CN214757089U - Flexible circuit board capable of avoiding line crush, backlight module and vehicle-mounted display device - Google Patents

Abstract

The utility model provides a can avoid flexible line way board of circuit crushing, including the circuit board body, carry and draw membrane and stiffening plate, the circuit board body is including relative first surface and the second surface that sets up, the tip of circuit board body is provided with the golden finger, the golden finger sets up in the first surface, the first surface be equipped with golden finger electric connection's many circuits, carry and draw the membrane including interconnect's fixed part and carry the portion of drawing, the fixed part is connected in the second surface, and fixed part and golden finger are just to setting up, carry and draw portion and second surface interval to set up, the stiffening plate is fixed in the second surface, the stiffening plate is located the below of carrying the portion of drawing. The utility model discloses a can avoid the flexible line way board that the circuit crushed can avoid the terminal surface position of carrying the portion of drawing to crush the circuit on the flexible line way board that can avoid the circuit to crush. The utility model discloses still relate to a backlight unit and an on-vehicle display device.

Description

Flexible circuit board capable of avoiding line crush, backlight module and vehicle-mounted display device

Technical Field

The utility model relates to an illumination display device technical field, in particular to flexible line way board, backlight unit and on-vehicle display device that can avoid the circuit to crush.

Background

The modern society display screen is applied more and more, no matter be many fields such as cell-phone, flat board, notebook, TV, car, all the wide application is in display screen product, and backlight unit is one of the main component parts of display screen, and FPCA in the backlight unit provides key component for the light source that the display screen can exert its efficiency. The quality of the picture directly influences whether the display screen can display and provide beautiful pictures for consumers. If the FPC in the FPCA is damaged, the display screen cannot work normally, and the experience of consumers is directly influenced, even the safety is influenced. Therefore, it is important to improve the reliability of FPCA in the backlight module.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a can avoid the flexible line way board that the circuit crushed, the terminal surface position that can avoid carrying the portion of drawing can avoid the circuit to crush the circuit on the flexible line way board that the circuit crushed.

The utility model provides a can avoid flexible line way board of circuit crushing, including the circuit board body, carry and draw membrane and stiffening plate, the circuit board body is including relative first surface and the second surface that sets up, the tip of circuit board body is provided with the golden finger, the golden finger sets up in the first surface, the first surface be equipped with golden finger electric connection's many circuits, carry and draw the membrane including interconnect's fixed part and carry the portion of drawing, the fixed part is connected in the second surface, and fixed part and golden finger are just to setting up, carry and draw portion and second surface interval to set up, the stiffening plate is fixed in the second surface, the stiffening plate is located the below of carrying the portion of drawing.

In an embodiment of the present invention, the length of the reinforcing plate is less than or equal to the length of the lifting portion. In an embodiment of the present invention, the width of the reinforcing plate is less than or equal to the width of the circuit board body.

In an embodiment of the present invention, the reinforcing plate is a metal plate.

In an embodiment of the present invention, the reinforcing plate is made of copper material.

In an embodiment of the present invention, the pulling film is made of polyimide.

The utility model discloses an in the embodiment, above-mentioned many circuit edges the width direction of circuit board body separates the setting each other, each the one end of circuit respectively with golden finger electric connection, each the other end of circuit along the length direction of circuit board body sets up.

The utility model also provides a backlight module, including foretell flexible line way board of avoiding the circuit crushing, backlight module still includes the light source, light source electric connection in the circuit board body, the light source is located and keeps away from the one end of golden finger.

The embodiment of the utility model provides an in, above-mentioned backlight unit still includes the underframe, and the underframe includes the bottom plate and connects frame on the bottom plate, the light source is located in the underframe, the circuit board body is close to the one end fixed connection of light source in the frame, the circuit board body is close to the one end of golden finger is passed the bottom plate.

The utility model also provides an on-vehicle display device, including foretell backlight unit.

The utility model discloses a can avoid carrying of flexible line way board that circuit crushed to draw portion and second surface interval setting, the stiffening plate is fixed in the second surface, and the stiffening plate is located the below of carrying the portion of drawing, and wherein, the stiffening plate can strengthen the stiffening plate and can avoid the rigidity of the flexible line way board junction that the circuit crushed. Therefore, when the lifting part deforms towards the second surface in the hot pressing process and the punching process of the flexible circuit board capable of avoiding the circuit crush damage, the lifting part can abut against the reinforcing plate, and finally the circuit crush damage on the flexible circuit board capable of avoiding the circuit crush damage due to the end face position of the lifting part can be avoided.

Drawings

Fig. 1 is a schematic diagram of a local enlarged structure of a flexible printed circuit capable of avoiding circuit crush injury.

Fig. 2 is a schematic side view of the flexible printed circuit board capable of avoiding circuit crush.

Fig. 3 is a partially enlarged schematic view of fig. 2.

Fig. 4 is a schematic structural diagram of the flexible printed circuit board capable of avoiding circuit crush of the present invention, which is installed on the backlight module.

Detailed Description

The application provides a can avoid flexible line way board that circuit crushed.

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In order to facilitate understanding of those skilled in the art, the present application provides a specific implementation process of the technical solution provided by the present application through the following embodiments.

FIG. 1 is a schematic diagram showing a partially enlarged structure of a flexible printed circuit capable of avoiding circuit crush according to the present invention, FIG. 2 is a schematic diagram showing a side view of a flexible printed circuit capable of avoiding circuit crush according to the present invention, FIG. 3 is a schematic diagram showing a partially enlarged structure of FIG. 2, FIG. 4 is a schematic diagram showing a structure of a flexible printed circuit capable of avoiding circuit crush according to the present invention mounted on a backlight module, referring to FIGS. 1 to 4, the flexible printed circuit capable of avoiding circuit crush includes a printed circuit board body 11, a lifting film 12 and a reinforcing plate 13, the printed circuit board body 11 includes a first surface 11a and a second surface 11b which are oppositely disposed, a gold finger 14 is disposed at an end of the printed circuit board body 11, the gold finger 14 is disposed on the first surface 11a, the first surface 11a is provided with a plurality of circuits electrically connected to the gold finger 14, the lifting film 12 includes a fixing portion 121 and a lifting portion 122 which are connected to each other, the fixing portion 121 is connected to the second surface 11b, the fixing portion 121 is disposed opposite to the gold finger 14, the pulling portion 122 is disposed at an interval from the second surface 11b, the reinforcing plate 13 is fixed to the second surface 11b, and the reinforcing plate 13 is located below the pulling portion 122.

The utility model discloses a can avoid flexible line way board's that circuit crushed to carry portion 122 and second surface 11b interval setting, stiffening plate 13 is fixed in second surface 11b, and stiffening plate 13 is located the below of carrying portion 122, and wherein, stiffening plate 13 can strengthen stiffening plate 13 and can avoid the rigidity of the flexible line way board junction that the circuit crushed. Therefore, when the pulling portion 122 deforms toward the second surface 11b during the hot pressing process and the punching process of the flexible printed circuit board capable of preventing the circuit from being crushed, the pulling portion 122 can abut against the reinforcing plate 13, and finally, the end position of the pulling portion 122 can be prevented from crushing the circuit on the flexible printed circuit board capable of preventing the circuit from being crushed.

Further, the pulling portion 122 is spaced apart from the second surface 11b and forms an included angle, which is greater than 0 ° and less than 90 °. In the present embodiment, the pulling portion 122 is mainly used to facilitate inserting and pulling the gold finger 14.

Further, the fixing portion 121 is attached to the second surface 11 b. The fixing portion 121 is mainly used to enhance the rigidity of the flexible printed circuit board near the gold finger 14, which can avoid the circuit from being crushed.

Further, the length of the reinforcing plate 13 is less than or equal to the length of the pull-up portion 122. In this embodiment, when the length of the reinforcing plate 13 is smaller than the length of the pulling portion 122, the position of the reinforcing plate 13 on the second surface 11b needs to be corresponding to the end of the pulling portion 122 away from the fixing portion 121, so that the end of the pulling portion 122 away from the fixing portion 121 can abut against the reinforcing plate 13 during the hot pressing process and the punching process.

Further, the reinforcing plate 13 is a metal plate. For example, a metal plate made of a mixture of iron, aluminum, copper, zinc, and the like.

Further, the reinforcing plate 13 is made of copper material. In the present embodiment, the reinforcing plate 13 is specifically a copper foil.

Further, the pulling-up film 12 is made of polyimide.

Further, the plurality of lines are arranged at intervals along the width direction of the circuit board body 11, one end of each line is electrically connected with the gold finger 14, and the other end of each line is arranged along the length direction of the circuit board body 11.

The utility model discloses still relate to a backlight unit, including foretell flexible line way board of avoiding the circuit to crush, backlight unit still includes the light source, and light source electric connection is in circuit board body 11, and the light source is located the one end of keeping away from golden finger 14.

Further, backlight unit still includes the underframe 15, and underframe 15 includes bottom plate 151 and connects the frame on bottom plate 151, and the light source is located underframe 15, and circuit board body 11 is close to the one end of light source and passes through heat conduction glue fixed connection in frame, and circuit board body 11 passes bottom plate 151 near the one end of golden finger 14.

Further, backlight unit still includes light guide plate and reflectance coating, reflectance coating and bottom plate 151 fixed connection, light guide plate and reflectance coating fixed connection, the light guide plate includes relative play plain noodles and stationary plane and the income light side of setting from top to bottom, go out the plain noodles and the stationary plane all is on a parallel with bottom plate 151, the stationary plane is located the one side of being close to bottom plate 151, go out the plain noodles and be located the one side of keeping away from bottom plate 151, it sets up with the light source relatively to go into the light side, the reflectance coating is attached behind the surface of light guide plate and is exposed income light side and go out the plain noodles.

Furthermore, the backlight module also comprises one or more optical films of a diffusion film, a brightness enhancement film or a brightness enhancement film. In this embodiment, the backlight module includes a diffusion film and two brightness enhancement films, the diffusion film is fixedly connected to the light guide plate, and the two brightness enhancement films sequentially cover the diffusion film. The number of the diffusion films and the brightness enhancement films can be increased or decreased according to actual conditions. The diffusion film and the brightness enhancement film are adhered and fixed on the light guide plate through adhesive tapes.

Further, backlight unit still includes well frame, and the side of well frame is equipped with the draw-in groove, and the outside limit of frame is equipped with the fixture block, and well frame passes through the draw-in groove of side and is connected with the corresponding fixture block cooperation of underframe 15. In this embodiment, the middle frame is further provided with a FOG bearing surface directly above, the FOG bearing surface is attached with foam adhesive, and the foam adhesive is used for buffering and fixing the FOG display screen.

The utility model discloses still relate to an on-vehicle display device, including foretell backlight unit. In the embodiment, the vehicle-mounted display device comprises a vehicle display screen, a vehicle-mounted streaming media rearview mirror display, a vehicle-mounted central control, a vehicle-mounted instrument display and the like.

The utility model discloses not be limited to the specific details among the above-mentioned embodiment the utility model discloses a within the technical idea scope, can be right the technical scheme of the utility model carry out multiple simple variant, these simple variants all belong to the utility model discloses a protection scope. The various features described in the foregoing detailed description may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.

Claims (10)

1. The flexible circuit board capable of avoiding circuit crush injury is characterized by comprising a circuit board body (11), a lifting film (12) and a reinforcing plate (13), wherein the circuit board body (11) comprises a first surface (11a) and a second surface (11b) which are oppositely arranged, a golden finger (14) is arranged at the end part of the circuit board body (11), the golden finger (14) is arranged on the first surface (11a), the first surface (11a) is provided with a plurality of circuits which are electrically connected with the golden finger (14), the lifting film (12) comprises a fixing part (121) and a lifting part (122) which are mutually connected, the fixing part (121) is connected to the second surface (11b), the fixing part (121) is arranged opposite to the golden finger (14), and the lifting part (122) is arranged at an interval with the second surface (11b), the reinforcing plate (13) is fixed to the second surface (11b), and the reinforcing plate (13) is located below the pulling portion (122).

2. The flexible wiring board capable of avoiding line crush according to claim 1, wherein the length of the reinforcing plate (13) is less than or equal to the length of the pulling portion (122).

3. The flexible wiring board capable of avoiding line crush according to claim 1, wherein the width of the reinforcing plate (13) is smaller than or equal to the width of the circuit board body (11).

4. The flexible wiring board capable of avoiding line crush according to claim 1, wherein the reinforcing plate (13) is a metal plate.

5. The flexible wiring board capable of avoiding crush damage of wiring according to claim 4, wherein the reinforcing plate (13) is made of copper material.

6. The flexible wiring board capable of avoiding line crush according to claim 1, wherein the pulling film (12) is made of polyimide.

7. The flexible printed circuit board capable of avoiding circuit crush according to claim 1, wherein a plurality of the circuits are arranged at intervals along a width direction of the circuit board body (11), one end of each of the circuits is electrically connected to the gold finger (14), and the other end of each of the circuits is arranged along a length direction of the circuit board body (11).

8. A backlight module, comprising the flexible printed circuit board capable of avoiding circuit damage according to any one of claims 1 to 7, and further comprising a light source electrically connected to the circuit board body (11), wherein the light source is located at an end away from the gold finger (14).

9. The backlight module according to claim 8, further comprising a bottom frame (15), wherein the bottom frame (15) comprises a bottom plate (151) and a frame connected to the bottom plate (151), the light source is located in the bottom frame (15), one end of the circuit board body (11) near the light source is fixedly connected to the frame, and one end of the circuit board body (11) near the gold finger (14) passes through the bottom plate (151).

10. A vehicle-mounted display device, characterized by comprising the backlight module of any one of claims 8 to 9.

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