JP6432111B2 - Electronic equipment and touch panel unit - Google Patents

Description

  The technology disclosed in the present application relates to an electronic device and a touch panel unit.

  There is an electronic device that includes a touch panel that outputs a signal according to a user's touch operation and a wiring member that extends from the touch panel (see, for example, Patent Document 1). In the conventional electronic device including the touch panel and the wiring member, the wiring member extends outward from the outer edge of the touch panel, and the leading end side of the wiring member is folded back to the back side of the touch panel. Yes.

JP 2010-61026 A

  In the conventional electronic device, the size of the device including the touch panel and the wiring member is increased by the amount that the wiring member extends outward from the outer edge of the touch panel.

  An object of the technology disclosed by the present application is to downsize a device including a touch panel and a wiring member as one aspect.

In order to achieve the above object, an electronic apparatus according to a technique disclosed in the present application includes a touch panel, a display, a wiring member, and a control board. The display device is arranged to face the back surface of the touch panel, and any one of the outer edge portions is located inside the outer edge portion of the touch panel corresponding to the outer edge portion. The wiring member has an extending portion that extends from the back surface of the touch panel to the outer edge side of the touch panel, and a folded portion that is folded back from the distal end portion of the extending portion to the back surface of the touch panel with respect to the extending portion. The control board is connected to the folded portion and is disposed between the outer edge of the touch panel and the outer edge of the display. The wiring member is movable in a direction away from the back surface of the touch panel with the connection portion with the touch panel as a fulcrum in a state where the control board is connected to the folded portion.

  According to the technology disclosed in the present application, a device including a touch panel and a wiring member can be reduced in size.

It is a perspective view of a notebook type personal computer. It is a disassembled perspective view of the display apparatus except a back cover. It is a rear view of a housing frame. It is a perspective view of a touch panel in the state where FPC was extended. It is an enlarged view of the FPC peripheral part in the state which extended FPC. It is the 4C-4C sectional view taken on the line of FIG. 4B. It is a perspective view of a touch panel in the state where FPC was turned up. It is an enlarged view of the FPC peripheral part in the state which turned up FPC. It is the 5C-5C sectional view taken on the line of FIG. 5B. It is the 5D-5D sectional view taken on the line of FIG. 5B. It is a perspective view of a touch panel in the state where FPC was lifted. It is an enlarged view of the FPC peripheral part in the state which lifted FPC. It is the 6C-6C sectional view taken on the line of FIG. 6A. It is a perspective view which shows the process in which a housing frame is attached to a touch panel. It is an enlarged view of the FPC peripheral part in the process of attaching a housing frame to a touch panel. It is the 7C-7C line sectional view of Drawing 7A. It is the 7D-7D sectional view taken on the line of FIG. 7A. It is a perspective view which shows the state which attached the housing | frame frame to the touchscreen. It is an enlarged view of the FPC peripheral part in the state which attached the housing | frame frame to the touchscreen. It is the 8C-8C sectional view taken on the line of FIG. 8A. It is the 8D-8D sectional view taken on the line of FIG. 8A. It is a perspective view which shows the state which attached the indicator to the housing frame. It is an enlarged view of the FPC peripheral part in the state which attached the indicator to the housing frame. It is the 9C-9C sectional view taken on the line of FIG. 9A. It is a figure which shows the modification of FPC periphery part.

  Hereinafter, an embodiment of the technology disclosed in the present application will be described.

  A notebook personal computer 10 of this embodiment shown in FIG. 1 is an example of “electronic device”, and includes a main body device 12 and a display device 14. The main unit 12 is provided with input devices such as a keyboard 16 and a touch pad 18, and a main board, a battery, and the like are incorporated therein.

  The display device 14 is attached to the main body device 12 so as to be opened and closed. In FIG. 1, the display device 14 is shown in an open state. An arrow X, an arrow Y, and an arrow Z shown in each figure indicate the horizontal direction, the vertical direction, and the thickness direction of the display device 14, respectively.

  As shown in FIG. 2, the display device 14 includes a touch panel 20, an adhesive layer 22, a housing frame 24, and a display 26. In FIG. 2, the illustration of the back cover 28 in the display device 14 shown in FIG. 1 is omitted. For the display device 26, for example, a liquid crystal display device is used. The touch panel 20 and the display device 26 are formed in a rectangular flat plate shape, and the housing frame 24 is formed in a rectangular frame shape corresponding to the rectangular shape of the touch panel 20 and the display device 26.

  The housing frame 24 is fixed to the back surface of the touch panel 20 via the adhesive layer 22, and the display 26 is attached to the housing frame 24 from the side opposite to the touch panel 20. The housing frame 24 that supports the touch panel 20 and the display 26 has an upper frame portion 30, a lower frame portion 32, and a pair of left and right vertical frame portions 34. The adhesive layer 22 is formed of a housing frame. A plurality of adhesive materials 40, 42, and 44 corresponding to the 24 frame portions are provided.

  FIG. 3 shows a state where the adhesive materials 40, 42, 44 are attached to the frame portions of the housing frame 24. As shown in FIG. 3, each adhesive material 40, 42, 44 is formed in a long shape corresponding to each frame portion of the housing frame 24.

  As shown in FIG. 4A, the touch panel 20 is provided with a control board 46. The control board 46 includes a printed board 48, a mounting component group 50, and a connector 52. The mounting component group 50 includes electronic components such as semiconductor chips. The mounting component group 50 and the connector 52 are mounted on the printed circuit board 48.

  The printed circuit board 48 is formed in a long shape extending along the lower edge portion 54 of the touch panel 20, and the mounting component group 50 and the connector 52 are arranged side by side in the longitudinal direction of the printed circuit board 48. The connector 52 is arranged such that the direction in which the lower edge portion 54 of the touch panel 20 extends (that is, the longitudinal direction of the printed circuit board 48) is the horizontal width direction.

  As shown in FIG. 4B, a flexible printed board 58 that is an example of a “wiring member” is connected to the back surface 56 of the touch panel 20. Hereinafter, the flexible printed circuit board 58 is abbreviated as an FPC 58 (Flexible printed circuits). The FPC 58 is arranged with the direction in which the lower edge portion 54 of the touch panel 20 extends as the horizontal width direction. The FPC 58 is electrically connected to a plurality of electrodes for contact detection provided on the surface of the touch panel 20.

  As shown in FIG. 4C, a terminal portion 60 is formed at the distal end portion of the FPC 58, and the terminal portion 60 is connected to the connector 52. In a state in which the FPC 58 extends straight, the front end portion side (terminal portion 60 side) of the FPC 58 and the control board 46 protrude from the lower edge portion 54 of the touch panel 20.

  In the continuity test of the FPC 58, the FPC 58 is straightened and the front end side of the FPC 58 protrudes from the lower edge portion 54 of the touch panel 20. In this state, the test probe contacts the terminal portion 60, and the continuity of the FPC 58 is tested. The In the state where the control board 46 is connected to the terminal part 60 of the FPC 58, the front end part side of the FPC 58 and the control board 46 protrude from the lower edge part 54 of the touch panel 20, and the terminal part 60 or the control board 46 is in this state. A test probe may be contacted.

  An adhesive member 62 is bonded to the control board 46 on the side opposite to the connector 52. As shown in FIG. 4B, the adhesive member 62 is formed with substantially the same width as the FPC 58 and is located on the back side of the connector 52. In the present embodiment, the touch panel 20, the control board 46, and the FPC 58 form a touch panel unit 64.

  As shown in FIGS. 5A to 5C, in the touch panel unit 64, the control board 46 is arranged on the back side of the touch panel 20 by folding the front end portion side of the FPC 58 by 180 °. 5C, in a state where the FPC 58 is folded and the control board 46 is disposed on the back side of the touch panel 20, the FPC 58 more specifically includes an extension part 66 and a folding part 68. .

  That is, the extending portion 66 is a portion of the FPC 58 that extends from the back surface 56 of the touch panel 20 to the lower edge portion 54 side of the touch panel 20. Further, the folded portion 68 is a portion of the FPC 58 that is folded from the distal end portion of the extending portion 66 to the side opposite to the back surface 56 of the touch panel 20 with respect to the extending portion 66. A bent portion 70 that is curved is formed between the extending portion 66 and the folded portion 68, and the FPC 58 has a U-shape as a whole when bent.

  The connection part 72 with the touch panel 20 in the FPC 58 is located on the inner side (vertical center side of the touch panel 20) than the lower edge part 54 of the extension part 66. The lower edge portion 54 of the touch panel 20 is an example of an “outer edge portion of the touch panel”, and a terminal portion 60 is formed on the distal end side of the folded portion 68. In a state where the terminal part 60 is connected to the connector 52 of the control board 46, the control board 46 is bonded to the extension part 66 via the adhesive member 62. The adhesive member 62 is not a thin double-sided tape but has a certain thickness.

  As shown in FIG. 5B, the control board 46 extends along the lower edge portion 54 of the touch panel 20 in a state where the FPC 58 is folded. The FPC 58 is arranged so as to be biased to one side in the length direction of the control board 46, and the control board 46 has an extension 74 that extends in the direction in which the lower edge portion 54 of the touch panel 20 extends with respect to the FPC 58. As shown in FIG. 5D, the thickness of the adhesive member 62 and the extension portion 66 described above is between the extension portion 74 (the portion without the FPC 58) of the control board 46 and the back surface 56 of the touch panel 20. A corresponding gap 76 is formed.

  Since the adhesive member 62 is formed with a length corresponding to the FPC 58 as described above, the extension 74 is not bonded to the back surface 56 of the touch panel 20 as shown in FIG. 5D. Therefore, as shown in FIGS. 6A to 6C, the FPC 58 is separated from the back surface 56 of the touch panel 20 with the connection portion 72 as a fulcrum in a state where the control board 46 is connected to the folded portion 68 ( It moves in the direction of arrow R). That is, the FPC 58 can be lifted in a direction away from the back surface 56 of the touch panel 20 with the connection portion 72 with the touch panel 20 as a fulcrum.

  When the FPC 58 is lifted using the connection portion 72 with the touch panel 20 as a fulcrum, the curvature radius of the bent portion 70 of the FPC 58 is secured so that the FPC 58 is not disconnected. In the present embodiment, the thicknesses of the printed circuit board 48 and the adhesive member 62 are set so that the radius of curvature of the bent portion 70 of the FPC 58 is ensured.

  As shown in FIGS. 7A to 7C, the housing frame 24 is assembled to the back surface 56 of the touch panel 20 in a state where the FPC 58 is lifted with the connection portion 72 with the touch panel 20 as a fulcrum.

  As shown in FIG. 2, the lower frame portion 32 of the housing frame 24 extends along the lower edge portion 54 of the touch panel 20. The lower frame portion 32 of the housing frame 24 is an example of a “frame portion”. More specifically, the lower frame portion 32 of the housing frame 24 includes an adhesive portion 80 and a notch 82. The bonding portion 80 is formed at a position corresponding to the extension portion 74 of the control board 46, and the notch 82 is formed adjacent to the bonding portion 80 and at a position corresponding to the FPC 58. In FIG. 2, the FPC 58 is shown in a folded state.

  As shown in FIG. 7C, when the housing frame 24 is assembled to the touch panel 20, a notch 82 is located at a position corresponding to the FPC 58, and the FPC 58 is inserted into the notch 82. The notch 82 has a width and shape that can accommodate the FPC 58.

  Further, as shown in FIG. 7D, when the housing frame 24 is assembled to the touch panel 20, a position corresponding to the extension 74 of the control board 46 is formed on the lower frame portion 32 of the housing frame 24. The adhesive part 80 is located. In a state in which the FPC 58 is lifted with the connection portion 72 with the touch panel 20 as a fulcrum, the adhesive portion 80 has a vertical direction of the touch panel 20 between the extension portion 74 and the lower end portion 78 of the touch panel 20 facing the extension portion 74. Are inserted from the lower side (the lower edge 54 side). At this time, the extension 74 (see also FIG. 7B) of the control board 46 gets over the bonding portion 80.

  As shown in FIGS. 8A and 8B, the housing frame 24 is disposed so as to overlap the back surface 56 of the touch panel 20. In a state where the housing frame 24 is superimposed on the back surface 56 of the touch panel 20, the FPC 58 that has been lifted using the connection portion 72 with the touch panel 20 as a fulcrum is returned to its original position.

  As shown in FIG. 8C, the FPC 58 is accommodated in the notch 82 in a state where the FPC 58 is returned to the original position. The extension portion 66 of the FPC 58 is in contact with the back surface 56 of the touch panel 20. However, in this embodiment, the extension portion 66 of the FPC 58 is not bonded to the back surface 56 of the touch panel 20. .

  8D, in a state where the FPC 58 is returned to the original position, the adhesive portion 80 is inserted between the extension portion 74 and the touch panel 20, and the adhesive portion 80 is attached to the adhesive material 42 ( 2), the touch panel 20 is adhered to the back surface 56 (the back surface of the lower end portion 78). Further, the extension portion 74 is bonded to the bonding portion 80 by the adhesive material 84 from the side opposite to the back surface 56 of the touch panel 20.

  As shown in FIGS. 9A and 9B, the display device 26 is disposed to face the back surface of the touch panel 20. The display 26 is formed to have a slightly smaller outer shape than the touch panel 20. As shown in FIG. 9C, in a state where the display device 26 is disposed to face the back surface 56 of the touch panel 20, the lower edge portion 86 of the display device 26 is located on the inner side of the lower edge portion 54 of the touch panel 20 (display device). 26 in the longitudinal center). The lower edge portion 86 of the display device 26 is an example of “any external edge portion of the display device”.

  As shown in FIG. 9C, in a state where the display device 26 is disposed so as to face the back surface 56 of the touch panel 20, the control board 46 is connected to the lower edge portion 54 of the touch panel 20 and the lower edge portion 86 of the display device 26. It is arranged at 88. The width (the width of the printed circuit board 48) along the vertical direction of the touch panel 20 is set so that the control board 46 is disposed between the lower edge 54 of the touch panel 20 and the lower edge 86 of the display 26. Has been.

  Further, in a state where the display device 26 is disposed so as to face the back surface 56 of the touch panel 20, the control board 46 falls within the range 90 in the thickness direction of the display device 26. The control board 46 has a thickness along the thickness direction of the display unit 26 (the thickness of the printed circuit board 48, the mounting component group 50, the height of the connector, etc.) so that it falls within the range 90 of the display unit 26 in the thickness direction. Is set.

  Next, the operation and effect of this embodiment will be described.

  According to the present embodiment, the FPC 58 connected to the back surface 56 of the touch panel 20 is connected to the back surface 56 of the touch panel 20 with respect to the extended portion 66 from the distal end portion of the extended portion 66 extending to the lower edge portion 54 side of the touch panel 20. It has the folding | returning part 68 folded by the other side. The control board 46 is connected to the folded portion 68, and the control board 46 is disposed 88 between the lower edge portion 54 of the touch panel 20 and the lower edge portion 86 of the display 26. Therefore, for example, the display device 14 can be downsized in the vertical direction as compared with the case where the FPC 58 and the control board 46 protrude from the lower edge portion 54 of the touch panel 20.

  In addition, the control board 46 disposed between the lower edge portion 54 of the touch panel 20 and the lower edge portion 86 of the display device 26 is within the range 90 in the thickness direction of the display device 26. Therefore, the display device 14 can be downsized in the thickness direction.

  7A to 7D, the FPC 58 is separated from the back surface 56 of the touch panel 20 with the connection part 72 as a fulcrum in a state where the control board 46 is connected to the folded part 68 ( It moves in the direction of arrow R). Therefore, when attaching the housing frame 24 to the touch panel 20, as shown in FIG. 7D, the FPC 58 is lifted with the connection part 72 with the touch panel 20 as a fulcrum, and the adhesive part 80 is connected to the extension part 74 and the touch panel 20. It can be inserted between the lower end portion 78. Thereby, the workability | operativity at the time of attaching the housing | casing frame 24 to the touchscreen 20, and the assembly property of the display apparatus 14 by extension can be improved.

  Further, as illustrated in FIG. 8D, the bonding portion 80 inserted between the extension portion 74 and the touch panel 20 is bonded to the back surface 56 of the touch panel 20 with the adhesive material 42. Therefore, the bonding area between the lower frame portion 32 of the housing frame 24 and the touch panel 20 can be secured by the amount of the adhesive portion 80. As a result, the rigidity of the lower frame portion 32 of the housing frame 24 can be ensured, so that rattling of the lower frame portion 32 can be suppressed, and the lower frame portion 32 bends from the lower edge portion 54 of the touch panel 20. Separation can be suppressed.

  Furthermore, since the extended portion 74 of the control board 46 is bonded to the bonding portion 80 by the adhesive material 84, the rattling of the control board 46 can be suppressed.

  Further, as shown in FIG. 8C, the control board 46 is bonded to the extending portion 66 by the adhesive member 62. Therefore, when attaching the housing frame 24 to the touch panel 20, the FPC 58 can be prevented from returning to its original shape due to the restoring force of the FPC 58, and the FPC 58 can be held in a folded shape. As a result, the FPC 58 can be lifted with the connecting portion 72 with the touch panel 20 as a fulcrum while the FPC 58 is held in a folded shape, so that workability when attaching the housing frame 24 to the touch panel 20 can be improved.

  Further, a notch 82 is formed in the lower frame portion 32 of the housing frame 24 at a position corresponding to the FPC 58, and the FPC 58 is accommodated in the notch 82. Therefore, the FPC 58 can be prevented from being folded back in a narrow space, so that a large radius of curvature at the bent portion 70 of the FPC 58 can be secured. Thereby, disconnection of the FPC 58 can be suppressed.

  Next, a modification of this embodiment will be described.

  In the present embodiment, a notebook personal computer has been described as an example of the “electronic device”. However, the structure of the display device 14 may be applied to an electronic device other than the notebook personal computer. That is, the said structure of the display apparatus 14 in this embodiment may be applied to a mobile phone, a smart phone, a tablet terminal, and other electronic devices having a touch panel and a display, for example.

  In the present embodiment, the FPC 58 is used as an example of the “wiring member”, but a wiring member other than the FPC may be used.

  The extension portion 66 of the FPC 58 extends to the lower edge portion 54 side of the touch panel 20 as an example of the “outer edge portion of the touch panel”. It may extend to the side of either the edge or the pair of vertical edges. In addition, the control board 46 may also be disposed between any outer edge of the touch panel 20 and the outer edge of the display 26 corresponding to the outer edge.

  Further, as shown in FIG. 9C, the entire control board 46 is preferably within the range 90 in the thickness direction of the display 26. However, the portion below the upper part of the control board 46 falls within the range 90 in the thickness direction of the display unit 26, and the upper part of the control board 46 protrudes from the range 90 in the thickness direction of the display unit 26. Also good.

  In the present embodiment, a notch 82 (see FIG. 8C) is preferably formed in the lower frame portion 32 of the housing frame 24 at a position corresponding to the FPC 58. However, as shown in FIG. 10, the notch may be omitted from the lower frame portion 32. Further, the adhesive part 80 of the lower frame part 32 may be inserted between the control board 46 and the touch panel 20 also on the back side of the connector 52. If comprised in this way, the part by which the notch was omitted from the lower frame part 32 can increase the bonding area of the lower frame part 32 and the touch panel 20.

  In the present embodiment, the touch panel 20 and the display 26 are formed in a rectangular shape, but may be formed in a shape other than a rectangular shape, such as a circle or an ellipse.

  As mentioned above, although one embodiment of the technique disclosed in the present application has been described, the technique disclosed in the present application is not limited to the above, and various modifications may be made without departing from the spirit of the present invention. Of course, it is possible.

  In addition, the following additional remark is disclosed regarding one Embodiment of the technique which the above-mentioned this application discloses.

(Appendix 1)
A touch panel;
A display that is disposed opposite to the back surface of the touch panel, and any one of the outer edges is located inside the outer edge of the touch panel corresponding to the outer edge,
An extending portion extending from the back surface of the touch panel to the outer edge portion side of the touch panel; and a folded portion that is folded back from the distal end portion of the extending portion to the back surface of the touch panel with respect to the extending portion. A wiring member;
A control board connected to the folded portion and disposed between the outer edge of the touch panel and the outer edge of the display;
Electronic equipment comprising.
(Appendix 2)
The control board is within a range in the thickness direction of the display;
The electronic device according to attachment 1.
(Appendix 3)
The outer edge of the touch panel and the outer edge of the display are the lower edge of the touch panel and the lower edge of the display, respectively.
The electronic device according to Supplementary Note 1 or Supplementary Note 2.
(Appendix 4)
The wiring member is a flexible printed board having a horizontal width direction in which the outer edge of the touch panel extends.
The electronic device according to any one of appendix 1 to appendix 3.
(Appendix 5)
The control board has an extended portion extended in a direction in which the outer edge of the touch panel extends with respect to the wiring member,
The wiring member is movable in a direction away from the back surface of the touch panel with the connection portion with the touch panel as a fulcrum in a state where the control board is connected to the folded portion.
The electronic device according to any one of appendix 1 to appendix 4.
(Appendix 6)
A housing frame that supports the touch panel and the display;
The housing frame has an adhesive portion that is inserted between the extension portion and the touch panel and adhered to the back surface of the touch panel.
The electronic device according to attachment 5.
(Appendix 7)
The extension is non-adhered to the back surface of the touch panel.
The electronic device according to attachment 6.
(Appendix 8)
The extension portion is bonded to the bonding portion,
The electronic device according to appendix 6 or appendix 7.
(Appendix 9)
The housing frame has a frame portion that extends along the outer edge portion of the touch panel and is formed with the adhesive portion.
The frame portion has a notch in which the wiring member is accommodated.
The electronic device according to any one of appendix 6 to appendix 8.
(Appendix 10)
An adhesive member for adhering the control board to the extension part;
The electronic device according to any one of appendix 1 to appendix 9.
(Appendix 11)
A touch panel;
An extension part extending from the back surface of the touch panel to the side of any outer edge of the touch panel, and folded from the front end part of the extension part to the opposite side of the back side of the touch panel with respect to the extension part. A wiring member having a folded portion formed with a terminal portion;
Touch panel unit with
(Appendix 12)
The wiring member is a flexible printed circuit board having a width direction in a direction in which the outer edge extends, and is movable in a direction away from the back surface of the touch panel with a connection portion with the touch panel as a fulcrum.
The touch panel unit according to appendix 11.

10 Notebook personal computer (an example of electronic equipment)
14 Display device 20 Touch panel 24 Housing frame 26 Display 32 Lower frame portion (an example of a frame portion of the housing frame)
42 Adhesive material 46 Control board 54 Lower edge (an example of the outer edge of the touch panel)
56 Back 58 Flexible Printed Circuit Board / FPC (Example of Wiring Member)
60 Terminal part 62 Adhesive member 64 Touch panel unit 66 Extension part 68 Folding part 72 Connection part 74 Extension part 86 Lower edge part (an example of outer edge part of display)

Claims (6)

A touch panel;
A display that is disposed opposite to the back surface of the touch panel, and any one of the outer edges is located inside the outer edge of the touch panel corresponding to the outer edge,
An extending portion extending from the back surface of the touch panel to the outer edge portion side of the touch panel; and a folded portion that is folded back from the distal end portion of the extending portion to the back surface of the touch panel with respect to the extending portion. A wiring member;
A control board connected to the folded portion and disposed between the outer edge of the touch panel and the outer edge of the display;
Equipped with a,
The wiring member is movable in a direction away from the back surface of the touch panel with the connection portion with the touch panel as a fulcrum in a state where the control board is connected to the folded portion.
Electronics. The control board is within a range in the thickness direction of the display;
The electronic device according to claim 1. A housing frame that supports the touch panel and the display ;
The control board has an extended portion extended in a direction in which the outer edge of the touch panel extends with respect to the wiring member,
The housing frame has an adhesive portion that is inserted between the extension portion and the touch panel and adhered to the back surface of the touch panel.
The electronic device according to claim 1 or 2. The extension portion is bonded to the bonding portion,
The electronic device according to claim 3. The housing frame has a frame portion that extends along the outer edge portion of the touch panel and is formed with the adhesive portion.
The frame portion has a notch in which the wiring member is accommodated.
The electronic device according to claim 3 or claim 4. An adhesive member for adhering the control board to the extension part;
The electronic device as described in any one of Claims 1-5.