KR20010035875A - Liquid crystal display module and liquid crystal display device using the same - Google Patents

Abstract

PURPOSE: A liquid crystal display using a liquid crystal display module is provided, which can make the liquid crystal display module be assembled and dissembled easily without using a connection member such as a screw. CONSTITUTION: The liquid crystal display using a liquid crystal display module comprises: at least one hole(610,620) formed at the side of a chassis(600); a dent(551) formed at the side of a mold frame(550); a first projection protruding from the bottom of a case(310) and being inserted into the dent(551) and hooked to the first hole(610); and a second projection hooked to the second hole(620) from the outside of the chassis(600).

Description

Liquid crystal display module and liquid crystal display device using the same

The present invention relates to a liquid crystal display module and a liquid crystal display device using the same, and more particularly, to form at least two or more through holes to have a predetermined interval in the chassis of the liquid crystal display module, and at any position of the through holes. The mold frame is provided with a space between the through hole and the mold frame in the corresponding mold frame. Then, the bottom surface of the case in which the liquid crystal display module is mounted is engaged in the inward direction of the through hole from the outside of the chassis of the liquid crystal display module. A liquid crystal display module and a liquid crystal display device using the same, wherein the liquid crystal display module is firmly coupled to the case through the coupling protrusions and the coupling protrusions inserted into the mounting grooves of the liquid crystal display module and engaged in the chassis outward direction from the inside of the through hole of the chassis. It is about.

The liquid crystal display module injects a liquid crystal having a property of varying light transmittance by an electric field between two transparent substrates, and a predetermined power source is applied to the entire area of any one of the transparent substrates on which the liquid crystal is interposed. And the other one of the transparent substrates is selectively applied to each of the divided regions while being divided into a myriad of regions.

In this case, when the electric field is formed between the two transparent substrates, the arrangement of the liquid crystal is changed by the direction and size of the electric field. As the arrangement of the liquid crystals is changed, the light transmittance of the light passing through the liquid crystal layer is also changed. It is also changed.

When the light source is placed in the state where the liquid crystal can transmit light as described above, a light source is positioned below the lower transparent substrate and a color filter is attached to the upper transparent substrate to express a predetermined color by light. The light generated by the color is generated through the lower transparent substrate-the liquid crystal layer-the upper transparent substrate-the color filter.

The liquid crystal display module expresses such a phenomenon very finely and exquisitely, and displays the electrical form information to be displayed as image information that a user can recognize.

The liquid crystal display module is accommodated in a case again to become a liquid crystal display device, which is one of the display devices. The liquid crystal display device is significantly reduced in weight compared to the conventional CRT (Cathode Ray Tube) display device having the same effective display size. And since it has a significantly reduced volume, in recent years the development of a liquid crystal display device having a higher resolution and reduced weight while reducing the total volume has been in progress.

In order to realize this, there is a need for a technology for manufacturing a liquid crystal display device by mounting a liquid crystal display module in a case together with a technology for manufacturing the overall size of the liquid crystal display module to be light and small.

For example, even if the liquid crystal display module is manufactured in a light weight and small size, when the method of mounting the liquid crystal display module and the case is shown in FIG. 1, the overall size of the liquid crystal display device is much larger than the actual liquid crystal display module. .

FIG. 1 illustrates an example in which a conventional liquid crystal display module 100 is mounted on a case 200 including a rear case 120 and a front case 110. A protrusion 10 protruding a predetermined length is formed, and a fastening hole 12 is formed in the protrusion 10 to be coupled to the rear case 120, and a screw 14 is provided in the rear case 120 through the fastening hole 12. ) Is formed a boss (not shown) is formed with a female screw portion (not shown).

However, when implementing the liquid crystal display device 300 by combining the liquid crystal display module 100 and the case 200 as described above, the protrusion 10 of the liquid crystal display module 100 by the length of W shown in FIG. That is, an increase in the length of the cases 110 and 120 by the length of the protrusion 10 protrudes inevitably occurs, which results in greatly increasing the overall size of the liquid crystal display 300 as mentioned above.

In addition, by fastening the liquid crystal display module 100 and the case 200 using at least one or more screws 14, the number of assembly parts may be increased and the number of assembly processes may be increased.

Accordingly, the present invention has been made in view of such a conventional problem, and an object of the present invention is to use a liquid crystal display without using a separate mounting member that increases the number of assembly parts and the number of assembly processes such as screws while using the bottom surface of the case. In order to minimize the area difference between the area of the module and the area of the rear case.

Other objects of the present invention will become more apparent from the following detailed description of the invention.

1 is a partially exploded perspective view showing the structure of a conventional liquid crystal display module and the case.

2 is an exploded perspective view of a liquid crystal display device according to the present invention;

3 is an exploded perspective view of a liquid crystal display panel according to the present invention.

4 is an exploded perspective view for explaining a combination of a liquid crystal display module and a case;

5 is a perspective view of a rear case according to the present invention;

FIG. 6 is an enlarged view of the A circle in FIG. 5; FIG.

7 is a partial cutaway perspective view illustrating a coupling relationship between a liquid crystal display module and a rear case according to the present invention;

The liquid crystal display module according to the present invention for achieving the object of the present invention is a lamp unit for generating light, a light guide plate for guiding the light and at the same time changing the course of the light, a diffusion sheet for uniforming the brightness of the light emitted from the light guide plate And a backlight assembly including a reflection plate for regenerating light leaked from the light guide plate, a mold frame for accommodating them, and a backlight assembly having a uniform luminance, and a plurality of zones divided in a matrix form. A display unit in which the light transmittance of the liquid crystal is changed so that light is input and blocked from the backlight assembly so that the input light stimulates a color pixel so that a predetermined color is expressed, and an invalid display area of the display unit and the mold frame A chassis that is joined to surround the side, the chassis At least one first and second through hole is formed at a side surface, and a mounting groove is formed at a side of the mold frame facing the inner surface of the first through hole so as to expose the first through hole starting from the bottom of the mold frame. The first coupling means protruding from the bottom surface is inserted into the mounting groove to be engaged with the first through hole, and the second coupling means protruding from the bottom of the case is engaged with the second through hole from the outside of the chassis. .

In addition, the first coupling means, the second coupling means for realizing the object of the present invention is projected to a predetermined height from the bottom surface of the case, the end is coupled to the side projection is seated on the cutting surface of the first and second through holes Have protrusions

In addition, the liquid crystal display device according to the present invention for achieving the object of the present invention accommodates a display unit for displaying an image by driving the liquid crystal, a backlight assembly for supplying light to the display unit, a display unit and the backlight assembly At least one first through-hole is formed so that the mounting groove is formed in communication with the side and the bottom surface, and the mounting groove is exposed to the outside in a bracket shape that couples the storage container and the display unit to the outside, A liquid crystal display module including a chassis in which at least one second through hole is formed to expose a side surface of the storage container in a portion other than the mounting groove, and first coupling means inserted into the mounting groove to be engaged with the first through hole. The second coupling means which is engaged in the second through hole from the outside of the chassis is formed on the bottom surface While the effective display region of the control case, the display unit so as to be exposed to the outside and a case consisting of a front case and a rear case coupled.

Further, in order to realize the object of the present invention, the first coupling means and the second coupling means preferably protrude to a predetermined height from the bottom surface of the case, and end portions protruding from the end surfaces of the first and second through holes. Is formed.

Optionally, the first and second coupling means are alternately formed, and the side protrusions of the first second coupling means are in close contact with the inner and outer surfaces of the chassis.

Hereinafter, the liquid crystal display module and the liquid crystal display device according to the present invention will be described in more detail with reference to the accompanying drawings.

2 is an exploded view of all the components of the liquid crystal display according to the present invention.

The liquid crystal display 801 is divided into a liquid crystal display module 800 and a case 300 as a whole.

The case 300 is composed of the rear case 310 and the front case 320, and the liquid crystal display module 800 is composed of the display unit 400, the backlight assembly 500, and the chassis 600.

The display unit 400 will be described with reference to FIG. 3 as follows.

The display unit 400 is composed of a liquid crystal display panel 410, a tape carrier package 420, and a driving printed circuit board 460.

The liquid crystal display panel 410 includes a TFT substrate 450, a liquid crystal 440, and a color filter substrate 430.

The TFT substrate 450 is a transparent substrate, and on the TFT substrate 450, tens to millions of semiconductor thin film transistors (not shown) are formed in a matrix shape by a semiconductor thin film process, and each thin film transistor is a row unit. It should be formed to enable turn-on and turn-off.

In addition, the data lines 451 are connected to the source terminals of all the thin film transistors by the semiconductor thin film process so that the semiconductor thin film transistors are turned on and off in units of columns while the semiconductor thin film transistors are arranged in a matrix form. The gate line 452 is connected to the gate terminal, and the transparent pixel electrode (not shown) is connected to the drain terminal.

Accordingly, when the turn-on signal is applied to the arbitrary gate line 452 and the data line 451, the thin film transistor is turned on and a predetermined voltage is applied to the pixel electrode.

On the other hand, the color filter substrate 430 is opposed to the TFT substrate 450 and the common electrode (not shown) so that a predetermined power is applied over the entire area of the color filter substrate 430, which is transparent to RGB pixels expressing a predetermined color by light stimulation. O) is formed.

This structure allows a predetermined electric field to be formed between the pixel electrode and the common electrode of the color filter substrate 430 while the predetermined thin film transistor formed on the TFT substrate 450 is turned on.

As such, between the TFT substrate 450 and the color filter substrate 430 to allow light to pass through or block the color filter substrate 430 from the TFT substrate 450 using an electric field formed between the pixel electrode and the common electrode. The liquid crystal 440 in which light transmittance is changed by an electric field is injected into the liquid crystal.

This means that the amount of light passing through the color filter substrate 430 from the TFT substrate 450 is adjusted when an electric field is applied to the liquid crystal 440.

Furthermore, when the turn-on and turn-off of the thin film transistor formed on the TFT substrate 450 are adjusted very appropriately, it means that the display of a precise image is possible by the color expressed through the color filter substrate 430.

At this time, in order to control the light transmittance of the liquid crystal 440 positioned between each pixel electrode and the common electrode, it is necessary to control the intensity and signal application timing of the driving signal applied to the data line 451 and the gate line 452.

To this end, the tape carrier package 420 is connected to the data line and the gate line so that the drive signal is applied to the data line 451 and the gate line 452 at an appropriate timing, and the tape carrier is connected to the data line and the gate line. The driving printed circuit board 460 is connected to the package 420 to configure the display unit 400.

However, since the liquid crystal is a non-light emitting element, even if the display unit 400 is driven, the image is not displayed without the light source.

For this reason, a light source is essential under the display unit 400. The light source used in the liquid crystal display device must satisfy a uniform and high luminance condition even in a large area.

Since most of the light sources are point light sources or linear light sources, luminance concentration is inevitable, and thus, a backlight assembly 500 is required to satisfy uniform brightness conditions.

The backlight assembly 500 generally includes a lamp unit 510, a light guide plate 520, a reflecting plate 530, a diffusion sheet 540, and a mold frame 550.

The lamp unit 510 may further include a cold cathode ray tube type lamp 515 and a lamp cover 517 for advancing the light generated from the lamp 515 in one direction.

The light guide plate 520 has a wedge shape or a flat rectangular parallelepiped shape in which the direction of the light emitted from the lamp cover 517 is changed toward the display unit 400 described above, and the luminance is uniformly primarily.

The reflective plate 530 is formed of a thin material having excellent light reflectivity and is positioned on the bottom surface of the light guide plate 520 to re-inject the leaked light leaked from the light guide plate 520 into the light guide plate 520.

At least three diffusion sheets 540 scatter light before the light enters the display unit 400 from the light guide plate 520 and enter the display unit 400 at a more uniform luminance. Be sure to

The lamp unit 510, the light guiding plate 520, the reflecting plate 530, and the diffusion sheets 540, which play such a role, are accommodated in the internal space of the mold frame 550, and then the mold frame 550 has the display described above. Unit 400 is seated.

The mold frame 550 has a unique structure for minimizing the planar area of the liquid crystal display module 800 and the planar area of the case 300 when the liquid crystal display module 800 is mounted on the case 300.

The shape and structure of the mold frame 550 will be described in detail with reference to FIG. 4.

The mold frame 550 has a shape in which an upper surface is opened and a space is formed to accommodate the components of the backlight assembly 500 described above, and more specifically, four sidewalls having a predetermined height and one side wall connected to the four sidewalls. It is a shape having a bottom surface.

In an embodiment, at least one or more grooves having a height and a predetermined depth equal to the height of the sidewall may be provided on the outer surface of the two sidewalls facing each other among the four sidewalls of the mold frame 500 having such a shape. It is formed to have.

Hereinafter, this groove will be defined as a liquid crystal display module mounting groove 551, and the liquid crystal display module mounting groove 551 is mounted on the case 300 when the liquid crystal display module 800 is mounted on the case 300. As it overlaps with the means, it serves to reduce the area of the case 300. More specifically, the case 300 and the coupling relationship between the case 300 and the liquid crystal display module 800 will be described in more detail. Let's explain.

As such, the remaining components of the backlight assembly 500 and the display unit 400 are seated in the mold frame 550 having the liquid crystal display module mounting groove 551.

However, to prevent external detachment of components of the display unit 400 and the backlight assembly 500 seated on the mold frame 550 and to protect the liquid crystal display panel 430 of the display unit 400 which is fragile from external impact. The chassis 600 is coupled to the mold frame 550.

In order for the chassis 600 to play such a role, the chassis 600 is pressed against the invalid display area except for the effective display area of the display unit 400 and coupled with the four side outer sides of the mold frame 550. The overall shape has a rectangular frame shape as shown in FIG. 4 and the cross section has a cramped shape of ″ a ″ shape.

When the chassis 600 is coupled to the side of the mold frame 550 seated up to the display unit 400, the chassis 600 corresponds to the liquid crystal display module mounting groove 551 formed on the outer side of the mold frame 550 in the chassis 600. The first through hole 610 is formed by cutting a predetermined area with a press machine or the like so that the liquid crystal display module mounting groove 551 is exposed to the outside.

In this case, in forming the first through hole 610, a portion of the chassis 600 may be cut and then bent into the chassis 600, or the first through hole 610 may be formed.

In addition, at least one second through hole 620 is formed in the chassis 600 adjacent to the first through hole 610.

At this time, the second through hole 620 is similar to the first through hole 610 in one embodiment and can be manufactured by the same method as the method of manufacturing the first through hole 610.

The liquid crystal display module 800 having the above configuration is combined with the case 300 to be manufactured as the liquid crystal display device 801.

As shown in FIG. 1 or FIG. 5, the case 300 is composed of a rear case 310 and a front case 320.

Referring to FIG. 5, the rear case 310 is mainly made of a magnesium alloy material for efficient removal of static electricity, and is formed of four sidewalls and one bottom having a predetermined height to form a storage space therein.

The plurality of coupling protrusions 312 and 314 having a number corresponding to the positions of the first and second through holes 610 and 620 formed in the chassis 600 of the liquid crystal display module 800 are formed on the bottom surface of the rear case 310 formed as described above. Is formed or installed protruding.

Referring to the attachment protrusions in more detail with reference to FIG. 6, the coupling protrusions 312 and 314 protrude to a predetermined height from a bottom surface in a rectangular parallelepiped shape in one embodiment and have a snap fit (snap fit) shape from one side. 312a and 314a have a protruding shape.

In this case, the coupling protrusion coupled to the first coupling hole 610 of the chassis 600 among the coupling protrusions 312 and 314 is defined as the first coupling protrusion 312, and the coupling protrusion coupled to the second through hole 620. A second coupling protrusion 314 will be defined.

The position of the first coupling protrusion 312 is inserted into the space between the chassis 600 and the liquid crystal display module mounting groove 551, as shown in Figure 4 of the bottom of the rear case 310, the first coupling protrusion The locking jaw 312a of the 312 is installed or formed at a position protruding from the inside of the first through hole 610 of the chassis 600 to be coupled to the chassis 600.

The position of the second coupling protrusion 314 is in close contact with the outer side of the side of the chassis 600, as shown in Figure 6 of the bottom of the rear case 310, the locking projection 314a of the second coupling protrusion 314 is It is installed or formed at the position caught by the second through hole 620 of 600.

Looking at the position of the first coupling protrusion 312 and the second coupling protrusion 314 in more detail when the thickness of the chassis 600 is defined as W, the engaging piece 312a of the first coupling protrusion 312 is the chassis A second protruding portion of the chassis 600 protrudes outward from the chassis 600 through the first through hole 610 formed on the sidewall of the 600, and the engaging piece 314a of the second coupling protrusion 314 is formed on the sidewall of the chassis 600. The through hole 620 is caught.

The first and second coupling protrusions 312 and 314 are coupled to the chassis 600 at the inside and the outside of the chassis 600 based on the chassis 600 so that the position change of the chassis 600 is vertically and horizontally changed at the designated position. Prevent it from happening.

In particular, the first coupling protrusion 312 coupled to the chassis 600 inside the chassis 600 greatly enhances the coupling force between the second coupling protrusion 314 and the chassis 600, as well as the second coupling force. Since the coupling protrusion 314 can be made small, the area difference between the liquid crystal display module 800 and the rear case 310 can be minimized.

As described above, the liquid crystal display module coupled to the rear case 310 may firmly couple the liquid crystal display module 800 to the rear case 310 by one assembly process, and of course, the rear case by one disassembly process. 310 and the liquid crystal display module 800 may be disassembled.

In order to disassemble the rear case 310 and the liquid crystal display module 800, as shown in FIG. 2, a removal through hole 630 and a removal through hole 630 correspond to corner portions of the chassis 600. After the groove 553 having a predetermined depth is formed in the mold frame 550, a screwdriver or a specially manufactured tool is inserted into the removal hole 630 of the chassis 600, and then the chassis 600 is formed into a mold frame ( Decomposition is simply performed by separating the second coupling protrusion 314 from the chassis 600 and separating the first coupling protrusion 312 from the chassis 600 while being slightly spaced apart from the 550.

As described in detail above, the rear case and the liquid crystal display module can be assembled by one assembly process, but the assembly process and disassembly process are minimized by using no coupling member such as screws, and the liquid crystal display module is very robust. There is an effect that can be combined with the rear case.

Claims (6)

A lamp unit for generating light, a light guide plate for guiding the light and changing the course of the light, a diffusion sheet for uniforming the luminance of the light emitted from the light guide plate, a reflection plate for reproducing the light leaked from the light guide plate, and a mold for housing them A backlight assembly including a frame such that a predetermined area has a uniform brightness; The electric field is selectively formed in a plurality of zones divided into a matrix, and the light transmittance of the liquid crystal is changed by the electric field so that light is input and blocked from the backlight assembly. A display unit configured to be expressed; A chassis coupled to surround an invalid display area of the display unit and a side surface of the mold frame, At least one first and second through hole is formed at a side surface of the chassis, and the first through hole is exposed at a side surface of the mold frame facing the inner side surface of the first through hole, starting from a bottom surface of the mold frame. A mounting groove is formed so that the first coupling means protruding from the bottom surface of the case is inserted into the mounting groove so as to be engaged with the first through hole, and the second coupling means protruding from the bottom of the case is located outside the chassis. A liquid crystal display module which is engaged with the second through hole. According to claim 1, wherein the first coupling means, the second coupling means is projected to a predetermined height from the bottom surface of the case, the end portion is coupled to the side projection is seated on the cutting surface of the first and second through holes Liquid crystal display module that is a projection. A storage container including a display unit for displaying an image by driving a liquid crystal, a backlight assembly for supplying light to the display unit, and a mounting groove accommodating the display unit and the backlight assembly and communicating side and bottom surfaces thereof; At least one first through-hole is formed in a bracket shape for coupling the storage container and the display unit to the mounting groove to be exposed to the outside in a position opposite to the mounting groove, the portion of the storage container in the portion other than the mounting groove A liquid crystal display module including a chassis in which at least one second through hole is formed to expose side surfaces thereof; A rear case having a first coupling means inserted into the mounting groove and engaged with the first through hole, a second coupling means with a second coupling hole engaged with the second through hole at an outside of the chassis; And a case consisting of a front case coupled to the rear case while allowing the effective display area of the unit to be exposed to the outside. According to claim 3, wherein the first coupling means, the second coupling means is projected to a predetermined height from the bottom surface of the case, the end portion is coupled to the side projection is seated on the cutting surface of the first and second through holes Liquid crystal display device that is a projection. 4. The liquid crystal display device according to claim 3, wherein the first and second coupling means are alternately formed. 6. The liquid crystal display of claim 5, wherein the side protrusions of the first second coupling means are in close contact with inner and outer surfaces of the chassis, respectively.