Display screen FPC

Abstract

The utility model discloses a display screen FPC which comprises an FPC, one end of the FPC is used for being bound to a display screen, the other end of the FPC is used for being connected with a client host, and hole digging processing is carried out on the position where the FPC is bound to the display screen. The FPC has the advantages of being high in flexibility and capable of reducing pulling on the display screen when the display screen is bound so as to avoid the light leakage phenomenon of the display screen.

Description

Technical Field

[0001] The utility model relates to the technical field of FPC, in particular to an FPC for a display screen. Background Art

[0002] A display module generally includes a cover plate, a display screen and a backlight. An FPC is usually bonded to the display screen, and the FPC is used to connect to a customer main board to ensure the normal use of the display module. In a vehicle-mounted display screen, since the glass of the vehicle-mounted display screen is relatively thick, the FPC may need to be bent when being bonded to the display screen. The flexibility of the FPC is poor when it is bent, and the display screen is easily subjected to the pulling force of the FPC, and light leakage is likely to occur at the position where the display screen is pulled, thus affecting the normal display of the display screen. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide an FPC for a display screen.

[0004] The purpose of the utility model is achieved by the following technical solutions:

[0005] An FPC for a display screen, comprising: an FPC, one end of the FPC is used for being bonded to the display screen, the other end of the FPC is used for connecting to a customer host, and the position where the FPC is bonded to the display screen is subjected to a hole digging treatment.

[0006] In one embodiment, one end of the FPC bonded to the display screen is a bonding end, the bonding end is used for being bonded to the corresponding position of the display screen, and the bonding end is subjected to a hole digging treatment.

[0007] In one embodiment, a plurality of gold fingers are arranged on the bonding end, and the plurality of gold fingers are used for being bonded to the circuits of the display screen.

[0008] In one embodiment, the plurality of gold fingers are all subjected to a hole digging treatment.

[0009] In one embodiment, each gold finger has a plurality of holes dug, and the plurality of holes are evenly distributed on the gold finger.

[0010] In one embodiment, the depth of the hole is less than the thickness of the FPC, and the hole does not penetrate through the FPC.

[0011] In one embodiment, the FPC includes a substrate layer and a copper foil layer, and the copper foil layer is a metal trace printed on the substrate layer.

[0012] In one embodiment, the thickness of the substrate layer is 25μm, and the thickness of the copper foil layer is 18μm - 28μm.

[0013] In one embodiment, the depth of the dug hole is 10%-20% of the thickness of the copper foil layer.

[0014] In one embodiment, the FPC is covered with a PI film for insulation.

[0015] Compared with the prior art, the present utility model has at least the following advantages:

[0016] A display screen FPC of the present utility model performs a dug hole treatment on the gold fingers at the binding end bound to the display screen. The depth of the dug hole is less than the thickness of the FPC, so as to increase the softness of the binding end without affecting the normal use of the FPC. When the FPC binding end is bound to the display screen, the FPC will not generate stress, thereby reducing the pulling force on the display screen. Multiple dug holes can also increase the surface roughness of the binding end, thereby increasing the ACF bonding area when the FPC is bound to the display screen and improving the adhesion force. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the embodiments will be briefly introduced below.

[0018] Figure 1 FIG. is a schematic structural diagram of a display screen FPC provided by the present utility model;

[0019] Figure 2 FIG. is a schematic structural diagram of a binding end in a display screen FPC provided by the present utility model;

[0020] Figure 3 FIG. is a schematic stacked structure diagram of a display screen FPC provided by the present utility model;

[0021] Figure 4 FIG. is a schematic stacked structure diagram of a PI film in a display screen FPC provided by the present utility model.

[0022] BRIEF DESCRIPTION OF THE DRAWINGS: 10. FPC; 101. Substrate layer; 102. Copper foil layer; 11. Binding end; 111. Gold finger; 20. Dug hole; 30. PI film; 31. Epoxy resin adhesive layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings.

[0024] A display screen FPC, referring to Figure 1 , includes an FPC 10. One end of the FPC 10 is used to be bound to a display screen, and the other end of the FPC 10 is used to be connected to a customer host to ensure the normal use of the display screen.

[0025] Referring toFigure 1 and Figure 2 Since the glass of the in-vehicle display screen is relatively thick, when the FPC10 is bound to the display screen, the binding position of the display screen is likely to be stressed and light leakage occurs. Therefore, the area where the FPC10 is bound to the display screen is subjected to the hole digging 20 treatment, so that the area where the FPC10 is bound to the display screen is softer, reducing the generation of stress and the pulling on the display screen.

[0026] Further, referring to Figure 1 and Figure 2 One end of the FPC10 bound to the display screen is the binding end 11, and the binding end 11 is used to bind to the corresponding position of the display screen. Therefore, the area where the hole digging 20 treatment is carried out is on the binding end 11 of the FPC10.

[0027] Further, referring to Figure 2 Multiple gold fingers 111 are arranged on the binding end 11. The multiple gold fingers 111 are used to bind to the circuit of the display screen so that the FPC10 is connected to the circuit of the display screen. The hole digging 20 treatment is carried out on all the multiple gold fingers 111. There are multiple hole diggings 20 on each gold finger 111, and the multiple hole diggings 20 are evenly distributed on the gold finger 111.

[0028] Further, referring to Figure 2 The depth of the hole digging 20 on the gold finger 111 is less than the thickness of the FPC10, so that the hole digging 20 does not penetrate the FPC10, which can increase the softness of the FPC10 while not affecting the normal use of the FPC10.

[0029] Referring to Figure 2 Carrying out the hole digging 20 treatment on all the multiple gold fingers 111 bound to the display screen can reduce the pulling stress when the FPC10 is bound, making the FPC10 softer, so that in the binding of the binding end 11 of the FPC10 to the display screen, the FPC10 does not generate stress, thereby reducing the pulling on the display screen. The multiple hole diggings 20 can also increase the surface roughness of the binding end 11, thereby increasing the ACF bonding area when the FPC10 is bound to the display screen and improving the adhesion.

[0030] Further, referring to Figure 3 The FPC10 includes a substrate layer 101 and a copper foil layer 102. The copper foil layer 102 is a metal trace printed on the substrate layer 101 and is formed by etching.

[0031] Referring to Figure 3 The depth of the hole digging 20 is 10%-20% of the thickness of the copper foil layer 102, so that the hole digging 20 does not affect the copper foil layer 102 of the FPC10 and does not affect the wire connection between the FPC10 and the display screen.

[0032] Further, referring toFigure 3 The thickness of the base material layer 101 is 25 μm, and the thickness of the copper foil layer 102 is 18 μm - 28 μm.

[0033] Further, referring to Figure 4 , a PI film 30 is covered on the FPC 10. The PI film 30 is used for insulating the FPC 10 to ensure the insulation of the FPC 10.

[0034] Referring to Figure 4 , an epoxy resin adhesive layer 31 is provided on the inner side of the PI film 30. The epoxy resin adhesive layer 31 is used to contact the FPC 10 to fully bond and fix with the FPC 10 to ensure the insulation of the FPC 10.

[0035] The display FPC 10 is processed by digging holes 20 on the gold fingers 111 at the binding end 11 bound to the display. The depth of the dug holes 20 is less than the thickness of the FPC 10, so as to increase the softness of the binding end 11 without affecting the normal use of the FPC 10. When the FPC 10 is bound to the display at the binding end 11, no stress will be generated on the FPC 10, thereby reducing the pulling force on the display. Multiple dug holes 20 can also increase the surface roughness of the binding end 11, thereby increasing the ACF bonding area when the FPC 10 is bound to the display and improving the adhesion.

[0036] The above embodiments only represent several implementation manners of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A display screen FPC, characterized in that, Including: An FPC (10), one end of the FPC (10) is used to be bound to a display screen, the other end of the FPC (10) is used to be connected to a customer host, and a hole (20) is processed at the position where the FPC (10) is bound to the display screen.

2. The flexible printed circuit (FPC) of a display screen according to claim 1, characterized in that, One end of the FPC (10) bound to the display screen is a binding end (11), the binding end (11) is used to be bound to the corresponding position of the display screen, and a hole (20) is processed on the binding end (11).

3. The flexible printed circuit (FPC) of a display screen according to claim 2, wherein, A plurality of gold fingers (111) are arranged on the binding end (11), and the plurality of gold fingers (111) are used to be bound to the circuit of the display screen.

4. A display screen FPC according to claim 3, characterized in that, Holes (20) are processed on each of the plurality of gold fingers (111).

5. A display FPC according to claim 4, characterized in that, There are a plurality of holes (20) on each gold finger (111), and the plurality of holes (20) are evenly distributed on the gold finger (111).

6. The FPC of a display screen according to claim 5, wherein, The depth of the hole (20) is less than the thickness of the FPC (10), and the hole (20) does not penetrate through the FPC (10).

7. The FPC of a display screen according to claim 6, characterized in that, The FPC (10) includes a substrate layer (101) and a copper foil layer (102), and the copper foil layer (102) is a metal trace printed on the substrate layer (101).

8. A display FPC according to claim 7, characterized in that, The thickness of the substrate layer (101) is 25μm, and the thickness of the copper foil layer (102) is 18μm - 28μm.

9. The FPC of a display screen according to claim 8, characterized in that, The depth of the hole (20) is 10% - 20% of the thickness of the copper foil layer (102).

10. A display screen FPC according to claim 1, characterized in that, A PI film (30) for insulation is covered on the FPC (10).

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