KR20070000780A - Display device - Google Patents

Abstract

A display device is provided to prevent the damage of a display panel due to contacting between the display panel and a coupling member for fixing the display panel, by forming a stopper between the display panel and the coupling member. A display panel(150) is disposed within a lower container(110), wherein the display panel is configured to display an image. An upper container(180) is coupled with the lower container while the edge of the display panel is pressed. A coupling member penetrates an upper sidewall of the upper container, and fixes the upper container. A stopper(170) is disposed between the display panel and the coupling member to prevent the coupling member from being contacted with the display panel.

Description

Display device {DISPLAY DEVICE}

1 is a perspective view of a display device according to an exemplary embodiment of the present invention.

FIG. 2 is an exploded perspective view of the display device illustrated in FIG. 1.

3 is a cross-sectional view of the display device illustrated in FIG. 2 taken along the line II ′.

4 is a partial perspective view of a display device according to another exemplary embodiment of the present invention.

FIG. 5 is a cross-sectional view of the display device illustrated in FIG. 4 taken along the line II-II ′.

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

100: display device 110: row storage container

111 bottom plate 113 low sidewall

114: step portion 115: receiving groove

120: optical unit 150: display panel

170: stuffer 171: first side

173: second page 175: third page

180: upper storage container 181: top plate

185: upper sidewall 187: first fastening hole

190: bracket 191: second fastening hole

199: screw

The present invention relates to a display device, and more particularly, to a display device capable of easily reducing thickness.

In general, the liquid crystal has both electrical and optical characteristics that change the transmittance of light according to the intensity of the electric field. A liquid crystal display device (LCD) displays an image using the electro-optical characteristics of the liquid crystal (LC).

Since the liquid crystal is a passive element that does not generate light by itself, the liquid crystal display includes a backlight assembly to display an image in a dark place.

The backlight assembly employed in the conventional display device is classified into a direct downward type back light assembly and an edge type back light assembly according to the arrangement of the light sources.

In the direct type backlight assembly, a plurality of light sources are disposed under the display panel. In the edge type backlight assembly, a light source is disposed on a side of the light guide plate to provide light to the display panel.

The edge type backlight assembly has been widely used as a backlight assembly of the display device because it is suitable for reducing the thickness of the display device. Recently, in order to reduce the size and thickness of the display device, the thickness of the bottom and sidewalls of the storage container accommodating the light guide plate and the display panel is gradually reduced, and the top chassis is coupled to the storage container to prevent the light guide plate and the display panel from being separated. The thickness of is also decreasing.

On the other hand, in a laptop, a television, etc., the display device is usually housed in an outer case and used, and in order to fix the display device to the outer case or wall, a bracket fixed to the outer case is disposed on the side wall of the top chassis and a screw is mounted. Fasten the side wall of the bracket and the top chassis through.

In this case, the screw protrudes into the sidewall of the top chassis, and the end of the screw often comes into contact with the display panel housed in the storage container due to a manufacturing process tolerance.

As a result, there is a problem in reducing the thickness and size of the storage container and the top chassis, and there is a problem that an unexpected damage occurs frequently in the display panel.

Accordingly, an object of the present invention is to solve such a conventional problem, and an object of the present invention is to provide a display device including a stuffer for blocking the fastening member from contacting the display panel.

In order to achieve the above object of the present invention, a display device according to an exemplary embodiment includes a row storage container, a display panel, an upper storage container, and a stopper. The display panel is disposed in the row storage container to display an image. The upper storage container is coupled to the row storage container while pressing an edge of the display panel. When the fastening member penetrates the upper sidewall of the upper container to fix the upper container to a predetermined position, the stuffer is fastened with the display panel to prevent the fastening member from contacting the display panel. It is arranged between the members.

Preferably, the row storage container includes a bottom plate and a row side wall disposed at the periphery of the bottom plate. In order to provide an accommodation space of the fastening member on the row side wall, an accommodation groove is formed at a predetermined depth from an outer surface and an upper surface of the row side wall, and the stuffer is disposed along the accommodation groove and overlays the fastening member. Covers a portion of the display panel that is overlaid.

Preferably, the stuffer comprises a first side to a third side. The first surface covers a portion of the display panel overlaid on the receiving groove, and the second surface is disposed at the base of the receiving groove, facing the first surface. The third surface connects the first surface and the second surface along the side of the receiving groove.

Optionally, the display device further comprises a bracket. A first fastening hole corresponding to the receiving groove is formed in the upper sidewall, and a second fastening hole corresponding to the first fastening hole is formed in the bracket. As the fastening member is coupled to the first fastening hole through the second fastening hole, the bracket fixes the upper receiving container to a predetermined position. Preferably, the fastening member is a screw, and a screw thread is formed on the inner surface of any one of the first fastening hole and the second fastening hole.

In order to achieve the above object of the present invention, a display device according to another embodiment includes a row storage container, a display panel, an upper storage container, and a stopper.

The row receiving container includes a bottom plate and a row side wall. The row side wall is formed with a receiving groove for providing a receiving groove and the receiving space of the fastening member. A portion of the stuffer is inserted into the fixing groove, and the other portion extends between the fastening member disposed in the receiving groove and the display panel overlaid on the fastening member.

Preferably, the receiving groove is formed to a predetermined depth from the outer surface and the upper surface of the row side wall. The fixing groove is spaced a predetermined distance from the receiving groove to the inside of the row storage container, is formed to a predetermined depth from the upper surface of the row side wall. The rest of the stuffer extends along an upper surface of the row sidewall, and an end portion thereof is bent to cover the side surface of the display panel.

Optionally, the display device further comprises an optical unit. The optical unit is disposed on the bottom plate to provide light to the display panel as the basis for displaying the image.

According to the display device, when the display device is fixed to a predetermined position by using the fastening member, interference between the display panel and the fastening member can be prevented, thereby improving the reliability of the display device.

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

Display device

1 is a perspective view of a display device according to an exemplary embodiment of the present invention. FIG. 2 is an exploded perspective view of the display device illustrated in FIG. 1.

1 and 2, the display device 100 includes a row storage container 110, a display panel 150, a stuffer 170, and an upper storage container 180.

The row storage container 110 includes a bottom plate 111 and a row side wall 113.

The bottom plate 111 has a substantially rectangular shape, and an opening is formed in the center of the bottom 111 plate to reduce the weight and volume of the row storage container 110. The row sidewalls 113 are disposed at the periphery of the bottom plate 111. Accordingly, the row sidewall 113 forming an edge of an approximately square shape is formed on the bottom plate 111. A stepped portion 114 on which the display panel 150 to be described later is disposed is formed at a portion of the row sidewall 113 that contacts the inner side of the row storage container 110.

A receiving groove 115 is formed at one short side of the row sidewall 113 in a square shape to provide an accommodation space of the fastening member. A plurality of receiving grooves 115 may be formed, and in FIG. 2, two receiving grooves 115 are spaced apart from each other by a predetermined interval. The receiving groove 115 is formed to a predetermined depth from the outer surface and the upper surface of the row side wall 113, and opens a portion of the step portion 114. Accordingly, the receiving groove 115 has a base portion parallel to the bottom plate 111 and a side portion parallel to the row sidewall 113.

In another embodiment, the accommodating groove 115 may be formed at another portion of the row sidewall 113, for example, one short side of the row sidewall 113 having the accommodating groove 115 shown in FIG. 2. It may be formed on the other short side or long side of the opposite side wall 113, the number of the receiving groove 115 may be changed.

In FIG. 2, the display device 100 further includes an optical unit 120.

The optical unit 150 provides light to the display panel 150, which will be described later. The optical unit 150 includes a light source 121, a light guide plate 123, a reflective sheet 125, and an optical sheet 127.

The light source 121 is disposed on the long side of the row sidewall 113. The light source 121 includes a lamp and a lamp reflector. The lamp reflector surrounds the lamp and reflects the light emitted from the lamp toward the light guide plate 123 which will be described later.

In FIG. 2, a light source accommodating opening is formed in the long side bottom plate 111 of the row sidewall 113 along the row sidewall 113. The lamp reflector is inserted into the storage space of the row storage container 110 through the light source accommodation opening from the rear surface of the bottom plate 111.

The light guide plate 123 is disposed to face the bottom plate 111 and guides the light provided from the light source 121 to be emitted upward. In FIG. 2, the light guide plate 123 has a plate shape. In another embodiment, the light guide plate 123 may have a wedge shape in which the thickness decreases as the light guide plate 123 moves away from the light incident surface of the light guide plate 123 facing the light source 121.

The light guide plate 123 is preferably made of a material excellent in light transmittance, heat resistance, chemical resistance and mechanical strength. The light guide plate 123 is made of, for example, polymethyl methacrylate (PMMA).

The reflective sheet 125 is disposed between the reflective surface and the bottom plate 111, and the reflective sheet 125 reflects light leaked from the light guide plate 123 to the bottom plate 111, and then again. The light guide plate 123 is incident. The reflective sheet 125 is a flexible sheet and preferably includes a metal layer having excellent reflection efficiency.

The optical sheet 127 is disposed on the light guide plate 123, and improves the optical characteristics of the light emitted from the light guide plate 123 to emit the light. The optical unit 120 further includes a diffusion sheet and light collecting sheets. The diffusion sheet is disposed on the light guide plate 123, and diffuses light emitted from the light guide plate 123 to emit light having a more uniform luminance distribution.

The light collecting sheets are disposed on the diffusion sheet. The light collecting sheets collect light emitted from the diffusion sheet in different directions, preferably in a direction orthogonal to each other, thereby improving brightness of the front surface of the light collecting sheets.

3 is a cross-sectional view of the display device illustrated in FIG. 2 taken along the line II ′.

The display panel 150 is disposed on the row sidewall 113 to be spaced apart from the optical sheet 127 by a predetermined distance to display an image based on the light provided from the optical sheet 127.

The display panel 150 includes a first substrate 151, a second substrate 155, and a liquid crystal layer (not shown).

The first substrate 151 is disposed on the stepped portion 114 formed on the row sidewall 113. Since the receiving groove 115 opens a portion of the stepped portion 114, the first substrate 151 is partially overlaid on the receiving groove 115 formed in the row sidewall 113. .

The first substrate 151 may include pixel electrodes arranged in a matrix, thin film transistors (TFTs) for applying a driving voltage to each pixel electrode, and signal lines for operating the thin film transistors (TFTs), respectively. lines).

The second substrate 155 has a somewhat smaller area than the first substrate 151 and is disposed to face the first substrate 151. The second substrate 155 includes a common electrode formed on a surface facing the pixel electrodes formed on the first substrate 151 and color filters disposed on the pixel electrode. In another embodiment, the common electrode or color filter may be disposed on the first substrate 151.

The liquid crystal layer (not shown) is interposed between the first substrate 151 and the second substrate 155. The liquid crystal layer changes the transmittance of light incident on the first substrate 151 or the second substrate 155 by an electric field formed between the pixel electrodes and the common electrode, and thus the display panel 150 Display the video.

2, the display device 100 further includes a printed circuit board 157 and a flexible printed circuit board (FPCB) 158. The printed circuit board 157 outputs an image signal applied from the outside to the display panel 150 through the flexible printed circuit board 158 which will be described later. In FIG. 2, the light source 121 is disposed close to the printed circuit board 157. However, in order to minimize the adverse effect of heat generated from the light source 121 on the printed circuit board 157. Preferably, the light source 121 is spaced apart from the printed circuit board 157.

One end of the flexible printed circuit board 158 is electrically connected to one edge of the first substrate 151 and bent to surround the row sidewall 113. Accordingly, the other end of the flexible printed circuit board 158 facing the one end is electrically connected to the printed circuit board 157. As a result, the printed circuit board 157 is disposed on the rear surface of the bottom plate 111 or on the outer side of the row sidewall 113, and the panel driving signal output from the printed circuit board 157 is applied to the display panel ( 150).

The stuffer 170 is disposed along the accommodating groove 115, and when the fastening member 199 is accommodated in the accommodating groove 115, the display overlayed with the fastening member 199. Covers a portion of the panel 150.

The stuffer 170 includes first to third surfaces 171, 173, and 175.

The first surface 171 covers a portion of the first substrate 151 overlaid on the receiving groove 115. An end portion of the first surface 171 is bent at an edge of the first substrate 151 to cover the side surface of the display panel 150. In this case, the first surface 171 may not be in contact with the first substrate 151. The second surface 173 faces the first surface 171 and is disposed at the base of the receiving groove 115. The third surface 175 connects the first surface 171 and the second surface 173 along the side of the receiving groove 115.

As a result, the stuffer 170 has an approximately 'c' shape and is fitted into the receiving groove 115. In another embodiment, the stuffer 170 may be fixed to the base and / or side of the receiving groove 115 forming the receiving groove 115 through an adhesive member. The stuffer 170 is preferably made of a material having excellent elasticity, for example, may be made of a metal or plastic material.

The upper storage container 180 is coupled to the row storage container 110 to prevent the display panel 150 and the optical unit 120 from being separated from the row storage container 110. The upper container 180 includes an upper plate 181 and an upper sidewall 185.

The top plate 181 presses an edge of the display panel 150, and the upper sidewall 185 extends from the top plate 181 to cover the row sidewall 113 from the top plate 181. In this case, the upper storage container 180 bends the flexible printed circuit board 158 connected to the first substrate 151 along the row sidewall 113. First fastening holes 187 are formed in the upper sidewall 185 to correspond to the receiving groove 115. The first fastening holes 187 provide openings through which the fastening member 199 penetrates.

In FIG. 3, the display device 100 further includes a bracket 190. The bracket 190 fixes the upper container 180 to a predetermined position, for example, an external case provided by a user of the display device 100. To this end, the bracket 190 is fixed to the outer case, the second fastening hole 191 is formed corresponding to the first fastening hole 187.

Preferably, the fastening member 199 is a screw 199, and a screw thread is formed on an inner surface of any one of the first fastening hole 187 and the second fastening hole 191. do. In FIG. 3, a screw thread coupled to the screw 199 is formed at an inner surface of the first fastening hole 187.

When the screw 199 is fastened to the first fastening hole 187 through the second fastening hole 191 to fix the display device 100 to the outer case, the screw 199 is fixed. An end of the protrusion protrudes inward of the upper sidewall 185 and is accommodated in the receiving groove 115. In this case, the display panel 150 is overlaid with the end of the screw 199, and the screw 199 may contact the display panel 150 due to manufacturing tolerances. Here, the stuffer 170 (stopper) is interposed between the end of the screw 199 and the display panel 150. Accordingly, the stuffer 170 prevents the end of the screw 199 from pressing the edge portion of the display panel 150 or the lower surface of the edge portion to damage the display panel 150.

4 is a partial perspective view of a display device according to another exemplary embodiment of the present invention. FIG. 5 is a cross-sectional view of the display device illustrated in FIG. 4 taken along the line II-II ′.

4 and 5, the display device 300 is substantially the same as the display device 100 illustrated in FIGS. 1 to 3 except for the row storage container 310 and the stuffer 370. Duplicate explanations are omitted.

The row receiving container 310 includes a bottom plate 311 and a row side wall 313. The row storage container 310 is provided with a receiving groove 315 for providing a space for the fastening member 399 and a fixing groove 317 to which the stuffer 370 is fixed is formed. Since the row storage container 110 shown in FIGS. 1 to 3 is substantially the same, duplicated description will be omitted.

An accommodation groove 315 is formed in the row sidewall 313 to provide an accommodation space of the fastening member 399. Specifically, the receiving groove 315 is formed on the short side of the row side wall 313 of the rectangular shape. The receiving groove 315 is formed to a predetermined depth from the outer surface and the upper surface of the row side wall 313 and is connected to the stepped portion 314. Accordingly, the receiving groove 315 has a base portion parallel to the bottom plate 311 and a side portion parallel to the row sidewall 313.

The fixing groove 317 is spaced apart from the receiving groove 315 to the inside of the row storage container 310 by a predetermined distance, and is formed to have a predetermined depth from an upper surface of the row side wall 313. In FIG. 4, the fixing groove 317 is formed to a predetermined depth from the step portion 314 corresponding to the receiving groove 315. In detail, a groove in which the stuffer 370 is disposed is formed in the stepped portion 314 corresponding to the accommodation groove 315, and the fixing groove 317 is formed so as not to interfere with the arrangement of the display panel 350. ) Is formed at a predetermined depth on the bottom surface of the groove.

A part 371 of the stuffer 370 is inserted into the fixing groove 317 and fixed, and the rest 373 of the stuffer 370 is bent to the fastening member disposed in the receiving groove 315. The display panel 350 extends between the reference numeral 399 and the display panel 350 overlaid on the fastening member 399. The remainder 373 of the stuffer 370 is bent again so that the remaining end 375 is disposed parallel to the side surface of the display panel 350. Accordingly, the stuffer 370 has a substantially '-' shape.

When the screw 399 is fastened to the first fastening hole 387 formed in the upper receiving container 380 by passing through the bracket 390, the end of the screw 399 is the upper receiving container 380. It protrudes inward of the upper sidewall 385 of and is received in the receiving groove 315. In this case, the stuffer 370 covers the edge portion of the display panel 350 to prevent the end of the screw 399 and the edge portion of the display panel 350 from interfering with each other.

As described in detail above, according to the present invention, the stopper prevents the fastening member fixing the display device from being in contact with the display panel and damaging the display panel or detaching from the designated position.

Therefore, even if the thickness of the side wall of the storage container of the display device is reduced and the height is reduced, the display device can be fixed at a predetermined position while preventing damage to the display panel. Accordingly, the stopper may be disposed on the sidewall of the storage container to reduce the thickness of the display device more easily.

 In addition, since the stopper prevents unexpected damage of the display panel by the fastening member, the reliability of the display device can be improved.

In the detailed description of the present invention described above with reference to the preferred embodiments of the present invention, those skilled in the art or those skilled in the art having ordinary skill in the art will be described in the claims to be described later It will be understood that various modifications and variations can be made in the present invention without departing from the scope of the present invention.

Claims (9)

Low storage containers; A display panel disposed on the row storage container and displaying an image; An upper storage container engaged with the row storage container while pressing an edge of the display panel; And A stuffer disposed between the display panel and the fastening member to prevent the fastening member penetrating the upper sidewall of the upper storage container from contacting the display panel in order to fix the upper container to a predetermined position. and a stopper). According to claim 1, wherein the row storage container includes a bottom plate and a row side wall disposed in the periphery of the bottom plate, Receiving grooves are formed in the row side wall to a predetermined depth from the outer surface and the upper surface of the row side wall, to provide a receiving space of the fastening member, The stuffer is disposed along the receiving groove and covers a portion of the display panel that is overlaid with the fastening member. The method of claim 2, wherein the stuffer A first surface covering a portion of the display panel overlaid on the receiving groove; A second surface facing the first surface and disposed at a base of the receiving groove; And And a third surface connecting the first surface and the second surface along a side of the receiving groove. According to claim 2, The upper side wall is formed with a first fastening hole corresponding to the receiving groove, A second fastening hole corresponding to the first fastening hole is formed, and as the fastening member is coupled to the first fastening hole through the second fastening hole, a bracket for fixing the upper storage container to a predetermined position is provided. The display device further comprises. The display device of claim 4, wherein the fastening member is a screw, and a screw thread is formed on an inner surface of one of the first fastening hole and the second fastening hole. According to claim 1, wherein the row storage container includes a row side wall formed with a bottom plate, a receiving groove providing a receiving groove for the fixing groove and the fastening member, And a part of the stuffer is inserted into the fixing groove, and the other part extends between the fastening member and the display panel overlaid on the fastening member. The method of claim 6, wherein the receiving groove is formed to a predetermined depth from the outer surface and the upper surface of the row side wall, And the fixing groove is spaced apart from the accommodation groove inwardly of the row storage container by a predetermined depth from an upper surface of the row side wall. The display device of claim 6, wherein the rest of the stuffer extends along an upper surface of the row sidewall, and an end portion thereof is bent to cover a side surface of the display panel. The display apparatus of claim 1, further comprising an optical unit disposed in the row storage container to provide light to the display panel as a basis of the image display.

Images