KR102034058B1 - Display device - Google Patents

Display device Download PDF

Info

Publication number
KR102034058B1
KR102034058B1 KR1020130065172A KR20130065172A KR102034058B1 KR 102034058 B1 KR102034058 B1 KR 102034058B1 KR 1020130065172 A KR1020130065172 A KR 1020130065172A KR 20130065172 A KR20130065172 A KR 20130065172A KR 102034058 B1 KR102034058 B1 KR 102034058B1
Authority
KR
South Korea
Prior art keywords
circuit board
printed circuit
cable
source printed
pcb
Prior art date
Application number
KR1020130065172A
Other languages
Korean (ko)
Other versions
KR20140143538A (en
Inventor
박연홍
이상대
양지석
Original Assignee
엘지디스플레이 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 엘지디스플레이 주식회사 filed Critical 엘지디스플레이 주식회사
Priority to KR1020130065172A priority Critical patent/KR102034058B1/en
Publication of KR20140143538A publication Critical patent/KR20140143538A/en
Application granted granted Critical
Publication of KR102034058B1 publication Critical patent/KR102034058B1/en

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1345—Conductors connecting electrodes to cell terminals
    • G02F1/13452—Conductors connecting driver circuitry and terminals of panels
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/14—Structural association of two or more printed circuits
    • H05K1/147—Structural association of two or more printed circuits at least one of the printed circuits being bent or folded, e.g. by using a flexible printed circuit
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/05—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 multimode

Abstract

The present invention relates to a display device, which is advantageous for thinning and can simplify a manufacturing process, comprising: a bottom cover accommodating a liquid crystal panel therein; A source printed circuit board including a plurality of signal lines for transmitting various signals for driving the liquid crystal panel and positioned outside the bottom cover; A nut formed between the source printed circuit board and an outer surface of the bottom cover; A bolt fastened to the bottom cover by penetrating a portion of the source printed circuit board corresponding to where the nut is formed; A control printed circuit board having a timing controller configured to output the various signals; A cable electrically connected to the control printed circuit board for transmitting signals from the timing controller; A bidirectional connector electrically connecting the cable and the source printed circuit board; And, the connection portion of the source printed circuit board is inserted into the bidirectional connector so that a portion of the bidirectional connector is located between the source printed circuit board and the outer surface of the bottom cover.

Figure R1020130065172

Description

Display {DISPLAY DEVICE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device, and more particularly, to a display device that is advantageous for thinning and can simplify a manufacturing process.

Conventional liquid crystal display devices display an image by adjusting the light transmittance of the liquid crystal using an electric field. To this end, the liquid crystal display includes a liquid crystal panel in which pixel regions are arranged in a matrix, and a driving circuit for driving the liquid crystal panel.

Among the driving circuits, the timing controller supplies various signals to the source printed circuit board, and a connector is formed on the source printed circuit board to receive the signals.

Since the connector is mounted on a source printed circuit board, generally the thickness of the connector is larger than other components, the overall thickness of the display device is limited by the thickness of the connector. That is, in the related art, there is a limit in reducing the size of the display device due to the thickness of the connector.

In addition, since a cable is conventionally used for the electrical connection between the source printed circuit board and the timing controller, the connection process between the source printed circuit board and the timing controller becomes cumbersome, and the use of the cable increases manufacturing costs. There was a problem.

  The present invention has been made to overcome the above limitations and problems, it is possible to reduce the overall thickness of the display device by utilizing the unused space generated due to the thickness of the nut, and also to reduce the source printed circuit board It is an object of the present invention to provide a display device capable of reducing an assembly process and a manufacturing cost by changing to a flexible printed circuit board and integrally configuring a mounting unit, a chip forming unit, and a connection unit on one printed circuit board.

According to an aspect of the present invention, there is provided a display device including: a bottom cover accommodating a liquid crystal panel therein; A source printed circuit board including a plurality of signal lines for transmitting various signals for driving the liquid crystal panel and positioned outside the bottom cover; A nut formed between the source printed circuit board and an outer surface of the bottom cover; A bolt fastened to the bottom cover by penetrating a portion of the source printed circuit board corresponding to where the nut is formed; A control printed circuit board having a timing controller configured to output the various signals; A cable electrically connected to the control printed circuit board for transmitting signals from the timing controller; A bidirectional connector electrically connecting the cable and the source printed circuit board; And, the connection portion of the source printed circuit board is inserted into the bidirectional connector so that a portion of the bidirectional connector is located between the source printed circuit board and the outer surface of the bottom cover.

The bidirectional connector includes: a housing having a cable insertion groove into which the cable is inserted and a PCB insertion groove into which the source printed circuit board is inserted; It is formed inside the housing so as to be located between the cable insertion groove and the PCB insertion groove, and electrically connecting the connection portion of the cable inserted into the cable insertion groove and the connection portion of the source printed circuit board inserted into the PCB insertion groove. Connection; An actuator inserted into a free space between the cable and the inner bottom surface of the housing to fix the cable to the housing; And cover shells coupled to the housing to prevent the actuator from falling out from the free space and to prevent the source printed circuit board from falling out from the PCB insertion groove.

The connection part may include: a plurality of cable connection pins in one-to-one contact with a plurality of cable terminals formed at the connection part of the cable; And a plurality of PCB connection pins in one-to-one contact with a plurality of PCB terminals formed at the connection portion of the source printed circuit board; The cable connection pins and the PCB connection pins corresponding to each other are connected to each other.

A connecting portion of the cable is located between the cable connecting pins and an actuator; The connection part of the source printed circuit board is located between the PCB connection pins and the bottom surface of the housing.

A bottom portion including the bottom surface of the housing is located between the source printed circuit board and the outer surface of the bottom cover.

Each cable connection pin, the support portion is connected to one side of the pin connecting portion; A contact portion having an inclined surface extending from the end of the support in the direction of the cable insertion groove and gradually lowering along the direction; An end of the contact portion is inclined in a direction opposite to the inclined surface.

Each PCB connection pin, one side of the support portion connected to the pin connection portion; A contact portion having an inclined surface extending in the direction of the PCB insertion groove from the end of the support portion and gradually lowering along the direction; An end of the contact portion is inclined in a direction opposite to the inclined surface.

The cover shells are composed of first and second cover shells formed at both edges of an upper surface of the housing; The first cover shell may include: a first body part coupled to a coupling groove formed at a left edge of an upper surface of the housing; A first fixing part bent from one edge of the first body part to face a rear left edge of the actuator; And a second fixing part extending from the other edge of the first body part in the direction of the PCB insertion groove and having a first fixing protrusion formed at an end thereof.

The second cover shell may include: a second body part coupled to a coupling groove formed at a right edge of the upper surface of the housing; a third fixing part bent from one edge of the second body part to face a rear right edge of the actuator; A fourth fixing part extending in the direction of the PCB insertion groove from the other edge of the second body part and having a second fixing protrusion at an end thereof; The first fixing protrusion and the second fixing protrusion is characterized in that protrude toward each other.

Fixing grooves are formed at both edges of the connection portion of the source printed circuit board; When the source printed circuit board is inserted into the PCB insertion groove, it is characterized in that the first fixing projection and the second fixing projection is inserted into the corresponding fixing groove.

The first and second fixing protrusions are characterized in that they have elasticity.

And an insulating member formed on an opposite surface between the bottom surface of the bidirectional connector and the bottom cover.

The insulating member is attached to a lower surface of the bidirectional connector.

The cable is integrally formed with the bidirectional connector, and the source printed circuit board is detachable from the bidirectional connector.

In addition, another display device according to the present invention for achieving the above object is a control printed circuit board with a built-in timing controller; A connector formed on the control printed circuit board to transmit a signal from the timing controller to the outside; And a flexible printed circuit board including a mounting portion on which a plurality of signal transmission lines and various circuit components are mounted, a chip forming portion on which driving chips are formed, and a connection portion connected to a connector of the control printed circuit board. It is characterized by.

The fusible printed circuit board has a structure in which a plurality of layers are stacked; The number of layers formed in the mounting unit, the number of layers formed in the chip forming unit, and the number of layers formed in the connection unit are all the same.

The fusible printed circuit board has a structure in which a plurality of layers are stacked; And, the number of layers formed in the connection portion is characterized in that less than the number of layers formed in the mounting portion.

The chip forming portion is characterized in that the protruding form from the mounting portion.

The display device according to the present invention has the following effects.

First, it is possible to reduce the overall thickness of the display device by lowering the thickness of the connector by arranging a part of the connector in the unused space generated due to the thickness of the nut.

Second, the source printed circuit board is changed to a flexible printed circuit board and the mounting unit, the chip forming unit, and the connecting unit are integrally formed on the single printed circuit board, thereby eliminating the need for a conventional COF process and a cable connection process. Thereby, the assembly process and manufacturing cost can be reduced.

1 is a view showing a part of a display device value according to a first embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1; FIG.
3 is a perspective view of the bidirectional connector and peripheral components thereof when viewed in the direction of the arrow shown in FIG. 2;
4 is a cross-sectional view taken along line I-I` of FIG.
5 is a view illustrating a state in which the bidirectional connector of FIG. 3 is separated from a source printed circuit board.
6 to 8 are views for explaining the coupling process between the bidirectional connector and the cable
9 illustrates a portion of a display device according to a second exemplary embodiment of the present invention.
10 is a cross-sectional view of the first embodiment taken along line II-II ′ of FIG. 9;
FIG. 11 is a sectional view of a second embodiment along lines II-II 'of FIG.
12 illustrates a portion of a display device according to a third exemplary embodiment of the present invention.

1 is a view showing a portion of a display device value according to a first embodiment of the present invention, and FIG. 2 is an enlarged view of a portion of FIG. FIG. 2 is a diagram when the FIG. 1 is flipped so that the bidirectional connector of FIG. 1 is seen correctly. That is, the result of symmetrically shifting FIG. 1 with respect to the X axis in the state of FIG.

1 and 2, the display device according to an exemplary embodiment of the present invention includes a liquid crystal panel 100, a bottom cover 112, a guide panel 105, a source printed circuit board (S-PCB), It includes a bidirectional connector (B-CNT), a cable (CAB), a unidirectional connector (S-CNT) and a control printed circuit board (C-PCB).

The liquid crystal panel 100 is for displaying an image, which includes two substrates facing each other, and a liquid crystal layer formed between the substrates.

The bottom cover 112 accommodates the liquid crystal panel 100 described above. On the other hand, although not shown in the figure, the bottom cover 112 further includes a backlight unit for providing light to the liquid crystal panel 100 and optical sheets for diffusing and condensing light from the backlight unit.

The guide panel 105 is to fix the liquid crystal panel 100 to the bottom cover 112. The guide panel 105 is formed in a rectangular frame shape surrounding the edge of the liquid crystal panel 100. At this time, the display unit of the liquid crystal panel 100 is exposed to the outside without being covered by the guide panel 105.

The source printed circuit board (S-PCB) is connected to the liquid crystal panel 100 through a tape carrier package (TCP) 188. The TCP 188 includes various driving signals, control signals, and images through the liquid crystal panel 100. A drive integrated circuit 191 for transmitting a data signal is mounted. The drive integrated circuit 191 may be a gate drive integrated circuit 191 or a data drive integrated circuit 191, or may be an integrated drive integrated circuit 191 capable of performing both functions. have.

Meanwhile, the drive integrated circuit 191 may be connected to the source printed circuit board S-PCB in a chip on film (COF) method instead of the TCP 188.

The source printed circuit board S-PCB is provided with signal lines (not shown) for transmitting the above-described signals (various drive signals, control signals, and image data signals). These signals are provided from the timing controller 135, and the source printed circuit board S-PCB is electrically connected to the timing controller 135 through the bidirectional connector B-CNT.

As shown in FIG. 1, the timing controller 135 is formed on a control printed circuit board (C-PCB), and signals output from the timing controller 135 are controlled by the control printed circuit board (C-PCB). It is supplied to the source printed circuit board S-PCB through signal lines (not shown) and the unidirectional connector S-CNT formed in the circuit board, and the bidirectional connector B-CNT. At this time, the signals supplied to the source printed circuit board S-PCB are provided to the TCP 188 through signal lines formed on the source printed circuit board S-PCB, and the TCP 188 is the received signal. Are supplied to the drive integrated circuit 191 through signal lines (not shown) therein.

The source printed circuit board S-PCB is located at the back of the bottom cover 112. At this time, the source printed circuit board S-PCB is connected to the bottom cover by a pair of bolts 121 and nuts 120. 112). Specifically, a through hole (not shown) is formed in a portion of the source printed circuit board (S-PCB) corresponding to the place where the nut 120 is formed, and is fastened to the rear surface of the bottom cover 112 corresponding to the through hole. As the groove (not shown) is formed, the aforementioned bolt 121 is fastened to the fastening groove by passing through the hole of the through hole and the nut 120. At this time, the through hole and the hole inner wall of the nut 120 is formed with a screw groove corresponding to the screw line formed on the outer surface of the bolt (121).

The bi-directional connector (B-CNT) is for electrically connecting the cable (CAB) and the source printed circuit board (S-PCB) to each other. For this purpose, a connection 170 is formed inside the bi-directional connector (B-CNT). do. One side of the connection part 170 is connected to the connection part of the cable CAB, and the other side of the connection part 170 is connected to the connection part of the source printed circuit board S-PCB. Therefore, the signals applied to the cable CAB are transmitted to the source printed circuit board S-PCB through the connection unit 170.

At this time, as shown in Figure 1 or 2, the source printed circuit board (S-PCB) is inserted into the bi-directional connector (B-CNT), the source printed circuit board (S-PCB) and the bidirectional connector ( B-CNT) electrical connection is made. For this purpose, the bidirectional connector B-CNT surrounds the connection of the source printed circuit board S-PCB. Accordingly, a part of the bidirectional connector B-CNT may be located in the space 111 between the source printed circuit board S-PCB and the bottom cover 112. That is, the space is generated due to the thickness of the nut 120, and the thickness of the display device may be reduced by utilizing the unused space.

That is, by placing a portion of the bidirectional connector B-CNT (for example, the lower portion of the bidirectional connector B-CNT as shown in FIG. 2) in this space, An effect of reducing the thickness is generated, thereby reducing the overall thickness of the display device.

Herein, the structure of the bidirectional connector B-CNT will be described in detail with reference to FIGS. 3 to 5.

FIG. 3 is a perspective view of the bidirectional connector B-CNT and the peripheral components when the bidirectional connector B-CNT of FIG. 2 is viewed in the direction of the arrow shown in FIG. FIG. 5 is a cross-sectional view of the ship, and FIG. 5 is a diagram illustrating a state in which the bidirectional connector B-CNT in FIG. 3 is separated from the source printed circuit board S-PCB.

The bi-directional connector B-CNT includes a housing 333, a connection 170, an actuator 466 of FIG. 4, and cover shells 301, 302, as shown in FIGS. 3 and 4.

The housing 333 is a frame forming the external shape of the bidirectional connector (B-CNT) and a structure therein. The housing 333 has a cable insertion groove 401 into which a cable CAB is inserted, and a source printed circuit. The PCB insertion groove 402 into which the substrate S-PCB is inserted is formed. The housing 333 may be formed of a plastic material.

The connection part 170 is formed in the housing 333 to be positioned between the cable insertion groove 401 and the PCB insertion groove 402. The connection part 170 electrically connects the connection part of the cable CAB inserted into the cable insertion groove 401 and the connection part of the source printed circuit board S-PCB inserted into the PCB insertion groove 402.

To this end, the connecting portion 170, as shown in Figure 4, a plurality of cable connecting pins 431 in one-to-one contact with a plurality of cable terminals 680 formed in the connection of the cable (CAB), and It includes a plurality of PCB connecting pins 432 in one-to-one contact with the plurality of PCB terminals 580 formed in the connection of the source printed circuit board (S-PCB), wherein the cable connecting pins 431 and PCB connection pins 432 are connected to each other. For example, the cable connection pins 431 and the PCB connection pins 432 corresponding to each other are connected to one through the pin connection portion 477. The pin connecting portion 477 is provided as many as the number of cable connecting pins 431 (or PCB connecting pins 432), each of these pin connecting portions 477 are electrically separated from each other.

As shown in FIG. 4, one cable connecting pin 431 has a first support part 411 connected to a pin connection part 477 on one side thereof, and a cable insertion groove from an end of the first support part 411. And a first contact portion 412 having an inclined surface (hereinafter, referred to as a first inclined surface) extending in the direction 401 and gradually lowering along the direction. Here, the end of the first contact portion 412 is inclined in a direction opposite to the above-described first inclined surface. The reason is that the inserted cable CAB can be guided to the correct position. On the other hand, the first support 411 described above also serves to prevent the inserted cable (CAB) from moving further.

The connection portion of the cable CAB inserted into the cable insertion groove 401 is placed in the actuator 466. Thus, the connecting portion of the cable CAB is located between the first contact portion 412 and the actuator 466. At this time, the first contact portion 412 is in physical contact with the cable terminal 680 formed at the connection portion. Here, the cable terminals 680 are electrically connected to signal lines formed on the cable CAB.

As shown in FIG. 4, one PCB connection pin 432 has a second support part 421 connected at one side thereof to the pin connection part 477, and a PCB insertion groove from an end of the second support part 421. And a second contact portion 422 having an inclined surface (hereinafter referred to as a second inclined surface) extending in the direction of 402 and gradually lowering along the direction. Here, the end of the second contact portion 422 is inclined in the direction opposite to the above-described second inclined surface. The reason is that the inserted source printed circuit board (S-PCB) can be guided to the correct position. On the other hand, the second support 421 described above also serves to prevent the inserted source printed circuit board (S-PCB) from moving further.

The connection portion of the source printed circuit board S-PCB inserted into the PCB insertion groove 402 is placed on the pin connecting portion 477, that is, the seating portion 472 of the pin connecting portion 477. Therefore, the connection portion of the source printed circuit board S-PCB is positioned between the second contact portion 422 and the seating portion 472. At this time, the second contact portion 422 is in physical contact with the PCB terminal 580 formed at the connection portion. Here, the PCB terminals 580 are electrically connected to signal lines formed on the source printed circuit board S-PCB.

An actuator 466 is inserted into a part of the space of the cable insertion groove 401, that is, a clearance between the cable CAB and the inner bottom surface of the housing 333. As the actuator 466 is fitted into the free space, the cable CAB can be firmly fixed to the housing 333. As shown in Fig. 4, the actuator 466 has a form in which the cross section of the actuator 466 is turned over.

On the other hand, when the actuator 466 is inserted into the free space, as shown in FIG. 4, the insertion degree is increased by the first protrusion 481 protruding upward from the bottom surface of the inside of the housing 333. Controlled. That is, the first protrusion 481 is located close to the cable insertion groove 401, and the first protrusion 481 has a function of inhibiting its advancement when the actuator 466 is inserted into the free space. do.

Meanwhile, in addition to the first protrusion 481, the second to fourth protrusions 482, 463, and 464 are further formed inside the housing 333.

The second protrusion 482 protrudes upward from the bottom of the inner surface of the housing 333 near the PCB insertion groove 402. The space provided by the second protrusion 482 and the first protrusion 481 described above. A part of the pin connection part 477 is put in (the space between the 1st protrusion 481 and the 2nd protrusion 482; hereafter a seating space). That is, as shown in FIG. 4, the pin connecting portion 477 includes a seating portion 472 positioned in the seating space, and a pillar portion 471 protruding from the seating portion 472. Here, the pillar portion 471 is inserted into a space provided by the third protrusion 463 and the fourth protrusion 464 (the space between the third protrusion 463 and the fourth protrusion 464). Here, the third and fourth protrusions 464 protrude downward from the center upper surface of the inside of the housing 333.

Here, the seating portion 472, the pillar portion 471, the cable connecting pin 431 and the PCB connecting pin 432 described above may be integrally manufactured by using the same material as one material.

3 and 5, the cover shells 301 and 302 prevent the actuator 466 from falling out of the free space and the source printed circuit board S- from the PCB insertion groove 402. PCB) is coupled to the housing 333 to prevent it from falling out.

Specifically, the cover shells 301 and 302 are composed of first and second cover shells 301 and 302 formed at both edges of the upper surface of the housing 333.

As shown in FIG. 3 or FIG. 5, the first cover shell 301 has a first body portion 351 coupled to a first coupling groove formed at the left edge of the upper surface of the housing 333, and the first cover shell 301 is provided. The first insertion portion 391 is bent from one edge of the body portion 351 to face the rear left edge of the actuator 466, and the PCB insertion groove 402 from the other edge of the first body portion 351. And a second fixing part 392 extending in the direction, where a first fixing protrusion 341 is formed at the end of the second fixing part 392.

As shown in FIG. 3 or FIG. 5, the second cover shell 302 has a second body portion 352 coupled to a second coupling groove formed at the right edge of the upper surface of the housing 333, and the second cover shell 302 is connected to the second cover shell 302. The PCB fixing groove 402 is bent from one edge of the body portion 352 to face the rear right edge of the actuator 466, and from the other edge of the second body portion 352. And a fourth fixing part 394 extending in the direction, where a second fixing protrusion 342 is formed at the end of the fourth fixing part 394.

The first fixing protrusion 341 and the second fixing protrusion 342 protrude toward each other. As shown in FIG. 5, the first fixing protrusion 341 is formed of a source printed circuit board S-PCB. The first fixing groove 541 is inserted into the first fixing groove 541, and the second fixing protrusion 342 is inserted into the second fixing groove 542 of the source printed circuit board S-PCB. Here, the first fixing protrusion 341 and the second fixing protrusion 342 are formed at the connection portion of the source printed circuit board S-PCB. Specifically, the first fixing protrusion 341 is formed at the left edge of the connection portion. And a second fixing protrusion 342 is formed at the right edge of the connection portion.

The first fixing protrusion 341 and the second fixing protrusion 342 are formed of a material having elasticity, so that the coupling between the bidirectional connector (B-CNT) and the source printed circuit board (S-PCB) is firm. In addition, the attachment and detachment between them becomes easy.

On the other hand, the display device according to the present invention, as shown in Figure 4, may further include an insulating member 444 formed on the opposite surface between the bottom surface of the bi-directional connector (B-CNT) and the bottom cover 112. have. In this case, the insulating member 444 may be attached to the lower surface of the directional connector, that is, the outer lower surface of the housing 333. The insulating member 444 prevents electrical contact between the bidirectional connector B-CNT and the bottom cover 112.

6 to 8, the coupling process between the bidirectional connector B-CNT and the cable CAB will be described below.

6 to 8 are views for explaining the coupling process between the bi-directional connector (B-CNT) and the cable (CAB).

First, as shown in FIG. 6, the bidirectional connector B-CNT having the cover shells and the actuator 466 separated is prepared. Then, the cable CAB is connected to this bidirectional connector B-CNT. That is, the cable CAB of the cable CAB and the bidirectional connector B-CNT are electrically connected to each other by pushing the connection portion of the cable CAB into the cable insertion groove 401 of the bidirectional connector B-CNT. Connect with

Next, prepare a bi-directional connector (B-CNT) to which the cable (CAB) is connected, and as shown in FIG. ) And the bi-directional connector (B-CNT) firmly.

Next, as shown in FIG. 8, the first and second cover shells 301 and 302 are coupled to the bidirectional connector B-CNT into which the actuator 466 is inserted. That is, the first cover shell 301 is pressed into the first coupling groove 651 of the bidirectional connector B-CNT, and the second cover shell 302 is the second coupling of the bidirectional connector B-CNT. Press into groove 652. Then, the first body portion 351 of the first cover shell 301 is coupled to the first coupling groove 651 while the first fixing portion 391 of the first cover shell 301 is the actuator 466. Contact the rear left edge of the second cover shell 302, and the second body portion 352 of the second cover shell 302 is coupled to the second coupling groove 652, and the third fixing portion of the second cover shell 302 ( 393 comes into contact with the rear right edge of actuator 466.

In this way, the coupling between the cable CAB and the bidirectional connector B-CNT is completed.

In the present invention, this cable (CAB) and the bi-directional connector (B-CNT) can form a configuration in a state coupled to each other. For example, the cover shells 301 and 302 may be completely fixed to the bidirectional connector B-CNT by using an adhesive or the like to form a structure in which the cable CAB and the bidirectional connector B-CNT are integrated. . In other words, a structure in which the cable CAB is fixed to the bidirectional connector B-CNT and is not detached is possible.

On the other hand, the source printed circuit board (S-PCB) in the present invention is removable from the bi-directional connector (B-CNT). This is possible by using the first and second fixing protrusions 341 and 342 having elasticity as described above.

9 illustrates a portion of a display device according to a second exemplary embodiment of the present invention.

The display device according to the second exemplary embodiment of the present invention includes a control printed circuit board (C-PCB) and a flexible printed circuit board 900 as shown in FIG. 9.

A timing controller 135 is mounted on the control printed circuit board (C-PCB), and the control printed circuit board (C-PCB) and the timing controller 135 are the same as those of the first embodiment described above. The description refers to the contents of the first embodiment.

The flexible printed circuit board 900 includes a mounting unit 912 on which a plurality of signal lines and various circuit components are mounted, a chip forming unit 913 on which drive integrated circuits 191 are formed, and a control printed circuit. It consists of the connection part 911 connected to the unidirectional connector S-CNT of the board | substrate C-PCB.

That is, according to the second embodiment of the present invention, the mounting portion 912, the chip forming portion 913, and the connecting portion 911 are all integrally formed on one flexible printed circuit board 900. This eliminates the need for a separate cable CAB for connecting the source printed circuit board (ie, the mounting portion 912) to the unidirectional connector S-CNT. That is, the connection part 911 integrally formed with the source printed circuit board replaces the role of the cable CAB.

The flexible printed circuit board 900 is a substrate made of a flexible PCB (FPCB) material having a property that can be easily bent. At this time, the substrate of the FPCB material may be made of a polyimide (Polyimide) of the base thereof.

In addition, the flexible printed circuit board 900 according to the present invention has a structure in which a plurality of layers are stacked, and may have different numbers of layers for each region. This will be described with reference to FIG. 10.

FIG. 10 is a cross-sectional view of the first embodiment taken along line II ˜ II ′ of FIG. 9.

The flexible printed circuit board 900 according to the embodiment of the present invention may include, for example, first to sixth metal layers L1 to L6 and first to third bonding sheets as illustrated in FIG. 10. bonding sheet layers BS1 to BS3, first and second photo silk resist layers PSR1 and PSR2, and a coverlay layer CL.

Each of the first to sixth metal layers L1 to L6 is formed of a copper foil, and various signal lines are formed on the metal layers L1 to L6. That is, signal lines can be formed by patterning the metal layer. In this case, polyimide may be further formed as a base film on each of the metal layers L1 to L6.

Each of the first to third bonding sheets BS1 to BS3 is an adhesive layer for attaching adjacent layers to each other, as shown in FIG. 10, between the first metal layer L1 and the second metal layer L2, and It is formed between the third metal layer L3 and the coverlay layer CL, and between the fifth metal layer L5 and the sixth metal layer L6, respectively.

The coverlay layer CL is a protective film for protecting the exposed metal layer, that is, the fourth metal layer L4, which is formed of an insulating material.

Each of the first and second photosilk resist layers PSR1 and PSR2 may be disposed on the first metal layer L1 disposed at the uppermost layer and the sixth metal layer L6 disposed at the lowermost layer to prevent a short circuit between signal lines formed on the metal layer. Is formed. The photosilk resist layers PSR1 and PSR2 may be entirely coated on the metal layer in the form of an ink.

In this case, as shown in FIG. 10, the number of layers configured in the mounting unit 912 and the number of layers configured in the connection unit 911 may be configured differently. For example, a structure in which a total of 12 layers described above are stacked may be applied to the mounting unit 912, and a structure in which only two layers of the 12 layers are stacked may be applied to the connection unit 911. That is, as shown in FIG. 10, only the coverlay layer CL and the fourth metal layer L4 may be formed in the connection portion 911. Meanwhile, the chip forming unit 913 may also have the same stacked structure as the mounting unit 912.

The mounting part 912 and the chip forming part 913 are formed with a greater number of circuit components and signal lines than the connection part 911. Therefore, as described above, the mounting part 912 and the chip forming part 913 are formed. While a relatively large number of layers are stacked in the connection portion 911, a relatively small number of layers are stacked.

Since the connection part 911 simply serves to connect signal lines extending from the mounting part 912 to the unidirectional connector S-CNT in the control printed circuit board C-PCB, the connection part 911 is shown in FIG. 10. As shown, only one metal layer (i.e., the fourth metal layer) can sufficiently fulfill its role. On the other hand, the terminal is formed in the fourth metal layer (L4) corresponding to the end of the connection portion 911 for this role, these terminals are electrically connected to the unidirectional connector (S-CNT).

On the other hand, the flexible printed circuit board 900 according to the embodiment of the present invention may have a configuration as shown in FIG.

FIG. 11 is a cross-sectional view of the second exemplary embodiment taken along line II-II ′ of FIG. 9.

The flexible printed circuit board 900 according to the embodiment of the present invention may include, for example, first to sixth metal layers L1 to L6 and first to third bonding sheet layers, as illustrated in FIG. 11. And BS1 to BS3, and first and second coverlay layers CL1 and CL2.

Meanwhile, as illustrated in FIG. 11, the number of layers configured in the mounting unit 912 and the number of layers configured in the connection unit 911 may be configured differently. For example, a structure in which a total of 12 layers described above are stacked may be applied to the mounting unit 912, and a structure in which only two layers of the 12 layers are stacked may be applied to the connection unit 911. That is, as shown in FIG. 11, only the first coverlay layer CL1 and the first metal layer L1 may be formed in the connection portion 911. Meanwhile, the chip forming unit 913 may also have the same stacked structure as the mounting unit 912.

In the structure as shown in FIG. 11, terminals are formed in the first metal layer L1 corresponding to the ends of the connection part 911, and the terminals are electrically connected to the unidirectional connector S-CNT.

Meanwhile, the connection part 911 may also be configured of the same number and types of layers as the mounting part 912. For example, the connection part 911 also includes first to sixth metal layers L1 to L6, first to third bonding sheet layers BS1 to BS3, and first and second photosilk resist layers. (PSR1, PSR2) and the coverlay layer CL. In such a case, some circuit parts in the mounting part 912 may be moved to the connection part 911 and mounted therein, thereby sufficiently securing the clearance distance between the circuit parts. This minimizes electrical interference between circuit components.

12 illustrates a portion of a display device according to a third exemplary embodiment of the present invention.

As shown in FIG. 12, the display device according to the third embodiment of the present invention includes a control printed circuit board (C-PCB) and a flexible printed circuit board 900.

The control printed circuit board (C-PCB) and the flexible printed circuit board 900 according to the third embodiment of the present invention are the same as those in the above-described second embodiment (Figs. 9 to 11). The descriptions refer to the contents described in the second embodiment above.

On the other hand, the flexible printed circuit board 900 according to the third embodiment of the present invention may have a layer structure shown in FIG. 10 or 11 described above.

However, the structure according to the third embodiment of the present invention and the structure according to the second embodiment have the following differences. That is, according to the structure of the second embodiment, the chip forming portion 913 protrudes from the mounting portion 912. According to the structure of the third embodiment, the chip forming portion 913 is formed by the mounting portion 912. Completely surrounded.

Meanwhile, according to FIGS. 9 and 12, the mounting unit 912, the chip forming unit 913, and the connection unit 911 are integrally formed in one flexible printed circuit board 900, where the chip forming unit 913 is formed. ) And the mounting portion 912 may not be integrated, and instead, the chip forming portion 913 and the mounting portion 912 may be connected to each other by a COF method (COF bonding method). In this case, any one of a solder, an epoxy, and a polyimide may be used to bond the chip forming portion 913 and the mounting portion 912.

On the other hand, the source printed circuit board according to the present invention can be used not only in the liquid crystal display device but also in various display devices, for example, a plasma display device and a light emitting diode display device.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and it is common in the art that various substitutions, modifications, and changes can be made without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

100: liquid crystal panel 112: bottom cover
105: guide panel 188: TCP
191: drive integrated circuit 120: nut
121: bolt 111: between
S-PCB: Source Printed Circuit Board 170: Connection
B-CNT: bidirectional connector 444: insulation member
CAB: Cable S-CNT: Unidirectional Connector
135: timing controller C-PCB: control printed circuit board

Claims (18)

A bottom cover to accommodate the liquid crystal panel inside;
A source printed circuit board including a plurality of signal lines for transmitting various signals for driving the liquid crystal panel and positioned outside the bottom cover;
A nut formed between the source printed circuit board and an outer surface of the bottom cover;
A bolt fastened to the bottom cover by penetrating a portion of the source printed circuit board corresponding to where the nut is formed;
A control printed circuit board having a timing controller configured to output the various signals;
A cable electrically connected to the control printed circuit board for transmitting signals from the timing controller;
A bidirectional connector electrically connecting the cable and the source printed circuit board; And,
The connection portion of the source printed circuit board is inserted into the bidirectional connector so that a portion of the bidirectional connector is located between the source printed circuit board and the outer surface of the bottom cover.
And the surface of the bidirectional connector facing the bottom cover is closer to the bottom cover than the surface of the source printed circuit board facing the bottom cover. The method of claim 1,
The bidirectional connector,
A housing having a cable insertion groove into which the cable is inserted and a PCB insertion groove into which the source printed circuit board is inserted;
It is formed inside the housing so as to be located between the cable insertion groove and the PCB insertion groove, and electrically connecting the connection portion of the cable inserted into the cable insertion groove and the connection portion of the source printed circuit board inserted into the PCB insertion groove. Connection;
An actuator inserted into a free space between the cable and the inner bottom surface of the housing to fix the cable to the housing; And,
And cover shells coupled to the housing to prevent the actuator from falling out from the free space and to prevent the source printed circuit board from falling out from the PCB insertion groove. The method of claim 2,
The connecting portion,
A plurality of cable connecting pins in one-to-one contact with a plurality of cable terminals formed at the connection portion of the cable; And,
A plurality of PCB connecting pins in one-to-one contact with a plurality of PCB terminals formed at a connection portion of the source printed circuit board;
A display device, characterized in that the cable connecting pin and the PCB connecting pins corresponding to each other are connected to each other. The method of claim 3, wherein
A connecting portion of the cable is located between the cable connecting pins and an actuator; And,
And the connection portion of the source printed circuit board is positioned between the PCB connection pins and the bottom surface of the housing. The method of claim 4, wherein
And a bottom portion including a bottom surface of the housing is located between the source printed circuit board and an outer surface of the bottom cover. The method of claim 3, wherein
Each cable connecting pin is
A support part of which one side is connected to the pin connection part;
A contact portion having an inclined surface extending from the end of the support in the direction of the cable insertion groove and gradually lowering along the direction;
And the end portion of the contact portion is inclined in a direction opposite to the inclined surface. The method of claim 3, wherein
Each PCB connection pin is
A support part of which one side is connected to the pin connection part;
A contact portion having an inclined surface extending in the direction of the PCB insertion groove from the end of the support portion and gradually lowering along the direction;
And the end portion of the contact portion is inclined in a direction opposite to the inclined surface. The method of claim 2,
The cover shells are composed of first and second cover shells formed at both edges of an upper surface of the housing;
The first cover shell,
A first body coupled to a coupling groove formed at a left edge of the upper surface of the housing;
A first fixing part bent from one edge of the first body part to face a rear left edge of the actuator;
And a second fixing part extending from the other edge of the first body in the direction of the PCB insertion groove and having a first fixing protrusion at an end thereof. The method of claim 8,
The second cover shell,
A second body part coupled to a coupling groove formed at a right edge of an upper surface of the housing;
A third fixing part bent from one edge of the second body part to face a rear right edge of the actuator;
A fourth fixing part extending in the direction of the PCB insertion groove from the other edge of the second body part and having a second fixing protrusion at an end thereof;
And the first fixing protrusion and the second fixing protrusion protrude toward each other. The method of claim 9,
Fixing grooves are formed at both edges of the connection portion of the source printed circuit board;
And when the source printed circuit board is inserted into the PCB insertion groove, the first fixing protrusion and the second fixing protrusion are inserted into the corresponding fixing groove. The method of claim 9,
And the first and second fixing protrusions have elasticity. The method of claim 1,
And an insulating member formed on an opposite surface between the bottom surface of the bidirectional connector and the bottom cover. The method of claim 12,
And the insulating member is attached to a lower surface of the bidirectional connector. The method of claim 1,
And the cable is integrally formed with the bidirectional connector, and the source printed circuit board is detachable from the bidirectional connector. delete delete delete delete
KR1020130065172A 2013-06-07 2013-06-07 Display device KR102034058B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020130065172A KR102034058B1 (en) 2013-06-07 2013-06-07 Display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020130065172A KR102034058B1 (en) 2013-06-07 2013-06-07 Display device

Publications (2)

Publication Number Publication Date
KR20140143538A KR20140143538A (en) 2014-12-17
KR102034058B1 true KR102034058B1 (en) 2019-10-18

Family

ID=52674262

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020130065172A KR102034058B1 (en) 2013-06-07 2013-06-07 Display device

Country Status (1)

Country Link
KR (1) KR102034058B1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102489588B1 (en) * 2015-12-01 2023-01-17 엘지디스플레이 주식회사 Liquid Crystal Display Device
KR102461989B1 (en) * 2015-12-31 2022-11-01 엘지디스플레이 주식회사 Display apparatus
CN109061962B (en) * 2018-10-26 2021-06-18 上海中航光电子有限公司 Display panel, manufacturing method thereof and display device
KR102615050B1 (en) * 2019-01-16 2023-12-19 삼성전자주식회사 Display apparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100962652B1 (en) * 2003-02-11 2010-06-11 삼성전자주식회사 Driving module connector and liquid crystal display having the same
CN100385456C (en) * 2003-07-07 2008-04-30 松下电器产业株式会社 PC card
KR100683739B1 (en) * 2004-12-15 2007-02-20 삼성에스디아이 주식회사 Plasma display apparatus
KR20080022683A (en) * 2006-09-07 2008-03-12 삼성전자주식회사 Connector binding assembly and liquid crystal display comprising the same
KR101860858B1 (en) * 2011-03-02 2018-05-25 삼성디스플레이 주식회사 Flexible printed circuit board assembly and flat panel display apparatus using the same

Also Published As

Publication number Publication date
KR20140143538A (en) 2014-12-17

Similar Documents

Publication Publication Date Title
CN107799003B (en) Display device and method for manufacturing the same
EP1903376B1 (en) Liquid crystal display device and portable display apparatus using the same
EP1903841B1 (en) Flexible printed circuit board
US9864446B2 (en) Touch screen-integrated display device
EP2012565A2 (en) Flexible printed circuit board and liquid crystal display device using the same
KR100786479B1 (en) Flat panel display device and portable display appratus using the same
EP2506070B1 (en) Liquid crystal display device
KR20040082988A (en) Liquid crystal display device having flexible substrates
EP2849546B1 (en) Circuit board and lighting device having the circuit board
EP2846084B1 (en) Circuit board and lighting device having the circuit board
KR102034058B1 (en) Display device
KR20150131453A (en) Display device
US9462686B2 (en) Printed circuit board
JP7271162B2 (en) Electronics
KR20170069042A (en) Flexible printed circuit board and method for manufacturing the same
JP2008078520A (en) Solder joint structure of wiring board
US20110199741A1 (en) Flexible substrate and display device provided with same
JP2008294114A (en) Flexible printed circuit board and liquid crystal display device
KR20180043494A (en) Liquid crystal display device and LED assembly
US9123265B2 (en) Planer light source device with fixing portion and display device using the same
KR101420825B1 (en) A printed circuit board and a display appartus having the same
CN110072328B (en) Flexible circuit board
US11877384B2 (en) Flexible circuit board, manufacturing method thereof and display panel
JP3653981B2 (en) Mounting structure of liquid crystal device and electronic device
EP3582209B1 (en) Image display device

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant