CN218603707U - Backlight FPC wiring for improving electrostatic capacity of display screen - Google Patents

Abstract

The utility model discloses an improve FPC that is shaded of display screen static ability and walk line belongs to display screen structure technical field. The utility model provides an improve FPC in a poor light of display screen static ability and walk line, includes screen, backlight unit and pad in a poor light, backlight unit installs at the screen back, and with electric connection between the screen, the pad in a poor light sets up in the screen bottom side, and with backlight unit between electric welding, backlight unit includes flexible circuit board, the wire guide has all been seted up to flexible circuit board both sides, every side the wire guide is two at least. The utility model provides a via hole department because the impedance in hole is great, consequently when static takes place, the heat is the biggest, also is the position by electrostatic burn easiest, if the hole is wounded by the electrostatic shock, just lost the effect that positive and negative circuit switched on, LED in a poor light will unable by the power supply and the problem of lightening.

Description

Backlight FPC wiring for improving electrostatic capacity of display screen

Technical Field

The utility model relates to a display screen technical field specifically is an improve FPC that is shaded of display screen static ability and walk line.

Background

A large part of the existing liquid crystal displays has a touch function, such as mobile phones, tablet computers, smart watches, and the like, and because the touch technology is convenient and fast to operate and can greatly reduce the volume of electronic equipment, the liquid crystal displays are popular among users. Static electricity is ubiquitous at all times and is a ubiquitous invisible killer in the electronics industry. For a mobile phone display screen, the loss caused by static electricity is very large every year, and the service life and the use experience of the product are also influenced to a great extent. Therefore, the display screen industry is very necessary for electrostatic protection at present. The backlight, which is an important component of the display screen, provides a light source for the display screen, and if the backlight is damaged, the display screen cannot be used at all. LED line damage in the backlight is a common cause.

The existing patent document with application number 202123340621.9 discloses an OGS routing structure and an electronic device, including: the glass cover plate comprises a visual area and a frame area; the metal routing is provided with binding positions and is arranged in the frame area of the glass cover plate; at least part of the metal routing is closer to the edge of the frame area relative to the binding position and winds to the binding position from the direction far away from the visual area to the direction close to the visual area; the flexible circuit board is connected with the glass cover plate through binding and positioning.

As mentioned above, since the front surface of the FPC is the LED pads, the routing space is limited, and therefore the lines are usually routed on the back surface of the FPC. This requires vias to connect the front side lines. And because the impedance of the hole is great at the via hole, when static electricity occurs, the heat at the place is the greatest according to Q = IIR, and is the position which is most easily burnt by the static electricity, if the hole is burnt by the static electricity, the effect of conducting the front and back circuits is lost, and the backlight LED cannot be powered on.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an improve FPC in a poor light of display screen static ability and walk the line to solve the problem that proposes in the above-mentioned background art: the hole has large impedance, so that when static electricity occurs, the heat is the largest and is the position which is most easily burnt by the static electricity, if the hole is damaged by the static electricity, the conduction effect of the front and back circuits is lost, and the backlight LED cannot be powered to be lightened.

In order to achieve the above object, the utility model provides an improve FPC that is shaded of display screen static ability and walk line specifically adopts following technical scheme to realize:

the utility model provides an improve FPC that is shaded of display screen static ability walks line, includes screen, backlight unit and pad in a poor light, backlight unit installs at the screen back, and with electric connection between the screen, the pad in a poor light sets up in the screen bottom side, and with backlight unit between electric welding, backlight unit includes the flexible circuit board, the wire guide has all been seted up to the flexible circuit board both sides, every side the wire guide is two at least.

As the utility model provides an improve FPC that is shaded of display screen static ability and walk an optimized implementation mode of line sets up, preferred, every side according to wire quantity the quantity of wire guide sets up according to the quantity that passes the wire.

As the utility model provides an improve FPC in a poor light of display screen static ability and walk line an optimized implementation mode, it is preferred, backlight unit is still including gluing integrative frame of iron, light guide plate, a plurality of LED lamp, diffusing down, intensifying down, on intensifying, reflection, shading glue, circuit board double faced adhesive tape and graphite flake.

As the utility model provides an improve the FPC that is shaded of display screen static ability and walk an optimization implementation mode of line constitutes display module assembly, preferred, the fixed laminating of reflection is at the integrative frame back of glued iron, the fixed laminating of light guide plate is at the reflection back, the fixed laminating of diffusion is at the light guide plate back down, the fixed laminating of intensifying is at the diffusion back down, on intensify the fixed laminating of intensifying and intensify the back under.

As the utility model provides an improve FPC in a poor light of display screen static ability and walk an optimization implementation mode of line, it is preferred, a plurality of the equal electric welding of LED lamp is positive at the flexible circuit board, the flexible circuit board bonds openly at the circuit board double faced adhesive tape, the graphite flake is fixed to be laminated at the circuit board double faced adhesive tape back.

As the utility model provides an improve FPC in a poor light of display screen static ability and walk an optimization implementation mode of line forms to be shaded, and is preferred, a plurality of the LED lamp all is located the light guide plate bottom side.

As the utility model provides an improve FPC that is shaded of display screen static ability and walk an optimization implementation mode of line realizes the electric connection of LED lamp, and is preferred, a plurality of the LED lamp divide into two sets ofly, and circuit connection is the tandem type, and is a plurality of the anodal A of LED lamp is extremely for the sharing pole, and negative pole K is extremely separately two tunnel.

As the utility model provides an improve FPC in a poor light of display screen static ability and walk an optimized implementation mode of line, it is preferred, wire hole department is equipped with static part, static part is used for collecting static.

As the utility model provides an improve FPC in a poor light of display screen static ability and walk an optimization implementation mode of line collects the static and shares, and is preferred, the static part includes static wire and electrostatic discharge device.

As the utility model provides an improve FPC in a poor light of display screen static ability and walk an optimization implementation mode of line, it is preferred, the electrostatic discharge device input passes through static wire and wire guide electric connection, the electrostatic discharge device output passes through wire and gluey integrative frame electric connection of iron.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) The utility model reduces the integral impedance of the via hole area by adding a plurality of wire holes, thereby reducing the heat at the place when static occurs, and further effectively protecting the wire holes and avoiding overheat breakdown;

(2) The utility model discloses an electrostatic discharge device collects the static of flexible circuit board and shares, further reduces the risk of being punctured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of a front view structure of a backlight FPC cable for improving the electrostatic capacity of a display screen according to the present invention;

fig. 2 is a schematic side view of a backlight FPC cable for improving the electrostatic capacity of a display screen according to the present invention;

fig. 3 is a schematic front circuit diagram of a backlight FPC cable for improving the electrostatic capacity of the display screen according to the present invention;

fig. 4 is a schematic diagram of a circuit structure of an LED lamp in a backlight FPC wiring for improving electrostatic capacity of a display screen according to the present invention;

FIG. 5 is an enlarged view of the structure at A in FIG. 3 of a backlight FPC trace for improving electrostatic capability of a display screen according to the present invention;

fig. 6 is a schematic structural diagram of an electrostatic component in a backlight FPC line for improving electrostatic capacity of a display screen.

The reference numbers in the figures illustrate:

1. a rubber-iron integrated frame; 2. a light guide plate; 3. a flexible circuit board; 4. an LED lamp; 5. performing lower diffusion; 6. lower brightening; 7. upward brightening; 8. reflection; 9. shading glue; 10. a circuit board double-sided adhesive tape; 11. a graphite sheet; 12. a screen; 13. a backlight pad; 14. a wire guide hole; 15. an electrostatic wire; 16. an electrostatic discharge device.

Detailed Description

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 application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

As described in the background art, since the front surface of the FPC is the respective LED pads and the wiring space is limited, the wiring is usually routed on the back surface of the FPC. Thus, vias are needed to connect the front side traces. And because the impedance of the hole is great at the via hole, when static electricity occurs, the heat is the biggest at the place according to Q = IIR, and is the position most easily burnt by the static electricity, if the hole is burnt by the static electricity, the effect of conducting the front and back surface lines is lost, and the backlight LED can not be powered and is lightened.

Therefore, the present invention provides a backlight FPC cable for improving the electrostatic capacity of a display screen, so as to solve the above technical problems. Please refer to fig. 1-5, the utility model provides an improve FPC that is shaded of display screen static ability and walk line, including screen 12, backlight unit and pad 13 that is shaded, backlight unit installs at the screen 12 back, and with between the screen 12 electric connection, pad 13 that is shaded sets up in screen 12 bottom side, and with backlight unit between the electric welding, backlight unit includes flexible circuit board 3, wire guide 14 has all been seted up to flexible circuit board 3 both sides, every side wire guide 14 is two at least.

Increase conventional wire guide 14 quantity, the increase quantity of wire guide 14 is according to the line space setting on the flexible circuit board 3, a plurality of wire guide 14 of maximize to reduce the regional "whole" impedance of via hole, thereby reduce the heat of here when static takes place, and then effectual protection wire guide 14 avoids overheated breakdown.

Referring to fig. 6, an electrostatic component is disposed at the wire hole 14, and the electrostatic component is used for collecting static electricity.

The electrostatic components include an electrostatic wire 15 and an electrostatic discharge device 16.

The static electricity discharge device 16 collects static electricity through the static electricity conducting wire 15 and uniformly discharges the static electricity after reaching a certain value, and by the mode, the static electricity of the flexible circuit board 3 can be shared, and the risk of breakdown is further reduced.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings. It is to be understood that the embodiments described are some, not all embodiments of the invention.

Thus, the following detailed description of the embodiments of the invention is not intended to limit the scope of the invention as claimed, but is merely representative of some embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that, in the present invention, the embodiments and the features and technical solutions in the embodiments may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

Example 1:

referring to fig. 1-5, a backlight FPC cable for improving the electrostatic capacity of a display panel includes a screen 12, a backlight assembly and a backlight pad 13, the backlight assembly is mounted on the back of the screen 12 and electrically connected to the screen 12, the backlight pad 13 is disposed on the bottom side of the screen 12 and electrically welded to the backlight assembly, the backlight assembly includes a flexible circuit board 3, two sides of the flexible circuit board 3 are both provided with wire holes 14, and at least two wire holes 14 are disposed on each side of the flexible circuit board.

The number of wire holes 14 per side is set according to the number of wires to be passed.

The backlight assembly further comprises a rubber and iron integrated frame 1, a light guide plate 2, a plurality of LED lamps 4, a lower diffusion 5, a lower light increasing 6, an upper light increasing 7, a reflection 8, a shading adhesive 9, a circuit board double-sided adhesive 10 and a graphite sheet 11.

The reflection 8 is fixedly attached to the back face of the integrated frame 1 made of the rubber and iron, the light guide plate 2 is fixedly attached to the back face of the reflection 8, the lower diffusion 5 is fixedly attached to the back face of the light guide plate 2, the lower light enhancement 6 is fixedly attached to the back face of the lower diffusion 5, and the upper light enhancement 7 is fixedly attached to the back face of the lower light enhancement 6.

The LED lamps 4 are electrically welded on the front surface of the flexible circuit board 3, the flexible circuit board 3 is adhered on the front surface of the circuit board double-faced adhesive tape 10, and the graphite flake 11 is fixedly adhered on the back surface of the circuit board double-faced adhesive tape 10.

The plurality of LED lamps 4 are all located at the bottom side of the light guide plate 2.

The LED lamps 4 are divided into two groups, the circuit connection is in a series connection mode, the anode A of each LED lamp 4 is a common electrode, and the cathode K is divided into two paths.

When the LED display screen runs, the LED lamps 4 electrically welded on the front face of the flexible circuit board 3 emit light to form backlight, the LED lamps 4 emit light from the side face, the light emitting face faces the light guide plate 2, the light of the whole row of LED lamps 4 is guided out by the light guide plate 2 to form a surface light source, the surface light source irradiates the lower diffusion 5 and is dispersed to form uniformly distributed light, and the uniformly distributed light is emitted after the efficiency enhancement of the lower light enhancement 6, so that a light source is provided for the screen 12.

Example 2

The whole machine supplies power to the plurality of LED lamps 4 through the backlight bonding pad 13 to light the LED lamps 4, the front surface of the flexible circuit board 3 is the bonding pad of each LED lamp 4, the wiring space is limited, therefore, the circuit is usually arranged on the back surface of the flexible circuit board 3, a wire hole 14 needs to be drilled on the flexible circuit board 3 for a wire to pass through, and the wire hole 14 has larger impedance due to the hole, so when static occurs, the heat at the position is the largest according to Q = IIR, and the position is the position which is most easily burnt by the static, and if the hole is damaged by the static, the function of conducting the front surface and the back surface circuits is lost. The LED lamp 4 forming the backlight will not be powered and will light up.

The number of the wire holes 14 is only one, in the scheme, the number of the conventional wire holes 14 is increased, the increased number of the wire holes 14 is set according to the wiring space on the flexible circuit board 3, and the wire holes 14 are increased as much as possible so as to reduce the overall impedance of the via hole area, thereby reducing the heat at the place when static electricity occurs, further effectively protecting the wire holes 14 and avoiding overheat breakdown.

Example 3:

referring to fig. 6, the difference between the embodiments 2 is: an electrostatic component is disposed at the wire guide 14, and the electrostatic component is used for collecting static electricity.

The electrostatic components include an electrostatic wire 15 and an electrostatic discharge device 16.

The input end of the electrostatic discharge device 16 is electrically connected with the wire hole 14 through an electrostatic wire 15, and the output end of the electrostatic discharge device 16 is electrically connected with the rubber-iron integrated frame 1 through a wire.

In the operation process, the static electricity is collected by the static electricity discharge device 16 through the static electricity conducting wire 15 and is uniformly discharged after reaching a certain value, and by the mode, the static electricity of the flexible circuit board 3 can be shared, so that the risk of breakdown is further reduced.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

It is to be understood that the above-described embodiments are merely illustrative of some, but not restrictive, of the broad invention, and that the appended drawings illustrate preferred embodiments of the invention and do not limit the scope of the invention. This application is capable of embodiments in many different forms and is provided for the purpose of enabling a thorough understanding of the disclosure of the application. Although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that the present application may be practiced without modification or with equivalents of some of the features described in the foregoing embodiments. All equivalent structures made by using the contents of the specification and the drawings of the present application are directly or indirectly applied to other related technical fields, and all the equivalent structures are within the protection scope of the present application.

Claims (10)

1. The utility model provides an improve FPC that is shaded of display screen static ability and walk line, includes screen (12), backlight unit and pad (13) in a poor light, its characterized in that: the backlight assembly is arranged on the back of the screen (12) and is electrically connected with the screen (12), the backlight pad (13) is arranged on the bottom side of the screen (12) and is electrically welded with the backlight assembly, the backlight assembly comprises a flexible circuit board (3), wire holes (14) are formed in two sides of the flexible circuit board (3), and at least two wire holes (14) are formed in each side.

2. The backlight FPC trace for improving electrostatic capacity of a display screen according to claim 1, wherein: the number of the wire guide holes (14) on each side is set according to the number of the passing wires.

3. The backlight FPC trace for improving electrostatic capacity of a display screen according to claim 1, wherein: the backlight assembly further comprises a glue and iron integrated frame (1), a light guide plate (2), a plurality of LED lamps (4), lower diffusion (5), lower light enhancement (6), upper light enhancement (7), reflection (8), light shading glue (9), a circuit board double-sided adhesive tape (10) and a graphite sheet (11).

4. The backlight FPC trace for improving electrostatic capacity of a display screen according to claim 3, wherein: reflection (8) are fixed to be laminated at the integrative frame of glued membrane (1) back, light guide plate (2) are fixed to be laminated at reflection (8) back, diffusion (5) are fixed to be laminated at light guide plate (2) back down, increase light (6) and fix the laminating diffusion (5) the back down, on increase light (7) and fix the laminating and increase light (6) the back down.

5. The backlight FPC trace for improving electrostatic capacity of a display screen according to claim 3, wherein: the LED lamps (4) are electrically welded on the front surface of the flexible circuit board (3), the flexible circuit board (3) is bonded on the front surface of the circuit board double-sided adhesive tape (10), and the graphite sheet (11) is fixedly attached to the back surface of the circuit board double-sided adhesive tape (10).

6. The backlight FPC trace for improving electrostatic capacity of a display screen according to claim 5, wherein: the LED lamps (4) are all located on the bottom side of the light guide plate (2).

7. The backlight FPC trace for improving electrostatic capacity of a display screen according to claim 3, wherein: the LED lamps (4) are divided into two groups, the circuit connection is in a series connection mode, the anode A of each LED lamp (4) is a common electrode, and the cathode K is divided into two paths.

8. The backlight FPC trace for improving electrostatic capacity of a display screen according to claim 1, wherein: and an electrostatic component is arranged at the wire hole (14) and is used for collecting static electricity.

9. The backlight FPC trace for improving electrostatic capacity of a display screen according to claim 8, wherein: the electrostatic component comprises an electrostatic lead (15) and an electrostatic discharge device (16).

10. The backlight FPC trace for improving electrostatic capacity of a display screen according to claim 9, wherein: the input end of the electrostatic discharge device (16) is electrically connected with the wire hole (14) through an electrostatic wire (15), and the output end of the electrostatic discharge device (16) is electrically connected with the integrated frame (1) of the rubber and iron through a wire.

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