JP2017228982A - Electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic apparatus comprising a slot antenna capable of suppressing reduction of an antenna gain of the slot antenna even when the electronic apparatus is used in various uses.SOLUTION: An electronic apparatus 1 comprises: a main body housing 10 which is covered by a base cover 12 of which a lower surface is formed by a conductor and a keyboard cover 11 of which an upper surface is formed by a keyboard device 13 and a dielectric body; and a display housing 20 that is coupled to the main body housing 10 through a hinge device 30, is covered by a display rear cover 22 of which the upper surface is formed by the conductor and a bezel 21 of which the lower surface is formed by the display device 23 and the dielectric body, and in which a slot antenna A1 is formed in a bezel region of the display rear cover 22. The base cover 12 provides a slot 15 at a position opposite to the slot 35 of the slot antenna A1 when the display rear cover 22 of the display housing 20 is overlapped to the lower surface and the upper surface of the main body housing 10.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an electronic device including a slot antenna.

  Conventionally, there is an electronic apparatus provided with a slot antenna.

  Provided is an electronic device including a slot antenna that can suppress a reduction in antenna gain of the slot antenna even when the electronic device is used in various usage forms.

  An electronic apparatus according to the present disclosure includes a main body case covered with a base cover whose bottom surface is made of a conductor and a keyboard cover whose upper surface is made of a keyboard and a dielectric, and is connected to the main body case via a hinge A display rear cover whose upper surface is formed of a conductor and a lower surface of which is covered with a display device and a bezel formed of a dielectric, and a display housing in which a slot antenna is formed in the bezel region of the display rear cover. The base cover is provided with a slot at a position opposite to the slot of the slot antenna when the display rear cover of the display housing is overlapped with the lower surface or the upper surface of the main body housing.

  ADVANTAGE OF THE INVENTION According to this invention, even when it is a case where an electronic device is used by various usage forms, the electronic device provided with the slot antenna which can suppress reduction of the antenna gain of a slot antenna is provided.

FIG. 1 is a diagram illustrating an external configuration when an electronic device is in a notebook PC mode. FIG. 2 is a diagram illustrating an external configuration when the electronic device is in the tablet PC mode. FIG. 3 is a perspective view of a cross section taken along line AA of the electronic device shown in FIG. FIG. 4 is a diagram illustrating a configuration of a power feeding unit of a slot antenna excited by a monopole antenna. FIG. 5 is a diagram illustrating a configuration of the power feeding unit of the slot antenna when the slot antenna is directly excited. FIG. 6 shows the positional relationship between the slot of the slot antenna and the slot arranged corresponding to the slot in the electronic device in which the display housing can be rotated by one hinge and the display rear cover can be superimposed on the keyboard side of the upper surface of the main body housing. FIG. FIG. 7 is a diagram showing the positional relationship between the slots of the slot antenna and the slots arranged corresponding to the slots in an electronic apparatus provided with a plurality of slot antennas. FIG. 8 is a diagram showing the relationship between the electrical length of the slot of the slot antenna and the electrical length of the slot disposed opposite to the slot.

  Hereinafter, embodiments of an electronic apparatus according to the present disclosure will be described with reference to the drawings. Note that the present disclosure is not limited to the following embodiment. In addition, constituent elements in the following embodiments include those that can be easily replaced by those skilled in the art or those that are substantially the same.

  As shown in FIG. 1, the electronic device 1 includes a main body housing 10, a display housing 20, and left and right hinge devices 30. In the following description, the display housing 20 and the main body housing 10 on the hinge device 30 side of the display housing 20 and the main body housing 10 are used as a reference when the display housing 20 is closed with respect to the main body housing 10 from the state shown in FIG. The description will be made by referring to the end as the rear end (rear), the opposite end as the front end (front), the thickness direction as the up and down direction, and the width direction as the left and right direction.

  By providing the hinge device 30, the electronic device 1 can be suitably used as a notebook PC in a state where the display housing 20 is rotated to an angular position of about 90 degrees with respect to the main body housing 10 (see FIG. 1). ), A so-called convertible PC that can be suitably used as a tablet PC in a state in which the display casing 20 is rotated to a position of 360 degrees with respect to the main body casing 10 and inverted. However, the present disclosure can be applied to an electronic device in which two housings can be folded via a hinge device, such as a mobile phone, a smartphone, or an electronic notebook, in addition to the PC.

  As shown in FIG. 1, the main body housing 10 is formed in a flat plate shape and a box shape. The main body housing 10 is connected to the display housing 20 by a hinge device 30 provided at the rear end thereof. An input means such as a keyboard device 13 is provided on the upper surface of the main body housing 10 using a keyboard cover 11 formed of a dielectric, and a substrate, an arithmetic device, a memory, etc. (not shown) are provided inside the main body housing 10. Various electronic parts are provided. The lower surface of the main body housing 10 is covered with a base cover 12 formed of a conductor such as metal. The keyboard device 13 may be configured by, for example, a so-called on-screen keyboard (On Screen Keyboard) that is displayed on a touch panel display (not shown) provided on the upper surface of the main body housing 10.

  As shown in FIG. 1, the display housing 20 is formed in a flat plate shape that is thinner than the main body housing 10. The display housing 20 is connected to the main body housing 10 by a hinge device 30 provided at the rear end thereof. Further, a display device such as a display device 23 is provided on the lower surface of the display housing 20 by using a bezel 21 formed of a dielectric. The upper surface of the display housing 20 is covered with a display rear cover 22 formed of a conductor such as metal. The display device 23 is constituted by a touch panel type liquid crystal display device, for example.

  The hinge device 30 connects the two housings composed of the main body housing 10 and the display housing 20 so as to be openable and closable. Here, as shown in FIG. 1, the hinge device 30 is configured as a pair of left and right, and is disposed outside the display device 21. The hinge device 30 can rotate the display housing 20 with respect to the main body housing 10 from the 0 degree position to the 360 degree position. When the display housing 20 is at an angle position of about 90 degrees with respect to the main body housing 10, it is used as a notebook PC in the notebook PC mode, and the display housing 20 is rotated to a 360 degree position with respect to the main body housing. When moved, it is used as a tablet PC in the tablet PC mode.

(Configuration of slot antenna and slot for resonance)
As shown in FIGS. 1 and 2, a slot antenna A <b> 1 is formed at the end of the display rear cover 22. Specifically, the slot 35 of the slot antenna A1 is formed at a location facing the bezel 21 on the lower surface. As shown in FIG. 2, the base cover 12 has a slot antenna A1 in the tablet PC mode in which the display housing 20 is rotated 360 degrees with respect to the main body housing 10 and the display housing 20 is folded. A slot 15 is formed at a position facing the slot 35. In the tablet PC mode, resonance occurs when the slot 35 of the slot antenna A1 and the slot 15 of the base cover 12 come close to each other.

  FIG. 3 is a perspective view of a cross section taken along line AA showing the arrangement of the slot 35 of the slot antenna A1 and the slot 15 of the base cover 12 in the tablet PC mode. As shown in FIG. 3, the slot 35 and the slot 15 have the same shape, and the openings are overlapped in the vertical direction.

  The slot 15 of the base cover 12 is provided to ensure antenna gain. When the slot 15 is not provided, in the tablet PC mode shown in FIG. 2, the radiation of radio waves is hindered due to the influence of the base cover 12 formed of a conductor such as metal, and the antenna gain is lowered. On the other hand, in the present disclosure, as shown in FIG. 3, since the slot 15 is formed at the position facing the slot 35 of the slot antenna A1 in the base cover 12, a decrease in antenna gain can be avoided.

  In order to prevent the antenna gain of the slot antenna A1 from being lowered in the tablet PC mode, the slot antenna A1 is offset outward so that the slot antenna A1 does not overlap the base cover 12, and the slot antenna A1 is It is conceivable that the display housing 20 protrudes. In this case, the presence of the protruding slot antenna A1 is obstructive in operation, and looks bad in design. Furthermore, it is conceivable that the portion of the base cover 12 facing the slot antenna A1 is formed of a dielectric, but if the end portion is formed of a dielectric, the strength of the electronic device 1 is deteriorated. In the present disclosure, it is only necessary to form the slot 15 at a position opposite to the slot antenna A1, and it is possible to suppress the reduction of the antenna gain of the slot antenna A1 while maintaining the strength with a simple configuration.

  FIG. 4 shows an example of a specific structure of the slot antenna A1. As shown in FIG. 4, in the present disclosure, a power feeding unit 40 that excites the slot antenna A1 is provided in the slot 35 of the slot antenna A1. In the power feeding unit 40, a monopole antenna 42 is disposed in the slot 35. A grounding portion 43 is connected to the monopole antenna 42. The monopole antenna 42 and the grounding portion 43 are formed on a substrate 41 using a printed circuit board (PCB) or a flexible substrate (FPC). The monopole antenna 42 on the substrate 41 is disposed in the slot 35. The slot antenna A1 is excited by the excitation of the monopole antenna 42. The monopole antenna 42 is an example of a feeding antenna for exciting the slot antenna A1, and may be another feeding antenna. For example, a dipole antenna may be used.

  In addition, it is good also as a structure which uses the electric power feeding part 50 directly excited in the center vicinity of the longitudinal direction of the slot 35 not using a power feeding antenna like slot antenna B1 shown in FIG.

  The slots 35 and 15 are preferably not filled with a cavity but filled with a dielectric. When the dielectric is filled, the electrical lengths of the slot 35 and the slot 15 of the slot antenna A1 can be shortened, and the body housing 10 and the display housing 20 can be protected from dust and water.

  In addition, the electronic device 1 described above is a tablet PC mode in which the display rear cover 22 and the base cover 12 face each other and overlap each other. For example, as illustrated in FIG. 6, the electronic device 2 in which the main body housing 10 and the display housing 20 are connected to each other by a single hinge device 31 at the center of each rear end portion is also provided with the above-described slot. The configuration of the slot 35 and the slot 15 of the antenna A1 can be applied.

  The hinge device 31 of the electronic device 2 supports the main body housing 10 and the display housing 20 so as to be rotatable in a direction to open and close each other. The electronic device 2 can rotate the display housing 20 at least 180 degrees around the hinge device 31 with the display housing 20 opened with respect to the main body housing 10. In the tablet PC mode, the slot 35 of the slot antenna A1 rotates the display housing 20 so that the display rear cover 22 overlaps the keyboard device 13 and the keyboard cover 11 side. As shown in FIG. 6, the slot 15 is arranged at a position where the slot 35 of the slot antenna A1 faces.

  In the above-described disclosure, the electronic devices 1 and 2 provided with one slot antenna A1 have been described. However, the present invention is not limited thereto, and the electronic device 3 provided with two or more slot antennas A1a and A1b is also described above. The configuration of the slot 35 and the slot 15 of the slot antenna A1 can be applied. The electronic device 3 shown in FIG. 7 is provided with slots 35a and 35b corresponding to the two slot antennas A1a and A1b in the electronic device 1 shown in FIG. 1, and the base cover 12 facing each slot 35a and 35b. Slots 15a and 15b are respectively formed at the positions. When two or more slot antennas A1a and A1b are provided, the resonance lengths of the slots 35a and 35b of the slot antennas A1a and A1b can be different, and a plurality of wireless communication units can be provided. . In this case, the slots 15a and 15b resonate with the slots 35a and 35b of the slot antennas A1a and A1b.

  Further, as shown in FIG. 8, the electrical length of the slot 15 may be the same as or different from the electrical length of the slot 35 of the slot antenna A1. In FIG. 8B, the electrical lengths of the slot 35 and the slot 15 of the slot antenna A1 are both the same at λ / 2. In FIG. 8C, the electrical length (λ) of the slot 15 ′ is twice the electrical length (λ / 2) of the slot 35 of the slot antenna A1. In FIG. 8D, the electrical length (λ / 4) of the slot 15 ″ is ½ times the electrical length (λ / 2) of the slot 35 of the slot antenna A1. Basically, the electrical length of the slot for resonance may be an integral multiple of 1/4 of the wavelength λ used for the slot antenna A1.

  In the above description, the example in which the keyboard cover 11 is formed of a dielectric has been described. Here, an example in which the keyboard cover 11 is formed of a conductor will be described. When the keyboard cover 11 is formed of a conductor, it is preferable to provide a slot in the keyboard cover 11 at a location facing the slot 15 of the base cover 12. The opening area of the slot of the keyboard cover 11 is preferably larger than the slot 15, and like the slot 15, it is preferable that the inside is not hollow and is filled with a dielectric. The opening area of the slot of the keyboard cover 11 and its peripheral area may be formed of a dielectric.

  It should be noted that the present invention is not limited to the above-described disclosure, and can be freely changed without departing from the gist of the present invention.

1, 2, 3 Electronic device 10 Main body housing 11 Keyboard cover 12 Base cover 13 Keyboard device 15, 15a, 15b Slot 20 Display housing 21 Display device 21 Bezel 22 Display rear cover 23 Display device 30, 31 Hinge device 40, 50 Portion 41 Substrate 32 Monopole antenna 43 Grounding portion 35, 35a, 35b Slot A1, A1a, A1b, B1 Slot antenna λ Wavelength used

Claims (13)

A main body housing covered with a base cover whose lower surface is formed of a conductor and a keyboard cover whose upper surface is formed of a keyboard and a dielectric;
The display rear cover is connected to the main body casing via a hinge, and the upper surface is formed of a conductor and the lower surface is covered with a display device and a bezel formed of a dielectric. A display housing formed with,
With
The base cover is an electronic device provided with a slot that resonates at a position opposite to the slot of the slot antenna when a display rear cover of the display casing is overlapped with a lower surface or an upper surface of the main body casing. The electronic device according to claim 1,
The slot antenna is an electronic device having a power feeding unit in which a power feeding antenna excited at a slot opening is arranged. The electronic device according to claim 2,
The electronic device is a monopole antenna or a dipole antenna. The electronic device according to claim 1,
A plurality of the slot antennas are formed,
An electronic device in which the base cover is provided with a plurality of slots corresponding to the positions of the slots of each slot antenna. The electronic device according to claim 1,
An electronic device in which the opening shape of the slot of the slot antenna and the slot arranged opposite to the slot are the same. The electronic device according to claim 1,
An electronic device in which an electrical length of the slot arranged to face the slot of the slot antenna is an integral multiple of 1/4 of a wavelength used by the slot antenna. A first housing;
A second housing coupled to the first housing via a hinge;
A slot antenna formed in the second housing,
The lower surface of the one housing is a base cover formed including a conductor,
A slot is provided at a position that is a conductor portion of the base cover and faces the slot region of the slot antenna in a state where the lower surface of the first housing and one surface of the second housing face each other. Electronic equipment. The electronic device according to claim 7, wherein
The first housing includes an input device,
The second housing includes a display,
The display is provided on a surface facing the one surface of the second housing,
The slot area of the slot antenna is an electronic device provided in a bezel area of the second housing. The electronic device according to claim 8, wherein
The one surface of the second housing is a display cover formed including a conductor,
An electronic device in which a slot of the slot antenna is provided in a conductor portion of the display cover. The electronic device according to claim 9, wherein
The slot provided in the display cover is an electronic device formed by filling a dielectric. The electronic device according to claim 10, wherein
The shape of the slot of the base cover is the same as the shape of the slot area of the slot antenna. The electronic device according to any one of claims 9 to 11,
The slot provided in the base cover is an electronic device formed by filling a dielectric. In claim 9,
The surface facing the lower surface of the first housing is an upper surface cover formed including a conductor,
An electronic device in which a portion of the upper surface cover that opposes the slot region of the base cover or a portion that opposes the region combining the slot region and its peripheral region is formed of a dielectric.

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