Retractable anti-tear backlight FPC (Flexible Printed Circuit) piece

Abstract

The utility model discloses a retractable anti-tear backlight FPC (Flexible Printed Circuit) piece, and particularly relates to the technical field of backlight FPCs. According to the utility model, when the backlight FPC is processed through the stretching assembly, the positive wire and the negative wire are driven to be welded with the main screen FPC by moving the connecting sheet, and in the process, when the FPC is pulled by external force, the main gasket and the auxiliary gasket can have a space for deformation through the arrangement of arc structures in the middle parts of the main gasket and the auxiliary gasket, so that the deformation of the main gasket and the auxiliary gasket is avoided. And the distance between the connecting piece and the LED 2 is increased by stretching the main gasket and the auxiliary gasket, so that an operator can have a larger operation space, and loss caused by tearing due to the fact that pulling force generated during processing directly acts on the joint of the FPC and the LED is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of backlight FPC, and more specifically, the utility model relates to a retractable and tear-resistant backlight FPC component. Background Art

[0002] A backlight FPC component is a flexible printed circuit board specifically designed for backlight applications. Such FPC components are usually applied to backlight display devices, such as liquid crystal displays (LCDs), organic light-emitting diodes (OLEDs), etc., through welding to provide backlighting.

[0003] At present, the backlight FPC is made of polyimide as the base material, with a printed circuit made and the circuit embedded on a flexible and thin plastic sheet. It is connected to the main screen FPC by welding. During the welding process, whether it is automatic welding by equipment or manual welding by hand, there is a pulling action on the backlight FPC. Moreover, there is also a situation where the backlight monomer is repaired and reused, which will also cause a pulling action on the FPC. Since the FPC material has poor flexibility and the connection point with the LED is relatively fragile, it is easy to cause tearing, resulting in the breakage of the internal electrical circuit of the backlight FPC and the inability to light up the backlight, leading to the inability of the display screen to display. Summary of the Utility Model

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the utility model provides a retractable and tear-resistant backlight FPC component. The technical problem to be solved by the present invention is: to avoid the pulling force generated during the processing operation directly acting on the connection between the FPC and the LED, causing tearing and resulting in losses.

[0005] To achieve the above object, the utility model provides the following technical solution: A retractable and tear-resistant backlight FPC component, including a backlight and an LED disposed at the bottom of the backlight. An external stretching component connected to the LED is disposed outside the LED, and a protection component connected to the stretching component is further disposed outside the LED.

[0006] In a preferred embodiment, the stretching component includes a main gasket fixedly installed on one side of the outer wall of the LED. A positive wire is embedded inside the main gasket. One end of the outer wall of the main gasket is provided with a secondary gasket connected to the LED. A negative wire is embedded inside the secondary gasket. Arc-shaped structures are disposed in the middle of both the main gasket and the secondary gasket. A connecting piece is fixedly connected to the side of the secondary gasket and the main gasket away from the LED.

[0007] In a preferred embodiment, the protection component includes an elastic band disposed between the main gasket and the secondary gasket. Two ends of the elastic band are fixedly connected to the connecting piece and the LED respectively. A limiting cover is fixedly connected to the top of the elastic band. An adhesive rod extending into the interior of the limiting cover is fixedly connected to the outer wall of the LED.

[0008] In a preferred embodiment, a moving sliding groove matching the adhesive rod is arranged inside the limiting cover.

[0009] In a preferred embodiment, the elastic band is made of a highly elastic rubber material.

[0010] In a preferred embodiment, a retaining ring is fixedly connected to the outer wall of the adhesive rod on the side close to the connecting piece. A limiting sliding groove matching the retaining ring is arranged inside the moving sliding groove.

[0011] Technical effects of the present utility model:

[0012] 1. By providing a stretching component, when processing the backlight FPC, the positive wire and the negative wire are driven by moving the connecting piece to be welded to the main screen FPC. During this process, when the FPC is pulled by an external force, due to the arc-shaped structures in the middle parts of the main gasket and the secondary gasket, there is space for the main gasket and the secondary gasket to deform. The main gasket and the secondary gasket are stretched to increase the distance between the connecting piece and the LED, enabling the operator to have a larger operating space and preventing the pulling force generated during the processing operation from directly acting on the connection between the FPC and the LED, thus avoiding tearing and loss.

[0013] 2. By providing a protection component, the deformation of the elastic band drives the limiting cover to move towards the connecting piece until the side of the retaining ring close to the LED abuts against the inner wall of the limiting sliding groove. At this time, the limiting cover can no longer move, thereby restricting the maximum stretching distance of the elastic band, and thus controlling the deformation degree of the main gasket and the secondary gasket to prevent the main gasket and the secondary gasket from being overstretched and torn. Description of the Drawings

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is a schematic diagram of the stretching component and the protection component of the present utility model;

[0016] Figure 3 is of the present utility model Figure 2 magnified view of part A in.

[0017] The reference numerals are: 1, backlight; 2, LED; 3, main gasket; 4, auxiliary gasket; 5, positive wire; 6, negative wire; 7, connecting piece; 8, telescopic band; 9, limiting cover; 10, glue stick. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the technical field of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] As Figures 1 - 3 shown, the present invention provides a retractable and tear-resistant backlight FPC component, including a backlight 1 and an LED 2 disposed at the bottom of the backlight 1. A stretching component connected to the LED 2 is disposed outside the LED 2, and a protection component connected to the stretching component is further disposed outside the LED 2. The stretching component includes a main gasket 3 fixedly installed on one side of the outer wall of the LED 2. A positive wire 5 is embedded in the main gasket 3. An auxiliary gasket 4 connected to the LED 2 is disposed at one end of the outer wall of the main gasket 3. A negative wire 6 is embedded in the auxiliary gasket 4. Arc-shaped structures are disposed in the middle of the main gasket 3 and the auxiliary gasket 4. A connecting piece 7 is fixedly connected to the side of the auxiliary gasket 4 and the main gasket 3 away from the LED 2. When processing the backlight FPC, by moving the connecting piece 7, the positive wire 5 and the negative wire 6 are driven to perform a welding operation with the main screen FPC. During this process, when the FPC is pulled by an external force, due to the arc-shaped structures provided in the middle of the main gasket 3 and the auxiliary gasket 4, the main gasket 3 and the auxiliary gasket 4 are provided with a space for deformation. By stretching the main gasket 3 and the auxiliary gasket 4, the distance between the connecting piece 7 and the LED 2 is increased, enabling the operator to have a larger operating space and avoiding the pulling force generated during the processing operation from directly acting on the connection between the FPC and the LED, resulting in tearing and losses.

[0020] As Figure 2 and Figure 3As shown, the protection component includes an elastic belt 8 disposed between the main gasket 3 and the auxiliary gasket 4. The two ends of the elastic belt 8 are fixedly connected to the connecting piece 7 and the LED 2 respectively. A limiting cover 9 is fixedly connected to the top of the elastic belt 8. A glue stick 10 extending into the interior of the limiting cover 9 is fixedly connected to the outer wall of the LED 2. A moving chute matching the glue stick 10 is provided inside the limiting cover 9. The elastic belt 8 is made of a highly elastic rubber material. A retaining ring is fixedly connected to the outer wall of the glue stick 10 on the side close to the connecting piece 7. A limiting chute matching the retaining ring is provided inside the moving chute. When the connecting piece 7 moves to drive the main gasket 3 and the auxiliary gasket 4 to deform, the movement of the connecting piece 7 drives the elastic belt 8 to stretch through the connection with the elastic belt 8. The deformation of the elastic belt 8 drives the limiting cover 9 to move towards the connecting piece 7 until the side of the retaining ring close to the LED 2 abuts against the inner wall of the limiting chute. At this time, the limiting cover 9 can no longer move, thus restricting the maximum stretching distance of the elastic belt 8, thereby controlling the deformation degree of the main gasket 3 and the auxiliary gasket 4 and preventing the main gasket 3 and the auxiliary gasket 4 from being overstretched and torn.

[0021] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A retractable tear-resistant backlight FPC component, comprising a backlight (1) and an LED (2) arranged at the bottom of the backlight (1), characterized in that: A stretching component connected to the LED (2) is arranged outside the LED (2), and a protection component connected to the stretching component is also arranged outside the LED (2).

2. The shrinkable tear-resistant backlight FPC component according to claim 1, characterized in that: The stretching assembly comprises a main gasket (3) fixedly mounted on one side of the outer wall of the LED (2), a positive electrode line (5) being embedded in the interior of the main gasket (3), a sub-gasket (4) connected to the LED (2) being provided at one end of the outer wall of the main gasket (3), a negative electrode line (6) being embedded in the interior of the sub-gasket (4), an arc structure being provided in the middle of the main gasket (3) and the sub-gasket (4), and a connecting piece (7) being fixedly connected to the side of the sub-gasket (4) and the main gasket (3) away from the LED (2).

3. The shrinkable tear-resistant backlight FPC component according to claim 2, characterized in that: The protective component comprises a telescopic band (8) arranged between the main gasket (3) and the auxiliary gasket (4), the two ends of the telescopic band (8) being fixedly connected to the connecting piece (7) and the LED (2) respectively, the top of the telescopic band (8) being fixedly connected to a limit cover (9), and the outer wall of the LED (2) being fixedly connected to a glue stick (10) extending to the inside of the limit cover (9).

4. The shrinkable tear-resistant backlight FPC component according to claim 3, characterized in that: A movable slide groove for the glue stick (10) to move is arranged inside the limiting cover (9).

5. The shrinkable tear-resistant backlight FPC component according to claim 3, characterized in that: The telescopic belt (8) is made of a rubber material with high elasticity.

6. The shrinkable tear-resistant backlight FPC component according to claim 4, characterized in that: A retaining ring is fixedly connected to the outer wall of the glue stick (10) on one side close to the connecting piece (7), and a limiting sliding groove for the retaining ring to move is arranged inside the movable sliding groove.

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