KR20070101981A - Display device and connector for the same - Google Patents

Abstract

A display apparatus and a connector for the same are provided to ensure tight connection among a flexible circuit board, an operation circuit board and the connector and increase the size of a contact area between a projecting part and a flexible circuit board, thereby applying stable high current and high voltage in a display panel. A display apparatus comprises the following units: a display panel(10) in which a plurality of signal lines is installed; a flexible circuit board(20), which is connected to the display panel, for distributing an operating signal to the signals; an operating circuit board for supporting an operating signal to the flexible circuit board; and a connector(40) having a main body unit in which an insertion hole into which the flexible circuit board is inserted is formed, a connection member which is supported in a supporting groove installed in a bottom part of the main body, and a cover unit which is rotatedly connected to the main body part.

Description

DISPLAY DEVICE AND CONNECTOR FOR THE SAME}

1 is a view for explaining the structure of a display device according to the present invention;

FIG. 2 is an enlarged view of region “A” of FIG. 1;

3 is a perspective view of a connector according to a first embodiment of the present invention;

4 is a cross-sectional view taken along line IV-IV of FIG. 3;

5 is a cross-sectional view taken along the line VV of FIG. 4;

6A to 6B are views for explaining a procedure for connecting a flexible circuit board to a connector according to the present invention;

7A and 7B are views for explaining a display device and a connector used therein, according to a second embodiment of the present invention;

8 is a diagram for describing a display device to which a connector according to a third exemplary embodiment of the present invention is applied.

Explanation of Signs of Major Parts of Drawings

1: OLED 10: display panel

20: flexible circuit board 21: driving voltage circuit wiring

23: common voltage circuit wiring 30: driving circuit board

33: connector 40: connector

50: main body 51: insertion hole

53: support groove 55: rotation axis

60: cover 70: connecting member

71: upper arm 73: support body

75: lower arm 77: connection end

79: protrusion

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device and a connector used therefor, and more particularly, to a display device capable of stably applying high current or high voltage to a display panel and a connector used therein.

Recently, many flat panel display devices such as a liquid crystal display (LCD), a plasma display panel (PDP), and an organic light emitting diode (OLED) have been developed in place of the CRT. These flat panel display devices have a driving circuit board for applying a driving signal to the display panel in common. The driving circuit board converts various commands received from the outside into appropriate driving signals and applies them to the display panel.

The driving signals generated from the driving circuit board are distributed to the plurality of signal lines provided on the display panel via the flexible circuit board, and the driving circuit board and the flexible circuit board are connected to each other by a connector.

Such a connector is manufactured in a structure having a plurality of metal pins corresponding to the plurality of circuit wirings in order to interconnect the plurality of circuit wirings respectively provided on the flexible circuit board and the driving circuit board. The connector having a plurality of metal pins is used as it is even when a voltage is supplied to the display panel.

However, the connector having a plurality of metal pins has a problem in that a high current or high voltage cannot be stably applied to the display panel because the area for contacting the connection wirings provided on the flexible circuit board and the driving circuit board is narrow.

An object of the present invention is to provide a display device capable of stably applying high current or high voltage to a display panel.

Another object of the present invention is to provide a connector capable of stably applying high current or high voltage to a display panel.

According to the present invention, there is provided a display panel including a plurality of signal lines; A flexible circuit board connected to the display panel to distribute driving signals to signal lines; A driving circuit board supplying a driving signal to the flexible circuit board; And a main body portion which connects the flexible circuit board and the driving circuit board, and has an insertion hole into which the flexible circuit board is inserted, a cover portion which is rotatably coupled to the main body portion, and a support groove provided on the bottom surface of the main body portion. And a connector having a connecting member, wherein the connecting member has a protrusion contacting the flexible circuit board when the cover portion is pressed toward the main body, and the protrusion extends in the transverse direction in the insertion direction of the flexible circuit board. Achieved by a display device.

Here, the connecting member is supported by the support groove and is connected to the driving circuit board and interconnect the lower arm and the upper arm and the lower arm and the upper arm positioned on the upper end of the lower protrusion is provided at the end protruding toward the cover portion It may include a connection body having a connection end.

And, the connecting member may be two or less.

In addition, the support groove may be provided with a number corresponding to the connecting member.

Here, the main body may be mounted on the driving circuit board.

In addition, the connection member may include a conductive member.

Here, the driving circuit board may be provided with a circuit wiring having a width corresponding to the length of the protrusion in the horizontal direction in the insertion direction of the flexible circuit board.

The flexible circuit board is divided into an insertion region inserted into the connector and a connection region connected to the display panel, and the circuit wiring provided in the insertion region has a width corresponding to the length of the protrusion in the horizontal direction in the insertion direction of the flexible circuit board. The circuit wiring provided in the connection region may be branched into a plurality of circuit wirings provided in the insertion region.

In addition, the number of circuit wirings provided on the driving circuit board may correspond to the protrusion.

The signal line may include a driving voltage line, the display panel may further include a common electrode, and the driving signal may include a driving voltage applied to the driving voltage line and a common voltage applied to the common electrode.

The driving signal includes a video signal for forming an image on the display panel, the signal line includes a data line and a gate line, and a plurality of metals are arranged in one line on one side of the connection member to extend in the insertion direction of the flexible circuit board. The pin may be provided, and the metal pin may transfer an image signal to the data line and the gate line and have a length smaller than the length of the protrusion.

Another object of the present invention is to provide a connector for interconnecting a flexible printed circuit board with a printed circuit board, the main body having an insertion hole into which the flexible printed circuit board is inserted, a cover part and a main body rotatably coupled to the main body. And a connector having a connection member supported by a support groove provided on the bottom of the part, wherein the connection member has a protrusion contacting the flexible circuit board when the cover portion is pressed toward the main body portion, and the protrusion has an insertion direction of the flexible circuit board. Is achieved by a connector extending transversely.

Here, the connecting member is supported by the support groove and is connected to the printed circuit board and interconnect the lower arm and the upper arm and the lower arm and the upper arm located on the upper end of the lower protrusion is provided at the end protruding toward the cover portion It may include a connection body having a connection end.

And, the connecting member may be two or less.

In addition, the support groove may be provided with a number corresponding to the connecting member.

Herein, the connection member may include a conductive member.

One side of the connection member may have a width narrower than the length of the protrusion, and a plurality of metal pins extending in the insertion direction of the flexible circuit board may be arranged in a line.

Hereinafter, other display devices and connectors used therein will be described in detail with reference to the accompanying drawings.

In the following embodiments, an OLED is used as an example of a display device, but the present invention is not limited thereto and may be applied to an LCD or a PDP. In addition, the connector described in the present invention can be applied not only to the display device, but also to electronic products such as mobile phones and digital cameras.

1 is a view for explaining the structure of a display device according to the present invention, Figure 2 is an enlarged view 'A' region of Figure 1, Figure 3 is a perspective view of a connector according to a first embodiment of the present invention, Figure 4 3 is a cross-sectional view taken along line IV-IV of FIG. 3, and FIG. 5 is a cross-sectional view taken along line VV of FIG. 4.

As shown in FIG. 1, the OLED 1 is connected to a display panel 10 having a plurality of signal lines and a flexible circuit board 20 connected to one side of the display panel 10 to distribute driving signals to each signal line. ), A connector mounted on one surface of the driving circuit board 30 and the driving circuit board 30 for supplying a driving signal to the flexible circuit board 20 and interconnecting the driving circuit board 30 and the flexible circuit board 20 to each other. And 40.

The display panel 10 is a display device in which an image is realized by emission of an organic light emitting layer. The display panel 10 according to the present invention includes an insulating substrate and various signal lines (gate lines, data lines, driving voltage lines, etc.) formed on the insulating substrate, an organic light emitting layer and an organic light emitting layer formed on the signal lines. Layer, and a protective substrate attached to the upper portion of the protective layer. The organic light emitting layer generates light using a combination of electrons and holes and is made of a low molecular or high molecular organic material. The protective layer and the protective substrate prevent external shock from being transmitted to the organic light emitting layer and protect the organic light emitting layer from moisture and air. On the other hand, the display panel 10 may be a display element used in the liquid crystal display device for forming an image using the alignment of the liquid crystal, and a display element applied to the PDP for forming an image using the plasma.

Panel drivers 15 and 20 are provided at one edge of the insulating substrate. The panel drivers 15 and 20 connect between the display panel 10 and the driving circuit board 30, and supply various driving signals transmitted from the driving circuit board 30 to the display panel 10. The panel drivers 15 and 20 have a driving chip 15 mounted at one edge of the insulating substrate in the form of a chip on glass (COG), and a flexible circuit connecting the driving chip 15 and the driving circuit board 30 to each other. It consists of the board | substrate 20.

One end of the driving chip 15 is connected to various signal lines (data lines), and the other end is connected to the flexible circuit board 20. In addition, one side of the flexible circuit board 20 that is not connected to the driving chip 15 is connected to the driving circuit board 30 through the connector 40 to be described later. The flexible circuit board 30 is divided into an insertion area b inserted into the connector 40 provided in the driving circuit board 30 and a connection area c connected to the display panel 10. First and second circuit wirings are formed on the flexible circuit board 20. The first circuit wiring (not shown) is a circuit line that transfers the image signal supplied from the driving circuit board 30 to the driving chip 15, and is arranged so that a plurality of lines having narrow line widths do not overlap each other. In the insertion region b, the spacing between the circuit lines is narrow, and the spacing between the circuit lines increases toward the connection region c. The second circuit wirings 21 and 23 are circuit wirings for transmitting the driving voltage and the common voltage supplied from the driving circuit board 30 to the driving voltage line and the common electrode, respectively, and transferring the driving voltage to the driving voltage bar 18. The driving voltage circuit wiring 21 and the common voltage circuit wiring 23 for supplying the common voltage to the common voltage bar (not shown) are included. The shape of the driving voltage circuit wiring 21 and the common voltage circuit wiring 23 is as follows. In the insertion region (b), one wiring having a predetermined width (d2) is provided, and in the connection region (c), each of the driving voltage bars 18 and the common voltage are branched into a plurality of circuit lines from the one wiring. It is connected to a bar (not shown). In the insertion region b, the width d2 of the second circuit wirings 21 and 23 is substantially equal to the length d1 of the protrusion 79 to be described later in the horizontal direction in the insertion direction of the flexible circuit board 20. It is prepared.

Meanwhile, the panel drivers 15 and 20 illustrated represent a chip on glass (COG) method, but other known methods such as a chip on glass (COF) and a tape carrier package (TCP) may be used.

The driving circuit board 30 includes a power generation unit for applying various driving signals to the display panel 10 and a circuit wiring for processing external image signals. The driving circuit board 30 receives data for realizing an image through an external cable, converts it into a driving signal, and provides the same to the display panel 10. The driving signal includes an image signal supplied to a data line to form an image on the display panel 10, and a driving voltage and a common voltage supplied to the driving voltage bar 18 and a common voltage bar (not shown), respectively. The driving circuit board 30 is provided with circuit wiring connected to the first circuit wiring of the flexible circuit board 20 through the connector 40 and circuit wiring connected to the second circuit wirings 21 and 23, respectively. The width d3 of the circuit wiring connected to the driving voltage circuit wiring 21 and the common voltage circuit wiring 23 is the length d1 of the projection 46 in the horizontal direction in the insertion direction of the flexible circuit board 20. Is substantially the same as One side of the driving circuit board 30 is provided with a connection terminal 33 that is connected to the connection terminal 77 to be described later. The driving circuit board 30 is positioned on the rear surface of the storage container accommodating the display panel 10 by bending the flexible circuit board 20.

In the region corresponding to the connection terminal 33 of the driving circuit board 30, a connector 40 connecting the driving circuit board 30 and the flexible circuit board 20 to each other is provided. The connector 40 includes a main body portion 50 provided with an insertion hole 51 into which the flexible circuit board 20 is inserted, a cover portion 60 and a main body portion 50 rotatably coupled to the main body portion 50. It includes a connection member 70 which is supported in the support groove 53 provided on the bottom surface 52 of the.

The body part 50 and the cover part 60 are made of an insulating material, and the connection member 70 is made of a conductive material. The body part 50 and the cover part 60 are coupled to each other by the rotation shaft 55. Two support grooves 53 are provided in the bottom surface 52 of the body portion 50 extending along the insertion direction of the flexible circuit board 20 from the distal insertion port 51 of the body portion 50. The support grooves 53 are spaced apart from each other by a predetermined distance, and each of the support grooves 53 has a connecting member 70 elastically deformed in the depth direction of the support groove 53.

As shown in FIG. 5, the connecting member 70 has an approximately C shape, the lower arm 75 supported by the support groove 53 and provided with a protrusion 79 protruding upward from an end facing the insertion hole 51. ), Which connects the upper arm 71 and the lower arm 75 and the upper arm 71 positioned on the upper portion of the lower arm 75 and is electrically connected to the connection terminal 33 of the driving circuit board 30. And a support body 73 having a connection end 77. The lower arm 75, the upper arm 71 and the support body 73 are provided integrally and elastically act in the vertical direction. When the cover part 60 is pressed toward the main body part 50, a part of the flexible circuit board 20 comes into contact with the protrusion 79. As a result, the flexible circuit board 20 and the driving circuit board 30 are connected to each other by the connecting member 70, and the driving signal generated by the driving circuit board 30 is transmitted to the flexible circuit board 20. The protrusions 79 extend in the horizontal direction in the flexible circuit board 20 insertion direction, and the width of the region where the protrusions 79 and the flexible circuit board 20 are in contact is transverse to the flexible circuit board 20 insertion direction. It is substantially the same as the length d1 of the projection 79 which extends. Since the contact area between the flexible printed circuit board 20 and the protrusion 79 is increased by the connecting member 70, even when a high voltage or high current is applied, the contact resistance is reduced and the driving signal is stably transmitted to the display panel 10. Is approved. In addition, the use area of the flexible circuit board 20 and the driving circuit board 30, which are expensive components, is reduced, thereby reducing the manufacturing cost of the display device.

Hereinafter, a method of connecting the flexible circuit board 20 to the connector 40 will be described with reference to FIGS. 3, 6A, and 6B.

First, in a state in which the cover part 60 is spaced apart from the main body part 50 and the bottom surface 52 of the main body part 50 is opened, as shown in FIG. 3, the flexible circuit board 20 is inserted into the insertion hole ( 51). At this time, the flexible circuit board 20 is inserted into the insertion hole 51 until the end portion of the flexible circuit board 20 contacts the support body 73.

As a result, as illustrated in FIG. 6A, an end portion of the flexible circuit board 20 is positioned on the protrusion 79 of the lower arm 75. Next, the cover portion 60 is pressed toward the main body portion 50.

As a result, as illustrated in FIG. 6B, the end portion of the flexible circuit board 20 insertion region b is pressed by the cover portion 60 toward the protrusion 79 of the lower arm 75, and the upper arm ( By the elastic restoring force of the 71 and the lower arm 75, the driving voltage circuit pattern 21 and the common voltage circuit pattern 23 are connected with the circuit wiring provided on the driving circuit board 30 through the connecting member 70 and the appropriate force. Are interconnected.

By such a structure, the connection between the flexible circuit board 20, the driving circuit board 30, and the connector 40 is secured, and the contact area between the flexible circuit board 20 and the protrusion 79 is increased so that a high current or The high voltage can be stably applied to the display panel.

Hereinafter, a display device and a connector applied thereto according to the second to third embodiments of the present invention will be described with reference to FIGS. 7A to 8. In the second to third embodiments, only the characteristic parts different from the first embodiment will be extracted and described, and the descriptions thereof will be omitted according to the first embodiment or known technology. In addition, for the convenience of description, the same components will be described with the same reference numerals.

7A and 7B are views for explaining the structure of a connector according to a second embodiment of the present invention. The first embodiment exemplifies a case in which the driving voltage circuit wiring 21 and the common voltage circuit wiring 23 are connected to the circuit wiring provided on the driving circuit board 30 through one connector 40. 7A illustrates a case in which the driving voltage circuit wiring 21 and the common voltage circuit wiring 23 are connected to the circuit wiring provided on the driving circuit board 30 through different connectors 40. In the connector 40 according to the second embodiment, one support groove 53 is provided on the bottom surface 52 of the main body 50, and one connection member 70 is supported on the support groove 53. have. The connecting member 70 is provided with a protrusion 79 at the end of the lower arm 75 as in the first embodiment, and the protrusion 79 protrudes toward the upper arm 71. The protrusion 79 extends in the horizontal direction in the flexible circuit board 20 insertion direction.

8 is a diagram for describing a display device and a connector applied thereto according to a third exemplary embodiment of the present invention. As shown in FIG. 8, the connector 40 according to the third embodiment is integrally provided with a connector 40 for transmitting a video signal and a connector 40 for transmitting a driving voltage and a common voltage. That is, in the structure of the connector 40 according to the first embodiment, a plurality of metal pins 80 for transferring the image signal generated by the driving circuit board 30 to a plurality of signal lines (data lines) provided in the display panel 10. ) Is further provided. The plurality of metal pins 80 interconnect the plurality of circuit wirings provided on the flexible circuit board 20 and the driving circuit board 30, respectively, and are manufactured in a structure corresponding to the plurality of circuit wirings.

As a result, the use area of the flexible circuit board 20 and the driving circuit board 30 which are expensive components can be reduced, thereby reducing the manufacturing cost of the display device.

As described above, the present invention provides a display device capable of stably applying high current or high voltage to a display panel.

In addition, a connector for stably applying high current or high voltage to the display panel is provided.

Claims (16)

A display panel provided with a plurality of signal lines; A flexible circuit board connected to the display panel to distribute driving signals to the signal lines; A driving circuit board supplying a driving signal to the flexible circuit board; And A main body portion connecting the flexible circuit board and the driving circuit board and having an insertion hole into which the flexible circuit board is inserted, a cover portion rotatably coupled to the main body portion, and a support provided on a bottom surface of the main body portion A connector having a connecting member supported in the groove, And the connecting member has a protrusion contacting the flexible circuit board when the cover portion is pressed toward the main body, and the protrusion extends in the horizontal direction in the insertion direction of the flexible circuit board. The method of claim 1, The connecting member is supported by the support groove and protrudes toward the cover part, the lower arm is provided at the end, and the upper arm and the lower arm and the upper arm located on the upper portion of the lower arm and the interconnection And a connecting body having a connecting end connected to the driving circuit board. The method of claim 2, And two or more connecting members. The method of claim 2, And the support groove is provided with a number corresponding to the connection member. The method of claim 3, And the main body is mounted on the driving circuit board. The method of claim 3, And the connection member comprises a conductive member. The method of claim 6, And the circuit board having a width corresponding to the length of the protrusion in the horizontal direction in the insertion direction of the flexible circuit board. The method of claim 6, The flexible circuit board is divided into an insertion region inserted into the connector and a connection region connected to the display panel. The circuit wiring provided in the insertion region has a width corresponding to the length of the protrusion in the horizontal direction in the insertion direction of the flexible circuit board, and the circuit wiring provided in the connection region is branched into a plurality of circuit wirings provided in the insertion region. Display device characterized in that. The method of claim 6, The signal line includes a driving voltage line, and the display panel further includes a common electrode. The driving signal may include a driving voltage applied to the driving voltage line and a common voltage applied to the common electrode. The method of claim 9, The driving signal includes an image signal for forming an image on a display panel, the signal line includes a data line and a gate line, One side of the connection member is provided with a plurality of metal pins arranged in a line extending in the insertion direction of the flexible circuit board, And the metal pin transfers the image signal to the data line and the gate line and has a length smaller than the length of the protrusion. In the connector for interconnecting a flexible printed circuit board and a printed circuit board, And a connector having a main body portion having an insertion hole into which the flexible circuit board is inserted, a cover portion rotatably coupled to the main body portion, and a connection member supported by a support groove provided on the bottom surface of the main body portion. , And the connecting member has a protrusion contacting the flexible circuit board when the cover portion is pressed toward the main body, and the protrusion extends in the horizontal direction in the insertion direction of the flexible circuit board. The method of claim 11, The connecting member is supported by the support groove and protrudes toward the cover part, the lower arm is provided at the end, and the upper arm and the lower arm and the upper arm located on the upper portion of the lower arm and the interconnection And a connecting body having a connecting end connected to the printed circuit board. The method of claim 12, The connector is characterized in that less than two. The method of claim 12, The support groove is characterized in that the connector provided with a number corresponding to the connecting member. The method of claim 13, The connector is characterized in that it comprises a conductive member. The method of claim 13, A connector having a width narrower than the length of the protrusion on one side of the connecting member, the plurality of metal pins extending in the insertion direction of the flexible circuit board is arranged in a line.

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