KR20210030662A - Display device - Google Patents

Abstract

According to an aspect of the present invention, a display device includes: a display panel; a front cover configured to cover at least a lower portion of the display panel from a front side of the display panel; a module cover located at a rear of the display panel and coupled to the front cover; and a back cover positioned at the rear of the module cover and coupled to the module cover. The back cover may include a first latch formed to protrude toward the front cover from a front end, and the front cover may be configured to include a second latch to which the first latch is inserted and coupled. According to the present invention, the back cover is easily detachable from the display device.

Description

Display device {DISPLAY DEVICE}

The present invention relates to a display device. More specifically, it relates to a display device configured to easily fasten a back cover to a display device without using a fastening means such as a screw.

As the information society develops, the demand for display devices is also increasing in various forms. The display may be implemented using a method such as a Liquid Crystal Display Device (LCD), a Plasma Display Panel (PDP), an Electro luminescent Display (ELD), a Vacuum Fluorescent Display (VFD), or an Organic Light Emitting Diode (OLED).

Recently, many studies have been conducted on a display device having a thin thickness. In addition, many studies have been conducted on a display device in which the back cover can be easily attached and detached from the module cover.

It is an object of the present invention to solve the above and other problems.

An object of the present invention is to easily attach and detach a back cover from a display device.

A display device according to an aspect of the present invention for achieving the above object includes: a display panel, a front cover configured to surround at least under the display panel from the front of the display panel, and located at the rear of the display panel and the front A module cover coupled to a cover, a back cover positioned behind the module cover and coupled to the module cover, the back cover including a first latch protruding from a front end toward the front cover, and the front cover It may be configured to include a second latch to which the first latch is inserted and coupled.

The first latch may include an extension portion protruding from the front end of the back cover toward the front cover, and a protrusion formed at an end of the extension portion.

The second latch may include a supporter forming a space into which the first latch is inserted outside the body, and a bent portion bent inward from an end of the supporter.

The first latch may be formed in a plurality along one direction, and the second latch may be formed on the entire lower side along the one direction.

The back cover may include protrusions protruding from both ends, and the module cover may include a recessed portion in which the protrusion is seated.

The protrusion may include a bent portion bent in accordance with an inclined surface of the recessed portion and a third latch formed at an end of the bent portion.

The depression may further include a groove into which the third latch is inserted and coupled.

The back cover may include a bottom cover surrounding a lower side of the display panel and a rear cover installed to cover the rear side of the module cover, and the first and third latches may be formed on the bottom cover.

The effect of the display device according to the present invention will be described as follows.

In an embodiment of the present invention, since the back cover is configured to include a plurality of latches, it can be easily coupled to the panel assembly without screwing, and the rear cover can be stably coupled by screwing thereon.

1 is a diagram illustrating a schematic configuration of a display device according to an embodiment of the present invention, exploded in units of modules.
2 is a view showing that the back cover is divided into a plurality of configurations.
3 and 4 are diagrams for describing a backlight unit.
5 is an exploded view showing the panel assembly and the back cover
6 is a view showing a state in which the bottom cover is assembled to the panel assembly with the rear cover removed.
7 is a view showing the overall appearance of the bottom cover.
FIG. 8 is a diagram illustrating a cross section taken along line A-A' of FIG. 6.
FIG. 9 is a view showing a cross section taken along line B-B' of FIG. 6.

Hereinafter, exemplary embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, but identical or similar elements are denoted by the same reference numerals regardless of reference numerals, and redundant descriptions thereof will be omitted. The suffixes "module" and "unit" for constituent elements used in the following description are given or used interchangeably in consideration of only the ease of preparation of the specification, and do not have meanings or roles that are distinguished from each other by themselves. In addition, in describing the embodiments disclosed in the present specification, when it is determined that a detailed description of related known technologies may obscure the subject matter of the embodiments disclosed in the present specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are for easy understanding of the embodiments disclosed in the present specification, and the technical idea disclosed in the present specification is not limited by the accompanying drawings, and all changes included in the spirit and scope of the present invention , It should be understood to include equivalents or substitutes.

In addition, in the drawings, for a simplified illustration according to selection, the configuration of each part may be expressed slightly differently according to the drawings, but the same configurations are indicated when the drawings are the same number.

Hereinafter, an organic display panel (Organic Light Emitting Display, OLED) will be described as an example of the display panel, but the display panel applicable to the present invention is not limited to a liquid crystal panel, and a liquid crystal panel (Liquid Crystal Display Device) is described below. , LCD), a plasma display panel (PDP), a field emission display panel (Field Emission Display, FED), such as a display configured to be bent among flat panel displays may also be used.

1 is a diagram illustrating a schematic configuration of a display device according to an embodiment of the present invention, exploded in units of modules.

Referring to FIG. 1A, the display apparatus 100 according to an exemplary embodiment may be configured to include a display panel 110, a module cover 130, and a back cover 150.

The display panel 110 is provided on the front surface of the display device 100 and may function as a display for displaying an image. The display panel 110 may display an image by outputting red, green, or blue (RGB) per pixel according to a timing of a plurality of pixels. The display panel 110 may be divided into an active area in which an image is displayed and a de-active area in which an image is not displayed.

The display panel 110 may include an organic display panel (Organic Light Emitting Diode, hereinafter'OLED'). As an example OLED is a self-luminous device, since a backlight unit is not required, the thickness of the display device can be effectively reduced.

The module cover 130 may be located behind the display panel 110 and may be coupled to the display panel 110 to mechanically support the display panel 110. The module cover 130 may provide rigidity to the display panel 110 to support components constituting the device.

The back cover 150 may be located at the rear of the module cover 130, and the module cover 130 may be coupled to be detachable.

Referring to (b) of FIG. 1, the display device 100 according to an embodiment includes a front cover 105, a display panel 110, a backlight unit 120, a module cover 130, and a back cover 150. Can be configured to

The front cover 105 may be configured to cover at least a portion of an edge portion and a side surface of the front surface of the display panel 110. The front cover 105 includes a front side cover positioned at a partial edge of the front side of the display panel 110 and a lateral side cover positioned at the side of the display panel 110. Separately configured, or depending on the selection, the front cover and the side cover may be configured as one, or one of the two may be omitted.

The display panel 110 is provided on the front side of the display apparatus 100 and displays an image, and may be located behind the front cover 105.

In one example, the display panel 110 may be a liquid crystal display panel configured to include a rear substrate disposed to face a front substrate and a liquid crystal layer disposed therebetween. The front substrate may be configured to include color filters implementing red (R), green (G), and blue (B) sub-pixels. The rear substrate may include switching elements. The rear substrate can switch the pixel electrode. For example, the pixel electrode may change the molecular arrangement of the liquid crystal layer according to a control signal applied from the outside. The liquid crystal layer may include liquid crystal molecules. The arrangement of liquid crystal molecules may be changed according to a voltage difference generated between the pixel electrode and the common electrode. The liquid crystal layer may transmit or block light provided from the backlight unit 120 to the front substrate.

The backlight unit 120 may be positioned behind the display panel 110 to supply light to the front side. The backlight unit 120 may include light sources. The backlight unit 120 may be coupled to the frame 130 in front of the frame 130.

The backlight unit 120 may be driven by a full driving method or a partial driving method such as local dimming or impulsive. The backlight unit 120 may include an optical sheet 125 and an optical assembly 123.

The optical sheet 125 may allow light from a light source to be evenly transmitted to the display panel 110. The optical sheet 125 may be composed of layers. For example, the optical sheet 125 may include a prism sheet, a diffusion sheet, or the like.

The optical sheet 125 may be provided with a hook portion 125d. The hook portion 125d may be coupled to the front cover 105, the frame 130 and/or the back cover 150. Alternatively, the hook portion 125d may be fastened to a structure formed or coupled to the front cover 105, the frame 130 and/or the back cover 150.

The optical assembly 123 may be located behind the optical sheet 125. The optical assembly 123 may provide light to the optical sheet 125. The optical assembly 123 may include a light source that generates light.

The module cover 130 may support components of the display device 100. For example, the module cover 130 may support the backlight unit 120. The module cover 130 may be made of a metal material such as an aluminum alloy.

The back cover 150 may be located at the rear or rear of the display device 100. The back cover 150 may be coupled to the frame 130 and/or the front cover 105. For example, the back cover 150 may be an injection product made of a resin material.

Meanwhile, the back cover 150 may be configured as one body as illustrated in FIG. 1, or may be divided into at least two parts as illustrated in FIG. 2.

Referring to FIG. 2, the back cover 150 of an example may be configured to include a bottom cover 151 and a rear back cover 1522.

The first back cover 151 may be installed to surround the bottom surface of the panel assembly PA. In a preferred form, the bottom cover 151 may be fastened to be detachably attached to the panel assembly PA through a latch configuration without a fastening means, for example, a bolt-nut.

The rear cover 153 may be installed to cover the entire rear of the panel assembly PA. In one example, the second back cover 153 may be firmly fastened to the panel assembly PA by bolts.

Here, the panel assembly PA is assembled with the display panel 11 and the module cover 13, or the front cover 105, the display panel 110, the backlight unit 120, the module cover 130, and It refers to an integrally assembled configuration.

Meanwhile, in FIG. 2, it is described that the back cover 150 is divided into two parts, but is not limited thereto, and may be configured as a plurality of two or more or one body as necessary.

Hereinafter, a backlight unit will be described with reference to FIG. 3.

Referring to FIG. 3, the backlight unit 120 includes a light source unit 123 including a substrate 122, at least one optical assembly 124, a reflective sheet 126 and a diffusion plate 129, and a light source unit 123. It may include an optical sheet 125 located in front of the. The configuration of the backlight unit 120 is not limited thereto, and any one or more of them may be omitted.

The substrate 122 may be configured in the form of a plurality of straps extending in a first direction and spaced apart by a predetermined distance in a second direction orthogonal to the first direction.

At least one optical assembly 124 may be mounted on the substrate 122. An electrode pattern for connecting the adapter and the optical assembly 124 may be formed on the substrate 122. For example, the electrode pattern may be a carbon nano tube (CNT) electrode pattern.

The substrate 122 may be made of at least one of polyethylene terephthalate (PET), glass, polycarbonate (PC), and silicon. The substrate 122 may be a printed circuit board (PCB).

The optical assembly 124 may be disposed on the substrate 122 with a predetermined distance in the first direction. The diameter of the optical assembly 124 may be larger than the width of the substrate 122. That is, the diameter of the optical assembly 124 may be larger than the length of the substrate 122 in the second direction.

The light assembly 124 may be a light emitting diode (LED) chip or a light emitting diode package including at least one light emitting diode chip.

The light assembly 124 may be composed of a colored LED or a white LED that emits at least one color among colors such as red, blue, and green. The colored LED may include at least one of a red LED, a blue LED, and a green LED.

A light source included in the light assembly 124 may be a chip on board (COB) type. The COB type may be a form in which an LED chip, which is a light source, is directly coupled to the substrate 122. This can simplify the manufacturing process. In addition, it is possible to lower the resistance, thereby reducing the energy lost as heat. That is, it means that the power efficiency of the optical assembly 124 can be increased. The COB type can provide brighter lighting. The COB type can provide a thinner thickness and lighter weight than the conventional one.

The reflective sheet 126 may be positioned on the front surface of the substrate 122. The reflective sheet 126 may have a through hole 235, and the optical assembly may be inserted into the through hole 235.

The reflective sheet 126 may reflect light provided from the optical assembly 124 forward. In addition, the reflective sheet 126 may reflect light reflected from the diffuser plate 129 toward the diffuser plate 129 again.

The reflective sheet 126 may include at least one of a reflective material, a metal and a metal oxide. For example, the reflective sheet 126 may include a metal and/or a metal oxide having a high reflectivity such as at least one of aluminum (Al), silver (Ag), gold (Au), and titanium dioxide (TiO2). I can.

The reflective sheet 126 may be formed by depositing and/or coating a metal or metal oxide on the substrate 122. Ink including a metallic material may be printed on the reflective sheet 126. A vapor deposition layer using a vacuum deposition method such as a thermal evaporation method, an evaporation method, or a sputtering method may be formed on the reflective sheet 126. A coating layer and/or a printing layer using a printing method, a gravure coating method, or a silk screen method may be formed on the reflective sheet 126.

An air gap may be positioned between the reflective sheet 126 and the diffusion plate 129. The air gap may serve as a buffer through which light emitted from the optical assembly 124 can be widely spread. In order to maintain the air gap, a supporter 200 may be positioned between the reflective sheet 126 and the diffusion plate 129.

Resin may be deposited on the optical assembly 124 and/or the reflective sheet 126. The resin may diffuse light emitted from the optical assembly 124. The diffusion plate 129 may diffuse light emitted from the optical assembly 124 upward.

The optical sheet 125 may be positioned in front of the diffusion plate 129. The rear surface of the optical sheet 125 may face the diffusion plate 129, and the front surface of the optical sheet 125 may face the rear surface of the display panel 110.

The optical sheet 125 may include at least one or more sheets. Specifically, the optical sheet 125 may include one or more prism sheets and/or one or more diffusion sheets. A plurality of sheets included in the optical sheet 125 may be adhered and/or adhered to each other.

The optical sheet 125 may be composed of a plurality of sheets having different functions. For example, the optical sheet 125 may include first to third optical sheets 125a to 125c. The first optical sheet 125a may function as a diffusion sheet, and the second and third optical sheets 125b and 125c may function as a prism sheet. The number and/or position of the diffusion sheet and the prism sheet may be changed.

The diffusion sheet can prevent the light emitted from the diffusion plate from being partially concentrated, thereby making the distribution of light more uniform. The prism sheet may collect light emitted from the diffusion sheet so that the light is vertically incident on the display panel 110.

The hook portion 125d may be formed on at least one of a side or an edge of the optical sheet 125. The hook portion 125d may be formed on at least one of the first to third optical sheets 125a to 125c.

The hook portion 125d may be formed on the long side or edge of the optical sheet 125. The hook portion 125d formed on the first long side and the hook portion 125d formed on the second long side may be asymmetric. For example, it means that the positions and/or the number of the hook portions 125d of the first long side and the hook portions 125d of the second long side may be different from each other.

4, a plurality of straps extending on the frame 130 in a first direction (the x-axis direction in the drawing) and spaced apart by a predetermined distance in a second direction (z-axis in the drawing) perpendicular to the first direction A substrate 122 composed of may be provided. One side of the plurality of substrates 122 may be connected to the wiring electrode 232.

The wiring electrode 232 may extend in the second direction. The wiring electrode 232 may be connected to one side of the substrate 122 at regular intervals in the second direction.

A wiring hole 234 may be formed at one end of the wiring electrode 232. The wiring hole 234 may be a fine hole penetrating the frame 130. The wiring electrode 232 may extend to the rear surface of the frame 130 through the wiring hole 234. Through the wiring hole 234, the wiring electrode 232 may be electrically connected to an adapter (not shown) located at the rear of the frame 130.

The optical assembly 124 may be mounted on the substrate 122 with a predetermined distance in the first direction. The diameter of the optical assembly 124 may be larger than the width of the substrate 122 in the second direction.

5 is an exploded view showing the panel assembly PA and the back cover. In FIG. 5, it will be described as an example that the back cover 150 is configured to include a bottom cover 151 and a rear cover 153.

In FIG. 5, based on the panel assembly PA, the bottom cover 151 is fastened to the panel assembly PA so as to surround the lower portion of the panel assembly PA. In addition, the rear cover 153 is fastened to the panel assembly PA to cover the entire rear surface of the panel assembly PA.

In one example, the bottom cover 151 may be configured to be simply assembled to the panel assembly PA using a coupling member such as a latch. To this end, the bottom cover 151 may be configured to include a plurality of latches in an example.

In one preferred form, the bottom cover 151 may be configured to include a first portion () and a second portion (). Here, the first portion 151a may be a portion corresponding to the lower rear surface of the panel assembly PA, and the second portion 151b may be a portion corresponding to the bottom surface of the panel assembly PA.

On the other hand, when the bottom cover 151 is configured to include a latch as described above, the number of working hours can be reduced compared to the case of screw-fastening, thereby reducing manufacturing cost.

Conversely, in an example, the rear cover 153 may be assembled using a fastening means such as a screw so as to be firmly assembled to the panel assembly PA.

When the rear cover 153 is screw-fastened to the panel assembly PA, the bottom cover 151 is first coupled to the panel assembly PA using a latch. Further, the rear cover 153 is disposed so as to be superimposed on the first portion 151a of the bottom cover 151, and more precisely, the coupling force of the bottom cover 151 can be increased by screwing in the state.

6 is a view showing the bottom cover 151 assembled to the panel assembly PA with the rear cover 153 removed, and FIG. 7 is a view showing the overall view of the bottom cover 151, and FIG. 8 is 6 is a cross-sectional view taken along line A-A', and FIG. 9 is a cross-sectional view taken along line B-B' of FIG.

Referring to these drawings, the bottom cover 151 may be configured to include both ends in the first direction (in the x-axis direction in FIG. 5), and more precisely, protrusions 151a formed partially protruding from the first part 151a. have. The protrusion 151a may be formed to protrude in the second direction (y-axis direction of FIG. 5 ). The protrusion 151a has a function of guiding a position where the bottom cover 151 is coupled when the bottom cover 151 is coupled to the lower portion of the panel assembly PA.

In order to facilitate fastening, the panel assembly PA, more precisely, the module cover 130 may be configured to further include a depression 131 in which the protrusion 151a is accommodated to correspond to the location where the protrusion 151a is located. have. The depression 131 may be configured as an inwardly concave groove having a stepped inclined surface.

The recessed portion 131 is formed at a position corresponding to the protruding portion 151a, and may preferably be formed at the corners of both ends of the module cover 130.

Meanwhile, the bottom cover 151 includes a first latch 1511 protruding from the front end 151E toward the panel assembly PA. The first latch 1511 has a function of allowing the bottom cover 151 to be fastened to the panel assembly PA without screws.

The first latch 1511 is configured to include an extended portion 1511a protruding from the tip 151E and a protrusion 1511b formed at the end of the extended portion 1511a. The first latch 1511 may be formed as one long along the tip 1511 or may be formed in a plurality along the tip 1511.

In addition, the panel assembly PA may be configured to include a second latch 1051 to which the first latch 1511 is inserted and fastened. Preferably, the second latch 1051 may be formed under the front cover 105.

As illustrated in FIG. 8, the second latch 1051 includes a supporter 1051b forming a space into which the first latch 1511 is inserted outside the body 1051a forming the front cover 105, and the It may be configured to include a bending portion 1051c bent inward at the end of the supporter 1051b. Here, the term "outside the body" refers to a direction toward the outside of the display paper device.

When the bottom cover 151 is fastened to the panel assembly PA, the first latch 1511 provided at the front end of the bottom cover 151 is guided along the body 1051a of the bottom cover 151 to provide a second latch. It can be easily fastened with (1051). At this time, since the first latch 1511 includes a protrusion 1511b and the second latch 1051 includes a bent portion 1051c, the protrusion when the first latch 1511 is accommodated in the second latch 1051 Since the 1511b and the bent portion 1051c are engaged, the bottom cover 151 can be fastened to the panel assembly PA without screws.

In addition, the bottom cover 151 may be configured to further include a third latch 155. In a preferred form, the third latch 155 may be formed on the protrusion 151a.

In this case, the protrusion 151a may be configured to include a bent portion 151a1 inclined to match the inclined surface 131a of the depression 131 and a third latch 155 formed at the end of the bent portion.

In addition, the depression 131 may further include a groove 201 into which the third latch 155 is inserted and coupled. Here, the groove 201 may be formed as a hole formed in a region corresponding to the third latch 155.

When the third latch 155 is formed on the protrusion 151a as described above, it is easy to fasten the third latch 155 to the groove 201. As described above, the protruding boom 151a is a configuration for guiding the correct position of the bottom cover 151, and can be easily fastened since it is mated to the recessed portion 131. Therefore, by disposing the third latch 155 and the groove 201 in each of the protruding portion 151a and the recessed portion 131, the two can be easily coupled.

As described above, in one embodiment of the present invention, by configuring the bottom cover 151 to include a plurality of latches, it can be easily coupled to the panel assembly PA without screwing, and the rear cover 153 is disposed above it. It can be stably coupled by screwing.

Meanwhile, in the above-described embodiment, it has been described that the back cover is composed of a bottom cover and a rear cover, and the bottom cover includes a plurality of latches, but this description corresponds to one embodiment only, and one It goes without saying that it can be configured in the same way in the back cover composed of the body.

It is apparent to those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit and essential features of the present invention.

Certain or other embodiments of the present invention described above are not mutually exclusive or distinct from each other. Certain or other embodiments of the present invention described above may have their respective configurations or functions used in combination or combination.

The above detailed description should not be construed as restrictive in all respects, but should be considered as illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention.

The embodiments of the present invention described above are not exclusive or distinct from each other. In the above-described embodiments of the present invention, each configuration or function may be used or combined.

For example, it means that a configuration A described in a specific embodiment and/or a drawing may be combined with a configuration B described in another embodiment and/or a drawing. That is, even if the combination between the components is not directly described, the combination is possible except for the case where the combination is described as impossible.

The above detailed description should not be construed as limiting in all respects and should be considered as illustrative. The scope of the present invention should be determined by rational interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention.

Claims (8)

Display panel;
A front cover configured to surround at least under the display panel in front of the display panel;
A module cover located behind the display panel and coupled to the front cover;
A back cover positioned behind the module cover and coupled to the module cover;
Including,
The back cover includes a first latch protruding from the front end toward the front cover,
The front cover includes a second latch to which the first latch is inserted and coupled. The method of claim 1,
The first latch,
An extension portion protruding from the front end of the back cover toward the front cover, and a protrusion formed at an end of the extension portion,
Display device comprising a. The method of claim 2,
The second latch,
A supporter forming a space into which the first latch is inserted outside the body,
A bending portion bent inward from the end of the supporter,
Display device comprising a. The method of claim 3,
The first latch is composed of a plurality along one direction,
The second latch is formed on the entire lower side along the one direction. The method of claim 1,
The back cover includes protrusions protruding from both ends,
The module cover includes a recessed portion in which the protruding portion is seated. The method of claim 5,
The protrusion,
A bent part that is bent in accordance with the slope of the depression,
A third latch formed at the end of the bent portion,
Display device comprising a. The method of claim 6,
The display device further includes a groove in which the third latch is inserted and coupled to the recessed portion. The method according to any one of claims 1 to 7,
The back cover
A bottom cover surrounding the lower side of the display panel,
Including a rear cover installed to cover the rear of the module cover,
The first latch and the third latch are formed on the bottom cover.

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