TWI426660B - Connector, backlight module and assembling method thereof, display and assembling method thereof - Google Patents

Description

Connector, backlight module, assembly method thereof, display device and assembly method thereof

The present invention relates to a connector and an assembly method, and more particularly to a backlight module and a display device using the connector, and a backlight module and a method of assembling the display device.

In a general liquid crystal display, since the liquid crystal display panel does not have the function of active illumination, a backlight module must be disposed under the liquid crystal display panel to provide a light source required for display of the liquid crystal display panel.

One way is to solder the lamp tube wire at the end of the lamp tube disposed in the light box with one end of the wire, and the other end of the wire is provided with a connector, and the connector is inserted on the corresponding connection on the circuit board. a seat for electrically connecting the lamp to the circuit board through the wire. However, the use of welding methods has the disadvantages of difficulty in heat dissipation, difficulty in soldering and maintenance, and the like.

Another way is to insert and fix the end of the tube. It is worth noting that because the two ends of each tube need to be fixed by two sockets respectively, in other words, the number of sockets used is twice that of the lamps, so the manufacturing cost cannot be effectively reduced. In addition, the staff must install the ends of each lamp tube when assembling, which is quite time-consuming. On the other hand, although the terminal of the socket is for holding the guide wire extending from both ends of the lamp tube, in practice, the lamp tube cannot be effectively fixed. When the backlight module is subjected to an external force, the position of the lamp tube is likely to be offset, and even the guide wire may be detached from the lamp tube due to vibration. Although rubber can be added to the socket to secure the end of the tube and the guide wire, the material cost is also increased.

The present invention provides a connector that is easy to assemble and has a good heat dissipation effect.

The invention provides a backlight module with good luminous efficiency.

The present invention provides a display device having good display quality.

The invention provides a method for assembling a backlight module capable of reducing assembly man-hours and manpower.

The present invention provides a method of assembling a display device capable of reducing assembly man-hours and manpower.

The present invention provides a connector comprising a flexible conductive portion and an insulating portion, wherein the flexible conductive portion is embedded in the insulating portion, and the insulating portion has a plurality of first openings for allowing the plurality of conductive terminals to pass through the first opening through the flexible conductive The parts are electrically connected to each other.

In an embodiment of the connector of the present invention, the insulating portion has a body and two protruding portions, and the flexible conductive portion is embedded in the body, and the body has the first opening, and the protruding portion is located at the opposite side of the body. On both sides, a plurality of first openings are located in front of the body. Additionally, one of the first openings may be located on the bottom surface of the body. The flexible conductive portion further has a plurality of second openings, each of which is correspondingly connected to one of the first openings, and the cross section of the second opening is tapered from the front surface of the body toward the back surface of the body, and the flexible conductive portion further has at least one protrusion at least One of the second openings is inside.

In an embodiment of the connector of the present invention, the insulating portion is made of rubber.

In an embodiment of the connector of the present invention, the soft conductive portion includes rubber and conductive particles doped in the rubber.

The invention further provides a backlight module, which comprises a light box, a plurality of the above connectors and a circuit board. The light box has a back plate, the connectors are disposed on opposite sides of the back plate of the light box, and the lamp tubes are disposed on the back plate in the light box, wherein each end of each of the tubes is a first conductive terminal. The circuit board is disposed under the backplane of the light box and has a plurality of second conductive terminals, wherein the first conductive terminal and the second conductive terminal pass through the first opening to make the lamp and the circuit board electrically connected to each other via the flexible conductive portion of the connector connection.

In an embodiment of the backlight module of the present invention, the plurality of first openings are located at the front of the body, and one of the first openings on the front surface of the body is located above the back plate, and one of the first openings is located at the back Below the board.

In an embodiment of the backlight module of the present invention, the portion of the flexible conductive portion exposed by the ground opening contacts the back plate of the light box to be grounded.

In an embodiment of the backlight module of the present invention, the opposite sides of the back panel of the light box have a plurality of through holes, and the body of the insulating portion of the connector corresponds to the through hole, and the protruding portion is clamped The edge of the hole. In addition, the back plate of the light box may further have a plurality of bent portions connected to the through holes, and a back surface of the body of the insulating portion of each connector bears against the corresponding bent portion.

The present invention further provides a display device including a display panel and a backlight module according to any one of the above, and the backlight module is disposed under the display panel.

The invention further provides a method for assembling a backlight module, comprising at least the following steps: providing a light box, wherein the opposite sides of the back plate of the light box have a plurality of through holes; and a plurality of connectors are correspondingly inserted into the through holes, wherein each The connector includes a flexible conductive portion and an insulating portion, the flexible conductive portion is embedded in the insulating portion, and the insulating portion has two first openings, wherein one of the first openings is located above the back plate of the light box, and the other first The opening is located below the back plate; a plurality of lamps and a circuit board are provided, and a first conductive terminal of each of the lamps is correspondingly inserted into the first opening of the insulating portion of the connector above the back plate and the flexible conductive portion Electrically connecting, and inserting a plurality of second conductive terminals of the circuit board into the first opening of the insulating portion of the connector under the back plate, and electrically connecting with the flexible conductive portion, so that the circuit board and the lamp tube are electrically conductive The parts are electrically connected to each other.

In an embodiment of the assembly method of the backlight module of the present invention, the method for forming the through hole includes cutting the back plate and bending the cut portion of the back plate to form the through hole and the plurality of through holes. The bent portion and the connector bears against the bent portion.

In an embodiment of the assembly method of the backlight module of the present invention, the method further includes grounding at least one of the connectors, wherein the connector is grounded by connecting the connector to a bottom surface of the backplane with a grounding opening and grounding The opening exposes a portion of the soft conductive portion, and the back plate contacts the soft conductive portion.

In an embodiment of the assembly method of the backlight module of the present invention, the method of forming the connector includes hot pressing or double material ejection.

In an embodiment of the assembly method of the backlight module of the present invention, the method further includes forming a plurality of second openings in each of the flexible conductive portions, and the cross section of the second openings is tapered from a front surface of the insulating portion toward a back surface of the insulating portion .

The present invention further provides a method for assembling a display device, comprising at least the following steps: assembling a backlight module by the assembly method of the backlight module according to any one of the above; and disposing a display panel on the backlight module.

Based on the above, the connector of the present invention has an easy assembly and a good heat dissipation effect. Applying the connector to the backlight module can simplify the assembly process of the backlight module and improve the luminous efficiency of the backlight module. Furthermore, the backlight module using the connector is applied to the display, which can make the display have good display quality, and the assembly of the display can save assembly manpower and man-hours.

The above described features and advantages of the present invention will be more apparent from the following description.

1 is a schematic view of a connector in accordance with an embodiment of the present invention. Referring to FIG. 1 , the connector 1000 includes a flexible conductive portion 1100 and an insulating portion 1200 . The flexible conductive portion 1100 is embedded in the insulating portion 1200 . The insulating portion 1200 has a plurality of first openings 1212 (shown in FIG. 1 ). )).

Specifically, the insulating portion 1200 is made of rubber, and the insulating portion 1200 has a body 1210 and two protruding portions 1220, and the flexible conductive portion 1100 composed of rubber and conductive particles doped in the rubber is embedded. In the body 1210, the body 1210 has the first opening 1212 described above, and the protrusion 1220 is located on opposite sides of the body 1210 where the first opening 1212 is not disposed.

In addition, the connector 1000 of the present embodiment may be formed by first thermally pressing the rubber and the conductive particles doped in the rubber to form the flexible conductive portion 1100, and then coating the rubber on the soft conductive portion 1100 to form the soft conductive portion 1100. Insulation portion 1200. In other embodiments, the connector 1000 can also be formed using a two-shot method.

The connector 1000 is applied to a backlight module, and the flexible conductive portion 1100 can well hold the components inserted therein and provide a conductive function to electrically connect the components to each other. Compared with the connector used in the conventional backlight module, the connector 1000 of the embodiment can simplify the assembly process of the backlight module. The details will be described below.

2 is a partial perspective view of a backlight module using the connector of FIG. 1, FIG. 3A is a partial perspective view of the backlight module using the connector of FIG. 1, and FIG. 3B is a cross-sectional view of the backlight module of FIG. Referring to FIG. 2, FIG. 3A and FIG. 3B simultaneously, in step S110, a light box 2000 is provided, wherein the opposite sides of the back plate 2100 of the light box 2000 have a plurality of through holes 2110. Forming the through hole 2110 on opposite sides of the back plate 2100 can cut the back plate 2100 to form the through hole 2110 as in step S112, wherein the cut portion is not cut from the back plate 2100, and the back plate is bent 2100 is cut to form a plurality of bends 2120 that are connected to the through holes 2110. In other embodiments, the back plate 2100 may be directly stamped to form a plurality of through holes 2110, but the bent portion 2120 is not formed.

In step S120, a plurality of connectors 1000 are correspondingly inserted into the through holes 2110, wherein one first opening 1212 of the connector 1000 is located above the back plate 2100 of the light box 2000, and the other first opening 1212 is located at the back plate 2100. Below. It is worth mentioning that when the connector 1000 is correspondingly inserted into the through hole 2110, the body 1210 of the insulating portion 1200 of the connector 1000 correspondingly passes through the through hole 2110, and the protruding portion 1220 of the insulating portion 1200 is caught in the through hole 2110. edge. In addition, the connector 1000 can bear further against the bent portion 2120 and is limited by the bent portion 2120.

Incidentally, in order to facilitate the distinction between the first opening 1212 of the connector 1000 corresponding to the insertion of the through hole 2110 on the back plate 2100, different components are inserted into the first opening 1212 at different positions, so the name and the component number are used. distinguish. The first opening 1212 on the back plate 2100 is the lamp insertion opening 1212a, and the first opening 1212 under the back plate 2100 is the circuit board insertion opening 1212b, wherein the cross-sectional shape of the lamp insertion opening 1212a is circular, and the circuit board The cross-sectional shape of the insertion opening 1212b is a rectangle.

In step S130, a plurality of lamps 2200 are provided, and a first conductive terminal 2210 of each of the lamps 2200 is correspondingly inserted into the lamp insertion port 1212a of the insulating portion 1200 of the connector 1000 above the back plate 2100, and the lamp 2200 It is electrically connected to the flexible conductive portion 1100. At the same time, the plurality of second conductive terminals 2310 of the circuit board 2300 are correspondingly inserted into the circuit board insertion opening 1212b of the insulating portion 1200 of the connector 1000 under the backplane 2100, and the circuit board 2300 is electrically connected to the flexible conductive portion 1100. In this manner, the circuit board 2300 and the lamp tube 2200 are electrically connected to each other via the flexible conductive portion 1100 of the connector 1000. The circuit board 2300 can be an inverter board with an adjustment power source (such as converting direct current into alternating current). The power supply is provided to the lamp via the connector, and the circuit board 2300 may also have a dimming circuit thereon to control the brightness of the light source.

As described above, the connector 1000 is used in the backlight module 3000, and the first conductive terminal 2210 of the lamp 2200 and the second conductive terminal 2310 of the circuit board 2300 are respectively inserted into the first opening 1212 of the insulating portion 1200 (the lamp insertion port) The 1212a and the board are embedded in the port 1212b) and electrically connected to the flexible conductive portion 1100. In this embodiment, the lamp 2200 and the circuit board 2300 are electrically connected by only one component (the connector 1000). The use of wires is reduced compared to conventional soldering methods. In addition, the flexible conductive portion 1100 covers the first conductive terminal 2210 and the second conductive terminal 2310, and the conductive portion 1100 is not between the first conductive terminal 2210 and the second conductive terminal 2310. The gap, so it is not necessary to use the socket at the same time and arrange the rubber in the socket to have a good heat dissipation effect.

Referring to FIG. 2, FIG. 3A and FIG. 3B, in step S140, each flexible conductive portion 1100 may further have a plurality of second openings 1110, and a cross section of the second opening 1110 corresponding to the tube insertion opening 1212a is along The front face 1214 of the body 1210 from the insulating portion 1200 tapers toward a back surface 1216 of the body 1210. For example, the second opening 1110 is shaped as a tapered cylinder with its pointed end facing the back side 1216 of the body 1210. In this way, after the first conductive terminal 2210 of the lamp 2200 is inserted, it can be fixed in the second opening 1110 well and firmly.

4 is a schematic view of a protrusion and a conductive terminal of a flexible conductive portion. Please refer to FIG. 2, FIG. 3B and FIG. 4 at the same time. In addition, the flexible conductive portion 1100 can further have at least one protrusion 1120 located in the second opening 1110, so that the first conductive terminal 2210 of the corresponding inserted tube 2200 can be (or The second conductive terminal 2310) of the circuit board 2300 is more closely connected to the flexible conductive portion 1100, and the electrical connection is more stable.

Figure 5 is a perspective view of a connector for grounding, and Figure 6 is a schematic cross-sectional view of the connector using the connector of Figure 5. Referring to FIG. 5 and FIG. 6 , one of the first openings 1212 of the body 1210 of the insulator 1200 of the connector 1000 is located on the bottom surface 1218 of the body 1210 . For convenience, it is named as the grounding opening 1212c. The opening 1212c is for exposing a portion of the flexible conductive portion 1100. In addition, the backing plate 2100 of the light box 2000 can have an insertion end 2130, and the insertion end 2130 is in contact with a portion of the flexible conductive portion 1100 exposed by the grounding opening 1212c to be grounded. In the present embodiment, the connector 1000 for grounding has no board insertion opening 1212b, and the insertion end 2130 is inserted into the grounding opening 1212c to be grounded. In other embodiments not shown, the flexible conductive portion 1100 may be directly in contact with the backing plate 2100 beyond the grounding opening 1212c. Those skilled in the art can change the shape of the grounding opening 1212c and the insertion end 2130 according to actual needs, and also achieve the purpose of grounding.

Figure 7 is a schematic illustration of a display using the backlight module of Figure 3B. Referring to FIG. 2 and FIG. 7 simultaneously, in step S150, the display panel 4000 is placed on the backlight module 3000 to be assembled into the display 5000.

In summary, with the connector of the present invention, the lamp and the circuit board can be plugged to the connector for electrical connection, so that the utility model has the advantages of easy assembly, easy rework, cost reduction, and simplified assembly process. In addition, the conductive terminals of the lamp tube and the circuit board can be firmly inserted into the connector, so that the electrical stability is advantageous, and the backlight module using the connector has good luminous efficiency. In other words, a display using a backlight module having the connector can have a good display effect.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

1000. . . Connector

1100. . . Soft conductive part

1110. . . Second opening

1120. . . Protrusion

1200. . . Insulation

1202. . . back

1210. . . Ontology

1212. . . First opening

1212a. . . Lamp insertion port

1212b. . . Board embedded

1212c. . . Grounding opening

1214. . . front

1216. . . back

1218. . . Bottom

1220. . . Protruding

2000. . . Light box

2100. . . Backplane

2110. . . Through hole

2120. . . Bending section

2130. . . Insertion end

2200. . . Lamp

2210. . . First conductive terminal

2300. . . Circuit board

2310. . . Second conductive terminal

3000. . . Backlight module

4000. . . Display panel

5000. . . monitor

1 is a schematic view of a connector in accordance with an embodiment of the present invention.

2 is a flow chart showing the assembly of a backlight module using the connector of FIG. 1.

3A is a partial perspective view of a backlight module using the connector of FIG. 1.

3B is a cross-sectional view of the backlight module of FIG. 3A.

4 is a schematic view of a protrusion and a conductive terminal of a flexible conductive portion.

Figure 5 is a perspective view of a connector for grounding.

Figure 6 is a schematic cross-sectional view of the ground using the connector of Figure 5.

Figure 7 is a schematic illustration of a display using the backlight module of Figure 3B.

1000. . . Connector

1100. . . Soft conductive part

1110. . . Second opening

1200. . . Insulation

1210. . . Ontology

1212. . . First opening

1212a. . . Lamp insertion port

1212b. . . Board embedded

1214. . . front

1216. . . back

2100. . . Backplane

2110. . . Through hole

2120. . . Bending section

2200. . . Lamp

2210. . . First conductive terminal

2300. . . Circuit board

2310. . . Second conductive terminal

Claims (16)

A backlight module includes: a light box having a back plate; a plurality of connectors disposed on opposite sides of the back plate, wherein each connector includes: a flexible conductive portion; and an insulating portion, wherein the flexible conductive portion The portion is embedded in the insulating portion, the insulating portion has a plurality of first openings; a plurality of lamps disposed on the back plate in the light box, wherein each end of each of the tubes is a first conductive terminal; And a circuit board disposed under the backplane of the light box, and having a plurality of second conductive terminals, wherein the first conductive terminals and the second conductive terminals pass the first openings to enable the lamps and The circuit board is electrically connected to each other via the flexible conductive portions of the connectors. The backlight module of claim 1, wherein the insulating portion of each connector has a body and two protrusions, and the flexible conductive portion of each connector is embedded in the insulating portion. In the body, the body has the first openings, and the protrusions are located on opposite sides of the body. The backlight module of claim 2, wherein the first openings are located in front of the body. The backlight module of claim 3, wherein the flexible conductive portion of each connector further has a plurality of second openings, each of which is correspondingly connected to one of the first openings, and the plurality of Cross section of the two openings The front face of the body tapers toward a back side of the body. The backlight module of claim 4, wherein the flexible conductive portion further has at least one protrusion located in at least one of the second openings. The backlight module of claim 3, wherein one of the first openings is located on a bottom surface of the body. The backlight module of claim 6, wherein the bottom surface has the soft conductive portion of the exposed portion of the ground opening, and the exposed flexible conductive portion contacts the back plate of the light box to be grounded. The backlight module of claim 2, wherein the opposite sides of the back panel of the light box have a plurality of through holes, and the bodies of the insulating portions of the connectors correspond to the through holes. Through holes, and the protrusions are stuck at the edges of the through holes. The backlight module of claim 8, wherein the back plate of the light box further has a plurality of bent portions connected to the through holes, and one of the bodies of the insulating portion of each connector The back side bears against one of the bends. The backlight module of claim 1, wherein the flexible conductive portion comprises rubber and conductive particles doped in the rubber. A display device comprising: a display panel; and a backlight module according to any one of claims 1-10, disposed under the display panel. A method for assembling a backlight module, comprising: Providing a light box, wherein one of the opposite sides of the light box has a plurality of through holes; a plurality of connectors are correspondingly inserted into the through holes, wherein each of the connectors includes a flexible conductive portion and an insulating portion, The flexible conductive portion is embedded in the insulating portion, and the insulating portion has two first openings, one of the first openings is located above the back plate of the light box, and the other one is located below the back plate And providing a plurality of lamps and a circuit board, and inserting a first conductive terminal of each of the lamps into the first openings of the insulating portions of the connectors above the backplane and The flexible conductive portion is electrically connected, and the plurality of second conductive terminals of the circuit board are correspondingly inserted into the first openings of the insulating portions of the connectors under the backplane, and electrically connected to the flexible conductive portion The electrical connection is such that the circuit board and the lamps are electrically connected to each other via the flexible conductive portion. The method for assembling a backlight module according to claim 12, wherein the method of forming the through holes comprises cutting the back plate and bending a portion of the back plate that is cut to form the through holes And a plurality of bent portions connected to the through holes, and the connectors bear against the bent portions. The method of assembling a backlight module according to claim 12, further comprising grounding at least one of the connectors. The method of assembling a backlight module according to claim 14, wherein the method of grounding at least one of the connectors is such that the connector contacts a bottom surface of the backplane to have a ground opening to expose Part of the flexible conductive portion, and the back plate is in contact with the soft conductive portion. A method of assembling a display device, comprising: assembling a backlight module according to the assembly method of the backlight module according to any one of claims 12-15; and disposing a display panel on the backlight module.