JP2013152275A - Electronic apparatus - Google Patents

Abstract

Provided is a mechanism capable of easily peeling a display panel and a protection panel at the time of disassembly while reducing the size and cost of an electronic device.
A display unit of an electronic device is arranged on a display panel 4 having a display unit 4a and a frame member 4g that covers the periphery of the display unit 4a other than the display region, and the display panel 4 on the display region side. The protective panel 2 that protects the display panel 4 and the fixing member 5 that adheres and fixes the display panel 4 and the protective panel 2 are provided. The fixing member 5 is provided with a first double-sided tape 5b on the front surface and a second double-sided tape 5c having a lower adhesive strength than the first double-sided tape 5b on the back surface, and the first double-sided tape 5b is a display panel. The second double-sided tape 5c is adhered to the protective panel 2 by being adhered to the frame member 4g.
[Selection] Figure 4

Description

  The present invention relates to an electronic apparatus such as a digital camera provided with a display unit.

  Some display units mounted on electronic devices such as digital cameras use a double-sided tape to fix a protective panel such as a touch panel to the display panel.

  By the way, since the adhesive surface of the double-sided tape has the same adhesive strength on the display panel side and the protective panel side, an equal peeling force acts on the display panel and the protective panel when peeling at the time of disassembly.

  However, the rigidity of the display panel and the protection panel has been reduced due to the thinning of the display panel and the protection panel accompanying the recent miniaturization of electronic devices. For this reason, when disassembly is necessary due to foreign matters entering between the display panel and the protection panel, the display panel and the protection panel may be deformed and damaged by the peeling force.

  In view of this, a technique has been disclosed in which a touch panel and a display panel can be easily peeled with a tool such as a cutter by alternately laminating a plurality of layers of double-sided tape and release paper (Patent Document 1).

JP 2001-75494 A

  However, in Patent Document 1, the thickness is increased by alternately laminating the double-sided tape and the release paper, which increases the thickness of the display unit and prevents the electronic device from being downsized. In addition, since the man-hour for alternately laminating the double-sided tape and the release paper and the material cost of the double-sided tape and the release paper are also required, the cost of the electronic device is increased.

  In view of the above, an object of the present invention is to provide a mechanism capable of easily peeling the display panel and the protective panel at the time of disassembly while reducing the size and cost of the electronic device.

  In order to achieve the above object, the present invention is an electronic device including a display unit, wherein the display unit includes a display unit, and a display panel having a frame member that covers a periphery other than the display region of the display unit; A protective panel that is disposed on the display area side of the display panel and protects the display panel; and a fixing member that adheres and fixes the display panel and the protective panel. And a second double-sided tape having a lower adhesive strength than the first double-sided tape is provided on the back surface, the first double-sided tape is adhered to the frame member of the display panel, 2 double-sided tape is adhered to the protective panel.

  ADVANTAGE OF THE INVENTION According to this invention, a display panel and a protection panel can be easily peeled at the time of decomposition | disassembly, aiming at size reduction and cost reduction of an electronic device.

It is the figure which looked at the digital camera which is an example of embodiment of the electronic device of this invention from the back side. It is a disassembled perspective view of a display unit. It is a perspective view which shows the state before adhering and fixing a display panel and a touch panel using a fixing member. It is a fragmentary sectional view of the left-right direction in the display unit of the digital camera shown in FIG. It is a fragmentary sectional view of the up-down direction in the display unit of the digital camera shown in FIG.

  Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a view of a digital camera as an example of an embodiment of an electronic apparatus according to the present invention as seen from the back side, and FIG. 2 is an exploded perspective view of a display unit.

  As shown in FIGS. 1 and 2, the digital camera of the present embodiment is provided with a display unit 1 between the back cover 3 of the camera body 10 and the main chassis 6. The display unit 1 includes an elastic member 7, a touch panel 2, a fixing member 5, and a display panel 4 that are sequentially arranged from the back cover 3 toward the main chassis 6. For convenience of explanation, the touch panel 2, the display panel 4, the fixing member 5, and the elastic member 7 will be described in this order.

  The touch panel 2 includes an input unit 2a that receives a touch input by a user operation, a flexible printed circuit board 2b that derives a voltage signal based on the pressure sensitivity of the resistive film, and a base unit 2c to which the input unit 2a and the flexible printed circuit board 2b are attached. Is provided. Here, the touch panel 2 corresponds to an example of the protective panel of the present invention.

  In the present embodiment, the base portion 2c is made of glass having flexibility. The touch panel 2 is fitted to the back cover 3 with the input unit 2 exposed from the opening 3 a of the back cover 3, whereby the camera body 10 is positioned in the vertical direction.

  The display panel 4 includes a display unit 4a such as a liquid crystal. A glass substrate 4c on which a driving chip 4b is mounted is disposed on the side of the display unit 4a, and a display drive signal line is led to the glass substrate 4c. A flexible printed circuit board 4d is connected. The driving chip 4b corresponds to an example of the electric element of the present invention.

  A backlight holding member 4e that holds a backlight device (not shown) is provided on the back side of the display unit 4a, and the display surface side of the display unit 4a covers the periphery other than the display area of the display unit 4a. A rectangular frame member 4g is provided.

  A plurality of locking projections 4f are provided around the backlight holding member 4e, and a plurality of locking holes 4h corresponding to the plurality of locking projections 4f are provided in the frame member 4g. The backlight holding member 4e and the frame member 4g are fixed by locking the plurality of locking protrusions 4f in the plurality of locking holes 4h. An opening 4k corresponding to the driving chip 4b is formed in the frame member 4g, thereby avoiding interference with each other thickness and contributing to a reduction in the total thickness of the display panel 4.

  The fixing member 5 is formed in a rectangular frame shape, and is bonded and fixed to the touch panel 2 and the display panel 4 so as to seal between them and prevent intrusion of foreign matter or the like. Details of the fixing member 5 will be described later.

  A plurality of elastic members 7 are attached to the back cover 3, and when the back cover 3 is assembled to the main chassis 6, the base member 2c is compressed by the repulsive force between the base portion 2c of the touch panel 2 and the back cover 3. Push it into the main chassis 6 side. As a result, the touch panel 2 and the display panel 4 that are bonded and fixed to each other via the touch panel 2 and the fixing member 5 are pushed in the thickness direction of the digital camera 1 to prevent backlash.

  FIG. 3 is a perspective view showing a state before the display panel 4 and the touch panel 2 are bonded and fixed using the fixing member 5.

  The process of bonding and fixing the display panel 4 and the touch panel 2 using the fixing member 5 can be a separate process from the assembly process of the camera body 10. In this embodiment, after the fixing member 5 is bonded to the frame member 4 g of the display panel 4, the base portion 2 c of the touch panel 2 is bonded to the fixing member 5.

  4 is a partial cross-sectional view in the left-right direction of the display unit 1 of the digital camera shown in FIG. As described above, the flexible printed circuit board 4d is connected to the glass substrate 4c of the display panel 4, and the end of the frame member 4g is disposed at this connection portion. The end of the frame member 4g is bent approximately 180 ° by, for example, hemming bending or the like to form a reinforcing shape portion 4m. In addition to reinforcing the frame member 4g, the reinforcing shape portion 4m has an effect of preventing the flexible printed board 4d from being damaged by the bent portion.

  As for the fixing member 5, the double-sided tape 5b is affixed on the surface of PET sheet 5a as an example of a sheet-like base material, and the double-sided tape 5c whose adhesive strength is weaker than the double-sided tape 5b is affixed on the back surface of the PET sheet 5a. ing. Here, the double-sided tape 5b corresponds to an example of the first double-sided tape of the present invention, and the double-sided tape 5c corresponds to an example of the second double-sided tape of the present invention.

  In this embodiment, the adhesive strength of the double-sided tape 5b is about twice that of the double-sided tape 5c. Then, the display panel 4 and the touch panel are bonded by adhering the double-sided tape 5b having a strong adhesive force of the fixing member 5 to the frame member 4g of the display panel 4 and adhering the double-sided tape 5c having a low adhesive force to the base portion 2c of the touch panel 2. 2 is bonded and fixed.

  Here, when the double-sided tape 5b having a strong adhesive force of the fixing member 5 is bonded to the frame member 4g of the display panel 4, the fixing member 5 is attached to the outside of the opening 4k corresponding to the driving chip 4b of the frame member 4g ( It is arranged at the position on the right side of the figure so as to face the reinforcing shape portion 4m. This is because the reinforcing portion 4m cannot be formed in a limited space in the thickness direction because the display portion 4a is inside the opening 4k of the frame member 4g, and the rigidity of the frame member 4g is insufficient. It is.

  Then, when disassembly is required due to a foreign substance entering the gap between the touch panel 2 and the display panel 4, the outer shape portion of the base portion 2c of the flexible touch panel 2 is grasped and peeled off.

  At this time, since only the base portion 2c bonded with the double-sided tape 5c having low adhesive strength is peeled off, the fixing member 5 remains on the display panel 4 side bonded with the double-sided tape 5b having high adhesive strength. After removing the foreign matter or the like, there is no delamination of the fixing member 5, so that the base portion 2 c of the touch panel 2 can be bonded to the double-sided tape 5 c of the fixing member 5 again without replacing the fixing member 5.

  The reason why there is no delamination of the fixing member 5 is that the PET sheet 5a of the fixing member 5 and the glass base portion 2c of the touch panel 2 have a relatively strong adhesive force of the double-sided tape 5c. This is because the base portion 2c is peeled off before the PET sheet 5a.

  When the adhesive strength of the double-sided tapes 5b and 5c is made uniform, the display panel 4 follows the amount of bending of the base portion 2c at the time of disassembly, and the frame member 4g having rigidity lower than that of the base portion 2c is plastically deformed to hold the backlight. There is a possibility that the fitting with the member 4e is released. Similarly, when the strength of the adhesive force of the double-sided tapes 5b and 5c is reversed, the display panel 4 follows the amount of bending of the base portion 2c at the time of disassembling by the amount of low adhesive force, and is plastic to the frame member 4g. Deformation may occur.

  In this embodiment, the thickness of the PET sheet 5a of the fixing member 5 is made thicker than that of the double-sided tapes 5b and 5c, and a gap is secured between the display unit 4a of the display panel 4 and the base unit 2c of the touch panel 2. doing. Thereby, generation | occurrence | production of interference fringes, such as a Newton ring, which arises when a display part 4a and the base part 2c contact by deformation | transformation etc. can be prevented.

  FIG. 5 is a partial sectional view in the vertical direction of the display unit 1 of the digital camera shown in FIG. As shown in FIG. 5, the periphery of the frame member 4g is bent at a substantially right angle to ensure the strength, and the aforementioned locking hole 4h is formed in this bent portion. The locking holes 4h are provided at a plurality of positions on three sides other than the side where the opening 4k of the frame member 4b is formed. The frame member 4g and the backlight holding member 4e are firmly coupled to each other by locking the locking protrusions 4f of the backlight holding member 4e formed corresponding to the locking holes 4h. This prevents deformation during disassembly.

  As described above, in the present embodiment, the adhesive strength of the double-sided tapes 5b and 5c arranged on the front and back surfaces of the fixing member 5 is made different, and the strong adhesive double-sided tape 5b is adhered to the display panel 4 to thereby provide the adhesive strength. A weak double-sided tape 5c is adhered to the touch panel 2. Thereby, the display panel 4a and the touch panel 2 can be easily peeled off at the time of disassembly while reducing the size and cost of the digital camera.

  The configuration of the present invention is not limited to that exemplified in the above embodiment, and the material, shape, dimensions, form, number, arrangement location, and the like can be changed as appropriate without departing from the scope of the present invention. It is.

DESCRIPTION OF SYMBOLS 1 Display unit 2 Touch panel 4 Display panel 4a Display part 4g Frame member 5 Fixing member 5a PET sheet 5b Double-sided tape 5c Double-sided tape

Claims (4)

An electronic device comprising a display unit,
The display unit is
A display panel having a display unit and a frame member that covers the periphery of the display unit other than the display area;
A protective panel that is disposed on the display area side of the display panel and protects the display panel;
A fixing member for bonding and fixing the display panel and the protective panel;
The fixing member is provided with a first double-sided tape on the front surface and a second double-sided tape whose adhesive strength is weaker than that of the first double-sided tape on the back surface,
The electronic device, wherein the first double-sided tape is bonded to the frame member of the display panel, and the second double-sided tape is bonded to the protective panel.   2. The electronic device according to claim 1, wherein the display panel includes an electrical element mounted on a side portion of the display unit, and an opening corresponding to the electrical element is formed in the frame member. The frame member has a reinforcing shape portion at a position outside the opening,
The electronic device according to claim 2, wherein the fixing member is disposed to face the reinforcing shape portion.   The fixing member is provided with the first double-sided tape on the surface of the sheet-like base material, and the second double-sided tape is provided on the back surface of the sheet-like base material. 4. The electronic device according to claim 1, wherein the electronic device is formed thicker than the first and second double-sided tapes.

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