KR20120053859A - Duplex liquid crystal display display device - Google Patents

Abstract

PURPOSE: A double sided liquid crystal display device is provided to minimize the width of a bezel and minimize the entire size. CONSTITUTION: First and second support mains(114a,114b) edges a double sided backlight unit and first and second liquid crystal panels. First and second case tops(112a,112b) are coupled with the first and second support mains. The first and second case tops edge the first and second liquid crystal panels. First and second source printed circuit boards are located in one edge of the first and second liquid crystal panels. The first and second source printed circuit boards provide data driving signals to the first and second liquid crystal panels.

Description

Duplex liquid crystal display {DUPLEX LIQUID CRYSTAL DISPLAY DISPLAY DEVICE}

The present invention relates to a double-sided liquid crystal display device having a narrow bezel.

Liquid crystal display devices (LCDs), which are used for TVs and monitors due to their high contrast ratio and are advantageous for displaying moving images, are characterized by optical anisotropy and polarization of liquid crystals. The principle of image implementation by

Such a liquid crystal display is an essential component of a liquid crystal panel bonded through a liquid crystal layer between two side-by-side substrates, and realizes a difference in transmittance by changing an arrangement direction of liquid crystal molecules with an electric field in the liquid crystal panel. do.

However, since the liquid crystal panel does not have its own light emitting element, a separate light source is required in order to display the difference in transmittance as an image. To this end, a backlight including a light source is disposed on the back of the liquid crystal panel.

1 is an exploded perspective view of a conventional liquid crystal display device module, FIG. 2 is a rear view showing a rear surface of a cover bottom in which a source printed circuit board is located in the liquid crystal display module of FIG. 1, and FIG. 3 is a source printed circuit of FIG. 2. A perspective view showing the substrate in detail.

As shown in FIG. 1, the liquid crystal display module 1 includes a liquid crystal panel 10, a backlight unit 20, a support main 14, a cover bottom 16, and a top cover 12.

The liquid crystal panel 10 is a part that plays a key role in image expression and is composed of first and second substrates bonded to each other with a liquid crystal layer interposed therebetween.

The backlight unit 20 is provided behind the liquid crystal panel 10.

The backlight unit 20 includes a lamp 18 arranged along at least one edge length direction of the support main 14, a reflector 26 seated on the cover bottom 16, and a mount on the reflector 26. It comprises a light guide plate 24 and a plurality of optical sheets 22 interposed thereon.

The liquid crystal panel 10 and the backlight unit 20 include a top cover 12 and a backlight unit 20 that surround the top edge of the liquid crystal panel 10 in a state where the edges are surrounded by the support main body 14 having a rectangular frame shape. The cover bottoms 16 covering the back surface of the backlight unit 20 are respectively coupled in front and rear to be integrated through the support main 14.

In this case, the lamp 18 of the backlight unit 20 may include a cold cathode fluorescent lamp (CCFL), an external electrode fluorescent lamp (LED), and a light emitting diode (LED). In particular, LEDs have been widely used as a display light source having features such as small size, low power consumption, and high reliability.

The light emitted from the light source is incident to the light incident part of the light guide plate 24 and then refracted toward the liquid crystal panel 10 therein, and the plurality of optical sheets 22 together with the light reflected by the reflector 26. During the passage, the light is processed into a more uniform surface light source and is supplied to the liquid crystal panel 10.

Meanwhile, at one edge of the liquid crystal panel 10, a source printed circuit board 30 for outputting image signal voltages to a plurality of data lines is connected to a connection member 28 such as a flexible circuit board or a tape carrier package (TCP). Is connected via).

As shown in FIG. 2, the source printed circuit board 30 is rotated by 180 degrees to the rear surface of the cover bottom 16 during the modularization process and is in close contact with the rear surface of the cover bottom 16.

Referring to FIG. 3, a connector 40 for receiving various driving signals and video signals from the outside is positioned at one side of the long edge of the source printed circuit board 30, and the connector 40 is a signal cable 47. Side Entry Type is used to move and mount in a direction parallel to the source printed circuit board 30 surface.

Accordingly, in the final step of the modularization process, the connector holder 46 connected to one end of the signal cable 47 is inserted into the connector 40 on the source printed circuit board 30 in close contact with the rear surface of the cover bottom 16. The connector 40 and the signal cable 47 are electrically connected.

Thereafter, a speaker (not shown) including a system board (not shown) and the like are combined with the liquid crystal display module 1 for the finished product operation, and a packaging case (not shown) surrounding the four edges of the liquid crystal display module 1. C) is mounted on the liquid crystal display module 1 to complete the liquid crystal display device. Such a packaging case may include a bezel (not shown) having a predetermined width, and the bezel may include upper, lower, left and right sides.

As described above, the source printed circuit board 30 is bent to the rear surface of the cover bottom 16 in close contact with the rear surface of the cover bottom 16 so that the upper or lower bezel occupies the source printed circuit board 30 in the packaging case. The width of the bezel can be reduced, and the overall size of the liquid crystal display can be reduced.

Recently, research has been actively conducted to develop a liquid crystal display device having a wider display area with a minimum bezel width.

On the other hand, recently, a double-sided liquid crystal display device has been developed to allow viewing of moving images from both sides.

In a double-sided liquid crystal display, a backlight unit is placed in the center and a liquid crystal panel is positioned on both sides of the backlight unit so that the same or different images can be displayed on both sides.

In the case of a double-sided liquid crystal display, the source printed circuit board cannot be flipped 180 degrees because the moving image can be viewed from both sides.

Accordingly, the double-sided liquid crystal display has a problem in that the width of the lower bezel becomes wider to cover the signal cable fastened to the connector of the source printed circuit board and the source printed circuit board, thereby increasing the overall size.

Accordingly, an object of the present invention is to provide a double-sided liquid crystal display device capable of minimizing the width of the bezel and minimizing the overall size.

In accordance with an aspect of the present invention, a double-sided liquid crystal display device includes a double-sided backlight unit emitting light to a first surface and a second surface opposite to the first surface, and the double-sided backlight unit. A first liquid crystal panel configured on the first surface of the backlight unit, a second liquid crystal panel configured on the second surface of the double-sided backlight unit, and an edge between the double-sided backlight unit and the first and second liquid crystal panels It is coupled along the support main, the support main, and positioned along one edge of the first and second case top and the first and second liquid crystal panel bordering the edge of the first and second liquid crystal panel, respectively, A first source and a second source printed circuit board for providing a data driving signal to the first and second liquid crystal panels, and mounted perpendicularly to the planes of the first and second source printed circuit boards, respectively, to the external body. It includes first and second connector for transmitting a signal.

The first and second connectors may be formed to face the edges of the first and second source printed circuit boards connected to the first and second liquid crystal panels so as to face outwards of the opposite edges. .

The first and second signal cables connected to the external main body may be inserted into and fixed to the first and second source printed circuit boards vertically through the first and second connectors.

The support main is characterized by consisting of the first and second support main.

Meanwhile, a double-sided liquid crystal display according to an exemplary embodiment of the present invention includes a double-sided backlight unit emitting light to a first surface and a second surface opposite to the first surface, and a first surface of the double-sided backlight unit. A first liquid crystal panel constituted, a second liquid crystal panel formed on a second surface of the double-sided backlight unit, a support main bordering edges of the double-sided backlight unit and the first and second liquid crystal panels, and the support main Coupled to the first liquid crystal panel and positioned along one edge of the first and second case tops and the first liquid crystal panel and the second liquid crystal panel, respectively; A first source and a second source printed circuit board for providing a data driving signal, the first and second source printed circuit boards being horizontally mounted on each of the planes of the first and second source printed circuit boards; Plane of To each position on the side and a first and a second connector for transmitting a signal from outside the body.

In addition, on one side of the first and second source printed circuit boards, the first and second signal cables connected to the external main body are connected to the first and second source printed circuits through the first and second connectors. It is characterized in that the horizontal insertion and fixed to the plane of the substrate, respectively.

In addition, the support main is characterized by consisting of the first and second support main.

As described above, according to the double-sided liquid crystal display device according to the present invention, the connector of the signal cable by mounting the signal cable perpendicular to the source printed circuit board using a connector disposed on the source printed circuit board as a top entry type To reduce the width of the lower bezel widened to cover the holder to minimize the overall size of the double-sided liquid crystal display device, the process of mounting the signal cable to the connector is made easier.

Also, use a side entry type connector that allows the signal cable to be mounted horizontally on the source printed circuit board, but change the position of the connector to the side edge of the source printed circuit board, making it easier to attach the signal cable to the connector. To be done.

1 is an exploded perspective view of a conventional liquid crystal display module.
FIG. 2 is a rear view illustrating a rear surface of a cover bottom in which a source printed circuit board is located in the liquid crystal display module of FIG. 1.
3 is a perspective view showing in detail the source printed circuit board of FIG.
4 is an exploded perspective view of a double-sided liquid crystal display device module according to an embodiment of the present invention.
5 is a view schematically illustrating an example of fastening a signal cable to a source printed circuit board according to the present invention.
6 is a view schematically illustrating another example of fastening a signal cable to a source printed circuit board according to the present invention.
7 is a front view illustrating the bezel width of the double-sided liquid crystal display of FIG. 6.

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

4 is an exploded perspective view schematically illustrating a double-sided liquid crystal display module according to an exemplary embodiment of the present invention.

As shown in FIG. 4, the double-sided liquid crystal display device module 100 has double-sided light emitted from the first and second liquid crystal panels 110a and 110b and the first and second liquid crystal panels 110a and 110b, respectively. First and second support mains 114a and 114b for modularizing the backlight unit 120, the first and second liquid crystal panels 110a and 110b, and the double-sided backlight unit 120, and the first and second case tops. 112a and 112b.

The double-sided backlight unit 120 includes first and second lamps 118a and 118b arranged along both longitudinal directions of the first and second support mains 114a and 114b, and first and second lamps 118a and 118b. ) And a plurality of first optical sheets 122a formed on the front surface of the light guide plate 124 and a plurality of second optical sheets 122b formed on the rear surface of the light guide plate 124. It includes.

At this time, the light source of the double-sided backlight unit 120 is called a cold cathode fluorescent lamp (CCFL), an external electrode fluorescent lamp (LED), and a light emitting diode (LED). In particular, LEDs have been widely used as a display light source having features such as small size, low power consumption, and high reliability.

The light emitted from the first and second lamps 118a and 118b is incident on the light incident portion of the light guide plate 124 and then refracted toward the first and second liquid crystal panels 110a and 110b therein. While passing through the second plurality of optical sheets 122a and 122b, the light is processed into a more uniform high-quality surface light source and supplied to the first and second liquid crystal panels 110a and 110b.

To this end, patterns such as ovals, polygons, combs, stripe stripes, holograms and dots are formed in the inner center of the light guide plate 124 by a printing method or an injection method. They scatter light incident through the incidence part to be emitted to the front and rear surfaces of the light guide plate 124.

In addition, the plurality of first optical sheets 122a may vertically generate light emitted from the front surface of the light guide plate 124 to improve light efficiency.

The plurality of first optical sheets 122a may include a first diffusion sheet for diffusing the light emitted from the light guide plate 124 to the entire area, and a propagation angle of the light diffused by the first diffusion sheet for the first liquid crystal panel 110a. And at least one first prism sheet standing vertically.

Accordingly, the light emitted from the light guide plate 124 is incident on the first liquid crystal panel 110a via the first diffusion sheet and the first prism sheet.

Similarly, the plurality of second optical sheets 122b vertically generates light emitted from the rear surface of the light guide plate 124 to improve light efficiency.

The plurality of second optical sheets 122b may include a second diffusion sheet for diffusing the light emitted from the light guide plate 124 to the entire area, and an advancing angle of the light diffused by the second diffusion sheet for the second liquid crystal panel 110b. And at least one second prism sheet standing vertically.

Accordingly, the light emitted from the light guide plate 124 is incident on the second liquid crystal panel 110b via the second diffusion sheet and the second prism sheet.

Meanwhile, at one edge of each of the first and second liquid crystal panels 110a and 110b, the first and second source printed circuit boards 130a and 130b for outputting image signal voltages to a plurality of data lines are flexible circuit boards or tapes. The first and second connection members 128a and 128b, such as a carrier package (TCP), are connected via media.

The double-sided backlight unit 120 having such a structure is called an edge type method, and according to the purpose, the first and second support main bodies 114a and 114b may have a first edge along the inner longitudinal direction of both edges facing each other. And a plurality of lamps including the second lamps 118a and 118b.

In addition, although not shown in the drawings, it is also possible to use a direct backlight unit that omits the light guide plate between the plurality of first and second optical sheets and arranges the plurality of lamps side by side.

The double-sided backlight unit 120 and the first and second liquid crystal panels 110a and 110b as described above display an image in a state where edges are surrounded by the first and second support mains 114a and 114b having a rectangular frame shape. The first case top 112a covering the front edge of the first liquid crystal panel 110a and the second case top 112b covering the front edge of the second liquid crystal panel 110b for displaying an image are respectively coupled in front and rear sides. The first and second support main bodies 114a and 114b are integrated with each other.

In other words, the double-sided backlight unit 120 is positioned at the center, and the first and second support mains 114a and 114b which border the bidirectional edges of the double-sided backlight unit 120 are positioned, and the display surface on which the image is embodied. The first and second liquid crystal panels 110a and 110b are positioned to face the outward directions, and the first and second case tops 112a and 112b are coupled to the first and second support mains 114a and 114b. As a result, the double-sided backlight unit 120 and the first and second liquid crystal panels 110a and 110b are integrally fixed.

In this case, the case top may be referred to as a top cover or a top case, and the support main may be referred to as a guide panel, a main support, or a mold frame.

Meanwhile, first and second source printed circuit boards 130a and 130b for outputting image signal voltages to a plurality of data lines are formed at one side long edge of each of the first and second liquid crystal panels 110a and 110b. The first and second connection members 128a and 128b, such as a tape carrier package (TCP), are connected via media.

The double-sided liquid crystal display device module 100 may further include first and second gate printed circuit boards (not shown) electrically connected to the first and second source printed circuit boards 130a and 130b.

Alternatively, the first and second source printed circuit boards 130a and 130b receive a video signal input from the outside to provide a data driving signal to the first and second liquid crystal panels 110a and 110b. A gate part for providing a gate driving signal may be formed in the gate lines of the first and second liquid crystal panels 110a and 110b.

In addition, the first and second source printed circuit boards 130a and 130b may include a power supply unit (not shown) and a timing control unit (not shown) that generate data, gate control signals, and power signals using various electrical signals from the outside. It may further include, it may be provided on a separate printed circuit board.

Accordingly, the gate driving signal for generating a plurality of timing signals through various electrical signals supplied from the outside is applied to the gate lines of the first and second liquid crystal panels 110a and 110b, and the data signals are first and the first. It is applied to the data lines of the two liquid crystal panels (110a, 110b).

The double-sided liquid crystal display device module 100 may cover the entire surface where the image of the first liquid crystal panel 110a is displayed and / or the entire surface where the image of the second liquid crystal panel 110b is displayed. Like the display device module, the first and second source printed circuit boards 130a and 130b may not be bent to the back of the first case top 112a or the second case top 112b.

Hereinafter, the connection relationship between the shape of the connector and the signal cable disposed on the source printed circuit board according to the present invention will be described with reference to the drawings. The double-sided liquid crystal display device includes a first and a second source printed circuit board, first and second connectors disposed on the first and second source printed circuit boards, and first and second connectors connected to the first and second connectors. A second signal cable and first and second connector holders provided at each end of the first and second signal cables, but the connector and the connection relationship between the signal cables are the same, so that the source printed circuit board, I will refer to it as a connector, a signal cable, and a connector holder.

5 is a view schematically illustrating an example of fastening a signal cable to a source printed circuit board according to the present invention.

As shown in FIG. 5, a connector 440 is provided on the source printed circuit board 430 of the double-sided liquid crystal display module 400 according to the present invention to receive various driving signals and video signals from the outside. The 440 may be positioned to face one side edge of the source printed circuit board 430, and may be horizontally mounted on the source printed circuit board 430.

The connector 440 includes a housing 441 made of an insulator, a plurality of lead wires 442 formed at one side of the housing 441, and a connector holder 446 provided at one end of the signal cable 447. Although not shown in the drawing, the slot is formed perpendicular to the surface of the source printed circuit board 430.

The connector 440 as described above corresponds to a side entry type for allowing the signal cable 447 to be mounted parallel to the source printed circuit board 430.

On one side of the housing 441, a plurality of lead wires 442 extending to a predetermined length to the outside are densely arranged, and each of the plurality of lead wires 442 has a circuit pattern and soldering formed on the source printed circuit board 430. electrically connected by soldering).

In addition, a plurality of connection pins (not shown) are arranged inside the slot, and the plurality of connection pins are electrically connected to each other with the plurality of lead wires 442.

In order to fasten the signal cable 447 to the connector 440, a connector holder 446 is provided at one end of the signal cable 447.

Accordingly, the connector holder 446 is inserted into the slot 443 of the connector 440 in parallel with the surface of the source printed circuit board 430 so that the connector 440 and the signal cable 447 are electrically connected to each other. The signal cable 447 is fastened in parallel with the source printed circuit board 430 at one side of the source printed circuit board 430.

Here, the connector holder 446 provided at one end of the connector 440 and the signal cable 447 is used as a female connector and a male connector which can be fastened to each other. When the connector 440 is provided with a male connector, the connector holder 446 ) Is provided with a female connector, and when the female connector is provided in the connector 440, the connector holder 446 is preferably provided with a male connector.

In addition, the arrangement position of the connector 440 and the form of the connector 440 and the signal cable 447 (including the connector holder) are preferably not limited to the illustrated form.

On the other hand, when the signal cable 447 is fastened to the connector 440 on the source printed circuit board 430, the front of the first liquid crystal panel (110a in FIG. 4) or the second liquid crystal panel (110b in FIG. The double-sided liquid crystal display module 400 is erected using the supporting structure so that the source printed circuit board 430 is positioned below the double-sided liquid crystal display module 400.

The support structure includes a side support structure for supporting both sides of the double-sided liquid crystal display device module 400 and an upper support structure and a double-sided structure for fixing the double-sided liquid crystal display device module 400 on the upper side of the double-sided liquid crystal display device module 400. It may include one or more of the lower support structure for supporting the liquid crystal display module 400 from below.

Here, when defining the XYZ axis perpendicular to each other in the double-sided liquid crystal display module 400, if the long edge at the four edges of the double-sided liquid crystal display module 400 is called the X-axis, the edge perpendicular to the long edge is The Y axis is used, and the axis perpendicular to the XY plane is the Z axis.

Accordingly, a source printed circuit connected to the first liquid crystal panel (110a of FIG. 4) or the second liquid crystal panel (110b of FIG. 4) of the double-sided liquid crystal display module 400 through the connecting members (128a and 128b of FIG. 4). In the substrate 430, the long edge may be viewed as the X axis, the edge perpendicular to the long edge may be viewed as the Y axis, and the axis perpendicular to the XY plane may be viewed as the Z axis.

According to the present invention, when the side entry type connector 440 is disposed at the side edge of the surface of the source printed circuit board 430, the operator may move the signal cable 447 in the Y-axis direction parallel to the surface of the source printed circuit board 430. The signal cable 447 and the connector 440 are fastened in parallel with the surface of the source printed circuit board 430.

In this fastening method, the operator fastens the connector holder 446 of the signal cable 447 to the slot 443 while watching the slot 443 of the connector 440 disposed at one side edge of the source printed circuit board 430. This speeds up the work, which is advantageous for mass production.

If the side entry type connector is disposed at the lower edge of the source printed circuit board surface as in the conventional liquid crystal display module, the operator moves the signal cable in the X direction parallel to the surface of the source printed circuit board so that the source printed circuit board ( It is possible to fasten the signal cable 447 and the connector 440 in parallel with the surface 430.

In this method of fastening, it is difficult for an operator to see the slot of the connector disposed at the lower edge of the source printed circuit board, so when the connector holder of the signal cable is fastened to the slot of the connector, the connector of the connector is checked and the signal cable is fastened. You have a problem. This increases work time and decreases work efficiency.

Also, in the case of the lower support structure, if the side entry type connector is disposed at the lower edge of the source printed circuit board surface as in the conventional liquid crystal display device module, the signal cable must be fastened to the connector under the source printed circuit board. The central area of the support structure shall be drilled. That is, under the lower support structure, the signal cable passes through the perforated area of the lower support structure so that the signal cable is engaged with the connector of the source printed circuit board.

However, in the double-sided liquid crystal display module according to the present invention, since the signal cable 447 is fastened at the side of the surface of the source printed circuit board 400, the lower support structure is simply a flat rectangular support plate, so It has the advantage of simplicity in form.

Meanwhile, the connector according to the present invention is disposed at the side edge of the surface of the source printed circuit board 430, and is used as a top entry type so that the signal cable 447 moves perpendicularly to the surface of the source printed circuit board 430. The signal cable 447 may be vertically mounted on the surface of the source printed circuit board 430 by being fastened to the substrate. Such a top entry type connector will be described in detail below.

6 is a view schematically illustrating another example of fastening a signal cable to a source printed circuit board according to the present invention.

As shown in FIG. 6, a connector 540 for receiving various driving signals and video signals from the outside is disposed on the source printed circuit board 530 of the double-sided liquid crystal display module 500. It is positioned to face the lower edge of the source printed circuit board 530, it is positioned so as to be mounted perpendicular to the source printed circuit board 530.

The connector 540 includes a housing 541 made of an insulator, a plurality of lead wires 542 formed at one side of the housing 541, and a connector holder 546 provided at one end of the signal cable 547. The slot 543 is formed horizontally with the surface of the source printed circuit board 540.

The connector 540 as described above corresponds to a top entry type that allows the signal cable 547 to be mounted perpendicular to the surface of the source printed circuit board 530.

On one side of the housing 541, a plurality of lead wires 542 extending to a predetermined length to the outside are densely arranged, and each of the plurality of lead wires 542 has a circuit pattern and soldering formed on the source printed circuit board 530. electrically connected by soldering).

A plurality of connection pins 544 are arranged inside the slot 543, and the plurality of connection pins 544 are electrically connected to the plurality of lead wires 542 in correspondence with each other.

In order to fasten the signal cable 547 to the connector 540, a connector holder 546 is provided at one end of the signal cable 547.

Accordingly, the connector holder 546 is inserted into the slot 543 of the connector 540 perpendicularly to the surface of the source printed circuit board 530 so that the connector 540 and the signal cable 547 are electrically connected. The signal cable 547 is fastened perpendicularly to the surface of the source printed circuit board 530 at the bottom of the surface of the source printed circuit board 530.

Here, the connector holder 546 provided at one end of the connector 540 and the signal cable 547 is used as a female connector and a male connector which can be fastened to each other. When the connector 540 is provided with a male connector, the connector holder 546 ) Is provided with a female connector, and when the female connector is provided in the connector 540, the connector holder 546 is preferably provided with a male connector.

In addition, the position of the connector 540 and the form of the connector 540 and the signal cable 547 (including the connector holder) are preferably not limited to the illustrated form.

On the other hand, when the signal cable 547 is fastened to the connector 540 on the source printed circuit board 530, the front of the first liquid crystal panel (110a in FIG. 4) or the second liquid crystal panel (110b in FIG. The double-sided liquid crystal display module 500 is erected using the support structure so that the source printed circuit board 530 is positioned below the double-sided liquid crystal display module 500.

The support structure includes a side support structure for supporting both sides of the double-sided liquid crystal display module 500 and an upper support structure and a double-sided structure for fixing the double-sided liquid crystal display module 500 on the upper side of the double-sided liquid crystal display module 500. It may include one or more of the lower support structure for supporting the liquid crystal display module 500.

Here, when defining the XYZ axis perpendicular to each other in the double-sided liquid crystal display module 500, if the long edge at the four edges of the double-sided liquid crystal display module 500 is called the X-axis, the edge perpendicular to the long edge is The Y axis is used, and the axis perpendicular to the XY plane is the Z axis.

Accordingly, a source printed circuit connected to the first liquid crystal panel (110a of FIG. 4) or the second liquid crystal panel (110b of FIG. 4) of the double-sided liquid crystal display module 500 through the connecting members (128a and 128b of FIG. 4). In the substrate 530, the long edge may be viewed as the X axis, the edge perpendicular to the long edge may be viewed as the Y axis, and the axis perpendicular to the XY plane may be viewed as the Z axis.

In the present invention, the connector 540 is disposed at the lower edge of the surface of the source printed circuit board 530, and the operator uses the top entry type disposed vertically to the surface of the source printed circuit board 530. Move to the Z-axis direction perpendicular to the surface of the source printed circuit board 530 to fasten the signal cable 547 and the connector 540 perpendicular to the surface of the source printed circuit board 530.

That is, the operator fastens the connector holder 446 of the signal cable 547 to the slot 543 while looking at the slot 543 of the top entry type connector 540, thereby improving work efficiency.

In addition, in the double-sided liquid crystal display module according to the present invention, since the signal cable 547 is moved in the Z direction perpendicular to the surface of the source printed circuit board 530 at the front of the operator and fastened to the connector 540, the conventional liquid crystal Unlike the lower support structure of the display device module, the central predetermined area of the lower support structure does not need to be drilled.

As a result, the double-sided liquid crystal display module according to the present invention has the advantage that the shape of the lower support structure is simplified to a flat rectangular shape, and the operator is a top entry type connector disposed on the lower edge of the surface of the source printed circuit board 530. While looking at 540, the connector holder 546 provided at one end of the signal cable 547 can be fastened to the slot 543 of the connector 540, thereby improving the working speed, which is advantageous for mass production.

FIG. 7 is a front view illustrating a bezel width of the double-sided liquid crystal display of FIG. 6.

After fastening the signal cable (547 in FIG. 6) to the double-sided liquid crystal display module (500 in FIG. 6), the system board and speakers are coupled to the double-sided liquid crystal display module (500 in FIG. 6) for the work of the finished product. A double-sided liquid crystal display device is manufactured by attaching a packaging case 600 that surrounds the edges of four edges of the first liquid crystal panel 110a for displaying a moving image. The packaging case 600 may include a bezel having a predetermined width, and the bezel may include upper, lower, left and right sides.

In this case, in the present invention, the top entry type connector 540 of FIG. 6 is disposed on the source printed circuit board 530 of FIG. 6 so that the signal cable 547 of FIG. 6 is connected to the source printed circuit board 530 of FIG. Since it is fastened to the connector (540 of FIG. 6) by moving perpendicular to the surface, it is possible to reduce the width of the lower bezel occupied by the signal cable (547 of FIG. 6).

In more detail, if the side entry type connector is disposed on the lower edge of the source printed circuit board as in the conventional liquid crystal display module, the double-sided liquid crystal display is fastened not only to the source printed circuit board but also to the source printed circuit board in parallel. In order to cover the connector holder of the signal cable, the width of the lower bezel must be widened by d1 as shown in FIG. 7.

As such, when the width of the lower bezel of the double-sided liquid crystal display becomes d1, the overall size becomes too large, and the area occupied by the lower bezel becomes too large compared to the area occupied by the upper or side bezels.

However, according to the present invention, the connector holder 546 of the signal cable 547 moves to a slot 543 of the top entry type connector 540 in a direction perpendicular to the surface of the source printed circuit board 530 to be fastened. Therefore, in the double-sided liquid crystal display according to the present invention, at least the width occupied by the connector holder can be reduced, so that the width of the lower bezel becomes d2 as shown in FIG. 7.

As a result, according to the present invention, it is possible to reduce the unit cost by simplifying the parts (support structure) necessary for the process operation while improving the process operation efficiency, and to provide a double-sided liquid crystal display device with a beautiful appearance by minimizing the width of the bezel. You can do it.

The present invention is not limited to the above embodiments, and various modifications can be made without departing from the spirit of the present invention.

430, 530: source printed circuit board
440, 540: connector 446, 546: connector holder
447, 547: signal cable 600: bezel

Claims (7)

A double-sided backlight unit emitting light to a first surface and a second surface opposite to the first surface;
A first liquid crystal panel configured on the first surface of the double-sided backlight unit;
A second liquid crystal panel configured on a second surface of the double-sided backlight unit;
A support main bordering edges of the double-sided backlight unit and the first and second liquid crystal panels;
First and second case tops coupled to the support main and bordering edges of the first and second liquid crystal panels, respectively;
Located along one edge of the first and second liquid crystal panel, and includes first and second source printed circuit board for providing a data drive signal to the first and second liquid crystal panel,
And a first connector and a second connector mounted perpendicularly to each of the planes of the first and second source printed circuit boards to transmit signals from an external body.
The method of claim 1,
The first and second connectors may be formed to face the edges of the first and second source printed circuit boards connected to the first and second liquid crystal panels so as to face outwards of the opposite edges. Display.
The method of claim 1,
And first and second signal cables connected to the external main body are inserted and fixed perpendicularly to the first and second source printed circuit board surfaces through the first and second connectors.
The method of claim 1,
The support main body comprises a first and a second support main, characterized in that the liquid crystal display device.
A double-sided backlight unit emitting light to a first surface and a second surface opposite to the first surface;
A first liquid crystal panel configured on the first surface of the double-sided backlight unit;
A second liquid crystal panel configured on a second surface of the double-sided backlight unit;
A support main bordering edges of the double-sided backlight unit and the first and second liquid crystal panels;
First and second case tops coupled to the support main and bordering edges of the first and second liquid crystal panels, respectively;
Located along one edge of the first and second liquid crystal panel, and includes first and second source printed circuit board for providing a data drive signal to the first and second liquid crystal panel,
First and second horizontally mounted on each of the plane of the first and second source printed circuit board, respectively positioned on one side of the plane of the first and second source printed circuit board to transmit a signal from an external body Double-sided liquid crystal display including a connector.
The method of claim 5, wherein
On one side of the planar side of the first and second source printed circuit boards, the first and second signal cables connected to the external body are connected to the first and second source printed circuit boards through the first and second connectors. A double-sided liquid crystal display device, characterized in that the horizontal insertion and fixed to the plane, respectively.
6. The method of claim 5,
The support main body comprises a first and a second support main, characterized in that the liquid crystal display device.

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