CN217589480U - Electric connector, backlight module and display device - Google Patents

Abstract

The utility model relates to a show technical field, especially relate to an electric connector, backlight unit and display device. The electric connector comprises a fixed plate and a crimping plate, wherein the fixed plate is arranged on a printed circuit board, an avoiding groove is formed in the fixed plate and is opposite to a connecting part on the printed circuit board, the crimping plate can slide relative to the fixed plate to open or cover the avoiding groove, and when the crimping plate opens the avoiding groove, a light bar can extend into the avoiding groove and is placed on the connecting part of the printed circuit board; when the pressing plate covers and establishes the dodging groove, the pressing plate can support and press the light bar so as to enable the light bar to be connected with the connecting portion of the printed circuit board in a pressing mode. According to the mode, the protection of the lamp strip is improved, the lamp strip is prevented from being damaged in the plugging process, the phenomenon that the lamp strip is too long or too short can be matched, and the product yield is improved. Backlight unit and display device have improved the protection to the lamp strip through using above-mentioned electric connector to can match the phenomenon of lamp strip overlength or short, improve the product yield.

Description

Electric connector, backlight module and display device

Technical Field

The utility model relates to a show technical field, especially relate to an electric connector, backlight unit and display device.

Background

In recent years, with the rapid development of flat panel display technology, liquid crystal display devices have been widely used in various information, communication, and consumer products because of their advantages such as small size, light weight, high image quality, and low driving voltage. Since the liquid crystal in the liquid crystal display panel of the liquid crystal display device does not have the light emitting characteristic, in order to adjust the display brightness of the liquid crystal display device, a light source device, such as a backlight module, needs to be provided for the liquid crystal display panel of the liquid crystal display device, so as to provide a light beam with sufficient brightness and uniform distribution for the liquid crystal display panel. With the rapid development of backlight source technology in backlight modules, LED backlight gradually enters industrialization, and thus gradually replaces Cold Cathode Fluorescent Lamps (CCFLs) to become the mainstream of backlight sources in backlight modules.

In the backlight module of the liquid crystal display panel currently using the LED as the backlight source, an LED chip is soldered to a Flexible Printed Circuit (FPC) or a Printed Circuit Board (PCB) to form an LED Light bar (Light bar), so that the LED Light bar is applied to the backlight module of the liquid crystal display panel as the backlight source.

The flexible circuit board in the LED lamp strip is connected to the printed circuit board mostly by adopting the LED lamp strip, and the flexible circuit board and the printed circuit board can be connected and conducted through the electric connector.

The connection mode of the existing electric connector has the following problems:

(1) The bent part of the flexible circuit board is easy to be damaged due to improper operation or repeated plugging, and if the bent part is contacted with the conductive part, the LED chip is easy to be short-circuited and the like;

(2) Due to the existence of part tolerance, lamp strip manufacturing and assembling tolerance, the phenomenon that the outgoing line length of the LED lamp strip is longer or shorter after the LED lamp strip is assembled on the electric connector is easily caused. When the outgoing line length of the LED lamp strip is short, the LED lamp strip cannot be assembled, or the LED lamp strip is poorly lit after being inserted; when the outgoing line length of the LED lamp strip is long, the LED lamp strip can bulge, the appearance is poor, and the production efficiency and the delivery yield are affected.

Therefore, a new electrical connector, a backlight module and a display device are needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electric connector, backlight unit and display device to improve the protection to the lamp strip, avoid the lamp strip plug damage to appear, and can match lamp strip overlength or the phenomenon of short excessively, avoid the lamp strip problem that the pressfitting is bad to appear, improve the product yield.

To achieve the purpose, the utility model adopts the following technical proposal:

an electrical connector, comprising:

the fixing plate is arranged on the printed circuit board, and an avoiding groove is formed in the fixing plate and is opposite to the connecting part on the printed circuit board; and

the pressing plate can slide relative to the fixing plate to open or cover the avoidance groove, and when the pressing plate opens the avoidance groove, the light bar can extend into the avoidance groove and be placed on the connecting part of the printed circuit board; when the crimping board covers and establishes when dodging the groove, the crimping board can support and press the lamp strip, so that the lamp strip with printed circuit board's connecting portion crimping switches on.

As a preferred scheme, be provided with the crimping arch on the lower terminal surface of crimping board, work as the crimping board lid is established when dodging the groove, the crimping arch can support and press the lamp strip, so that the lamp strip with printed circuit board's connecting portion are inconsistent tight.

Preferably, the pressing surface of the pressing protrusion is smooth.

Preferably, the electrical connector further comprises:

the resetting piece is configured to drive the crimping plate to slide relative to the fixing plate to reset so that the crimping plate covers the avoiding groove.

Preferably, a guide post is fixed on the fixing plate, the guide post extends along the sliding direction of the crimping plate, a sliding part is arranged on the crimping plate, and the sliding part is slidably sleeved on the guide post;

the reset piece is a spring, the spring is sleeved on the guide post, and two ends of the spring are respectively abutted against the fixed plate and the sliding part.

Preferably, the fixing plate is provided with a sliding groove extending along the sliding direction of the crimping plate, the guide post and the sliding part are both located in the sliding groove, and two ends of the spring are respectively abutted to the bottom wall of the sliding groove and the sliding part.

As a preferred scheme, the avoiding groove comprises an extending opening and an avoiding opening which are communicated, and the lamp strip can penetrate through the extending opening to extend out of the fixing plate after being placed on the connecting portion of the printed circuit board in the avoiding groove.

A backlight module comprises a light bar, a printed circuit board and the electric connector, wherein the electric connector is configured to connect and conduct the connecting part of the light bar and the printed circuit board.

Preferably, a first conduction layer is arranged on the connecting portion of the printed circuit board, a second conduction layer is arranged on the light bar, and the crimping plate can abut against the light bar to enable the second conduction layer to be in crimping conduction with the first conduction layer.

A display device comprises a display panel and the backlight module, wherein the backlight module is configured to provide backlight for the display panel.

The utility model has the advantages that:

the utility model provides an electric connector includes fixed plate and crimping board, and the fixed plate sets up on printed circuit board, has seted up on the fixed plate and dodged the groove, dodges the groove and just to the connecting portion on the printed circuit board, and the crimping board can slide in order to open or cover and set up and dodge the groove relative to the fixed plate, and when the crimping board opened and dodged the groove, the lamp strip can stretch into and dodge in the groove and place on the connecting portion of printed circuit board; when the pressing plate covers and establishes the dodging groove, the pressing plate can support and press the light bar so as to enable the light bar to be connected with the connecting portion of the printed circuit board in a pressing mode. Because the connecting portion of lamp strip and printed circuit board switches on through the crimping, switch on for traditional through pegging graft, avoided the lamp strip to appear damaging at the plug in-process, improved the protection to the lamp strip. In addition, stretch into the lamp strip and dodge in the groove and place on printed circuit board's connecting portion to support through the crimping board and press the realization to switch on, can match the phenomenon of lamp strip overlength or short excessively, avoided the phenomenon that the crimping is bad or the lamp strip is bloated to appear, improved the product yield.

The utility model provides a backlight module realizes through using above-mentioned electric connector that the crimping between lamp strip and the printed circuit board switches on, has avoided the lamp strip to appear the damage at the plug in-process, has improved the protection to the lamp strip. Moreover, the phenomenon of overlong or overlong short lamp strips can be matched, the phenomenon of poor crimping or bulging of the lamp strips is avoided, and the product yield is improved.

The utility model provides a display device provides the backlight through using above-mentioned backlight unit for display panel, has avoided the lamp strip to appear damaging at the plug in-process, has improved the protection to the lamp strip to can match lamp strip overlength or the phenomenon of short excessively, avoid appearing the phenomenon that the crimping is bad or the lamp strip is bloated, improve the product yield.

Drawings

Fig. 1 is a schematic structural view of a pressure welding plate covering an avoidance groove according to an embodiment of the present invention;

fig. 2 is a schematic structural view of the avoiding groove opened by the crimping plate according to the embodiment of the present invention;

fig. 3 is a first schematic structural diagram of an electrical connector according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of an electrical connector according to an embodiment of the present invention.

In the figure:

100. an electrical connector; 1. a fixing plate; 11. an avoidance groove; 111. an extension port; 112. avoiding the mouth; 12. a guide post; 13. a sliding groove; 2. a pressure welding plate; 21. pressing and connecting the bulges; 22. a sliding part; 3. a reset member;

200. a printed circuit board; 210. a first conductive layer;

300. a light bar; 310. a second conductive layer.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner.

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 application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. 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", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings, and are only for convenience of description and simplification of operation, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific 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 be limiting.

Fig. 1 is a schematic structural view of the embodiment of the present invention, which provides a structure of thepressing plate 2 covering the avoidinggroove 11, and fig. 2 is a schematic structural view of the embodiment of the present invention, which provides a structure of thepressing plate 2 opening the avoidinggroove 11.

As shown in fig. 1 and fig. 2, the present embodiment provides anelectrical connector 100, and theelectrical connector 100 can achieve conductive connection between alight bar 300 and a printedcircuit board 200, so as to ensure that thelight bar 300 can emit light smoothly. Specifically, theelectrical connector 100 includes a fixingplate 1 and a crimpingplate 2, wherein the fixingplate 1 is disposed on the printedcircuit board 200, an avoidinggroove 11 is formed in the fixingplate 1, the avoidinggroove 11 faces a connecting portion on the printedcircuit board 200, the crimpingplate 2 can slide relative to the fixingplate 1 to open or cover the avoidinggroove 11, and when the crimpingplate 2 opens the avoidinggroove 11, thelight bar 300 can extend into the avoidinggroove 11 and be placed on the connecting portion on the printedcircuit board 200; when the avoidinggroove 11 is formed in thepressing plate 2, thepressing plate 2 can abut against thelight bar 300, so that thelight bar 300 is connected with the connecting portion of the printedcircuit board 200 in a pressing and conducting manner.

Because the connecting portion oflamp strip 300 and printedcircuit board 200 switches on through the crimping under the effect of pressing of crimpingboard 2, switch on for traditional through pegging graft, avoidedlamp strip 300 to appear damaging at the plug in-process, improved the protection tolamp strip 300. In addition, through stretching intolamp strip 300 and dodging in thegroove 11 and place on printedcircuit board 200's connecting portion to the realization that supports through crimpingboard 2 switches on, can match the phenomenon oflamp strip 300 overlength or short excessively, avoided appearing the phenomenon that the crimping is bad orlamp strip 300 is bloated, improved the product yield.

The embodiment further provides a backlight module, which includes alight bar 300, a printedcircuit board 200 and theelectrical connector 100, wherein theelectrical connector 100 is used for connecting and conducting the connecting portion of thelight bar 300 and the printedcircuit board 200. The backlight module provided by the embodiment realizes the crimping conduction between thelight bar 300 and the printedcircuit board 200 by applying theelectric connector 100, so that the damage of thelight bar 300 in the plugging process is avoided, and the protection of thelight bar 300 is improved. And can match the phenomenon oflamp strip 300 overlength or short, avoid appearing the phenomenon that the crimping is bad orlamp strip 300 is bloated, improve the product yield.

Preferably, as shown in fig. 2, a firstconductive layer 210 is disposed on the connection portion of the printedcircuit board 200, a secondconductive layer 310 is disposed on thelight bar 300, the secondconductive layer 310 on thelight bar 300 can extend into the avoidinggroove 11 and is placed on the firstconductive layer 210 of the printedcircuit board 200, and the press-contact plate 2 can press thelight bar 300 to make the secondconductive layer 310 and the firstconductive layer 210 press-contact and conduct, so as to achieve conductive connection between the printedcircuit board 200 and thelight bar 300. Through setting up firstconductive layer 210 and secondconductive layer 310, the thickness oflamp strip 300 with printedcircuit board 200 junction has significantly reduced to whole backlight unit's thickness has been reduced. Specifically, the firstconductive layer 210 and the secondconductive layer 310 can be designed as gold finger layers, so as to ensure the reliability and stability of the conductive connection between the printedcircuit board 200 and thelight bar 300.

It should be noted that thelight bar 300 includes an LED chip and a flexible circuit board, the LED chip is soldered on the flexible circuit board, and a secondconductive layer 310 is correspondingly disposed on the flexible circuit board.

The embodiment also provides a display device, which can be a liquid crystal display device and comprises a display panel and the backlight module, wherein the backlight module is used for providing a backlight source for the display panel. The display device provided by the embodiment provides a backlight source for the display panel by applying the backlight module, avoids damage to thelight bar 300 in the plugging process, improves protection on thelight bar 300, can match the phenomenon that thelight bar 300 is too long or too short, avoids the phenomenon that the crimping is poor or thelight bar 300 is bulged, and improves the product yield.

Fig. 3 is a first schematic structural diagram of theelectrical connector 100 according to the embodiment of the present invention, and fig. 4 is a second schematic structural diagram of theelectrical connector 100 according to the embodiment of the present invention.

Referring to fig. 3 and 4, a specific structure of theelectrical connector 100 is described, as shown in fig. 3 and 4, a lower end surface of thepress plate 2 is provided with apress protrusion 21, and when thepress plate 2 covers the avoidinggroove 11, thepress protrusion 21 can press against thelight bar 300, so that the secondconductive layer 310 on thelight bar 300 is abutted against the firstconductive layer 210 on the printedcircuit board 200. Through setting up crimpingarch 21, guaranteed that 2 covers of crimping board establish and dodge whengroove 11, be interference fit between crimpingboard 2 and thelamp strip 300, forlamp strip 300 improves suitable support pressure, guarantee thatsecond conduction layer 310 leads to more reliable and more stable withfirst conduction layer 210 butt.

Preferably, the pressing surface of thepressing protrusion 21 is smooth, so that rigid pressing between thepressing protrusion 21 and thelight bar 300 is avoided when thepressing plate 2 covers theavoidance groove 11, protection of thelight bar 300 is improved, and thelight bar 300 is prevented from being damaged due to pressing of a sharp piece. Specifically, the crimpingprotrusions 21 may be trapezoidal or cylindrical, and the present embodiment does not specifically limit the specific shape of the crimpingprotrusions 21, as long as the abutting surfaces of the crimpingprotrusions 21 are smoothly arranged.

In addition, as shown in fig. 3 and 4, theelectrical connector 100 further includes areset element 3, and thereset element 3 is configured to drive the crimpingplate 2 to slide and reset relative to the fixingplate 1, so that the crimpingplate 2 covers the avoidinggroove 11, thereby achieving abutting conduction between thefirst conducting layer 210 and thesecond conducting layer 310.

Specifically, when promoting crimpingboard 2 and slipping to open and dodgegroove 11 relative to fixedplate 1, the piece that resets 3 compressed under the effect of pressing of crimpingboard 2 this moment, after placing thesecond conduction layer 310 onlamp strip 300 on thefirst conduction layer 210 of printedcircuit board 200,unclamp crimping board 2, crimpingboard 2 was established and is dodgedgroove 11 at the automatic lid of the effect of the elastic restoring force of piece that resets 3 this moment, realized that the pressing betweenfirst conduction layer 210 and thesecond conduction layer 310 switches on. It should be noted that thereset member 3 may be a spring, and the spring has better elasticity and has the advantages of being convenient to install and low in cost.

In the present embodiment, as shown in fig. 3 and 4, aguide post 12 is fixed on the fixingplate 1, theguide post 12 extends along the sliding direction of the crimpingplate 2, a slidingportion 22 is disposed on the crimpingplate 2, the slidingportion 22 is slidably sleeved on theguide post 12, the restoringmember 3 is sleeved on theguide post 12, and two ends of the restoringmember 3 are respectively abutted against the fixingplate 1 and the slidingportion 22. Through setting upguide post 12, not only provide the guide effect for the relative fixedplate 1's of crimpingboard 2 slippage, also be convenient for realize the location installation topiece 3 that resets.

Preferably, the fixedplate 1 is provided with a slidinggroove 13 extending along the sliding direction of the compressionjoint plate 2, theguide post 12 and the slidingpart 22 are both located in the slidinggroove 13, and two ends of the spring are respectively abutted to the bottom wall of the slidinggroove 13 and the slidingpart 22. By arranging the slidinggroove 13 on the fixingplate 1 to accommodate the guidingpost 12 and the slidingpart 22, the upper end surface of the fixingplate 1 can be flush with the upper end surface of the crimpingplate 2, so that the wholeelectrical connector 100 is more compact and beautiful.

Further, as shown in fig. 3 and 4, the two opposite sides of the crimpingplate 2 perpendicular to the sliding direction are provided with the resettingpieces 3, so that the crimpingplate 2 can slide relative to the fixingplate 1 more stably and reliably.

In this embodiment, as shown in fig. 2 and 4, dodgegroove 11 including themouth 111 that stretches out and dodgemouth 112 that is linked together, thesecond conducting layer 310 onlamp strip 300 can pass after placing on printedcircuit board 200'sfirst conducting layer 210 in dodginggroove 11 and stretch outmouth 111 and stretch out fixedplate 1, make thiselectric connector 100 can not block the afterbody oflamp strip 300 overlength, thereby guarantee no matter howlong lamp strip 300 of size, the homoenergetic enough realizes and the stable conduction between printedcircuit board 200, avoidlamp strip 300 overlength the phenomenon of tyning to appear, thereby lead to pressing the in-process oflamp strip 300 to appear the abnormal sound, the product yield has been guaranteed.

It is to be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. An electrical connector, comprising:

the fixing plate (1) is arranged on the printed circuit board (200), an avoiding groove (11) is formed in the fixing plate (1), and the avoiding groove (11) is opposite to the connecting part on the printed circuit board (200); and

the compression joint plate (2) can slide relative to the fixing plate (1) to open or cover the avoidance groove (11), and when the compression joint plate (2) opens the avoidance groove (11), the light bar (300) can extend into the avoidance groove (11) and be placed on the connecting part of the printed circuit board (200); when the pressing plate (2) covers the avoiding groove (11), the pressing plate (2) can support and press the light bar (300) so that the light bar (300) is connected with the connecting part of the printed circuit board (200) in a pressing mode.

2. The electrical connector of claim 1, wherein a pressing protrusion (21) is disposed on a lower end surface of the pressing plate (2), and when the pressing plate (2) covers the avoiding groove (11), the pressing protrusion (21) can press the light bar (300) to make the light bar (300) abut against the connecting portion of the printed circuit board (200).

3. The electrical connector according to claim 2, wherein the pressing face of the crimping projection (21) is smoothly provided.

4. The electrical connector of any one of claims 1 to 3, further comprising:

the resetting piece (3) is configured to drive the crimping plate (2) to slide relative to the fixing plate (1) to reset so that the crimping plate (2) covers the avoiding groove (11).

5. The electrical connector according to claim 4, wherein a guide post (12) is fixed on the fixing plate (1), the guide post (12) extends along the sliding direction of the crimping plate (2), a sliding portion (22) is arranged on the crimping plate (2), and the sliding portion (22) is slidably sleeved on the guide post (12);

the reset piece (3) is a spring, the spring is sleeved on the guide post (12), and two ends of the spring are respectively abutted against the fixed plate (1) and the sliding part (22).

6. The electrical connector according to claim 5, wherein the fixing plate (1) is provided with a sliding groove (13) extending along a sliding direction of the crimping plate (2), the guide post (12) and the sliding portion (22) are both located in the sliding groove (13), and two ends of the spring are respectively abutted against a bottom wall of the sliding groove (13) and the sliding portion (22).

7. The electrical connector according to any one of claims 1 to 3, wherein the avoiding groove (11) comprises an extending opening (111) and an avoiding opening (112) which are communicated with each other, and the light bar (300) can pass through the extending opening (111) and extend out of the fixing plate (1) after being placed on the connecting portion of the printed circuit board (200) in the avoiding groove (11).

8. A backlight module, comprising a light bar (300), a printed circuit board (200) and the electrical connector of any one of claims 1 to 7, wherein the electrical connector is configured to connect and conduct the connection portion between the light bar (300) and the printed circuit board (200).

9. The backlight module as claimed in claim 8, wherein a first conductive layer (210) is disposed on the connecting portion of the printed circuit board (200), a second conductive layer (310) is disposed on the light bar (300), and the pressing plate (2) can press the light bar (300) to make the second conductive layer (310) and the first conductive layer (210) in pressing connection.

10. A display device comprising a display panel and the backlight module of claim 8 or 9, the backlight module being configured to provide a backlight source for the display panel.

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