Flexible PCB for display screen

Abstract

The utility model relates to the technical field of flexible PCBs, and discloses a flexible PCB for a display screen, which comprises a bottom connection insulating layer, the back surface of the bottom connection insulating layer is fixedly connected with a bottom protection plate, and the outer side of the bottom connection insulating layer is provided with a shielding protection assembly. A conductive copper foil layer assembly is arranged on the top face of the bottom connecting insulating layer, a covering connecting assembly is fixedly connected to the top face of the conductive copper foil layer assembly, a display screen body is fixedly connected to the top face of the covering connecting assembly, and a connecting IC element is fixedly connected to the back of the display screen body. According to the utility model, through the structural design of the interior of the conductive copper foil layer, the flexible PCB can fit the curved surface shape of the display, so that the flexible PCB has better folding and extensibility, and meanwhile, the shielding protection assembly can shield electromagnetic interference in the use process, so that the display can be protected from being damaged, and the display can be protected from being damaged. And the signal transmission purity of the flexible PCB is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to flexible PCB board technical field, concretely is a flexible PCB board for display screen. BACKGROUND

[0002] With the continuous development of thin, portable direction of smart mobile phones, tablet computers, wearable devices and other consumer electronics products, the use requirement of PCB is also continuously improved, and the appearance of high resolution, high refresh rate display screen puts forward higher requirements for the signal transmission performance and stability of PCB.

[0003] At present, the traditional rigid PCB is difficult to meet the required bendable, folding characteristics of the product due to its hardness and volume limit, and cannot better adapt to the narrow space and complex shape requirements of the product, and does not have higher signal integrity and electromagnetic compatibility, and cannot effectively reduce the loss and interference in the signal transmission process, and needs to be improved, and therefore we provide a flexible PCB board for display screen. UTILITY MODEL CONTENT

[0004] (I) technical problem solved

[0005] In view of the defects of prior art, the utility model provides a flexible PCB board for display screen, which solves the above problems.

[0006] (II) technical scheme

[0007] In order to realize the above purpose, the utility model provides the following technical scheme:

[0008] A flexible PCB board for display screen, comprising a bottom connecting insulating layer, the back surface of the bottom connecting insulating layer is fixedly connected with a bottom protection plate, the outer side of the bottom connecting insulating layer is provided with a shielding protection assembly, the top surface of the bottom connecting insulating layer is provided with a conductive copper foil layer assembly, the top surface of the conductive copper foil layer assembly is fixedly connected with a covering connecting assembly, the top surface of the covering connecting assembly is fixedly connected with a display screen body, the back of the display screen body is fixedly connected with a connecting IC element, and the top surface of the covering connecting assembly is fixedly connected with a top protection glass.

[0009] Preferably, the top surface of the bottom connecting insulating layer is provided with a bottom plug-in hole penetrating through the bottom and equidistantly distributed, the top surface of the bottom protection plate is provided with a bottom communication hole penetrating through the bottom and equidistantly distributed, and the distribution positions of the bottom plug-in hole and the bottom communication hole correspond.

[0010] Preferably, the shielding protection assembly comprises a connecting protection shell, a shielding protection ring plate, the top surface of the bottom protection plate is fixedly connected with the connecting protection shell, the outer side of the bottom connecting insulating layer is fixedly connected with the connecting protection shell, the top surface of the connecting protection shell is provided with a mounting shielding slot, and the inner side of the mounting shielding slot is fixedly connected with the shielding protection ring plate.

[0011] Preferably, the conductive copper foil layer assembly comprises a copper foil layer and a connecting wire, the top surface of the bottom connecting insulating layer is fixedly connected with the copper foil layer, the top surface of the copper foil layer is provided with a wire placing slot, and the inner side of the wire placing slot is fixedly connected with the connecting wire.

[0012] Preferably, the wire placing slot is a snake-shaped slot, and the connecting wire on the inner side of the wire placing slot is arranged and fixed in a snake shape.

[0013] Preferably, the covering connecting assembly comprises a connecting adhesion ring plate and a top covering film layer, the top surface of the copper foil layer is fixedly connected with the top covering film layer, the top surface of the connecting protection shell is fixedly connected with the connecting adhesion ring plate, and the outer side of the top covering film layer is fixedly connected with the connecting adhesion ring plate.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The utility model discloses a flexible PCB, which comprises a flexible PCB, a shielding protection assembly, a conductive copper foil layer assembly and a covering connecting assembly. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is overall structure schematic diagram of the utility model;

[0018] Figure 2 It is overall structure split schematic diagram of the utility model;

[0019] Figure 3 It is overall structure cross section schematic diagram of the utility model;

[0020] Figure 4 It is part structure conductive copper foil layer structure split schematic diagram of the utility model.

[0021] In the figure: 1, connecting protective shell; 2, bottom protective plate; 3, connecting adhesion ring plate; 4, top protective glass; 5, shielding protective ring plate; 6, bottom connecting insulating layer; 7, copper foil layer; 8, connecting wire; 9, top covering film layer; 10, display screen body; 11, connecting IC element; 12, wire placing groove; 13, bottom plug-in hole; 14, mounting shielding groove; 15, bottom communication hole. DETAILED DESCRIPTION

[0022] 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. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] Please refer to Figures 1-4 The present application provides a technical solution;

[0024] A flexible PCB for a display screen comprises a bottom connecting insulating layer 6, the back of the bottom connecting insulating layer 6 is fixedly connected with a bottom protective plate 2, the outer side of the bottom connecting insulating layer 6 is provided with a shielding protective assembly, the top surface of the bottom connecting insulating layer 6 is provided with a conductive copper foil layer assembly, the top surface of the conductive copper foil layer assembly is fixedly connected with a covering connecting assembly, the top surface of the covering connecting assembly is fixedly connected with a display screen body 10, the back of the display screen body 10 is fixedly connected with a connecting IC element 11, and the top surface of the covering connecting assembly is fixedly connected with a top protective glass 4.

[0025] Further, the top surface of the bottom connecting insulating layer 6 is provided with bottom plug-in holes 13 that are distributed equidistantly and penetrate through the bottom, the top surface of the bottom protective plate 2 is provided with bottom communication holes 15 that are distributed equidistantly and penetrate through the bottom, the distribution positions of the bottom plug-in holes 13 and the bottom communication holes 15 correspond to each other, and the bottom connecting insulating layer 6 is composed of a polyimide (PI) film, so that the flexible PCB can still maintain structural integrity in different bending states. In a foldable screen device, the PI substrate can be continuously bent with repeated folding of the screen.

[0026] Further, the shielding protection assembly comprises a connecting protection shell 1, a shielding protection ring plate 5, the top surface of the bottom protection plate 2 is fixedly connected with the connecting protection shell 1, the outer side of the bottom connecting insulating layer 6 is fixedly connected with the connecting protection shell 1, the top surface of the connecting protection shell 1 is provided with a mounting shielding groove 14, and the inner side of the mounting shielding groove 14 is fixedly connected with the shielding protection ring plate 5; through the shielding protection assembly, electromagnetic signals generated by internal lines can be effectively shielded in the PCB board, meanwhile, external electromagnetic signals can be prevented from interfering with internal lines, so that the flexible PCB board has better signal integrity and electromagnetic compatibility, and loss and interference in the signal transmission process can be effectively reduced.

[0027] Further, the conductive copper foil layer assembly comprises a copper foil layer 7 and a connecting wire 8, the top surface of the bottom connecting insulating layer 6 is fixedly connected with the copper foil layer 7, the top surface of the copper foil layer 7 is provided with a wire placing groove 12, and the inner side of the wire placing groove 12 is fixedly connected with the connecting wire 8; through the conductive copper foil layer assembly, transmission signals are realized, including providing driving signals for pixels of a display screen, transmitting data signals and providing power supply signals for a backlight source of the display screen.

[0028] Further, the wire placing groove 12 is a snake-shaped groove, and the connecting wire 8 in the wire placing groove 12 is fixedly arranged in a snake shape; through the snake-shaped groove of the wire placing groove 12, the connecting wire 8 is arranged in a snake shape, so that the flexible PCB board has better folding and bending properties.

[0029] Further, the covering connecting assembly comprises a connecting adhesion ring plate 3 and a top covering film layer 9, the top surface of the copper foil layer 7 is fixedly connected with the top covering film layer 9, the top surface of the connecting protection shell 1 is fixedly connected with the connecting adhesion ring plate 3, and the outer side of the top covering film layer 9 is fixedly connected with the connecting adhesion ring plate 3; through the covering connecting assembly and the action of the internal top covering film layer 9, the copper foil circuit is prevented from being scratched and abraded from the outside, and the mutual connection between the flexible PCB board and the display screen is realized through the action of the connecting adhesion ring plate 3.

[0030] Working principle: when the utility model needs to be used, through the action of the top covering film layer 9 on the top of the copper foil layer 7, the copper foil circuit is prevented from being scratched and abraded, meanwhile, the fixed connection between the flexible PCB board and the display screen is realized through the action of the connecting adhesion ring plate 3, the display screen and the flexible PCB board are connected with each other through the connecting IC element 11, through the internal structure of the wire copper foil layer assembly, the flexible PCB board has better folding and stretching properties, meanwhile, through the mutual cooperation between the connecting protection shell 1 and the shielding protection ring plate 5, the flexible PCB board is protected and electromagnetic interference shielding is realized, so that the flexible PCB board has better signal integrity and electromagnetic compatibility, and loss and interference in the signal transmission process can be effectively reduced.

[0031] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A flexible PCB board for display screen comprising a bottom connecting insulating layer (6), characterized in that: The back surface of the bottom connecting insulating layer (6) is fixedly connected with a bottom protective plate (2), the outer side of the bottom connecting insulating layer (6) is provided with a shielding protection assembly, the top surface of the bottom connecting insulating layer (6) is provided with a conductive copper foil layer assembly, the top surface of the conductive copper foil layer assembly is fixedly connected with a covering connecting assembly, the top surface of the covering connecting assembly is fixedly connected with a display screen body (10), the back of the display screen body (10) is fixedly connected with a connecting IC element (11), and the top surface of the covering connecting assembly is fixedly connected with a top protective glass (4).

2. The flexible PCB board for a display screen according to claim 1, characterized in that: The top surface of the bottom connecting insulating layer (6) is provided with bottom plug-in holes (13) penetrating through the bottom and being equidistantly distributed, and the top surface of the bottom protective plate (2) is provided with bottom communication holes (15) penetrating through the bottom and being equidistantly distributed, and the distribution positions of the bottom plug-in holes (13) and the bottom communication holes (15) correspond to each other.

3. The flexible PCB board for a display screen according to claim 2, characterized in that: The shielding protection assembly comprises a connecting protective shell (1) and a shielding protection ring plate (5), the top surface of the bottom protective plate (2) is fixedly connected with the connecting protective shell (1), the outer side of the bottom connecting insulating layer (6) is fixedly connected with the connecting protective shell (1), and the top surface of the connecting protective shell (1) is provided with a mounting shielding groove (14), and the inner side of the mounting shielding groove (14) is fixedly connected with the shielding protection ring plate (5).

4. The flexible PCB board for a display screen according to claim 2, characterized in that: The conductive copper foil layer assembly comprises a copper foil layer (7) and a connecting wire (8), the top surface of the bottom connecting insulating layer (6) is fixedly connected with the copper foil layer (7), the top surface of the copper foil layer (7) is provided with a wire placing groove (12), and the inner side of the wire placing groove (12) is fixedly connected with the connecting wire (8).

5. The flexible PCB board for a display screen according to claim 4, characterized in that: The wire placing groove (12) is in the shape of a snake-shaped groove, and the connecting wire (8) on the inner side of the wire placing groove (12) is arranged and fixed in a snake shape.

6. The flexible PCB board for a display screen according to claim 4, characterized in that: The covering connecting assembly comprises a connecting adhesion ring plate (3) and a top covering film layer (9), the top surface of the copper foil layer (7) is fixedly connected with the top covering film layer (9), the top surface of the connecting protective shell (1) is fixedly connected with the connecting adhesion ring plate (3), and the outer side of the top covering film layer (9) is fixedly connected with the connecting adhesion ring plate (3).

Images