KR20060026248A - Liquid crystal display module - Google Patents

Abstract

The present invention provides a liquid crystal display having a support main in which a plurality of panel guides protrude upward along a top surface to guide a liquid crystal panel overlapping an upper portion of the back light assembly. Device module, specifically, the backlight assembly; A liquid crystal panel overlapping the front surface of the backlight assembly; The panel assembly has a rectangular frame bordering the edge of the backlight assembly, and a plurality of panel guides protrude upward along the top surface to guide the side surface of the liquid crystal panel. Each panel guide has an upper surface length in which the inner surface is in close contact with the side surface of the liquid crystal panel. A support main in which a flow groove is inserted along the direction; A cover bottom covering a rear surface of the backlight assembly and coupled to the support main; It provides a liquid crystal display module comprising a top cover bordering the front edge of the liquid crystal panel and coupled to the support main.

Support main, panel guide, flow groove, 1st and 2nd guide piece, elastic

Description

Liquid crystal display module             

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

2 is a partial cutaway view of a coupling state of a general liquid crystal display module.

3 is a cross-sectional view taken along the line III-III of FIG.

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

5 is a partial cutaway view of a coupling state of a liquid crystal display module according to the present invention.

6 is a cross-sectional view taken along the line VI-VI of FIG. 5.

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

110: support main 112: panel guide

114: flow groove 116,118: first and second guide piece

119: slope 120: backlight assembly

122: reflective sheet 124: fluorescent lamp

126: light guide plate 128: optical sheet

130: liquid crystal panel 132: flexible circuit board

134: liquid crystal panel drive circuit 140: cover bottom

150: top cover

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display module, and more particularly, a plurality of liquid crystal panels along an upper surface of the liquid crystal panel to guide the liquid crystal panel overlapping the back light assembly. The present invention relates to a liquid crystal display module having a support main with a panel guide protruding upward.

In recent years, as the society enters the information age, the display field that processes and displays a large amount of information has been rapidly developed, and recently, the thin film transistor (Thin) having excellent performance of thinning, light weight, and low power consumption has recently been developed. Film Transistor (TFT) type liquid crystal display (TFT-LCD) has been developed to replace the existing cathode ray tube (CRT).

The image realization principle of such a liquid crystal display device uses optical anisotropy and polarization property of liquid crystal, and as is well known, liquid crystal has a thin and long molecular structure and optical anisotropy having an orientation in an array and is placed in an electric field. As a result, the direction of molecular arrangement changes according to its size.

The liquid crystal display is an essential component of a liquid crystal panel composed of a pair of transparent insulating substrates, each having a liquid crystal layer interposed therebetween and having a field generating electrode formed thereon. The liquid crystal panel includes two electrodes. By changing the electric field of the liver, the alignment direction of the liquid crystal molecules is artificially adjusted, and various images are displayed by the change of the transmittance of light.

Meanwhile, a general liquid crystal panel requires a separate light source because it is a light receiving device that does not have a light emitting element. To this end, a backlight assembly is provided on the back of the liquid crystal panel to supply light.

In addition, the liquid crystal panel and the backlight assembly are modularized through various mechanical elements. FIG. 1 is an exploded perspective view of a general liquid crystal display module.

As can be seen, in the general liquid crystal display module, the backlight assembly 20 and the liquid crystal panel 30 are sequentially stacked inside the support main 10 having a substantially rectangular frame shape, and the shape deformation of the support main 10 is performed. Cover bottom (40) is coupled to the back of the support main 10 for protection of the fluorescent lamp 24 to be described later, and the edges of the front edge of the liquid crystal panel 30 can be fixed to fix them. Top cover (top cover: 50) is made by assembling and fastening to the support main (10).

At this time, the liquid crystal panel driver circuit 34 is connected to at least one side of the liquid crystal panel 30 via a flexible printed circuit board 32, and is folded and adhered to the back during the modularization process. ) Is a white or silver reflective sheet (22) interposed on the upper surface of the support main (10), and the fluorescent lamp 24 arranged along the inner edge of the support main (10) at the front of the reflective sheet (22); A light guide panel (LGP) 26 having a predetermined thickness for seating on the reflective sheet 22 so as to occupy the same plane as the fluorescent lamp 24 and refracting the light incident on the side to the front, and a plurality of covering the same. Enteric optical sheet 28.

Accordingly, the light emitted from the fluorescent lamp 24 is processed toward the liquid crystal panel 30 by the reflective sheet 22 and the light guide plate 26 and processed to a high quality of uniform luminance while passing through the optical sheet 28. 30), the liquid crystal panel 30 may display a high brightness image to the outside. At this time, reference numeral 29 denotes a lamp housing 29 surrounding the upper and lower sides of the fluorescent lamp 24 so that light emitted from the fluorescent lamp 24 is concentrated on the light guide plate 26 side. It is also possible to be integrated with 22).

Meanwhile, FIG. 2 is a perspective view in which a part of the top cover 50 is cut in the coupled state of the liquid crystal display module shown above to expose a part of the support main 10 and the liquid crystal panel 30 at the bottom thereof. 3 is a cross-sectional view taken along line III-III of the present invention. Referring to FIG. 1, the support main body 10 bordering the backlight assembly 20 and the liquid crystal panel 30 will be described in more detail. see.

As already mentioned, the general support main 10 is formed of a mold of metal or synthetic resin and has a substantially rectangular frame shape. As shown, a plurality of panel guides 12 are formed along the upper surface of the support main 10. Protrudes upward to guide the side surface of the liquid crystal panel 30, through which the detachment of the liquid crystal panel 30 is prevented.

In this case, a predetermined gap G appears between each panel guide 12 and the liquid crystal panel 30. The reason for the presence of the gap G is different between the support main 10 and the liquid crystal panel 30. In consideration of the difference in thermal expansion rate or the margin due to various factors in the process design, for example, when the panel guide 12 of the support main 10 and the side surface of the liquid crystal panel 30 contact each other accurately ) Will cry or break. Therefore, it is common to have a predetermined gap G between each panel guide 12 and the liquid crystal panel 30.

However, this causes some problems. For example, the process of seating the liquid crystal panel 30 on the support main 10 depends on manual labor, and in order to prevent contamination of the liquid crystal panel 30, the flexible circuit board 32 or the While great care is required, such as gripping and seating the liquid crystal panel drive circuit 34, there is no means for accurately aligning the liquid crystal panel 30 anywhere in the support main 10 or any other component. The center of the panel 30 and the center of the support main 10 are roughly conceived and seated. In this process, it is difficult to accurately seat the liquid crystal panel 30, and thus a long work time is required.

In addition, if an excessive force is applied in a state in which the liquid crystal panel 30 is not accurately seated inside each panel guide 12 of the support main 10, the liquid crystal panel 30 may be damaged, and the top cover 50 may be fastened. The situation in which the liquid crystal panel 30 is detached or damaged by flow due to the shock applied during the previous conveyance or the conveyance frequently appears.

Accordingly, there is a demand for a method of mounting and fixing the liquid crystal panel 30 to the support main 10 more easily and stably from before the top cover 50 is fastened.

Therefore, the present invention has been made in order to solve the above problems, it is possible to align the liquid crystal panel in a safer position more easily and securely when seated on the support main, unnecessary flow of the liquid crystal panel from the point before the top cover fastening It is an object of the present invention to provide a liquid crystal display module having a more improved support main, which can be suppressed and at the same time reduce the phenomenon of crying or breaking the liquid crystal panel.

The present invention provides a backlight assembly for achieving the above object; A liquid crystal panel overlapping the front surface of the backlight assembly; The panel assembly has a rectangular frame bordering the edge of the backlight assembly and a plurality of panel guides protrude upward along the top surface to guide the side surface of the liquid crystal panel. A support main in which a flow groove is inserted along the direction; A cover bottom covering a rear surface of the backlight assembly and coupled to the support main; It provides a liquid crystal display module comprising a top cover bordering the front edge of the liquid crystal panel and coupled to the support main.

At this time, each of the panel guides are faced with the flow groove between the first guide piece in close contact with the liquid crystal panel with a predetermined elasticity in a direction that is substantially distant or close to each other by the flow groove. It is characterized by being divided into a second guide piece, characterized in that the upper surface of the first guide piece is inclined lower toward the liquid crystal panel.

In addition, the support main is characterized in that the metal or synthetic resin material.

In addition, the backlight assembly may include a reflection sheet interposed on the front of the cover bottom; A fluorescent lamp arranged along an inner side of the support main edge of the front surface of the reflective sheet; A light guide plate mounted on the reflective sheet so as to occupy the same plane as the fluorescent lamp; And a plurality of optical sheets covering the fluorescent lamp and the light guide plate, or the backlight assembly comprises: a reflective sheet having the backlight assembly interposed in front of the cover bottom; Fluorescent lamps are arranged in parallel with the front surface of the reflective sheet; A plurality of optical sheets covering the fluorescent lamps are included. Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

4 is an exploded perspective view of the liquid crystal display module according to the present invention, wherein the support main body 110 having a substantially rectangular frame shape is formed around the sides of the liquid crystal panel 130 and the backlight assembly 120 which are stacked up and down. The cover bottom 140 is coupled to the rear surface thereof, and the top cover 150 bordering the front edge of the liquid crystal panel 130 is coupled to the support main 110 to form an integrated liquid crystal display device module.

More specifically, first, the liquid crystal panel 130 includes a pair of substrates bonded to each other with the liquid crystal layer interposed therebetween, and along the at least one edge thereof, the liquid crystal panel driver circuit (eg, the flexible circuit board 132). 134 is connected and folded to be in close contact during the modularization process. In addition, although not shown in detail in the drawing, a pair of substrates face each other, and a field generating electrode is formed, and the liquid crystal molecules are driven by the electric field difference therebetween to change the transmittance.

The backlight assembly 120 for supplying light to the liquid crystal panel 130 includes a plurality of optical sheets 128 that are in close contact with the rear surface of the liquid crystal panel 130, a light guide plate 126 interposed thereunder, and a light guide plate 126 interposed therebetween. And a fluorescent lamp 124 arranged along at least one edge side, and the light guide plate 126 and the rear surface of the fluorescent lamp 124 are interposed with a reflective sheet 122 to reflect light toward the liquid crystal panel 130. .

In addition, the backlight assembly 120 may further include a lamp housing 129 covering the upper and lower sides of the fluorescent lamp 124 so that the light emitted from the fluorescent lamp 124 is concentrated on the side of the light guide plate 126. Unlike shown, it may be formed integrally with the reflective sheet 122, but in these cases, one edge of the cover bottom 140 facing the fluorescent lamp 124 is bent in two stages to cover the upper and lower sides of the lamp housing 129. It may have a form.

In addition, the liquid crystal panel 130 and the backlight assembly 120 are surrounded by a substantially main frame-shaped support main 110 made of a synthetic resin mold or a metal material, and as a result, the fluorescent lamp 124 is the main support 110. The light is emitted toward the side of the light guide plate 126 in a state arranged along at least one edge, and the light of the fluorescent lamp 124 is refracted by the light guide plate 126 in the direction of the liquid crystal panel 130, and then a plurality of optical While passing through the sheet 128, it is processed into a high quality of uniform brightness and is incident on the liquid crystal panel 130.

Next, the cover bottom 140 is closely attached to the rear surface of the reflective sheet 122, and is coupled to the support main 110. In this case, the support main 110 passes through the edge of the cover bottom 140 as necessary. Multiple screws inserted into the can be used.

And finally, the top cover 150 to prevent the leakage of light and leakage of the backlight assembly 120, including the liquid crystal panel 130, while integrating the respective components at the same time the front edge of the liquid crystal panel 130 The frame is coupled to the support main 110 to complete the integrated LCD module.

On the other hand, the accompanying drawings and the description above is a photometric method called so-called sidelights in which the light of the fluorescent lamp 124 is incident from the side, on the other hand, the light guide plate 126 and the lamp housing 129 is omitted, the reflective sheet ( 122) A direct type for supplying light directly below the liquid crystal panel 130 by arranging a plurality of fluorescent lamps 124 side by side over the entire surface is also applicable to the present invention, and the cover bottom 140 also includes a support main ( Although it is shown to cover a part of the back of the 110, it is also possible to cover the whole alternatively, all of these are within the scope of the application will be apparent to those skilled in the art will not present a separate drawing.

In this case, especially in the liquid crystal display module according to the present invention, the support main 110 can be safely and conveniently aligned to the correct position when the liquid crystal panel 130 is coupled, and after coupling, unnecessary flow of the liquid crystal panel 130 is prevented. At the same time, the LCD panel 130 has a structure capable of reducing the phenomenon in which the liquid crystal panel 130 is crying or broken to the minimum. In contrast, as the coupled state of the liquid crystal display module according to the present invention, It demonstrates with reference to FIG. 5 shown in part cut out.

As shown, the support main 110 of the liquid crystal display module according to the present invention has a rectangular frame shape, and a plurality of panel guides 112 protrude upward along the upper surface thereof so as to overlap the top of the backlight assembly 120. The liquid crystal panel 130 is guided like a surround.

In this case, in particular, in the present invention, the inner surface of each panel guide 112 is in contact with the liquid crystal panel, and in particular, the upper surface of each of the panel guides 112 includes a groove 114 having a predetermined depth along the longitudinal direction. When the liquid crystal panel 130 is coupled to the liquid crystal panel 130, the liquid crystal panel 130 may be aligned with the liquid crystal panel 130. It will reduce the damage to a minimum.

Referring to FIG. 6, which is a cross-sectional view taken along the line VI-VI of FIG. 5, for convenience of understanding, the panel guides 112 according to the present invention may be arranged along the central longitudinal direction with the respective inner side surfaces in contact with the liquid crystal panel. The pair of first and second guide pieces 116 and 118 that are substantially separated from each other by the formed flow grooves 114 are formed, and the liquid crystal panel 130 maintains a predetermined elasticity so as to be far from or close to each other. At the same time, it is aligned to a proper position during mounting and at the same time, it seats and fixes the liquid crystal panel 130 after mounting.

That is, when the support main 110 and the panel guide 112 are made of metal or synthetic resin, the first and second separated by the flow grooves 114 formed at a predetermined depth along the longitudinal direction of the upper surface of the panel guide 112. The second guide pieces 116 and 118 have a predetermined elasticity in a direction away from or close to each other. As a result, when the liquid crystal panel 130 is seated, the liquid crystal panel 130 has a panel elasticity having a certain degree of elasticity. The first guide piece 116 is naturally guided by a load in a state of being closely guided to the first guide piece 116, and is aligned in the right position. After that, the first guide piece 116 does not cry or break the liquid crystal panel 130. An appropriate pressure of is applied to the side of the liquid crystal panel 130 to prevent the flow.

Therefore, it is possible to mount and fix the liquid crystal panel 130 to the support main 110 more accurately and safely. Hereinafter, the technical idea of the present invention is summarized by introducing a preferred assembly method of the liquid crystal display device module according to the present invention. do.

First, a square frame-shaped support main 110 and a cover bottom 140 are provided for manufacturing a liquid crystal display module according to the present invention, and then, they are combined. In this case, a plurality of screws inserted into the support main 110 through the edge of the cover bottom 140 may be used as necessary.

As a result, the cover bottom 140 forms a bottom surface, and a substantially square box shape is formed in which the support main 110 borders the edge. The backlight assembly is formed in front of the cover bottom 140 inside the support main 110. 120) will be seated.

In this case, when the mounting process of the backlight assembly 120 is further subdivided, the fluorescent lamp 124 is arranged along the inner edge of the support main 110 on the upper surface of the cover bottom 140 through the reflective sheet 122. Subsequently, the light guide plate 126 is seated on the reflective sheet 122 to occupy the same plane as the fluorescent lamp 124, and then the plurality of optical sheets 128 are covered thereon. In this case, it is also possible to cover the plurality of optical sheets 128 above the plurality of fluorescent lamps 124 side by side on the reflective sheet 122 with the light guide plate 126 omitted.

Subsequently, the liquid crystal panel 130 is seated in front of the backlight assembly 120, more precisely, the plurality of optical sheets 128. In this case, one side of the liquid crystal panel 130 may be disposed at one edge of the support main 110. After contact with the inner surface of the first guide piece 116 of the panel guide 112 formed in the can be naturally placed by the load to be horizontal to be seated in place. At this time, the flexible circuit board 132 attached along the edge of the liquid crystal panel 130 is properly flipped, and the liquid crystal panel driving circuit is brought into close contact with the back surface of the cover bottom 140. As a result, the liquid crystal panel 130 is provided with the first guide piece ( 116 is surrounded by a suitable pressure to maintain a lightly gripped state and thus is securely seated and fixed to the support main 110.

In this case, an inclination 119 may be provided on the upper surface of the first guide piece 116 to gradually lower toward the liquid crystal panel direction, whereby the liquid crystal panel 130 may be more stably seated.

Finally, the top cover 150 is covered to rim the front edge of the liquid crystal panel 130, and then coupled to the support main 110 to complete the liquid crystal display device module.

The liquid crystal display device module according to the present invention described above can be safely and conveniently aligned in the right position when the liquid crystal panel is seated on the support main, and at the same time suppresses unnecessary flow of the liquid crystal panel from the point before the top cover is fastened. There is an effect to minimize the phenomenon that the liquid crystal panel crying or breaking.

This makes it possible to assemble the liquid crystal display device more conveniently and simply, and greatly reduces the possibility of defects such as damage to the liquid crystal panel during this process.

Claims (6)

A backlight assembly; A liquid crystal panel overlapping the front surface of the backlight assembly; The panel assembly has a rectangular frame bordering the edge of the backlight assembly and a plurality of panel guides protrude upward along the top surface to guide the side surface of the liquid crystal panel. A support main in which a flow groove is inserted along the direction; A cover bottom covering a rear surface of the backlight assembly and coupled to the support main; And a top cover bordering a front edge of the liquid crystal panel and coupled to the support main. The method of claim 1, Each of the panel guides may face each other with the first grooves in close contact with the liquid crystal panel and the flow grooves interposed therebetween by the flow grooves, while the panel guides have a predetermined elasticity in a direction that is substantially far from or close to each other. Liquid crystal display module characterized in that divided into two guide pieces. The method of claim 2, And an upper surface of the first guide piece is inclined to be lowered toward the liquid crystal panel. The method according to any one of claims 1 to 3, wherein The support main is a liquid crystal display module, characterized in that the metal or synthetic resin material. The method of claim 1, The backlight assembly may include a reflection sheet interposed on the front of the cover bottom; A fluorescent lamp arranged along an inner side of the support main edge of the front surface of the reflective sheet; A light guide plate mounted on the reflective sheet so as to occupy the same plane as the fluorescent lamp; And a plurality of optical sheets covering the fluorescent lamp and the light guide plate. The method of claim 1, The backlight assembly is The backlight assembly may include a reflection sheet interposed on the front of the cover bottom; Fluorescent lamps are arranged in parallel with the front surface of the reflective sheet; And a plurality of optical sheets covering the fluorescent lamps.

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