KR20130087341A - Flat panel display device and manufacturing method thereof - Google Patents

Abstract

PURPOSE: Flat panel display device and manufacturing method thereof are provided to reduce the entire size of a display device while providing a screen with a predetermined size by minimizing the width of a bezel. CONSTITUTION: A lower sash (100) has a lower plate, a lower side wall, a first hook and a second hook. A mold frame (300) has a first protrusion unit having a guide hole inside, a second protrusion unit having a notch unit and is engaged and fixed to the lower sash. A display panel is mounted on an upper part of the mold frame. An upper sash (500) includes a bezel unit a side wall downwardly perpendicularly extended from the bezel unit. The upper sash includes a first engagement hole and a second engagement hole to the side wall and is engaged to the lower sash and mold frame in the upper part of the liquid crystal display panel.

Description

Flat Panel Display and Manufacturing Method Thereof {FLAT PANEL DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat panel display, and more particularly, to a flat panel display and a method of manufacturing the same which can reduce the bezel size of the flat panel display.

Information processing devices are rapidly evolving to have various functions and faster information processing speed. Information having an electrical signal form processed by such an information processing apparatus requires an image display apparatus serving as an interface for displaying.

Recently, as a video display device, a flat panel display device capable of slimming and weight reduction has been mainly developed. Such flat panel displays include liquid crystal displays (LCDs), organic light emitting displays (OLEDs), plasma displays (Plasma Display Panels, PDPs), field effect displays (Field Effect Displays, FED), an electrophoretic display (EPD), an electrowetting display (EWD), and the like.

Such a flat panel display device is used in a wide range of information display devices, and may be classified into a small flat panel display device used for a mobile phone, a medium sized flat display device used for a desktop monitor, and a large flat display device used for a television, depending on its size. .

Among them, the liquid crystal display device will be described as an example. The liquid crystal display device is a liquid crystal panel in which images are represented by changes in the arrangement of liquid crystal molecules and light transmission according to electrical signals provided, and a backlight for supplying light to the liquid crystal panel. And an upper chassis and an upper chassis for supporting and fixing the assembly and the liquid crystal panel and the backlight assembly. The upper chassis has an opening in the center thereof to expose the liquid crystal panel to the outside and to surround the edge of the liquid crystal panel. As such, a portion of the upper chassis of the liquid crystal display surrounding the edge of the liquid crystal panel is called a bezel.

As the width of the bezel increases, the overall size of the liquid crystal display device which provides a constant size screen increases. Therefore, in order to reduce the size of the entire LCD while providing a screen having a desired size, a structure capable of reducing the width of the bezel is required.

SUMMARY OF THE INVENTION An object of the present invention is to provide a flat panel display and a method of manufacturing the same which can reduce the width of a bezel in the flat panel display.

SUMMARY OF THE INVENTION An object of the present invention is to provide a flat panel display device having a rigid fastening structure between upper and lower chassis and a mold frame in a flat panel display device and a method of manufacturing the same.

Another object of the present invention is to provide a flat panel display and a method of manufacturing the same which can reduce the manufacturing cost and processing time of the flat panel display.

According to an aspect of the present invention, there is provided a flat panel display device including: a backlight assembly; A lower chassis having a lower plate, a lower sidewall bent from the lower plate, a first hook and a second hook protruding outwardly from the lower sidewall, and containing the backlight assembly; A mold frame which protrudes in the first direction and has a guide hole formed therein and a second protrusion which protrudes in the first direction and has guide grooves formed therein and is fixedly coupled to the lower chassis at an upper portion of the backlight assembly; ; A liquid crystal panel seated on the mold frame; And a bezel portion having a center opening and a sidewall bent from the bezel portion and extending from the bezel portion, wherein the sidewall includes a first fastening hole formed at a position corresponding to the first protrusion and a position corresponding to the second protrusion. And a fastening hole formed at an upper part of the upper chassis, the upper chassis being coupled to and fixed to the lower chassis and the mold frame at an upper portion of the liquid crystal panel, wherein the first protrusion is inserted into the first fastening hole of the upper chassis, The first hook of the chassis is fixed in the through hole of the first protrusion of the mold frame, the second protrusion is inserted into the second fastening hole of the upper chassis, and the second hook of the lower chassis is formed of the first frame of the mold frame. 2 is characterized in that it is fixed in the guide groove of the protrusion and the second fastening hole of the upper chassis.

The first hook, the first protrusion, and the first fastening hole may be coplanar.

In addition, the second hook, the second protrusion, and the second fastening hole may be located on the same plane.

In addition, an upper end of the side wall of the lower chassis may contact the mold frame, and an upper end of the side wall of the mold frame may contact the upper chassis.

In addition, the mold frame further includes a support portion formed to extend from a lower surface of the base portion, and the side wall of the lower chassis may be inserted between the first protrusion and the support portion.

In addition, the mold frame further includes a support portion formed to extend from a lower surface of the base portion, and the side wall of the lower chassis may be inserted between the second protrusion and the support portion.

In addition, the side wall of the lower chassis and the side wall of the mold frame may be located on the same plane.

In addition, the mold frame may include a plurality of first protrusions and a plurality of second protrusions, and the first protrusions and the second protrusions may be alternately arranged.

In addition, the lower chassis and the upper chassis are formed of a metal material, the mold frame may be formed of a synthetic resin.

In addition, a flat panel display device according to another embodiment of the present invention for solving the above technical problem, the backlight assembly; A lower chassis having a lower plate, a lower sidewall bent from the lower plate, and a first hook protruding outwardly from the lower sidewall, the lower chassis receiving the backlight assembly; A mold frame which protrudes in the outward direction and has a first protrusion formed therein and is fixedly coupled to the lower chassis at an upper portion of the backlight assembly; A liquid crystal panel seated on the mold frame; And a bezel portion having a center opening and a sidewall bent from the bezel portion and extending from the bezel portion, wherein the first fastening hole is formed at a position corresponding to the first protrusion, and the lower portion of the upper portion of the liquid crystal panel is formed. And an upper chassis coupled to and fixed to the chassis and the mold frame, wherein the first protrusion is inserted into a first fastening hole of the upper chassis.

In addition, a flat panel display device according to another embodiment of the present invention for solving the above technical problem, the backlight assembly; A lower chassis having a lower plate, a lower sidewall bent and extending from the lower plate, and a second hook formed to protrude outwardly from the lower sidewall; A mold frame protruding in the outward direction and having a second protrusion formed with a guide groove, the mold frame being fixedly coupled to the lower chassis at an upper portion of the backlight assembly; A liquid crystal panel seated on the mold frame; And a bezel portion having a center opening and an upper sidewall bent from the bezel portion and extending from the bezel portion, and a second fastening hole formed at a position corresponding to the second protrusion is formed at the upper sidewall, And an upper chassis coupled to and fixed to the lower chassis and the mold frame, wherein the second protrusion is inserted into a second fastening hole of the upper chassis, and the second hook of the lower chassis is a second protrusion of the mold frame. It is characterized in that the guide groove and the second fastening hole of the upper chassis.

In addition, a flat panel display device according to another embodiment of the present invention for solving the above technical problem, the backlight assembly; A lower chassis having a lower plate, a lower sidewall bent from the lower plate, a first hook and a second hook protruding outwardly from the lower sidewall, and containing the backlight assembly; A mold frame which protrudes in the first direction and has a first protrusion having a guide hole formed therein and is fixedly coupled to the lower chassis at an upper portion of the backlight assembly; A liquid crystal panel seated on the mold frame; And a bezel portion having a center opening and a sidewall bent and extending from the bezel portion, wherein the sidewall includes a first fastening hole formed at a position corresponding to the first protrusion and a second fastening formed parallel to the second protrusion. A hole is formed and an upper chassis coupled to the lower chassis and the mold frame at an upper portion of the liquid crystal panel, wherein the first protrusion is inserted into a first fastening hole of the upper chassis, The first hook is fixed in the through hole of the first protrusion of the mold frame, and the second protrusion is fixed in the second fastening hole of the upper chassis.

In addition, a method of manufacturing a flat panel display device according to an exemplary embodiment of the present invention for solving the technical problem may include a lower plate, a lower sidewall extending from the lower plate, and a first protrusion protruding outward from the lower sidewall. Seating a backlight assembly in a lower chassis having a hook and a second hook; A mold frame having a first protrusion protruding in the first direction and having a guide hole formed therein and a second protrusion protruding in the first direction and having a guide groove formed therein are coupled to the lower chassis at an upper portion of the backlight assembly. step; Mounting a liquid crystal panel on the mold frame; And a bezel portion having a center opening and a sidewall bent from the bezel portion and extending from the bezel portion, wherein the sidewall includes a first fastening hole formed at a position corresponding to the first protrusion and a position corresponding to the second protrusion. And coupling and fixing the upper chassis, in which the fastening holes are formed, to the lower chassis and the mold frame at an upper portion of the liquid crystal panel, wherein the first protrusion is inserted into the first fastening holes of the upper chassis. The first hook of the lower chassis is fixed in the through hole of the first protrusion of the mold frame, the second protrusion is inserted into the second fastening hole of the upper chassis, and the second hook of the lower chassis is the mold frame. It is characterized in that the guide groove of the second projection of the fixing portion and the second fastening hole of the upper chassis.

According to the present invention, there is an advantage of reducing the width of the bezel of the flat panel display.

In addition, according to the present invention, by providing a display device having a narrow bezel, there is an advantage in that the overall size of the display device can be reduced while providing a screen having a predetermined size.

In addition, the flat panel display device having a narrow bezel according to the present invention minimizes the width of the bezel serving as a boundary between the image displayed on the screen and the rear or surrounding landscape of the flat panel display device, so that the bezel is displayed to the user during image display. Since it is hardly recognized, it can give a user a feeling that the image is actually floating in the air, thereby providing an image of various functions.

In addition, according to the present invention, as the width of the bezel decreases, the portability of the flat panel display device can be increased, and further, the flat panel display device of various designs can be provided, thereby increasing the user's satisfaction.

 In addition, according to the present invention, there is an advantage to provide a flat panel display device having a rigid fastening structure between an upper chassis, a lower chassis, and a mold frame, and a method of manufacturing the same.

In addition, according to the present invention, there is an advantage that can reduce the manufacturing cost and processing time of the flat panel display.

1 is an exploded perspective view illustrating a flat panel display device according to an exemplary embodiment of the present invention.
Figure 2 is a detailed block diagram of a mold frame according to an embodiment of the present invention.
3 is a view showing a state in which the lower chassis and the mold frame is coupled according to an embodiment of the present invention.
4 is a view showing a state in which the lower chassis, the mold frame and the upper chassis are fastened to each other according to an embodiment of the present invention.
5 is a cross-sectional view of the flat panel display device taken along a cutting line A-A 'in FIG.
FIG. 6 is a cross-sectional view of the flat panel display device taken along the cutting line BB ′ in FIG. 4.

Hereinafter, with reference to the accompanying drawings, the structure of the present invention and the method for producing and using the invention will be described in detail. Although the length and thickness of each device and member are expressed and their values described, it should be noted that the invention is not limited to these values unless they are stated in the claims. It should also be noted that the same reference numbers have been used for the same parts or devices.

1 is a perspective view illustrating an exploded view of a flat panel display device according to an exemplary embodiment.

Referring to FIG. 1, the flat panel display 1000 includes a bottom chassis 100, a back light assembly 200, a mold frame 300, a liquid crystal panel 400, And a top chassis 500.

The lower chassis 100 has a rectangular lower plate 110 arranged parallel to a horizontal plane (xy plane) and a lower sidewall 120 formed by bending in an upper vertical direction (+ z direction) from an edge of the lower plate 110. It has a rectangular parallelepiped shape as a whole. The backlight assembly 200 is accommodated in the inner space formed by the lower plate 110 and the lower sidewall 120. The lower chassis 100 surrounds at least a portion of a lower surface and a side surface of the backlight assembly 200 seated in the inner space, and covers the backlight assembly 200 so that the backlight assembly 200 does not flow in the inner space. Fix it tightly. The lower chassis 100 may be formed of a metal material such as aluminum alloy, stainless steel, steel electro galvanized cold rolled coil (SECC), etc. to protect the backlight assembly 200 from external physical shocks. have. In addition, a first hook 130 and a second hook 140 protrude from the lower sidewall 120 of the lower chassis 100 in an outward direction. The lower plate 110, the lower sidewall 120, and the hooks 130 and 140 of the lower chassis 100 may be integrally formed of the same material. In FIG. 1, a plurality of first hooks 130 and second hooks 140 may be formed. Although the hooks 130 and 140 are formed at predetermined intervals on the lower sidewall 120 and arranged in parallel with each other, the hook positions 130 and 140 may be changed. The hooks 130 and 140 may be formed at predetermined intervals in an entire area or a partial area of the lower sidewall 120.

The backlight assembly 200 provides light to the liquid crystal panel 400. The backlight assembly 200 may include a light source module 210, a light guide plate 220 that processes light emitted from the light source module 210, and provides appropriate light to the liquid crystal panel 400, a light control member 230, and light. The reflector 240 is comprised. The light source module 210 is a component that converts electrical energy into light energy, and includes a light emitting diode (LED) assembly, a cold cathode fluorescent lamp (CCFL), or a hot cathode fluorescent lamp (HOT Cathode Fluorescent Lamp). HCFL) and the like can be used.

It will be easily understood by those skilled in the art that the backlight assembly 200 illustrated in FIG. 1 is an edge type backlight assembly in which the light source module 240 of the flat panel display apparatus 1000 is disposed at an edge thereof. . It should be noted that the light source module 210 shown in FIG. 1 is a light emitting diode assembly, and a plurality of light emitting diodes 211 are mounted on a plate-shaped printed circuit board 212. In addition, although the light source module 210 is illustrated as being disposed on one side of the light guide plate 220 in FIG. 1, it should be noted that the light source module 210 may be disposed in pairs on both sides of the light guide plate 220.

Light generated by the light source module 210 is radiated into the light guide plate 220. The light guide plate 220 receives light from its side and emits light to the light adjusting member 230 through the front surface thereof. On the other hand, the light reflector 240 is disposed on the rear surface of the light guide plate 220 to be in close contact with the light guide plate 220 to reflect the light traveling toward the rear surface of the light guide plate 220 toward the light guide plate 220, thereby preventing light loss. It works. The light regulating member 230 may be configured of a set of sheets for performing optical path changes such as diffusing, scattering, and condensing, and the path and luminance of light output from the light guide plate 220. The control is provided to the liquid crystal panel 400.

The mold frame 300 may include a base portion 310 having a rectangular frame shape arranged parallel to the horizontal plane, a mold sidewall 320 extending vertically upward from an edge of the base portion 310, and the mold sidewall 320. ) Has a support (not shown) extending in the vertical downward direction from the base portion 310. At least one of the first protrusion 330 and the second protrusion 340 protruding outward from the mold side wall 320 is formed at the lower end of the mold side wall 320. The first protrusion 330 is formed at a position corresponding to the first hook 130 of the lower chassis 100. The second protrusion 340 is formed at a position corresponding to the second hook 140 of the lower chassis 100. The first protrusion 330 and the second protrusion 340 may be formed at predetermined intervals in an entire area or a partial area of the mold sidewall 320.

The mold frame 300 is coupled to the lower chassis 100 through the first protrusion 330 and the second protrusion 340, and fixes the backlight assembly 200 together with the lower chassis 100. In addition, the liquid crystal panel 200 is accommodated in an inner space provided by the base 310 and the mold sidewall 320 on the base 310 of the mold frame 300. The mold frame 300 may be formed of a synthetic resin such as plastic.

The base portion 310 has a central portion thereof open, and provides a path for light output from the backlight assembly 400 to be provided to the liquid crystal panel 400.

The liquid crystal panel 400 includes a color filter substrate 410, a thin film transistor substrate 420 facing the color filter substrate 410, and a liquid crystal layer (not shown) formed between the two substrates 410 and 420. And a liquid crystal driving circuit section 430. The driving circuit unit 430 may include a tape carrier package (TCP) 432 on which the data driving circuit 431 is mounted, a tape carrier package 434 on which the gate driving circuit 433 is mounted, and the TCP. And printed circuit boards (435) connected to the gates 432 and 434 to drive the driving circuits 431 and 433. The arrangement of the liquid crystal molecules of the liquid crystal layer changes according to the driving signal provided to the liquid crystal driving circuit unit 430 in the external electric circuit. The transmittance of light provided from the backlight assembly 200 to the liquid crystal layer is adjusted by changing the arrangement of the liquid crystal molecules, thereby displaying an image on the liquid crystal panel 400. The driving circuit part 430 is bent to the outside of the mold frame 300 and is fixed to the front surface of the lower chassis 100. The TCPs 432 and 434 extend through the cutouts 370 formed on the upper surface of the mold sidewall 320, and the cutouts may be arranged along the protrusions 330 and 340. In addition, a shield case (not shown) may be provided to be fixed to the rear surface of the lower chassis 100 without exposing the driving circuit unit 430 to the outside. The shield case may be fixed to the rear surface of the lower chassis 100 with screws.

The upper chassis 500 has a rectangular frame-shaped bezel portion 510 arranged parallel to a horizontal plane (xy surface) and an upper sidewall 520 extending in a vertical downward direction (-z direction) from an edge of the bezel portion 510. Has The bezel part 510 supports the edges of the liquid crystal panel 400 so as to overlap each other, thereby fixing the liquid crystal panel 400 to prevent separation. The center portion of the bezel portion 510 is opened, thereby exposing the effective display area of the liquid crystal panel 400 to the outside. The first fastening hole 530 and the second fastening hole 540 are formed in the upper sidewall 520. The first fastening hole 530 is formed at a position corresponding to the first protrusion 330 of the mold frame 300. The second fastening hole 540 is formed at a position corresponding to the second protrusion 340 of the mold frame 300. The first fastening hole 530 and the second fastening hole 540 may be formed at predetermined intervals in an entire area or a partial area of the upper sidewall 520.

The upper chassis 500 is coupled to the mold frame 300 and the lower chassis 100 through the first fastening hole 530 and the second fastening hole 540, and together with the mold frame 300, the liquid crystal panel 400. ). The upper chassis 500 may be formed of a metal material such as aluminum alloy, stainless steel, or SCC in order to protect the liquid crystal panel 400 from an external physical shock.

2 is a detailed block diagram of a mold frame according to an embodiment of the present invention.

Referring to FIG. 2, at least one of the first protrusion 330 and the second protrusion 340 is formed on the mold sidewall 320 of the mold frame 300.

The first protrusion 330 may include a first member 331 having a first extension part extending in a vertical direction from an outer lower end of the mold side wall 320, and a first extension part of the first member 331. And a second member 332 having second extensions extending vertically downward from the end. A guide hole 335 is formed in the center of the second member 332. The guide hole 335 is a means for firmly matching the first hook 130.

A curved surface 333 may be formed between the first member 331 and the second member 332. 2 illustrates an example in which the curved surface 333 is formed in a curved shape, the shape of which may be changed. The curved surface 333 has an advantage of making the fitting coupling between the mold frame 300 and the upper chassis 500 later.

The second protrusion 340 may include a third member 341 having a third extension part extending in a vertical direction from an outer lower end of the mold side wall 320, and a third extension part of the third member 341. And a fourth member 342 having a fourth extension extending vertically downward at the end. The fourth member 342 has a notch 345 at its end. The notch 345 is also a means for reliably receiving the second hook 140. A curved surface 346 may be formed between the third member 341 and the fourth member 342. 2 illustrates an example in which the curved surface 346 is curved, but its shape may be changed. The curved surface 346 has an advantage of allowing a fitting fit between the mold frame 300 and the upper chassis 500 later.

3 is a view showing a state in which the lower chassis and the mold frame is coupled according to an embodiment of the present invention.

Referring to FIG. 3, the first hook 130 protruding from the side wall of the lower chassis 100 is inserted into and fixed to the guide hole 335 of the first protrusion 330 of the mold frame 300. In addition, the second hook 140 protruding from the side wall of the lower chassis 100 is seated in the notch 345 of the second protrusion 340 of the mold frame 300. In this case, although the second protrusion 340 of the mold frame 300 overlaps the second hook 140 of the lower chassis 100, the second protrusion 340 and the hook 130 are not fixed to each other. Not in condition.

4 is a view illustrating a state in which a lower chassis, a mold frame, and an upper chassis are fastened to each other according to an embodiment of the present invention. FIG. 5 is a cross-sectional view of the flat panel display device taken along a cutting line A-A 'in FIG. 4. FIG. 6 is a cross-sectional view of the flat panel display device taken along the cutting line BB ′ in FIG. 4.

Referring to FIG. 5, the first hook 130 of the lower chassis 100, the first protrusion 330 of the mold frame 300, and the first fastening hole 530 of the upper chassis 500 are the same vertical. It is located on the plane (xz plane). Accordingly, the lower chassis 100, the mold frame 300, and the upper chassis 500 may be fastened and fastened to each other on the same plane. This eliminates the need for a separate space for fastening the lower chassis 100 or the mold frame 300 inside the upper chassis 500. As a result, the width of the upper chassis 500, that is, the size of the bezel There is an advantage in that (w) can be made small. For example, when the width of the upper sidewall 520 of the upper chassis 500 is about 6 mm, the size w of the bezel may be reduced by about 6 mm, which is the width of the upper sidewall 520.

In detail, the first hook 130 of the lower chassis 100 is inserted into and fixed to the guide hole 335 of the first protrusion 330. Accordingly, the lower chassis 100 may be fixed to the mold frame 300. In this case, a lower surface of the first hook 130 of the lower chassis 100 contacts the fourth member 130 of the first protrusion 330, and an upper end of the lower sidewall 120 contacts the base 310. . The first protrusion 330 to which the first hook 130 is fixed is inserted into the first fastening hole 530 of the upper chassis 500.

In this case, the lower surface of the second hook 140 of the lower chassis 100 contacts the upper chassis 500 in the second fastening hole 540, and the upper end of the lower sidewall 120 contacts the base portion 310. do. In addition, an upper end of the mold sidewall 320 of the mold frame 300 contacts the upper chassis 500. In addition, the lower sidewall 120 of the lower chassis 100 and the mold sidewall 320 of the mold frame 300 are positioned on one vertical surface and are arranged in parallel with the upper sidewall 520 of the upper chassis 500. .

The size of the first fastening hole 530 may be larger than the size of the first protrusion 330 so that the first protrusion 330 can be stably inserted.

In addition, the support part 350 extending from the base part 310 in the vertical direction in the mold sidewall 320 of the mold frame 300 may be further formed. The support part 350 supports the side wall 120 of the lower chassis 100 so that the lower chassis 100 does not move in the horizontal direction. A seating part 360 is formed between the first protrusion 330 and the support part 350, and the side wall 120 of the upper chassis 500 is accommodated in the seating part 360.

Next, referring to FIG. 6, the second hook 140 of the lower chassis 100, the second protrusion 340 of the mold frame 300, and the second fastening hole 540 of the upper chassis 500. It is located on the same vertical plane (xz plane). Accordingly, the lower chassis 100, the mold frame 300, and the upper chassis 500 may be fastened and fastened to each other on the same plane. This eliminates the need for a separate space for fastening the lower chassis 100 or the mold frame 300 inside the upper chassis 500. As a result, the width of the upper chassis 500, that is, the size of the bezel There is an advantage in that (w) can be made small.

In detail, the second protrusion 340 of the mold frame 300 is inserted into the second fastening hole 540 of the upper chassis 500. In addition, the second hook 140 of the lower chassis 100 is inserted into the notch 345 of the second protrusion 340, and the upper chassis (ie, in the second fastening hole 540 of the upper chassis 500). 500). As such, the second hook 140 is inserted between the second protrusion 340 and the second fastening hole 540 of the upper chassis 500, so that the lower chassis 100 may be fixed to the upper chassis 500. Can be. In addition, when the second hook 140 of the lower chassis 100 is fitted into the second fastening hole 540 of the upper chassis 500, the lower chassis 100 may be fixed to the upper chassis 500. It will be readily understood by those of ordinary skill in the art.

Here, the lower surface of the second hook 140 of the lower chassis 100 contacts the upper chassis 500 in the second fastening hole 540, and the upper end of the lower sidewall 120 contacts the base portion 310. do. In addition, an upper end of the mold sidewall 320 of the mold frame 300 contacts the upper chassis 500. In addition, the lower sidewall 120 of the lower chassis 100 and the mold sidewall 320 of the mold frame 300 are positioned on the same vertical surface and arranged in parallel with the upper sidewall 520 of the upper chassis 500.

The second fastening hole 540 may have a size sufficient to allow the second protrusion 340 and the hook 130 to be stably inserted. In addition, a seating part 360 is formed between the second protrusion 340 and the support part 350, and the side wall 120 of the upper chassis 500 is accommodated in the seating part 360.

As such, the hooks 130 and 140 of the lower chassis 100 are firmly fastened to the fastening holes 530 and 540 of the upper chassis 500 through the mold frame protrusions 330 and 340 on the same vertical surface without using a bolt or the like. Can be. As a result, not only the liquid crystal display device 1000 can be manufactured in a compact structure, but also the manufacturing cost and manufacturing process time can be reduced.

The fastening structure between the upper chassis, the lower chassis, and the mold frame according to the present invention is not only a liquid crystal display (LCD) but also an organic light emitting display (OLED), a plasma display (PDP), a field effect display (FED), The present invention can be applied to flat panel display devices such as an electrophoretic display device (EPD) and an electrowetting display device (EWD), and can be applied to all devices having an upper chassis, a lower chassis, and a mold frame.

100: lower chassis 110: lower plate
120: lower sidewall 130: first hook
140: second hook 200: backlight assembly
300: mold frame 310: base portion
320: mold sidewall 330: first protrusion
331, 332: first and second members 335: guide hole
333: curved surface 341, 342: third and fourth members
345: notch 346: inclined surface
340: second protrusion 350: support
360: seating portion 370: incision
400: liquid crystal panel 500: upper chassis
510: bezel portion 520: upper side wall
530: first fastening hole 540: second fastening hole
1000: liquid crystal display

Claims (14)

A lower chassis having a lower plate, a lower sidewall extending vertically upwardly from the lower plate, and a first hook and a second hook protruding outwardly from the lower sidewall;
A mold frame which protrudes in the outward direction and has a guide hole therein and a second protrusion which protrudes in the outward direction and has a notch, and is fixedly coupled to the lower chassis;
A display panel mounted on an upper portion of the mold frame; And
A bezel portion having a central opening and a sidewall extending downwardly from the bezel portion, wherein the sidewall is formed at a position corresponding to the first fastening hole and the second protrusion formed at a position corresponding to the first protrusion; A second fastening hole is formed, and an upper chassis coupled to the lower chassis and the mold frame at an upper portion of the liquid crystal panel;
The first protrusion is inserted into the first fastening hole of the upper chassis, the first hook of the lower chassis is fixed in the guide hole of the first protrusion of the mold frame,
The second protrusion is inserted into the second fastening hole of the upper chassis, and the second hook of the lower chassis is fixed to the notch of the second protrusion of the mold frame and the second fastening hole of the upper chassis. Flat panel display device. The method of claim 1,
And the first hook, the first protrusion, and the first fastening hole are coplanar. The method of claim 1,
And the second hook, the second protrusion, and the second fastening hole are located on the same plane. The method of claim 1,
And an upper end of the side wall of the lower chassis is in contact with the mold frame, and an upper end of the side wall of the mold frame is in contact with the upper chassis. The method of claim 1,
And the mold frame further includes a support portion extending from a bottom surface of the base portion, and the side wall of the lower chassis is inserted between the first protrusion and the support portion. The method of claim 1,
And the mold frame further includes a support portion extending from a bottom surface of the base portion, and the side wall of the lower chassis is inserted between the second protrusion and the support portion. The method of claim 1,
And a sidewall of the lower chassis and a sidewall of the mold frame are coplanar. The method of claim 1,
The mold frame includes a plurality of first protrusions and a plurality of second protrusions, and the first protrusions and the second protrusions are alternately arranged. The method of claim 1,
And the lower chassis and the upper chassis are made of metal, and the mold frame is made of synthetic resin. The method of claim 1,
And a backlight assembly accommodated on the lower plate of the lower chassis. A lower chassis having a lower plate, a lower sidewall extending vertically upwardly from the lower plate, and a first hook protruding outwardly from the lower sidewall, the lower chassis receiving the backlight assembly on the lower plate in the lower sidewall;
A mold frame which protrudes in the outward direction and has a protrusion having a guide hole therein and is fixedly coupled to the lower chassis at an upper portion of the backlight assembly;
A liquid crystal panel seated on the mold frame; And
A bezel portion having an open center and a sidewall extending downwardly from the bezel portion, wherein a fastening hole formed at a position corresponding to the protrusion is formed on the sidewall, and the lower chassis and the upper portion of the liquid crystal panel; And an upper chassis coupled to and fixed to the mold frame.
And the protrusion is inserted into a fastening hole of the upper chassis. A lower chassis having a lower plate, a lower sidewall extending vertically upwardly from the lower plate, and a hook formed to protrude outwardly from the lower sidewall, the lower chassis receiving the backlight assembly on the lower plate in the lower sidewall;
A mold frame which protrudes in the outward direction and has a protrusion having a guide groove and is fixedly coupled to the lower chassis at an upper portion of the backlight assembly;
A liquid crystal panel seated on the mold frame; And
A bezel portion having an open center and an upper sidewall extending vertically downwardly from the bezel portion, the upper sidewall having a fastening hole formed at a position corresponding to the protruding portion, wherein the lower chassis is formed above the liquid crystal panel; And an upper chassis coupled to and fixed to the mold frame.
And the protrusion is inserted into the fastening hole of the upper chassis, and the hook of the lower chassis is fixed to the notch of the protrusion of the mold frame and the fastening hole of the upper chassis. A lower plate, a lower sidewall extending vertically upwardly from the lower plate, a first hook and a second hook protruding outwardly from the lower sidewall, and receiving the backlight assembly on the lower plate in the lower sidewall. Lower chassis;
A mold frame which protrudes in the outward direction and has a first protrusion having a guide hole therein and is fixedly coupled to the lower chassis at an upper portion of the backlight assembly;
A liquid crystal panel seated on the mold frame; And
A bezel portion having an open center and a sidewall extending vertically downwardly from the bezel portion, wherein the sidewall includes a first fastening hole formed at a position corresponding to the first protrusion and a parallel to the first fastening hole; And an upper fastening hole formed at an upper part of the upper chassis, the upper chassis being coupled to the lower chassis and the mold frame at an upper portion of the liquid crystal panel.
The first protrusion is inserted into the first fastening hole of the upper chassis, the first hook of the lower chassis is fixed in the guide hole of the first protrusion of the mold frame,
And the second hook is fixed in the second fastening hole of the upper chassis. Mounting a backlight assembly in a lower chassis having a lower plate, a lower sidewall extending vertically upwardly from the lower plate, and a first hook and a second hook protruding outwardly from the lower sidewall;
Coupling a mold frame having a first protrusion protruding in the outward direction and having a guide hole therein and a second protrusion protruding in the first direction and having a notch, at the top of the backlight assembly;
Mounting a liquid crystal panel on the mold frame; And
A bezel portion having a central opening and a sidewall extending downwardly from the bezel portion, wherein the sidewall is formed at a position corresponding to the first fastening hole and the second protrusion formed at a position corresponding to the first protrusion; And coupling and fixing the upper chassis having a second fastening hole to the lower chassis and the mold frame at an upper portion of the liquid crystal panel.
The first protrusion is inserted into the first fastening hole of the upper chassis, the first hook of the lower chassis is fixed in the guide hole of the first protrusion of the mold frame,
The second protrusion is inserted into the second fastening hole of the upper chassis, and the second hook of the lower chassis is fixed in the notch of the second protrusion of the mold frame and the second fastening hole of the upper chassis. Flat panel display manufacturing method.

Images