KR20060022006A - Liquid crystal display device module and fabricating method the same - Google Patents

Abstract

The present invention relates to a liquid crystal display module having a U-shaped or L-shaped fluorescent lamp module having a lamp holder interposed in the bent portion thereof for fixing the fluorescent lamp and a manufacturing method thereof. Specifically, the present invention provides a support frame having a rectangular frame shape; A fluorescent lamp bent in an L or U shape to be arranged along at least two inner edges of the support main; A light guide plate interposed on the same plane as the fluorescent lamp; A plurality of optical sheets seated on the light guide plate; A liquid crystal panel seated on the plurality of optical sheets; A cover bottom adhered to the back of the support main; At least one lamp holder coupled to the cover bottom while surrounding the bent portion of the fluorescent lamp from above; It provides a liquid crystal display module and a manufacturing method thereof comprising a top cover which is bounded by the edge of the liquid crystal panel and coupled to the support main and cover bottom, the process of assembly and disassembly with the stable fixing of the fluorescent lamp This has the advantage of being easier and simpler to perform.

Lamp holder middle, Insertion groove, Fitting projection, Fitting step, Support main, Stopper projection

Description

Liquid crystal display device module and fabrication method the same             

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

FIG. 2 is a detailed perspective view of a portion of FIG. 1. FIG.

3 is a cross-sectional view taken along the line III-III of FIG. 2;

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

FIG. 5 is a detailed perspective view of the portion of FIG. 4; FIG.

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

7 is a rear perspective view of the lamp holders of the liquid crystal display module according to the present invention;

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

110: support main 120: backlight assembly

122: reflection sheet 124: primary bent portion

126: secondary bent portion 130: fluorescent lamp

132: light guide plate 134: optical sheet                 

140: liquid crystal panel 142: flexible circuit board

144: drive circuit 150: cover bottom

160: top cover 170: lamp holder middle

172: insertion groove 174: fitting projection

176: fitting step 180: fitting hole

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device module, and more particularly, a lamp interposed at a bent portion thereof to fix the fluorescent lamp in a liquid crystal display module using a U-shaped or L-shaped fluorescent lamp. A liquid crystal display module having a lampholder middle and a method of manufacturing the same.

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 the optical anisotropy and polarization property of the liquid crystal. As is well known, liquid crystal has a thin and long molecular structure and optical anisotropy having an orientation in an array, and when placed in an electric field, depending on its size It is polar in nature with its changing direction.

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 therebetween. By causing the electric field to change, the alignment direction of the liquid crystal molecules is artificially adjusted, and various images are displayed by the change of the transmittance of light. In this case, since a general liquid crystal panel does not have a light emitting element, it requires a separate light source. For this purpose, 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 to reduce impact and light loss. The attached FIG. 1 is an exploded perspective view of a general liquid crystal display module. support main: 10) The backlight assembly 20 and the liquid crystal panel 40 are sequentially stacked inside the support main body 10 to prevent deformation of the support main 10 and to protect the fluorescent lamp 30 described later. Cover bottom (50) is coupled to the back, and the top cover (60) that borders the front edge of the liquid crystal panel 40 to fix both of them support main (10) and cover bottom ( 50) is assembled and fastened.

As shown, the liquid crystal panel driver circuit 44 is connected to at least one side of the liquid crystal panel 40 through a flexible printed circuit board 42, which is covered by the covertum during the modularization process. 50) Folded to the back and adhered.

The backlight assembly 20 may include a white or silver reflective sheet 22 interposed on the upper surface of the support main 10, and a fluorescent lamp 30 arranged along the inner side of the edge of the support main 10 at the front of the support main 10. It includes a light guide panel (32) and a plurality of optical sheets 34 covering the light guide panel (32) for refracting the light incident on the side seated on the reflective sheet 22 having a predetermined thickness so as to occupy the same plane do.

Accordingly, the light emitted from the fluorescent lamp 30 is processed toward the front of the liquid crystal panel 40 by the reflective sheet 22 and the light guide plate 32 while being processed to a high quality of uniform luminance while passing through the optical sheet 34. The liquid crystal panel 40 is incident to the liquid crystal panel 40, and thus the liquid crystal panel 40 may display an image of high brightness to the outside.

On the other hand, the accompanying drawings and the description above is a structure corresponding to a 5 to 8 inch small liquid crystal display device commonly used in PDAs, electronic notebooks or automotive display devices, as shown, the fluorescent lamp 30 is U-shaped or L At least two edge ends of the reflective sheet 22 corresponding to the fluorescent lamp 30 are arranged in a shape of a ruler and are arranged along at least two inner edges of the support main 10. The outer side of the fluorescent lamp 30 and the front side of the fluorescent lamp 30 are maintained to be opened toward the inner side thereof.

In more detail, referring to FIG. 1, the support main 10, the cover bottom 50, and the reflective sheet 22 and the fluorescent lamp 30 which are part of the backlight assembly in FIG. 1 will be described in more detail. First, the fluorescent lamp 30 maintains a U or L shape in which a portion corresponding to an edge is vertically bent so that the fluorescent lamp 30 may be arranged along at least two inner edges of the support main 10, and the corresponding reflective sheet 22 ) Is bent upwards and then bent inward to surround the fluorescent lamp 30 from the outside.

In order to maintain the bending form of the reflective sheet 22, a plurality of stopper protrusions 12 vertically branched inwardly exist at the upper end of the support main 10, and separately from the fluorescent lamp 30. For more stable fixing, the lamp holders 70 protruding toward the front surface of the support main part 10 through the reflective sheet 22 are provided with the bottom surface attached to the cover bottom 50. The upper surface thereof is provided with an insertion groove 72 through which the bent portion of the fluorescent lamp 30 can be fitted to guide the portion as if it is wrapped around it.

Accordingly, the L-shaped or U-shaped fluorescent lamps 30 are bent portions are inserted into the insertion grooves 72 of the lamp holders 70, respectively, and their positions are fixed, and the reflective sheets 22 corresponding to the fluorescent lamps 30 are fixed. The end portion is maintained in the secondary bent state by the stopper protrusion 12 formed in the support main 10.

However, the above-described general liquid crystal display module exhibits some problems. Firstly, in fixing the lamp holders 70 to the cover bottom 50, assembling work is increased by mobilizing an adhesive member such as a double-sided tape. There is a high possibility of failure, and secondly, when the fluorescent lamp 30 is assembled, the fluorescent lamp 30 is frequently damaged due to physical interference and contact with the distal end of the reflective sheet 22.

That is, referring to FIG. 3, which is a cross-sectional view taken along line III-III of FIG. 2, the general lamp holders 70 have a cover bottom 50 using an adhesive member such as a double-sided tape 80 at the bottom thereof. The upper part is exposed on the reflective sheet 22 in the fixed state, and thus the process of bonding the lamp holders 70 to the cover bottom 50 by mobilizing the double-sided tape 80 is entirely manual. There is no need to rely on the hassle that greatly increases the overall assembly labor.

In addition, when the lamp holders 70 are not fixed to the correct position due to inaccuracy of manual labor, the fluorescent lamp 30 is damaged in a subsequent assembly process, and foreign matter such as dust is applied to the corresponding adhesive site by using an adhesive material. This concentration attaches and contaminates the entire liquid crystal display device and acts as a cause of degrading the image quality.

In addition, the assembling procedure of the general liquid crystal display module described above is simply combined with the support main 10 on the cover bottom 50 in which the lamp holders 70 are each adhesively fixed and reflected thereon. The seat 22 is seated, and in this case, the distal end portion of the reflective sheet 22 is maintained in the secondary bent state by the stopper protrusion 12 of the support main 10.

Subsequently, the bent portions of the L-shaped or U-shaped fluorescent lamps 30 are respectively inserted into the insertion grooves 72 of the corresponding lamp holders 70. During this process, the fluorescent lamps 30 are secondly bent. Physically interfere with and contact with the distal end of the reflective sheet 22, and as a result, even a skilled worker often appears to break during the assembly of the fluorescent lamp 30.

Furthermore, in order to reduce the physical interference with the fluorescent lamp 30 and the distal end of the reflective sheet 22 as much as possible, the stopper protrusion 12 branched from the support main 10 has a limited length (T). Due to this, the tip of the reflective sheet 22 is not substantially leveled, and the amount of light that is unnecessarily lost due to lifting is also increased.

Accordingly, the present invention has been made in order to solve the above problems, and in the liquid crystal display device module using the L-shaped or U-shaped fluorescent lamps, the process of assembling and disassembling them together with the stable fixing of the fluorescent lamps more easily and simply. An object of the present invention is to provide a liquid crystal display module and a method of manufacturing the same. In addition, the present invention is to maintain the bent state of the reflective sheet more stably to prevent unnecessary loss of light, and to minimize the possibility of damage to the fluorescent lamp that can be generated during the assembly process.

The present invention and the main frame of the main frame to achieve the above object; A fluorescent lamp bent in an L or U shape to be arranged along at least two inner edges of the support main; A light guide plate interposed on the same plane as the fluorescent lamp; A plurality of optical sheets seated on the light guide plate; A liquid crystal panel seated on the plurality of optical sheets; A cover bottom adhered to the back of the support main; At least one lamp holder coupled to the cover bottom while surrounding the bent portion of the fluorescent lamp from above; It provides an LCD module comprising a top cover bordering the edge of the liquid crystal panel and coupled to the support main and the cover bottom.

At this time, the bottom surface of the lamp holder is characterized in that the insertion groove for receiving the bent portion of the fluorescent lamp inwardly formed, the bottom surface of the lamp holder is at least one fitting projection inserted into the cover bottom fastening Characterized in that it protrudes downward, the side of the lamp holder, characterized in that at least one fitting end to be inserted into the support main is protruded laterally.

The light guide plate may further include a reflective sheet interposed between the light guide plate and the fluorescent lamp and the cover bottom. In this case, an end portion of the reflective sheet corresponding to the fluorescent lamp may be vertically upwardly disposed between the fluorescent lamp and the support main. After being bent and then bent inward, the fluorescent lamp is characterized in that it is wrapped around the outside.

In addition, the upper end of the support main is characterized in that it further comprises a plurality of stopper projections vertically branched inward to maintain the secondary bent state of the reflective sheet.

In addition, the present invention comprises the steps of: a) comprising a cover bottom; b) coupling a support frame having a rectangular frame shape to the edge of the cover bottom; c) arranging a fluorescent lamp bent in an L or U shape along at least two inner edges of the support main; d) fastening at least one lamp holder to the cover bottom to cover the bent portion of the fluorescent lamp from above to below; e) mounting a light guide plate on an entire surface of the cover bottom inside the fluorescent lamp; f) interposing a plurality of optical sheets in front of the light guide plate and the fluorescent lamp; g) mounting a liquid crystal panel on the front surface of the plurality of optical sheets; h) providing a liquid crystal display module manufacturing method comprising the step of coupling the top cover that borders the edge of the liquid crystal panel to the support main and cover bottom.

In this case, after step b) and before step c), the method may further include interposing a reflective sheet on the cover bottom. 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 borders the liquid crystal panel 140 and the backlight assembly 120 which are stacked up and down, and The cover bottom 150 is coupled to the rear surface thereof, and the top cover 160 that borders the front edge of the liquid crystal panel 140 is assembled and fastened to the support main 110 and the cover bottom 150 to be integrated. The module is formed.

More specifically, first, the liquid crystal panel 140 includes a pair of substrates that are bonded to each other with the liquid crystal layer interposed therebetween, and the flexible circuit board 142 or the like so as to be folded and adhered to the back during modularization along at least one edge thereof. Although the driving circuit 144 is connected to each other, although not shown in detail in the drawing, a pair of substrates face each other, and an electric field generating electrode is formed, and the liquid crystal molecules are driven by the electric field difference therebetween to transmit the light. A change occurs.

In addition, the backlight assembly 120 supplying light to the liquid crystal panel 140 includes a plurality of optical sheets 134 that are in close contact with the rear surface of the liquid crystal panel 140, a light guide plate 132 interposed therebetween. And a fluorescent lamp 130 arranged along at least one edge side thereof, so that light emitted from the fluorescent lamp 130 is incident on the side of the light guide plate 132 and refracted in the direction of the liquid crystal panel 140. While passing through 134, a high quality of uniform luminance is processed to be incident on the liquid crystal panel 140.

In this case, in particular, the fluorescent lamp 130 may have a shape bent in an L or U shape to be arranged along at least two edge sides of the light guide plate 132 as shown, and to prevent light loss, the light guide plate 132 and the fluorescent light A reflective sheet 122 may be further interposed on the rear surface of the lamp 130. In this case, preferably, the distal end portion of the reflective sheet 122 corresponding to the fluorescent lamp 130 is first bent upwards and then again. It is preferable to have a form that is secondly bent inward to surround the fluorescent lamp 130, and as a result, the light of the fluorescent lamp 130 can be more effectively concentrated on the light guide plate 132 and the liquid crystal panel 140.

In addition, the liquid crystal panel 140 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. As a result, the L-shaped or U-shaped fluorescent lamp 130 is The light guide plate 132 is seated therein with the support main 110 arranged along at least two inner edges of the support main 110, and the distal end of the reflective sheet 122 corresponding to the fluorescent lamp 130 is provided with the fluorescent lamp 130 and the support. The first bent upwards to pass between the main 110, and then the second bent inwardly.

Next, the cover bottom 150 is closely attached to the rear surface of the reflective sheet 122, and is coupled to the support main 110, and the top cover 160 bordering the liquid crystal panel 160 from the front is supported. ) And the cover bottom 150.

On the other hand, the above description is based on the general technical content, in the present invention, at least one lamp holder interposed along the bent portion of the L-shaped or U-shaped fluorescent lamp 130 so as to more stably be fixed Characterized in that it is, through the specific form and fastening method thereof can be performed more easily and simply the process of assembly and disassembly thereof with the stable fixing of the fluorescent lamp 130.

4, that is, the support main 110 and the cover bottom 150 in one corner direction, the reflective sheet 122 and the fluorescent lamp 130 corresponding thereto, and the lamp holders 170 according to the present invention. ) Will be described in more detail with reference to a partial perspective view of FIG.

As shown, the liquid crystal display module according to the present invention adopts a method in which the lamp holders 170 press the bent portion of the L-shaped or U-shaped fluorescent lamp 130 downward from the top, and wrap it therein. An insertion groove 172 in which the fluorescent lamp 130 may be accommodated is formed at the bottom of the lamp holders 170.

More specifically, FIG. 6 is a cross-sectional view taken along the line VI-VI of FIG. 5, and FIG. 7 is a perspective view illustrating the bottom structure of the lamp holders 170 according to the present invention. The lamp holders 170 may be made of a synthetic resin for protecting the fluorescent lamp 130. For example, the bottom of the lamp holders 170 and the adjacent reflective sheet 122 may be in close contact with each other on the plane of the reflective sheet 122. The first bent portion 124 of the) may be formed in a square or circular or similar cuboid shape having two sides in close contact with both inner surfaces.

The height of the lamp holders 170 may be free within a range larger than the diameter of the fluorescent lamp 130 and smaller than the primary bent portion 124 of the reflective sheet 122, and from the fluorescent lamp 130. It is desirable that the size is as small as possible so as not to block the generated light.

In addition, as described above, the bottom surface of the lamp holders 170 is formed with an insertion groove 172 having a shape corresponding thereto to accommodate the bent portion of the fluorescent lamp 130. The fitting protrusion 174 inserted into the cover bottom 150 through the reflective sheet 122 may protrude, and preferably penetrates the primary bent portion 124 of the reflective sheet 122 adjacent to each other. At least one pair of fitting ends 176 inserted into the support main 110 may protrude.

Although not clearly shown in the drawings, the reflective sheet 122, the cover bottom 150, and the support main 110 are respectively provided from the fitting protrusion 174 and the side protruding downward from the bottom surface of the lamp holders 170, respectively. The fitting hole 180 through which the at least one pair of fitting ends 176 protruding from the side may be inserted therethrough, thereby stably fixing the fluorescent lamp 130.

On the other hand, the lamp holders 170 according to the present invention wrap and fix the bent portion of the L-shaped or U-shaped fluorescent lamp 130 from the top to the bottom, thereby minimizing the possibility of damage and easy disassembly and assembly through For the sake of clarity, the method of coupling the liquid crystal display module according to the present invention will be briefly described only with reference to FIGS. 4 to 7.

First, the cover bottom 150 is coupled to the back of the support main 110, in which case the lamp holders 170 are not yet coupled to each other. Subsequently, the reflective sheet 122 is seated into the support main 110, and an L-shaped or U-shaped fluorescent lamp 130 is inserted along at least two edges thereof, and then the lamp according to the present invention is bent at the bent portion of the fluorescent lamp. The holder middle 170 is seated respectively so that the fluorescent lamp 130 is accommodated in the insertion groove 172 and the cover protrusion 150 and the fitting end 176 or the side fitting 176 of the bottom surface are respectively received. Insert and fasten to the corresponding fitting hole 180 of the support main 110.

In this case, since the lamp holders 170 are fastened after the arrangement of the fluorescent lamp 130 in the present invention, there is no room for physical interference and contact with the distal end of the reflective sheet 122, and as a result, the fluorescent lamp is stable and easy. 130 can be assembled and fixed.

In addition, there is a stopper protrusion 112 vertically branched inwardly from the upper end of the support main 110 to maintain the bending form of the second bending portion 126 of the reflective sheet 122. In the present invention, there is no risk of damage due to physical interference with the distal end of the reflective sheet 122 when the fluorescent lamp 130 is assembled. Therefore, the stopper protrusion 112 has a larger length (T '> T: see FIG. 2) than before. The expansion is possible, and as a result, the problem of hearing the distal end of the reflective sheet 122 can be completely solved, thereby minimizing the loss of light.

The liquid crystal display device module according to the present invention described above has an advantage that the assembly and disassembly of the fluorescent lamp can be performed more easily and simply with the stable fixing of the fluorescent lamp.

That is, the liquid crystal display module according to the present invention is combined as if the lamp holders are wrapped from the top to the bottom after the arrangement of the fluorescent lamp to reduce the possibility of breakage of the fluorescent lamp in the assembly process to a minimum, both sides for fixing Instead of mobilizing a tape or the like, the fitting protrusion and the fitting end are used, which makes the process of assembly and disassembly easier and simpler.

In addition, the liquid crystal display module according to the present invention has the advantage of reducing the loss of light can be maintained in a stable bending state of the reflective sheet.

Claims (14)

A support frame having a rectangular frame shape; A fluorescent lamp bent in an L or U shape to be arranged along at least two inner edges of the support main; A light guide plate interposed on the same plane as the fluorescent lamp; A plurality of optical sheets seated on the light guide plate; A liquid crystal panel seated on the plurality of optical sheets; A cover bottom adhered to the back of the support main; At least one lamp holder coupled to the cover bottom while surrounding the bent portion of the fluorescent lamp from above; And a top cover bordering the edge of the liquid crystal panel and coupled to the support main and the cover bottom. The method of claim 1, And an insertion groove for receiving the bent portion of the fluorescent lamp into the bottom surface of the lamp holders. The method of claim 2, And at least one fitting protrusion protruding downward from the bottom of the lamp holders into the cover bottom. The method of claim 3, wherein And at least one fitting end protruding from the side of the lamp holders to be inserted into the support main. The method according to any one of claims 1 to 4, wherein And a reflective sheet interposed between the light guide plate and the fluorescent lamp and the cover bottom. The method of claim 5, The end portion of the reflective sheet corresponding to the fluorescent lamp is firstly bent vertically upward between the fluorescent lamp and the support main and then bent inward to surround the fluorescent lamp from the outside. . The method of claim 6, The upper end of the support main liquid crystal display module further comprises a plurality of stopper projections vertically branched inward to maintain the secondary bent state of the reflective sheet. a) providing a cover bottom; b) coupling a support frame having a rectangular frame shape to the edge of the cover bottom; c) arranging a fluorescent lamp bent in an L or U shape along at least two inner edges of the support main; d) fastening at least one lamp holder to the cover bottom to cover the bent portion of the fluorescent lamp from above to below; e) mounting a light guide plate on an inner side of the cover bottom inside the fluorescent lamp; f) interposing a plurality of optical sheets in front of the light guide plate and the fluorescent lamp; g) mounting a liquid crystal panel on the front surface of the plurality of optical sheets; and h) coupling the top cover bordering the edge of the liquid crystal panel to the support main and cover bottom. The method of claim 8, And an insertion groove for receiving the bent portion of the fluorescent lamp into the bottom surface of the lamp holders. The method of claim 9, And at least one fitting protrusion protruding downward from the bottom of the lamp holders into the cover bottom. The method of claim 10, And at least one fitting end protruding from the side of the lamp holders to be inserted into the support main side. 12. The method according to any one of claims 8 to 11, wherein And after step b) and before step c), interposing a reflective sheet on the cover bottom. The method of claim 12, An end portion of the reflective sheet corresponding to the fluorescent lamp is first bent vertically upward between the fluorescent lamp and the support main and then bent inward to surround the fluorescent lamp from the outside. Manufacturing method. The method of claim 13, And a plurality of stopper protrusions vertically branched inward to maintain the secondary bent state of the reflective sheet at the upper end of the support main.

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