KR100701661B1 - Liquid crystal module - Google Patents

Abstract

The present invention discloses a liquid crystal module in which foreign matter penetration into the display area is prevented. The disclosed liquid crystal module includes a fluorescent lamp, a light guide plate disposed on a side of the fluorescent lamp and transmitting light emitted from the fluorescent lamp to the liquid crystal panel, and a light installed on the rear surface of the light guide plate and exiting from the back surface of the light guide plate. A backlight unit including a reflective sheet for returning to the light guide plate, a lamp reflector surrounding the circumference of the fluorescent lamp including the light guide plate and a part of the reflective sheet, and a diffusion sheet and a prism sheet which are sequentially installed on the front surface of the light guide plate. In a structure in which a liquid crystal panel is stacked in a mold frame to be seated and assembled at a predetermined position, and the parts are laminated and assembled by a lower back cover and an uppermost bezel, the lamp reflector is mounted on a liquid crystal panel. Preventing foreign matter from penetrating into the display area of the liquid crystal panel at an adjacent end portion The foreign material penetration prevention jaw is provided, and the mold frame portion corresponding thereto is provided with a groove into which the foreign matter penetration prevention jaw is inserted and assembled.

Description

Liquid crystal module

1 is an exploded perspective view of a conventional liquid crystal module.

FIG. 2 is a sectional view of principal parts of a conventional liquid crystal module corresponding to FIG. 1; FIG.

3 is a sectional view showing the principal parts of a liquid crystal module according to the present invention;

Explanation of symbols on the main parts of the drawings

1: fluorescent lamp 2: lamp reflector

3: light guide plate 4: reflective sheet

5: diffusion sheet 6: prism sheet

7: mold frame 8: liquid crystal panel

9: bezel 10: back cover

30: foreign material penetration prevention jaw 32: groove

The present invention relates to a liquid crystal module, and more particularly, to a structure for preventing foreign matters distributed around the outside during penetration or impact into the display area.

Unlike the cathode ray tube (CRT), the liquid crystal display device is not a display device that emits light by itself, and thus a separate light source is provided on the rear surface of the liquid crystal panel to visually express an image. As a light source of the liquid crystal display, a back light unit equipped with a fluorescent lamp (CCFL) is currently used.

This backlight unit, as shown in FIG. 1, transmits light generated from the fluorescent lamp 1 through the light guide plate 3 and projects it onto the liquid crystal display surface directly under the liquid crystal panel 8.

In addition, a lamp reflector (2) is installed around the fluorescent lamp (1) in order to project more light generated by the fluorescent lamp (1) to the light guide plate (3), and the fluorescent lamp (1) ) And the lamp reflector 2 are integrally assembled to the backlight unit. In addition, a reflector sheet 4 is provided on the lower surface of the light guide plate 3 so that light exiting to the lower surface of the light guide plate 3 may return to the light guide plate 3 again. Optical sheets such as a diffuser sheet (5) and a prism sheet (6) are installed on the upper surface to increase optical characteristics of light, that is, uniformity and efficiency of the light emitted from the light guide plate 3.

And above these sheets, the mold frame 7 which guides the liquid crystal panel 8 is arrange | positioned so that the said liquid crystal panel 8 may be seated and assembled in a predetermined position, and the back cover of a metal material is formed in the lowest part of the said laminated body ( The back cover: 10) is disposed, and finally, a liquid crystal module is assembled by assembling a press called bezel (not shown) to surround the outer portion of the stack.

However, in the above-described conventional liquid crystal module, since the components constituting the laminate are laminated and assembled, there are microgaps between the parts to be stacked, and these microgaps become paths through which foreign matter penetrates. Accordingly, even after thoroughly inspecting and filtering foreign materials in the backlight unit assembly or liquid crystal module assembly process, foreign substances existing between components during the shipping process or external impact after shipment of the product are introduced into the display area through the fine gap. As it penetrates, a fatal defect is caused to the screen quality of the liquid crystal display device. In particular, since the liquid crystal module is used in an upright position, the micro-gap between the components located on the upper side in the module state becomes the main penetration path of the foreign material.

In detail, the foreign material may include an injection burr of a mold frame, mold residue generated from a hooking part when assembling the mold frame and a back cover, and a mold foreign material generated when assembling the hooking part of the bezel and the mold frame. Referring to FIG. 2, the foreign materials are present between the assembly space of the lamp reflector 4 and the back cover 10 and thus are not found during the foreign material inspection or the screen inspection filtering. It penetrates above the sheets of the liquid crystal panel 8 and the backlight unit, or penetrates between the sheets, through the parts stacked minute gap between the mold frame 7 and the mold frame 7, and is thus visible on the screen display area. The screen quality of the display device causes a fatal defect.

As a result, in the lamination and assembly of parts, such minute gaps cannot be essentially removed, and thus, infiltration of foreign matter through the minute gaps between the parts and the deterioration of the screen quality of the liquid crystal display device cannot be prevented at present.                         

Accordingly, an object of the present invention is to provide a liquid crystal module which is designed to solve the above-described conventional problems, and prevents the penetration of foreign matter present in the micro-gap between components into the screen display area.

Another object of the present invention is to provide a liquid crystal module which prevents deterioration of the screen quality of the liquid crystal display by preventing foreign matter from penetrating into the screen display area.

In order to achieve the above object, the present invention is a fluorescent lamp, a light guide plate disposed on the side of the fluorescent lamp for transmitting the light emitted from the fluorescent lamp to the liquid crystal panel, and is provided on the back of the light guide plate to the back of the light guide plate A back sheet including a reflecting sheet for returning the emitted light back to the light guide plate, a lamp reflector surrounding the circumference of the fluorescent lamp including the light guide plate and a part of the reflecting sheet, and a diffusion sheet and a prism sheet which are sequentially installed in front of the light guide plate In a liquid crystal module in which a light unit is stacked in a mold frame for allowing the liquid crystal panel to be seated and assembled at a predetermined position, and a liquid crystal panel is disposed on the upper side thereof, and the components are laminated and assembled by the lower back cover and the uppermost bezel. In the lamp reflector, foreign matter is transferred to the display area of the liquid crystal panel at one end adjacent to the liquid crystal panel. Is provided with a foreign object penetration preventing fence for preventing the projection, the corresponding frame parts are molded to provide a liquid crystal module, characterized in that the groove of the foreign object penetration preventing fence that is inserted into the assembly provided.

(Example)

Hereinafter, with reference to the accompanying drawings to describe the present invention in detail.

First, the technical principle of the present invention, the present invention, instead of accommodating the micro-gaps inevitably occur in the laminated assembly structure of parts, by changing the shape of one end of the lamp reflector to form a foreign material penetration prevention jaw, A groove for allowing the foreign material penetration prevention jaw of the lamp reflector is inserted into the mold frame portion.

In this case, foreign matter penetration is suppressed by the foreign matter penetration barrier itself, and the penetration path of the foreign substance is lengthened by the foreign substance penetration prevention jaw, so that foreign matter penetration into the screen display area is suppressed, thereby reducing the screen quality of the liquid crystal display device. Can be prevented.

In detail, Figure 3 is a cross-sectional view showing a liquid crystal module assembly structure according to the present invention, as follows. Here, the same parts as in Fig. 2 are designated by the same reference numerals.

First, the liquid crystal module of the present invention has a structure in which a backlight unit used as a light source for visually expressing an image on the liquid crystal panel 8 and its rear surface is laminated and assembled by the bezel 9 and the back cover 10.

Here, the backlight unit may include a fluorescent lamp 1, a light guide plate 3 spaced apart from the side of the fluorescent lamp 1 to receive light from the fluorescent lamp 1 and transmit the light from the fluorescent lamp 1 to the liquid crystal panel 8; The lamp reflector 2 surrounding the circumference of the fluorescent lamp 1 including a part of the light guide plate 3 and the light disposed on the rear surface of the light guide plate 3 and exited to the rear surface of the light guide plate 3 are again used. It is composed of a reflecting sheet 4 to return to 3), and a diffusion sheet 5 and a prism sheet 6 which are sequentially disposed on the front surface of the light guide plate 3 to increase the uniformity and efficiency of light. These components are then laminated and assembled to the mold frame 7 which guides the liquid crystal panel 8 so that the liquid crystal panel 8 is seated and assembled at a predetermined position.

In the liquid crystal module of the present invention, at one end of the lamp reflector 2, i.e., the end portion adjacent to the liquid crystal panel 8, unlike the conventional one, it is bent in the upper direction of the module to the screen display area. The foreign matter penetration prevention jaw 30 is provided to prevent the foreign material from penetrating. Correspondingly, the mold frame 7 is provided with a groove 32 so that the foreign matter penetration prevention jaw 30 can be inserted therein.

In this case, since the length of the foreign matter penetration path is increased by the foreign matter penetration prevention jaw 30 itself as well as the foreign matter penetration prevention jaw 30, between the liquid crystal panel 8 and the sheets of the backlight unit and the sheet of the backlight unit. It is possible to restrain the foreign matter from penetrating between the devices as much as possible, thereby preventing foreign matter from penetrating into the screen display area during an external impact or vibration, thereby preventing deterioration of the screen quality of the liquid crystal display device. .

On the other hand, the foreign material penetration prevention projection 30 of the lamp reflector (2) is to increase the rigidity of the lamp reflector itself to maintain the rigidity even in a thin material so that the module can be applied to the trend of becoming thin and thin.

As described above, the present invention by bending one end of the lamp reflector disposed adjacent to the liquid crystal panel to install the foreign matter penetration prevention jaw and at the same time to install a groove in which the foreign matter penetration prevention jaw can be inserted into the mold frame, It is possible to prevent foreign matter from penetrating into the screen display area by external shock or vibration during the assembling or transporting process of the liquid crystal module including the backlight unit by the foreign material penetration preventing jaw.

Therefore, the present invention can prevent the deterioration of the screen quality of the liquid crystal display device due to foreign matter, thereby improving the reliability of the liquid crystal display device.

As mentioned above, although specific embodiments of the present invention have been described and illustrated, modifications and variations can be made by those skilled in the art. Accordingly, the following claims are to be understood as including all modifications and variations as long as they fall within the true spirit and scope of the present invention.

Claims (1)

A fluorescent lamp, a light guide plate disposed on the side of the fluorescent lamp and transmitting light from the fluorescent lamp to the liquid crystal panel, and a reflective sheet installed on the rear surface of the light guide plate to return the light emitted to the rear surface of the light guide plate back to the light guide plate; And a lamp reflector surrounding a fluorescent lamp including a portion of the light guide plate and the reflective sheet, and a backlight unit including a diffusion sheet and a prism sheet sequentially installed on the front surface of the light guide plate to allow the liquid crystal panel to be seated and assembled at a predetermined position. In a liquid crystal module in which a liquid crystal panel is stacked in a mold frame, a liquid crystal panel is disposed on the upper side, and the components are laminated and assembled by a lower back cover and an uppermost bezel. The lamp reflector is provided with a foreign material penetration prevention jaw for preventing foreign matter from penetrating into the display area of the liquid crystal panel at one end adjacent to the liquid crystal panel, and a groove into which the foreign material penetration prevention jaw is inserted is assembled in the mold frame portion corresponding thereto. Liquid crystal module, characterized in that provided.

Images