Backlight FPC, backlight module and display module

Abstract

The utility model discloses a backlight FPC, backlight module and display module wherein the backlight FPC includes: backlight FPC body, backlight FPC body includes: device area, connecting area and joint area, connecting area connects device area and joint area, the device area is provided with a plurality of LED bonding pad, the joint area is provided with a plurality of LED bonding pads, and the LED bonding pad is provided with a plurality of LED bonding pads. A backlight connector used for being electrically connected with a module FPC is formed on the connector area, a plurality of grounding areas are formed on the side, away from the connector area, of the device area in an extending mode, each grounding area comprises a grounding bonding pad, and the grounding bonding pads are connected with a grounding circuit in the backlight FPC. The backlight FPC has the advantages that the grounding area and the grounding bonding pad are additionally arranged on the backlight FPC, the grounding conductive effect and the heat dissipation effect can be improved, the double-faced adhesive tape can be conveniently arranged at the grounding area, the fixing capacity of the backlight FPC is improved, and the problem of looseness is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of display modules, in particular to a backlight FPC, a backlight module and a display module. Background Art

[0002] In a liquid crystal display module, a backlight module is required as a brightness source. In a conventional backlight module, LED lights are arranged on a backlight FPC, and light is guided through a light guide plate of the backlight module, and the connector of the backlight module is connected to the module FPC of the display module. The existing backlight FPC has the following problems: 1. Since the LED lights generate a large amount of heat, the backlight FPC is prone to affect the performance and lifespan of the LED lights due to poor heat dissipation; 2. The antistatic performance of the backlight FPC circuit is poor; 3. When the backlight FPC is arranged in the backlight module, there may still be a risk of loosening, which will affect the light output of the backlight.

[0003] Therefore, there are defects in the prior art and improvement is needed. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome at least some deficiencies of the prior art and provide a backlight FPC, a backlight module and a display module.

[0005] The technical solution of the utility model is as follows: The utility model provides a backlight FPC, including: a backlight FPC body, the backlight FPC body includes: a device area, a connection area and a connector area, the connection area connects the device area and the connector area, a plurality of LED pads are formed on the device area, a backlight connector for realizing electrical connection with the module FPC is formed on the connector area, a plurality of grounding areas are formed on the side of the device area away from the connector area by extension, each grounding area includes a grounding pad, and the grounding pad is connected to the grounding circuit in the backlight FPC.

[0006] Further, the backlight FPC has two grounding areas, and the two grounding areas are respectively located at both end portions of the device area.

[0007] Further, the grounding pad is composed of a plurality of line segments.

[0008] Further, the line width of the line segment is 0.3 mm.

[0009] The utility model also provides a backlight module, including the above-mentioned backlight FPC, and LED devices are correspondingly arranged on the LED pads.

[0010] Further, the backlight module further includes a backlight frame member and a light guide plate. The light guide plate is disposed within the backlight frame member. The LED devices provided on the backlight FPC are correspondingly disposed on the light incident surface of the light guide plate. The ground pad is electrically connected to the conductive member of the backlight frame member.

[0011] Further, the solution further includes an optical film assembly, and the optical film assembly is stacked on the light exit surface of the light guide plate.

[0012] Further, a double-sided adhesive is provided on the back surface of the ground pad, and the ground connection area is fixedly adhered to the components in the backlight module through the double-sided adhesive.

[0013] The present utility model further provides a display module, including: the above-mentioned backlight module, a liquid crystal module, and a module FPC. The liquid crystal module is stacked above the backlight module, and the module FPC is bonded and connected to the liquid crystal module.

[0014] Adopting the above solution, the beneficial effects of the present utility model are as follows: By newly providing a ground connection area and a ground pad on the backlight FPC, the grounding and conduction effect and the heat dissipation effect can be improved, and it is convenient to provide a double-sided adhesive at the ground connection area to enhance the fixing ability of the backlight FPC and avoid the problem of loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of the backlight FPC according to the first embodiment of the present utility model.

[0016] Figure 2 It is a schematic structural diagram of a ground pad of the backlight FPC according to the first embodiment of the present utility model.

[0017] Figure 3 It is a schematic structural diagram of a ground pad of the backlight FPC according to the second embodiment of the present utility model.

[0018] Figure 4 It is a schematic structural diagram of the backlight module according to an embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Please refer to Figure 1 and Figure 2, in this embodiment, the present utility model provides a backlight FPC 1, which includes: a backlight FPC body, and the backlight FPC body includes: a device area 11, a connection area 12, and a connector area 13. The connection area 12 connects the device area 11 and the connector area 13. A plurality of LED pads are formed on the device area 11, and a backlight connector for realizing electrical connection with the module FPC is formed on the connector area 13. A plurality of grounding areas 14 are formed by extending the device area 11 on the side far from the connector area 13. Each grounding area 14 includes a grounding pad, and the grounding pad is a whole piece of grounding copper foil 141. The grounding pad is connected to the grounding line in the backlight FPC 1 and is electrically connected to the components in the backlight module that can be grounded, so as to export the static electricity in the backlight FPC 1. The newly set grounding pad in this solution not only has grounding performance, but also has certain heat conduction performance. Setting a double-sided tape on the back of the grounding area 14 to paste with the components of the backlight module can also improve the stability of the backlight FPC 1 and avoid the problem of loosening.

[0021] Further, in this embodiment, the backlight FPC 1 has two grounding areas 14, and the two grounding areas 14 are respectively located at both end portions of the device area 11.

[0022] Please refer to Figure 3 , this solution also provides a backlight FPC of another embodiment. In this embodiment, the difference from the previous embodiment is that the grounding pad is not a whole piece of copper foil, but is composed of line segments (copper lines) 142. The line segments 142 are bent and surrounded in the grounding area, and there are gaps between adjacent line segments 142. This structural setting can obtain better ESD (electrostatic discharge) performance than the form of the grounding pad of the whole piece of copper foil in the previous embodiment and avoid electrostatic shock. In this embodiment, the line width of the line segment 142 is 0.3 mm.

[0023] Please refer to Figure 4 , the present utility model also provides a backlight module, which includes the above-mentioned backlight FPC 1, and LED devices are correspondingly arranged on the LED pads in the backlight FPC 1.

[0024] Further, the backlight module further includes a backlight frame member 2 and a light guide plate. The light guide plate is arranged in the backlight frame member 2. The LED devices arranged on the backlight FPC 1 are correspondingly arranged on the light incident surface of the light guide plate. The grounding pad is electrically connected to the conductive member of the backlight frame member 2. In this embodiment, the backlight frame member 2 is a glue-iron integrated frame, then the grounding pad will be electrically connected to the iron frame in the glue-iron integrated frame, so as to realize the grounding and conductive performance.

[0025] Further, the solution further includes an optical film assembly, which is stacked on the light-emitting surface of the light guide plate.

[0026] Further, a double-sided adhesive is provided on the back surface of the ground pad, and the ground area is fixedly adhered to the components in the backlight module through the double-sided adhesive. Specifically, in this embodiment, the ground area is fixedly adhered to the reflective film provided on the light guide plate through the double-sided adhesive.

[0027] The present invention also provides a display module, including the above-mentioned backlight module, a liquid crystal module, and a module FPC. The liquid crystal module is stacked above the backlight module. The module FPC is bonded to the liquid crystal module. A driving IC is bonded to the liquid crystal display module, and a cover plate is provided on the upper layer of the liquid crystal module.

[0028] In summary, the beneficial effects of this solution are as follows: By newly adding a ground area and a ground pad on the backlight FPC, the grounding and heat dissipation effects can be improved, and it is convenient to set a double-sided adhesive at the ground area to enhance the fixing ability of the backlight FPC and avoid loosening problems.

[0029] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A backlight FPC, characterized in that, Comprising: A backlight FPC body, the backlight FPC body comprising: a device area, a connection area, and a connector area. The connection area connects the device area and the connector area. A plurality of LED pads are formed on the device area, and a backlight connector for electrically connecting with a module FPC is formed on the connector area. A plurality of grounding areas are formed by extending the device area on a side away from the connector area. Each grounding area includes a grounding pad, and the grounding pad is connected to a grounding line in the backlight FPC.

2. The backlight FPC according to claim 1, wherein There are two grounding areas, and the two grounding areas are respectively located at two end portions of the device area.

3. The backlight FPC according to claim 1, wherein The grounding pad is composed of a plurality of line segments.

4. The backlight FPC according to claim 3, wherein The line width of the line segment is 0.3 mm.

5. A backlight module, characterized in that, Comprising the backlight FPC according to any one of claims 1 to 4, and LED devices are correspondingly provided on the LED pads.

6. The backlight module according to claim 5, wherein It further includes a backlight frame member and a light guide plate. The light guide plate is disposed within the backlight frame member. The LED devices provided on the backlight FPC are correspondingly disposed on the light incident surface of the light guide plate, and the grounding pad is electrically connected to a conductive member of the backlight frame member.

7. The backlight module according to claim 6, wherein It further includes an optical film assembly, and the optical film assembly is stacked on the light emitting surface of the light guide plate.

8. The backlight module according to claim 7, wherein A double-sided adhesive is provided on the back surface of the grounding pad, and the grounding area is adhered and fixed to a component in the backlight module through the double-sided adhesive.

9. A display module, characterized in that, Comprising the backlight module according to any one of claims 5 to 8.

10. The display module according to claim 9, wherein, It further includes a liquid crystal module and a module FPC. The liquid crystal module is stacked above the backlight module, and the module FPC is bound and connected to the liquid crystal module.

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