KR102388159B1 - Display device - Google Patents

Abstract

Embodiments of the present invention include a display panel, a middle cabinet, and a back cover, and a first support part surrounding an end of the display panel in the middle cabinet is connected to each other by abutting the ends along the edge of the display panel, and the display panel is seated In the second support part, the first coupling part and the second coupling part are engaged with each other and connected to the adjacent second support part, thereby eliminating the step difference of the middle cabinet to reduce the appearance defect, and to reduce the step defect such as the surface protrusion of the coupling part and the depression of the surface. To provide a display device capable of preventing the display panel and the middle cabinet from lifting and the display panel being damaged.

Description

display device {DISPLAY DEVICE}

Embodiments of the present invention relate to a display device, and more particularly, it is possible to reduce the appearance defect by reducing the width of the bezel, which is the outer edge of the display panel, and eliminating the step difference in the middle cabinet connected along the edge of the display panel, The present invention relates to a display device capable of preventing a step difference such as a surface protrusion and a surface depression of a coupling portion when a middle cabinet is connected, thereby preventing a floating phenomenon between a display panel and a middle cabinet and damage to the display panel.

In general, as a flat panel display device, a liquid crystal display device, a plasma display device, a field emission display device, an organic light emitting display device, etc. Although this is being actively studied, liquid crystal display devices and organic light emitting display devices have recently been in the spotlight because of the advantages of mass production technology, ease of driving means, and realization of high quality.

1 is a cross-sectional view showing a conventional display device, and is composed of a first substrate 101 and a second substrate 102 facing the first substrate 101, and the first and second substrates 101 and 102 are They are spaced apart from each other, and their edges are sealed through a sealing member and bonded to form the OLED panel 110 .

At this time, a polarizing plate 140 is attached to the upper surface of the OLED panel 110 , and the back cover 120 comprising the horizontal surface 121 and the side surface 123 as the back surface of the OLED panel 110 is an adhesive member 125 , and The side 123 of the back cover 120 is coupled to the buffer member 130 , and the case 160 is coupled to the outside thereof while surrounding a portion of the front surface of the OLED panel 110 .

However, such a conventional display device has a problem in that the width W1 of the bezel, which is the outer edge of the display device, is wide, so that it does not meet the recent consumer demand to purchase the bezel-less type.

In addition, even when the case 160 is removed to implement a bezel-less type display device, the border gap W2 is wide and thus not only does not meet the needs of consumers who want a borderless type, but also lowers customer satisfaction with the appearance of the display device, resulting in lower commercial quality. There was a problem with this falling.

Therefore, while reducing the width of the bezel, which is the outer edge of the display panel, it is possible to prevent defective steps of members disposed along the edge of the display panel, increase consumer satisfaction with the overall appearance of the display device, increase the commercial value and increase screen immersion. The need for a display device capable of performing is increasing.

Against this background, an object of the embodiments of the present invention is to reduce the appearance defect by reducing the width of the bezel, which is the outer edge of the display panel in the display device, and eliminating the step difference of the middle cabinet connected along the edge of the display panel. An object of the present invention is to provide a display device capable of increasing consumer satisfaction with the appearance of the display device, doubling the marketability, and increasing screen immersion.

Another object of the embodiments of the present invention is to prevent a step defect such as a surface protrusion of a coupling part when a middle cabinet disposed along the edge of a display panel is connected and coupled in a display device, such as a display panel and a lifting phenomenon of the middle cabinet. and to provide a display device capable of preventing damage to the display panel and the like.

In addition, the object of the embodiments of the present invention is not limited thereto, and other objects not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, embodiments of the present invention include a display panel, a middle cabinet, and a back cover, and a first support portion surrounding an end of the display panel in the middle cabinet is aligned with each other along the edge of the display panel. The second support part that is connected to each other and on which the display panel is seated is connected to the adjacent second support part by engaging the first coupling part and the second coupling part with each other, thereby reducing the appearance defect by eliminating the step difference of the middle cabinet, and the surface of the coupling part Disclosed is a display device capable of preventing step defects such as protrusion and depression, thereby preventing a display panel and a middle cabinet from lifting and damaging the display panel.

As described above, according to the embodiments of the present invention, it is possible to reduce the appearance defect by reducing the width of the bezel, which is the outer edge of the display panel, and eliminating the step difference between the middle cabinets connected along the edge of the display panel, thereby reducing the appearance of the display device. It has the effect of increasing consumer satisfaction with the appearance of the product, doubling the commercial value and increasing screen immersion.

In addition, according to the embodiments of the present invention, when the middle cabinet arranged along the edge of the display panel is connected and coupled, a step defect such as a surface protrusion of the coupling portion is prevented, and the display panel and the middle cabinet are lifted and caused by this. There is an effect of preventing the display panel from being damaged.

1 is a cross-sectional view showing a conventional display device;
2 is an exploded perspective view schematically showing a display device according to embodiments of the present invention;
3 is a rear view showing a part of a display device according to embodiments of the present invention;
Figure 4 is an exploded perspective view of Figure 3;
5 is a cross-sectional view of FIG. 3;
6 is an exploded perspective view schematically showing a part of a display device according to embodiments of the present invention;
7 is a rear view showing a part of a display device according to embodiments of the present invention;
FIG. 8 is an exploded perspective view of FIG. 3 .

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to exemplary drawings. In adding reference numerals to components of each drawing, the same components may have the same reference numerals as much as possible even though they are indicated in different drawings. In addition, in describing the embodiments of the present invention, if it is determined that a detailed description of a related well-known configuration or function may obscure the gist of the present invention, the detailed description may be omitted.

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

2 is an exploded perspective view schematically showing a display device according to embodiments of the present invention, FIG. 3 is a rear view showing a part of the display device according to embodiments of the present invention, and FIG. 4 is an exploded perspective view of FIG. 3 , FIG. 5 is a cross-sectional view of FIG. 3 , FIG. 6 is an exploded perspective view schematically showing some of the display devices according to embodiments of the present invention, and FIG. 7 is a rear view showing some of the display devices according to embodiments of the present invention, FIG. 8 is an exploded perspective view of FIG. 3 .

As shown in these drawings, in the display apparatus 200 according to embodiments of the present invention, the display panel 201 and the first support part 211 are connected to each other by abutting their ends along the edges of the display panel 201 . ) and a second support part 213 extending from the inner surface of each of the first support parts 211 so that the display panel 201 is seated on the front surface and the ends are coupled to each other, a pair of second support parts coupled to each other ( Among 213a and 213b), a first coupling part 217 is provided on one side and a second coupling part 215 corresponding thereto is provided on the other side of the middle cabinet 210 and the middle cabinet 210 that are engaged with each other. and a back cover 203 seated on the rear surface of the second support 213 .

The display apparatus 200 according to the embodiments of the present invention reduces the height of the middle cabinet 210 connected along the edge of the display panel 201 while reducing the width of the bezel, which is the outer edge of the display panel 201 . It is designed to reduce appearance defects by removing it, and to prevent step defects such as surface protrusion and surface depression of the coupling portion when the middle cabinet 210 is coupled.

Here, the middle cabinet 210 is provided with a first support portion 211 and a second support portion 213 disposed perpendicular to each other, and the first support portion 211 surrounding the end of the display panel 201 is provided with the display panel ( The second support part 213 on which the display panel 201 is seated is connected to each other by contacting the ends along the edge of the 201 , and the first coupling part 217 and the second coupling part 215 are engaged with each other and adjacent to each other. is connected to the second support 213 .

That is, the middle cabinet 210 is provided in a rectangular rectangular frame shape to surround the outer edge of the display panel 201 and is coupled and connected in at least one place. In embodiments of the present invention, the lower middle cabinet 210a at the lower corner portion ) and the side middle cabinet 210b will be described as being coupled to each other and connected as an example.

In addition, the middle cabinet 210 may be formed of a synthetic resin or metal material such as plastic in consideration of formability and material cost. can be formed.

The display panel 201 in the above embodiments of the present invention may be configured as a liquid crystal display panel or an organic light emitting display panel. In the case of the organic light emitting display panel, a gate line, a data line, and a power supply (VDD) line It may be configured to include a lower substrate including a plurality of light emitting cells formed for each defined region, and an upper substrate facing and bonded to the lower substrate.

In addition, each of the plurality of light emitting cells formed on the lower substrate is controlled according to the switching of at least one switching transistor connected to the gate line and the data line, at least one driving transistor connected to the switching transistor and the power supply (VDD) line, and the driving transistor. It may be configured to include an organic light-emitting device (eg, OLED) that emits light by an electric current, and the upper substrate may include a desiccant for protecting the light-emitting device from moisture or oxygen in the atmosphere.

In this case, the upper substrate may further include an organic light emitting device connected to the driving transistor, and in this case, the light emitting device of the lower substrate may be omitted.

In embodiments of the present invention, the display panel 201 is seated on the front surface of the second support unit 213 of the middle cabinet 210. In the case of an organic light emitting display, a backlight that emits light is a panel that emits light by itself. Units are not constituted.

In addition, the liquid crystal display panel may include case members for assembling the backlight unit, the driving circuit unit, the liquid crystal display panel and the backlight unit into one module, and the driving circuit unit includes a data driving circuit (source driving circuit). , a gate driving circuit (scan driving circuit), a timing controller, a printed circuit board, and the like.

In addition, in the case of a liquid crystal display panel, a liquid crystal layer may exist between the upper substrate and the lower substrate, the upper substrate may be a color filter substrate corresponding to the viewing screen, and the lower substrate may be a thin film transistor substrate.

In the case of an organic light emitting display panel, an organic compound in the pixel array may deteriorate when exposed to moisture or oxygen. In order to prevent such a pixel deterioration problem, an encapsulation member 201c is bonded to the rear surface of the display panel and the pixel array can be sealed.

In embodiments of the present invention, when the display panel is an organic light emitting display panel, a metal substrate or a glass substrate may be used for the encapsulation member 201c bonded to the rear surface of the display panel 201 , and the front surface of the display panel 201 may be The polarizing plate 201a is adhered.

In addition, in order to prevent light leakage from being emitted from the pixel array through the side surface, a side seal member 201b may be provided on the side surface of the display panel 201 .

Here, the side seal member 201b may be made of a curable resin to which a black pigment is added, and the side seal member 201b absorbs light emitted from the pixel array, which is emitted through the side surface of the display panel 201 . Prevents light leakage.

In addition, a plurality of flexible circuit films (not shown) on which an IC (not shown) is mounted are electrically connected to the display panel 201 on the rear surface of either end of the display panel 201 formed in a rectangular shape, and the display panel ( 201) and a printed circuit board arranged parallel to it is installed.

In addition, the plurality of flexible circuit films are attached to the pad part and the printed circuit board by a TAB (Tape Automated Bonding) process, and may be made of TCP (Tape Carrier Package) or COF (Chip On Flexible Board or Chip On Film). there is.

Accordingly, the display panel 201 is electrically connected or connected to the printed circuit board through the plurality of flexible circuit films, and the printed circuit board is electrically connected to the plurality of flexible circuit films to display images on the display panel 201 . Various signals are provided to indicate

In embodiments of the present invention, the middle cabinet 210 includes a first support part 211 disposed along the edge of the display panel 201 and a second support part extending vertically from the inner surface of the first support part 211 ( 213) is provided, and the first support part 211 is connected to the ends of the first support part 211 disposed along the edge of the display panel 201 while being in contact with each other, and the second support part 213 is connected to one of the ends of the first support part 211. The first coupling part 217 and the second coupling part 215 on the other side are engaged and connected to each other.

Here, as shown in FIG. 4 , the first coupling part 217 is provided as a recess recessed in the rear surface of either the second support part 213a and the second coupling part 215 is the other second support part coupled thereto. At the rear end of the end portion of (213b), it protrudes in the longitudinal direction to a thickness corresponding to the depth of the groove of the first coupling part 217 and engages with the groove of the first coupling part 217 .

Accordingly, the second support parts 213a and 213b are connected to each other while the first coupling part 217 and the second coupling part 215 are engaged with each other and the ends of the first support part 211 are contacted and connected to each other, so that the second support part ( 213) is facilitated, and the coupling part of the second support part 213 is not exposed to the outside, but the coupling part of the first support part 211 exposed to the outside is connected without a step difference, so that the first support part 211 is not exposed to the outside. It is possible to reduce the appearance defect of the display device and to increase consumer satisfaction with the overall appearance of the display device.

And, as shown in FIG. 5 , the display panel 201 is seated on the front side of the second support part 213 extending inside the first support part 211 , and the back cover 203 is coupled to the back side.

In addition, a coupling member 204 is provided between the rear surface of the display panel 201 and the front surface of the second support part 213 , and also between the rear surface of the second support part 213 and the front surface of the back cover 203 . 206 is provided to fix the positions of the display panel 201, the second support part 213, and the back cover 203 and are coupled thereto.

Here, as the coupling members 204 and 206 , any adhesive material such as an adhesive pad, a double-sided tape, a resin, an adhesive, or a sealing member may be used.

Here, the sealing member may be a high-viscosity curable resin, wherein the curable resin may be an acrylic resin, an epoxy resin, a non-foaming urethane resin, etc., and may be cured by natural curing, UV curing, or heat.

In addition, as shown in FIG. 6 , the first coupling part 217 is provided as a cutout obtained by cutting the front and rear surfaces of either of the second supporting parts 213b, and the second coupling part 215 is the other second supporting part ( 213a) may protrude in the longitudinal direction from the end of the first coupling portion 217 to be engaged with the cutout of the first coupling portion 217 .

In this case, since the first coupling part 217 and the second coupling part 215 are formed with the same thickness of the second supporting parts 213a and 213b coupled to each other, manufacturing is facilitated and the change in the stiffness of the second supporting part 213 as a whole is reduced. This reduces deformation or damage during assembly or transportation.

One of the first coupling part 217 and the second coupling part 215 is provided with protrusions 215a and 217a extending along the rear surface of the second support 213, and the other protrusions 215a and 217a are provided. ) is provided with insertion parts 215b and 217b to be inserted, so that when the first coupling part 217 and the second coupling part 215 are coupled, the assembly is facilitated by maintaining the coupled state without being separated to either side. there is.

In addition, one or more of the protrusions 215a and 217a and the insertion portions 215b and 217b may be provided. It will be described by showing as an example that each of which is provided one by one and that the second coupling part 215 is also provided with one insertion part 215b and one protrusion part 215a corresponding thereto.

In addition, the protrusions (215a, 217a) and the insertion parts (215b, 217b) are coupled to each other in a curved and curved surface to be engaged with each other, preventing deformation due to collision during assembly or transportation, and coupling even when external physical force is applied after assembly Deformation of the affected area is minimized.

The engagement portion of the first coupling part 217 and the second coupling part 215 may be fixed by welding. It is possible to be combined while maintaining a uniform distance along the edge of 201 , thereby increasing consumer satisfaction with the appearance of the display device.

Here, the end center of the second coupling part 215 may be provided with a through hole 219 that penetrates from the front to the rear side. When welding the engagement portion of the first coupling portion 217 and the second coupling portion 215, a coupling defect due to thermal expansion is prevented.

That is, when laser welding is performed on the engagement portion between the first coupling part 217 and the second coupling part 215, the first coupling part 217 and the second coupling part 215 are thermally expanded due to a local temperature increase. As a result, a step defect in which the entire front and rear surfaces of the second support part 213 protrude and sink may occur.

In addition, such a step difference of the second support part 213 leads to an assembly failure of the display panel 201 seated on the front surface of the second support part 213 , so that the middle cabinet 210 and the display panel 201 are lifted. Damage to the display panel 201 in the portion where this occurs and protrudes may also increase.

Therefore, the through hole 219 formed in the center end portion of the second coupling part 215 absorbs this thermal expansion, so that the step defect due to thermal expansion of the first coupling part 217 and the second coupling part 215 and the middle Lifting of the cabinet 210 and the display panel 201 and damage to the display panel 201 are prevented.

In addition, the second support portion 213 may be provided with at least one slit (216a, 216b) cut to be connected to the engaging portion of the first coupling portion 217 and the second coupling portion 215, such a slit ( 7, the first slit 216b and the first coupling part 217 are connected to the upper end of the first coupling part 217 and disposed in the longitudinal direction of the second support part 213b. A second slit 216a connected to the lower end of the second support portion 213b may be provided in a corner direction from the center thereof.
In addition, as shown in FIG. 8 , the slits 216a and 216b are formed in the first coupling part 217 formed as a recessed groove, or the front and rear surfaces of the second support part 213 are cut off. One second slit 216a may be formed.

These slits 216a and 216b prevent step defects due to thermal expansion during welding at the engagement portion of the first coupling portion 217 and the second coupling portion 215 like the through-hole 219 described above, as well as the middle When the cabinet 210 is painted, it serves as a drainage function of the paint to prevent aggregation of the paint.

That is, the middle cabinet 210 may be formed of aluminum or aluminum alloy or stainless steel or galvanized steel sheet, as described above, and may be finally assembled with a color unique to the material of the middle cabinet 210 without a painting process. In order to satisfy the appearance, it can be painted in various colors through a separate painting process.

In the case of such a separate painting process, painting is performed by immersing the middle cabinet 210 in a water tank filled with paint and withdrawing it or spraying the paint directly on the middle cabinet 210. During the drying process of the paint, the first combination The slits 216a and 216b prevent the paint from solidifying in a state where the paint is agglomerated at the engagement portion between the portion 217 and the second coupling portion 215 .

That is, when the paint starts to harden during the drying process of the paint, the paint is agglomerated and hardened at the interlocking portion of the first coupling part 217 and the second coupling part 215, which is a region with a relatively rough surface area and empty space. As a result, as described above, along with a step defect of the second support part 213 , a lifting phenomenon of the middle cabinet 210 and the display panel 201 , and damage to the display panel 201 at the protruding portion may increase.

Therefore, during the drying process of the paint, the excess paint is discharged to the outside through the slits 216a and 216b cut to be connected to the engaging portion of the first coupling part 217 and the second coupling part 215, so that the paint is agglomerated. This will prevent it from solidifying.

And, the ends of the slits (216a, 216b) are formed in a curved surface to prevent the propagation of cracks at the ends of the slits (216a, 216b) while the middle cabinet 210 is twisted when a physical load is transmitted from the outside, or the slit ( At the ends of the slits 216a and 216b, an extension extending beyond the width of the slits 216a and 216b is provided to prevent further crack propagation.

Meanwhile, in the drawings of the embodiments of the present invention, only the case of a light emitting display panel is illustrated as an example, but as described above, the embodiments of the present invention are applicable even to a liquid crystal display panel, and in this case, light is provided to the liquid crystal display panel is composed of a light source module, a light guide plate that processes light emitted from the light source module to provide appropriate light to the liquid crystal panel, a light control member, and a light reflector, wherein the light source module converts electric energy into light energy It is an implementation of the present invention that a light emitting diode (LED) assembly, a Cold Cathode Fluorescent Lamp (CCFL), or a Hot Cathode Fluorescent Lamp (HCFL) may be used. Since it is a well-known technique in the technical field to which examples belong, a detailed description thereof will be omitted.

As described above, according to the embodiments of the present invention, it is possible to reduce the appearance defect by reducing the width of the bezel, which is the outer edge of the display panel, and eliminating the step difference between the middle cabinets connected along the edge of the display panel, thereby reducing the appearance of the display device. It has the effect of increasing consumer satisfaction with the appearance of the product, doubling the commercial value and increasing screen immersion.

In addition, according to the embodiments of the present invention, when the middle cabinet arranged along the edge of the display panel is connected and coupled, a step defect such as a surface protrusion of the coupling portion is prevented, and the display panel and the middle cabinet are lifted and caused by this. There is an effect of preventing the display panel from being damaged.

In the above, even though all the components constituting the embodiment of the present invention are described as being combined or operated in combination, the present invention is not necessarily limited to this embodiment. That is, within the scope of the object of the present invention, all the components may operate by selectively combining one or more.

In addition, terms such as "comprises", "comprises" or "have" described above mean that the corresponding component may be embedded, unless otherwise specified, excluding other components. Rather, it should be construed as being able to further include other components. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless otherwise defined. Terms commonly used, such as those defined in the dictionary, should be interpreted as being consistent with the meaning of the context of the related art, and are not interpreted in an ideal or excessively formal meaning unless explicitly defined in the present invention.

The above description is merely illustrative of the technical spirit of the present invention, and various modifications and variations will be possible without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

201: display panel 203: back cover
210: middle cabinet 211: first support
213: second support portion 215: second coupling portion
217: first coupling portion 215a, 217a: protrusion
215b, 217b: insertion portion 216a, 216b: slit
219: through hole

Claims (10)

display panel;
A first support part connected to each other by abutting the ends along the edge of the display panel, and a second support part extending from the inner surface of each of the first support parts so that the display panel is seated on the front surface are provided, and the ends are coupled to each other, a middle cabinet having a first coupling part provided on one side of the pair of second supporting parts coupled to each other and a second coupling part corresponding thereto on the other side being engaged with each other;
a back cover seated on a rear surface of the second support part of the middle cabinet;
includes,
The second support portion is provided with a slit cut to be connected to the engaging portion of the first coupling portion and the second coupling portion,
The engaging portion of the first coupling portion and the second coupling portion is fixed by welding,
The slit is a first slit connected to the upper end of the first coupling part and disposed in the longitudinal direction from the center of the second support part, and a first slit connected to the lower end of the first coupling part and disposed in the corner direction from the center of the second support part. A display device having two slits. The method of claim 1,
The first coupling part is provided as a recess recessed on the rear surface of the second support part, and the second coupling part protrudes in the longitudinal direction from the rear end surface of the second support part to engage and engage the groove. The method of claim 1,
The first coupling part is provided as a cutout obtained by cutting the front and back surfaces of the second support part, and the second coupling part protrudes from an end of the second support part in a longitudinal direction to engage and engage the cutout. 4. The method according to claim 2 or 3,
A display device having a protrusion protruding along a rear surface of the second support part at one of the first coupling part and the second coupling part, and an insertion part into which the protrusion part is inserted, in the other. 5. The method of claim 4,
The protrusion part and the insertion part are provided with a curved surface and are engaged with each other in a display device. delete The method of claim 1,
A display device having a through hole penetrating from the front to the rear at the center of the end of the second coupling part. delete The method of claim 1,
An end of the slit is provided with a curved surface. The method of claim 1,
A display device having an extension portion that is wider than a width of the slit at an end of the slit.

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