CN112839431A

CN112839431A - FPC board, terminal equipment

Info

Publication number: CN112839431A
Application number: CN202110123685.9A
Authority: CN
Inventors: 陈平
Original assignee: Huizhou TCL Mobile Communication Co Ltd
Current assignee: Huizhou TCL Mobile Communication Co Ltd
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2021-05-25

Abstract

The invention discloses an FPC board and a terminal device, wherein the FPC board is applied to the terminal device, the terminal device further comprises a main board which comprises a binding area, a bending area and a functional area, the binding area and the bending area of the FPC board are respectively provided with a windowing copper-exposed ground wire, the windowing copper-exposed ground wire is positioned outside the functional area, and two ends of the windowing copper-exposed ground wire are connected to the main board grounding end of the terminal device. The FPC board is provided with the windowing copper-exposed ground wires in the FPC board binding area and the FPC board bending area, ESD of an ESD test can be directly introduced to a main board of terminal equipment, the ESD is prevented from being introduced to a touch screen IC, and damage of the ESD test to the touch screen IC can be avoided; the terminal equipment can avoid damage of ESD test to a touch screen IC, reduce failure of the touch screen due to ESD test, and prolong the service life of the ESD-proof terminal equipment.

Description

FPC board, terminal equipment

Technical Field

The invention relates to the technical field of terminal equipment, in particular to an FPC (flexible printed circuit) board and terminal equipment.

Background

Tablet computers and notebooks are common electronic devices in daily life, and based on the functional characteristics of portability, the frames of the electronic devices are narrower and thinner. However, when the electronic device is made narrower, the design difficulty becomes more and more prominent, and especially, a Flexible Printed Circuit (FPC) cable of the touch screen under a narrow bezel is closer to the outer edge of the electronic device, and the functional failure of the touch screen is more likely to occur in an Electro-Static discharge (ESD) test.

In the touch screen in the prior art, when an ESD test is introduced, the ESD enters an FPC binding region, the ESD is directly applied to a functional PIN foot of the touch screen, and the ESD is easily conducted to a touch screen IC; when ESD enters a bending region, the ESD is directly printed on the FPC functional line and is conducted to the touch screen IC through the functional line of the FPC board, so that the touch screen IC is easily damaged.

Thus, there is still a need for improvement and development of the prior art.

Disclosure of Invention

The present invention provides an FPC board and a terminal device, which can prevent the damage of the ESD test to the touch screen IC and prolong the service life of the terminal device.

The technical scheme adopted by the invention for solving the problems is as follows:

the invention provides an FPC board, which is applied to terminal equipment, wherein the terminal equipment also comprises a mainboard and comprises a binding area, a bending area and a functional area, wherein windowing copper-exposed ground wires are arranged in the binding area of the FPC board and the bending area of the FPC board, the windowing copper-exposed ground wires are positioned outside the functional area, and two ends of the windowing copper-exposed ground wires are connected to the grounding end of the mainboard of the terminal equipment.

Preferably, the functional area comprises a functional PIN area on the FPC board and a functional wire on the FPC board.

Preferably, the windowing copper-exposed ground wire comprises a first copper-exposed ground wire, the first copper-exposed ground wire is located in the FPC board binding area, and the first copper-exposed ground wire surrounds the functional PIN foot area of the FPC board.

Preferably, the first copper-exposed ground wire is in a shape of "]", and two ends of the first copper-exposed ground wire are both connected to a grounding end of a main board of the terminal equipment.

Preferably, a plurality of functional PIN areas are arranged on the FPC board, and each functional PIN area corresponds to one first copper-exposed ground wire.

Preferably, the function PIN foot area comprises a plurality of PIN feet which are arranged in sequence along the direction perpendicular to the side edge of the FPC board.

Preferably, the length of each functional PIN area is smaller than the length of the corresponding first copper-exposed ground wire.

Preferably, the windowing copper-exposed ground wire further comprises a second copper-exposed ground wire, the second copper-exposed ground wire is located in the bending area of the FPC board, and the second copper-exposed ground wire covers the functional wire of the FPC board.

The invention provides terminal equipment, which comprises a surface cover plate, a bottom cover plate, a touch screen body for realizing signal input of the terminal equipment in a touch mode, a main board, a touch screen IC arranged on the main board and the FPC board, wherein the touch screen body, the main board and the FPC board are arranged between the surface cover plate and the bottom cover plate, and the touch screen body is connected with the touch screen IC through the FPC board.

The invention has the beneficial effects that: according to the FPC board disclosed by the embodiment of the invention, the windowing copper-exposed ground wires are arranged in the binding area and the bending area of the FPC board, so that ESD (electro-static discharge) of an ESD test can be directly introduced to a main board of terminal equipment, the ESD is prevented from being introduced to a touch screen IC, and the damage of the ESD test to the touch screen IC can be avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a front view of an FPC board according to an embodiment of the present invention.

Fig. 2 is a back view of the FPC board of the embodiment of the present invention.

Fig. 3 is an enlarged view of a portion a in fig. 2.

Fig. 4 is a front view of a terminal device according to an embodiment of the present invention.

Fig. 5 is a back view of a terminal device according to an embodiment of the present invention.

The reference numbers in the figures are as follows:

100-terminal device 10-surface cover plate 20-bottom cover plate 30-touch screen body

40-FPC board 41-binding area 42-bending area 43-functional PIN foot area

44-function line 50-windowing copper-exposed ground wire 51-first copper-exposed ground wire 52-second copper-exposed ground wire

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

Fig. 1 to 3 are different visual views of the FPC board according to the embodiment of the present invention, and the structure of the FPC board 40 will be described in detail with reference to fig. 1 to 3:

the present invention provides an FPC board 40 applied to a terminal device, the FPC board 40 being used for electrical connection between components of the terminal device, the terminal device further including a main board (not shown). Referring to fig. 1 to 3, the FPC board 40 includes a binding region 41, a bending region 42 and a functional region, the binding region 41 and the bending region 42 are both provided with a windowed and exposed copper ground wire 50, the windowed and exposed copper ground wire 50 is located outside the functional region, and two ends of the windowed and exposed copper ground wire 50 are connected to a main board ground terminal of the terminal device 100. Preferably, the terminal device is a tablet, a notebook computer, a touch television, or the like, the terminal device applied to the FPC board has a touch function, and the terminal device includes a touch screen IC. The FPC board 40 leads out an ESD signal during ESD test from the windowed copper-exposed ground wire 50 through the arrangement of the windowed copper-exposed ground wire 50, and directly leads the ESD signal to the ground wire of the main board of the terminal equipment through the windowed copper-exposed ground wire 50, and the ESD signal does not enter the touch screen IC, so that the damage to the touch screen IC during the ESD test is avoided.

The functional areas include a functional PIN area 43 on the FPC board 40 and a functional line 44 on the FPC board 40. Because the functional areas are directly connected with the touch screen IC of the terminal equipment, the damage of the ESD to the touch screen IC can be avoided as long as the ESD is prevented from being injected into the functional areas.

The following describes a specific structure of the windowed bare copper ground wire 50:

referring to fig. 1, the windowed copper-exposed ground wire 50 of the present invention includes a first copper-exposed ground wire 51, the first copper-exposed ground wire 51 is located in the binding region 41 of the FPC board 40, the first copper-exposed ground wire 51 is disposed around the outer side of the functional PIN region 43 of the FPC board 40, and both ends of the first copper-exposed ground wire 51 are connected to the ground terminal of the main board of the terminal device 100. Preferably, the first copper-exposed ground lines 51 are copper bars, the first copper-exposed ground lines 51 are "]" shaped, may be arc-shaped, may be curved, may be saw-toothed, etc., but the invention is not limited thereto as long as the first copper-exposed ground lines 51 can prevent ESD from striking the functional PIN field 43 on the FPC board 40.

Furthermore, a plurality of functional PIN areas 43 are disposed on the FPC board 40, and each functional PIN area 43 corresponds to a first copper exposed ground line 51, that is, the first copper exposed ground line 51 individually protects the functional PIN area. Wherein, function PIN foot district 43 includes a plurality of PIN foot, and a plurality of PIN foot all sets up and arranges in proper order along the direction of perpendicular to FPC board 40 side. Preferably, the length of each functional PIN area 43 is smaller than the length of the corresponding first copper-exposed ground wire 51, so that the overall protection effect of the first copper-exposed ground wire 51 on the functional PIN area can be ensured. As shown in fig. 1, in the embodiment of the present invention, the touch screen body 30 is provided with 2 functional PIN pad areas 43, where one functional PIN pad area 43 includes 19 PIN pads, and the other functional PIN pad area 43 includes 31 PIN pads. After the first exposed copper ground wire 51 is arranged in the binding area 41 of the FPC board 40, when ESD is introduced, the ESD is preferentially driven into the first exposed copper ground wire 51, and the ESD is introduced into the main board ground wire of the terminal device 100 through the first exposed copper ground wire 51, so that the ESD can be prevented from being driven into the touch screen IC through the functional PIN area 43 on the FPC board 40, and the touch screen IC is prevented from being damaged.

Referring to fig. 2 and 3, the windowed copper-exposed ground wire 50 according to the embodiment of the invention further includes a second copper-exposed ground wire 52, the second copper-exposed ground wire 52 is located in the bending region 42 of the FPC board 40, and the second copper-exposed ground wire 52 covers the functional wire 44 of the FPC board 40. Preferably, the second copper-exposed ground wire 52 is a rectangular copper sheet, and the width of the second copper-exposed ground wire 52 is greater than the width of the function wire 44, so that the function wire 44 can be completely covered by the second copper-exposed ground wire 52. After the second exposed copper ground line 52 is disposed in the bending region 42 of the FPC board 40, when ESD is introduced, the ESD is preferentially driven into the second exposed copper ground line 52, and the ESD is introduced into the main board ground line of the terminal device 100 through the second exposed copper ground line 52, so that the ESD can be prevented from being driven into the touch screen IC through the functional line 44 of the FPC board 40, and the touch screen IC is prevented from being damaged.

Based on the FPC board, the present invention further provides a terminal device 100, please refer to fig. 4 to 5, taking a tablet computer as an example, the terminal device 100 for preventing ESD according to the embodiment of the present invention includes a surface cover plate 10, a bottom cover plate 20, a touch screen body 30 for implementing signal input of the terminal device 100 by touch, a main board (not shown), a touch screen IC (not shown) and an FPC board 40, which are disposed on the main board, wherein the touch screen body 30, the main board and the FPC board 40 are disposed between the surface cover plate 10 and the bottom cover plate 20, and the touch screen body 30 is connected to the touch screen IC through the FPC board 40. And, the functional area of FPC board is connected with touch-sensitive screen IC, and windowing dew copper ground wire 50 is located the functional area outside of being connected with touch-sensitive screen IC. Preferably, the surface cover plate 10 and the bottom cover plate 20 are narrow frames, and the flat cable of the FPC board 40 is close to the edge of the terminal device 100; the surface cover plate 10 has a hollow structure, and a user can touch the touch screen body 30 through the hollow structure, so that the touch control of the terminal device 100 is realized through the touch of the touch screen body 30. The terminal equipment can avoid damage of ESD test to a touch screen IC, reduce failure of the touch screen due to ESD test, and prolong the service life of the anti-ESD terminal equipment 100.

It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a FPC board, is applied to terminal equipment, terminal equipment still contains the mainboard, its characterized in that, including binding the district, bending district and functional area FPC board binds the district FPC board the FPC board is bent the district and all is provided with windowing and exposes copper ground wire, windowing and exposing copper ground wire is located the functional area outside, windowing and exposing copper ground wire both ends are connected to terminal equipment's mainboard earthing terminal.

2. The FPC board of claim 1, wherein the functional areas include functional PIN fields on the FPC board, functional lines on the FPC board.

3. The FPC board of claim 2, wherein the windowed copper-exposed ground traces comprise first copper-exposed ground traces located in the FPC board bonding area, the first copper-exposed ground traces disposed around an outer side of the functional PIN pad area of the FPC board.

4. The FPC board of claim 3, wherein the first copper-exposed ground wire is "]" -shaped, and both ends of the first copper-exposed ground wire are connected to a ground terminal of a main board of a terminal device.

5. The ESD-protected terminal device according to claim 3, wherein a plurality of functional PIN pad areas are disposed on the FPC board, and each of the functional PIN pad areas corresponds to one of the first copper-exposed ground wires.

6. The FPC board of claim 2, wherein the functional PIN pad area includes a plurality of PIN pads, and the plurality of PIN pads are arranged in a direction perpendicular to the side of the FPC board and are sequentially arranged.

7. The FPC board of claim 3, wherein each of the functional PIN pad lengths is less than a length of the corresponding first bare copper ground.

8. The FPC board of claim 2, wherein the windowed copper-exposed ground wire further comprises a second copper-exposed ground wire, the second copper-exposed ground wire is located in the bending area of the FPC board, and the second copper-exposed ground wire covers the functional wires of the FPC board.

9. A terminal device, comprising a surface cover plate, a bottom cover plate, a touch screen body for inputting signals of the terminal device by touch, a main board, a touch screen IC arranged on the main board, and the FPC board of any one of claims 1 to 8, wherein the touch screen body, the main board, and the FPC board are arranged between the surface cover plate and the bottom cover plate, and the touch screen body is connected with the touch screen IC through the FPC board.