CN210181573U - Touch screen and electronic equipment - Google Patents
Touch screen and electronic equipment Download PDFInfo
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- CN210181573U CN210181573U CN201921320074.8U CN201921320074U CN210181573U CN 210181573 U CN210181573 U CN 210181573U CN 201921320074 U CN201921320074 U CN 201921320074U CN 210181573 U CN210181573 U CN 210181573U
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Abstract
The utility model relates to a touch screen and electronic equipment, which comprises a touch area and a binding area surrounding the touch area; the touch screen includes: a first flexible substrate having a first surface and a second surface disposed opposite to each other; the touch layer comprises a first touch layer and a second touch layer which cover the touch area of the first flexible substrate; the first touch layer is positioned on one side of the first flexible substrate close to the first surface, and the second touch layer is positioned on one side of the first flexible substrate close to the second surface or on one side of the first touch layer far away from the first flexible substrate; an integrated circuit located in a bonding region of a first surface of a first flexible substrate; the integrated circuit is electrically connected with the touch layer through the metal routing. Compared with the traditional touch screen, the touch screen has the advantages that the number of the flexible circuit boards is reduced, and therefore the thickness of the bent touch screen is reduced.
Description
Technical Field
The utility model relates to a touch-control field especially relates to a touch screen and electronic equipment.
Background
Touch screens are increasingly widely used in portable devices such as mobile phones, tablet computers, and digital cameras because of their advantages of being light, thin, fast in response, and space-saving.
A conventional touch screen includes a substrate, a touch layer, and an integrated circuit electrically connected to the touch layer through a flexible circuit board. The flexible circuit board is arranged on the front surface of the substrate, and the integrated circuit is connected with the circuit board on the back surface of the touch screen through bending of the flexible circuit board. However, the conventional touch screen has a relatively thick thickness.
SUMMERY OF THE UTILITY MODEL
Therefore, it is necessary to provide a touch screen for solving the problem of the thick thickness of the touch screen.
A touch screen comprises a touch area and a binding area surrounding the touch area; the touch screen includes:
a first flexible substrate having a first surface and a second surface disposed opposite to each other;
the touch layer comprises a first touch layer and a second touch layer which cover the touch area of the first flexible substrate; the first touch layer is positioned on one side of the first flexible substrate close to the first surface, and the second touch layer is positioned on one side of the first flexible substrate close to the second surface or on one side of the first touch layer far away from the first flexible substrate;
an integrated circuit located in a bonding region of a first surface of the first flexible substrate; the integrated circuit is electrically connected with the touch layer through metal routing.
Above-mentioned touch screen, integrated circuit directly set up on first flexible substrate to walk the line through the metal and be connected with the touch-control layer electricity, thereby can be through directly buckling first flexible substrate, make integrated circuit and the circuit board that is located the touch screen back be connected. Compared with the traditional touch screen, the flexible circuit board is reduced, so that the thickness of the bent touch screen is reduced.
In one embodiment, the touch area comprises a display area and a bending area; the bending area is positioned between the display area and the binding area.
In one embodiment, the touch screen further comprises a connection interface area arranged around the touch area; the connection interface area of the first surface of the first flexible substrate is provided with an external metal wire electrically connected with the integrated circuit, and the connection interface area of the first surface of the first flexible substrate is provided with a plug electrically connected with the external metal wire.
In one embodiment, the touch area has a first side edge, and the binding area is connected to the first side edge of the touch area; the length of the binding area along the direction of the first side edge is smaller than the length of the first side edge of the touch area.
In one embodiment, the system further comprises a connection interface area; the connection interface area of the first surface of the first flexible substrate is provided with an external metal wire electrically connected with the integrated circuit; the binding area and the connection interface area are positioned on the same side of the touch area; the projection of the binding area on the first side edge and the projection of the connecting interface area on the first side edge are both on the first side edge and do not overlap with each other.
In one embodiment, the connection interface area is connected with the binding area, and a gap is formed between the connection interface area and the first side edge of the touch area; or the connection interface area is connected with the touch area and has a gap with the binding area.
In one embodiment, the connection interface region has a free end; and the free end of the first flexible substrate, which is close to the connection interface area, is provided with an anti-falling structure.
In one embodiment, the device further comprises a second flexible substrate; the second touch layer is located on one side, close to the second surface, of the first flexible substrate, and the second flexible substrate is located on one side, far away from the first flexible substrate, of the second touch layer.
The utility model also provides an electronic equipment, it includes the utility model provides a touch screen.
Drawings
Fig. 1 is a schematic top view of a touch panel according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of the touch screen shown in FIG. 1 along the A-A direction;
FIG. 3 is a schematic cross-sectional view of the touch screen shown in FIG. 1 in the A-A direction after being bent;
fig. 4 is a schematic cross-sectional view of a touch panel according to an embodiment of the present invention;
fig. 5 is a schematic top view of a touch panel according to an embodiment of the present invention;
fig. 6 is a schematic cross-sectional view of a touch panel according to an embodiment of the present invention.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.
It will be understood that when an element is referred to as being "around" another element, it can be directly around the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is "engaged" with another element, it may be directly engaged with the other element or intervening elements may be present. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 to fig. 3, a touch screen 100 according to an embodiment of the present invention includes a touch area 10 and a binding area 20 disposed around the touch area 10. The touch screen 10 includes a first flexible substrate 30, a touch layer 40, and an integrated circuit 60.
The first flexible substrate 30 has a first surface 31 and a second surface 32 disposed opposite to each other. The touch layer 40 includes a first touch layer 41 and a second touch layer 42 covering the touch region 10 of the first flexible substrate 30. The first touch layer 41 is located on one side of the first flexible substrate 30 close to the first surface 31, and the second touch layer 42 is located on one side of the first flexible substrate 30 close to the second surface 32. The integrated circuit 60 is located in the bonding region 20 of the first surface 31 of the first flexible substrate 30 and electrically connected to the touch layer 40 through the metal trace 50.
In the touch screen 100, the integrated circuit 60 is directly disposed on the first flexible substrate 30 and electrically connected to the touch layer 40 through the metal trace 50, so that the integrated circuit 60 is directly connected to the circuit board on the back of the touch screen 100 by bending the first flexible substrate 30. Compared with the traditional touch screen, the flexible circuit board is reduced, so that the thickness of the bent touch screen is reduced.
Specifically, since no flexible circuit board is required to be disposed on the first flexible substrate 30, the thickness of the touch screen is reduced. Moreover, in the conventional touch screen, the bending radius of the flexible circuit board is greatly affected by the first flexible substrate. In this embodiment, the first flexible substrate 30 is directly bent, so that the bending radius of the first flexible substrate 30 is smaller, thereby reducing the thickness of the touch screen.
Further, the bending radius of the first flexible substrate 30 is smaller, so that the length of the bending position of the touch screen 100 along the direction perpendicular to the bending line is smaller, thereby increasing the screen occupation ratio of the touch screen 100. In addition, since the first flexible substrate 30 in this embodiment is not provided with a flexible circuit board, that is, the touch area 10 is not shielded by the flexible circuit board, the screen occupation ratio of the touch screen is further improved.
Moreover, any position on the first flexible substrate 30 can be bent, so that the length of the touch screen can be controlled by controlling the bending position on the first flexible substrate 30.
The integrated circuit 60 is directly electrically connected with the metal trace 50, so that the use of a flexible circuit board and a gold finger is reduced, namely, the structure of the touch screen is simplified. In addition, the flexible circuit board and the gold fingers are reduced, so that the procedures of forming the gold fingers and welding the flexible circuit board are reduced in the process of manufacturing the touch screen, and the manufacturing process of the touch screen is simplified.
It is understood that, in the present embodiment, the first touch layer 41 includes a plurality of first electrodes, and the second touch layer 42 includes a plurality of second electrodes. The first electrode and the second electrode are perpendicular to each other. It will be appreciated that in other possible embodiments, the first and second electrodes are not limited to being arranged perpendicular to each other, i.e. the angle between the first and second electrodes may also be an acute angle.
In this embodiment, the integrated circuit 60 and the second touch layer 42 are located on different surfaces of the flexible substrate 30. To electrically connect the second touch layer 42 and the integrated circuit 60, a through hole 33 is formed in the bonding region 20 of the first flexible substrate 30 and penetrates through the first surface 31 and the second surface 32 of the first flexible substrate. The metal trace 50 electrically connected to the second touch layer 42 on the second surface 32 of the first flexible substrate 30 is electrically connected to the metal trace 50 electrically connected to the integrated circuit 60 on the first surface 31 of the first flexible substrate by pouring a conductive material into the through hole 33, so that the second touch layer 42 is electrically connected to the integrated circuit 60. Optionally, a fiber laser drilling method is used to form the through hole 33 on the first flexible substrate 30. Specifically, the conductive material in the via 33 may be silver, copper, or the like.
It will be appreciated that only one through hole 33 is schematically identified in fig. 1. Specifically, the number of the through holes 33 is specifically set according to the number of the metal traces 50 electrically connected to the second electrode in the second touch layer 42. The location of the through-hole 33 may also be set according to conventional manners in the art.
The first flexible substrate 30 may be bent, i.e. the first flexible substrate 30 is made of a flexible material. Specifically, the first flexible substrate 30 may be formed of a flexible material such as polyimide, polyethylene terephthalate, polycarbonate, or polymethyl methacrylate.
Alternatively, the metal trace 50 may be a copper trace, and may also be a molybdenum aluminum molybdenum trace. The metal trace 50 can be formed by a conventional technique in the art, such as etching.
It is understood that, in other possible embodiments, the position of the second touch layer is not limited thereto. For example, referring to fig. 4, in a touch panel 200 provided by another embodiment of the present invention, the second touch layer 42 may also be located on a side of the first touch layer 41 away from the first flexible substrate 30. An insulating material 43 is disposed between the first touch layer 41 and the second touch layer 42 of the touch screen 200 to prevent short circuit caused by contact between the first touch layer 41 and the second touch layer 42. Alternatively, the insulating material may be alkali-free fiberglass cloth.
Referring to fig. 1, in the present embodiment, the touch area 10 further includes a display area 11 and a bending area 12. The bending region 12 is located between the display region 11 and the binding region 20. The bending zone 12 may be bent. Meanwhile, since the touch layer 40 covers the bending region 12, the bending region 12 of the touch screen 100 has a touch effect, so that the bending region 12 of the touch screen 100 can be used as a secondary screen. The bending region 12 is located on the side of the touch screen 100 due to bending, and does not occupy the area of the surface of the touch screen where the display region 11 is located, thereby increasing the screen occupation ratio of the touch screen 100.
In this embodiment, the touch screen 100 further includes a connection interface area 70 disposed around the touch area 10. The connection interface region 70 of the first surface 31 of the first flexible substrate 30 is provided with external metal traces 80 electrically connected to the integrated circuit 60. It is understood that the electronic device motherboard has an interface for connecting with the external metal traces 80. The external metal trace 80 is connected to the electronic device motherboard.
In the present embodiment, the touch area 10 has a first side 13, and the binding area 20 is connected to the first side 13 of the touch area 10. The length of the binding region 20 along the direction of the first side 13 is less than the length of the first side 13 of the touch region 10. So that the area occupied by the binding region 20 is small, and the volume and weight of the touch screen 100 are small.
Specifically, it can be understood that the bonding region 20 occupies a smaller area, and thus the size of the bonding region 20 of the first flexible substrate 30 is smaller. Specifically, a larger flexible substrate may be provided, and then, in the subsequent manufacturing process of the touch screen 100, the flexible substrate is cut as needed to obtain the first flexible substrate 30; the first flexible substrate 30 having a desired shape may be directly used.
In the present embodiment, the projection of the binding region 20 on the first side 13 and the projection of the connection interface region 70 on the first side 13 both fall on the first side 13 and do not overlap with each other. It is understood that any one of the touch area 10, the binding area 20 and the connection interface area 70 of the touch screen 100 is connected to another one or two of the touch areas, and is not isolated. Therefore, the arrangement direction of the binding region 20 and the connection interface region 70 is not perpendicular to the first side 13, so that the length of the binding region 20 and the connection interface region 70 in the direction perpendicular to the first side 13 is less than the sum of the lengths of the binding region 20 and the connection interface region 70 in the direction perpendicular to the first side 13. If the first flexible substrate 30 is obtained by the cutting method, the length of the selected flexible substrate in the direction perpendicular to the first side 13 may be shorter when the touch panel 100 is manufactured.
Optionally, the connection interface area 70 is connected to the binding area 20, and is spaced apart from the first side 13 of the touch area 10. Therefore, the free end 71 is formed at the end of the connection interface area 70 far away from the binding area 20, that is, the free end 71 of the connection interface area 70 is not connected with the binding area 20 and the touch area 10, so that the free end 71 of the connection interface area 70 is directly connected with the main board of the electronic device. It will be appreciated that the motherboard of the electronic device is provided with an interface that mates with the free end 71 of the connection structure region 70.
In the present embodiment, the free end 71 of the first flexible substrate 30 near the connection interface area 70 is provided with the anti-separation structure 34. Specifically, the anti-separation structure 34 is a groove disposed on the first flexible substrate 30. It can be understood that a position limiting member is disposed in the electronic device motherboard interface and matches with the groove on the first flexible substrate 30. The anti-separation structure 34 can improve the connection stability between the external metal trace 80 and the electronic device motherboard.
It should be noted that the connection manner between the external metal trace 80 and the electronic device motherboard is not limited to this. For example, in another possible embodiment, the connection interface region 70 is provided with a plug electrically connected with the external metal trace 80. It can be understood that the electronic equipment main board is provided with a socket matched with the plug. The plug is inserted into a socket of the mainboard of the electronic equipment. The external metal wire 80 is electrically connected with the electronic equipment mainboard by adopting a plug and socket connection mode. In addition, it can be understood that the external metal trace 80 is electrically connected to the electronic device motherboard by using a plug and socket manner, and even if the connection interface region 70 has no free end 71, the external metal trace 80 can be electrically connected to the electronic device motherboard.
It is understood that, in another possible embodiment, the connection manner between the touch screen and the main board of the electronic device is not limited thereto. For example, referring to fig. 5, another embodiment provides a touch screen 300 in which the connection interface region 70 is further connected to the first side 13 of the touch region 10 and spaced apart from the binding region 20. Thus, the end of the connection interface region 70 remote from the binding region 20 forms a free end 71. The free end 71 facilitates the interface connection between the external metal trace 80 and the electronic device motherboard.
It can be understood that the first touch layer 41, the second touch layer 42, the metal traces 50, and the external metal traces 80 in the connection interface region 70 are covered with the protective film layer 44. It is understood that the locations of the metal traces 50 and the external metal traces 80 to connect with the integrated circuit 60 are exposed, i.e., not covered by the protective film layer 44. The protection film layer 44 is used to block the adjacent first electrodes, the adjacent second electrodes, the adjacent metal traces 50 and the adjacent external metal traces 80, so as to prevent the adjacent first electrodes, the adjacent second electrodes, the adjacent metal traces 50 or the adjacent external metal traces 80 from short-circuiting.
In other possible embodiments, the connection interface area 70 of the touch screen 200 is not limited to being located on the same side of the touch area 10 as the binding area 20. I.e. the connection interface area 70 may also be located at a different side of the touch area 10 than the binding area 20.
As shown in fig. 6, a touch panel 400 according to another embodiment of the present invention is different from the touch panel 100 in that the touch panel 400 further includes a second flexible substrate 90. Specifically, the second touch layer 42 is located on a side of the first flexible substrate 30 away from the second surface 32. The second flexible substrate 90 is located on a side of the second touch layer 42 away from the first flexible substrate 30. The second flexible substrate 90 shields the second touch layer 42, so as to prevent the second touch layer 42 from being damaged due to contact with other components. Optionally, first, the first touch layer 41 may be formed on the surface of the first flexible substrate 30, and the second touch layer 42 may be formed on the surface of the second flexible substrate 90; and then the second flexible substrate 90 is bonded to the first flexible substrate 30 by the solid transparent optical adhesive 91 to form the touch screen 300. In this way, the operation of forming the first touch layer 41 and the operation of forming the second touch layer 42 can be performed simultaneously. Compared with the touch screen 100, the preparation time of the touch screen 300 is shortened.
An embodiment of the utility model provides an electronic equipment is still provided, it includes the utility model provides a touch screen.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A touch screen is characterized by comprising a touch area and a binding area surrounding the touch area; the touch screen includes:
a first flexible substrate having a first surface and a second surface disposed opposite to each other;
the touch layer comprises a first touch layer and a second touch layer which cover the touch area of the first flexible substrate; the first touch layer is positioned on one side of the first flexible substrate close to the first surface, and the second touch layer is positioned on one side of the first flexible substrate close to the second surface or on one side of the first touch layer far away from the first flexible substrate;
an integrated circuit located in a bonding region of a first surface of the first flexible substrate; the integrated circuit is electrically connected with the touch layer through metal routing.
2. The touch screen of claim 1, wherein the touch area comprises a display area and a bending area; the bending area is positioned between the display area and the binding area.
3. The touch screen of claim 1, further comprising a connection interface area disposed around the touch area; and the connection interface area of the first surface of the first flexible substrate is provided with an external metal wire electrically connected with the integrated circuit.
4. The touch screen of claim 3, wherein the connection interface area of the first surface of the first flexible substrate is provided with a plug electrically connected to the external metal trace.
5. The touch screen of claim 1, wherein the touch area has a first side edge, and the binding area is connected to the first side edge of the touch area; the length of the binding area along the direction of the first side edge is smaller than the length of the first side edge of the touch area.
6. The touch screen of claim 5, further comprising a connection interface region; the connection interface area of the first surface of the first flexible substrate is provided with an external metal wire electrically connected with the integrated circuit; the binding area and the connection interface area are positioned on the same side of the touch area; the projection of the binding area on the first side edge and the projection of the connecting interface area on the first side edge are both on the first side edge and do not overlap with each other.
7. The touch screen of claim 6, wherein the connection interface area is connected to the binding area and spaced apart from a first side of the touch area; or the connection interface area is connected with the touch area and has a gap with the binding area.
8. Touch screen according to claim 6 or 7, characterised in that the connection interface area has a free end; and the free end of the first flexible substrate, which is close to the connection interface area, is provided with an anti-falling structure.
9. The touch screen of any one of claims 1-7, further comprising a second flexible substrate; the second touch layer is located on one side, close to the second surface, of the first flexible substrate, and the second flexible substrate is located on one side, far away from the first flexible substrate, of the second touch layer.
10. An electronic device, comprising the touch screen of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921320074.8U CN210181573U (en) | 2019-08-14 | 2019-08-14 | Touch screen and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921320074.8U CN210181573U (en) | 2019-08-14 | 2019-08-14 | Touch screen and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210181573U true CN210181573U (en) | 2020-03-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921320074.8U Active CN210181573U (en) | 2019-08-14 | 2019-08-14 | Touch screen and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210181573U (en) |
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2019
- 2019-08-14 CN CN201921320074.8U patent/CN210181573U/en active Active
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Effective date of registration: 20230927 Address after: Wuge Optoelectronic Technology Park, No. 258 Saiwei Avenue, High tech Development Zone, Xinyu City, Jiangxi Province, 338000 Patentee after: Jiangxi Dehong Display Technology Co.,Ltd. Address before: 338004 Woge Industrial Park, Xicheng Avenue, Xinyu high tech Industrial Development Zone, Jiangxi Province Patentee before: WGTECH (JIANGXI) Co.,Ltd. |