for example, 270 ° to 350 °. The second deployment position P2 is used as a so-called tent mode (stand mode), and is operated by the touch panel 9 with the base housing 2 and the display housing 3 standing on a mounting portion (not shown). The second deployment position P2 is also referred to as a second use position or the like.

Further, as shown in FIG. 4, even when the display housing 3 is positioned at the third deployment position P3, the upper surface 2a1 and the keyboard 4 and the front surface 3a1 and the display screen 6a face each other. The rotation angle of the display housing 3 with respect to the base housing 2 at the third deployment position P3 is 360 °. At the third deployment position P3, it is used as a so-called slate mode (tablet mode), and the touch panel is in a state where the base housing 2 is mounted on a mounting portion (not shown) or a state in which the base housing 2 is lifted from the mounting portion. The operation is performed by 9. The third deployment position P3 is an example of the second position.

The third deployment position P3 (second position) is not limited to this example, and for example, the upper surface 2a1 of the base housing 2 (FIG. 2) is provided by a hinge having two rotation centers that intersect (orthogonally) with each other. The display screen 6a of the display housing 3 may be overlapped on the side (see) so as to face the side opposite to the upper surface 2a1. The third unfolding position P3 is also referred to as a third used position, a second folding position, or the like.

As shown in FIGS. 1 to 4, the display housing 3 is formed in a rectangular parallelepiped shape that is flat in one direction (Z direction in FIG. 1), for example. The display housing 3 has a front wall 3a, a rear wall 3b, a plurality of side walls 3c to 3f, and the like. The front wall 3a includes the front surface 3a1 and the rear wall 3b includes the rear surface 3b1. The front wall 3a is formed in the shape of a square frame, and the rear wall 3b is formed in the shape of a square plate.

As shown in FIG. 2, the side wall 3c and the side wall 3e constitute a lower end portion 3h and an upper end portion 3j of the display housing 3, respectively. The lower end portion 3h is adjacent (close) to the rotation centers Ax1 and Ax2 of the hinge 7. The upper end portion 3j is separated from the rotation center Ax1 and Ax2 of the hinge 7 by the lower end portion 3h. Further, the side wall 3d and the side wall 3f form the left end portion 3i and the right end portion 3k of the display housing 3, respectively.

Further, the display housing 3 is configured by combining a plurality of parts (divided bodies). Specifically, the display housing 3 has, for example, a front cover 31 and a rear cover 32. The front cover 31 includes a front wall 3a and a part of each of the side walls 3c to 3f. The rear cover 32 includes a rear wall 3b and a part of each of the side walls 3c to 3f. The front cover 31 and the rear cover 32 are connected to each other by claws, screws, or the like.

The base housing 2 is, for example, configured in a rectangular parallelepiped box shape that is flat in the Z direction. The base housing 2 has a plurality of wall portions such as an upper wall 2a, a lower wall 2b, a front wall 2c, a left wall 2d, a rear wall 2e, and a right wall 2f. The front wall 2c, the left wall 2d, the rear wall 2e, and the right wall 2f are also referred to as a side wall, a peripheral wall, a standing wall, and the like.

Both the upper wall 2a and the lower wall 2b extend along a direction (XY plane) orthogonal to the Z direction, and are provided parallel to each other at intervals in the Z direction. The upper wall 2a includes the upper surface 2a1 and the lower wall 2b includes the lower surface 2b1. The lower surface 2b1 is provided with a plurality of support portions 2p (see FIG. 3) that support the base housing 2 in a state of being separated from a mounting portion (not shown). The support portion 2p is also referred to as a leg, a rubber leg, or the like.

Both the front wall 2c and the rear wall 2e extend along a direction (YZ plane) orthogonal to the X direction, and are provided parallel to each other at intervals in the X direction. The front wall 2c extends between the ends of the upper wall 2a and the lower wall 2b in the opposite direction in the X direction, and the rear wall 2e extends between the ends of the upper wall 2a and the lower wall 2b in the X direction. ..

The front wall 2c and the rear wall 2e form the front end portion 2h and the rear end portion 2j of the base housing 2, respectively. The front end portion 2h is separated from the rotation centers Ax1 and Ax2 of the hinge 7. The rear end portion 2j is adjacent (closer) to the rotation centers Ax1 and Ax2 of the hinge 7 than the front end portion 2h.

Both the left wall 2d and the right wall 2f extend along a direction (XZ plane) orthogonal to the Y direction, and are provided parallel to each other at intervals in the Y direction. The left wall 2d extends between the ends of the upper wall 2a and the lower wall 2b in the Y direction, and the right wall 2f extends between the ends of the upper wall 2a and the lower wall 2b in the opposite direction in the Y direction. .. The left wall 2d and the right wall 2f form the left end portion 2i and the right end portion 2k of the base housing 2, respectively.

Further, the base housing 2 is configured by combining a plurality of parts (divided bodies). Specifically, the base housing 2 has, for example, a top cover 21 and a bottom cover 22. The top cover 21 includes an upper wall 2a and a part of each of the front wall 2c, the left wall 2d, the rear wall 2e, and the right wall 2f. The bottom cover 22 includes a lower wall 2b and a part of each of the front wall 2c, the left wall 2d, the rear wall 2e, and the right wall 2f. The top cover 21 and the bottom cover 22 are connected to each other by claws, screws, or the like.

FIG. 5 is a sectional view taken along line VV of FIG. As shown in FIG. 5, the rear cover 32 of the display housing 3 has a first member 32T and a second member 32U. The first member 32T is made of a synthetic resin material, and the second member 32U is made of a metal material such as a magnesium alloy. The first member 32T and the second member 32U are manufactured by, for example, insert molding (hybrid molding) or the like, and are joined (integrated) with each other.

Further, the front cover 31 of the display housing 3 has a first member 31A and a second member 31B. The first member 31A is made of a synthetic resin material, and the second member 31B is made of rubber, an elastomer or the like. The second member 31B protrudes from the first member 31A and the touch panel 9 on the side opposite to the rear wall 3b. This prevents the first member 31A and the touch panel 9 from coming into contact with the base housing 2 when the display housing 3 is located at the closed position P0 (see FIG. 1).

Further, the first members 31A and 32T overlap the first antenna element 51 and the second antenna element 52 (see FIGS. 6 and 7) of the antenna unit 5 in the thickness direction (Z direction in FIG. 5) of the display housing 3. Is located. Since the first members 31A and 32T are made of a synthetic resin material, the first antenna element 51 and the second antenna element 52 can transmit and receive radio waves via the first members 31A and 32T. The antenna unit 5 is for, for example, a wireless WAN (Wide Area Network). The antenna unit 5 may be other than the one for wireless WAN.

Further, as shown in FIG. 5, the top cover 21 and the bottom cover 22 of the base housing 2 also have first members 21F and 22F and second members 21R and 22R, respectively. The materials of the first members 21F and 22F and the second members 21R and 22R are different from each other. The first material constituting the first members 21F and 22F is a synthetic resin material, and the second material constituting the second members 21R and 22R is a metal material such as a magnesium alloy. The first members 21F and 22F and the second members 21R and 22R are manufactured by, for example, insert molding (hybrid molding) and are joined (integrated) with each other.

The first members 21F and 22F and the second members 21R and 22R are arranged in the X direction, respectively. In other words, the second members 21R and 22R are located farther from the front end portion 2h than the first members 21F and 22F. In the present embodiment, when the display housing 3 is positioned at the third deployment position P3, the first members 21F and 22F are positioned so as to overlap the first antenna element 51 and the second antenna element 52 in the Z direction. .. As a result, even when the display housing 3 is used at the third deployment position P3, the first antenna element 51 and the second antenna element 52 use the first members 21F and 22F made of a synthetic resin material. Radio waves can be transmitted and received via.

Next, the antenna unit 5 will be described in more detail. FIG. 6 is a plan view of the antenna unit 5 of FIG. 4 with the front cover 31 in the vicinity of the multi-band antenna 50 removed. FIG. 7 is a perspective view of the multi-band antenna 50 of FIG. As shown in FIGS. 6 and 7, the antenna unit 5 includes, for example, a multi-band antenna 50 and a non-feeding element 10.

The multi-band antenna 50 and the non-feeding element 10 each extend in the Y direction, and at least a part thereof is arranged so as to overlap in the Z direction. In the present embodiment, the multi-band antenna 50 is housed in the display housing 3, and the non-feeding element 10 is housed in the base housing 2 (see FIG. 5). The Y direction is an example of the first direction, and the Z direction is an example of the second direction.

The antenna unit 5 is not limited to this example, and for example, the multi-band antenna 50 may be provided on the base housing 2 side, and the non-feeding element 10 may be provided on the display housing 3 side. Further, the non-feeding element 10 may be provided, for example, by being exposed on the outer surface side of the first members 22F and 32T in the base housing 2 or the display housing 3. In this case, the non-feeding element 10 may be fixed to the first members 22F, 32T with tape or the like, or may be formed by printing or the like.

As shown in FIG. 7, the multi-band antenna 50 has, for example, a first antenna element 51, a second antenna element 52, a branch portion 53, a ground portion 54, and a support member 55. .. The support member 55 has a predetermined thickness in the Z direction, extends along the X and Y directions, and has a strip-like shape elongated in the Y direction. The support member 55 is made of a synthetic resin material.

The first antenna element 51 and the second antenna element 52 are supported by the front surface 55a and the side surface 55b of the support member 55. The first antenna element 51 and the second antenna element 52 each extend in the Y direction along the support member 55 and are connected to each other via a branch portion 53. The first antenna element 51 is located in the direction opposite to the branch portion 53 in the Y direction, and the second antenna element 52 is located in the Y direction with respect to the branch portion 53. In other words, the first antenna element 51 extends from the branch portion 53 in the opposite direction in the Y direction, and the second antenna element 52 extends from the branch portion 53 in the Y direction.

The first antenna element 51 corresponds to the first frequency band, and the second antenna element 52 corresponds to a second frequency band different from the first frequency band. The first frequency band is, for example, an 800 to 900 MHz band, and the second frequency band is, for example, a 1.7 GHz band or a 2 GHz band. The first antenna element 51 and the second antenna element 52 are fixed to the side surface 55b of the support member 55 by a coupling member 56 such as heat welding or screws.

The branch portion 53 is supported by the side surface 55b of the support member 55. The branch portion 53 has a predetermined width in the Y direction and extends in the X direction along the side surface 55b. One end of the branch 53 in the X direction is connected to the grounding portion 54, and the other end in the X direction is connected to the first antenna element 51 and the second antenna element 52. The first antenna element 51, the second antenna element 52, the branch portion 53, and the ground portion 54 are composed of one or a plurality of metal members.

The ground contact portion 54 is formed in a plate shape having a plurality of bent portions, and extends in the X direction from the support member 55. The ground contact portion 54 is fixed to the second member 32U with aluminum tape or the like in a state of being in contact with the inner surface of the second member 32U in the rear cover 32 (see FIG. 5). As a result, the first antenna element 51, the second antenna element 52, and the second member 32U are electrically connected via the grounding portion 54, and the second member 32U functions as a ground member of the multi-band antenna 50. The multi-band antenna 50 is composed of, for example, an inverted F antenna or the like.

As shown in FIG. 6, the non-feeding element 10 has, for example, a first portion 10a and a second portion 10b. The first portion 10a is elongated in the Y direction along the first antenna element 51. The second portion 10b is connected to one end of the first portion 10a in the Y direction, that is, the end on the branch 53 side. The second portion 10b extends from the first portion 10a in the X direction, that is, closer to the hinge 7 (see FIG. 4). The non-feeding element 10 is formed in a substantially L shape by the first portion 10a and the second portion 10b connected to each other.

Further, the second portion 10b is fixed to the second member 22R with an aluminum tape or the like in a state of being in contact with the inner surface of the second member 22R in the bottom cover 22 (see FIG. 5). As a result, the first portion 10a and the second member 22R are electrically connected via the second portion 10b, and the second member 22R functions as a ground member of the non-feeding element 10. The non-feeding element 10 is made of a metal material such as brass.

Then, in the present embodiment, in a state where the display housing 3 is positioned at the third deployment position P3 (see FIG. 6), the first portion 10a is arranged so as to overlap the first antenna element 51 when viewed in the Z direction. ing. That is, the first portion 10a is arranged at a position where the first antenna element 51 resonates (current flows) due to the radio wave, in other words, at a position where the first antenna element 51 is electromagnetically coupled. As a result, the first portion 10a functions as a part of the first antenna element 51.

The first portion 10a is not limited to this example, and may be a position where the first antenna element 51 is electromagnetically coupled to the first antenna element 51. It may be arranged so as to be offset in the direction. In the present embodiment, the distance D (see FIG. 5) between the first antenna element 51 and the first portion 10a is set within 0.1 wavelength.

Further, in the present embodiment, when the display housing 3 is positioned at the third deployment position P3 (see FIG. 6), the second antenna element 52 is displaced from the first portion 10a in the Y direction when viewed in the Z direction. The second portion 10b is arranged so as to overlap the branch portion 53. As a result, the influence of the first portion 10a on the second antenna element 52 and the influence of the second portion 10b on the first antenna element 51 and the second antenna element 52 are suppressed.

Further, in the present embodiment, the electric length of the non-feeding element 10 is set shorter than the electric length of the first antenna element 51. Specifically, the electric length of the non-feeding element 10 is set to about 1/1.25 of the electric length (1/4 wavelength) of the first antenna element 51. As a result, the non-feeding element 10 is set to resonate at a frequency approximately 1.25 times the resonance frequency of the first antenna element 51.

FIG. 8 is a diagram showing the relationship between the radiation efficiency and the frequency of the antenna unit 5 when the display housing 3 is used at the third deployment position P3 in the electronic device 1 and the comparative example of the embodiment. In FIG. 8, the broken line shows the characteristics in the comparative example having only the first antenna element 51 without the non-feeding element 10, and the solid line shows the present embodiment having the non-feeding element 10 and the first antenna element 51. The characteristics of the electronic device 1 are shown.

As shown by the broken line in FIG. 8, in the comparative example, the radiation efficiency is lower than the reference value in the band where the frequency is relatively high in the first frequency band. This is because the bandwidth of the first antenna element 51 is narrower when it is used at the third deployment position P3 than when it is used at the first deployment position P1 due to the influence of the base housing 2 side and the like. This is because the resonance frequency shifts to a lower value.

On the other hand, as shown by the solid line in FIG. 8, in the present embodiment in which the non-feeding element 10 is added to the comparative example, a band having a relatively high frequency in the first frequency band, that is, a reference in the comparative example. The radiation efficiency in the band below the value exceeds the standard value and is improved. As described above, according to the present embodiment, the display housing 3 is used at the third deployment position P3 by utilizing the resonance of the non-feeding element 10 electromagnetically coupled to the first antenna element 51. Deterioration of antenna characteristics can be suppressed.

As described above, in the present embodiment, the electronic device 1 includes the first antenna element 51 provided in the display housing 3 (second housing) and extending in the Y direction (first direction), and the base housing 2 ( The first portion 10a is the first in a state where the display housing 3 is positioned at the third deployment position P3 (second position) including the first portion 10a provided in the first housing) and extending along the first antenna element 51. The antenna unit 5 includes a non-feeding element 10 arranged at a position where it is electromagnetically coupled to the antenna element 51.

According to such a configuration, for example, by adjusting the resonance frequency of the non-feeding element 10, it is possible to supplement the radiation efficiency of a desired frequency band below the reference value in the first frequency band. Therefore, for example, deterioration of the antenna characteristics that occurs when the display housing 3 is used at the third deployment position P3 is more likely to be suppressed. Further, for example, the non-feeding element 10 can suppress the deterioration of the antenna characteristics without enlarging the size of the multi-band antenna 50 and thus the size of the display housing 3.

Further, in the present embodiment, the first portion 10a is arranged so as to overlap the first antenna element 51 when viewed in the Z direction (second direction) in a state where the display housing 3 is located at the third deployment position P3. ing.

According to such a configuration, for example, as compared with the case where the first portion 10a is displaced from the hinge 7 side of the first antenna element 51, the first portion 10a and the grounded portion of the non-feeding element 10 (second portion 10b). Since the distance to the antenna unit 5 can be secured longer, the deterioration of the communication performance of the antenna unit 5 is more likely to be suppressed.

Further, in the present embodiment, the antenna unit 5 has a second antenna element 52 which is connected to the first antenna element 51 via a branch portion 53 and corresponds to a frequency band different from that of the first antenna element 51. The two antenna elements 52 are arranged so as to be offset from the first portion 10a in the Y direction when viewed in the Z direction in a state where the display housing 3 is located at the third deployment position P3.

According to such a configuration, for example, the influence of the first portion 10a on the second antenna element 52 can be suppressed.

Further, in the present embodiment, the non-feeding element 10 has a second portion 10b that extends from the end portion of the first portion 10a on the branch portion 53 side so as to approach the hinge 7 and is grounded to the base housing 2. ..

According to such a configuration, for example, the second portion 10b allows the non-feeding element 10 to run in parallel in the same direction (forward direction) as the extending direction of the first antenna element 51, so that the antenna characteristics deteriorate. Can be suppressed. Further, for example, when the second portion 10b is arranged so as to overlap the branch portion 53 when viewed in the Z direction, the influence of the second portion 10b on the first antenna element 51 and the second antenna element 52 can be suppressed. ..

Further, in the present embodiment, the electric length of the non-feeding element 10 is shorter than the electric length of the first antenna element 51.

According to such a configuration, for example, the non-feeding element 10 can improve the desired radiation efficiency below the reference value in a frequency band higher than the resonance frequency of the first antenna element 51.

Although the embodiments of the present invention have been exemplified above, the above-described embodiment is an example and is not intended to limit the scope of the invention. The above-described embodiment can be implemented in various other forms, and various omissions, replacements, combinations, and changes can be made without departing from the gist of the invention. In addition, specifications such as each configuration and shape (structure, type, direction, type, size, length, width, thickness, height, number, arrangement, position, material, etc.) are changed as appropriate. Can be carried out.

1 ... Electronic device, 2 ... Base housing (first housing), 2a1 ... Top surface (first surface), 3 ... Display housing (second housing), 5 ... Antenna unit, 6a ... Display screen, 7 ... Hinge, 10 ... No feeding element, 10a ... First part, 10b ... Second part, 51 ... First antenna element, 52 ... Second antenna element, 53 ... Branch part, P0 ... Closed position (first position), P3 ... Third deployment position (second position), Y ... first direction, Z ... second direction.

Claims (2)

The first housing with the first surface and
A first position having a display screen and the display screen facing the first surface and a second position where the display screen faces the side opposite to the first surface via a hinge on the first housing. And the second housing, which is rotatably supported between,
A first antenna element provided in one of the first housing and the second housing and extending in the first direction along the display screen, and the other of the first housing and the second housing. In the first state in which the second housing is located at the second position including the first portion extending along the first antenna element, the first portion is arranged at a position where it is electromagnetically coupled to the first antenna element. An antenna unit with a non-feeding element and
Equipped with a,
In the first state, the first portion is arranged so as to overlap the first antenna element when viewed in the second direction intersecting the display screen, or on the side of the first antenna element opposite to the hinge. Arranged offset,
The antenna unit is connected via a grounding portion, a branching portion connected to the grounding portion, and the first antenna element and the branching portion, and corresponds to a frequency band different from that of the first antenna element. With an antenna element,
In the first state, the second antenna element is arranged so as to be offset from the first portion in the first direction when viewed in the second direction.
The non-feeding element has a second portion that extends from the end on the branch side of the first portion toward the hinge and is grounded to the other.
In the first state, the second portion is arranged so as to overlap the branch portion when viewed in the second direction.
Electronics. The electronic device according to claim 1 , wherein the electric length of the non-feeding element is shorter than the electric length of the first antenna element.

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