KR20170068289A - BOTTOM COVER AND flat DISPLAY DEVICE COMPRISING THE SAME - Google Patents

Abstract

The present invention provides a bottom cover capable of preventing a shape distortion due to a defective light source and an external force. The bottom cover includes first and second side portions contacting and facing each other at first and second edges of the bottom portion, And a plurality of supports extending from both sides of each of the first and second side portions and overlapping with a portion of the third and fourth side portions. Since the gaps between the first to fourth side portions can be removed by such a plurality of support portions, defective light gaps and foreign matter can be prevented from flowing through the gaps between the first to fourth side portions.

Description

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

The present invention relates to a bottom cover for a flat panel display and a flat panel display including the same.

As the era of informationization becomes full-scale, the display field for visually displaying electrical information signals is rapidly developing. Accordingly, studies have been continuing to develop performance such as thinning, lightening, and low power consumption for various flat display devices.

Typical examples of such flat panel display devices include a liquid crystal display device (LCD), a plasma display panel (PDP), a field emission display (FED) An electroluminescence display device (ELD), an electro-wetting display device (EWD), and an organic light emitting display device (OLED).

Such flat panel display devices include a flat display panel for realizing an image and a bottom cover for accommodating the display panel. The display panel includes a pair of substrates mutually adhered with a unique luminescent material or a polarizing material interposed therebetween.

Illustratively, a liquid crystal display device includes a liquid crystal panel that displays an image using optical anisotropy and polarization properties of the liquid crystal. The liquid crystal panel includes a pair of substrates and a liquid crystal layer injected therebetween, and adjusts the light transmittance of each pixel region by adjusting the alignment direction of the liquid crystal. That is, the liquid crystal panel does not generate light by itself, but controls the amount of light emitted from the outside in each pixel region to display an image. Therefore, the liquid crystal display further includes a backlight unit for irradiating the liquid crystal panel with light. The liquid crystal display further includes a bottom cover which is disposed under the backlight unit and accommodates the liquid crystal panel and the backlight unit.

In the case of a flat panel display device provided with a display interface such as a building or a car, such as navigation and clusters, in order to minimize and slim the bezel area, a bottom cover having a structure consisting of only a bottom part and a side part . ≪ / RTI >

FIG. 1 is a plan view showing cuts corresponding to a general bottom cover, and FIG. 2 is a perspective view showing a bottom cover formed by bending the cut material of FIG.

1, a general bottom cover 10 includes a bottom plate 11 having a square shape and a base plate 12 made of a metal material and four side portions 12, 13, 14, 14 extending to the respective corners of the bottom portion 11, 15). ≪ / RTI >

2, a display panel (not shown) or a backlight unit is formed by bending each corner of the bottom portion 11 so that the four side portions 12, 13, 14 and 15 face one side A bottom cover 10 of a form that can be stored is manufactured.

However, when the four side portions 12, 13, 14, 15 of the general bottom cover 10 come into contact with or collide with each other, problems such as foreign matter generation and shape deformation due to friction may occur. In order to prevent this, a predetermined gap 16 is arranged between the four side portions 12, 13, 14, 15.

External gaps are introduced into the bottom cover 10 through the gaps 16 between the four side portions 12, 13, 14 and 15, and defects in the light leakage due to leakage of light from the display panel or the backlight unit occur There is a problem. Since the side portions 12, 13, 14 and 15 are not mutually supported, there is a problem that the bottom cover 10 is easily deformed by an external force.

Therefore, there is a problem in improving the quality and life of the flat panel display device.

The present invention provides a bottom cover and a flat panel display device including the bottom cover, which can prevent the shape distortion caused by a light leakage and an external force.

In order to solve the above problems, the present invention provides a method of manufacturing a semiconductor device, which includes a rectangular bottom portion including first to fourth edges, first and second side portions abutting the first and second edges of the bottom portion, A bottom cover extending from both sides of each of the first and second side portions and including a plurality of supports overlapping with a portion of the third and fourth side portions, A flat panel display device is provided. Here, the respective supporting portions are in contact with the inside of the third and fourth side portions.

The bottom cover according to each embodiment of the present invention includes first to fourth side portions which are in contact with respective corners of the bottom portion, and a plurality of supports disposed between the first to fourth side portions. The plurality of supports extend from both sides of the first and second side portions facing each other, and overlap the third and fourth side portions facing each other.

Since the gaps between the first to fourth side portions can be removed by such a plurality of support portions, defective light gaps and foreign matter can be prevented from flowing through the gaps between the first to fourth side portions.

Since the plurality of supporting portions and the third and fourth side portions overlap each other and are mutually supported, the rigidity can be improved in the boundary region between the first to fourth side portions, thereby preventing deformation of the bottom cover due to external force .

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a plan view showing a cut material corresponding to a general bottom cover. Fig.
FIG. 2 is a perspective view showing a bottom cover formed by bending the cut material of FIG. 1. FIG.
3 is a cross-sectional view illustrating a flat panel display device according to an embodiment of the present invention.
4 is a cross-sectional view illustrating a flat panel display device according to another embodiment of the present invention.
5 is a perspective view illustrating the bottom cover of FIGS. 3 and 4 according to the first embodiment of the present invention.
Fig. 6 is a plan view showing a cutter corresponding to the bottom cover of Fig. 5; Fig.
7 is a perspective view of the bottom cover of Figs. 3 and 4 according to the second embodiment of the present application.
FIG. 8 is a plan view showing a cutter corresponding to the bottom cover of FIG. 7; FIG.
FIG. 9 is a plan view showing another example of the cut material of the bottom cover according to the second embodiment of the present application.

Hereinafter, a flat panel display according to each embodiment of the present invention will be described in detail with reference to the accompanying drawings.

First, the flat panel display according to each embodiment of the present invention will be described with reference to FIGS. 3 and 4. FIG.

FIG. 3 is a cross-sectional view illustrating a flat panel display device according to an embodiment of the present invention, and FIG. 4 is a cross-sectional view illustrating a flat panel display device according to another embodiment of the present invention.

3, the flat panel display device D1 according to an embodiment of the present invention includes a bottom cover 100, a flat display panel 210 housed in the bottom cover 100, And a cover glass 230 disposed on the polarizer 220 and fastened to the bottom cover 100. [ The flat panel display D1 may further include an adhesive member 240 for fixing the display panel 210 in the bottom cover 100. [

Although not shown in detail in FIG. 3, the display panel 210 may have a structure in which a light emitting material is sandwiched between a pair of substrates. Illustratively, the display panel 210 may include a plurality of organic light emitting elements disposed between a pair of substrates.

The polarizing plate 220 is for preventing the contrast ratio from being lowered by external light reflected on the display surface. 3, when the external light is used as the light source, or when the external light is installed in a relatively small environment, the polarizer 220 may be omitted.

4, the flat panel display D2 according to another embodiment of the present invention includes a bottom cover 100, a backlight unit 320 housed in the bottom cover 100, and a backlight unit 320, And a liquid crystal panel 310 disposed thereon.

The liquid crystal panel 310 includes a pair of substrates 311 and 312 facing each other, a liquid crystal layer 313 disposed between the pair of substrates 311 and 312, and a pair of substrates 311 and 312 A lower polarizing plate 315 disposed below the lower substrate 311 of the pair of substrates 311 and 312 and a lower substrate 312 disposed on the upper substrate 312 among the pair of substrates 311 and 312, And an upper polarizer 316 having a transmission axis perpendicular to the transmission axis of the polarizer 315.

Although not shown in detail in FIG. 4, when the liquid crystal panel 310 is driven in an active matrix manner, the lower substrate 311 of the pair of substrates defines a plurality of pixel regions, and a thin film transistor array .

The thin film transistor array includes a gate line and a data line crossing each other to define a plurality of pixel regions in a display region, a thin film transistor corresponding to each pixel region and arranged in a crossing region between the gate line and the data line, And a pixel electrode connected to each thin film transistor.

The liquid crystal panel 310 further includes a common electrode disposed on one of the pair of substrates 311 and 312 to generate a predetermined electric field together with the pixel electrode. At this time, the arrangement direction of the liquid crystals of the liquid crystal layer 313 is changed by the electric field generated between the pixel electrode and the common electrode, so that the light transmittance of each pixel region is adjusted.

4, when the liquid crystal panel 310 displays a color image, the liquid crystal panel 310 further includes a color filter disposed on one of the pair of substrates 311 and 312 .

The backlight unit 320 is disposed under the liquid crystal panel 310 and emits light toward the liquid crystal panel 310 side.

The backlight unit 320 includes a light guide plate 321 facing the liquid crystal panel 310, a light source 322 facing the side surface of the light guide plate 321, and a light source 322. The backlight unit 320 supplies a driving current to the light source 322 A reflective sheet 324 disposed under the light guide plate 321, a plurality of optical sheets 325 disposed on the light guide plate 321, and a light guide plate 321 and a printed circuit board 323 And a panel guide 326 for receiving and supporting the liquid crystal panel 310.

Here, each of the reflective sheet 324 and the panel guide 326 can be fixed in a state accommodated in the bottom cover 100 by the adhesive member 330.

The flat panel display D2 may further include a light shielding tape 340 disposed in a bezel area between the liquid crystal panel 310 and the backlight unit 320 and preventing light leakage in the bezel area.

However, the flat panel display devices D1 and D2 shown in FIGS. 3 and 4 are merely examples of the display device including the bottom cover 100, and any display device of any structure may be used as the bottom cover 100 according to each embodiment of the present invention. (100).

Next, a bottom cover for a flat panel display according to each embodiment of the present invention will be described with reference to Figs. 5 to 9. Fig.

FIG. 5 is a perspective view of the bottom cover of FIGS. 3 and 4 according to the first embodiment of the present invention, and FIG. 6 is a plan view of a cutter corresponding to the bottom cover of FIG. FIG. 7 is a perspective view showing the bottom cover of FIGS. 3 and 4 according to the second embodiment of the present invention, FIG. 8 is a plan view showing a cutout corresponding to the bottom cover of FIG. 7, Fig. 7 is a plan view showing another example of the cut material of the bottom cover according to the example. Fig.

5, the bottom cover 100 according to the first embodiment of the present invention includes a rectangular bottom portion 110, first to fourth side portions 121, 122, 123 and 124, And a plurality of support portions 131 extending from both sides of each of the first and second side portions 121 and 122 and overlapping with a portion of the third and fourth side portions 123 and 124.

The rectangular bottom portion 110 has first and second opposing edges (which are edges in the long side direction of the bottom portion 110 in FIG. 5) and a pair of opposing facing first and second edges 3 and a fourth edge (edge in the short side direction of the bottom portion 110 in FIG. 5).

The first and second side portions 121 and 122 are in contact with the first and second edges (edges in the long side direction) of the bottom portion 110 and face each other.

The third and fourth side portions 123 and 124 are in contact with the first and second edges (long side edge edges) of the bottom portion 110 and face each other.

The plurality of support portions 131 extend from both sides of the first and second side portions 121 and 122 and extend between the first and second side portions 121 and 122 and the third and fourth side portions 123 and 124 And is bent to the side of the third and fourth side portions 123 and 124 along the edge to be in contact with the inside of the third and fourth side portions 123 and 124. [ The overall shape of the bottom cover 100 by the bottom portion 110 and the first to fourth side portions 121, 122, 123, and 124 is not deformed, including the plurality of support portions 131. [

The plurality of support portions 131 overlap a part of each of the third and fourth side surfaces 123 and 124. [

Specifically, the support portion 131 disposed between the first side surface portion 121 and the third side surface portion 123 extends from one side of the first side surface portion 121 and contacts the inside of the third side surface portion 123. The support portion 131 disposed between the first side surface portion 121 and the fourth side surface portion 124 extends from the other side of the first side surface portion 121 and contacts the inside of the fourth side surface portion 124.

Similarly, the support portion 131 disposed between the second side surface portion 122 and the third side surface portion 123 extends from one side of the second side surface portion 122 and contacts the inside of the third side surface portion 123. The support portion 131 disposed between the second side surface portion 122 and the fourth side surface portion 124 extends from the other side of the second side surface portion 122 and contacts the inside of the fourth side surface portion 124.

The bottom cover 100 of FIG. 5 is manufactured by bending the cut material as shown in FIG. The first and second side portions 121 and 122 are formed by bending the edges of the cut 100 in the long side direction of the bottom portion 110 and then bent at both ends of the first and second side portions 121 and 122 A plurality of support portions 131 are formed by bending a portion protruding out of the bottom portion 110 so as to be parallel to the edges of the bottom portion 110 in the short side direction.

Next, third and fourth side surfaces 123 and 124 are formed to bend the edges in the short side direction of the bottom portion 110 to be in contact with the plurality of support portions 131. At this time, the angle between each of the third and fourth side parts 123 and 124 and the bottom part 110 may be 88.5 ° to 90.5 °.

If the angle between each of the third and fourth side portions 123 and 124 and the bottom portion 110 is less than 88.5 degrees, the third and fourth side portions 123 and 124 are laid down on the bottom portion 110 side The support portions 131 are also biased toward the bottom portion 110 by the third and fourth side portions 123 and 124 so that the storage space of the bottom cover 100 can be reduced. When the angle between each of the third and fourth side surfaces 123 and 124 and the bottom portion 110 is greater than 90.5 degrees, the third and fourth side surfaces 123 and 124 and the respective supporting portions 131 are mutually supported And a gap may be formed between the third and fourth side parts 123 and 124 and each support part 131. [

6, the width W of each support portion 131 may be smaller than or equal to the height of the third and fourth side portions 123 and 124. In addition,

In particular, the width W of each supporting portion 131 may be 5 mm to 10 mm.

If the width W of each supporting part 131 is less than 5 mm, there is a problem that the metal fabric cutting process can not be easily performed. If the width W of each supporting portion 131 is larger than 10 mm, there is a problem that deformation of the supporting portion 131 due to external force becomes easy.

Each of the plurality of support portions 131 is separated from the bottom portion 110 by a predetermined distance so as not to hit the bottom portion 110 during and after the bending process.

6, there is a gap G between the supporting portions 131 and the third and fourth side portions 123, 124 at the time of manufacturing the cutter corresponding to the bottom cover 100. In other words, A gap is disposed. At this time, the predetermined gap G may be 0.1 mm to 0.2 mm.

As the gaps are provided between the supporting portions 131 and the third and fourth side portions 123 and 124, the supporting portions 131 face the bottom portion 110 and are separated from the bottom portion 110 by a predetermined distance 0.0 > (G). ≪ / RTI > As a result, friction between the supporting portions 131 and the bottom portion 110 and foreign substances due to the friction can be prevented.

According to the first embodiment, the edge of each supporting portion 131, which faces the bottom portion 110, is parallel to the bottom portion 110. Alternatively, the edge of each support 131 facing the bottom 110 may be angled relative to the bottom 110.

7 and 8, in the bottom cover 100 'according to the second embodiment of the present invention, each supporting portion 131 faces the bottom portion 110, and the bottom cover 110' Except that it includes the corners of the photograph shape, the duplicated description will be omitted in the following.

As shown in Figure 7, according to the second embodiment, each of the supports 132 faces the bottom portion 110 so as not to hit the bottom portion 110 during and after the bending process, 0.0 > 110 < / RTI >

The angled corners of each support portion 132 are spaced apart from the bottom portion 110 away from the first and second side portions 121 and 122. In other words, each supporting portion 132 is in a trapezoidal shape including an edge inclined upward from the vertex of the bottom portion 110.

8 and 9, in the cut 100 'corresponding to the bottom cover, an outer periphery is formed between each support portion 132 and the third and fourth side portions 123 and 124, A gap that widens gradually becomes disposed.

8, the width W of the support portion 132 may be the same as the height of the third and fourth side portions 123 and 124. As shown in FIG. 9, the width W of the support portion 132 'may be smaller than the height of the third and fourth side portions 123 and 124. In addition, Illustratively, the width W of the support 132 may be between 5 mm and 10 mm.

The trapezoidal shape of each support portion 132 is advantageous in that the cutting process is easier than in the case where the support portions 131 are rectangular, and even if the bottom cover 100 'is slightly twisted due to external force, 132 and the bottom portion 110 can be further prevented.

As described above, the bottom covers 100 and 100 'according to the embodiments of the present invention include a plurality of support portions 131 and 132 disposed between the first to fourth side portions 121, 122, 123 and 124 . The plurality of support portions 131 and 132 extend from both sides of the first and second side portions 121 and 122 and extend to the third and fourth side portions 123 and 124 while overlapping the third and fourth side portions 123 and 124, 124).

The plurality of supporting portions 131 and 132 and the third and fourth side portions 123 and 124 are mutually supported so that the rigidity in the boundary region between the first to fourth side portions 121, Therefore, deformation of the bottom cover 100, 100 'due to external force can be prevented.

Since the gaps between the first to fourth side portions 121, 122, 123, and 124 are removed by the plurality of supports 131 and 132, defective light gaps and foreign matter can be prevented from being introduced.

5 to 9, the plurality of supports 131, 132 and 132 'are formed on both sides of the first and second side portions 121 and 122 corresponding to the longitudinal axial edges of the bottom portion 110, It is an extended form. Alternatively, the plurality of supports 131, 132, 132 'may extend from both sides of the third and fourth side portions 123, 124 corresponding to the minor axis direction of the bottom portion 110, (121, 122).

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Will be clear to those who have knowledge of.

D1, D2: Flat panel display device 100, 100 ': Bottom cover
210: display panel 310: liquid crystal panel
320: backlight unit 110: bottom part
121, 122, 123, 124: first to fourth side surfaces
131, 132, 132 ': Support

Claims (10)

A rectangular shaped bottom including first to fourth edges;
First and second side portions abutting and facing the first and second edges of the bottom portion;
Third and fourth side surfaces abutting and facing the third and fourth edges of the bottom portion; And
And a plurality of supports extending from both sides of each of the first and second side portions and overlapping with a portion of the third and fourth side portions. The method according to claim 1,
And each of the supporting portions is in contact with the inside of the third and fourth side portions. The method according to claim 1,
Wherein each of the support portions is spaced apart from the bottom portion at a predetermined interval. The method of claim 3,
Wherein a distance between each of the supporting portions and the bottom portion is 0.1 mm to 0.2 mm. The method according to claim 1,
Wherein each of the supports includes an edge that faces the bottom and is tapered relative to the bottom. 6. The method of claim 5,
Wherein the inclined edge of each support portion is spaced apart from the bottom as it is away from the first and second side portions. The method according to claim 1,
And the width of each of the support portions is 5 mm to 10 mm. The method according to claim 1,
And an angle between each of said third and fourth side portions and said bottom portion is 88.5 DEG to 90.5 DEG. A bottom cover according to any one of claims 1 to 8; And
And a display panel accommodated in the bottom cover. A bottom cover according to any one of claims 1 to 8;
A backlight unit housed in the bottom cover; And
And a display panel disposed on the backlight unit and having a structure including a liquid crystal layer.

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