KR20170133663A - Guide panel, cover bottom and display device having the same - Google Patents

Abstract

Embodiments of the present invention disclose a guide panel, a cover bottom, and a display device including the same. The guide panel comprises supporting parts on each of an upper surface and a lower surface of the guide panel, and at least one groove. The cover bottom has a multiple bending structure. To this end, a warpage phenomenon of the cover bottom coupled to the guide panel can be prevented, and manufacturing costs can be reduced.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a guide panel, a cover bottom,

The present embodiments relate to a guide panel, a cover bottom, and a display device including the same.

Due to the rapid development of the semiconductor industry in recent years, liquid crystal display devices have become smaller, lighter, and more powerful in performance. The liquid crystal display device has advantages such as miniaturization, light weight, and low power consumption and has been attracting attention as an alternative means to overcome the disadvantages of the CRT. Currently, the liquid crystal display is mounted on almost all information processing devices requiring a display device In fact.

The liquid crystal display device is roughly divided into a display panel, a guide panel, a backlight unit, a driving circuit, a top cover, and a cover bottom.

The display panel receives light from the lower surface to implement an image, and the backlight unit functions to supply light to the display panel. At this time, the backlight unit is composed of a light source for supplying light, a printed circuit board (PCB), a light guide plate, a reflective sheet, and a plurality of optical sheets. The guide panel supports the display panel at the edge of the back of the display panel and guides the side of the display panel to fix the display panel. Further, the top cover covers the front edge of the display panel, and the top cover serves to receive the backlight unit and cover the back surface of the backlight unit.

At this time, the guide panel may be formed of a metal material, a plastic material, or an injection molding method. In the injection molding method described above, a mold embodying the outline of the guide panel is prepared, and the guide panel is manufactured in accordance with the mold by injecting the plastic resin-based raw material between at least two of the upper and lower cores.

On the other hand, when the resin flows into the inside of the mold from the injection machine, since the cooling is performed from the wall surface of the mold, the orientation of the molecules becomes longer and the flow of the resin in the central region of the mold becomes faster. At this time, there is a difference in the molecular orientation between the mold wall surface region and the central region inside the mold.

Here, the contraction of the molded article may occur when the molecules of the resin relax the orientation in the cooling process and return to the original state. Further, even after injection of the resin, the molded article, that is, the guide panel may shrink due to the temperature difference between the resin central region and the resin outer region. Further, while the guide panel is cooled after being cooled after the injection, the cover bottom on which the guide panel is fastened can also be deformed.

As described above, when the cover bottom which is fastened to the guide panel and the guide panel is warped, the flatness of the product is lowered. This is pointed out as a major problem causing light leakage by causing panel interference.

In order to solve the above-described problems, the embodiments of the present invention can be applied to a case where the shape of the guide panel and the cover bottom is changed so as to suppress shrinkage during injection of the guide panel and to improve the rigidity of the cover bottom, A cover bottom, and a display device including the same.

The guide panel, the cover bottom, and the display device including the guide panel, the cover bottom and the cover bottom according to an embodiment include a first support portion for supporting a part of the display panel. In addition, the guide panel, the cover bottom, and the display device including the guide panel according to an embodiment include at least one first groove provided on the same plane as the first support portion. In addition, the guide panel, the cover bottom, and the display device including the guide panel according to an embodiment of the present invention include at least one second groove provided on the opposite surface having the first support portion. In addition, the guide panel, the cover bottom, and the display device including the guide panel, according to an embodiment of the present invention, include a second support portion provided on the same plane as the second groove. The first groove and the second groove are grooves surrounded by the first surface, the second surface and the third surface, respectively. The first surface of the first groove and the second groove extend in the horizontal direction. The second surface and the third surface may have a predetermined slope with respect to the horizontal direction.

Further, the guide panel, the cover bottom, and the display device including the same according to another embodiment include a rectangular cover bottom. Here, the rectangular cover bottom includes a first region and a second region extending in the horizontal direction, and a third region connected to one end of each of the first region and the second region and extending in the vertical direction 1 Cover Bottom. In addition, the rectangular cover bottom includes a fourth region extending in the horizontal direction, and a second cover bottom formed of a fifth region connected to one end of the fourth region and extending in the vertical direction. Here, on at least one side of the cover bottom according to another embodiment, the first cover bottom and the second cover bottom may be disposed apart from each other.

Further, a guide panel, a cover bottom, and a display device including the same according to another embodiment include a display panel. Further, a guide panel, a cover bottom, and a display device including the same according to another embodiment include an optical sheet, a light guide plate, and a reflector disposed on the back surface of the display panel. Further, a guide panel, a cover bottom, and a display device including the same according to another embodiment include a light source assembly disposed on at least one side of the light guide plate. According to another embodiment of the present invention, there is provided a guide panel, a cover bottom, and a display device including the guide panel, the cover bottom, and the display device including the guide panel. In addition, the guide panel, the cover bottom, and the display device including the same according to another embodiment include a cover bottom which is fastened to the guide panel and is composed of first and second cover bottoms. Here, the guide panel includes a first support portion for supporting a part of the display panel, at least one first groove provided on the same surface as the first support portion, a second support portion provided on the opposite surface having the first support portion, Wherein the first groove and the second groove are grooves surrounded by the first surface, the second surface and the third surface, respectively, wherein the first surface of at least one of the first groove and the second groove has a horizontal Direction and the second and third surfaces may have a predetermined slope with respect to the horizontal direction.

The guide panel, the cover bottom, and the display device including the guide panel according to the present embodiments include a support portion and at least one groove on each of the upper and lower surfaces of the guide panel, thereby reducing the sectional area of the guide panel, Can be reduced.

In addition, the guide panel, the cover bottom, and the display device including the guide panel according to the present embodiments have the first and second cover bottoms formed in at least one side of the cover bottom in the 'a' or 'b' It is possible to improve the rigidity by increasing the value of the moment of moment of inertia of the guide panel. Accordingly, it is possible to suppress the deformation of the cover bottom due to the shrinkage phenomenon during cooling of the guide panel.

1 is an exploded perspective view schematically showing the structure of a display device according to the present embodiments.
2 is a plan view of the cover bottom according to the present embodiment.
3 is a cross-sectional view taken along line YZ in Fig.
4 is a plan view showing a part of a cover bottom and a guide panel according to the present embodiment.
5 is a cross-sectional view taken along line LM of FIG.
6 is a sectional view of the guide panel according to the first embodiment.
7 is a sectional view of the guide panel according to the second embodiment.
8 is a sectional view of the guide panel according to the third embodiment.
9 is a plan view showing the back surface of the cover bottom to which the guide panel according to the present embodiment is fastened.
10 is a view comparing the cross-sectional structures of the guide panel and the cover bottom according to the comparative example and the embodiment.
11 is a table comparing the effects of the guide panel and the cover bottom according to the comparative example and the example.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following embodiments are provided by way of example so that those skilled in the art can fully understand the spirit of the present invention. Therefore, the present invention is not limited to the embodiments described below, but may be embodied in other forms. In the drawings, the size and thickness of the device may be exaggerated for convenience. Like reference numerals designate like elements throughout the specification.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. However, it is to be understood that the present invention is not limited to the disclosed embodiments, but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification. The dimensions and relative sizes of the layers and regions in the figures may be exaggerated for clarity of illustration.

It will be understood that when an element or layer is referred to as being another element or "on" or "on ", it includes both intervening layers or other elements in the middle, do. On the other hand, when a device is referred to as "directly on" or "directly above ", it does not intervene another device or layer in the middle.

The terms spatially relative, "below," "lower," "above," "upper," and the like, And may be used to easily describe the correlation with other elements or components. Spatially relative terms should be understood to include, in addition to the orientation shown in the drawings, terms that include different orientations of the device during use or operation. For example, when inverting an element shown in the figures, an element described as "below" or "beneath" of another element may be placed "above" another element. Thus, the exemplary term "below" can include both downward and upward directions.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the components from other components, and the terms do not limit the nature, order, order, or number of the components.

1 is an exploded perspective view schematically showing the structure of a display device according to the present embodiments. 1, the display device according to the present embodiment includes a display panel 610, a driving unit 620 for driving the display panel 610, a display panel 610 installed on the rear surface of the display panel 610, And a guide panel for receiving and fixing the display panel 610 and the backlight unit. At this time, at least one driver 600 may be connected to the display panel 610 through a connection member 621. [

The display panel 610 may be a liquid crystal display panel. The display panel 610 may include a color filter array substrate 612 and a thin film transistor (TFT) array (Not shown) including a substrate 611 and interposed between the color filter array substrate 612 and the thin film transistor array substrate 611. [

A common electrode and a pixel electrode are formed on the display panel 610 to which the color filter array substrate 612 and the thin film transistor array substrate 611 are bonded to apply an electric field to the liquid crystal layer. When the voltage of the data signal applied to the electrode is controlled, the liquid crystal of the liquid crystal layer rotates by dielectric anisotropy according to the electric field between the common electrode and the pixel electrode, thereby transmitting or blocking light for each pixel to display characters or images .

In order to control the voltage of the data signal applied to the pixel electrode on a pixel-by-pixel basis, a switching element such as a thin film transistor is individually provided in the pixels. Upper and lower polarizers (not shown) can be attached to the outside of the display panel 610, and the lower polarizer polarizes the light passing through the backlight unit. The upper polarizer passes through the display panel 610 Polarizes the light.

A light source assembly including a light source array 125b for generating light on at least one side of a light guide plate 320 is disposed, and the light guide plate (light guide plate) The wavelength conversion sheet 200 disposed on the upper surface of the light guide plate 320 and the plurality of optical sheets 430 disposed on the wavelength conversion sheet 200 have. Here, the light source may be a light emitting diode (LED), but the present embodiment is not limited thereto. The display panel 610 and the guide panel 520 and the backlight unit are mounted on the lower cover bottom 500 and the lower panel 500. [ And are coupled to each other by a case top (not shown) at the top to constitute a display device.

On the other hand, the plurality of optical sheets 430 include a diffusion sheet and upper and lower prism sheets, and a protective sheet can be further added. The diffusion sheet disperses the light incident from the light guide plate 320 to prevent the light from being partially densely packed to prevent unevenness in the image displayed on the display panel 100. The angle of the light incident from the light guide plate 320 is perpendicular Refract.

The upper and lower prism sheets collect light incident from the diffusion sheet and uniformly distribute the light on the entire surface of the display panel 100. In addition, the protective sheet protects the optical sheet 430 sensitive to dust and scratches, and can prevent the optical sheets 430 from flowing when the backlight unit is carried.

At this time, the light source assembly includes a light source PCB (Printed Circuit Board) (not shown) that drives the light source array 125b and the light source array 125b. On the other hand, a plurality of light sources may be provided on the light source printed circuit board at regular intervals.

The light source assembly 120 is mounted on the light source housing 120. In addition to the light source assembly 120, the light source housing 120 can concentrate light emitted from a plurality of light sources toward the light guide plate 320 to prevent light loss. In addition, the light source housing 120 may serve to improve the heat radiation effect of the light source assembly.

The light emitted from the light source array 125b is incident on the side surface of the light guide plate 320 and the reflection plate 410 disposed on the back surface of the light guide plate 320 guides the light transmitted through the back surface of the light guide plate 320 to the light guide plate 320, So that light is emitted in the direction of the display panel 100.

A cover bottom 500 is disposed on the back surface of the light guide plate 320. Then, the cover bottom 500 and the guide panel 520 can be coupled to each other. The guide panel 520 surrounds the edge of the display panel 610 and can support and protect the display panel 610 from the rear surface of the display panel 520.

Meanwhile, the guide panel 520 may be formed by an injection molding method. In the injection molding method, two molds are integrally installed in an injection molding machine in such a manner that two resins (or resins having different colors) are applied to a single component, injection molded into a primary mold, The mold is rotated 180 degrees so that a secondary resin can be injected into the primary molding space.

In general, the guide panel 520 has a shape having a support portion for supporting the display panel 610 on one side. In some cases, the guide panel 520 may have a divided structure divided into sections for suppressing shrinkage after injection.

However, even when the guide panel 520 is formed in the above-described shape, there is a problem that the shape of the guide panel 520 is deformed and the flatness of the product is defective. Specifically, the shape of the guide panel 520 may be deformed due to a residual stress due to a difference in shrinkage ratio of the material of the guide panel 520. Here, the residual stress refers to the stress remaining in the material even when the external force is removed after the material is deformed due to the nonuniform deformation.

At this time, the difference in shrinkage rate may occur due to the temperature difference of the mold surface into which the resin is introduced or the difference in the orientation direction of the resin flowing into the mold. When the resin is injected into the mold, the flow of the resin in the mold and the flow of the resin in the wall of the mold are different from each other, so that the shear stress acts, Refers to the direction in which the molecules of the molecules are arranged side by side in the direction in which shear stress acts.

Concretely, when the resin flows into the mold from the injection machine, cooling is performed from the wall surface of the mold, so that the orientation of the molecules becomes longer and the molecular orientation becomes shorter due to the faster flow of resin in the central region of the mold. At this time, there is a difference in the molecular orientation between the mold wall surface region and the central region inside the mold. Here, the contraction of the molded article may occur when the molecules of the resin relax the orientation in the cooling process and return to the original state. Further, even after the injection of the resin, shrinkage of the molded article may occur due to the temperature difference between the resin central region and the resin outer region.

In order to solve such a problem, the display device according to the present embodiment can reduce the amount of resin used by changing the shape of the guide panel by a method for suppressing deformation of the guide panel, that is, It is possible to suppress the deformation of the guide panel by improving the rigidity.

FIG. 2 is a plan view of the cover bottom according to the present embodiment. FIG.

Referring to FIG. 2, the cover bottom 500 according to the present embodiment may have a rectangular shape. The cover bottom 500 may be divided into a first cover bottom 510 and a second cover bottom 515. Here, the second cover bottom 515 may be disposed outside the first cover bottom 510,

At least one side of the cover bottom 500 may be provided with a spacing space 550 between the first cover bottom 510 and the second cover bottom 515. Concretely, at least one side of the first cover bottom 510 may be bent in the 'A' shape in the region where the spacing space 550 is provided, and the second cover bottom 515 may be formed in the ' have.

Thereby, a spacing space 550 may be provided between the first cover bottom 510 and the second cover bottom 515. A guide panel (not shown) according to the present embodiments may be disposed in the spacing space 550 provided between the first cover bottom 510 and the second cover bottom 515. In other words, at least one side of the first cover bottom 510 is bent in a '' shape, and the second cover bottom 515 is formed in a 'C' shape, so that the guide panel (not shown) A space can be provided.

2, the second cover bottom 515 may be connected to the first cover bottom 510 in an edge area of the cover bottom 500. [ Although not shown in the drawing, at least one side of the cover bottom corresponding to a region where the light source assembly including a plurality of light sources is disposed is provided with a spacing space 550 between the first cover bottom 510 and the second cover bottom 515 ) May be provided. Thereby, the light source assembly can be stably mounted.

Specifically, the light source assembly including a plurality of light sources may be attached to one side of the cover bottom 500 through a thermal conductivity tape. With such a structure, the existing light-guide-portion-side guide panel is eliminated, thereby making it possible to induce slimming of the light-entering portion. The cover bottom may further include a support for supporting the light source assembly in an area corresponding to an area where the light source assembly is disposed, but the present embodiment is not limited thereto.

2, the central portion X of the first cover bottom 510 may be a blank region in which the first cover bottom 510 member is not present, but the present embodiment is not limited thereto.

Meanwhile, the insertion hole 540 may be further provided in the first cover bottom 510. At this time, protrusions (not shown) provided on at least one side of the reflection plate (not shown) may be fastened to the insertion hole 540. Here, the shape of the insertion hole 540 may be a polygonal shape, for example, a rectangular shape, but the present embodiment is not limited thereto. However, the protrusion (not shown) of the reflection plate (not shown) and the insertion hole 540 may have the same shape.

This configuration will be described in detail with reference to FIG. 3 and FIG. 4 as follows. 3 is a cross-sectional view taken along line Y-Z in Fig. 4 is a plan view showing a part of a cover bottom and a guide panel according to the present embodiment.

Referring to FIG. 3, the cover bottom 500 according to the present embodiment includes a first cover bottom 510 and a second cover bottom 515, and the first cover bottom 510 and the second cover bottom 515 are spaced apart from each other.

Here, the first cover bottom 510 includes a first area 511, a second area 512, and a third area 513. Here, the first region 511 and the second region 512 extend in the horizontal direction. The first region 511 and the second region 512 are connected through a third region 513 extending in the vertical direction. More specifically, one end of the first region 511 is connected to one end of the third region 513, and the other end of the third region 513 is connected to one end of the second region 512 The first cover bottom 510 can be formed.

At this time, at least one step 525 may be provided in the first region 511 of the first cover bottom 510. As a result, a pressing phenomenon of a reflection plate (not shown) disposed on the cover bottom 500 can be prevented.

The second cover bottom 515 is constituted by a fourth region 516 extending in the horizontal direction and a fifth region 517 extending in the vertical direction. Here, one end of the fourth region 516 and one end of the fifth region 517 are connected to each other to constitute the second cover bottom 515.

The fourth region 516 and the fifth region 517 of the second cover bottom 515 in at least one corner region of the cover bottom 500 are formed in the first cover bottom 510, (See FIG. 2) extending from the first region 511 and the first region 511 in the vertical direction. Thus, the cover bottom 500 according to the present embodiment can be configured.

The shape of the first cover bottom 510 connected to the second region 512 and the third region 513 may be 'A' or 'B'. In addition, the shape in which the fourth region 516 and the fifth region 517 of the second cover bottom 515 are connected may be 'A' or 'B' shape.

More specifically, when the second region 512 of the first cover bottom 510 is connected to the third region 513, the fourth region 516 of the second cover bottom 515 is' And the fifth region 517 are connected to each other. The fourth region 516 of the second cover bottom 515 and the fourth region 516 of the second cover bottom 515 are connected to each other when the second region 512 and the third region 513 of the first cover bottom 510 are ' 5 region 517 may be connected in the 'a' shape.

A shape in which the second area 512 and the third area 513 of the first cover bottom 510 are connected and a shape in which the fourth area 516 and the fifth area 517 of the first cover bottom 515 are connected to each other As described above, there is an effect that the moment of inertia increases and the rigidity of the cover bottom 500 is improved.

Specifically, when increasing the height of the cover bottom in the equation of the moment of inertia, the rigidity of the cover bottom is proportional to the cube of the height. More specifically, controlling the stiffness of the cover bottom is the section modulus of the cover bottom, and in terms of the modulus of section there is a value of the second moment of the section. The relationship between the section modulus and the moment of inertia of the section is as follows.

The section modulus refers to the value obtained by dividing the moment of inertia of the section in the direction of the moment by the height of 2. When the section modulus of the same material is large, the value of the moment of inertia of the section is large and the resistance moment with respect to the moment acting on the force is large. I do not. That is, the greater the second moment of inertia, the greater the stiffness.

In this case, when a rectangle having a width of b and a height of h exists, the cross-sectional area is bh, the height of the center of gravity (center of gravity) is h / 2, the moment of inertia is bh3 / 12 (h: , And the section modulus corresponds to bh2 / 6.

3, the cover bottom 500 according to the present embodiment has an effect of increasing the h value by applying a multiple bending structure in the height direction, The coefficient is increased. The rigidity of the cover bottom 500 can be improved.

As described above, by improving the rigidity of the cover bottom 500, it is possible to suppress the deformation of the cover bottom 500 due to contraction during cooling of the guide panel 520 after the guide panel 520 is injected. That is, even when the guide panel 520 is cooled, the cover bottom 500 hardly bends, thereby improving the flatness of the product, thereby preventing light leakage due to warping.

The cover bottom and the guide panel according to the present embodiment will be described with reference to FIG. Referring to FIG. 4, at least one side of a cover bottom 510 configured in a rectangular shape is provided with a spacing space and an insertion hole 540. Here, the guide panel 520 is provided in the spacing space and the insertion hole 540.

The insertion hole 540 may be provided in a part of the first cover bottom 510 of the cover bottom 500. At this time, the protrusion 411 of the reflection plate 410 is fastened to the insertion hole 540. Thereby, the flow of the reflection plate 410 can be prevented.

The cover bottom 500 provided with the insertion hole 540 according to the present embodiment will be described in detail as follows. The other side surface excluding the side surface extending from the protruding portion 411 to the reflection plate 410 among the side surfaces surrounding the insertion hole 540 formed in the cover bottom 500 may be arranged so as to surround the guide panel 520.

Partial areas 520a and 520b of the guide panel disposed in a partial area of the insertion hole 540 may be configured to generate a step with the guide panel 520 provided in the spacing space. However, It is not. Here, some of the areas 520a and 520b of the guide panel disposed in a part of the insertion hole 540 and the guide panel 520 provided in the spacing space may be integrally formed.

In addition, some areas 520a and 520b of the guide panel, which are provided in a region corresponding to a part of the insertion hole 540, may include at least one groove K. The protrusion 411 of the reflection plate 410 may be seated on the groove K. Each of the partial areas 520a and 520b of the guide panel disposed in a part of the insertion hole 540 may have at least one step for fixing the reflection plate 410. [

On the other hand, a portion of the first cover bottom 510 may be disposed on a portion of the guide panel 520. In this way, the first cover bottom 510 can be supported by the guide panel 520. A portion of the second cover bottom 515 may be disposed under a portion of the guide panel 520 to support the guide panel 520.

This configuration will be described in detail with reference to FIG. 5 is a cross-sectional view taken along line L-M of FIG. Referring to FIG. 5, the guide panel 520 according to the first embodiment is seated in a spacing space 550 provided between the first cover bottom 510 and the second cover bottom 515.

At least one support A and at least one groove B may be provided on one side of the guide panel 520 and at least one support A and at least one groove B may be provided. At least one support D and at least one groove C may be provided on the opposite side of the one surface. Each of the supports A and D of the guide panel 520 may support the cover bottom 500 or the guide panel 520 may be supported by the cover bottom 500.

More specifically, the third region 513 of the first cover bottom 510 is disposed on the first support portion A of the guide panel 520, so that the guide panel 520 can cover the first cover bottom 510 Can support. Further, the guide panel 520 is disposed on the second cover bottom 515, so that the second cover bottom 515 can stably support the guide panel 520. Here, the fourth region 516 of the second cover bottom 515 is seated on the second support portion D of the guide panel 520, and the fifth region 517 of the second cover bottom 515 is seated on the guide panel 520. [ (Not shown).

The height h4 of the second support portion D of the guide panel 520 on which the second cover bottom 515 is mounted is set to be equal to the height T of the fourth region 516 of the second cover bottom 515, . When the fourth region 516 of the second cover bottom 515 is seated on the second support portion D of the guide panel 520 the fourth region 516 of the second cover bottom 515 and the second region A step is not generated at the boundary of the second support portion D of the panel 520. [

Meanwhile, at least one groove (B, C) is provided on the upper surface and the lower surface of the guide panel 520 according to the present embodiment. The guide panel 520 has at least one groove (B, C) on the upper surface and the lower surface, so that contraction of the injection-molded guide panel 520 can be suppressed.

A detailed description will be given with reference to Fig. 6 is a sectional view of the guide panel according to the first embodiment.

Referring to FIG. 6, the guide panel 520 according to the first embodiment is provided with a first support portion A and a first groove B on one surface thereof, and the first support portion A and the first groove B A second groove C and a second support D are provided on the opposite surface. Here, the first groove B and the second groove C may be grooves surrounded by the first surfaces 523 and 526, the second surfaces 524 and 527, and the third surfaces 525 and 528, respectively.

Here, the first surfaces 523 and 526 of the first groove B and the second groove C may extend in the horizontal direction. The second surface 524 and the third surface 525 of the first groove B are respectively connected to the ends of the first surface 523 of the first groove B and the second surface 524 of the second groove C The second surface 527 and the third surface 528 may be connected to the end of the first surface 526 of the second groove C. The second surfaces 524 and 527 and the third surfaces 525 and 528 of at least one of the first groove B and the second groove C are arranged so as to have a predetermined slope with respect to the horizontal direction .

 The second surfaces 524 and 527 and the third surfaces 525 and 528 of at least one of the first groove B and the second groove C are arranged to have a predetermined slope with respect to the horizontal direction, It is easy to form the first groove B and the second groove C through injection.

Meanwhile, the guide panel 520 formed through the injection process is deformed due to contraction. This is related to the cross-sectional area of the guide panel 520, and by reducing the cross-sectional area of the guide panel 520 , It is possible to suppress the occurrence of warpage caused by the shrinkage of the guide panel 520.

The guide panel 520 according to the first embodiment includes at least one groove as described above on at least two sides of the guide panel 520 so that the cross sectional area of the guide panel 520 can be reduced, Contraction of the panel 520 can be prevented. In addition, by providing at least one groove on at least two sides of the guide panel 520, the amount of resin used to form the guide panel 520 can be reduced. Therefore, the manufacturing cost of the guide panel 520 can be reduced.

The second surfaces 524 and 527 and the third surfaces 525 and 528 of at least one groove of the first groove B and the second groove C of the guide panel 520 are arranged with respect to the horizontal direction The cross-sectional area of one side of each groove can be formed wider than the cross-sectional area of the opposite side by arranging to have a predetermined inclination.

As compared with the case where the second surfaces 524 and 527 and the third surfaces 525 and 528 of the first groove B and the second groove C are vertically arranged with respect to the horizontal direction, The amount of the resin used to form the resin layer 520 is reduced. Therefore, the sectional area of the guide panel 520 can be further reduced, and the amount of resin used to form the guide panel 520 can be further reduced.

The first support portion A provided on the same surface as the first groove B of the guide panel 520 is connected to the first surface 522 and the first surface 522 extending in the horizontal direction, And a second surface 521 disposed vertically with respect to the direction of the first surface 521. Although not shown in the drawing, a cover bottom, a reflection plate, a light guide plate, a plurality of optical sheets, and a display panel may be disposed on the first support portion A.

The height h1 of the first support portion A is equal to the height of the second surface 521 of the first support portion A. [ At this time, the height h2 of the first groove B provided on the same surface as the first support portion A may be higher than the height h1 of the first support portion A. [ That is, since the height h2 of the first groove B is high, the amount of resin used to form the guide panel 520 can be reduced.

The second support portion D provided on the same surface as the second groove C of the guide panel 520 is connected to the first surface 530 and the first surface 530 extending in the horizontal direction, And a second surface 529 disposed vertically with respect to the direction of the second surface 529. Although not shown in the drawing, a second cover bottom may be disposed on the second support portion D.

Here, the height h4 of the second support portion D is equal to the height of the second surface 529 of the second support portion D. At this time, the height h3 of the second groove C provided on the same plane as the second support portion D may be higher than the height h4 of the second support portion D. That is, since the height h3 of the second groove C is formed to be high, the amount of resin used to form the guide panel 520 can be reduced.

The amount of resin used in manufacturing the guide panel 520 is reduced by providing at least one groove B and C on the upper and lower surfaces of the guide panel 520. As a result, It is possible to suppress the occurrence of shrinkage deformation after the injection process and injection. In addition, since the amount of resin used is reduced, the manufacturing cost can be reduced.

The cross-sectional shape of the guide panel 520 is not limited to that shown in FIG. 6, and may have a structure as shown in FIG. 7 and FIG. 7 is a sectional view of the guide panel according to the second embodiment. 8 is a sectional view of the guide panel according to the third embodiment. The guide panel according to the second and third embodiments may include the same components as those of the above-described embodiment. The description overlapping with the embodiment described above can be omitted. The same components have the same reference numerals.

7, in the guide panel 720 according to the second embodiment, the first surface 623 of the first groove E provided on the same surface as the first support A extends in the horizontal direction . The second surface 624 and the third surface 625 of the first groove E are respectively connected to the ends of the first surface 623 and may be arranged vertically with respect to the horizontal direction.

The second surface 527 and the third surface 528 of the second groove C provided on the same surface as the second support portion D may be arranged with a predetermined slope with respect to the horizontal direction .

8, the first surface 626 of the second groove F provided on the same surface as the second support portion D in the guide panel 820 according to the third embodiment is extended in the horizontal direction . The second surface 627 and the third surface 628 of the second groove F are respectively connected to the ends of the first plurality 626 and can be arranged vertically with respect to the horizontal direction.

In addition, the second surface 524 and the third surface 525 of the first groove B provided on the same surface as the first support portion A can be arranged with a predetermined slope with respect to the horizontal direction .

That is, it is sufficient that the guide panel according to the present invention has a configuration in which the second surface of at least one groove among the grooves provided in the guide panel and the third surface facing the second surface are arranged with a predetermined slope.

Next, the back surface structure of the cover bottom with the guide panel fastened according to the present embodiment will be described as follows. 9 is a plan view showing the back surface of the cover bottom to which the guide panel according to the present embodiment is fastened. The guide panel and the cover bottom according to FIG. 9 may include the same components as those in the embodiment described above. The description overlapping with the embodiment described above can be omitted. The same components have the same reference numerals.

Referring to FIG. 9, a guide panel 520 having a plurality of grooves is disposed in a spacing space 550 provided between a first cover bottom 510 and a second cover bottom 515. The plurality of grooves shown in Fig. 9 may have the same configuration as the second grooves C of Fig. In addition, a guide panel 520 may be provided in the insertion hole 540 provided in the first cover bottom 510.

9, a plurality of grooves are provided in the guide panel 520. However, it is sufficient that the guide panel 520 includes at least one groove on the back surface thereof. Since at least one groove is provided on the back surface of the guide panel 520, deformation of the guide panel 520 during injection molding can be suppressed.

Next, the structure of the guide panel and the cover bottom according to the comparative example and the example will be compared as follows. 10 is a view comparing the cross-sectional structures of the guide panel and the cover bottom according to the comparative example and the embodiment.

Referring to FIG. 10, the cover bottom 900 according to the comparative example has a bent shape at the side. On the other hand, the cover bottom 500 according to the present embodiment is composed of first and second cover bottoms 510 and 515, and at least one side of the cover bottom 500 includes a first cover bottom 510, A spacing space between the bottoms 515 is provided.

Accordingly, the cover bottom 900 according to the comparative example has a smaller moment of inertia and section modulus than the cover bottom 500 according to the present embodiment (the cover bottom according to this embodiment has a h value of more The rigidity of the cover bottom 900 according to the comparative example is lower than the rigidity of the cover bottom 500 according to the present embodiment.

In addition, the guide panel 920 according to the comparative example has a smaller number of grooves and supports than the guide panel 520 according to the present embodiment. Specifically, the guide panel 920 according to the comparative example has grooves H on the same surface on which the supports G are disposed, but the opposite surfaces on which the supports G and grooves H are provided are formed in a flat structure do.

On the other hand, in the guide panel 520 according to the present embodiment, the first groove B is provided on the same surface on which the first support portion A is disposed, and the first support portion A and the first groove B And a second groove (C) and a second support portion (D) are further provided on the opposite surface. Therefore, the guide panel 920 according to the comparative example has a larger amount of resin used for manufacturing the guide panel 920 than the guide panel 520 according to the present embodiment, 520), the shrinkage rate during injection molding is high.

This effect will be described below with reference to FIG. 11 is a table comparing the effects of the guide panel and the cover bottom according to the comparative example and the example.

11, the sectional area of the guide panel according to the comparative example is 4.275 mm 2, the sectional area of the guide panel according to the embodiment is 2.489 mm 2, the sectional area of the guide panel according to the embodiment is larger than the sectional area of the guide panel according to the comparative example Small. Therefore, it can be seen that the amount of the resin used is smaller than that of the guide panel according to the comparative example when the guide panel according to the embodiment is manufactured. As a result, shrinkage occurs less during injection of the guide panel, and manufacturing cost can be saved.

In addition, the value of the secondary moment of inertia of the cover bottom according to the comparative example is 0.3255 mm < 4 >, and the value of the secondary moment of inertia of the cover bottom according to the embodiment is 0.5743 mm & Sectional moment of inertia according to the example. Therefore, it can be understood that the rigidity of the cover bottom according to the embodiment is greater than the rigidity of the cover bottom according to the comparative example. Accordingly, it is possible to suppress the phenomenon that the cover bottom is bent along the guide panel shrinkage direction due to the shrinkage of the guide panel during cooling of the guide panel or injection of the guide panel.

11, the deformation amount (-0.28 mm) of the cover bottom to which the guide panel according to the embodiment is fastened may be smaller than the deformation amount (-0.45 mm) of the cover bottom fastened with the guide panel according to the comparative example .

That is, it is possible to suppress the occurrence of warpage through the structure in which the guide panel is fastened to the cover bottom according to the present embodiment, and to improve the light leakage phenomenon caused by the warp.

The features, structures, effects and the like described in the foregoing embodiments are included in at least one embodiment of the present invention and are not necessarily limited to one embodiment. Further, the features, structures, effects, and the like illustrated in the embodiments may be combined or modified in other embodiments by those skilled in the art to which the embodiments belong. Therefore, it should be understood that the present invention is not limited to these combinations and modifications.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the present invention. It can be seen that various modifications and applications are possible. For example, each component specifically shown in the embodiments may be modified and implemented. It is to be understood that the present invention may be embodied in many other specific forms without departing from the spirit or essential characteristics thereof.

500: Cover Bottom
510: first cover bottom
515: Second cover bottom
520: Guide panel
540: insertion hole
550: Spacing space

Claims (17)

In a guide panel for fixing a display panel,
A first support for supporting a part of the display panel;
At least one first groove provided on the same plane as the first support portion;
At least one second groove provided on an opposite surface of the first support portion; And
And a second support portion provided on the same plane as the second groove,
Wherein the first groove and the second groove are grooves surrounded by the first surface, the second surface and the third surface, respectively, the first surface of the first groove and the second groove extend in the horizontal direction, And the second and third surfaces have a predetermined inclination with respect to the horizontal direction.
The method according to claim 1,
Wherein the first support portion comprises a first surface extending in a horizontal direction and a second surface connected to one end of the first surface and extending in a direction perpendicular to the horizontal direction, Is the same as the length of the second side of the guide panel.
3. The method of claim 2,
Wherein the height of the first support portion is lower than the height of the first groove.
The method according to claim 1,
The second support portion is composed of a first surface extending in the horizontal direction and a second surface connected to one end of the first surface and extending in a direction perpendicular to the horizontal direction, Is the same as the length of the second side of the guide panel.
5. The method of claim 4,
And the height of the second support portion is lower than the height of the second groove.
As a rectangular cover bottom,
A first cover bottom including a first region and a second region extending in a horizontal direction and including a third region connected to one end of each of the first region and the second region and extending in a vertical direction; And
And a second cover bottom having a fourth region extending in the horizontal direction and a fifth region connected to one end of the fourth region and extending in the vertical direction,
Wherein at least one side of the cover bottom has the first cover bottom and the second cover bottom spaced apart from each other.
The method according to claim 6,
Wherein the first cover bottom includes an extended region extending in a vertical direction from the first region and the extended region is connected to a second cover bottom.
The method according to claim 6,
The cover bottom having a shape in which the second area and the third area of the first cover bottom are connected to each other and the shape in which the fourth area and the fifth area of the second cover bottom are connected to each other is in the 'a' or 'b' shape.
Display panel;
An optical sheet, a light guide plate, and a reflection plate disposed on the back surface of the display panel;
A light source assembly disposed on at least one side of the light guide plate;
A guide panel for supporting the display panel; And
And a cover bottom coupled to the guide panel and composed of first and second cover bottoms,
The guide panel includes a first support portion for supporting a part of the display panel, at least one first groove provided on the same surface as the first support portion, a second support portion provided on the opposite surface provided with the first support portion, Second grooves,
Wherein the first groove and the second groove are grooves surrounded by a first surface, a second surface and a third surface, respectively, wherein a first surface of at least one of the first groove and the second groove extends in the horizontal direction, And the third surface has a predetermined slope with respect to the horizontal direction.
10. The method of claim 9,
Wherein at least one side of the cover bottom has a spacing space between the first cover bottom and the second cover bottom.
10. The method of claim 9,
Wherein the cover bottom comprises a spacing space between the first and second cover bottoms in a region corresponding to an area where the light source assembly is disposed.
10. The method of claim 9,
And a guide panel is fastened to the spacing space between the first cover bottom and the second cover bottom.
10. The method of claim 9,
Wherein a portion of the first cover bottom is disposed on the first support portion of the guide panel and a portion of the second cover bottom is disposed below the second support portion of the guide panel.
10. The method of claim 9,
Wherein at least one insertion hole is further provided in at least a part of one side of the first cover bottom.
15. The method of claim 14,
And a guide panel having at least one groove in an area corresponding to the insertion hole is provided in a part of the insertion hole.
16. The method of claim 15,
And a protrusion extending from at least one side of the reflection plate is seated in the groove.
10. The method of claim 9,
Wherein the light source assembly is attached to at least one side of the cover bottom with a thermally conductive tape.

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