CN210534492U

CN210534492U - Lamp strip subassembly, backlight unit and display device

Info

Publication number: CN210534492U
Application number: CN201921848390.2U
Authority: CN
Inventors: 刘春凤; 娄鹏举; 王学辉
Original assignee: InfoVision Optoelectronics Kunshan Co Ltd
Current assignee: InfoVision Optoelectronics Kunshan Co Ltd
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2020-05-15
Anticipated expiration: 2029-10-30

Abstract

The utility model relates to a liquid crystal display technology field discloses a lamp strip subassembly, backlight unit and display device. The lamp strip assembly comprises a PCB and an FPC board arranged on the PCB; the light bar assembly further comprises a connector, one end of the connector is electrically connected with the FPC board, the other end of the connector is electrically connected with the PCB board, and the connector can move on the PCB board so that the surface of the FPC board is attached to the PCB board. Through setting up the connector to moving on the PCB board, accomplish the equipment back when FPC board and connector, make the connector move on the PCB board to the position of adjustment connector on the PCB board, so that the surface and the PCB board laminating of FPC board can prevent that the FPC board from appearing the phenomenon of perk because size and equipment deviation cause the FPC board on the PCB board, guarantee LCD's thickness, and can make LCD normally show.

Description

Lamp strip subassembly, backlight unit and display device

Technical Field

The utility model relates to a liquid crystal display technology field especially relates to a lamp strip subassembly, backlight unit and display device.

Background

The lcd generally includes a liquid crystal panel and a backlight module, wherein the liquid crystal panel and the backlight module are disposed opposite to each other, and the backlight module provides a display light source to the liquid crystal panel to enable the liquid crystal panel to display an image. Because the LED lamp has the advantages of low power consumption, long service life, excellent color reproduction characteristics, and high contrast, the backlight source in the backlight module of the conventional liquid crystal display mainly uses the LED lamp. The LED light bar is formed by assembling LED particles on a PCB substrate or a Flexible Printed Circuit (FPC) having a band shape.

In the prior art, the FPC board is connected to the PCB through the connector, and when the FPC board is connected to the connector, the problem of the FPC board warping is likely to occur due to the size and the assembly deviation.

SUMMERY OF THE UTILITY MODEL

Based on above, an object of the utility model is to provide a lamp strip subassembly, backlight unit and display device can prevent the perk of FPC board, guarantees LCD's thickness, and can make LCD normally show.

In order to achieve the purpose, the utility model adopts the following technical proposal:

a light bar assembly, comprising:

the FPC board comprises a PCB board and an FPC board arranged on the PCB board;

the light bar assembly further comprises a connector, one end of the connector is electrically connected with the FPC board, the other end of the connector is electrically connected with the PCB board, and the connector can move on the PCB board so that the surface of the FPC board is attached to the PCB board.

As an optimal scheme of a lamp strip subassembly, be provided with first PIN needle on the connector, first PIN needle protrusion the lower surface setting of connector, be provided with on the PCB board with first PIN needle complex draw-in groove, the length of draw-in groove is greater than the length of first PIN needle, first PIN needle can remove in the draw-in groove.

As a preferred scheme of a lamp strip subassembly, be provided with the conductive part on the inner wall of draw-in groove.

Preferably, the conductive part is made of copper.

As a preferable aspect of the light bar assembly, a fixing member is further disposed on the PCB, and the fixing member is configured to fix the connector to the PCB.

As a preferred scheme of the light bar assembly, the fixing member includes buckles disposed on two sides of the clamping groove, a protruding portion is disposed on one side of each buckle close to the clamping groove, and a lower surface of each protruding portion can abut against an upper surface of the connector.

As a preferred embodiment of a light bar assembly,

the PCB is provided with a chute, the connector is provided with a fixed pin, the fixed pin is arranged to protrude out of the lower surface of the connector, and the fixed pin can move in the chute;

one side that the connector kept away from the FPC board is provided with first PIN needle, just the lower surface of first PIN needle with the lower surface coplane of connector, still be provided with on the PCB board with the second PIN needle that first PIN needle electricity is connected.

As a preferable scheme of the light bar assembly, the first PIN is welded on the second PIN.

In order to achieve the above object, the present invention also provides a backlight module including the above light bar assembly.

In order to achieve the above object, the present invention further provides a display device, which includes a display panel and a backlight module as above.

The utility model has the advantages that:

the utility model provides a lamp strip component, which ensures the normal use of the lamp strip component by arranging a connector, wherein one end of the connector is electrically connected with a FPC board, and the other end of the connector is electrically connected with a PCB board; through setting up the connector to moving on the PCB board, accomplish the equipment back when FPC board and connector, make the connector move on the PCB board to the position of adjustment connector on the PCB board, so that the surface and the PCB board laminating of FPC board can prevent that the FPC board from appearing the phenomenon of perk because size and equipment deviation cause the FPC board on the PCB board, guarantee LCD's thickness, and can make LCD normally show.

The utility model provides a backlight module, including above-mentioned lamp strip subassembly, because the connector can remove on the PCB board, make the surface and the laminating of PCB board of FPC board, easy operation can guarantee LCD's thickness, and can make LCD normally show.

The utility model also provides a display device, including above-mentioned backlight unit, this display device has better display effect.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is a schematic structural view of a light bar assembly provided by the present invention;

FIG. 2 is an enlarged partial schematic view of FIG. 1 at A;

fig. 3 is a schematic structural view of a PCB board in a light bar assembly provided in embodiment 1 of the present invention;

FIG. 4 is an enlarged partial schematic view of FIG. 3 at B;

fig. 5 is a schematic structural view of a connector in a light bar assembly provided in embodiment 1 of the present invention;

fig. 6 is a schematic structural view of a PCB board in a light bar assembly provided in embodiment 2 of the present invention;

FIG. 7 is an enlarged partial schematic view of FIG. 6 at C;

fig. 8 is a schematic structural view of a connector in a light bar assembly provided in embodiment 2 of the present invention.

In the figure:

1-a PCB board; 11-a card slot; 12-buckling; 13-a chute; 14-a second PIN;

2-FPC board;

3-a connector; 31-a first PIN; 32-fixed pins.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

Fig. 1 is a schematic structural view of a light bar assembly provided by the present invention; fig. 2 is an enlarged partial schematic view at a of fig. 1. As shown in fig. 1-2, the present embodiment provides a light bar assembly, which includes a PCB 1, an FPC 2, and a connector 3, wherein the FPC 2 is disposed on the PCB 1, one end of the connector 3 is electrically connected to the FPC 2, and the other end is electrically connected to the PCB 1. In the prior art, when the FPC board 2 is connected to the connector 3 and then connected to the PCB board 1, the FPC board 2 is easily tilted on the PCB board 1 due to a dimensional deviation of the FPC board 2 and an assembly deviation of the FPC board 2 and the connector 3. When the FPC board 2 is warped on the PCB 1, the FPC board 2 and the connector 3 are likely to be in poor contact, which may affect normal display of the liquid crystal display.

In order to solve the above problem, in the light bar assembly provided in this embodiment, the connector 3 can move on the PCB 1, so that the surface of the FPC board 2 is attached to the PCB 1. Specifically, after the FPC board 2 and the connector 3 are assembled, the connector 3 is moved on the PCB 1, so that the position of the connector 3 on the PCB 1 is adjusted, the surface of the FPC board 2 is attached to the PCB 1, the phenomenon that the FPC board 2 is tilted on the PCB 1 due to the size and the assembly deviation of the FPC board 2 is prevented, the thickness of the liquid crystal display is ensured, and the liquid crystal display can normally display.

A plurality of embodiments are given below to describe the light bar assembly of the present invention in detail.

Example 1

Fig. 3 is a schematic structural view of a PCB board in a light bar assembly provided in embodiment 1 of the present invention; FIG. 4 is an enlarged partial schematic view of FIG. 3 at B; fig. 5 is a schematic structural view of a connector in a light bar assembly provided in embodiment 1 of the present invention. As shown in fig. 3-5, the light bar assembly provided in this embodiment, wherein a first PIN 31 is provided on the connector 3, the first PIN 31 protrudes out of the lower surface of the connector 3, a card slot 11 matched with the first PIN 31 is provided on the PCB 1, the length of the card slot 11 is greater than that of the first PIN 31, and the first PIN 31 can move in the card slot 11.

Preferably, the connector 3 is provided with a plurality of first PIN PINs 31, and correspondingly, the PCB 1 is provided with a number of card slots 11 equal to the number of the first PIN PINs 31. After the FPC board 2 and the connector 3 are connected, the first PIN 31 is inserted into the corresponding card slot 11 of the PCB 1, and the first PIN 31 is moved along the card slot 11 to adjust the position of the connector 3 on the PCB 1, so that the surface of the FPC board 2 is attached to the PCB 1.

Further, a conductive portion is provided on an inner wall of the card slot 11. Preferably, the conductive portion is made of copper. Copper has better conductivity, lower electrical loss, low heat productivity and better stability.

In order to fix the connector 3 to the PCB 1 and enable the light bar assembly to be electrically connected to an external power source better, so that the LED lamp thereon can emit light stably, a fixing member is further disposed on the PCB 1, and the fixing member is configured to fix the connector 3 to the PCB 1.

In this embodiment, the fixing member includes two buckles 12 disposed on two sides of the slot 11, and a protrusion is disposed on one side of each buckle 12 close to the slot 11, and a lower surface of the protrusion can abut against an upper surface of the connector 3. Preferably, the latch 12 is made of an elastic material, and a distance between a protrusion on the latch 12 and a surface of the PCB board 1 is smaller than a thickness of the connector 3. When connector 3 is in the adjusting position on PCB board 1, operating personnel can pull up buckle 12 to make things convenient for first PIN needle 31 on connector 3 to remove in draw-in groove 11, accomplish the adjustment back when connector 3's position, utilize buckle 12's elastic force to firmly be fixed in on PCB board 1 with connector 3.

In other embodiments, a plurality of first protruding points may be further disposed on the lower surface of the protruding portion on the buckle 12, and a first groove adapted to the first protruding points is disposed on the connector 3, and the first groove may selectively cooperate with the first protruding points on the buckle 12 to fix the connector 3 and the buckle 12.

Preferably, the upper surface of the latch 12 is disposed obliquely, that is, the end of the upper surface of the latch 12 close to the slot 11 is lower than the end of the upper surface of the latch 12 far from the slot 11, so as to facilitate the sliding-in of the connector 3.

The specific connection process of the lamp strip assembly is as follows: (1) connecting the FPC board 2 with the connector 3; (2) placing the connector 3 between the two buckles 12, and pressing to insert the first PIN 31 on the connector 3 into the corresponding card slot 11; (3) an operator pulls the two buckles 12 away from each other, and adjusts the position of the connector 3 on the PCB 1 so as to attach the surface of the FPC board 2 to the PCB 1; (4) the latch 12 is released and the connector 3 is fixed to the PCB board 1 by the elastic force of the latch 12.

Example 2

Fig. 6 is a schematic structural view of a PCB board in a light bar assembly provided in embodiment 2 of the present invention; FIG. 7 is an enlarged partial schematic view of FIG. 6 at C; fig. 8 is a schematic structural view of a connector in a light bar assembly provided in embodiment 2 of the present invention. As shown in fig. 6 to 8, the light bar assembly provided in this embodiment is different from embodiment 1 in that a sliding slot 13 is provided on the PCB 1, a fixing PIN 32 is provided on the connector 3, the fixing PIN 32 protrudes out of a lower surface of the connector 3, and the fixing PIN 32 can move in the sliding slot 13, a first PIN 31 is provided on a side of the connector 3 away from the FPC board 2, and a lower surface of the first PIN 31 is coplanar with a lower surface of the connector 3, and a second PIN 14 electrically connected to the first PIN 31 is further provided on the PCB 1.

Preferably, one of the sliding slot 13 and the fixing pin 32 is provided with a plurality of second bumps, and the other is provided with a groove matched with the second bumps, so that when the position of the connector 3 on the PCB board 1 is adjusted, the second bumps can be clamped into the second grooves, thereby fixing the connector 3 and the PCB board 1. It can be understood that the second protruding points and the second grooves provided on the sliding groove 13 and the fixing pins 32 are smaller in size, so that the fixing of the connector 3 and the PCB board 1 can be realized without affecting the movement of the fixing pins 32 in the sliding groove 13.

In this embodiment, the first PIN 31 is fixed to the PCB 1 in such a manner that the first PIN 31 is soldered to the second PIN 14 after the position of the connector 3 on the PCB 1 is adjusted. The welding connection cost is lower, and the connection effect is better, and stability is high, can guarantee that connector 3 and PCB board 1 have better electric connectivity. Preferably, in this embodiment, the length of the second PIN 14 is appropriately lengthened, so as to ensure that the first PIN 31 on the connector 3 after completing the adjustment can be soldered with the second PIN 14.

The specific connection process of the lamp strip assembly is as follows: (1) connecting the FPC board 2 with the connector 3; (2) inserting the fixing pins 32 on the connector 3 into the corresponding chutes 13; (3) adjusting the position of the connector 3 on the PCB 1 to ensure that the surface of the FPC board 2 is attached to the PCB 1; (4) the first PIN 31 is fixed on the second PIN 14 by soldering.

The utility model also provides a backlight module, this backlight unit include above-mentioned lamp strip subassembly, because connector 3 can move on PCB board 1, make FPC board 2's surface and the laminating of PCB board 1, easy operation can guarantee LCD's thickness, and can make LCD normally show.

The utility model also provides a display device, including above-mentioned backlight unit, because FPC board 2 can be fine with the laminating of PCB board 1, make this display device have better display effect.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. A light bar assembly, comprising:

the PCB comprises a PCB (1) and an FPC (2) arranged on the PCB (1);

the lamp strip assembly further comprises a connector (3), one end of the connector is electrically connected with the FPC board (2), the other end of the connector is electrically connected with the PCB board (1), and the connector (3) can move on the PCB board (1) so that the surface of the FPC board (2) is attached to the PCB board (1).

2. The light bar assembly of claim 1, wherein a first PIN PIN (31) is arranged on the connector (3), the first PIN PIN (31) protrudes out of the lower surface of the connector (3), a card slot (11) matched with the first PIN PIN (31) is arranged on the PCB (1), the length of the card slot (11) is larger than that of the first PIN PIN (31), and the first PIN PIN (31) can move in the card slot (11).

3. The light bar assembly of claim 2, wherein the inner wall of the slot (11) is provided with a conductive portion.

4. The light bar assembly of claim 3, wherein the conductive portion is formed from copper.

5. A light bar assembly according to claim 2, wherein the PCB board (1) is further provided with a fixing member configured to fix the connector (3) to the PCB board (1).

6. The light bar assembly of claim 5, wherein the fixing member comprises buckles (12) arranged at two sides of the clamping groove (11), and a protrusion is arranged at one side of each buckle (12) close to the clamping groove (11), and the lower surface of the protrusion abuts against the upper surface of the connector (3).

7. The light bar assembly of claim 1,

a sliding groove (13) is formed in the PCB (1), a fixing pin (32) is arranged on the connector (3), the fixing pin (32) protrudes out of the lower surface of the connector (3), and the fixing pin (32) can move in the sliding groove (13);

one side that connector (3) kept away from FPC board (2) is provided with first PIN needle (31), just the lower surface of first PIN needle (31) with the lower surface coplane of connector (3), still be provided with on PCB board (1) with second PIN needle (14) that first PIN needle (31) electricity is connected.

8. The light bar assembly of claim 7, wherein the first PIN PIN (31) is soldered to the second PIN PIN (14).

9. A backlight module comprising the light bar assembly of any one of claims 1-8.

10. A display device comprising a display panel, further comprising the backlight module according to claim 9.