JP2011043717A - Display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device in which a resin film is less likely to be detached from a glass plate even for a long term use. <P>SOLUTION: In the display device P, a second glass plate 6, which is oppositely arranged to a first glass plate 4 and an opaque or colored resin film 5 adhered to a portion of one side of the first glass plate 4 by a pressure sensitive adhesive layer 10 or the like so as to place the resin film 5 therebetween, is adhered by an active energy line curable resin 12 or the like. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a display device used for a mobile phone, a small game machine, and the like, and more specifically, a display device including a glass plate, and an opaque or colored resin film bonded to a part of one side of the glass plate. About.

  As prior art document information related to this type of display device, there is Patent Document 1 shown below. In the display device described in Patent Document 1, a resin film having a window-like opening formed in the vicinity of the center is bonded in a frame shape to one surface of a glass plate. By applying printing, the design of the apparatus can be improved. A liquid crystal type monitor device can be arranged under the display device.

JP 2003-140558 A (0021 paragraph, FIG. 1)

  However, in the configuration described in Patent Document 1, since the resin film is merely bonded to the back surface of the glass plate with a double-sided adhesive tape or the like, the resin film is irradiated through the glass plate, particularly when used for a long period of time. There was a risk that the double-sided adhesive tape would deteriorate due to the influence of ultraviolet rays and moisture or air entering from the gaps of the device, and the resin film could be peeled off from the glass plate.

  Accordingly, an object of the present invention is to provide a display device in which a resin film is less likely to be peeled off from a glass plate even when used for a long period of time, in view of the problems given by the conventional display device exemplified above.

  A first characteristic configuration display device of the present invention sandwiches a resin film between a first glass plate and an opaque or colored resin film bonded to a part of one surface of the first glass plate. Thus, the second glass plates arranged to face each other are bonded.

  In the display device according to the first characteristic configuration of the present invention, a resin film or an adhesive layer in which the resin film is integrated with a glass plate includes two glass plates (a first glass plate and a second glass plate) as a kind of rigid body. ) In a hermetically sealed manner during the long-term use, it becomes difficult for air and moisture to act on the adhesive layer, and the possibility of the resin film peeling off from the glass plate is effectively suppressed.

  Another feature of the present invention is that the second glass plate is bonded to the resin film and the remaining portion of the first glass plate by an active energy ray-curable resin.

  In this configuration, first, the resin film and the first glass plate are integrated by an appropriate bonding means, and then an active energy ray curable resin such as a photocurable resin is applied to the back surface of the integrated product. If the second glass plate is applied and covered, and after being positioned accurately and irradiated with an active energy ray such as ultraviolet rays, the resin film is formed while the second glass plate is aligned with the first glass plate. The second glass plate can be quickly integrated with the integrated object without causing a problem such as displacement with respect to the first glass plate. Moreover, in the above application step, the adhesive means is applied thicker than the resin film in the remaining portion of the first glass plate, but since an active energy ray curable resin is used as the adhesive means, There is no need to press the second glass plate, and the whole is cured at a uniform speed regardless of the difference in coating thickness, which is convenient.

  Another characteristic configuration of the present invention is that the resin film is bonded to the first glass plate by a pressure-sensitive adhesive layer.

  With this configuration, the integration of the resin film and the first glass plate, which is performed prior to the bonding step of the second glass plate, is performed by the pressure-sensitive adhesive layer instead of the active energy ray curable resin. The entire process of integrating the three components of 1 glass plate-resin film-second glass plate can be completed quickly.

  According to another characteristic configuration of the present invention, an electrostatic sensor is disposed on the other surface of the first glass plate, and the resin film is made of a frame-like opaque resin film that conceals a conductive pattern forming portion of the electrostatic sensor. It is in the point.

  With this configuration, the display device can have a touch panel function, and the conductive pattern forming portion of the electrostatic sensor is concealed by a frame-like opaque resin film, giving the display device a high beauty. be able to. In addition, when the electrostatic capacity sensor is attached to the back surface of the frame-shaped film with an adhesive layer or the like as in the configuration of Patent Document 1, since there is a stepped portion in the window portion of the frame-shaped film, there is a bubble bit in the adhesive layer. Although there is a tendency to occur, in the case of this configuration, it is only necessary to attach the capacitance sensor to the second glass plate that is flat as a whole.

1 is a perspective view of a mobile phone to which a display device according to the present invention is applied. It is a disassembled perspective view of the display apparatus used for the mobile phone of FIG. It is an expanded sectional view which shows a part of display apparatus of FIG.

EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated, referring drawings.
A mobile phone 1 shown in FIG. 1 as an embodiment including a display device according to the present invention includes a main body 2 having a keyboard, and a display 3 supported to be swingable with respect to the main body 2. A display device P is provided on the inner surface side of the display unit 3.

As shown in FIG. 2, the display device P includes a second glass plate 6 facing the outside, and on the back surface of the second glass plate 6, a frame-shaped ABS resin film 5 is sandwiched therebetween, One glass plate 4 is integrally attached.
A plate-like capacitance sensor 8 is integrally attached to the back surface of the first glass plate 4. Below the display device P composed of the second glass plate 6, the ABS resin film 5, the first glass plate 4, and the capacitance sensor 8, a liquid crystal type that functions in conjunction with the capacitance sensor 8. Monitor device (not shown) is provided.
Since the frame-shaped ABS resin film 5 is a white resin having a thickness exceeding 100 μm, the conductive pattern forming portion 8 p of the capacitance sensor 8 can be sufficiently concealed.

When assembling the display device P, first, the ABS resin film 5 is formed on the first glass plate 4 with a silicone pressure-sensitive adhesive resin sheet 10 (an example of a pressure-sensitive resin layer) cut into the same shape as the ABS resin film 5. Adhesive fixed (integrated) to the upper surface
Next, a photocurable resin 12 (an example of an active energy ray curable resin) is applied to the upper surfaces of the ABS resin film 5 and the first glass plate 4, and the second glass plate 6 is bonded to the coated surface. With the first glass plate 4 and the second glass plate 6 aligned accurately and fixed to each other, the photocurable resin 12 is irradiated with ultraviolet rays.
Through the above steps, the three members of the first glass plate 4, the ABS resin film 5, and the second glass plate 6 are accurately integrated in an intended positional relationship.

  From the circular through hole H provided in the vicinity of one side of each member of the first glass plate 4, the ABS resin film 5 and the second glass plate 6, a camera lens or LED (non-uniformity) provided in the main body 2 is provided. (Shown in the figure) or the like. As shown in FIG. 2, in order to configure the through hole H, a through hole having the same diameter is also formed at a corresponding portion of the capacitance sensor 8. When the ABS resin film 5 having the through holes H is integrated with the first glass plate 4 as described above, if a heat-meltable resin layer or the like is used as an adhesive means, the periphery of the through-hole H and the heat-meltable resin Foam biting is likely to occur at the boundary between layers, but since the silicone pressure-sensitive adhesive resin sheet 10 is used here, there is little risk of such bubble biting.

[Another embodiment]
<1> As the resin film interposed between the first glass plate 4 and the second glass plate 6, various opaque resin films including a polyester film in which a pigment is dispersed are used instead of the ABS resin film 5. It is possible to use.

<2> When the second glass plate 6 is bonded, a thermosetting resin (an example of an active energy ray curable resin) may be used instead of the photocurable resin, and is not limited to the active energy ray curable resin. It is possible to use other transparent adhesives or adhesive layers.

<3> The means for integrating the resin film with the first glass plate 4 is not limited to the silicone pressure-sensitive adhesive resin sheet, and various transparent adhesives, adhesive layers, and the like can be used.

<4> When the concealment of the conductive pattern forming portion 8p is insufficient with the ABS resin film 5 alone, it is previously placed at a position corresponding to the inner side of the window portion of the ABS resin film 5 on the upper surface of the second glass plate 6. It is preferable to apply a white paint by silk screen printing and heat-fix the white paint before adhering the ABS resin film 5.

<5> The through holes H formed in the second glass plate 6, the ABS resin film 5, the first glass plate 4, and the capacitance sensor 8 in the above embodiment are not necessarily provided.

<6> In the embodiment shown in FIG. 3, the conductive pattern forming portion 8p is arranged on the outermost surface of the capacitance sensor 8. However, if the cable can be bonded to the conductive pattern forming portion 8p, the conductive pattern forming portion 8p is conductive. You may arrange | position so that the pattern formation part 8p may come to the boundary of the electrostatic capacitance sensor 8 and the 1st glass 4. FIG.

  In a display device that can be used in a mobile phone or a small game machine, an opaque or colored resin film that enhances design is adhered to a part of one side of the glass plate. It can be used as a technique with little risk of peeling.

P Display device 1 Mobile phone 2 Main body 3 Display unit 4 First glass plate 5 ABS resin film 6 Second glass plate 8 Capacitance sensor 8p Conductive pattern forming unit 10 Silicone pressure-sensitive adhesive resin sheet (pressure-sensitive resin layer)
12 Photocurable resin (active energy ray curable resin)

Claims (4)

  A first glass plate and an opaque or colored resin film bonded to a part of one surface of the first glass plate are bonded to a second glass plate disposed so as to sandwich the resin film therebetween. Display device.   The display device according to claim 1, wherein the second glass plate is adhered to the resin film and the remaining portion of the first glass plate by an active energy ray curable resin.   The display device according to claim 1, wherein the resin film is bonded to the first glass plate by a pressure-sensitive adhesive layer.   The electrostatic sensor is arrange | positioned at the other surface of the 1st glass plate, The said resin film consists of a frame-shaped opaque resin film which conceals the conductive pattern formation part of the said electrostatic sensor. The display device according to one item.

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