KR20180025328A - Display device - Google Patents

Abstract

The present invention relates to a display apparatus. The display apparatus according to embodiments of the present invention comprises a coating layer made of a hydrophobic substance or an oleophobic substance on an entire surface of a display panel, thereby preventing inflow of moisture from the outside while reducing bezel width of the display apparatus.

Description

Display device {DISPLAY DEVICE}

The present invention relates to a display device, and more particularly, to a narrow bezel type display device which reduces an area of a rim portion of an outer frame of a display device, and a display device that prevents moisture from being inflow from the outside.

In general, a flat panel display device includes a liquid crystal display device, a plasma display device, a field emission display device, and a light emitting display device. However, liquid crystal display devices and light emitting display devices are attracting attention due to the advantages of mass production technology, ease of driving means, and realization of high image quality.

1 is a cross-sectional view illustrating a conventional display device. As shown in FIG. 1, a conventional display device includes a display panel 105, a plurality of circuit films 111 electrically connected to the display panel 105, And a back cover 101 which surrounds the bending portion of the circuit film 111 from the end of the display panel 105 and on which the display panel 105 is seated.

The printed circuit board 113 is electrically connected to the plurality of circuit films 111 to provide various signals for displaying an image on the display panel 105. The printed circuit board 113 is provided with And a heat radiating pad 115 for emitting heat generated from the printed circuit board 113 is coupled to the inner surface of the back cover 101 And a heat radiating pad 119 for emitting heat is coupled to the lower end of the display panel 105 while maintaining an appropriate gap with the circuit film 111.

However, in such a conventional display device, the area of the bezel exposed on the front surface can be reduced. However, since water flows into the space between the end of the back cover and the end of the display panel, moisture flows into the circuit film and the printed circuit board, A short circuit is generated and an error occurs.

In particular, in the event of a short circuit or an error, the entire display panel must be replaced, which is costly and requires a long repair process. In order to satisfy the consumer's design needs, the width of the outer bezel is reduced, There is an increasing need for the development of a display device capable of preventing moisture inflow.

In view of the foregoing, it is an object of the embodiments of the present invention to provide a display device capable of reducing the width of a front edge of a display device having a small area or a large area, thereby achieving a slim and lightweight display device.

Another object of the present invention is to provide a display device having a small area or a large area, comprising: a plurality of circuit films arranged in a circuit part connected to a display panel to prevent inflow of moisture from the outside while greatly reducing a width of a front edge; And a display device capable of protecting a printed circuit board and the like disposed on the display panel.

Further, the objects of the embodiments are not limited thereto, and other objects not mentioned may be clearly understood by those skilled in the art from the following description.

In order to achieve the above-mentioned object, in one aspect, the present embodiments include a coating layer made of a hydrophobic material or an oleophobic material on the entire surface of the display panel, thereby reducing the width of the bezel of the display device, And a display device.

As described above, according to the embodiments, the width of the front edge of the display device having a small area or a large area can be greatly reduced, thereby achieving a slim and lightweight display.

According to the embodiments, a plurality of circuit films arranged in a circuit portion connected to the display panel, preventing a moisture inflow from the outside while greatly reducing the width of the front edge in a small-area or large-area display device, It is possible to protect the printed circuit board and the like disposed in the circuit arrangement portion and shorten the manufacturing process.

1 is a cross-sectional view showing a conventional display device,
2 to 7 are a front view showing a display device according to the present embodiments,
8 is a side view showing a state in which a first coating layer and a second coating layer are formed in a display device according to the present embodiments,
9 is a cross-sectional view showing a display device according to the present embodiments.

Hereinafter, the present invention will be described in detail with reference to exemplary drawings of the embodiments. In the drawings, like reference numerals are used to denote like elements throughout the drawings, even if they are shown on different drawings. In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In describing the components of the embodiments, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the components from other components, and the terms do not limit the nature, order, order, or number of the components. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, Quot; intervening "or that each component may be" connected, "" coupled, "or " connected" through other components.

FIG. 8 is a side view showing a state in which a first coating layer and a second coating layer are formed in a display device according to the present embodiment. FIG. Sectional view showing a display device according to embodiments.

Referring to FIGS. 2 to 7, the display device 200 according to the present exemplary embodiment includes at least a lower end portion of at least two side edges connected to a front side including upper and lower sides and both side edges, The first coating layer 210 includes a display panel 201 made of a hydrophobic substance or an oleophobic substance and a rear surface of the display panel 201 is seated on the edge of the display panel 201 And a back cover 230 seated on the rear surface of the middle cabinet 220.

As shown in FIGS. 2 to 7, the display device 200 according to the present embodiment is a Borderless type or Narrow Bezel type in which the width of the outer frame, that is, the width of the bezel is greatly reduced, Thereby preventing or discharging moisture that flows into the inside of the apparatus.

The display panel 201 in such embodiments can be applied to a liquid crystal display panel or a light emitting display panel.

That is, when the display panel is constituted by a liquid crystal display panel, it may further comprise a backlight unit for irradiating light to the liquid crystal display panel, a lower polarizer plate attached to the lower substrate, and an upper polarizer attached to the front surface of the upper substrate The specific configurations of the lower substrate and the upper substrate include a driving mode of a liquid crystal panel, for example, a twisted nematic (TN) mode, a vertical alignment (VA) mode, an in- Mode, and the like, may be formed in various forms known in the art.

When the display panel is constituted by a light emitting display panel, the light emitting display panel includes a lower substrate including a plurality of light emitting cells formed for each region defined by a gate line, a data line, and a power source (VDD) And an upper substrate joined together.

Each of the plurality of light emitting cells formed on the lower substrate includes 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, (E.g., OLED) that emits light by a current that flows through the upper substrate, and the upper substrate includes moisture or a moisture absorbent for protecting the light emitting element from oxygen in the air or the like.

In this case, the upper substrate may further include a light emitting element connected to the driving transistor. In this case, the light emitting element of the lower substrate may be omitted.

A display panel 201 is seated on a front surface of the middle cabinet 220. In the drawing, a light emitting display panel is shown as an example and a backlight unit for emitting light is not constituted by a structural panel that emits light itself, The display panel will be described with reference to FIG.

The organic compound in the pixel array of the light emitting display panel may be deteriorated by exposure to moisture or oxygen so that an encapsulation member 201b is bonded to the rear surface of the display panel 201 to prevent the pixel deterioration problem, The array can be sealed.

Here, the sealing member 201b may be a metal substrate or a glass substrate, and the polarizing film 201a may be adhered to the front surface of the display panel 201. [

A side seal member 201c may be provided on a side surface of the display panel 201 in order to prevent light from the pixel array from being emitted through the side surface and generating light leakage.

Here, the side seal member 201c can be made of a polymer material to which a black pigment is added, and the side seal member 201c absorbs light emitted from the pixel array and is discharged through the side surface of the display panel 201 The light becomes invisible.

A plurality of flexible circuit films 201d on which ICs are mounted are electrically connected to the display panel 201 and disposed in parallel with the display panel 201 on the rear surface of the lower end of the display panel 201, A printed circuit board (not shown) is provided.

The plurality of flexible circuit films 201d are attached to a pad portion (not shown) and a printed circuit board by a TAB (Tape Automated Bonding) process. The flexible circuit film 201d may be a tape carrier package (TCP) or a chip on flexible board Chip On Film).

Accordingly, the display panel 201 is electrically connected to or connected to a printed circuit board (not shown) through a plurality of flexible circuit films 201d, and the printed circuit board is electrically connected to a plurality of flexible circuit films 201d electrically And provides various signals for displaying an image on the display panel 201.

The middle cabinet 220 includes a first support portion 221 and a second support portion 223 vertically connected to each other. The first support portion 221 surrounds the side surface of the display panel 201, The display panel 201 is mounted on the front surface of the second support portion 223 and the back cover 230 is coupled to the rear surface of the second support portion 223.

The width of the bezel may be greatly reduced when the end of the first support part 221 is a bezel. However, there is a possibility that water may flow into the space between the first support part 221 and the end of the display panel 201, A first coating layer 210 made of a hydrophobic material or an oleophobic material is provided on the front surface of the display panel 201 so that the flexible circuit film 201d provided on the lower rear surface of the display panel 201 and the moisture So that it can be protected from influx.

9, a moisture-proof insulating member 201e (also referred to as "Tuffy" or "Tuffy") for protecting the IC and the circuit portion of the flexible circuit film 201d is formed on the side surface and the rear surface of the flexible circuit film 201d, When water flows into the space between the first support portion 221 and the end portion of the display panel 201, a narrow space between the first support portion 221 and the display panel 201, the second support portion 223, The space may generate a capillary phenomenon and may flow into the inside if the amount of moisture introduced from the outside is more than a certain amount.

The first coating layer 210 may be formed on the front surface of the display panel 201 so as to connect at least both edges of the display panel 201. The first coating layer 210 may be formed of a hydrophobic material or an oleophobic material, Thereby preventing moisture or oil from flowing into the lower end of the first casing 201.

Here, the hydrophobic substance and the oleophobic substance are selected from the group consisting of fluororesins (PTFE), polystyrene, polymethylmethacrylate (PMMA), benzocyclobuteneseries resin, siloxane series resin and silane A silane, an acrylic resin, and the like, and a transparent material is used due to the characteristics of the display device 200. [

It should be noted that, in the drawings of the present embodiments, the transparent first coating layer 210 and the second coating layer 215 are indicated as hatching regions for convenience of explanation.

The first coating layer 210 and the second coating layer 215 may be formed by a nozzle or a spray coating method or a screen printing method using a mask exposed only to a region to be coated on the front surface of the display panel 201. [ ), An ODF (one drop filing) method, or a dispenser method. In FIG. 8, the spray coating method is shown as an example.

8, a mask 245 having an area to be coated is formed on the front surface of the display panel 201, and the hydrophilic or lipophilic material is sprayed through the spray gun 240 while moving in the direction of the arrow, 1 coating layer 210 is formed.

The first coating layer 210 made of a hydrophobic substance or a lipophilic material is provided to connect at least one side edge of the lower edge of the display panel 201 to the front surface of the display panel 201 as shown in FIGS. Moisture or oil that flows into the display panel 201 is not moved to the lower side of the display panel 201 but is moved to both sides of the display panel 201.

Therefore, the flexible circuit film 201d provided on the lower rear surface of the display panel 201 and the circuit components such as the printed circuit board do not flow in the water, and flow down along both edges of the display panel 201, The short circuit of the circuit part 201 is prevented.

The first coating layer 210 may be formed such that the upward distance from the lower edge of the first coating layer 210 is higher than the center edge of the edge of the first coating layer 210. When the first coating layer 210 is inclined so as to become lower toward the edge, It is possible to guide the water flowing into the front surface of the body 201 to both sides without interfering with the downward flow of gravity.

In the case of FIG. 3 in which the first coating layer 210 is formed in a horizontal direction with the lower edge of the display panel 201, water is accumulated on the central portion of the display panel 201, so that the first coating layer 210 moves to both sides due to the pressure difference. In many cases, moisture may also be flowing down the first coating layer 210.

2, when the central portion of the first coating layer 210 is formed to be positioned at a high height, the water flowing in the front surface of the display panel 201 by the first coating layer 210 is guided to both side edges do.

The first coating layer 210 may be a straight line as shown in FIG. 3, or may be curved upward in the upward direction as shown in FIG. 4. On the contrary, the first coating layer 210 may be concave upward The water flows downward by gravity and collects in the concave part.

In order to prevent the moisture from flowing down along the surface of the first coating layer 210, the first coating layer 210 may be formed of a mixture of The straight line or the upper side is formed into a convex curve.

5, two or more first coating layers 210 may be provided on the front surface of the display panel 201. In this case, the first coating layers 210 may be spaced apart from each other in the vertical direction, Even if a large amount of water flows down, it can be guided to flow down to both sides along the first coating layer 210 spaced up and down.

That is, when the amount of water flowing into the front surface of the display panel 201 is large, for example, when a large amount of cleaning agent or water is continuously sprayed on the entire surface of the display panel 201, It can be guided to flow down along the first coating layer 210 disposed on the lower side even though the first coating layer 210 disposed on the upper side passes through.

When two or more first coating layers 210 are vertically spaced from each other, a second coating layer 215 composed of a hydrophilic or lipophilic material is formed between the first coating layers 210 as shown in FIGS. 6 and 7 If the second coating layer 215 is provided between the first coating layers 210, even if there is a large amount of water flowing into the front surface of the display panel 201, the second coating layer 215 can be guided to flow on both side edges.

That is, even if a part of the water flows downward along the surface of the first coating layer 210 due to a large amount of water flowing down, moisture is spread along the surface of the second coating layer 215 region formed of a hydrophilic material, And then flows down to the first coating layer 210 in a state in which the volume and weight of the water is reduced. After that, the first coating layer 210 also causes both side edges to flow down.

The second coating layer 215 may be spaced apart from the first coating layer 210 on the upper and lower sides as shown in FIG. 6, and may be coated on the entire upper and lower first coating layers 210 as shown in FIG. .

6, when the second coating layer 215 is spaced apart from the first coating layer 210 on the upper and lower sides, since the region where the water is collected and the region where the water is spread are separated from each other, The amount of moisture flowing into any one region of the second coating layer 215 is reduced because the second coating layer 215 flows into the second coating layer 215 while the path for flowing or falling down in the region where moisture is not coated is flowed downward along the surface.

7, when the second coating layer 215 is coated on the entire upper and lower first coating layers 210, the water flowing downward along the surface of the first coating layer 210 is separated from the first coating layer 210, The second coating layer 215 is wider than the first coating layer 210, so that the amount of water flowing downward is minimized even if the amount of water flowing down is large.

9, in order that the moisture guided by the two side edges due to the first coating layer 210 and the second coating layer 215 may be discharged to the outside without flowing into the lower rear surface of the display panel 201, As shown in the drawing, the middle cabinet 220 is provided with a filling groove 225 and a discharge hole 227 for collecting moisture at both side edges of the lower edge.

That is, the middle cabinet 220 includes a first support portion 221 that surrounds the rim of the display panel 201, and a second support portion 221 that extends inward from the inner surface of the first support portion 221, The second support portion 223 is provided.

The connection part between the first support part 221 and the second support part 223 is provided with a charge groove 225 formed to be recessed along the connection part. So that it can be reserved.

A drain hole 227 is formed at the connection portion between the first support portion 221 and the second support portion 223 of the middle cabinet 220 so as to penetrate the front and rear surfaces of the second support portion 223, The inflowing water can be discharged to the outside of the display device through the drain hole 227 without staying inside.

The drain hole 227 can be connected to the fill groove 225 to penetrate the bottom surface of the fill groove 225 and can be easily discharged to the outside by the pressure of the water reserved in the fill groove 225.

The flexible circuit film 201d and the flexible circuit film 201d provided on the rear surface of the display panel 201 are provided with the filling grooves 225 and the drain holes 227 at one side or both side edges of the lower middle cabinet 220, It is possible to prevent short circuit of the printed circuit board or the like.

Such a middle cabinet 220 may be formed of synthetic resin or metal such as plastic in consideration of moldability and material cost, but may be made of aluminum, aluminum alloy, stainless steel or galvanized steel sheet in consideration of predetermined strength and heat radiation. .

As described above, according to the embodiments, the width of the front edge of the display device having a small area or a large area can be greatly reduced, thereby achieving a slim and lightweight display.

According to the embodiments, a plurality of circuit films arranged in a circuit portion connected to the display panel, preventing a moisture inflow from the outside while greatly reducing the width of the front edge in a small-area or large-area display device, It is possible to protect the printed circuit board and the like arranged on the circuit part.

As described above, all the constituent elements constituting the embodiments are described as being combined or combined into one, so that the embodiments are not necessarily limited to these embodiments. That is, within the scope of the embodiments of the present invention, all of the elements may be selectively coupled to one or more of them.

It is also to be understood that the terms such as " comprises, "" comprising," or "having ", as used herein, mean that a component can be implanted unless specifically stated to the contrary. But should be construed as including other elements. All terms including technical or scientific terms have the same meaning as commonly understood by those of ordinary skill in the art to which the embodiments belong, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless explicitly defined in the embodiments.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. will be. Therefore, the disclosed embodiments are intended to illustrate and not limit the technical idea of the embodiments, and the scope of the technical idea of the embodiments is not limited by the disclosed embodiments. The scope of protection of the embodiments should be construed according to the following claims, and all technical ideas within the scope of equivalents should be interpreted as being included in the scope of the embodiments.

200: display device 201: display panel
210: first coating layer 215: second coating layer
220: Middle cabinet 221: First support
223: second support part 225: filling groove
227: drain hole

Claims (10)

And a first coating layer that connects at least one side of a lower end of both side edges to the front surface, wherein the first coating layer comprises a hydrophobic material or an oleophobic material;
A middle cabinet on which a rear surface of the display panel is seated and disposed at an edge of the display panel;
A back cover seated on a rear surface of the middle cabinet;
. The method according to claim 1,
Wherein the first coating layer is a straight line. The method according to claim 1,
Wherein the first coating layer is positioned such that an upward distance from a lower edge of the first coating layer is higher than a center edge of the first edge of the first coating layer. The method of claim 3,
Wherein the first coating layer is curved upward in an upward direction. The method of claim 3,
Wherein the first coating layer comprises two or more coating layers, and the first coating layers are spaced apart from each other in the vertical direction. 6. The method of claim 5,
And a second coating layer made of a hydrophilic substance or a lipophilic substance is provided between the first coating layer. The method according to claim 6,
Wherein the second coating layer is spaced apart from the upper coating layer and the lower coating layer. The method according to claim 6,
Wherein the second coating layer is entirely coated between the upper and lower first coating layers. The method according to claim 1,
The middle cabinet includes a first support portion surrounding the rim of the display panel and a second support portion extending inward from the inner surface of the first support portion and having a rear surface of the display panel mounted on the front surface thereof, And a filling groove is provided at a connecting portion of the second supporting portion. 10. The method of claim 9,
Wherein the middle cabinet is provided with a drain hole penetrating a front portion and a rear surface of the second support portion at a connection portion between the first support portion and the second support portion.

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