JP2013258653A - Portable terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and reliably secure the waterproofness while reducing the material costs in a portable terminal.SOLUTION: A double sided tape 5, which is divided into at least two pieces or more and forms a rectangular frame shape when being connected, is prepared. Then, a viewing display 2 is housed in a display housing part 3a, and the double sided tape 5 is applied to a peripheral part 3b of the display housing part 3a. An adhesive 10 is applied to a cutout part 5c formed at an end part where the divided double sided tapes 5 are connected. A glass cover 6 is applied onto the double sided tape 5 and the adhesive 10 to flow the adhesive 10 and thereby firmly adheres to a housing 3.

Description

  The present invention includes a rectangular plate-like display, a housing having a display housing for housing the display, and a transparent cover for sealing the display in a state where the display is housed in the display housing. It is related with the portable terminal which has.

  Conventionally, portable terminals such as waterproof cellular phones have been used. In a waterproof portable terminal having a display, it is necessary to improve the appearance while making the display screen large and waterproof.

  For example, as in Patent Document 1, when a touch panel or a cover glass is attached to a housing, a rectangular frame-shaped double-sided tape is attached to the peripheral portion of the display housing. Specifically, as illustrated in FIGS. 12 and 13, the portable terminal 501 includes a rectangular plate-like display display 502, a housing 503 having a display housing portion 503 a for housing the display display 502, and a display A protective panel 506 that covers the display 502 in a sealed state in a state where the display 502 is accommodated in the display accommodating portion 503a. A substrate 507 and a battery 508 are disposed on the back side of the housing 503 and are covered with a rear cover 504. As shown in FIG. 14, a rectangular frame-shaped double-sided tape 505 whose center is cut out is pasted on the peripheral edge 503b of the display housing portion 503a of the housing 503 with a jig or the like, and the protective panel 506 is pasted thereon. I have to.

  Also, as in Patent Document 2, an adhesive is applied to the housing 503 in a frame shape with a dispenser instead of the double-sided tape 505. Specifically, as shown in FIGS. 15 and 16, an adhesive 510 is applied in a frame shape to the peripheral edge portion 503b of the display housing portion 503a with a dispenser, and a protective panel 506 is pasted thereon. .

JP 2009-188488 A JP 2006-276624 A

  However, as in Patent Document 1, if the central portion is pulled out in order to make the double-sided tape into a rectangular frame shape, the material cost of the central portion is wasted, and there is a problem that the unit price of the double-sided tape becomes high.

  In addition, as in Patent Document 2, when the adhesive is applied to the peripheral portion of the display housing portion, it is necessary to control the position and the amount of application with high accuracy on the entire periphery. For this reason, there are problems that initial investment for introducing a high-precision machine increases and process management becomes complicated.

  This invention is made | formed in view of this point, The place made into the objective is to ensure waterproofness easily and reliably, reducing a material cost.

  In order to achieve the above object, in the present invention, a double-sided tape and an adhesive are combined.

Specifically, in the first invention,
A rectangular plate display,
A housing having a display housing portion for housing the display;
A portable terminal having a transparent cover that hermetically covers the display display in a state in which the display display is accommodated in the display accommodating portion.

And in the mobile terminal,
The frame-like double-sided tape to be attached to the peripheral edge of the display housing portion is divided into at least two or more, and a notch is provided at the end of the double-sided tape where the divided double-sided tapes are joined together. Formed,
Adhesive is applied to the peripheral edge corresponding to the notch,
The transparent cover is in close contact with the housing by the double-sided tape and adhesive.

  According to said structure, since the double-sided tape is divided | segmented into 2 or more, the material of a center part is not wasted like the past. Further, since the position of the adhesive and the control of the application amount are limited to only the joining portion of the tape, the application time, the application amount, and the like are reduced.

In the second invention, in the first invention,
The peripheral edge of the casing corresponding to the notch is recessed in the surface so as to induce the flow of the adhesive.

  According to said structure, since an adhesive agent flows into the recessed part, it can avoid that an adhesive climbs to the double-sided tape side by a simple structure, and a waterproof property falls.

In a third invention, in the first or second invention,
The joined ends of the double-sided tape are cut out in steps,
The adhesive is applied so as to close the gap on the cutout side formed at the joined ends.

  According to said structure, since a waterproof effect is improved by the uneven part, and a clearance gap part is block | closed with an adhesive agent, a high waterproof effect is acquired.

In the fourth invention, a rectangular plate display,
A housing having a display housing portion for housing the display;
The present invention is directed to a method of manufacturing a portable terminal having a transparent cover that covers the display display in a sealed state in a state where the display display is accommodated in the display accommodating portion.

And the manufacturing method is
Prepare a double-sided tape that is divided into at least two parts and joined together to form a rectangular frame,
The display display is accommodated in the display accommodating portion, and the double-sided tape is attached to the peripheral portion of the display accommodating portion,
Applying an adhesive to the peripheral edge corresponding to the notch formed at the end where the divided double-sided tapes are joined together,
The transparent cover is affixed on the double-sided tape and the adhesive, the adhesive is flowed, and the transparent cover is brought into close contact with the casing.

  According to said structure, since the double-sided tape is divided | segmented into 2 or more, the material of a center part is not wasted like the past. Further, since the position of the adhesive and the control of the application amount are limited to only the joining portion of the tape, the application time, the application amount, and the like are reduced.

In the fifth invention, in the fourth invention,
The adhesive is applied so as to be inclined with respect to each side of the notch portion in plan view so as to flow in a direction away from the display display in plan view when pressed by the transparent cover.

  According to said structure, since the flow direction of an adhesive agent can be guide | induced to the inclined direction (direction away from a display display), it prevents that an adhesive agent rides on a double-sided tape and a waterproof property falls. This increases the position tolerance.

In the sixth invention, in the fourth invention,
The notch has a rectangular shape,
The adhesive is applied in a circle in plan view so as to flow in a direction away from the display in plan view when pressed by the transparent cover.

  According to said structure, since an adhesive agent is apply | coated circularly, an application | coating process is simplified.

  As described above, according to the present invention, the double-sided tape is attached to the peripheral portion of the display housing portion, and the adhesive is applied to the notch formed at the end where the divided double-sided tapes are joined together. By attaching the transparent cover over the double-sided tape and adhesive and allowing the adhesive to flow to adhere the transparent cover to the housing, waterproofing is ensured easily and reliably while reducing material costs. be able to.

It is the I section enlarged front view of FIG. 2 which shows the notch part of a double-sided tape, an adhesive agent, and its periphery. It is a front view which shows the mobile telephone which concerns on embodiment of this invention. It is a disassembled perspective view which shows a mobile telephone. It is a flowchart which shows the outline of the manufacturing process of a mobile telephone. It is a front view which shows the outline of arrangement | positioning of a double-sided tape and an adhesive agent. FIG. 6 is an enlarged front view of a VI part in FIG. 5, (a) shows before adhesive application, (b) shows after adhesive application, and (c) shows after touch panel application. It is sectional drawing cut | disconnected by each straight line corresponding to (a)-(c) of FIG. FIG. 10 is an exploded perspective view showing a mobile phone according to Modification 1; FIG. 9 is a view corresponding to FIG. FIG. 6 is a view corresponding to FIG. FIG. 6 is a view corresponding to FIG. It is a front view which shows the portable terminal of a prior art. It is a disassembled perspective view which shows the mobile phone of a prior art. It is a flowchart which shows the process of affixing the frame-shaped double-sided tape of a prior art. It is a front view which shows the frame-shaped adhesive agent of a prior art. It is a flowchart which shows the process of apply | coating an adhesive agent to the frame shape of a prior art.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

-Mobile phone configuration-
2 and 3 show a mobile phone 1 as a mobile terminal according to an embodiment of the present invention. The mobile phone 1 has, for example, a rectangular plate shape with rounded corners, and has a rectangular plate shape such as a liquid crystal display inside. A display 2 is provided. The display 2 is housed in a display housing 3 a formed on the surface side of the housing 3. And the display 2 is covered with the glass cover 6 as a transparent cover in the state accommodated in this display accommodating part 3a. Even if the display display 2 is fitted on the display housing 3 a side, it may be attached to the back surface of the glass cover 6, and a touch panel may be further attached to the back surface of the glass cover 6. The glass display 6 covers the display 2 in a sealed manner. The substrate 7 and the battery 8 are accommodated on the opposite side (rear side) of the display accommodating portion 3 a, and the rear side is covered with the rear cover 4.

  Next, the pasting structure of the glass cover 6 will be described. A double-sided tape 5 is attached in a rectangular frame shape to the peripheral edge portion 3b of the rectangular frame shape of the display accommodating portion 3a. In the present embodiment, the double-sided tape 5 is divided into four. For example, the double-sided tape comprises a pair of upper and lower upper and lower portions 5a and a pair of left and right left and right portions 5b. As shown in FIG. 1 in an enlarged manner, a rectangular cutout 5c is provided at an end portion where the thicker upper and lower portions 5a are joined to the left and right portions 5b. The notch 5c may be provided at the joining end of the left and right parts 5b, but is desirable because the upper and lower parts a are far from the gap C. A slight gap C is provided between the joining end of the upper and lower parts 5a and the joining end of the left and right parts 5b in order to prevent the two from overlapping each other. And the adhesive agent 10 is apply | coated by the dispenser etc. on the surface of the peripheral part 3b corresponding to the notch part 5c, and the adhesive agent 10 inclines with respect to each edge | side of the upper-lower part 5a and the left-right part 5b by planar view As a result, the character is in the shape of a “ku” in hiragana.

  A rectangular guide recess 11 smaller than the notch 5c is recessed on the side far from the gap C in the peripheral edge 3b of the housing 3 corresponding to the notch 5c. The guide recess 11 may be circular or the like, and by providing the guide recess 11, the excess adhesive 10 pressed when the glass cover 6 is stuck flows into the guide recess 11.

  In this way, the glass cover 6 is brought into close contact with the housing 3 by the double-sided tape 5 and the adhesive 10, and the height of the peripheral wall 3c formed on the entire outer periphery of the housing 3 and the glass cover 6 is substantially the same. The shine is also getting better.

-Manufacturing method of mobile phone-
Next, a manufacturing method (assembly procedure) of the mobile phone 1 will be described with reference to FIGS.

  First, the double-sided tape 5 that is divided into four as in the above-described embodiment and is connected to each other to form a rectangular frame is prepared. At this stage, the display 2 may be accommodated in the display accommodating portion 3a, or may be attached to the back surface of the glass cover 6 together with the touch panel.

  Next, in step S01 shown in FIG. 4, as shown in FIGS. 6A and 7A, the upper and lower portions 5a and the left and right portions 5b of the double-sided tape 5 are respectively attached to the peripheral edge portion 3b of the display housing portion 3a. . At this time, positioning may be performed by appropriately providing a notch hole in the separator of the double-sided tape 5 or a jig may be used. At this time, if the gap C between the joining ends is not set to some extent, an overlapping portion is generated in the double-sided tape 5 due to a shift at the time of bonding and the waterproof performance is deteriorated.

  Next, in step S02, as shown in FIGS. 5, 6 (b) and 7 (b), the peripheral edge 3b corresponding to the notch 5c formed at the joining end of the divided double-sided tapes 5 to each other. Adhesive 10 is applied to the surface. Specifically, the corner portion with the gap C is made to be the most spaced from the adhesive 10, and is inclined so that the distance from the adhesive 10 becomes smaller as the distance from the corner is increased. The adhesive 10 is applied with a dispenser in the shape of "". At this time, the adhesive 10 has a three-dimensional shape, and the thickness thereof is thicker than the thickness of the double-sided tape 5.

  Next, in step S03, the glass cover 6 is attached from above the double-sided tape 5 and the adhesive 10 as shown in FIGS. 6C and 7C. Then, the adhesive 10 having a thickness larger than that of the double-sided tape 5 is spread and flows. At this time, since the adhesive 10 is applied in a “<” shape in plan view, it flows in a direction away from the display 2. In addition, since the rectangular guide recess 11 is provided on the peripheral edge 3b, it is possible to prevent excess adhesive 10 from flowing into the guide recess 11 and the adhesive 10 from running to the double-sided tape 5 side. . For this reason, there is no difference in height between the portion that has ridden on the adhesive 10 and the portion that has not ridden, and the waterproof property does not deteriorate.

  As described above, since the double-sided tape 5 is divided into two or more parts, the material of the central portion is not wasted and the cost of parts is not increased unlike the conventional case.

  In addition, since the control of the position and application amount of the adhesive 10 is limited only to the joining portion of the double-sided tape 5, it does not require a long application time as in the case of applying the adhesive in a conventional rectangular shape, The coating amount is also reduced, and the manufacturing cost is significantly reduced.

  Therefore, according to the mobile terminal according to the present embodiment, it is possible to easily and reliably ensure waterproofness while reducing material costs.

-Modification 1-
FIG. 8 shows a first modification of the embodiment of the present invention, which differs from the above embodiment in that the configuration of the double-sided tape 105 is different. In the following modifications, the same parts as those in FIGS. 1 to 7 are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 8, the double-sided tape 105 may be divided into two. In this case, each of the pair of divided portions 105a has an L shape in plan view. Since there are two notches 105c, the adhesive 10 and the guide recess 11 need only be provided in two places. Even in this case, there is no waste in the central portion of the double-sided tape 105, which is economically advantageous. Since the segment 105a is required to have higher positioning accuracy because it is larger in an L shape compared to the above embodiment, the number of parts is reduced, and the number of places where the adhesive 10 is applied is reduced to two. Is advantageous.

-Modification 2-
FIG. 9 shows a second modification of the embodiment of the present invention, which differs from the above embodiment in that the configuration of the double-sided tape 205 is different.

  As shown in FIG. 9, the double-sided tape 205 may be divided into two. In this case, the first dividing unit 205a is U-shaped in plan view, and the second dividing unit 205b is linear. Since there are two notches 205c, the adhesive 10 and the guide recess 11 need only be provided in two places. Even in this case, there is no waste in the central portion of the double-sided tape 205, which is economically advantageous. Although higher positioning accuracy is required for the U-shaped first divided portion 205a than the above embodiment, the number of parts is reduced and the number of places where the adhesive 10 is applied is reduced to two, which is advantageous in terms of manufacturing cost. is there.

-Modification 3-
FIG. 10 shows a third modification of the embodiment of the present invention, which differs from the above embodiment in that the configuration of the adhesive 310 is different.

  As shown in FIG. 10, the method of applying the adhesive 310 may be a circle in a plan view or a substantially spherical shape in a three-dimensional view, instead of a “<” shape in plan view. In this case, since the adhesive spreads in a circular shape with a gap from the gap C portion, it is difficult for the adhesive to run in the vicinity of the gap C.

-Modification 4-
FIG. 11 shows a fourth modification of the embodiment of the present invention, which differs from the above embodiment in that the configuration of the double-sided tape 405 is different.

  As shown in FIG. 11, the joined end portions of the double-sided tape 405 may be cut out in steps. For example, the waterproof property of the double-sided tape 405 is improved by providing the stepped portion 405b at the tip of the substantially C-shaped divided portion 405a. Then, the adhesive 10 is applied in a “<” shape so as to close the gap C from the upper and lower outer sides on the surface of the peripheral edge 3 b corresponding to the rectangular cutout 405 c formed at the joining end. With this configuration, the waterproof effect is improved by the uneven portion 405b and the gap C is reliably closed by the adhesive 410, so that a high waterproof effect is obtained.

(Other embodiments)
The present invention may be configured as follows with respect to the above embodiment.

  That is, in the said embodiment, although the portable terminal was the mobile telephone 1, if it has a display display, PHS (Personal Handy-phone System), PDA (Personal Digital Assistant), a smart phone, a personal computer, a mobile tool, An electronic dictionary, a calculator, a game machine, etc. may be sufficient.

  In addition, the above embodiment is an essentially preferable illustration, Comprising: It does not intend restrict | limiting the range of this invention, its application thing, or a use.

  As described above, the present invention seals a display with a rectangular plate-shaped display, a housing having a display housing for housing the display, and the display display being housed in the display housing. It is useful for a portable terminal such as a cellular phone having a transparent cover that covers it.

1 Mobile phone (mobile terminal)
2 display
3 Case
3a Display container
3b peripheral edge
4 Rear cover
5 Double-sided tape
5a Top and bottom
5b Left and right part
5c Notch
6 Glass cover
7 Substrate
8 battery
10 Adhesive
DESCRIPTION OF SYMBOLS 11 Guide recessed part 105 Double-sided tape 105a Dividing part 105c Notch part 205 Double-sided tape 205a 1st dividing part 205b 2nd dividing part 205c Notch part 310 Adhesive 405 Double-sided tape 405a Dividing part 405b Uneven part 405c Notch part

Claims (6)

A rectangular plate display,
A housing having a display housing portion for housing the display;
A portable terminal having a transparent cover that covers the display display in a sealed state in a state where the display display is accommodated in the display accommodating portion,
The frame-like double-sided tape to be attached to the peripheral edge of the display housing portion is divided into at least two or more, and a notch is provided at the end of the double-sided tape where the divided double-sided tapes are joined together. Formed,
Adhesive is applied to the peripheral edge corresponding to the notch,
The mobile terminal, wherein the transparent cover is in close contact with the housing by the double-sided tape and an adhesive. The mobile terminal according to claim 1,
A portable terminal, wherein a peripheral portion of the casing corresponding to the notch has a recessed surface so as to induce the flow of the adhesive. The mobile terminal according to claim 1 or 2,
The joined ends of the double-sided tape are cut out in steps,
A mobile terminal, wherein the adhesive is applied so as to close a gap on the cutout side formed in the joined end portions. A rectangular plate display,
A housing having a display housing portion for housing the display;
In the method for manufacturing a portable terminal having a transparent cover that covers the display display in a sealed state in a state where the display display is accommodated in the display accommodating portion,
Prepare a double-sided tape that is divided into at least two parts and joined together to form a rectangular frame,
The display display is accommodated in the display accommodating portion, and the double-sided tape is attached to the peripheral portion of the display accommodating portion,
Applying an adhesive to the peripheral edge corresponding to the notch formed at the end where the divided double-sided tapes are joined together,
A method for manufacturing a portable terminal, comprising: attaching the transparent cover from above a double-sided tape and an adhesive; causing the adhesive to flow; and attaching the transparent cover to the housing. In the manufacturing method of the portable terminal of Claim 4,
The adhesive is applied so as to incline in a plan view with respect to each side of the notch so as to flow in a direction away from the display in a plan view when pressed by the transparent cover. A manufacturing method of a portable terminal. In the manufacturing method of the portable terminal of Claim 4,
The notch has a rectangular shape,
A method for manufacturing a mobile terminal, wherein the adhesive is applied in a circle in a plan view so as to flow in a direction away from the display in a plan view when pressed by the transparent cover.

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