KR20090126891A - Support main and liquid crystal display device module including the same - Google Patents

Abstract

PURPOSE: A double support main and an LCD(Liquid Crystal Display) module for reducing weight are provided to easily perform a support main forming process by forming a dual support main by using an adhesive material. CONSTITUTION: A first frame(130a) has a rectangle frame shape and a first width. A second frame(130b) is combined through the first frame and adhesive material. The wide second width is compared with the first width. An inner side and an upper side of the first frame are exposed to the outside. The first frame and the second frame are opened to one side of the frame and protrudes a guide edge.

Description

Support main and liquid crystal display device module including the same

The present invention relates to a liquid crystal display module, and more particularly, to a support main body of a liquid crystal display module capable of light weight and thinness.

In line with the recent information age, the display field has also been rapidly developed, and a liquid crystal display device (FPD) is a flat panel display device (FPD) having advantages of thinning, light weight, and low power consumption. LCD, plasma display panel device (PDP), electroluminescence display device (ELD), field emission display device (FED), etc. : It is rapidly replacing CRT.

Among them, liquid crystal display devices are most actively used in the field of notebooks, monitors, TVs, etc. due to their excellent contrast ratio and high contrast ratio. The liquid crystal display device is a device that does not have its own light emitting element. Will require a light source.

As a result, a backlight unit having a lamp is provided on the rear side to irradiate light toward the front of the liquid crystal panel, thereby realizing an image of identifiable luminance.

1 is a cross-sectional view of a typical liquid crystal display module.

As illustrated, a general liquid crystal display device module includes a liquid crystal panel 10, a backlight unit 20, a support main 30, a cover bottom 40, and a top cover 50.

The liquid crystal panel 10 is a part that plays a key role in image expression and is composed of first and second substrates 12 and 14 bonded to each other with a liquid crystal layer interposed therebetween. First and second polarizing plates 19a and 19b are attached to upper and lower surfaces of the liquid crystal panel 10, and a backlight unit 20 is provided behind the liquid crystal panel 10.

In this case, the backlight unit 20 includes a lamp 24 arranged along the longitudinal direction of at least one edge of the support main 30, a white or silver reflecting plate 22 seated on the cover bottom 40, and the reflecting plate. A light guide plate 26 seated on 22 and a plurality of optical sheets 28 interposed thereon are included.

At this time, the lamp guide 33 is further provided to guide the lamp 24.

The liquid crystal panel 10 and the backlight unit 20 have a top cover 50 covering the top edge of the liquid crystal panel 10 and the back surface of the backlight unit 20 in a state where the edges are surrounded by the support main 30 having a rectangular frame shape. Cover cover 40 to cover each is coupled in front and rear are integrated through the support main 30 as a medium.

As a result, the light emitted from the lamp 24 is incident on the light incident part of the light guide plate 26 and refracted in the direction of the liquid crystal panel 10, and processed to a high quality of uniform brightness while passing through the plurality of optical sheets 28. Incident on the liquid crystal panel 10, the liquid crystal panel 10 displays an image to the outside.

On the other hand, the liquid crystal display device has recently been widely used, such as mobile navigation, vehicle navigation, PMP , and MP-3. It is actively underway.

However, despite efforts to fabricate a liquid crystal display device in a light weight and thin form, the thickness and volume of each of the components constituting the liquid crystal display device are hindering the thin and light weight of the liquid crystal display device.

In particular, the support main 30 having a rectangular frame shape including the jaw 31 separating the positions of the backlight unit 20 and the liquid crystal panel 10 is manufactured by injection molding with synthetic resin, and its structure is complicated by injection molding. Due to process limitations, manufacturing is difficult at a thickness of less than 0.5mm.

The present invention has been made to solve the above problems, and an object of the present invention is to realize the light weight and thinness of a liquid crystal display device.

In order to achieve the object as described above, the present invention is a rectangular frame shape, the first frame having a first width; A rectangular frame shape adhesively bonded to the first frame through an adhesive material, the second frame having a second width wider than the first width, the first frame is characterized in that the inner upper surface is exposed Provide support main

The first width is 1.2 to 2 times wider than the second width, the first and the second frame is characterized in that the edge is opened, the guide end is configured to protrude.

In addition, the present invention cover cover; A backlight unit seated on the cover bottom; A liquid crystal panel mounted on an upper portion of the backlight unit; A support main frame having a rectangular frame shape surrounding edges of the backlight unit and the liquid crystal panel, the first frame having a first width and a second frame having a second width wider than the first width; A top cover that surrounds the top edge of the liquid crystal panel and is coupled to the support main and the cover bottom, wherein the first frame exposes an inner top surface, and the bottom edge of the liquid crystal panel exposes the first frame. It provides a liquid crystal display module characterized in that supported by the inner upper surface.

The first and second frames are adhesively bonded to each other through an adhesive material, and the first width is 1.2 to 2 times wider than the second width.

The thickness of the first frame may correspond to the thickness of the backlight unit, and the thickness of the second frame may correspond to the thickness of the liquid crystal panel.

As described above, according to the present invention by forming the support main is divided into the first and second frame having a simple structure and then bonded to each other in the process of modularization through an adhesive material such as double-sided tape to form a double support main, Compared to the support main molding process can be made easily.

In particular, since the structure is simple, the first and second frames can be formed to have a very thin thickness, and thus the first and second frames can be formed according to the thicknesses of the liquid crystal panel and the backlight unit, which are gradually thinner due to light weight and thinning. It has an effect.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

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

As shown, the liquid crystal display module includes a liquid crystal panel 110, a backlight unit 120, a dual support main 130, a cover bottom 140, and a top cover 150.

First, the liquid crystal panel 110 plays a key role in image expression and includes a first substrate 112 and a second substrate 114 bonded to each other with the liquid crystal layer interposed therebetween.

At this time, although not shown in the drawings under the premise of an active matrix method, a plurality of gate lines and data lines intersect each other and a pixel is defined on an inner surface of the first substrate 112, which is commonly referred to as a lower substrate or an array substrate. Thin film transistors (TFTs) are provided at the intersections of the transistors and are in one-to-one correspondence with transparent pixel electrodes formed in each pixel.

In addition, the inner surface of the second substrate 114 called the upper substrate or the color filter substrate may correspond to each pixel, for example, a color filter of red (R), green (G), and blue (B) color, and each of them. A black matrix covering the non-display elements such as gate lines, data lines, and thin film transistors is provided. In addition, a transparent common electrode covering them is provided.

In addition, the printed circuit board 117 is connected through at least one edge of the liquid crystal panel 110 through a connection member 115 such as a flexible circuit board or a tape carrier package (TCP). The side surface of the support main 130 or the cover bottom 140 is properly folded to be in close contact.

In addition, although not clearly shown in the drawings, the upper and lower alignment layers for determining the initial molecular alignment direction of the liquid crystal are interposed between the two substrates 112 and 114 of the liquid crystal panel 110 and the liquid crystal layer, and filled therebetween. Seal patterns are formed along edges of both substrates 112 and 114 to prevent leakage of the liquid crystal layer.

In this case, upper and lower polarizers (not shown) are attached to outer surfaces of the first and second substrates 112 and 114, respectively.

Accordingly, in the liquid crystal panel 110 having the above-described structure, when the thin film transistor selected for each gate line is turned on by the on / off signal of the gate driver circuit which is scanned and transmitted, the signal voltage of the data driver circuit is applied to the corresponding pixel through the data line. The direction of the liquid crystal molecules is changed by the electric field between the pixel electrode and the common electrode.

A backlight unit 120 for supplying light is provided on a rear surface of the liquid crystal panel 110 such that a difference in transmittance of the liquid crystal panel 110 is expressed to the outside.

The backlight unit 120 includes a lamp 124 arranged along at least one edge length direction of the dual support main 130, a white or silver reflecting plate 122 seated on the cover bottom 140, and a reflecting plate ( 122 includes a light guide plate 126 seated on and a plurality of optical sheets 128 interposed thereon.

In addition, although not shown in the drawings may further include a lamp guide for guiding the lamp 124, the lamp guide surrounding the upper and lower and the outside of the lamp 124 in an open state toward the light guide plate 126, In addition to the protection of the lamp 124, the light is concentrated in the direction of the dual support main 130.

In this case, as the light source, the lamp 124 may be a fluorescent lamp such as a cold cathode fluorescent lamp or an external electrode fluorescent lamp.

Alternatively, in addition to the fluorescent lamp, a light-emitting diode lamp may be used as the lamp 124. When the light-emitting diode lamp is used, the lamp guide may be omitted.

At this time, the light guide plate 126 evenly spreads the light incident from the lamp 124 to the wide area of the light guide plate 126 while traveling inside the light guide plate 126 by a plurality of total reflections. Provide a light source. The light guide plate 126 may include a pattern of a specific shape on the rear surface to supply a uniform surface light source.

In addition, the reflector plate 122 is positioned on the rear surface of the light guide plate 126 to improve the brightness of the light by reflecting the light passing through the rear surface of the light guide plate 126 toward the liquid crystal panel 110.

The optical sheet 128 on the light guide plate 126 includes a diffusion sheet and at least one light collecting sheet, and diffuses or collects light passing through the light guide plate 126 to provide a more uniform surface light source to the liquid crystal panel 110. Let it enter.

The liquid crystal panel 110 and the backlight unit 120 are modularized through the top cover 150, the dual support main 130, and the cover bottom 140, and the top cover 150 is formed on the top surface of the liquid crystal panel 110. A rectangular frame having a cross section bent in a shape of “a” so as to cover a side edge thereof is formed to open an entire surface of the top cover 150 to display an image implemented in the liquid crystal panel 110.

In addition, the cover bottom 140 on which the liquid crystal panel 110 and the backlight unit 120 are seated, and which is the basis for assembling the entire structure of the liquid crystal display device module, has a rectangular plate shape and vertically bends the four edges thereof. Configure.

In addition, the double support main 130 having a rectangular frame shape seated on the cover bottom 140 and covering the edges of the liquid crystal panel 110 and the backlight unit 120 may be formed of the top cover 150 and the cover bottom 140. Combined.

In this case, the top cover 150 may be referred to as a case top or top case, and the cover bottom 140 may be referred to as a bottom cover or a lower cover.

At this time, the present invention is characterized in that it consists of a dual support main 130 consisting of the first and second frames 130a, 130b having different thicknesses and widths. This will be described in more detail with reference to FIGS. 3A to 3B below.

3A to 3B are perspective views schematically showing the structure of the dual support main according to the embodiment of the present invention.

As shown, the dual support main 130 is divided into first and second frames 130a and 130b, respectively, and the first and second frames 130a and 130b are adhesive materials such as a double-sided tape (not shown). Bonded to each other through the bonding.

Looking at this in more detail, the overall shape of the first and second frames (130a, 130b) is a rectangular frame shape of the third of both sides adjacent to the first and second edges (131a, 131b, 133a, 133b facing each other) And fourth edges 135a, 135b, 137a, 137b.

Here, the first edges 131a and 131b of the first and second frames 130a and 130b may have openings 139a and 139b. For this purpose, the third edges adjacent to the first edges 131a and 131b may be used. The guide ends may protrude in a direction facing each other from end portions of the fourth edges 135a, 135b, 137a, and 137b, that is, toward the openings 139a and 139b of the first edges 131a and 131b.

In this case, the lamp (124 of FIG. 2) of the backlight unit 120 of FIG. 2 may be easily mounted through the openings 139a and 139b of the first frames 131a and 131b in a subsequent modularization process.

The first and second frames 130a and 130b have a rectangular frame shape and are configured by injection molding through synthetic resin.

In this case, the edges 131a, 131b, 133a, 133b, 135a, 135b, 137a, and 137b of the first frame 130a and the second frame 130b do not affect the overall stiffness of the support main 130. Form different widths within each other.

That is, each of the edges 131a, 133a, 135a, and 137a of the first frame 130a has a constant width w1 to support a portion of the rear surface of the edge of the liquid crystal panel 110 of FIG. 2 and the second frame 130b. Each edge (131b, 133b, 135b, 137b) of the () is configured to have a narrow width (w2) compared to the edge width (w1) of the first frame (130a).

In this case, the overall size of the first and second frames 130a and 130b, that is, the outer periphery is the same, but only the widths of the edges 131a, 131b, 133a, 133b, 135a, 135b, 137a, and 137b are different.

For this reason, as shown in FIG. 3B, when the first and second frames 130a and 130b are adhesively bonded to each other, each edge 131a, 133a, 135a, and 137a is thicker than the second frame 130b (w1). Each edge 131a, 133a, 135a, and 137a of the first frame 130a having the () is exposed to the inside of the dual support main 130.

Accordingly, the double support main 130 through the exposed portion of the first frame 130a has a jaw 138 separating the positions of the backlight unit 120 and the liquid crystal panel 110 of FIG. 2 along the inner edge. By having a, it can be to support the liquid crystal panel (110 in FIG. 2) to the upper surface of the jaw 138.

Thus, the innermost layer of the first frame 130a includes a reflector (122 in FIG. 2), a light guide plate (126 in FIG. 2), a plurality of optical sheets (128 in FIG. 2), and a backlight (124 in FIG. 2). The unit (120 of FIG. 2) is mounted, and the first frame 130a surrounds the circumference.

The rear surface of the liquid crystal panel 110 (see FIG. 2) is supported and stacked on the upper portion of the first frame 130a, that is, the exposed tuck 138 of the first frame 130a. The edge is surrounded by the second frame 130b.

As such, since the first and second frames 130a and 130b have a very simple structure, an injection molding process for forming the first and second frames 130a and 130b may be easily performed.

In particular, because of the simple structures of the first and second frames 130a and 130b, molding is possible even with thicknesses d1 and d2 of at least 0.1 mm, respectively.

That is, the conventional support main (30 of FIG. 1) was difficult to manufacture with a thickness of 0.5 mm or less due to the complicated structure and the limitation on the injection molding process, but according to the first and second embodiments of the present invention. The frames 130a and 130b may be injection molded to have a simple structure and have a thickness d1 and d2 of at least 0.1 mm, respectively.

Therefore, even when the first and second frames 130a and 130b are adhesively bonded to each other, they have a thickness of at least 0.2 mm, so that the thickness of the support frame (30 in FIG. 1) may be reduced by about 0.3 mm.

As a result, the first and second frames 130a and 130b may correspond to the thicknesses of the liquid crystal panel (110 of FIG. 2) and the backlight unit (120 of FIG. 2), which are gradually thinner due to light weight and thickness. .

In this case, the thickness d1 of the first frame 130a is formed to correspond to the thickness of the backlight unit 120 of FIG. 2, and the thickness d2 of the second frame 130b is the liquid crystal panel 110 of FIG. 2. It is preferable to form corresponding to the thickness of.

4 is a schematic cross-sectional view of some cross-section of FIG. 2 modularized.

As illustrated, the reflective plate 122, the light guide plate 126, a lamp (not shown) along one side of the light guide plate 126, and a plurality of optical sheets 128 are stacked on the light guide plate 126. The backlight unit 120 is formed.

In addition, the liquid crystal panel 110 having a liquid crystal layer (not shown) interposed therebetween is disposed between the backlight unit 120 and the first and second substrates 112 and 114 and the first and second substrates. Polarizing plates 119a and 119b are attached to the outer surfaces of the 112 and 114, respectively.

The backlight unit 120 and the liquid crystal panel 110 are surrounded by edges by the dual support main 130, and the cover bottom 140 is coupled to the back thereof, and the top that surrounds the upper edge and the side of the liquid crystal panel 110 is formed. The cover 150 is coupled to the dual support main 130 and the cover bottom 140.

Therefore, the light emitted from the lamp (not shown) is incident to the light incident portion of the light guide plate 126 and then refracted toward the liquid crystal panel 110 therein, and the plurality of optical rays together with the light reflected by the reflection plate 122. While passing through the sheet 128 is processed into a more uniform surface light source of high quality is supplied to the liquid crystal panel 110.

In this case, the dual support main 130 has a wider width w1 than the second frame 130b in a state in which the first and second frames 130a and 130b are adhesively bonded through an adhesive material 200 such as a double-sided tape. Some edges of the first frame (130a) having a) is exposed so that the first and second frames (130a, 130b) have a jaw 138 to the inner side.

In this case, the width w1 of the first frame 130a may be about 1.2 to 2 times thicker than the width w2 of the second frame 130b.

Accordingly, a part of the rear surface of the liquid crystal panel 110 is supported by the exposed tuck 138 upper surface of the first frame 130a, and the liquid crystal panel 110 and the backlight unit 120 are provided with the first and second frames 130a. 130b) defines its position.

In this case, the thickness d1 of the first frame 130a may be equal to or greater than the thickness of the reflector 122, the light guide plate 126, and the plurality of optical sheets 128 of the backlight unit 120. The thickness d2 of the second frame 130b may be equal to or greater than the thickness of the liquid crystal panel 110.

Accordingly, the thicknesses d1 and d2 of the first and second frames 130a and 130b may correspond to the thicknesses of the backlight unit 120 and the liquid crystal panel 110. That is, the dual support main body 130 of the present invention may be changed to a thickness of at least 0.2 mm corresponding to the thicknesses of the liquid crystal panel 110 and the backlight unit 120 varying according to the model to be used.

As described above, the support main 130 that forms the edges of the liquid crystal panel 110 and the backlight unit 120 is formed by dividing the first and second frames 130a and 130b having a simple structure, and then bonding such as a double-sided tape. By forming a double support main 130 by adhesively bonding to each other in the modularization process through the material 200, the first and second frames (130a, 130b) manufactured by the actual injection molding method has a very simple structure, The molding process for forming the support main 130 may be easier than in the related art.

In particular, since the structure is simple, the first and second frames 130a and 130b may be molded to have a thickness of 0.1 mm, respectively, so that the support main 130 having a thickness of at least 0.2 mm (d1 and d2 of FIG. 3a). Can be provided.

For this reason, according to the thickness of the liquid crystal panel 110 and the backlight unit 120 which are becoming thin gradually by light weight and thickness in recent years, it can be comprised correspondingly to at least 0.2 mm thickness d1, d2 or more.

Meanwhile, in the above description and the accompanying drawings, the backlight unit 120 is called a side light method, and a plurality of lamps (124 of FIG. 2) are disposed along an inner length direction of one edge of the dual support main 130. It may be arranged in a plurality of layers, it is also possible to be arranged side by side along the inner longitudinal direction of both edges of the dual support main 130 facing each other.

In addition, a direct type in which a plurality of lamps (not shown) are arranged side by side on the upper front surface of the reflective plate 122 may be possible. In this case, the light guide plate 126 may be omitted.

In addition, the support main 130 may be referred to as a guide panel, a main support, or a mold frame.

The present invention is not limited to the above embodiments, and various modifications can be made without departing from the spirit of the present invention.

1 is a cross-sectional view of a typical liquid crystal display module.

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

3a to 3b are perspective views schematically showing the structure of a dual support main according to an embodiment of the present invention.

4 is a schematic cross-sectional view of a partial cross section of FIG. 2 modularized;

Claims (8)

A first frame having a rectangular frame shape and having a first width; A second frame having a rectangular frame shape adhesively bonded to the first frame through an adhesive material and having a second width wider than the first width; The first frame has a support main, characterized in that the inner top surface is exposed. The method of claim 1, The first main width is 1.2 to 2 times wider than the second width. The method of claim 1, The main frame of claim 1, wherein one edge of the first frame and the second frame is opened to guide the guide end. Covertum; A backlight unit seated on the cover bottom; A liquid crystal panel mounted on an upper portion of the backlight unit; A support main frame having a rectangular frame shape surrounding edges of the backlight unit and the liquid crystal panel, the first frame having a first width and a second frame having a second width wider than the first width; A top cover that covers an upper edge of the liquid crystal panel and is coupled to the support main and the cover bottom Wherein the first frame has an inner top surface exposed, and a rear edge of the liquid crystal panel is supported by the exposed inner top surface of the first frame. The method of claim 4, wherein And the first and second frames are adhesively bonded to each other through an adhesive material. The method of claim 4, wherein And the first width is about 1.2 to 2 times wider than the second width. The method of claim 4, wherein And a thickness of the first frame corresponds to a thickness of the backlight unit. The method of claim 4, wherein And a thickness of the second frame corresponds to a thickness of the liquid crystal panel.

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