KR20070054353A - Display device - Google Patents

Abstract

The display device according to the present invention includes a display panel for implementing an image, a first printed circuit board for outputting a driving signal for controlling an operation of the display panel, and a cover part formed on the first printed circuit board and having a coupling protrusion. And a second printed circuit having a connector formed of a body part having a groove corresponding to the coupling protrusion and one end thereof electrically connected to the display panel, and the other end thereof fastened to the connector and having a coupling hole into which the coupling protrusion is inserted. Characterized in that it comprises a substrate, it is possible to prevent poor fastening and improve the reliability of the product.

Connector, flexible printed circuit film, control printed circuit board, mating projection, mating hole, mating groove

Description

Display device {DISPLAY DEVICE}

1 is an exploded perspective view of a liquid crystal display according to an exemplary embodiment of the present invention;

FIG. 2 is a rear perspective view of the liquid crystal display shown in FIG. 1;

3 is a view showing a driving circuit unit according to an embodiment of the present invention,

4 is a perspective view showing a state in which the second printed circuit film and the connector according to the first embodiment of the present invention are fastened;

5 is a perspective view illustrating a state in which the second printed circuit film and the connector according to the first embodiment of the present invention are fastened,

6A and 6B are cross-sectional views illustrating a fastening process of a second printed circuit film and a connector according to a first embodiment of the present invention;

7 is a perspective view showing a state in which the second printed circuit film and the connector according to the second embodiment of the present invention is fastened,

8 is a perspective view showing a state in which the second printed circuit film and the connector according to the third embodiment of the present invention are fastened;

9 is a perspective view illustrating a state in which the second printed circuit film and the connector according to the fourth embodiment of the present invention are fastened.

The present invention relates to a display device.

With the recent rapid development of semiconductor technology, the demand for liquid crystal display devices having improved performance while being smaller and lighter is exploding.

The liquid crystal display (LCD), which has recently been in the spotlight among the liquid crystal display devices, has advantages such as miniaturization, light weight, and low power consumption, thereby overcoming the disadvantages of the conventional cathode ray tube (CRT). As an alternative means that has been attracting attention, nowadays, it is installed and used in almost all information processing equipments that require a display device.

In general, a liquid crystal display device applies a voltage to a specific molecular array of liquid crystals and converts the same into a different molecular array, and visual changes of optical properties such as birefringence, photoreactivity, dichroism, and light scattering characteristics of the liquid crystal cell are changed by the molecular arrangement. It is a display device which displays information using the modulation of the light by a liquid crystal cell by converting into a.

The liquid crystal display device includes a liquid crystal display panel displaying an image using a liquid crystal interposed between two substrates, a data printed circuit board and a gate printed circuit board for driving the liquid crystal display panel, and the data and gates. The printed circuit board is connected to the liquid crystal display panel through a data side tape carrier package (hereinafter referred to as TCP) and a gate side TCP, respectively.

The data printed circuit board is connected to one end of a flexible printed circuit film (FPC film) again, and the other end of the flexible printed circuit film is inserted into a connector mounted on a control printed circuit board. It is connected to the control printed circuit board.

At this time, the lead portion formed at the end of the flexible printed circuit film is aligned with the terminal portion of the connector formed on the connector.

Here, since the flexible printed circuit film has flexibility and a thin thickness, a fastening failure occurs such that the flexible printed circuit film is inserted into the connector in a process of being fastened to the connector or is easily pulled out.

In addition, the operator cannot adjust the degree of insertion of the flexible printed circuit film in the process of fastening the connector with the flexible printed circuit film can not be accurately aligned.

The flexible printed circuit film is fastened to the connector by pressing the flexible printed circuit film with the cover of the connector. The pressing force of the cover is weak so that the flexible printed circuit film is easily pulled out by external impact.

Despite this connection failure, if a signal output from the control printed circuit board is provided to the flexible printed circuit film, it causes malfunction of the liquid crystal display device.

The present invention is to solve the above-described problems, to provide a display device that can prevent the fastening of the flexible printed circuit film and the connector, and can maintain a tight coupling between the flexible printed circuit film and the connector.

In addition, the present invention is to provide a display device that can align the flexible printed circuit film and the connector, and improve the reliability of the product.

The display device according to the present invention for achieving the above object is provided on the first printed circuit board and the first printed circuit board for outputting a display panel for implementing an image and a drive signal for controlling the operation of the display panel; A connector formed of a cover portion having a coupling protrusion, a body portion having a groove corresponding to the coupling protrusion, and one end of which is electrically connected to the display panel, the other end of which is fastened to the connector, and the coupling protrusion of which is inserted And a second printed circuit board having holes formed therein.

In such a display device, a second printed circuit board is electrically connected to the display panel through a data printed circuit board (data PCB) coupled to one surface of the display panel.

The coupling protrusion may be made of the same material as the cover part and may be integrally formed with the cover part.

In addition, the coupling hole is formed on both sides of the outside of the lead wire formed on the second printed circuit board, the coupling protrusion is formed on both sides of the lower surface of the cover portion, the groove is formed to correspond to the coupling protrusion in the body portion At least one coupling hole may be formed in a predetermined area between the lead wires formed in the second printed circuit board, and the coupling protrusion and the groove may be formed in the cover part and the body part corresponding to the coupling hole, respectively. It is desirable to be.

In addition, the connector is formed in the body portion, and further comprises a terminal portion consisting of a plurality of conductive terminals for electrical connection with the second printed circuit board, a plurality of lead wires are formed on the second printed circuit board, Preferably, the lead wire covers the terminal portion, and the cover portion covers at least a portion of the second printed circuit board.

In addition, the cover portion is connected to the body portion and the shaft for coupling to the body portion is rotated about the axis, the axis preferably extends perpendicular to the insertion direction of the second printed circuit board.

On the other hand, the display device according to the present invention is provided on the first printed circuit board and the first printed circuit board mounted with a display panel for implementing an image and a signal generator for generating a driving signal for controlling the operation of the display panel; A connector formed of a body portion having a coupling protrusion, a cover portion having a groove corresponding to the coupling protrusion, and one end of which is electrically connected to the display panel, and the other end of which is fastened to the connector, wherein the coupling protrusion is inserted And a second printed circuit board having holes formed therein.

The display device has the coupling protrusion made of the same material as the body portion and integrally formed with the body portion.

The coupling holes are formed on both sides of the lead wire outside the second printed circuit board, and the coupling protrusions are formed on both sides of the lower surface of the body portion, and the grooves are formed to correspond to the coupling protrusions in the cover part. Or at least one coupling hole is formed in a predetermined region between the lead wires formed in the second printed circuit board, and the coupling protrusion and the groove are formed in the body portion and the cover portion, respectively, corresponding to the coupling hole. It is desirable to be.

Hereinafter, with reference to the accompanying drawings, it will be described in detail a preferred embodiment of the present invention.

These embodiments of the present invention are merely for illustrating the present invention, but the present invention is not limited thereto.

1 is an exploded perspective view of a liquid crystal display device 100 according to an embodiment of the present invention, FIG. 2 is a rear perspective view of the liquid crystal display device shown in FIG. 1, and FIG. 3 is a drive according to an embodiment of the present invention. It is a figure which shows a circuit part.

First, referring to FIG. 1, a data printed circuit board 42 to which a flexible printed circuit film 45 is attached is shown. Although FIG. 1 illustrates a liquid crystal display as an example of a display device, this is merely to exemplify the present invention, and the present invention is not limited to the liquid crystal display device. Therefore, the present invention can be applied to other light-receiving liquid crystal display devices in addition to the liquid crystal display devices. In addition, the present invention can be applied to plasma display devices (PDPs) and organic light emitting diodes (OLEDs) where the backlight assembly 70 is unnecessary.

The structure of the liquid crystal display device 100 shown in FIG. 1 is merely for illustrating the present invention, and the present invention is not limited thereto. Therefore, the liquid crystal display device can be modified into other structures.

The liquid crystal display device 100 shown in FIG. 1 includes a liquid crystal display panel 50 which is a flat panel display panel displaying an image, and a backlight assembly 70 which supplies light thereto. In addition, a top chassis 60 is further included to seat and support the liquid crystal display panel 50 on the backlight assembly 70, and may further include other components as necessary.

The liquid crystal display panel assembly 40 driving the liquid crystal display panel 50 includes a liquid crystal display panel 50, a tape carrier package (hereinafter referred to as TCP) 43 and 44, and a data printed circuit board 42. ) And a flexible printed circuit film 45 and the like. The flexible printed circuit film 45 is connected to the connector 10 mounted on the control printed circuit board 46, which is a kind of printed circuit board, and transmits a driving signal for driving the liquid crystal display panel 50 to the data printed circuit board ( To 42).

The liquid crystal display panel 50 includes a TFT substrate 51 composed of a plurality of TFTs (thin film transistors), a color filter substrate 53 positioned on the TFT substrate 51, and a liquid crystal (injected between the substrates). Not shown). The TFT substrate 51 is a transparent glass substrate on which a thin film transistor on a matrix is formed, a data line formed on the TFT substrate 51 is connected to a source terminal, and a gate line formed on the TFT substrate 51 is connected to a gate terminal. have. The data line formed on the TFT substrate 51 has a terminal connected to the control printed circuit board 46. The drain terminal is connected to a pixel electrode made of transparent indium tin oxide (ITO) as a conductive material.

When electrical signals are input from the data printed circuit board 42 to the data lines and gate lines of the liquid crystal display panel 50 described above, electrical signals are input to the source terminal and the gate terminal of the TFT, and these electrical signals are input. Accordingly, the TFT is turned on or turned off so that an electrical signal for driving the pixel is output to the drain terminal.

On the other hand, the color filter substrate 53 is disposed on the TFT substrate 51. The color filter substrate 53 is a substrate in which RGB pixels, which are color pixels in which a predetermined color is expressed while light passes, are formed by a thin film process, and a common electrode made of ITO is generally coated on the entire surface thereof. When a voltage is applied to the gate terminal and the source terminal of the TFT and the thin film transistor is turned on, an electric field is formed between the pixel electrode and the common electrode of the color filter substrate.

By this electric field, the arrangement angle of the liquid crystal injected between the TFT substrate 51 and the color filter substrate 53 is changed, and the light transmittance is changed according to the changed arrangement angle to obtain a desired pixel.

Here, the common electrode may be formed on the TFT substrate 51. Even in this case, when a voltage is applied to the gate terminal and the source terminal of the TFT and the thin film transistor is turned on, an electric field is formed between the pixel electrode formed on the TFT substrate 51 and the common electrode.

In order to control the arrangement angle of the liquid crystals of the liquid crystal display panel 50 and the timing at which the liquid crystals are arranged, a driving signal and a timing signal are applied to the gate line and the data line of the TFT, respectively, on the gate side and the data side of the liquid crystal display panel 50. TCPs 43 and 44 are attached for the application of the gate drive signal and the data drive signal. The gate TCP 43 is connected to the data printed circuit board 42 through wirings formed on the TFT substrate 51.

In this case, the gate TCP 43 may be omitted, and the gate driving circuit may be made of a thin film transistor or the like directly on the substrate.

The data printed circuit board 42, which receives an image signal from the outside of the liquid crystal display panel 50 and transmits driving signals to the data line and the gate line, is connected to the data TCP 44.

The control printed circuit board 46, which is connected to the data printed circuit board 42 through the flexible printed circuit film 45, has a data signal, a gate driving signal, and these signals, which are signals for driving the liquid crystal display panel 50. A plurality of timing signals are generated for applying them at an appropriate time and are applied to the gate line and the data line of the liquid crystal display panel 50 through the data printed circuit board 42.

The backlight assembly 70 is provided below the liquid crystal display panel assembly 40 to provide uniform light to the liquid crystal display panel 50. The backlight assembly 70 is supported by an upper mold frame 71 located above and a lower mold frame 79 located below, and inside the bottom chassis 78. The light source 76 is stored.

The backlight assembly 70 is positioned at a lower surface of the light guide plate 74 for guiding light, the light guide plate 74 for guiding light emitted from the light source 76 to the liquid crystal display panel 50, and the light guide plate 74. Reflective sheet 77 for reflecting light emitted from 76, light source cover 75 for covering and protecting the light source 76 and coating a reflective material on the inner surface to reflect light emitted from the light source 76, and a light source And an optical sheet 72 for securing the luminance characteristic of the light from the 76 and providing the light to the liquid crystal display panel 50.

Although a lamp is shown as an example of the light source 76 in FIG. 1, this is merely to illustrate the present invention and the present invention is not limited thereto. Therefore, a light emitting diode (LED) may be used instead of a lamp, or a light source having a linear light source or a surface light source may be used.

An inverter 48 is provided on the bottom of the bottom chassis 78 so that a wire 761 (shown in FIG. 2) and a socket 73 (shown in FIG. 2) connected to the light source 76 are shown. After converting the external power to a constant voltage level through the () to apply to the light source 76 to drive the light source (76).

The data TCP 44 and the data printed circuit board 42 are covered with the top chassis 60 while bending along the sides of the upper mold frame 71 to accommodate the liquid crystal display panel assembly 40 on the backlight assembly 70. . Although not shown in FIG. 1, the liquid crystal display device 100 is manufactured by combining the front case and the rear case which are respectively disposed on the upper part of the top chassis 60 and the lower part of the lower mold frame 79.

The flexible printed circuit film 45 shown in FIG. 1 is inserted into and fixed to the connector 10 mounted on the control printed circuit board 46. Accordingly, the driving signal generated by the control printed circuit board 46 may be transmitted to the liquid crystal display panel 50.

FIG. 2 is a rear perspective view of the liquid crystal display 100 shown in FIG. 1, and after combining all the internal components of the liquid crystal display 100 shown in FIG. 1, rotated by 180 ° about the X axis. Although the connector 10 is shown mounted on the control printed circuit board 46 in FIG. 2, this is merely to illustrate the present invention, but the present invention is not limited thereto. Therefore, the present invention can also be applied to another printed circuit board in the liquid crystal display device 100.

As shown by the arrow in FIG. 2, the control printed circuit board 46 is moved to the Y-axis direction, and the flexible printed circuit film 45 is inserted and fixed to the control printed circuit board 46. FIG. The connector 10 mounted on the control printed circuit board 46 extends in the X-axis direction and includes a cover portion 101 and a body portion 103 connected to the shaft 12 so as to be foldable therefrom.

3 shows a driving circuit section, which includes a gate driver 122, a data driver 126, a timing controller (not shown), and various circuit elements, and includes a gate printed circuit board 124 and a data printed circuit board. It is mounted at 42 to generate various signals necessary to implement an image. Here, the gate driver 122 and the gate printed circuit board 124 may be omitted and formed directly on the substrate.

A control printed circuit board 46 is further provided for controlling the drive of the gate and data printed circuit boards 124 and 42. The gate printed circuit board 124 and the data printed circuit board 42 are electrically connected to data lines and gate lines (not shown) through the gate tape carrier package 121 and the data tape carrier package 125. Here, the timing controller 192 and the power supply unit 194 are mounted on the control printed circuit board 46 to generate data / gate control signals and power signals using various electrical signals from the outside. The control printed circuit board 46 is electrically connected through the data printed circuit board 42 and the flexible printed circuit film 45 and the connector 10, and the data printed circuit board 42 is the gate printed circuit board 124. ) Is electrically connected.

At this time, the control printed circuit board 46 may be individually connected to the data printed circuit board 42 and the gate printed circuit board 124 through each flexible printed circuit film 45. The gate printed circuit board 124 and the data printed circuit boards 124 and 42 may be configured as integrated printed circuit boards in which a data portion and a gate portion are formed on one substrate.

Looking at the coupling structure of the control printed circuit board 46 and the data printed circuit board 42, a connector 10 is formed on one side of the control printed circuit board 46, and the flexible printed circuit film 45 is opened. It is connected to one side of the data printed circuit board 42 corresponding to the control printed circuit board 46 by a crimping process. Here, the flexible printed circuit film 45 is electrically connected to the connector 10 and electrically connected to the flexible printed circuit film 45, thereby receiving various signals generated from the timing controller 192 and the power supply unit 194 of the control printed circuit board 46. Transfer to 42. As described above, some of the various signals generated by the timing control unit 192 and the power supply unit 194 of the control printed circuit board 46 may include the flexible printed circuit film 45, the connector 10, and the data printed circuit board 42. Is applied to the data driver 126, and a portion thereof is applied to the gate driver 122 through the data printed circuit board 42 and the gate printed circuit board 124. Here, the various signals applied are converted into image signals and gate control signals so that the image signals to be displayed on the liquid crystal display panel 50 are transmitted to the data lines (not shown) through the data tape carrier package 125 and input. Among the signals, a signal for controlling the gate line is transmitted to the gate line (not shown) through the gate tape carrier package 121.

Hereinafter, the flexible printed circuit film 45 and the connector 10 for electrically connecting the control printed circuit board 46 and the data printed circuit board 42 will be described in more detail.

Figure 4 is a perspective view showing the shape of the flexible printed circuit film and the connector according to the first embodiment of the present invention, Figure 5 is a flexible printed circuit film and the connector according to the first embodiment of the present invention 6A and 6B are cross-sectional views illustrating a fastening process of the flexible printed circuit film and the connector according to the first embodiment of the present invention.

First, referring to FIG. 4, the flexible printed circuit film 45 may include input / output signals for inputting / outputting signals and a plurality of lead wires 30 formed on a flexible tape-shaped insulating base film 378. Coupling holes 109 for coupling with the output terminal parts 374 and 375 and the connector 10 are provided.

The input / output terminal portions 374 and 375 are output formed on the input terminal portion 374 formed on one end of the insulating base film 378 connected to the control printed circuit board 46 and the other end connected to the data printed circuit board 42. The terminal unit 375 is included. Here, the input terminal portion 374 is inserted into the connector 10 formed on the control printed circuit board 46, and the output terminal portion 375 is interconnected with the data printed circuit board 42 by a thermocompression bonding process.

The lead wires 30 of the input / output terminal portions 374 and 375 are exposed without being covered with a cover film (not shown). Therefore, the lead wires 30 of the input / output terminal portions 374 and 375 are connected to the control printed circuit board 46 and the data printed circuit board 42, respectively, to electrically conduct each other.

The insulating base film 378 is formed of a plurality of lead wires 30 which transmit a signal by electrically connecting the data printed circuit board 42 and the control printed circuit board 46, and the plurality of lead wires 30 are wide. Arranged to insulate each other in the direction. Here, the lead wires 30 are formed using a metal such as copper. On the other hand, the lead wire 30 extends from the input terminal portion 374 to the output terminal portion 375. The lead wire 30 is covered with a thin flexible cover film (not shown) formed on the insulating base film 378. As such, by covering the lead wires 30 with the insulating base film 378 and the cover film, it is possible to prevent the lead wires 30 from being electrically shorted to each other and to prevent the chemical corrosion from being exposed to the air. Can be.

Coupling holes 109 are formed on both sides of the lead wire 30 adjacent to the input terminal part 374. Here, the coupling hole 109 is formed to a size that can accommodate the coupling protrusion 107 formed in the cover portion 101 of the connector 10 and is fastened to the coupling protrusion 107 and the flexible printed circuit film 45. To prevent flow.

On the other hand, the connector 10 is fastened to the flexible printed circuit film 45 on one side of the control printed circuit board 46. The connector 10 is connected to a body portion 103 having a coupling groove 108, a cover portion 101 for pressing the flexible printed circuit film 45, and an input terminal portion 374 of the flexible printed circuit film 45. And a coupling protrusion 107 formed on the terminal portion 105 and the cover portion 101.

The body portion 103 is fixed on the control printed circuit board 46 in a rectangular shape and has a coupling groove 108. The coupling groove 108 is formed to have a size corresponding to the coupling protrusion 107 so that the coupling protrusion 107 inserted into the coupling hole 109 is disposed between the connector 10 and the flexible printed circuit film 45. Harden the bond.

The cover part 101 is connected to the body part 103 through the shaft 12 to enable the pivoting movement, and presses the flexible printed circuit film 45 from above to fix the lead wire of the flexible printed circuit film 45. 30 and the terminal portion 105 of the connector 10 make good contact with each other.

The shaft 12 extends perpendicular to the insertion direction of the flexible printed circuit film 45, and the cover portion 101 is rotated about the shaft 12.

One end of the terminal portion 105 is formed on the upper surface of the body portion 103 so as to correspond to the lead wire 30 of the input terminal portion 374 of the flexible printed circuit film 45 facing each other, the flexible printed circuit film 45 In contact with the lead wires 30 of the input terminal portion 374 of the to transmit the signals.

Meanwhile, the other end of the terminal portion 105 protrudes outward from the body portion 103 and is formed to be soldered to the control printed circuit board 46.

The coupling protrusion 107 protrudes from the lower surface of the cover portion 101 and is formed to correspond to the coupling hole 109 of the flexible printed circuit film 45 and the coupling groove 108 of the body portion 103. It has a size that can be inserted into the (109) and the coupling groove (108). In addition, one side may be smoothly formed in order to facilitate fastening with the coupling hole 109 and the coupling groove 108.

Here, even when the flexible printed circuit film 45 is not correctly inserted into the connector 10, the coupling protrusion 107 may include the lead wires 30 of the input terminal portion 374 of the flexible printed circuit film 45. It serves as a guide so as to correspond exactly with the terminal portion 105 of 10). Thus, when the flexible printed circuit film 45 is engaged with the flexible printed circuit film 45 connector 10 formed on the control printed circuit board 46, the engaging projection 107, the engaging hole 109 and the engaging Since the groove 108 prevents the fastening guide role and the flow, the phenomenon in which the flexible printed circuit film 45 is bent or the conductive line is peeled off can be reduced, thereby preventing the lead wires 30 from being shorted to each other. The flexible printed circuit film 45 can be prevented from falling out of the flexible printed circuit film 45 connector 10.

6A and 6B, the flexible printed circuit film 45 is horizontally inserted into the connector 10 such that the lead wire 30 of the input terminal portion 374 and the terminal portion 105 of the connector 10 are connected to each other. . In this case, as shown in FIGS. 6A to 6B, the cover portion 101 is rotated about the shaft 12 to fit the engaging projection 107 formed on the lower surface of the cover portion 101 to the engaging hole 109. After that, the cover 101 is pushed down. Then the coupling protrusion 107 is inserted into the coupling groove 108 of the body portion 103 through the coupling hole 109.

The coupling hole 109 and the coupling protrusion 107 and the coupling groove 108 are coupled to each other to prevent the flow of the flexible printed circuit film 45 and the connector 10 and guide the position, so that the input terminal portion 374 The lead wire 30 of and the terminal portion 105 of the connector 680 are exactly matched and connected.

7 is a perspective view showing a state in which the flexible printed circuit film and the connector according to the second embodiment of the present invention are fastened.

In the present embodiment, the rest of the configuration except for the coupling protrusion 107, the coupling hole 109 and the coupling groove 108 is the same as the above-described first embodiment will be omitted duplicated, the same configuration for the same Reference numerals and names will be used.

Referring to FIG. 7, the flexible printed circuit film 45 according to the second embodiment of the present invention has a plurality of lead wires 30 and signals formed on a flexible tape-shaped insulating base film 378. Input / output terminal portions 374 and 375 for inputting / outputting them, and a coupling hole 109 for coupling with the connector 10. A flexible printed circuit film 45 is provided on one side of the control printed circuit board 46; The connector 10 to be fastened is formed. The connector 10 is connected to a body portion 103 having a coupling groove 108, a cover portion 101 for pressing the flexible printed circuit film 45, and an input terminal portion 374 of the flexible printed circuit film 45. And a terminal portion 105 and a coupling protrusion 107.

Here, the coupling hole 109 is formed in the center of the lead wire 30 adjacent to the input terminal portion 374, the coupling protrusion 107 and the coupling groove 108 is formed at a position corresponding to the coupling hole 109.

Therefore, the flexible printed circuit film 45 is inserted horizontally into the connector 10 so that the lead wire 30 of the input terminal portion 374 and the terminal portion 105 of the connector 10 are connected, and the cover portion 101 is inserted. After rotating about the axis 12 to align the engaging projection 107 formed on the lower surface of the cover portion 101 with the engaging hole 109, the cover portion 101 is pressed down. Then, the coupling protrusion 107 is inserted into the coupling groove 108 of the body portion 103 through the coupling hole 109.

8 is a perspective view showing a state in which the flexible printed circuit film and the connector according to the third embodiment of the present invention are fastened.

In the present embodiment, the rest of the configuration except for the coupling protrusion 107, the coupling hole 109 and the coupling groove 108 is the same as the above-described first and second embodiments will be omitted the duplicate description, the same configuration For the same reference numerals and names will be used.

Referring to FIG. 8, the flexible printed circuit film 45 according to the third exemplary embodiment of the present invention has a plurality of lead wires 30 and signals formed on a flexible tape-shaped insulating base film 378. Input / output terminal portions 374 and 375 for inputting / outputting them, and a coupling hole 109 for coupling with the connector 10, and the control printed circuit board 46 has a flexible printed circuit film 45 at one side thereof. The connector 10 is formed to be fastened with. The connector 10 is connected to a body portion 103 having a coupling groove 108, a cover portion 101 for pressing the flexible printed circuit film 45, and an input terminal portion 374 of the flexible printed circuit film 45. And a terminal portion 105 and a coupling protrusion 107.

Here, the coupling holes 109 are formed in a plurality of predetermined regions between the lead wires 30 adjacent to the input terminal portion 374 and are preferably formed at equal intervals, and the coupling protrusion 107 and the coupling groove 108 are coupling holes. It is formed at a position corresponding to 109.

Therefore, the flexible printed circuit film 45 is inserted horizontally into the connector 10 so that the lead wire 30 of the input terminal portion 374 and the terminal portion 105 of the connector 10 are connected, and the cover portion 101 is inserted. After rotating about the axis 12 to align the engaging projection 107 formed on the lower surface of the cover portion 101 with the engaging hole 109, the cover portion 101 is pressed down. Then, the coupling protrusion 107 is inserted into the coupling groove 108 of the body portion 103 through the coupling hole 109.

9 is a perspective view showing a state in which the flexible printed circuit film and the connector according to the fourth embodiment of the present invention are fastened.

In the present embodiment, the rest of the configuration except for the coupling protrusion 107, the coupling hole 109 and the coupling groove 108 is the same as the first, second, and third embodiments described above, and the duplicate description will be omitted. For the same configuration, the same reference numerals and names will be used.

Referring to FIG. 9, the flexible printed circuit film 45 according to the fourth exemplary embodiment of the present invention has a plurality of lead wires 30 and signals formed on a flexible tape-shaped insulating base film 378. Input / output terminal portions 374 and 375 for inputting / outputting them, and a coupling hole 109 for coupling with the connector 10, and the control printed circuit board 46 has a flexible printed circuit film 45 at one side thereof. The connector 10 is formed to be fastened with. The connector 10 is connected to the body portion 103 on which the engaging projection 107 is formed, the cover portion 101 for pressing the flexible printed circuit film 45, and the input terminal portion 374 of the flexible printed circuit film 45. And a coupling groove 108 formed in the terminal portion 105 and the cover portion 101.

That is, the coupling protrusion 107 according to the present embodiment protrudes vertically from the upper surface of the body portion 103 of the connector 10. In this case, the coupling protrusion 107 is formed at a suitable height to pass through the coupling hole 109 of the flexible printed circuit film 45 and engage with the defect groove 108 formed in the cover portion 101 of the connector 10. .

The coupling hole 109 is formed at both sides of the lead wire 30 adjacent to the input terminal portion 374, or is formed at the center of the lead wire 30 adjacent to the input terminal portion 374 or the lead wire 30 adjacent to the input terminal portion 374. It is formed in plural at equal intervals in a predetermined region therebetween. Here, the coupling protrusion 107 and the coupling groove 108 is also formed at a position corresponding to the coupling hole 109.

Accordingly, the flexible printed circuit film 45 is inserted horizontally into the connector 10 such that the lead wire 30 of the input terminal portion 374 and the terminal portion 105 of the connector 10 are connected to each other, thereby providing the coupling hole 109. Fit to the engaging projection 107 of the body portion 103.

Thereafter, the cover 101 is rotated about the shaft 12 so that the coupling groove 108 formed on the bottom surface of the cover 101 fits with the coupling protrusion 107 protruding through the coupling hole 109. Press down on the cover portion 101. Then, the coupling protrusion 107 is inserted into the coupling groove 108 of the cover portion 101 through the coupling hole 109 and fastened.

As described above, when the input terminal portion of the flexible printed circuit film 45 is inserted into the connector 10 and the flexible printed circuit film 45 and the connector 10 are fastened, the lead wire 30 of the input terminal portion is connected to the connector. Various signals generated by the control printed circuit board 46 connected to the terminal portion 105 of the 10 may be formed on the data printed circuit board 42 through the lead wires 30 formed on the flexible printed circuit film 45. Applied to the driving circuit.

 The display device is for describing the present invention in detail and the present invention is not limited thereto. In addition, although this embodiment demonstrates the flexible printed circuit film 45 and the connector 10 for a display apparatus as an example, this invention displays not only a liquid crystal display but a display of a plasma display panel, a field emission element, an electroluminescent element, etc. In addition to the device, it is also applicable to any device having the flexible printed circuit film 45 and the connector 10.

As described above, the display device according to the present invention includes a coupling hole, a coupling protrusion, and a coupling groove, and thus, the flow of the flexible printed circuit film is prevented, so that the flexible printed circuit film is missing, the flexible printed circuit film and the like. Not only can the fastening of the connector be prevented, but also the fastening can be prevented from being operated in a bad state, thereby preventing driving failure of the display device and damage of various components.

In addition, the display device according to the present invention can align the flexible printed circuit film and the connector and provide a display device capable of improving the reliability of the product.

Although the present invention has been described above, it will be readily understood by those skilled in the art that various modifications and variations are possible without departing from the spirit and scope of the claims set out below.

Claims (14)

      A display panel for implementing an image, A first printed circuit board outputting a driving signal for controlling an operation of the display panel; A connector provided on the first printed circuit board, the connector including a cover portion having a coupling protrusion and a body portion having a groove corresponding to the coupling protrusion, and A second printed circuit board having one end electrically connected to the display panel and the other end fastened to the connector, and having a coupling hole into which the coupling protrusion is inserted. Display device comprising a. In claim 1, The second printed circuit board is electrically connected to the display panel through a data printed circuit board (source PCB) coupled to one surface of the display panel. In claim 1, The coupling protrusion is made of the same material as the cover part. In claim 1, And the coupling protrusion is integrated with the cover part. In claim 1, The coupling hole is located on both sides of the outside of the lead wire formed in the second printed circuit board, The engaging projection is located on both sides of the lower surface of the cover portion, The groove is in a position corresponding to the engaging projection Display device. In claim 1, The number of the coupling holes is one or more, The coupling hole is located in a predetermined region between the lead wires formed in the second printed circuit board, The coupling protrusion and the groove are in a position corresponding to the coupling hole Display device. In claim 1, The connector further includes a terminal portion formed on the body portion, the terminal portion comprising a plurality of conductive terminals for electrical connection with the second printed circuit board. In claim 7, A plurality of lead wires are formed on the second printed circuit board, the lead wires cover the terminal portion, and the cover portion covers at least a portion of the second printed circuit board. In claim 1, And the cover portion is connected to the body portion and the shaft for coupling with the body portion, and the shaft extends perpendicularly to the insertion direction of the second printed circuit board. In claim 9, And the cover portion is rotatable about the axis. A display panel for implementing an image, A first printed circuit board having a signal generator configured to generate a driving signal for controlling an operation of the display panel; A connector provided on the first printed circuit board, the connector including a body portion having a coupling protrusion and a cover portion having a groove corresponding to the coupling protrusion; A second printed circuit board having one end electrically connected to the display panel, the other end fastened to the connector, and a coupling hole into which the coupling protrusion is inserted. Display device comprising a. In claim 11, The engaging projection is made of the same material as the body portion, The engaging projection is integral with the body portion Display device. In claim 11, The coupling hole is located on both sides of the outside of the lead wire formed in the second printed circuit board, The coupling protrusion is located on both sides of the lower surface of the body portion, The groove is in a position corresponding to the engaging projection Display device. In claim 1, The number of the coupling holes is one or more, The coupling hole is located in a predetermined region between the lead wires formed in the second printed circuit board, The coupling protrusion and the groove are in a position corresponding to the coupling hole Display device.

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