TWI622331B - Electronic device - Google Patents

Abstract

An electronic device includes a panel and a flexible circuit board component. Flexible circuit board components include flexible circuit boards and colloids. One end of the flexible circuit board is electrically connected to the edge of the upper surface of the panel, and the other end of the flexible circuit board is bent and fixed to the lower surface of the panel opposite to the upper surface. The flexible circuit board component also includes a first bond. The first adhesive portion is detachably disposed on an inner surface of the flexible circuit board and covers an inner surface of the flexible circuit board at a bent position. The colloid is filled between the first bonding portion and the panel, and corresponds to the bent portion of the flexible circuit board for maintaining the degree of bending of the flexible circuit board.

Description

Electronic device

The present invention relates to an electronic device, and more particularly to an electronic device having a flexible circuit board.

In existing electronic devices, there are usually panels and flexible circuit boards. One end of the flexible circuit board is electrically connected to the upper surface of the panel, and the other end is bent and fixed to the lower surface of the panel to reduce the overall thickness of the electronic device. Glue is provided in the space corresponding to the bend of the flexible circuit board to maintain the degree of bending of the flexible circuit board. Since the glue cannot be removed, the flexible circuit board cannot be reused, which increases the production cost.

In view of this, it is necessary to provide a reusable electronic device.

An electronic device includes a panel and a flexible circuit board component. Flexible circuit board components include flexible circuit boards and colloids. One end of the flexible circuit board is electrically connected to the edge of the upper surface of the panel, and the other end of the flexible circuit board is bent and fixed to the lower surface of the panel opposite to the upper surface. The flexible circuit board component also includes a first bond. The first adhesive portion is detachably disposed on an inner surface of the flexible circuit board and covers an inner surface of the flexible circuit board at a bent position. The colloid is filled between the first bonding portion and the panel, and corresponds to the bent portion of the flexible circuit board for maintaining the degree of bending of the flexible circuit board.

Compared with the prior art, the electronic device provided by the present invention provides a peelable first bonding portion between the flexible circuit board and the colloid, so that the colloid can be separated from the flexible circuit board by an external force, thereby making the softness The board can be reused.

100,500,700‧‧‧ electronic devices

10‧‧‧ Cover

20‧‧‧colloid layer

40, 50‧‧‧ panel

41‧‧‧Touch panel

42‧‧‧ display panel

60,70‧‧‧Soft circuit board components

61,71‧‧‧Printed circuit board

63,73‧‧‧Soft circuit board

631,731‧‧‧First connection

632,732‧‧‧Second connection

635,735‧‧‧Bend

65,75‧‧‧ colloid

67,77‧‧‧bonding layer

672,772‧‧‧First Bonding

773‧‧‧ first gap

674,774‧‧‧Second bond

775‧‧‧ second gap

90‧‧‧Frame

1 is a perspective view of an electronic device of a first embodiment.

2 is an exploded view of the electronic device of FIG. 1.

3 is a schematic view of the electronic device removal frame of FIG. 1.

4 is a cross-sectional view of the electronic device of the first embodiment of FIG. 3 taken along the IV-IV direction.

FIG. 5 is a cross-sectional view of the electronic device of the second embodiment of FIG. 3 taken along the IV-IV direction.

Figure 6 is an exploded view of the electronic device of the third embodiment of Figure 1.

Figure 7 is a cross-sectional view of the electronic device of Figure 5 taken along the line VII-VII.

The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

Please refer to FIG. 1 , which is a perspective view of an electronic device 100 according to a preferred embodiment.

Please refer to Figure 2 and Figure 3 together. The electronic device 100 can be a touch display device including a cover 10 , a colloid layer 20 , a panel 40 , a flexible circuit board component 60 , and a frame 90 . The cover 10, the gel layer 20, the panel 40, and the flexible circuit board component 60 are sequentially stacked. Specifically, the panel 40 is used to adhere to the cover 10 by the glue layer 20, and the flexible circuit board component 60 is electrically connected to the panel 40. The panel 40 is disposed between the cover 10 and the flexible circuit board component 60. . The cover plate 10 is disposed above the frame 90 for enclosing the frame 40 and the flexible circuit board component 60 with the frame 90.

The panel 40 includes a touch panel 41 and a display panel 42. The touch panel 41 is adhered to the cover 10 by the colloid layer 20 . The display panel 42 is disposed on a side of the touch panel 41 away from the cover 10 . The flexible circuit board component 60 is electrically connected to the touch panel 41. In other alternative embodiments, the panel 40 can be a fingerprint recognition panel, a display panel, a touch panel, an in-cell touch display panel, and the like.

Referring to FIG. 4 together, the flexible circuit board component 60 includes a printed circuit board 61, a flexible circuit board 63, a colloid 65, and an adhesive layer 67.

The printed circuit board 61 is substantially in the form of a thin plate. The printed circuit board 61 is disposed on a side of the panel 40 away from the cover 10. The printed circuit board 61 is used to supply voltage to the panel 40.

One end of the flexible circuit board 63 is electrically connected to the upper surface of the touch panel 41, and the other end is bent and fixed to the lower surface of the display panel 42 and electrically connected to the printed circuit board 61. The flexible circuit board 63 includes a first connection portion 631, a second connection portion 632, and a bent portion 635. The first connecting portion 631 and the second connecting portion 632 are disposed in parallel, and the bent portion 635 is electrically connected between the first connecting portion 631 and the second connecting portion 632.

The first connection portion 631 is fixed to the lower surface of the display panel 42. The second connecting portion 632 is electrically connected to the upper surface of the touch panel 41 . The bent portion 635 has a substantially "C" shape for establishing an electrical connection between the first connecting portion 631 and the second connecting portion 632.

The colloid 65 is filled between the flexible circuit board 63 and the panel 40 and is disposed corresponding to the bent portion 635. The colloid 65 is used to maintain the degree of bending of the bent portion 635. In the present embodiment, the colloid 65 is a glue of epoxy resin or acrylate.

The adhesive layer 67 covers the flexible circuit board 63 and is detachable from the flexible circuit board 63 by an external force. In the present embodiment, the thickness of the adhesive layer 67 ranges from 5 to 500 μm.

The adhesive layer 67 includes a first adhesive portion 672 and a second adhesive portion 674. The first adhesive portion 672 and the second adhesive portion 674 correspond to different peeling forces, and the peeling force corresponding to the first adhesive portion 672 is greater than the peeling force corresponding to the second adhesive portion 674.

The first adhesive portion 672 is interposed between the colloid 65 and the bent portion 635. The first bonding portion 672 integrally bonds the colloid 65 and the bent portion 635 to maintain the degree of bending of the bent portion 635. Preferably, the first adhesive portion 672 has a peeling force greater than 1.5 N/cm.

The second bonding portion 674 is interposed between the panel 40 and the first connecting portion 631 . The second bonding portion 674 integrally bonds the bottom of the panel 40 and the first connecting portion 631 to prevent the display panel 42 from moving relative to the first connecting portion 631. Preferably, the second adhesive portion 674 has a peeling force of less than 1.5 N/cm.

Please refer to FIG. 5 , which is an electronic device 100 of the second embodiment.

The flexible circuit board component 70 includes a printed circuit board 71, a flexible circuit board 73, a glue 75, and an adhesive layer 77.

The printed circuit board 71 is substantially in the form of a thin plate. The printed circuit board 71 is disposed on a side of the panel 40 away from the cover 10. The printed circuit board 71 is used to supply voltage to the panel 40.

One end of the flexible circuit board 73 is electrically connected to the upper surface of the touch panel 41 , and the other end is bent and fixed to the lower surface of the display panel 42 and electrically connected to the printed circuit board 71 . The flexible circuit board 73 includes a first connection portion 731, a second connection portion 732, and a bent portion 735. The first connecting portion 731 and the second connecting portion 732 are disposed in parallel, and the bent portion 735 is electrically connected between the first connecting portion 731 and the second connecting portion 732.

The first connection portion 731 is fixed to the lower surface of the display panel 42. The second connecting portion 732 is electrically connected to the upper surface of the touch panel 41 . The bent portion 735 has a substantially "C" shape for establishing an electrical connection between the first connecting portion 731 and the second connecting portion 732.

The colloid 75 is filled between the flexible circuit board 73 and the panel 40, and is disposed corresponding to the bent portion 735. The colloid 75 is used to maintain the degree of bending of the bent portion 735. In the present embodiment, the colloid 75 is a glue of epoxy resin or acrylate.

The adhesive layer 77 covers the flexible circuit board 73 and is detachable from the flexible circuit board 73 by an external force. In the present embodiment, the thickness of the adhesive layer 77 ranges from 5 to 500 μm.

The adhesive layer 77 includes a first adhesive portion 772 and a second adhesive portion 774. The first adhesive portion 772 and the second adhesive portion 774 correspond to different peeling forces, and the peeling force corresponding to the first adhesive portion 772 is greater than the peeling force corresponding to the second adhesive portion 774.

The first bonding portion 772 is interposed between the colloid 75 and the bent portion 735. The first adhesive portion 772 bonds the glue body 75 and the bent portion 735 integrally to maintain the degree of bending of the bent portion 735. Preferably, the first adhesive portion 772 has a peeling force greater than 1.5 N/cm. The first bonding portion 772 further includes a plurality of first notches 773. A plurality of first notches 773 are spaced apart to divide the first bonding portion 772 into a plurality of segments. In the present embodiment, the first notches 773 are provided at equal intervals. In an alternative embodiment, the spacing between the first indentations 773 may decrease from the central to the end, or in a decreasing direction in the same direction.

The second bonding portion 774 is interposed between the display panel 42 and the first connecting portion 731 . The second bonding portion 774 integrally bonds the bottom of the display panel 42 and the first connecting portion 731 to prevent the display panel 42 from moving relative to the first connecting portion 731. Preferably, the second adhesive portion 774 has a peeling force of less than 1.5 N/cm. The second bonding portion 774 includes a plurality of second notches 775. A plurality of second notches 775 are spaced apart to divide the second bonding portion 774 into a plurality of segments. In the present embodiment, the first notches 773 are provided at equal intervals. In an alternative embodiment, the spacing between the first indentations 773 may decrease from the central to the end, or in a decreasing direction in the same direction.

Please refer to FIG. 6 , which is a perspective exploded view of the electronic device 700 of the third embodiment. The electronic device 500 can be a fingerprint recognition device that includes a panel 50 and a flexible circuit board component 60 that is electrically coupled to the edge of the panel 50. In the present embodiment, the panel 50 is a fingerprint recognition panel such as an ultrasonic fingerprint recognition panel, but is not limited to the above panel.

Referring to FIG. 7, the flexible circuit board component 60 includes a flexible circuit board 63, a glue 65, and an adhesive layer 67.

One end of the flexible circuit board 63 is electrically connected to the upper surface of the touch panel 41, and the other end is bent and fixed to the lower surface of the display panel 42. The flexible circuit board 63 includes a first connecting portion 631 and a second The connecting portion 632 and the bent portion 635. The first connecting portion 631 and the second connecting portion 632 are disposed in parallel, and the bent portion 635 is electrically connected between the first connecting portion 631 and the second connecting portion 632.

The first connection portion 631 is fixed to the lower surface of the display panel 42. The second connecting portion 632 is electrically connected to the upper surface of the touch panel 41 . The bent portion 635 has a substantially "C" shape for establishing an electrical connection between the first connecting portion 631 and the second connecting portion 632.

The colloid 65 is filled between the flexible circuit board 63 and the panel 40 and is disposed corresponding to the bent portion 635. The colloid 65 is used to maintain the degree of bending of the bent portion 635. In the present embodiment, the colloid 65 is a glue of epoxy resin or acrylate.

The adhesive layer 67 is disposed on the inner surface of the flexible circuit board 43 and is detachable from the flexible circuit board 63 by an external force. In the present embodiment, the adhesive layer 67 has a thickness ranging from 5 to 500 μm.

The adhesive layer 67 includes a first adhesive portion 672 and a second adhesive portion 674. The first adhesive portion 672 and the second adhesive portion 674 correspond to different peeling forces, and the peeling force corresponding to the first adhesive portion 672 is greater than the peeling force corresponding to the second adhesive portion 674. In the present embodiment, the first adhesive portion 672 and the second adhesive portion 674 have the same thickness and have a thin plate shape.

The first adhesive portion 672 is interposed between the colloid 65 and the bent portion 635. The first bonding portion 672 integrally bonds the colloid 65 and the bent portion 635 to maintain the degree of bending of the bent portion 635. Preferably, the first adhesive portion 672 has a peeling force greater than 1.5 N/cm.

The second bonding portion 674 is interposed between the display panel 42 and the first connecting portion 631 . The second bonding portion 674 integrally bonds the lower surface of the display panel 42 and the first connecting portion 631 to prevent the display panel 42 from moving relative to the first connecting portion 631. Preferably, the second adhesive portion 674 has a peeling force of less than 1.5 N/cm.

By providing the peelable first adhesive portions 672, 772 between the bent portions 635, 735 and the colloids 65, 75, the colloids 65, 75 can be separated from the flexible circuit boards 63, 73 by an external force. Further, the flexible circuit boards 63, 73 can be reused. At the same time, the peelable second adhesive portions 674, 774 are disposed between the first connecting portions 631, 731 and the panels 40, 50, so that the panels 40, 50 are fixed with the flexible circuit boards 63, 73, thereby preventing the panel 40 , 50 moves relative to the flexible circuit boards 63, 73.

In summary, the creation meets the requirements of the invention patent, and the patent application is filed according to law. However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above embodiments, and those skilled in the art will be equivalently modified or changed according to the spirit of the present invention. It should be covered by the following patent application.

Claims (13)

An electronic device comprising a panel and a flexible circuit board component; the flexible circuit board component comprises a flexible circuit board and a glue; one end of the flexible circuit board is electrically connected to an edge of the upper surface of the panel, and the other end of the flexible circuit board is bent and fixed to The lower surface of the panel opposite to the upper surface, wherein the flexible circuit board component further includes a first adhesive portion, the first adhesive portion is detachably disposed on the inner surface of the flexible circuit board and covers the flexible circuit The inner surface of the plate bending position is filled between the first bonding portion and the panel and corresponds to the bent portion of the flexible circuit board for maintaining the degree of bending of the flexible circuit board. The electronic device of claim 1, wherein the first bonding portion comprises a plurality of first notches; and the plurality of first notches are spaced apart to divide the first bonding portion into a plurality of segments. The electronic device of claim 1, wherein the flexible circuit board comprises a first connecting portion, a second connecting portion, and a bent portion; the first connecting portion and the second connecting portion are disposed in parallel, and the bent portion is electrically Connected between the first connecting portion and the second connecting portion; the first connecting portion is electrically connected to the panel; the first bonding portion is disposed between the bent portion and the colloid. The electronic device of claim 3, wherein the electronic device further comprises a second bonding portion; the second bonding portion is disposed between the panel and the first connecting portion to position the panel opposite to the first connecting portion position. The electronic device of claim 4, wherein the first adhesive portion has a peeling force corresponding to a corresponding peeling force of the second adhesive portion. The electronic device of claim 4, wherein the second adhesive portion has a peeling force of less than 1.5 N/cm. The electronic device of claim 4, wherein the second bonding portion comprises a plurality of second notches; and the plurality of second notches are spaced apart to divide the second bonding portion into a plurality of segments. The electronic device of claim 4, wherein the panel comprises a touch panel and a display panel; the upper surface of the touch panel is electrically connected to the first connecting portion; the display panel is disposed on the touch panel and the first connection The opposite side of the portion; the second bonding portion is disposed between the liquid crystal panel and the first connecting portion to position the panel and the first connecting portion. The electronic device of claim 1, wherein: the first adhesive portion has a peeling force greater than 1.5 N/cm. The electronic device of claim 1, wherein the first adhesive portion has a thickness ranging from 5 to 500 μm. The electronic device of claim 1, wherein: the panel is a fingerprint identification panel. The electronic device of claim 1, wherein: the panel is a display panel. The electronic device of claim 1, wherein the panel comprises a touch panel and a display panel; one end of the flexible circuit board is electrically connected to the upper surface of the touch panel, and the other end is bent and fixed to the lower surface of the display panel. .