KR102218044B1 - Display Device - Google Patents

Abstract

The present invention relates to a display device, wherein a sheet holder is used as a connecting member for optimizing the shape of a cover bottom and a case top, connecting an optical sheet of a backlight unit to the cover bottom, and supporting a flat back cover. By using it, since a separate front cover or the like is not required, the structure of the outer portion and the side of the display device can be simplified, and the manufacturing process of the back cover is simplified.

Description

Display Device

The present invention relates to a display device, more specifically, to a display device including a flat plate back cover and an optical sheet holder for connecting an optical sheet of a backlight unit to a cover bottom.

As the information society develops, demands for display devices for displaying images are increasing in various forms, and in recent years, liquid crystal displays (LCDs), plasma display panels (PDPs), organic electric fields Various display devices such as an OLED (Organic Light Emitting Diode Display Device) are being used.

Among these display devices, a liquid crystal display (LCD) includes an array substrate including a thin film transistor, which is a switching element for controlling on/off each pixel region, and a color filter and/or a black matrix. It is composed of a display panel including an upper substrate and a liquid crystal material layer formed therebetween, a driving unit for controlling a thin film transistor, and a backlight unit (BLU) that provides light to the display panel. , The arrangement state of the liquid crystal layer is adjusted according to the electric field applied between the pixel (PXL) electrode and the common voltage (Vcom) electrode provided in the pixel area, and the transmittance of light is adjusted accordingly to display an image.

In the case of such a liquid crystal display device, there must be a backlight device that provides light from the outside, and such a backlight unit may include subunits such as a light source, a light guide plate, a reflector, and an upper sheet, and supports for mounting these subunits. It includes one or more frames or chassis as structures.

Such a frame or chassis includes a cover bottom, which is a plate-shaped member supporting some of the side and rear portions of the backlight unit, and a guide panel that is provided in relation to the cover bottom and supports between the backlight unit and the display panel. Or, a guide sheet or the like is used.

In general, the cover bottom is made of a metal material and the guide panel is made of a plastic material, but is not limited thereto.

In addition, since the cover bottom and the guide panel are interlocked with each other and are formed to extend from the side of the display device to a part of the front surface of the display panel, a case top may be used as a frame for protecting the display panel.

As an example of such a display device, there is a liquid crystal module (LCM), and a set device such as a television or a monitor including an LCM or a set electronic device forms the outermost part in addition to the cover bottom, which is a supporting structure of the display device. As a structure, a front cover and a back cover can be used.

Such a back cover is formed of a plastic structure having a complex structure because there must be an accommodation space for accommodating a display device therein, and for this purpose, the back cover was manufactured through injection molding.

As described above, in the case of a display device or set device having such a structure, a separate front cover and a back cover must be used in addition to the support structure of the display device, so not only the number of parts increases, but also the problem that the back cover occupies a large space. Since the cover must be manufactured by injection molding, there is a disadvantageous problem in terms of process and manufacturing cost.

The present invention is focused on this point, and proposes a method for simplifying the structure and manufacturing process of the back cover by using the cover bottom and the case top, which are support structures of the display device, as part of the outermost structure of the set device.

Against this background, an object of the present invention is to optimize the shape of the cover bottom and the case top supporting the backlight unit or the display panel in the display device, so that the cover bottom and the case top form part of the outer portion of the display device. The purpose.

Another object of the present invention is to provide a display device or a set device that does not need to use a separate front cover or middle cover by using a cover bottom, a case top, and a flat back cover as the outermost portion of a display device or a set device. .

Another object of the present invention is to provide a display device that simplifies a side structure of a display device by providing a sheet holder for connecting an optical sheet of a backlight unit to a cover bottom used as a part of the outermost portion of the display device.

Another object of the present invention is that a flat back cover can be used as the rear support structure of the display device, thus simplifying the display device structure and manufacturing the back cover through an extrusion process, thereby reducing the manufacturing cost of the back cover. It is to provide a display device that can be used.

In order to achieve the above object, an embodiment of the present invention provides a backlight unit including a display panel, and at least one optical sheet disposed on the light guide plate and the light guide plate and having a first holder locking hole in a partial area thereof, A bottom surface supporting a part of the backlight unit and a side surface extending from the bottom surface are provided, and a cover bottom having a holder coupling groove formed in a partial area of the side surface, and a first vertical extension inserted into the first holder locking hole of the optical sheet Providing a display device comprising a sheet holder including a second vertical extension portion inserted into a holder coupling groove of the cover bottom and a horizontal support portion connecting the first vertical extension portion and the first and second vertical extension portions do.

According to an embodiment of the present invention, by optimizing the shapes of the cover bottom and the case top supporting the backlight unit or the display panel in the display device, the cover bottom and the case top form part of the outer portion of the display device, and have a planar shape. There is an effect that the front cover and the middle cover for a display device or a set device can be removed by using the back cover.

In addition, by providing a sheet holder for connecting the optical sheet of the backlight unit to the cover bottom used as a part of the outermost portion of the display device, there is an effect of simplifying the side structure of the display device.

In addition, since a planar back cover can be used as the rear support structure of the display device, not only the structure of the display device is simplified, but also the back cover can be manufactured through an extrusion process, thereby reducing the manufacturing cost of the back cover.

1 is an exploded perspective view of a set electronic device including a display device according to the prior art.
2 is a cross-sectional view of a side portion of the display device of FIG. 1.
3 is a cross-sectional view of a display device according to an exemplary embodiment of the present invention.
4 is an enlarged cross-sectional view of an enlarged main part of the cross-sectional view of FIG. 3.
5 is an exploded perspective view of main components of a display device according to an exemplary embodiment of the present invention.
6 is a diagram illustrating only an optical sheet and a sheet holder among components of a display device according to an exemplary embodiment of the present invention.
7 shows a detailed configuration of a seat holder according to an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In adding reference numerals to elements of each drawing, the same elements may have the same numerals as possible even if they are indicated on different drawings. In addition, in describing the present invention, when it is determined that a detailed description of a related known configuration or function may obscure the subject matter of the present invention, a detailed description thereof may be omitted.

In addition, in describing the constituent elements of the present invention, terms such as first, second, A, B, (a), (b) may be used. These terms are only for distinguishing the component from other components, and the nature, order, order, or number of the component is not limited by the term. When a component is described as being "connected", "coupled" or "connected" to another component, the component may be directly connected or connected to that other component, but other components between each component It is to be understood that is "interposed", or that each component may be "connected", "coupled" or "connected" through other components.

1 is an exploded perspective view of a set electronic device including a display device according to the prior art to which the present invention can be applied, and FIG. 2 is a cross-sectional view of a side portion of the display device of FIG. 1.

As shown in FIG. 1, a set device including a display device to which the present invention can be applied includes a display device 100 such as a liquid crystal module (LCM), and a plastic covering part of the side and the front part of the display device. It is configured to include a front cover 210 made of material, and a back cover 220 or a rear cover covering a part of the side and the entire rear of the display device.

The display device 100 is typically a liquid crystal display device, but is not limited thereto, and all types of display devices such as a plasma display device (PDP), an organic electric field, and a display device (OLED) may be used.

A detailed configuration of the display device 100 will be described with reference to FIG. 2 as follows.

The display device includes a display panel 160 such as a liquid crystal display panel and a backlight unit 130 disposed under the display panel to irradiate light to the display panel, and supports the backlight unit 130 and covers the entire rear surface of the display device. It includes a cover bottom 120 made of metal or plastic that extends.

In addition, a guide panel 140 made of a plastic material, which is fixed to the cover bottom and connects the backlight unit 130 and the display panel 160, may be additionally provided. The double-sided tape 170 is attached to a part of the upper surface of the guide panel 140 and the display panel 160 is disposed thereon, so that the display panel may be fixedly mounted.

In FIG. 1, it is illustrated that the side portion of the guide panel 140 is disposed outside the side portion of the cover bottom 120.

Further, the display device 100 may additionally include a case top 110 that covers the side surface of the guide panel disposed at the outermost side and extends bending to a part of the front surface of the display panel to protect the front edge of the display panel. .

The case top 110 surrounds the side portion of the guide panel 140 and extends to a partial area of the front portion of the display panel 160 to protect the display panel and at the same time print for driving the display device disposed behind the cover bottom. A function of protecting a chip-on-film (COF) circuit, which is a connection circuit for connecting a circuit board (not shown) and a display panel, is performed.

In the case of a liquid crystal display panel, the display panel 160 again includes a plurality of gate lines, data lines, and pixels defined in crossing regions thereof, and a thin film transistor, which is a switching element for controlling light transmittance in each pixel. It may be configured to include an array substrate, an upper substrate including a color filter and/or a black matrix, and a liquid crystal material layer formed therebetween.

Meanwhile, the display panel to which the present invention can be applied is not limited to such a liquid crystal display panel, and may include not only a display device such as a plasma display, but also a display device that emits light such as OLED.

As shown in FIG. 2, the backlight unit 130 used in a liquid crystal display device to which an embodiment of the present invention can be applied is a light source module including a light source such as an LED, a holder for fixing the light source, and a light source driving circuit. (Not shown), a light guide plate (LGP) or diffusion plate for diffusing light to the entire panel area, a reflector plate for reflecting light in the direction of the display panel, and an LED flexible circuit that controls the on/off of the light source And, it may include sub-units such as one or more optical films or sheets that are disposed on the light guide plate to improve brightness, diffuse and protect light, and the like.

In addition, the cover bottom 120 constituting the display device 100 is a plate-shaped member made of a metal or plastic material, and extends from the rear portion supporting the entire rear surface of the display device and covers a portion of the side surface of the backlight unit while covering the guide panel 140. Includes a side portion coupled to the side portion of).

The guide panel 140 is a plastic structure for attaching the display panel 160 from the upper side while being fixedly coupled to the side surface of the cover bottom 120 and covering a part of the front surface of the backlight unit 130.

Meanwhile, as shown in FIG. 1, in addition to the display device 100, a front cover 210 and a back cover 230 are used to configure the electronic set device.

The front cover 210 is a member that covers the entire unsmooth side of the display device 100 and extends to a part of the front side of the display panel in a "L" shape to cover and protect a part of the front surface of the display device.

Such a front cover is usually made of a plastic material, and the front cover 210 as shown in FIG. 1 has a double structure including an inner side 214 and an outer side 216, and a screw on the inner side 214 Since a hole is formed, the side of the case top 110, the side of the guide panel 140, and the side of the cover bottom 120 are fixed together through the side coupling screw 212, so that the front cover 210 is attached to the display device ( 100).

Meanwhile, the back cover 220 constituting the set electronic device includes a rear portion of the display device, that is, a rear portion covering the entire rear portion of the cover bottom 120, and an outer side surface 216 of the front cover 210 by bending and extending from the rear portion. It includes a side portion that is coupled in contact with the tip of the.

A screw hole is formed in the rear portion of the back cover, and a screw hole is formed at a position corresponding to the cover bottom 120 of the display device, so that the back cover 220 and the cover bottom ( 120) are fixedly coupled.

In this specification, the term "display device" refers to a display device such as a liquid crystal module (LCM) including a display panel and a driver for driving the display panel, as well as a television, which is a finished product including such an LCM, It is used as a concept including a set electronic device or even a set device such as a computer monitor, a mobile electronic device such as a smart phone or an electronic pad.

That is, the display device in the present specification is used to include not only a narrow display device such as an LCM, but also a set device, which is an application product including the same.

In a conventional display device as shown in FIGS. 1 and 2, a case top and a front case are used as members covering the front and side surfaces of the display device, and a member covering the rear side is also a cover bottom such as an LCM and a bag for a set device. There is a side where the cover is used twice.

That is, in the narrow display device and the set device including the same, dual members having the same function are used, thereby complicating the structure, increasing the size of the product, and increasing the manufacturing cost.

In addition, the back cover has a disadvantage of inconvenient because the structure is complicated and must be manufactured by injection molding or the like.

Meanwhile, in recent years, as a method of overcoming such shortcomings, a method of directly using an outer structure of the display device such as the cover bottom 120 or the case top 110 of the display device as an outer structure of the entire set device has been considered.

However, in order to directly use the outer structure of the display device such as the cover bottom 120 or the case top 110 as the outer structure of the entire set device, a structure such as a conventional cover bottom must be modified, and simply Just removing the back cover is not enough.

The present invention is focused on this point, by modifying the shape of the cover bottom of the display device, the guide panel, the back cover, etc., and thereby providing a sheet holder for fixing the optical sheet of the backlight unit. The cover bottom, case top, and flat back cover of the display device can directly configure the outer periphery of the display device without the need for a separate front cover.

Hereinafter, a detailed configuration of a display device according to an embodiment of the present invention and a sheet holder used therein will be described in detail with reference to FIGS. 3 to 7.

3 is a cross-sectional view of a display device according to an exemplary embodiment of the present invention, FIG. 4 is an enlarged cross-sectional view of a major part of the cross-sectional view of FIG. 3, and FIG. 5 is a major component of a display device according to an exemplary embodiment of the present invention. It is an exploded perspective view.

3 to 5, the display device according to the exemplary embodiment of the present invention includes a display panel 360, a backlight unit 330 for providing light to the display panel, and a cover bottom supporting at least a portion of the backlight unit. It is configured to include a (Cover Bottom; 320) and a sheet holder (Sheet Holder) 400 for connecting the optical sheet of the backlight unit to the cover bottom.

The sheet holder 400, which is a unique component used in the embodiment of the present invention, is a plate-like member having several bent portions made of a metal material, etc., and a first holder locking hole formed in the edge region of the at least one optical sheet 338 ( A first vertical extension portion 410 inserted into the 339), and a holder coupling groove that is spaced apart from the first vertical extension portion and extends in the same direction substantially parallel to the first vertical extension portion and is formed inside the side of the cover bottom ( It may be configured to include a second vertical extension portion 420 inserted into the 322, and a horizontal support portion 440 formed in the horizontal direction between the first and second vertical extension portions.

In addition, the second vertical extension portions 420 of the sheet holder 400 inserted and fixed to the cover bottom have both ends of the sheet holder 400 in the longitudinal direction, that is, two second vertical extension portions 420 for each sheet holder. Can include.

The first vertical extension part 410 and the second vertical extension part 420 are bent and extended in the lower direction (ie, the back cover direction) on both sides of the horizontal support part in the width direction.

In addition, between the second vertical extension portions 420 on both sides, a third vertical extension portion 430 extending in a direction opposite to the first and second vertical extension portions, that is, in an upper direction, and in contact with the inner surface of the side surface of the cover bottom. ) May be additionally formed.

That is, the sheet holder 400 functions to connect the optical sheet to the cover bottom by being fixed at one end by being hooked on the optical sheet and the other end being inserted and fixed in the cover bottom.

In addition, a fixing protrusion 422 may be formed in the second vertical extension part 420 of the sheet holder 400 to be inserted into and fixed to the holder coupling groove 322 of the cover bottom 320. That is, a partial region of the plate-like member forming the second vertical extension is cut out and then punched or pressed outward to form a protrusion.

When the second vertical extension 420 is inserted into the holder coupling groove 322 of the cover bottom, the fixing protrusion 422 formed in this way is inserted into the holder coupling groove 322 so that the seat holder 400 is It functions to prevent separation from the cover bottom.

The detailed configuration of the sheet holder 400 will be described in more detail with reference to FIG. 7 below.

The backlight unit 330 again includes a light source module (not shown), a reflective plate 334, a light guide plate 336, and at least one optical sheet 338 disposed on the light guide plate, and the edge region of the optical sheet 338 is described above. A first holder locking hole 339 is formed through which a first vertical extension portion of the sheet holder 400 is inserted and caught.

The first holder locking hole 339 may be formed by perforating in a long hole shape larger than the width of the first vertical extension portion 410 of the sheet holder.

The first holder locking hole 339 may be formed directly at the edge of the optical sheet, but as shown in FIG. 5, it is formed in the sheet extension portion 337 formed to protrude and extend while having a certain width at the edge of the optical sheet 338. It could be.

In addition, the cover bottom 320 includes a bottom surface 324 supporting a lower portion of the backlight unit and a side surface 326 extending from the bottom surface, and a second portion of the sheet holder 400 is provided in a partial area inside the side surface 326. The holder coupling groove 322 into which the vertical extension is inserted is formed.

Although it will be described in more detail below, the cover bottom is usually formed of a frame or frame-shaped metal part, and the holder coupling groove 322 is pressed or caulked inward after cutting a portion of the side surface 326 of the cover bottom. It can be formed into a receiving groove having a predetermined width by protruding.

On the other hand, according to an embodiment of the present invention, the cover bottom 320 does not cover the entire rear surface of the backlight unit, but the bottom portion is configured in the form of a frame or frame so that only a portion of the edge of the backlight unit is covered, and one bent portion is formed on the bottom surface. 328 is formed.

A flat back cover 390 may be additionally disposed in a central area inside the bent portion of the cover bottom 320, and a sponge portion 380 is provided to maintain a gap between the back cover 390 and the backlight unit. Can be placed.

That is, as shown in FIG. 3, the flat back cover is coupled while covering the bottom of the cover bottom extending into the bent portion 328 of the cover bottom 320, and as a result, the rear surface of the display device is entirely flat from the center to the edge. It will be flat.

In this specification, the cover bottom 320 may be used in other expressions such as a base frame, a metal frame, a metal chassis, and a chassis base, and the display panel and As a support for fixing at least one of the backlight units, it should be understood as a concept including all types of frames or plate-shaped structures disposed at the most base of the display device.

In addition, the display device according to the exemplary embodiment of the present invention is disposed on the edge of the optical sheet 338 described above, instead of a guide panel having a complicated bending structure as shown in FIG. 2, and is used to support the display panel disposed thereon. It may further include a guide sheet 340 which is a sheet-shaped guide panel.

The guide sheet 340 is a long plate-shaped or strip-shaped structure having a predetermined width that overlaps with a portion of the edge of the optical sheet 338 and is disposed on the optical sheet, and may be formed of a conventional plastic material.

The guide sheet 340 has a second holder locking hole 342 formed at a position corresponding to the first holder locking hole 339 of the optical sheet, so that the first vertical extension of the sheet holder 400 The guide sheet 340 and the optical sheet 338 are simultaneously caught and supported by the portion 410.

A double bonding tape 370 having a predetermined width is disposed on the upper side of the guide sheet 340, and the display panel 360 is adhered and fixed thereon.

The guide sheet 340 in the present specification may be replaced with other expressions such as a plastic sheet, a plastic chassis, a p-chassis, a support main, a main support, a mold frame, etc., and as a frame-shaped structure extending along 3 or 4 sides It should be understood to include all types of members disposed between the backlight unit 330 and the display panel 360 and used to support the display panel 360 positioned thereon.

The guide sheet 340 is made of a mold material of synthetic resin such as polycarbonate, and may be manufactured through injection molding or extrusion molding, but is not limited thereto.

That is, in the embodiment of the present invention as shown in FIGS. 3 to 5, when compared with the structures of FIGS. 1 and 2, a flat guide sheet 340 is used instead of the guide panel 140 having a complex bending structure, The guide sheet 340 is simply positioned above the backlight unit, and is fixedly coupled to the cover bottom like the guide panel 140 of FIGS. 1 and 2 to firmly support the display panel 160 disposed thereon from the bottom. It is not a form.

Therefore, in the embodiment of the present invention using the simple guide sheet 340 in the form of a flat plate, the backlight unit 320 is all members supporting the display panel 360 disposed on the upper side, This can be weak.

Accordingly, in the embodiment of the present invention, the sheet holder 400 is used to firmly fix the optical sheet 338, which is the uppermost structure of the backlight unit 330, to the cover bottom 320, and by such a sheet holder As the optical sheet 338 is strongly fixed/coupled to the cover bottom, the guide sheet 340 disposed thereon and the lower portion of the display panel 360 are firmly supported.

In addition, the display device according to the exemplary embodiment of the present invention further includes a case top 310 for covering and protecting a front edge of the display panel and a side surface of the display device.

The case top 310 includes a front cover portion 312 covering a front edge region of the display panel and a side portion of a dual structure that is bent and extended downward from the front cover portion 312.

The side portion of the case top 310 again includes an inner portion 314 and an outer portion 316, and the tip of the inner portion 314 extends downward from the front cover portion 312, and a horizontal support portion of the seat holder 400 ( It extends to the top of the 440, the outer portion 316 is formed to extend downwardly from the outside of the inner portion 314 as well to cover the outside of the side surface of the cover bottom 320.

In addition, the case top in the present specification is a concept including all types of covers, frames, etc. for protecting the front part of the display panel by extending from the side of the display device to a part of the front surface. It is not limited to terms.

As a result, since the outer surface of the outer portion 316 of the case top 310 forms the outer side portion of the entire display device, a separate front cover or a middle cover such as FIG. 2 is not required.

The remaining components shown in FIGS. 3 to 5 will be described in more detail.

Meanwhile, the display panel 360 used in the exemplary embodiment of the present invention may be a liquid crystal display panel, but is not limited thereto, and includes all types of display panels such as a plasma display and an organic light emitting diode (OLED) display panel. It must be understood.

In the case where the display panel 360 according to an embodiment of the present invention is a liquid crystal display panel, a plurality of gate lines and data lines, pixels defined in crossing regions thereof, and light transmittance of each pixel are adjusted again. An array substrate including a thin film transistor (TFT), which is a switching element for, an upper substrate having a color filter and/or a black matrix, and a liquid crystal material layer formed therebetween, and a touch window ( 362 may be additionally disposed on the upper front surface of the display panel.

In addition, the backlight unit 330 used in the exemplary embodiment of the present invention includes a light source module (not shown) including a light source (LED) such as an LED in detail, and a light guide plate (LGP) 336 for diffusing light to the entire panel area. ) Or a diffusion plate, a reflector 334 for reflecting light in the direction of the display panel, an LED flexible circuit (LED FPC; not shown), which is a circuit for controlling the on/off of the light source, and the luminance by being disposed on the light guide plate It may include sub-units such as one or more optical films or sheets 338 that are disposed for the purpose of enhancement, diffusion and protection of light, and the like.

The light source module in the embodiment of the present invention may include a light source element and a light source holder having a long plate structure including an LED driving circuit for supporting the light source element and driving the light source, and the light source element of the light source module is a light emitting diode ( LED) or a light emitting diode strip may be used, but the present invention is not limited thereto, and any type of light source may be used as long as the light required for the display panel can be provided.

The light guide plate (LGP) 346 may be formed of a rectangular clear plastic sheet that is generally die-cut, extruded, or injection-molded from a plastic sheet, and light from a light source such as a light emitting diode array is transmitted to the edge of the light guide plate. The light is emitted from the light guide plate and diffuses across the rear surface of the display panel while being totally reflected inside the light guide plate, and the light emitted through the flat top surface of the light guide plate functions as a backlight of the display panel.

The reflecting plate 334 is located on the rear surface of the light guide plate 346 and reflects the light that has passed through the rear surface of the light guide plate 346 toward the display panel 360 to improve the brightness of light.

The optical sheet 338 on the top of the light guide plate 336 includes a diffusion sheet and at least one light collecting sheet, and diffuses or condenses the light that has passed through the light guide plate 336 so that a more uniform surface light source is provided to the display panel 360. It is to be joined.

At this time, the optical sheet 338 used in the embodiment of the present invention may be formed with a sheet extension 337 protrudingly extended while having a predetermined width at the edge as described above, and the sheet extension 9339 may have a sheet A first holder locking hole 339 through which the first vertical extension portion of the holder 400 is inserted and caught may be formed.

As described above, according to the embodiment of the present invention described in FIGS. 3 to 5, the optical sheet 338 of the backlight unit is rigidly connected to the cover bottom 320 using the sheet holder 400, thereby supporting the display panel. The structure of the guide sheet can be simplified.

In addition, since the back cover 390 having a flat plate shape is used instead of the back cover 220 having a complex structure manufactured by conventional injection molding, the manufacturing process of the back cover can be simplified by extrusion molding.

In addition, since the outer portion of the case top for protecting a part of the front surface and the side surface of the display panel is configured to form an outer side portion of the entire display device, there is an effect that a separate front cover or a middle cover is not required.

6 illustrates only an optical sheet and a sheet holder among components of a display device according to an exemplary embodiment of the present invention, and FIG. 7 illustrates a detailed configuration of a sheet holder according to an exemplary embodiment of the present invention.

6 and 7, the sheet holder 400 according to an embodiment of the present invention is a connecting member disposed between the optical sheet 330 and the cover bottom 320 to connect the optical sheet to the cover bottom, It may be formed of a metal plate-like member having several bent portions. Of course, the sheet holder 400 is not limited to a metal material, and may be formed of another material such as plastic.

More specifically, the seat holder 400 has a horizontal support portion extending in a horizontal direction and a plurality of vertical bending extension portions bent in a substantially right angle direction from the horizontal support portion 440.

The plurality of vertical bent extensions further include a first vertical extension 410 and a second vertical extension 420 extending downward from the horizontal support 440, that is, in the back cover direction, and in the horizontal support 440 And a third vertical extension part 430 extending upward, that is, toward the front side of the display panel.

The first vertical extension part 410 is formed to have a certain width in the central area when viewed in the longitudinal direction of the sheet holder, and is inserted into the first holder locking hole 339 formed in the edge area of one or more optical sheets 338 Is formed to be connected to the optical sheet 338 side.

The second vertical extension part 420 is formed on opposite sides of the first vertical extension part 410 and may be formed on both sides of the sheet holder in the longitudinal direction, and is spaced apart from the first vertical extension part, but the first vertical extension part It extends in the same direction substantially parallel to and is inserted into the holder coupling groove 322 formed inside the side surface of the cover bottom.

By configuring in this way, since each sheet holder is fixed at two points of the cover bottom 320, it is relatively more rigidly connected to the cover bottom than the first vertical extension part connected to the optical sheet.

Of course, in the drawing, one first vertical extension part 410 is formed in the central area of the sheet holder, and two second vertical extension parts 420 are formed on both sides of the sheet holder, but are not limited thereto. Two first vertical extensions caught on the optical sheet may be formed on both sides of the sheet holder.

In addition, between the second vertical extensions 420 on both sides, a third vertical extension 430 extending in a direction opposite to the first and second vertical extensions, that is, in an upper direction, and in contact with the inner surface of the side surface of the cover bottom May be additionally formed. The third vertical extension part 430 contacts the inner surface of the side surface of the cover bottom 320 to prevent the seat holder 400 from flowing and function as a reinforcing structure that strongly supports the seat holder.

In addition, a fixing protrusion 422 may be formed in the second vertical extension part 420 of the sheet holder 400 to be inserted into and fixed to the holder coupling groove 322 of the cover bottom 320. That is, a partial region of the plate-like member forming the second vertical extension is cut out and then punched or pressed outward to form a protrusion.

This fixing protrusion 422 is for a firm coupling between the second vertical extension 420 and the holder coupling groove 322 of the cover bottom 320, the second vertical extension 420 is a holder coupling of the cover bottom After being inserted into the groove 322, the fixing protrusion 422 is inserted into the holder coupling groove 322 in a form that is caught in the inside, thereby preventing the sheet holder 400 from being separated from the cover bottom.

In addition, a guide sheet pressing protrusion 422 may be formed on the horizontal support portion 440 of the sheet holder to partially protrude downward in order to press the guide sheet 340 disposed under the sheet holder. This guide sheet pressing protrusion 442 prevents the position of the guide sheet from being changed by pressing the guide sheet 340 disposed under the horizontal support part of the seat holder 400 when all parts are assembled as shown in FIGS. 4 and 5 It is used to

By using such a sheet holder to firmly connect the optical sheet of the backlight unit to the cover bottom, it is possible to simplify the structure of the guide sheet supporting the display panel and to secure the lower supporting force of the display panel.

According to the embodiment of the present invention as described above, by optimizing the shapes of the cover bottom and the case top, the cover bottom and the case top form part of the outer periphery of the display device, and a planar bag disposed on the rear surface of the cover bottom. By enabling the cover to be used, there is an effect that the front cover and the middle cover for the display device or the set device can be removed.

In addition, unlike the conventional back cover structure manufactured by injection molding, a flat back cover can be used as the rear support structure of the display device, which simplifies the structure of the display device and enables the manufacture of the back cover through the extrusion process. By doing so, there is an effect of reducing the manufacturing cost of the back cover.

On the other hand, by using a sheet holder as a connecting member to firmly support the optical sheet of the backlight unit by connecting it to the cover bottom, the structure of the guide sheet supporting the display panel, etc., is simplified, resulting in simplification of the side configuration of the display device. There is also an effect that you can make it.

The description above and the accompanying drawings are merely illustrative of the technical idea of the present invention, and those of ordinary skill in the technical field to which the present invention pertains, combinations of configurations without departing from the essential characteristics of the present invention Various modifications and variations, such as separation, substitution, and alteration, will be possible. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain the technical idea, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

100: display device 210: front cover
220: back cover 320: cover bottom
322: holder coupling groove 330: backlight unit
338: optical sheet 339: first holder engaging hole
340: guide sheet 342: second holder engaging hole
310: case top 360: display panel
380: flat back cover 400: seat holder
410: first vertical extension 420: second vertical extension
430: third vertical extension 440: horizontal support

Claims (10)

Display panel;
A backlight unit disposed on the light guide plate and the light guide plate and including at least one optical sheet having a first holder locking hole in a partial area of the edge;
A cover bottom having a bottom surface supporting a part of the backlight unit and a side surface extending from the bottom surface, and having a holder coupling groove in a partial area of the side surface;
A second vertical extension having a first vertical extension inserted into the first holder engaging hole of the optical sheet and a fixing protrusion inserted into and fixed to the holder coupling groove of the cover bottom, and the first vertical extension and the first And a sheet holder including a horizontal support part connecting between the two vertical extension parts.
Display device comprising a. The method of claim 1,
The second vertical extension portion is bent from the horizontal support portion at both ends of the sheet holder in the longitudinal direction. The method of claim 2,
The display device further includes a third vertical extension portion between the second vertical extension portions on both sides of the first and second vertical extension portions and extending in a direction opposite to the first and second vertical extension portions to contact an inner surface of a side surface of the cover bottom. The method of claim 1,
The display device further comprises a flat back cover disposed to overlap with a portion of the bottom of the cover bottom to cover the rear surface of the backlight unit. The method of claim 1,
It is disposed on the edge of the optical sheet, and further includes a guide sheet for supporting the display panel disposed thereon, wherein the guide sheet is provided with a second holder locking hole into which the first vertical extension of the sheet holder is inserted Display device. The method of claim 1,
A display device further comprising a case top for covering a front edge region of the display panel and an entire side surface of the display device. The method of claim 6,
The case top includes a front cover portion and an inner portion and an outer portion bent and extended from the front cover portion, and the inner portion tip extends above the horizontal support portion of the seat holder, and the outer portion covers the outside of the side surface of the cover bottom. Display device that is extended to delete The method of claim 5,
A display device including a guide sheet pressing protrusion for pressing the guide sheet disposed under the sheet holder on the horizontal support portion of the sheet holder. The method of claim 4,
The back cover is a display device in the form of a flat plate manufactured by extrusion molding.

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