JP2009232164A - Mobile terminal and manufacturing method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thinned card-shaped mobile terminal in which a housing case is essentially eliminated and a frame, a substrate, an antenna, and the like are, then built-in so that rigidity is improved and antenna performance is enhanced. <P>SOLUTION: In a mobile terminal 100, an H-shaped frame 20, an antenna 6 and other components are built-in and arehardened with resin 5, wherein they are disposed and coagulated so as to make visible outside front-side surface portions of a receiver 1, display unit 2, operating key 3 and microphone 4 which are to be used as a user input/output means for a user interface. Other components are made to include within the resin 5, and the antenna 6 is disposed substantially at the center, in between one-side open ends of the frame 20 in the lengthwise direction. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a thin card-shaped portable terminal and a manufacturing method thereof, and more particularly to optimization of arrangement of a frame and an antenna for increasing rigidity.

  As one form of the cellular phone, a cellular phone having a card shape that is thinned can be considered. In that case, a structure that increases rigidity is required.

  In a current mobile phone, there is a mobile electronic device that discloses a structure for increasing rigidity (for example, see Patent Document 1). This portable electronic device is a foldable open / close type of the first housing 2 and the second housing 3, and is provided with reinforcing frames 25 and 27, respectively. The reinforcement frames 25 and 27 are metal materials including at least one of an aluminum alloy and a magnesium alloy, and are formed in a substantially box shape that opens in the thickness direction of the reinforcement frames 25 and 27. In addition, a circuit board 21 is provided inside the first housing 2, and is electrically connected to various electronic components such as a call antenna unit. However, there is no description of where this antenna is disposed with respect to the metallic reinforcement frame 25, and there is no description of the influence from the metallic reinforcement frame 25 on the antenna.

As another portable terminal, there is a casing structure of a portable terminal that is thinned by improving the rigidity of the casing (see, for example, Patent Document 2). This portable terminal includes a rear case 12 and a front case 14 formed of resin as a casing, and a substrate 16 and a numeric keypad 18 are disposed in a space between the rear case 12 and the front case 14. . In the rear case 12, a side wall 26a and a side wall 26b are connected by a bottom plate, and a vertical rib 28 parallel to the side wall 26b and a horizontal rib 34 connecting the vertical rib 28 and the side wall 26a are integrally formed of resin. This increases the rigidity. The antenna is housed between the side wall 26b and the vertical rib 28.
In the devices of Patent Documents 1 and 2, a housing that encloses components such as a substrate is required.
Japanese Unexamined Patent Publication No. 2007-110482 (paragraph numbers [0013 to 0014], FIGS. 2 and 3) JP 2001-119455 A (page 3 to page 4, FIGS. 1 to 5)

  The apparatuses of Patent Documents 1 and 2 essentially require a housing that encloses and holds components such as a substrate. The present invention provides a card-shaped portable terminal that is made of a thin card with a built-in frame, substrate, antenna, etc., having high rigidity and good antenna performance. The purpose is to provide.

  In order to achieve the above object, the portable terminal of the present invention extends in the longitudinal direction with the plate surface parallel to the thickness direction among the three-dimensional directions of the longitudinal direction, the lateral direction, and the thickness direction of the portable terminal. A frame formed integrally with a long plate, a horizontal plate having a plate surface parallel to the thickness direction and connecting portions other than the ends of the two long plates in the horizontal direction, and the length of the two frames A printed board disposed between the boards, an electronic component mounted on the printed board, and a filling resin including the printed board, the frame, and the antenna.

  According to the present invention, the card case is made thin by using a resin, essentially eliminating the housing case, incorporating a frame, a substrate, an antenna, etc., and having high rigidity and good antenna performance. A terminal can be used.

  FIG. 1 is an external view of a mobile terminal according to each embodiment of the present invention, in which (A) is a perspective view, (B) is a front view, (C) is a side view, and (D) is a rear view. The portable terminal 100 has a card shape and is described as a three-dimensional direction of a longitudinal direction, a width direction, and a thickness direction. Hereinafter, the longitudinal direction, the width direction, and the thickness direction are defined as this direction of the mobile terminal 100.

  On the front side of the portable terminal 100, a receiver 1 that is a receiver, a display unit 2, a plurality of operation keys 3, and a microphone 4 are arranged. And the whole is hardened with the resin 5 so that those parts may be wrapped, and those surfaces can be seen, and the whole shape of a portable terminal is comprised. A display that also serves as an ID card such as an employee ID card is printed on the back side of the portable terminal 100.

  FIG. 2 is an external perspective view of the mobile terminal according to the first embodiment of the present invention and an external perspective view of a built-in frame. The mobile terminal 100 includes a frame 20 and is solidified with the resin 5 including the frame 20.

  The frame 20 is made of sheet metal, and includes two long plates 21 that extend in the longitudinal direction, a horizontal plate 22 that connects portions other than the ends of the two long plates 21 in the width direction, and a width from the long plate 21 in the width direction. A plurality of extending tongue pieces 23 are integrally formed. The long plate 21 is open at both ends in the longitudinal direction.

  The plate surfaces of the long plate 21 and the horizontal plate 22 are arranged in parallel to the thickness direction, and exhibit the rigidity against the warp in the longitudinal direction and the width direction of the mobile terminal 100 with the minimum configuration of the long plate 21 and the horizontal plate 22. To do. The tongue piece 23 is a tongue piece for positioning the printed board incorporated therein when the portable terminal 100 is manufactured. Note that the frame 20 is not limited to a sheet metal, and may be a material having strong rigidity such as a carbon-added resin.

  FIG. 3 is a diagram for explaining the component arrangement of the mobile terminal according to the first embodiment of the present invention, and FIG. 3A is an external front view of the mobile terminal 100. (B) is a component arrangement view seen from the front, and shows the components seen from the outside of the mobile terminal 100 and the built-in components in a transparent state. (C) is a component arrangement view seen from the side, and shows the components seen from the outside of the mobile terminal 100 and the built-in components in a transparent state.

  The built-in components include the frame 20, the printed board 30, and the printed board 40. A plurality of operation keys 3, a microphone 4, an invisible antenna 6, a wireless unit 7, a wireless charging module 8, and a control unit 9 are mounted on the printed circuit board 30 by soldering. Yes. On the printed circuit board 40, the receiver 1, the display unit 2, and the invisible display control unit 10 that are visible from the outside of the portable terminal 100 are soldered and mounted.

  The wireless charging module 8 is a power supply unit that is charged by non-contact electromagnetic induction with a charger (not shown) outside the mobile terminal 100, and supplies power to the entire mobile terminal 100. The wire 11 is a plurality of wires for power lines and signal lines between the printed board 30 and the printed board 40.

  The resin 5 is filled and hardened so that the front surface portion of the receiver 1, the display unit 2, the operation key 3, and the microphone 4 used as user input / output means for the user interface can be seen from the outside. The receiver 1 and the microphone 4 do not need to be directly visible from the outside, and may have a structure that allows sound to pass. Other parts are hardened with resin 5 so that they cannot be seen from the outside.

  The frame 20 is built in the mobile terminal 100 and further solidified with the resin 5, thereby exhibiting rigidity against warpage in the longitudinal direction and the width direction of the mobile terminal 100.

  The antenna 6 is disposed at a substantially central portion of the open end portion of the frame 20. As a result, the metal frame 20 can be separated from the metal frame 20 as much as possible, and the metal portion that is blocked from the outside can be reduced. For example, the antenna performance can be maintained as a cellular antenna. In addition, when the mobile terminal 100 is held by hand, the antenna 6 is not easily hidden by the hand.

  Although not shown, when the frame 20 is made of a conductive material, the frame 20 is connected to the ground pattern of the printed board 30 on which the antenna 6 is disposed. Thereby, antenna ground can be strengthened and antenna performance can be maintained.

[Production method]
A method for manufacturing the portable terminal 100 having such a structure will be described below. The manufacturing method of the present invention is a manufacturing method in which each mobile terminal 100 is completed by creating a plurality of mobile terminals in a connected state and finally removing them with a mold.

FIG. 4 is a front view for explaining the steps of the method for manufacturing the mobile terminal according to the first embodiment of the present invention, illustrating three connected mobile terminals 100, in the longitudinal direction and the width direction of the mobile terminal 100. The state of the resin 5 will be described.
FIG. 5 is a side view for explaining the steps of the manufacturing method of the mobile terminal according to the first embodiment of the present invention, illustrating one connected mobile terminal 100, and the resin 5 in the thickness direction of the mobile terminal 100. The state of will be described.
In both figures, (A) is a ladder frame, (B) is a printed circuit board placed on the ladder frame, and after filling with resin, (C) is finally removed with a mold, and a single unit of the portable terminal 100 is completed. It is in the state.

  The ladder-type frame 25 shown in both figures (A) has a ladder-like shape by connecting the frames 20, and the long plates 21 are continuously connected. In the initial stage of the manufacturing process, the ladder-shaped frame 25 is prepared.

  First, predetermined parts are soldered to the printed board 30 and the printed board 40 to complete a board unit.

  Next, the ladder-type frame 25 is arranged between the side jig 60 and the side jig 61 as shown in FIG. 4B and between the upper jig 62 and the back jig 63 as shown in FIG. The printed circuit board 30 and the printed circuit board 40 that have been soldered for a plurality of portable terminals 100 are aligned with the tongue pieces 23 of the ladder frame 25 and placed in the ladder frame 25.

  The upper surface jig 62 is in contact with the front surface portion of the receiver 1, the display unit 2, the operation key 3, and the microphone 4 that are used as user input / output means for user interface among the components mounted on the portable terminal 100. Thus, the surface portion is not filled with the resin 5.

  The antenna 6, the wireless unit 7, the wireless charging module 8, the control unit 9, the display control unit 10, the wire 11, the frame 20, the printed circuit board 30, and the printed circuit board 40 of other mounted parts are included in the resin 5. The side jig 60, the side jig 61, the top jig 62, and the back jig 63 are positioned.

  Then, as shown in both figures (B), the resin 5 is filled between the side jig 60 and the side jig 61 and between the upper jig 62 and the rear jig 63 and hardened. Thereby, it will be in the state completed in the state which the several portable terminal 100 connected.

  Next, as shown in FIGS. 2C and 2C, when the plurality of connected portable terminals 100 are removed from the jig and pulled out with a mold as shown by the dotted frame in FIG. 4C and the dotted arrow in FIG. A single unit of the portable terminal 100 is completed. In this way, a large number of portable terminals 100 can be produced at the same time, and the mass productivity is excellent.

  According to the first embodiment of the present invention, the housing case is essentially eliminated, the frame, the substrate, the antenna, and the like are built in and filled with resin, and the frame with a simple configuration has high rigidity and is simple. By using the open end portion in the longitudinal direction of the frame with such a structure and disposing the antenna there, a thin card-shaped portable terminal with good antenna performance can be obtained. In addition, a large number of portable terminals can be produced at the same time, and the mass productivity is excellent.

  FIG. 6 is an external perspective view of a mobile terminal according to Embodiment 2 of the present invention and an external perspective view of a built-in frame. Differences from the frame 20 (FIG. 2) of the first embodiment will be mainly described. As a difference, the long plate 21 is connected by a horizontal plate 26 without opening one end in the longitudinal direction. Further, the frame 20 of the second embodiment is made of a highly rigid and conductive material in order to ensure rigidity and to be used as an antenna.

  The frame 20 includes two long plates 21, a horizontal plate 22 that connects substantially the center of the two long plates 21 in the width direction, and a horizontal plate 26 that connects one end of the two long plates 21 in the width direction, A plurality of tongue pieces 23 are integrally formed. Thereby, a loop is formed by the horizontal plate 22, the horizontal plate 26, and a part of the long plate 21 connected between both the horizontal plates. This loop is used as an RFID (Radio Frequency Identification) antenna 27. A feeding point 28 is provided in a part of the RFID antenna 27 to connect to a radio circuit (not shown).

  An RFID chip (not shown) is mounted inside the mobile terminal 100 to control individual information of people and objects, and short-range communication is performed between the RFID antenna 27 and a reader / writer device outside the mobile terminal 100, Used for identification and management of people and things. For example, it is used for human entry / exit management. Furthermore, it is even better if it is used in combination with printing of an employee ID card or the like as shown in the rear view of the portable terminal 100 in FIG.

  In addition, the antenna 6 described in the first embodiment is, for example, a cellular antenna. In the second embodiment, the antenna 6 is arranged at the approximate center on the open end side of the two long plates 21 and can exhibit performance.

  In addition, about the manufacturing method of the portable terminal 100 carrying the frame 20 which has this loop shape, the ladder-type flame | frame with which this frame 20 is connected continuously can be prepared, and it can manufacture similarly to Example 1. FIG.

  According to the second embodiment, in addition to the effects of the first embodiment, the frame itself can be used as an RFID antenna.

In each embodiment, the frame 20 has a single horizontal plate 22, but a plurality of frames 20 may be provided in a portion excluding the end of the long plate 21.
Also, the two printed boards 30 and 40 are provided, but the printed boards 30 and 40 are combined into one sheet, and the connecting wire between them is eliminated, and this printed board is placed on the back side of the horizontal plate 22 of the frame 20. It may be arranged.
Moreover, although the wireless charging module 8 is mounted as a power supply unit, another power supply unit such as a battery may be mounted.
The mobile terminal 100 can be applied to a card-shaped mobile phone, PHS, PDA, or the like. The present invention can also be applied to various cards that do not have operation keys or a display unit.

The external view of the portable terminal which concerns on each Example of this invention. The external appearance perspective view of the portable terminal which concerns on Example 1 of this invention, and the external appearance perspective view of the flame | frame incorporated. The figure explaining the components arrangement | positioning of the portable terminal which concerns on Example 1 of this invention. The front view explaining the process of the manufacturing method of the portable terminal which concerns on Example 1 of this invention. The side view explaining the process of the manufacturing method of the portable terminal which concerns on Example 1 of this invention. The external appearance perspective view of the portable terminal which concerns on Example 2 of this invention, and the external appearance perspective view of the flame | frame incorporated.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Receiver 2 Display part 3 Operation key 4 Microphone 5 Resin 6 Antenna 7 Wireless part 8 Wireless charging module 9 Control part 10 Display control part 11 Wire material 20 Frame 21 Long plate 22 Horizontal plate 23 Tongue piece 25 Ladder type frame 26 Horizontal plate 27 RFID Antenna 28 Feed point 30, 40 Printed circuit board 60, 61 Side jig 62 Upper surface jig 63 Back jig 100 Portable terminal

Claims (10)

Of the three-dimensional directions of the longitudinal direction, lateral direction, and thickness direction of the mobile terminal, two long plates that extend in the longitudinal direction with the plate surface parallel to the thickness direction, and the plate surface parallel to the thickness direction A frame integrally formed with a horizontal plate that connects portions other than the ends of the two long plates in the horizontal direction;
A printed circuit board disposed between two long plates of the frame;
Electronic components mounted on the printed circuit board;
A portable terminal comprising: the printed circuit board; a frame; and a filling resin containing an antenna. The electronic component includes at least an operation unit and a display unit,
The portable terminal according to claim 1, wherein the operation surface of the operation means and the display surface of the display means are located outside the filled resin.   The mobile terminal according to claim 1 or 2, further comprising an antenna disposed between open ends in the same direction of the two long plates of the frame. The mobile terminal according to claim 3, wherein the frame is made of a conductive material.   The mobile terminal according to claim 4, wherein the frame is electrically connected to a ground pattern of the printed circuit board. Of the three-dimensional directions of the longitudinal direction, lateral direction, and thickness direction of the mobile terminal, two long plates that extend in the longitudinal direction with the plate surface parallel to the thickness direction, and the plate surface parallel to the thickness direction The first horizontal plate that connects the substantially central portions of the two long plates in the horizontal direction, and the end portions in the same direction of the two long plates in the same direction with the plate surfaces parallel to the thickness direction A conductive frame integrally formed with a second horizontal plate connected to
A printed circuit board disposed between two long plates of the frame;
Electronic components mounted on the printed circuit board;
Comprising a filling resin enclosing the printed circuit board and the frame;
A portable terminal comprising a portion of the frame in which a loop is formed by a first horizontal plate, a second horizontal plate, and a long plate as a first antenna for short-range radio. And further comprising a second antenna disposed between open ends in the same direction of the two long plates of the frame,
The electronic component includes at least an operation unit and a display unit,
The filling resin is
The portable terminal according to claim 6, wherein the portable terminal includes at least a portion of the printed circuit board excluding an operation surface of the operation unit and a display surface of the display unit, the frame, and the second antenna.   The portable terminal according to claim 1, wherein a tongue piece for arranging the printed circuit board is provided on the frame.   The portable terminal according to claim 1, wherein one surface of the portable terminal is a printing surface that identifies a user. Two long plates extending in the longitudinal direction with the plate surface parallel to the thickness direction in the three-dimensional direction of the ladder-type conductive frame in the longitudinal direction, lateral direction, and thickness direction, and the plate in the thickness direction A method of manufacturing a portable terminal having a conductive frame, a printed board, an antenna, and a filling resin, which are integrally formed with a plurality of horizontal plates that connect the two long plates in a lateral direction with parallel surfaces. There,
Soldering electronic components including at least operation keys and display means to the printed circuit board;
Arranging the printed circuit board and the antenna after soldering for a plurality of portable terminals within the frame; and
Filling and solidifying resin so as to enclose a portion excluding at least the operation surface of the operation key and the display surface of the display means on the printed circuit board, the frame, and the antenna;
And a step of cutting the whole of the solidified state so as to be separated for each portable terminal in the solidified state.

Images