JP6411649B2 - Electronic device and manufacturing method thereof - Google Patents

Description

  The present invention relates to an electronic apparatus including a translucent panel and a cabinet having a frame portion that covers a peripheral side surface of the translucent panel, and a method for manufacturing the same.

  Conventionally, in an electronic device including a translucent panel and a casing having an opening into which the translucent panel is fitted, the opening is formed from an inner wall surface facing the peripheral surface of the translucent panel, and an inner wall surface. An inner surface extending inward and facing the rear surface periphery of the translucent panel; and a peripheral surface of the translucent panel, an inner wall surface of the casing, a rear surface periphery of the translucent panel, and an inner bottom surface of the casing It is known to provide a silicone resin layer filled with a silicone resin in between (for example, see Patent Document 1).

JP2013-205551A

  By the way, as shown in FIG. 12, in the conventional electronic device 101, if there is a gap C between the peripheral side surface 104a of the translucent panel 104 and the frame portion inner surface 103b of the cabinet 103, natural environment such as pebbles and gravel. When the foreign substance B present underneath is sandwiched and external pressure is applied to the cabinet 104 with the foreign substance B being sandwiched, stress concentrates on the foreign substance B, causing cracks on the end face of the translucent panel 104. Sometimes.

  In addition, in the mounting structure of Patent Document 1, a part of the peripheral surface of the translucent panel is covered with silicone resin, but there is no idea of reliably covering the front side of the peripheral surface, and it is covered with silicone resin. The problem of flaws caused by foreign matter that has entered between the unoccupied part and the inner wall surface has not been solved.

  The present invention has been made in view of such points, and the object of the present invention is to reliably prevent foreign matter from entering between the peripheral side surface of the translucent panel and the inner surface of the frame portion. It is to prevent the panel from cracking.

  In order to achieve the above object, in the present invention, the gap between the peripheral side surface of the translucent panel and the inner surface of the frame portion is filled with a filler so as to include at least a part of the front surface of the translucent panel.

Specifically, in the present invention, a plate-like translucent panel,
A panel pasting part to which the back of the periphery of the translucent panel is pasted by a double-sided tape;
On the premise of an electronic device including a cabinet having a frame portion that is continuous with the panel pasting portion and covers a peripheral side surface of the translucent panel,
The back surface of the translucent panel is pasted to the panel pasting part via the double-sided tape,
A gap between the peripheral side surface of the translucent panel and the inner surface of the frame portion is filled with a filler that covers at least a part of the front surface of the translucent panel.

In addition, based on the premise of the electronic device manufacturing method described above,
Affixing step of affixing the peripheral back of the translucent panel to the panel affixing part via the double-sided tape;
And a filling step of filling the gap between the peripheral side surface of the translucent panel and the inner surface of the frame portion so as to cover at least a part of the front surface of the translucent panel.

  According to these configurations, since the gap between the peripheral side surface of the translucent panel and the inner surface of the frame portion is covered with the filler so as to cover at least a part of the front surface of the translucent panel, the translucent panel Foreign matter does not enter from between the peripheral side surface of the frame and the inner surface of the frame portion, and the generation of cracks based on the end surface of the translucent panel is prevented. Moreover, compared with the case where a translucent panel is stuck only with a double-sided tape, the translucent panel cannot move with respect to a cabinet by the adhesive effect by a filler, and a translucent panel becomes difficult to hurt. Note that “filled with a filler covering at least a part of the front surface of the translucent panel” means that the filler is filled from the peripheral side surface of the translucent panel to the front surface at least on the front side. This means that the amount of filler on the front side of the translucent panel may be very small.

  As described above, according to the present invention, the gap between the peripheral side surface of the translucent panel and the inner surface of the frame portion is filled with the filler that covers at least a part of the front surface of the translucent panel. Accordingly, it is possible to reliably prevent foreign matters from entering between the peripheral side surface of the translucent panel and the inner surface of the frame portion, and to prevent the translucent panel from being broken.

It is a front view which shows the smart phone which concerns on Embodiment 1 of this invention. It is the IB-IB line expanded sectional view of Drawing 1A. It is a flowchart which shows the manufacturing method of a smart phone. It is a front view which shows a mode that resin is filled with a dispenser. It is sectional drawing which shows the filling method using the sheet | seat for pressing which concerns on Embodiment 2. FIG. It is sectional drawing which shows the state which peeled off the sheet | seat for pressing. FIG. 6 is a view corresponding to FIG. 1B showing a modification of the first embodiment. It is the schematic which shows the manufacturing method of the smart phone which concerns on Embodiment 2. FIG. It is sectional drawing which shows a mode that UV irradiation is performed in the state which affixed the sheet | seat for filling. It is sectional drawing which shows a mode that a sheet | seat for filling is peeled. It is a flowchart which shows a part of manufacturing method of the smart phone which concerns on Embodiment 2. FIG. It is sectional drawing which shows the smart phone which concerns on Embodiment 3. It is sectional drawing which shows a mode that a translucent panel concerning a prior art cracks.

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

(Embodiment 1)
1A and 1B show a smartphone 1 as an electronic apparatus according to Embodiment 1 of the present invention, and the smartphone 1 includes a rectangular plate-like cabinet 3 that houses a display unit 2 on the front side. The front side of the display unit 2 is covered with a rectangular thin plate-shaped translucent panel 4 made of glass, for example. Although not shown in detail, the cabinet 3 accommodates a liquid crystal display 5 provided on the back side of the translucent panel 4, a main board, a rechargeable battery, and the like.

  The cabinet 3 includes a rectangular frame-shaped panel pasting portion 3a to which the peripheral back surface 4a of the translucent panel 4 is pasted by, for example, a rectangular frame-shaped double-sided tape 6. In the cabinet 3, a rectangular frame portion 3 b that covers the peripheral side surface 4 b side of the translucent panel 4 is formed so as to surround the panel pasting portion 3 a. As shown in FIG. 1B, there may or may not be a groove between the front surface of the panel pasting portion 3a and the inner surface of the frame portion 3b, and the front surface of the panel pasting portion 3a and the inner surface of the frame portion 3b are not perpendicular to each other. Also good. In order to make the display area of the liquid crystal display 5 as wide as possible, the frame portion needs to be narrowed, and the width of the double-sided tape 6 is minimized. By sticking the translucent panel 4 with the double-sided tape 6 in this way, it is possible to ensure waterproofness relatively easily.

  A gap C between the peripheral side surface 4 b of the translucent panel 4 and the inner surface of the frame portion 3 b is filled with a filler 7 that covers at least a part of the front surface of the translucent panel 4. The filler 7 is made of, for example, an acrylic UV curable resin having appropriate flexibility. For example, the filler 7 uses a modified acrylate as a base resin and has acrylic groups added to both ends of the main chain such as epoxy, polyester, urethane, and the like, and this acrylic group becomes a reactive group that is polymerized by ultraviolet rays. Most of the front surface of the translucent panel 4 is covered with the scattering prevention film 8, and the portion of the front surface of the translucent panel 4 that is not covered with the scattering prevention film 8 is covered with the filler 7. . The anti-scattering film 8 uses acrylic, PET (polyester) or PE (polyethylene) as a base material, and is subjected to water repellent treatment with fluorine or the like as a surface treatment.

  Next, a method for manufacturing the smartphone 1 according to the present embodiment will be described.

  As shown in FIG. 2, in the attaching step of step S <b> 01, the scattering prevention film 8 is attached to the front surface of the translucent panel 4, and the liquid crystal display 5 is attached to the back side of the translucent panel 4. And the peripheral back surface 4a of the translucent panel 4 is affixed on the panel sticking part 3a using the frame-shaped double-sided tape 6. FIG. In this state, there is a gap C between the peripheral side surface 4b of the translucent panel 4 and the inner surface of the frame portion 3b. Further, since the double-sided tape 6 itself has some flexibility, the translucent panel 4 can move somewhat with respect to the cabinet 3.

  Next, in the filling step of step S02, as shown in FIG. 3, using the dispenser D, the filler 7 is applied so as to cover at least a part of the front surface of the translucent panel 4 in the gap C continuous in a rectangular shape. Fill. For example, the cabinet 3 is placed at a fixed position on the XY automatic stage, and the gap C is automatically filled with the semi-liquid filler 7. At this time, as shown in FIG. 1B, the portion not covered with the anti-scattering film 8 on the front surface of the translucent panel 4 is covered with the filler 7.

  Next, in the sheet pressing step of step S03, as shown in FIG. 4, the filler 7 is pressed with a water-repellent pressing sheet 9 that is difficult to stick to the filler 7 so as to cover at least the filler 7. Flatten. At this time, it is not always necessary to press the entire circumference of the filler 7 at the same time.

  Next, in the wiping process in step S04, as shown in FIG. 5, the pressing sheet 9 is peeled off, and the filler 7 protruding in the sheet pressing process is wiped off. At this time, since the anti-scattering film 8 generally has an anti-fogging effect (water repellent effect), the filler 7 protruding on the anti-scattering film 8 is attracted to the gap C side by the surface tension, It is difficult to remain on the scattering prevention film 8. Moreover, the filler 7 on the scattering prevention film 8 can be easily wiped off.

  Finally, in step S05, the temperature and humidity are set under the curing conditions of the filler 7 made of UV curable resin, and UV irradiation is performed to cure the resin (filler 7).

  Thus, since the gap 7 between the peripheral side surface 4b of the translucent panel 4 and the inner surface of the frame portion 3b is covered with the filler 7 so as to cover at least a part of the front surface of the translucent panel 4, Foreign matter does not enter, and it is possible to reliably prevent the occurrence of cracks based on the end face of the translucent panel 4.

  In addition, the translucent panel 4 does not move with respect to the cabinet 3 due to the adhesive effect of the filler 7 as compared with the case where the translucent panel 4 is attached only with the double-sided tape 6, and as a result, the translucent panel 4 is damaged. It becomes difficult.

  Moreover, since the peripheral front part of the translucent panel 4 which is not covered with the scattering prevention film 8 is also covered with the filler 7, the translucent panel 4 becomes further difficult to be damaged.

  Therefore, according to the smartphone 1 according to the present embodiment, the filler 7 that covers at least a part of the front surface of the translucent panel 4 in the gap C between the peripheral side surface 4b of the translucent panel 4 and the inner surface of the frame portion 3b. In order to prevent the translucent panel 4 from cracking, the foreign body B is surely prevented from entering between the peripheral side surface 4b of the translucent panel 4 and the inner surface of the frame portion 3b. Can do.

-Modification-
FIG. 6 shows a modification of the first embodiment of the present invention, which differs from the first embodiment in that the filling state of the filler 7 is different. In addition, in this modification and each following embodiment, the same code | symbol is attached | subjected about the same part as FIG. 1A-FIG. 5, and the detailed description is abbreviate | omitted.

  That is, as shown in FIG. 6, not the entire gap C but the front side may be covered with the filler 7. Although it is inferior in strength as compared with the case where the gap C is completely covered with the filler 7, at least the front side is completely covered with the filler 7. The effect can be demonstrated. Moreover, the filler 7 does not need to cover the whole side surface of the scattering prevention film 8, and the front side of the translucent panel 4 should just be covered completely.

  In addition, as shown in FIG. 6, in this modification, a bulging portion 3c may be provided at the bottom of the frame portion 3b in order to make it difficult for the semi-liquid UV curable resin to flow into the back. In this way, the gap C can be made as small as possible, and the semi-liquid filler 7 can be made difficult to flow in, so that the amount of filler 7 used can be reduced.

(Embodiment 2)
7 to 10 show Embodiment 2 of the present invention, which differs from Embodiment 1 in that the filling process is different. Differences from the first embodiment will be mainly described.

  After the sticking step in step S01, in the preparation step, a filling sheet 10 is prepared in which an antifouling coating 11 (shown by cross-hatching) is applied to the region excluding the panel sticking portion 3a.

  Next, as shown in FIG. 10, in the patterning process of step S <b> 10, the filler 7 is applied and patterned on a portion of the filling sheet 10 where the antifouling coating 11 having a water repellent effect such as fluorine is not applied.

  Next, in the sheet sticking step of step S <b> 11, the cabinet 7 in which the translucent panel 4 is attached to the patterned filling sheet 10 is filled with the filler 7 around the translucent panel 4. Press down on.

  Next, as shown in FIG. 8, in the UV curing process of step S <b> 12, the filler 7 is cured by applying ultraviolet rays (UV) from above the filling sheet 10.

  Finally, in step S13 shown in FIG. 9, the filling sheet 10 is peeled off.

  If it does in this way, the front of the translucent panel 4 to which the scattering prevention film 8 is not affixed can also be reliably covered with the filler 7, and the filling of the filler 7 is easy.

(Embodiment 3)
FIG. 11 shows Embodiment 3 of the present invention, which differs from Embodiment 1 in that the filling method of the filler 7 is different.

  That is, in the present embodiment, the filler 7 is filled from the resin injection hole 3d provided in the cabinet 3 into the gap C by a dispenser or the like instead of from the front side.

  By doing in this way, it can prevent that the filler 7 leaks out to the front side of the translucent panel 4 and the front side of the frame part 3b as much as possible, and an external appearance does not deteriorate.

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

  That is, in the said embodiment, although the translucent panel 4 was comprised with glass, you may comprise with resin molded products, such as a transparent acrylic board. In this case, the filler 7 may be easily adhered to an acrylic plate or the like.

  In the above embodiment, a UV curable resin is used as the filler 7, but a moisture curable resin such as a thermosetting resin or a moisture curable polyurethane resin may be used. If it is a thermosetting resin, it may be cured by applying heat after coating, and if it is a moisture curable resin, the humidity may be increased. Any material may be easily adhered to the translucent panel 4 and have an appropriate softness.

  In the above embodiment, the electronic device is the smartphone 1, but a tablet terminal having a translucent panel, a PHS (Personal Handy-phone System), a PDA (Personal Digital Assistant), a personal computer, a mobile tool, a wearable terminal, an electronic dictionary A calculator, a game machine, or the like, or a liquid crystal display, a liquid crystal television, a Blu-ray disc recorder, a DVD recorder, or the like.

  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. The technical features described in each embodiment can be combined with each other, and a new technical feature can be formed by combining them.

1 Smartphone (electronic equipment)
2 display section
3 cabinets
3a Panel sticking part
3b Frame
3c bulge
3d resin injection hole
4 Translucent panel
4a Perimeter back
4b Peripheral side
5 Liquid crystal display
6 Double-sided tape
7 Filler
8 Anti-scattering film
9 Pressing sheet
10 Filling sheet
11 Antifouling coating

Claims (7)

A plate-like translucent panel;
A panel pasting part to which the back of the periphery of the translucent panel is pasted by a double-sided tape;
An electronic apparatus having a cabinet having a frame portion covering a peripheral side surface of the translucent panel with continuous to the panel bonding unit,
The back surface of the translucent panel is pasted to the panel pasting part via the double-sided tape,
An electronic apparatus, wherein a gap between a peripheral side surface of the translucent panel and an inner surface of the frame portion is filled with a filler that covers at least a part of the front surface of the translucent panel. The electronic device according to claim 1,
The front surface of the translucent panel is covered with a scattering prevention film,
A portion of the front surface of the translucent panel that is not covered with the scattering prevention film is covered with the filler. A translucent panel;
Manufacture of an electronic apparatus comprising: a panel pasting portion to which a peripheral back surface of the translucent panel is pasted by a double-sided tape; and a cabinet having a frame portion that is continuous with the panel pasting portion and covers a peripheral side surface of the translucent panel In the method
Affixing step of affixing the peripheral back of the translucent panel to the panel affixing part via the double-sided tape;
An electronic apparatus comprising: a filling step of filling a gap between the peripheral side surface of the translucent panel and the inner surface of the frame portion so as to cover at least a part of the front surface of the translucent panel; Manufacturing method. In the manufacturing method of the electronic device of Claim 3,
Including a step of attaching an anti-scattering film to the front surface of the translucent panel,
The said filling process WHEREIN: The part which is not covered with the said scattering prevention film of the front of the said translucent panel is covered with the said filler, The manufacturing method of the electronic device characterized by the above-mentioned. In the manufacturing method of the electronic device of Claim 4,
After the filling step, a sheet pressing step of pressing the filler with a pressing sheet;
A method for manufacturing an electronic device, further comprising a wiping step of peeling off the pressing sheet and wiping off the filler that has protruded in the sheet pressing step. In the manufacturing method of the electronic device of Claim 3 or 4,
Including a preparation step of preparing a filling sheet that has been subjected to water repellent treatment in an area excluding the panel pasting portion,
The filling step is
A patterning step of applying a filler to a portion of the filling sheet that has not been subjected to the water repellent treatment;
A sheet sticking step of pressing the filling sheet so that the filler is filled in the periphery of the translucent panel; and
And a UV curing step of curing the filler by applying ultraviolet rays from above the filling sheet. In the manufacturing method of the electronic device as described in any one of Claim 3 to 5,
The said filling process WHEREIN: The said filler is filled into the said clearance gap from the resin injection hole penetrated and formed in the back side of the said cabinet, The manufacturing method of the electronic device characterized by the above-mentioned.

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