KR20050081359A - Flat panel display device - Google Patents

Abstract

Disclosed is a flat panel display device having a flat panel display panel guide having a simple assembly structure. The first storage container accommodates the flat panel display panel, and the second storage container is fastened to the first storage container to support the flat panel display panel. The panel guide includes a body and a fastening portion protruding from the body, and is fastened to the second storage container to define a storage space of the flat panel display panel, and guides the flat panel display panel through a guide surface that is a side surface of the body. Accordingly, it is not possible to adopt a screw for fastening the panel guide to the second storage container or reduce the number of screws. Therefore, the cost reduction and the number of assembly processes can be reduced by reducing the number of screws, thereby improving the productivity and quality of the flat panel display.

Description

Flat Panel Display {FLAT PANEL DISPLAY DEVICE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat panel display having a simple assembly structure, and more particularly, to a flat panel display having a flat panel display panel guide in which screw fastening is omitted or the number of screws is reduced.

Recently, information processing devices have been rapidly developed to have various forms and functions and faster information processing speed. The information processed by such an information processing device has an electrical signal form, and a user needs a display device that serves as an interface to check such information.

A CRT monitor has been mainly used as an information display device until now, but recently, a liquid crystal display device having a light weight, a small size, and a function such as full-color and high resolution has been developed. As a result, the liquid crystal display device has become widely used as a display device of computer monitors, home wall-mounted televisions, and other information processing devices, which are representative information processing devices.

Liquid crystal display devices (LCDs) are one of flat panel display devices for displaying an image using liquid crystals.

Since most of the liquid crystal display devices are light-receiving devices that display images by controlling the amount of light coming from the outside, a separate light source for illuminating the LCD panel, that is, a backlight assembly, is essential. It is divided into edge type and direct type according to the location where the unit is installed.

In the double edge type, the lamp unit is installed on the side of the light guide plate for guiding the light, and the lamp unit surrounds the outer surface of the lamp and the lamp holder inserted into both ends of the lamp to protect the lamp, and the one side of the lamp. It is provided with a lamp reflector plate fitted to the side of the light guide plate to reflect the light emitted from the lamp to the light guide plate.

As such, the edge type in which the lamp unit is installed on the side of the light guide plate is mainly applied to a relatively small liquid crystal display device such as a laptop computer and a desktop computer monitor, and has good light uniformity and a long service life. It is advantageous for thinning a liquid crystal display device.

On the other hand, the direct type began to develop mainly as the size of the liquid crystal display device became larger than 20 inches, and arranged a plurality of lamps in a row on the lower surface of the diffusion plate to direct light directly to the front of the LCD panel. will be. Such a direct type is mainly used for a large screen liquid crystal display device requiring high luminance because the light utilization efficiency is higher than that of the edge type.

The direct type liquid crystal display device receives a light and displays an image according to the electro-optical properties of the liquid crystal, a middle chassis for accommodating the liquid crystal display panel under the liquid crystal display panel, and a light source for the liquid crystal display panel under the middle chassis. And a top chassis configured to guide the liquid crystal panel while exposing an effective display area of the liquid crystal display panel, the bottom chassis accommodating the backlight assembly, and a bottom chassis to receive the backlight assembly.

As the size of liquid crystal displays increases, the size of the middle chassis is also increasing. As a result, deformation of the middle chassis, etc., may occur easily, and assembly of the liquid crystal display panel to the storage space of the middle chassis may be poor. Accordingly, a panel guide for designating an area in which the liquid crystal display panel can be accommodated is coupled to the edge of the support plate of the middle chassis so that the liquid crystal display panel can be accommodated in the middle chassis regardless of the slight deformation of the middle chassis.

On the other hand, the conventional panel guide includes a guide boss formed integrally with the panel guide. Guide bosses engage the holes formed in the edges of the support plate of the middle chassis to position the panel guides, and then a number of screws fasten the panel guides to the middle chassis. As a result of the fastening of a plurality of screws, there is a problem of increasing the cost and increasing the number of assembling processes, thereby preventing productivity improvement of the liquid crystal display.

Therefore, the technical problem of the present invention is to solve such a conventional problem, an object of the present invention has a simple assembly structure, to provide a flat panel display device having a panel guide that can omit the screw for fastening or reduce the number of screws. It is.

A flat panel display device for realizing the above object of the present invention includes a flat panel display panel; A first storage container accommodating the flat panel display panel; A second storage container fastened to the first storage container to support the flat panel display panel; And a panel including a body and a fastening portion protruding from the body, the panel being fastened to the second storage container to define a storage space of the flat panel display panel, and guide the flat panel display panel through a guide surface which is a side surface of the body. Includes a guide.

According to such a flat panel display device, the screw for fastening the panel guide to the second storage container can be omitted or the number of screws can be reduced, thereby reducing the cost and the number of assembly processes, and improving productivity and quality.

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

1 is an exploded perspective view of a liquid crystal display according to a first exemplary embodiment of the present invention. In particular, a direct type liquid crystal display device including a panel guide having a simple assembly structure is illustrated. 2 is a perspective view of a panel guide according to a first embodiment of the present invention. 3 is a cross-sectional view taken along the line II ′ of FIG. 1.

1 to 3, the liquid crystal display according to the first exemplary embodiment of the present invention includes a flat panel display panel (hereinafter referred to as a liquid crystal display panel) 210, a second storage container (hereinafter referred to as a middle chassis) 220, The panel guide 100, a backlight assembly 230, a first storage container (hereinafter referred to as a bottom chassis) 240 and a top chassis 250 may be included. Unless otherwise specified, a portion where the bottom chassis 240 is positioned in the completed liquid crystal display device is referred to as a lower portion, and a portion in which the liquid crystal display panel 210 is positioned as an upper portion is promised.

The liquid crystal display panel 210 includes a liquid crystal between two substrates and two substrates, receives light from the backlight assembly 230, and displays an image by electro-optic properties of the liquid crystal.

The middle chassis 220 may have a rectangular frame shape having an upper and lower openings, and may have an angle of approximately 90 degrees at sides and edges of the sides, and include a support plate extending inwardly to define the sides of the liquid crystal display panel 210. Support from The middle chassis 220 edge support plate is formed with a plurality of holes to which the panel guide 100 is fastened.

Referring to FIG. 2, the panel guide 100 may include a first body part 110, a second body part 120, a first fastening part 115, and a second fastening part 125. The 210 is prevented from flowing in the plane, that is, in the + x-axis direction, the -x-axis direction, or the + y-axis direction or the -y-axis direction.

The first body part 110 has a rectangular first side surface (hereinafter referred to as a first guide surface) 111, a second side surface 112, a third side surface 113, a first bottom surface 114, and a first fastening portion. The unit 115 is included. The first guide surface 111 has a predetermined width as one side surface of the first body portion 110 and extends in the first direction to guide the liquid crystal display panel 210. The second side surface 112 has a constant width and is connected at one side edge with an angle of approximately 90 degrees with one side edge of the first guide surface 111. The third side surface 113 has a constant width and is connected at one side edge with an angle of about 90 degrees with the other side edge of the second side surface 112, and is formed in parallel with the first guide surface 111. The first bottom surface 114 abuts each lower edge of the first to third side surfaces 111, 112, 113 at the edge. The first fastening portion 115 protrudes from the lower edge of the second side surface 112, and the end of the fastening portion has a snap fit shape and is fastened to the middle chassis 220 in the future.

The second body part 120 has a rectangular first side surface (hereinafter referred to as a second guide surface) 121, a second side surface 122, a third side surface 123, a second bottom surface 124, and a second fastening The unit 125 is included. The second guide surface 121 has a constant width as one side surface of the second body portion 120 and extends at a predetermined angle with the first direction to guide the liquid crystal display panel 210. The second side surface 122 has a constant width and is connected to one side edge of the second guide surface 121 at one side at an angle of about 90 degrees. The third side surface 123 has a constant width and is connected at one side edge with an angle of about 90 degrees with the other side edge of the second side surface 122, and is formed in parallel with the second guide surface 121. The second lower surface 124 abuts each lower edge of the first to third side surfaces 121, 122, 123 at the edge. The second fastening portion 125 protrudes from the lower edge of the second side surface 122, and the end of the fastening portion has a snap fit shape and is fastened to the middle chassis 220 in the future.

The panel guide 100 is fastened to the upper edge support plate of the middle chassis 220. In particular, the first and second fastening parts 115 and 125 formed integrally with the panel guide 100 without fastening with screws are fastened only by the structure and elastic force.

On the other hand, in the conventional panel guide, the position of the panel guide is specified by the guide boss. Since the guide boss only specifies the position and does not fasten the panel guide and the middle chassis, a screw is used to fasten the middle chassis.

In addition, in the conventional panel guide, when there is a clearance between the guide boss and the groove of the middle chassis to which the guide boss is coupled, the panel guide is not completely fixed and flow may occur when fastening with one screw. Therefore, the panel guide and the middle chassis were fastened with two screws to prevent the above flow from occurring.

However, when the panel guide 100 according to the first embodiment of the present invention shown in FIG. 2 is adopted, the fastening portions 115 and 125 not only fix the position of the panel guide in the x, y, and z directions, Fasten the panel guide 100 and the middle chassis 220 with the structure and elastic force of the. Therefore, it is not necessary to use a screw to fasten the panel guide 100 and the middle chassis 220.

Meanwhile, the backlight assembly 230 is positioned below the middle chassis 220 and includes a plurality of lamp units 231, a reflecting plate 232, a diffusion plate 233, a diffusion sheet 234, a low mold frame 235, and an upper mold. Frame 236.

The plurality of lamp units 231 generates light. The reflecting plate 232 is located under the lamp unit 231 to reflect the light leaked to the diffusion plate 233 to increase the efficiency of the light. The diffusion plate 233 and the diffusion sheet 234 are positioned above the lamp unit 231 to change the direction of light incident from the lamp unit 231 to the front direction of the liquid crystal display panel 210 to improve front brightness.

The row mold frame 235 has a rod shape, and a stepped portion is formed in the upper part of the longitudinal direction to accommodate the upper mold frame 236, and a plurality of holes are supported at both ends of the plurality of lamp units 231 in the lower part of the length direction. Formed.

The upper mold frame 236 has a rectangular frame shape having an upper and lower openings, and includes side surfaces, and steps of the upper mold frame 236 to accommodate the diffusion plate 233 and the diffusion sheet 234 are formed.

The bottom chassis 240 has a rectangular box shape and an upper surface thereof is opened. Inside the bottom chassis 240, a storage space having a predetermined depth is formed, and the reflective plate 232, the lamp unit 231, the low mold frame 235, and the upper mold frame 236 are sequentially received.

According to the liquid crystal display, the screw for fastening the panel guide 100 to the middle chassis 220 may be omitted. Therefore, the cost reduction and the number of assembly processes can be reduced, thereby improving productivity and quality.

4 is a perspective view of a panel guide according to a second embodiment of the present invention. In particular, it shows a panel guide in which one screw fastening hole is formed to enhance the fastening force.

Referring to FIG. 4, the panel guide 400 according to the second embodiment of the present invention may include a first body part 410, a second body part 420, a first fastening part 415, and a second fastening part ( 425).

The first body part 410 has a rectangular first side surface (hereinafter referred to as a first guide surface) 411, a second side surface 412, a third side surface 413, a first bottom surface 414, and a first fastening portion. Part 415 is included. The first guide surface 411 has a predetermined width as one side of the first body 410 and extends in the first direction to guide the liquid crystal display panel 210. The second side surface 412 has a constant width and is connected at one side edge with an angle of approximately 90 degrees with one side edge of the first guide surface 411. The third side surface 413 has a constant width and is connected at one side edge with an angle of about 90 degrees with the other side edge of the second side surface 412, and is formed in parallel with the first guide surface 411. The first lower surface 414 is in contact with each lower edge of the first to third side surfaces 411, 412, and 413 at the edge, and has one screw fastening hole 414a near the second body portion 420. Formed. The first fastening portion 415 protrudes from the lower edge of the second side surface 412, has a snap fit shape, and is subsequently fastened to the middle chassis 220.

The second body portion 420 has a rectangular first side surface (hereinafter referred to as a second guide surface) 421, a second side surface 422, a third side surface 423, a second lower surface 424, and a second fastening. Part 425 is included. The second guide surface 421 has a predetermined width as one side of the second body 420 and extends at a predetermined angle with the first direction to guide the liquid crystal display panel 210 in the future. The second side surface 422 has a constant width and is connected at one side edge with an angle of approximately 90 degrees with one side edge of the second guide surface 421. The third side surface 423 has a constant width and is connected at one side edge with an angle of about 90 degrees with the other side edge of the second side surface 422, and is formed in parallel with the second guide surface 211. The second lower surface 424 abuts each lower edge of the first to third sides 441, 422, 423 at the edge. The second fastening portion 425 protrudes from the lower edge of the third side surface 423 and has a snap fit shape to be fastened to the middle chassis 220 in the future.

5 is a perspective view of a panel guide according to a third embodiment of the present invention. In particular, it shows a panel guide in which one screw fastening hole is formed to enhance the fastening force.

Referring to FIG. 5, the panel guide according to the third embodiment of the present invention may include a first body part 510, a second body part 520, a first fastening part 515, and a second fastening part 525. Include.

The first body portion 510 has a rectangular first side surface (hereinafter referred to as a first guide surface) 511, a second side surface 512, a third side surface 513, a first bottom surface 514, and a first fastening portion. Section 515. The first guide surface 511 has a predetermined width as one side of the first body 510 and extends in the first direction to guide the liquid crystal display panel 210 in the future. The second side surface 512 has a constant width and is connected at one side edge with an angle of approximately 90 degrees with one side edge of the first guide surface 511. The third side surface 513 has a constant width and is connected at one side edge with an angle of about 90 degrees with the other side edge of the second side surface 512, and is formed in parallel with the first guide surface 511. The first lower surface 514 is in contact with each lower edge of the first to third side surfaces 511, 512, and 513 at the edge, and has one screw fastening hole 514a near the second body portion 520. Formed. The first fastening portion 515 protrudes from the lower edge of the third side surface 513, has a snap fit shape, and is fastened to the middle chassis 220 in the future.

The second body portion 520 has a rectangular first side surface (hereinafter referred to as a second guide surface) 521, a second side surface 522, a third side surface 523, a second lower surface 524, and a second fastening Part 525 is included. The second guide surface 521 has a constant width as one side of the second body 520 and extends at an angle with the first direction to guide the liquid crystal display panel 210 in the future. The second side surface 522 has a constant width and is connected at one side edge with an angle of approximately 90 degrees with one side edge of the second guide surface 521. The third side surface 523 has a constant width and is connected at one side edge with an angle of about 90 degrees with the other side edge of the second side surface 522, and is formed parallel to the second guide surface 521. The second lower surface 524 abuts each lower edge of the first to third side surfaces 521, 522, and 523 at the edge. The second fastening portion 525 protrudes from the lower edge of the second side surface 522, and the fastening end has a snap fit shape and is fastened to the middle chassis 220 in the future.

6 is a perspective view of a panel guide according to a fourth embodiment of the present invention.

Referring to FIG. 6, the panel guide according to the sixth embodiment of the present invention includes a first body part 610, a second body part 620, a first fastening part 615, and a second fastening part 625. Include.

The first body 610 has a rectangular first side surface (hereinafter referred to as a first guide surface) 611, a second side surface 612, a third side surface 613, a first bottom surface 614, and a first fastening portion. A portion 615 is included. The first guide surface 611 has a predetermined width as one side of the first body 610 and extends in the first direction to guide the liquid crystal display panel 210 in the future. The second side surface 612 has a constant width and is connected at one side edge with an angle of approximately 90 degrees with one side edge of the first guide surface 611. The third side surface 613 has a constant width and is connected at one side edge with an angle of about 90 degrees with the other side edge of the second side surface 612, and is formed in parallel with the first guide surface 611. The first lower surface 614 is in contact with each lower edge of the first to third side surfaces 611, 612, and 613 at the edge, and has one screw fastening hole 614a near the second body portion 620. Formed. The first fastening part 615 protrudes from the lower edge of the third side surface 613, and the end of the fastening part has a snap fit shape and is fastened to the middle chassis 220 in the future.

The second body portion 620 has a rectangular first side surface (hereinafter referred to as a second guide surface) 621, a second side surface 622, a third side surface 623, a second lower surface 624, and a second fastening. Section 625. The second guide surface 621 has a constant width as one side of the second body 620 and extends at a predetermined angle with the first direction to guide the liquid crystal display panel 210 in the future. The second side surface 622 has a constant width and is connected at one side edge with an angle of approximately 90 degrees with one side edge of the second guide surface 621. The third side surface 623 has a constant width and is connected at one side edge with an angle of about 90 degrees with the other side edge of the second side surface 622, and is formed in parallel with the second guide surface 621. The second bottom surface 624 abuts each lower edge of the first to third side surfaces 621, 622, and 623 at the edge. The second fastening portion 625 protrudes from the lower edge of the third side surface 623, and the fastening end has a snap fit shape and is fastened to the middle chassis 220 in the future.

7 is a perspective view of a panel guide according to a fifth embodiment of the present invention. In particular, the fastening portion shows a panel guide protruding from the bottom surface, not the side edge.

Referring to FIG. 7, the panel guide according to the fifth embodiment of the present invention may include a first body portion 710, a second body portion 720, a first fastening portion 715, and a second fastening portion 725. Include.

The first body part 710 has a rectangular first side surface (hereinafter referred to as a first guide surface) 711, a second side surface 712, a third side surface 713, a first bottom surface 714, and a first fastening portion. A portion 715 is included. The first guide surface 711 has a predetermined width as one side of the first body 710 and extends in the first direction to guide the liquid crystal display panel 210 in the future. The second side surface 712 has a constant width and is connected at one side edge with an angle of approximately 90 degrees with one side edge of the first guide surface 711. The third side surface 713 has a constant width and is connected at one side edge with an angle of about 90 degrees with the other side edge of the second side surface 712, and is formed parallel to the first guide surface 711. The first lower surface 714 is in contact with each lower edge of the first to third side surfaces 711, 712, and 713 at the edge, and has one screw fastening hole 714a near the second body portion 720. Formed. The first fastening part 715 protrudes from the first lower surface 714 near the second side surface 712, and the end of the fastening part has a pair of snap fit shapes to be fastened to the middle chassis 220 in the future.

The second body part 720 may have a rectangular first side surface (hereinafter referred to as a second guide surface) 721, a second side surface 722, a third side surface 723, a second bottom surface 724, and a second fastening portion. Section 725. The second guide surface 721 has a constant width as one side of the second body portion 720 and extends at a predetermined angle with the first direction to guide the liquid crystal display panel 210 in the future. The second side surface 722 has a constant width and is connected at one side edge with an angle of approximately 90 degrees with one side edge of the second guide surface 721. The third side surface 723 has a constant width and is connected at one side edge with an angle of approximately 90 degrees with the other side edge of the second side surface 722, and is formed in parallel with the second guide surface 721. The second lower surface 724 abuts at each lower edge of the first to third side surfaces 721, 722, 723. The second fastening part 725 protrudes from the second lower surface 724 near the second side surface 722, and the end of the fastening part has a pair of snap fit shapes to be fastened to the middle chassis 220 in the future.

8 is a perspective view of a panel guide according to a sixth embodiment for realizing the object of the present invention. In particular, the fastening portion projects from the lower surface, rather than the side edge, and the fastening portion also shows a panel guide having a fastening protrusion shape. Since the panel guide 800 is the same except for the shape of the panel guide 700 and the fastening parts 815 and 825 illustrated in FIG. 7, the panel guide 800 is assigned the corresponding reference numeral and the detailed description thereof will be omitted. Ends of the fastening parts 615 and 625 have a fastening protrusion shape and are fastened to the middle chassis 220 in the future.

The panel guide 400 shown in FIG. 4 omits screw fastening and is fastened to the middle chassis 220 only by the structure and elastic force of the fastening parts 415 and 425 itself. Meanwhile, the panel guides 500, 600, 700, and 800 illustrated in FIGS. 5 to 8 form one screw fastening hole 514a, 614a, 714a, and 814a to enhance the fastening force. However, the fastening portions 515, 525, 615, 625, 715, 725, 815, 825 not only position the panel guides 500, 600, 700, 800, but are themselves fastening means, so that only one screw Even if tightened by using, it is possible to secure the same or more fastening force than fastening using a plurality of conventional screws.

According to the liquid crystal display including the panel guide having the fastening unit formed integrally, the screw for fastening the panel guide to the middle chassis can be omitted or the number of screws can be reduced, thereby reducing the cost and the number of processes.

Although described above with reference to the embodiments, those skilled in the art can be variously modified and changed within the scope of the invention without departing from the spirit and scope of the invention described in the claims below. I can understand.

As described above, according to the liquid crystal display device for realizing the object of the present invention, it is possible to omit the screw fastening and fasten the panel guide to the middle chassis, or to secure a sufficient fastening force with only one screw, and to provide the panel guide to the middle chassis. Can be tightened. Therefore, the screw fastening hole formed in the panel guide body can be omitted or the number of screws can be reduced, thereby reducing the cost and the number of processes of the liquid crystal display, thereby improving productivity and quality.

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

2 is a perspective view of a panel guide according to a first embodiment of the present invention.

3 is a cross-sectional view taken along the line II ′ of FIG. 1.

4 is a perspective view of a panel guide according to a second embodiment of the present invention.

5 is a perspective view of a panel guide according to a third embodiment of the present invention.

6 is a perspective view of a panel guide according to a fourth embodiment of the present invention.

7 is a perspective view of a panel guide according to a fifth embodiment of the present invention.

8 is a perspective view of a panel guide according to a sixth embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

100: panel guide 210: liquid crystal display panel

220: middle chassis 230: backlight assembly

240: bottom chassis 250: top chassis

Claims (5)

Flat panel display panel; A first storage container accommodating the flat panel display panel; A second storage container fastened to the first storage container to support the flat panel display panel; And A panel guide including a body and a fastening portion protruding from the body, the panel guide being fastened to the second storage container to define a storage space of the flat panel display panel, and guiding the flat panel display panel through a guide surface which is a side surface of the body. Flat display device comprising a. The method of claim 1, wherein the panel guide, A first body portion having a first guide surface and extending in a first direction, wherein the first guide surface guides a part of the side surface of the flat panel display panel; The second guide surface having a second guide surface and extending from the first body portion at an angle of approximately 90 degrees with the first direction, and connected at an edge at an angle of approximately 90 degrees with one side edge of the first guide surface; A second body part that guides a portion of the side surface of the flat panel display panel; A first fastening part protruding from the other edge of the first body part; And And a second fastening portion protruding from the other edge of the second body portion. The method of claim 1, wherein the panel guide, A first body portion having a first guide surface and extending in a first direction, wherein the first guide surface guides a part of the side surface of the flat panel display panel; The second guide surface having a second guide surface and extending from the first body portion at an angle of approximately 90 degrees with the first direction, and connected at an edge at an angle of approximately 90 degrees with one side edge of the first guide surface; A second body part that guides a portion of the side surface of the flat panel display panel; A first fastening portion protruding from the first lower surface connected at an angle of about 90 degrees with the other edge of the first guide surface; And And a second fastening portion protruding from the second lower surface connected to the other edge of the second guide surface at an approximately 90 degree angle and connected at an approximately 90 degree angle to the first lower surface. The flat panel display of claim 2, wherein one of the first body portion and the second body portion is provided with one hole for screwing. The flat panel display of claim 1, wherein a hole for fastening the panel guide is formed in the second storage container.