KR20080027005A - Device connector and backlight assembly having the same - Google Patents

Abstract

A device connector and a backlight assembly having the same are provided to connect a circuit board and a PCB electrically without lead soldering, thereby preventing environmental pollution and improving assemblability. A container(210) is installed in a side of a PCB(Printed Circuit Board)(160) to contain a lead withdrawn from a circuit device(150) in the other side of the PCB. A contact connects the lead contained into the container with a line on a side of the PCB electrically. A fixing member fixes the container on a side of the PCB. A cap(220) is installed to cover the outer surface of the container to prevent a flow of the lead contained into the container.

Description

DEVICE CONNECTOR AND BACKLIGHT ASSEMBLY HAVING THE SAME}

1 is a printed circuit board according to an embodiment of the present invention. An exploded perspective view showing circuit elements and device connectors.

FIG. 2 is a cross-sectional view taken along the line II ′ of FIG. 1. FIG.

3 is a perspective view illustrating a liquid crystal display device to which a device connector according to another embodiment of the present invention is applied.

4 is an exploded perspective view illustrating the liquid crystal display of FIG. 3.

FIG. 5 is a detailed view of area A of FIG. 4; FIG.

FIG. 6 is an exploded perspective view of the lamp, the board, and the device connector of FIG. 5. FIG.

FIG. 7 is a cross-sectional view of the lamp, the board, and the device connector taken along the line II-II ′ of FIG. 5.

* Description of the symbols for the main parts of the drawings *

150: circuit element 151: lead

160: printed circuit board 163: first hole

164: second hole 165: third hole

200: device connector 210: housing

211, 411: guide grooves 213, 413: body

214, 215, 414, 415: first and second locking portions

216, 416: protrusion 218, 418: contact

220, 420: cap 320: backlight assembly

330: optical sheet 350: a plurality of lamps

351: glass tube 352, 353: first and second lead

400: first connector 401: second connector

410: first storage portion 411: second storage portion

The present invention relates to a connector, and more particularly, to a connector for electrically connecting a substrate to an element without using a conductive bonding material, and a backlight assembly having the same.

In general, a method of electrically connecting a circuit element on a substrate has been used in which the lead of the circuit element is placed on the substrate and soldered with lead at the position where the circuit element is to be mounted.

Recently, the electrical connection of circuit devices or cables, which are widely used in electronic products, has been devised to prevent soldering using lead due to environmental regulations.

Soldering using lead as described above will be described as an example of the electrical connection of the lamp and the lamp driver of the backlight assembly for a liquid crystal display device.

The lead wire drawn out from the lamp is soldered with lead in a state of being in contact with the output line of the lamp driver, whereby the lamp and the lamp driver are electrically connected.

As described above, the electrical connection using lead not only contaminated the environment by lead, but also had problems such as equipment addition, complicated assembly process, and increased assembly time by soldering process using lead.

An object of the present invention is to provide an element connector capable of electrically connecting a substrate and a circuit element without using lead.

In addition, an object of the present invention is to provide a device connector that can reduce the material cost, reduce the assembly process and assembly time by applying a new connection structure of the substrate and the circuit device, and a barite assembly having the same.

In order to achieve the above object, the device connector according to an embodiment of the present invention,

An accommodating part installed on one surface of the substrate and accommodating a lead drawn from the circuit element on the other side of the substrate;

A contact for electrically connecting the lead accommodated in the housing to a wire on one surface of the substrate; And

It comprises a fixing member for fixing the receiving portion to one surface of the substrate.

In addition, the backlight assembly according to another embodiment of the present invention,

A plurality of lamps including leads drawn to both sides;

A plurality of substrates formed with conductive patterns to which driving signals are applied to the lamps; And

A contact portion provided on one surface of the substrate to receive the lead drawn from the lamp on the other side of the substrate, and a contact for electrically connecting the lead contained in the accommodation portion to a wire on one surface of the substrate and the housing; It comprises a plurality of connectors including a fixing member for fixing the portion to one surface of the substrate.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a printed circuit board according to an embodiment of the present invention. 2 is an exploded perspective view illustrating a circuit device and a connector, and FIG. 2 is a cross-sectional view taken along the line II ′ of FIG. 1.

1 and 2, the printed circuit board 160 according to the exemplary embodiment of the present invention has a conductive pattern (not shown) to which an electrical signal is applied, and a circuit element (not shown) on the conductive pattern. 150) is mounted. The printed circuit board 160 and the circuit device 150 are electrically connected by the device connector 200.

The circuit device 150 includes a pin-shaped lead 151 for electrically contacting the conductive pattern of the printed circuit board 160.

The printed circuit board 160 has a first hole 163 through which the lead 151 of the circuit device 150 can pass, and the element connector 200 around the first hole 163. Second and third holes 164 and 165 are formed to fix the same.

The device connector 200 includes an accommodating part 210 for accommodating the lead 151 and a cap 220 for fixing the lead 151 in a form surrounding an outer surface of the accommodating part 210. It is composed.

The accommodating part 210 has a shape in which the lead 151 is inserted into a body part 213 having a guide groove 211 for guiding the lead 151, and protrudes at both ends of one side of the body part 213. First and second catching portions 214 and 215 inserted into the second and third holes 164 and 165 of the printed circuit board 160 and the first and second catching portions 214, And a protrusion 216 having a protruding shape on a side surface corresponding to the 215.

The body portion 213, the protrusion 216, the first and second locking portions 214 and 215 are integrally formed, and the material of the accommodating portion 210 may be formed of plastic, rubber, and metal having a predetermined elasticity. It can be made of either.

The first and second locking parts 214 and 215 are formed in a hook shape and inserted into the second and third holes 164 and 165. That is, the first and second locking portions 214 and 215 pass through the second and third holes 164 and 165, and the printed circuit board 160 may be moved in the X and X 'directions by a predetermined elastic force. It is fixed on the opposite side.

The guide groove 211 of the body portion 213 is formed in the longitudinal direction of the lead 151 in a region corresponding to the lead 151 to have a structure for guiding the lead 151. Therefore, the guide groove 211 may be formed to extend from the body portion 213 to the protruding surface of the protrusion 216.

A contact 218 made of a conductive material is provided on an inner wall surface of the guide groove 211 and one side surface of the body portion 213 corresponding to the printed circuit board 160.

The contact 218 contacts the conductive patterns of the lead 151 and the printed circuit board 160, thereby electrically connecting the printed circuit board 160 and the circuit device 150.

The cap 220 having a groove (not shown) corresponding to the shape of the protrusion 216 is covered on the protrusion 216.

The cap 220 has a groove having the same shape as the protrusion 216 and is made of a material having a strong strength of plastic or metal.

The cap 220 is a structure capable of generating a predetermined pressure when the protrusion 216 is fastened, and a pressure is generated in the direction of the lead 151 at the time of fastening to firmly fix the lead 151. have.

The device connector 200 according to the embodiment of the present invention as described above has one receiving portion 210 and one cap 220 for mounting one circuit element 150 on the printed circuit board 160. It is made of a structure having, but not limited to this, it may be made of a structure having two receiving portions and one cap made of a shape corresponding to each other. That is, the circuit elements may be mounted on the printed circuit board by caps arranged to face the bodies of the two accommodating parts so as to cover the outer surface of the two accommodating parts so as to be merged in a facing state. Although the connector consisting of two housings and one cap as described above is not described with reference to the drawings, as a structure included in the scope of the technical idea of the present invention, it may be regarded as one of various embodiments.

As described above, according to the present invention, in the method of mounting the circuit element 150 on the printed circuit board 160, the accommodating part 210 and the cap 220 are not electrically connected by conventional soldering. By using this, it is possible to prevent environmental pollution due to soldering and to improve assemblability.

In addition, the present invention has a simple fastening structure of the printed circuit board 160 and the circuit element 150, there is an advantage in that the printed circuit board 160 or the circuit element 150 is easily removable in the case of failure.

3 is a perspective view illustrating a liquid crystal display device to which a connector according to another exemplary embodiment of the present invention is applied, and FIG. 4 is an exploded perspective view of the liquid crystal display device of FIG. 3.

As shown in FIGS. 3 and 4, a liquid crystal display device having an element connector according to another exemplary embodiment includes a liquid crystal panel 310 displaying an image and a backlight providing light to the liquid crystal panel 310. The assembly 320 and a top case 300 disposed in a form surrounding the edge of the liquid crystal panel 310.

The liquid crystal panel 310 includes a thin film transistor array substrate and a color filter substrate bonded to each other to maintain a uniform cell gap, and a liquid crystal layer interposed between the thin film transistor array substrate and the color filter substrate.

The backlight assembly 320 may include a box-shaped bottom cover 380 having an upper surface, a reflective plate 370 attached or applied to the front surface of the bottom cover 380, and a predetermined interval on the reflective plate 370. A plurality of lamps 350 which are arranged to be disposed, first and second substrates 360 and 361 having conductive patterns formed at both ends of the lamp 350, both ends of the lamp 350, and first and First and second supporter sides 340 and 341 seated on the second substrates 360 and 361, and optically mounted on the first and second supporter sides 340 and 341 to diffuse and focus light. The sheet 330 is configured to be included.

First and second lamp driving units 390 and 391 mounted with an inverter (not shown) for supplying driving voltages to the plurality of lamps 350 are disposed on the bottom of the bottom cover 380.

The plurality of lamps 350 are connected to the first and second internal electrodes (not shown) provided at both ends of the glass tube 351 and the first and second internal electrodes to the outside of the glass tube 351. Cold cathode fluorescent lamps (CCFLs) including the first and second leads 352 and 353 to be drawn out.

The first and second internal electrodes and the first and second leads 352 and 353 may be made of the same material, and the first and second internal electrodes and the first and second leads 352 and 353 may be formed of the same material. For easy description of the invention, the first and second internal electrodes and the first and second leads 352 and 353 are described according to their positions, and the first and second leads 352 and 353 may be lamps. It can be seen that the first and second internal electrodes of 350 protrude out of the glass tube 351.

As described above, the lamp 350 of the present invention has been described as an internal electrode fluorescent lamp by way of example, but is not limited thereto. An external electrode fluorescent lamp (EEFL) having an electrode portion outside the glass tube may be provided. It may be arranged.

The first and second substrates 360 and 361 have a plurality of first to sixth holes 363, 364, 365, 366, 367, and 368 formed at predetermined intervals. First and second wires 393 and 394 are drawn out at one side of the first and second substrates 360 and 361, and are provided at ends of the first and second wires 393 and 394, respectively. And first and second connectors 395 and 396 electrically connected to the second lamp driving units 390 and 391.

A plurality of first and fourth holes 363 and 366 formed in the first and second substrates 360 and 361 are provided with a metal material (not shown) on the inner surface of the edge. The metal material will be described with reference to FIGS. 5 and 6.

Although the first and second substrates 360 and 361 described above are not shown in detail, a conductive pattern is formed to be connected to the metal material to apply a driving voltage, and the balance of the plurality of lamps 350 is provided. Capacitors are mounted for balance. The conductive pattern is formed in a parallel structure so that the plurality of lamps 350 can be driven in parallel.

At the ends of the first and second leads 352 and 353 passing through the first and fourth holes 363 and 366, a plurality of agents are provided to prevent the flow of the first and second leads 352 and 353. First and second connectors 400 and 401 are provided.

The plurality of first and second connectors 400 and 401 include a plurality of first and second accommodating parts 410 and 411 and a plurality of first and second caps 420 and 421.

The first and second receivers 410 and 411 are fixed to the first and second substrates 360 and 361 to penetrate the first and second substrates 360 and 361. , 353, and the first and second caps 420 and 421 are fastened to the first and second accommodating parts 410 and 411 so as to accommodate the first and second leads 352 and 353. ) To fix more rigidly.

As described above, the first and second holes 363 and 366 pass through the first and second leads 352 and 353 and the first and second holes penetrate the first and second holes 363 and 366. The two leads 352 and 353 are accommodated in the first and second accommodating parts 410 and 411.

The first accommodating part 410 is fixed to the second and third holes 364 and 365, and a second accommodating part 411 is fixed to the fifth and sixth holes 367 and 368.

The direct type liquid crystal display according to the exemplary embodiment of the present invention described above includes the first and second leads 352 and 353 drawn at both ends of the plurality of lamps 350. , A simple structure for inserting and fixing the first and fourth holes 363 and 366 formed in the 361, and reducing the number of wires and connectors connected to each end of each lamp 350 by soldering. The assembly process (soldering) and assembly time can be reduced.

In addition, the present invention provides a first and a second number of first and second leads 352 and 353 passing through the first and fourth holes 363 and 366 of the first and second substrates 360 and 361. It is a structure for fixing using the payment parts 410, 411 and the first and second caps 420, 421, and removes the lamp holder that has been conventionally provided for fixing the lamp 350, and thus the material cost, assembly process and Assembly time can be reduced.

In addition, the present invention has a simple fastening structure between the lamp 350 and the first and second substrates 360 and 361, and it is easy to detach when the lamp 350 is defective.

FIG. 5 is a detailed view of region A of FIG. 4, FIG. 6 is an exploded perspective view of the lamp, the board, and the connector of FIG. 5, and FIG. 7 is a lamp cut along the line II-II ′ of FIG. 5; It is sectional drawing which shows a board | substrate and an element connector.

5 to 7, the lamp 350 of the present invention is connected to the internal electrode 354 provided in the glass tube 351 and the internal electrode 354 to the outside of the glass tube 351. A first lead 352 to be drawn out.

The first substrate 360 disposed at the end of the lamp 350 has a first hole 363 through which the first lead 352 is transmitted, and the first accommodating portion around the first hole 363. Second and third holes 364 and 365 to which the 410 is fixed are formed.

The inner wall surface of the first hole 363 includes a metal material 369 made of a conductive material, such as aluminum (Al) and copper (Cu).

The first lead 352 passing through the first hole 363 is fixed by the first accommodating part 410 and the first cap 420.

The first accommodating part 420 is provided with a body part 413 having a guide groove 411 for guiding the first lead 352, and is provided at one side of the body part 413 to provide the second and third parts. First and second locking portions 414 and 415 inserted into the holes 364 and 365, and protrusions 416 protruding to the other side of the body portion 413.

An inner wall surface of the guide groove 411 and one surface of the body portion 413 corresponding to the metal material 369 are provided with a contact 418 electrically connected to the metal material 369.

The contact 418 is in contact with the first lead 352 and the metal material 369, thereby electrically connecting the lamp 350 and the first substrate 360.

The body 413, the protrusion 416, and the first and second locking parts 414 and 415 of the first accommodating part 410 are integrally formed, and the material of the first accommodating part 410 is predetermined. It may be made of any one of plastic, rubber and metal having elasticity.

The first and second catching portions 414 and 415 are formed in a hook shape and inserted into the second and third holes 364 and 365. That is, the first and second locking parts 414 and 415 pass through the second and third holes 364 and 365 of the substrate 360 corresponding to the first accommodating part 410, and thus the first substrate. It is fastened to the side of the 360.

The guide groove 411 of the body portion 413 is formed in a longitudinal direction of the first lead 352 in a region corresponding to the first lead 352 to guide the first lead 352. Is done. Therefore, the guide groove 411 may be formed to extend from the body portion 413 to the protrusion 416.

The protrusion 416 has a rectangular pillar shape and is inserted into the first cap 420.

The first cap 420 has a groove (not shown) having the same shape as the protrusion 416 and is made of a material having a strong strength of plastic or metal material.

The groove of the first cap 420 is formed to have the same size as the protrusion 416 so as to generate a predetermined pressure when the protrusion 416 is fastened. Accordingly, the protrusion 416 inserted into the groove of the first cap 420 generates a predetermined pressure in the direction of the first lead 352 to firmly fix the first lead 352 to the protrusion 416. can do.

As described above, the present invention is a structure for inserting and fixing the first lead 352 drawn out at the ends of the plurality of lamps 350 into the first hole 363 formed in the first substrate 360. By reducing the number of wires and connectors that were connected by soldering, the material cost, assembly process (soldering) and assembly time can be reduced.

In addition, the present invention is a structure for fixing the first lead 352 passing through the first hole 363 of the first substrate 360 using the first accommodating part 410 and the first cap 420, By removing the lamp holder, which is conventionally provided for fixing the lamp 350, the material cost, assembly process, and assembly time may be reduced.

In addition, the present invention has a simple fastening structure between the lamp 350 and the first substrate 360, there is an advantage in that the lamp 350 is easily removable in the case of failure.

Although two embodiments are described in the above description, the lamp 350 is disposed in the first and fourth holes 363 and 366 of the first and second substrates 360 and 361, which is a technical spirit of the present invention. The first and second leads 352 and 353 of the first and second leads 352 and 353 having passed through the first and fourth holes 363 and 366. More embodiments may exist for structures that are secured using the payment parts 410, 411 and the first and second caps 420, 421. Therefore, although not described above, any technology falling within the scope of the technical idea of the present invention may be regarded as the technical idea of the present invention.

The present invention provides an element connector for electrically connecting circuit elements to a substrate without soldering with lead, thereby preventing environmental pollution caused by soldering and improving assembly performance.

In addition, the present invention has a simple fastening structure of the substrate and the circuit device, there is an effect that the easy removal in the case of failure of the substrate or the circuit device.

The present invention has a structure in which the lead drawn from the lamp is inserted into the hole formed in the substrate to be fixed, thereby reducing the material cost, the assembly process and the assembly time.

In addition, the present invention is a structure for fixing the lead of the lamp passing through the hole of the substrate using the housing and the cap, there is an effect that can reduce the material cost, assembly process and assembly time.

In addition, the present invention has the effect of improving the yield of the liquid crystal display device by applying a simple fastening structure of the lamp and the substrate to reduce the material cost, assembly process and assembly time.

In addition, the present invention by applying a simple fastening structure of the lamp and the substrate, there is an effect that the easy detachment of the lamp failure.

Those skilled in the art through the above description will be capable of various changes and modifications without departing from the spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

Claims (11)

An accommodating part installed on one surface of the substrate and accommodating a lead drawn from the circuit element on the other side of the substrate; A contact for electrically connecting the lead accommodated in the accommodating part with a wiring on one surface of the substrate; And And a fixing member configured to fix the accommodation portion to one surface of the substrate. The method of claim 1, And a cap installed to surround an outer surface of the accommodating part to prevent a flow of the lead accommodated in the accommodating part. The method of claim 1, And the fixing member has at least two catching portions extending from the accommodating portion to the other surface of the substrate through the substrate. The method of claim 3, wherein And the at least two locking portions are integrally formed with the accommodating portion. The method of claim 1, And the housing part has a guide groove in which the lead is accommodated. The method of claim 5, wherein And the contact is formed on one surface of the accommodating part corresponding to the substrate and an inner wall surface of the guide groove contacting the lead. The method of claim 1, The material of the housing portion is a device connector, characterized in that made of any one of rubber, plastic and metal having a predetermined elasticity. The method of claim 2, The cap is an element connector, characterized in that made of any one of a strong plastic and metal so as to transmit a predetermined pressure to the outer surface of the housing. The method of claim 1, The accommodating connector may include first and second body parts facing each other and having guide grooves for guiding the leads. The method of claim 9, And a cap for applying pressure to an outer surface of the first and second body parts such that the first and second body parts are joined in a facing state. A plurality of lamps including leads drawn to both sides; A plurality of substrates formed with conductive patterns to which driving signals are applied to the lamps; And A contact portion provided on one surface of the substrate to receive the lead drawn out from the lamp on the other side of the substrate, and a contact electrically connecting the lead stored in the accommodation portion to the wiring on one surface of the substrate; And a plurality of connectors including a fixing member for fixing a portion to one surface of the substrate.

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