KR102411320B1 - Display device - Google Patents

Abstract

The present embodiments relate to a display device, and in the present embodiments, a support member is coupled to the rear surface of the display panel so that the circuit film and the printed circuit board connected to the display panel are supported to protect the plurality of circuit films and the printed circuit board. and to provide a display device capable of improving heat dissipation performance of a driving IC and the like.

Description

display device {DISPLAY DEVICE}

The present embodiments relate to a display device, and more particularly, in the display device, while stably supporting the circuit film and the printed circuit board, it is easy to attach and detach the printed circuit board during assembly, and a plurality of circuit films connected to the display panel; , It relates to a display device capable of protecting a printed circuit board, etc. and improving the heat dissipation performance of a driving IC and the like to prevent the screen's sounding phenomenon.

In general, as a flat panel display device, a liquid crystal display device, a plasma display device, a field emission display device, a light emitting display device, etc. Although it is being actively researched, liquid crystal display devices and light emitting display devices are in the spotlight because of the advantages of mass production technology, ease of driving means, and realization of high quality.

And, efforts to minimize or slim the thickness of the display device are steadily progressing. Referring to FIG. 1 in this regard, the conventional display device currently used is provided by the set plate 111 and the set sidewall 112 . A display unit 130 including a set cover 100 having a storage space, a guide frame 120 seated on the set cover 100 and accommodated in the storage space, and a display panel 131 seated on the guide frame 120 . , a circuit arrangement unit 150 provided between one side wall of the set side wall 112 parallel to one side of the guide frame 120 and one side of the guide frame 120, a circuit arrangement unit to be connected to the display panel 131 ( The plurality of circuit films 134 disposed on 150 , the printed circuit board 135 disposed on the circuit arrangement unit 150 to be connected to the plurality of circuit films 134 , the backlight unit 132 , and the circuit arrangement unit 150 . ) is configured to include a deco cover (Deco Cover, 140) to cover.

Here, the deco cover 140 is set to cover the space between one side wall of the set side wall 112 and one side of the guide frame 120 parallel to one side of the guide frame 120 , that is, the circuit arrangement unit 150 . By being coupled to one side wall of the side wall 112 and one side of the guide frame 120 , the printed circuit board 135 and the plurality of circuit films 134 are protected. To this end, the decorative cover 140 is configured to include a cover plate 410, a plurality of first and second coupling members (142, 143).

However, since such a display device has a structure in which the decoration cover 140 is coupled to cover the circuit arrangement unit 150 from the front side, the width of the front edge of the display device, particularly the width of the area where the circuit film 134 is located, is increased. Due to this, it is an obstacle to devise various and innovative designs required by consumers.

In particular, in recent years, the need for research to develop a display device capable of reducing the width of the bezel while protecting a circuit film, a printed circuit board, etc. embedded in the display device and improving heat dissipation performance is increasing.

Against this background, an object of the present embodiments is to provide a display device that facilitates attachment and detachment of the printed circuit board during assembly while stably supporting the circuit film and the printed circuit board in the display device.

Another object of the present embodiments is to protect a plurality of circuit films disposed in a circuit arrangement unit connected to the display panel while significantly reducing the width of the front edge in the display device, and a printed circuit board disposed in the circuit arrangement unit, etc. An object of the present invention is to provide a display device capable of preventing the screen from ringing by increasing the heat dissipation performance of a driving IC or the like.

In addition, the purpose of the present embodiments 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, in the present embodiments, the support member is coupled to the rear surface of the display panel so that the circuit film and the printed circuit board connected to the display panel are supported to protect and drive the plurality of circuit films and the printed circuit board. A display device capable of improving heat dissipation performance of an IC or the like is provided.

As described above, according to the present embodiments, there is an effect of facilitating attachment and detachment of the printed circuit board during assembly while stably supporting the circuit film and the printed circuit board in the display device.

In addition, according to the present embodiments, while significantly reducing the width of the front edge of the display device, the plurality of circuit films connected to the display panel, the printed circuit board, etc. are protected, and the heat dissipation performance of the driving IC is increased to improve the sound quality of the screen. There is an effect that can prevent the adverse phenomenon.

1 is a cross-sectional view for explaining a general display device;
2 is a rear view showing some of the display devices according to the present embodiments;
3 and 4 are perspective views showing some of the display devices according to the present embodiments;
5 is a perspective view showing some of the display devices according to the present embodiments;
6 is a cross-sectional view showing a section AA of FIG. 2;
7 is a cross-sectional view showing a section BB of FIG. 2 .

Hereinafter, some embodiments of the present embodiments 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 present embodiments, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present embodiments, the detailed description may be omitted.

Also, in describing the components of the present embodiments, 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 a rear view illustrating some of the display apparatuses according to the present exemplary embodiments, FIGS. 3 and 4 are perspective views illustrating some of the display apparatuses according to the present exemplary embodiments, and FIG. 5 is a display apparatus according to the present exemplary embodiments. A perspective view showing a part, FIG. 6 is a cross-sectional view showing a section A-A in FIG. 2 , and FIG. 7 is a cross-sectional view showing a section B-B in FIG. 2 .

As shown in these drawings, in the display device according to the present embodiments, the display panel 201, one side is connected to the display panel 201 and the other side is connected to the printed circuit board 211 and the printed circuit board 211 A plurality of circuit films 213 spaced apart from each other in both directions of the display panel 201 so as to be disposed on the rear surface of the display panel 201, the printed circuit board 211 is coupled to the rear surface of the display panel 201 so that the printed circuit board 211 is supported. It includes a support member 220 .

In the display device according to the present embodiments, the circuit film 213 and the printed circuit board 211 are coupled to the support member 220 and are disposed parallel to the rear surface of the display panel 201 to include the circuit film 213 and the printed circuit. While stably supporting the board 211 , it is easy to attach and detach the printed circuit board during assembly.

That is, as shown in FIG. 2 , the circuit film 213 is spaced apart from each other in both directions of the display panel 201 and provided with a plurality, one side of the circuit film 213 is electrically connected to the display panel 201 and The other side is electrically connected to the printed circuit board 211 .

In addition, the support member 220 coupled to the printed circuit board 211 to support the printed circuit board 211 is coupled in parallel to the rear surface of the display panel 201 at a position spaced apart from the end portion.

Here, the display panel 201 in the present embodiments may be a liquid crystal display panel or may be applied regardless of a light emitting display panel.

That is, when the display panel 201 is composed of a liquid crystal display panel, it further includes a backlight unit for irradiating light to the liquid crystal display panel, a lower polarizing plate attached to the lower substrate, and an upper polarizing plate attached to the front surface of the upper substrate A specific configuration of the lower substrate and the upper substrate may include a driving mode of the liquid crystal panel, for example, a twisted nematic (TN) mode, a vertical alignment (VA) mode, an in plane switching (IPS) mode, and a fringe (FFS) mode. field switching) mode, and the like, may be formed in various forms known in the art.

In addition, when the display panel 201 is configured as 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 supply (VDD) line, and a lower portion. It may be configured to include an upper substrate bonded to the substrate facing it.

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 a light emitting device (eg, OLED) that emits light by an electric current, and the upper substrate is configured to 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 a light emitting device connected to the driving transistor, and in this case, the light emitting device of the lower substrate may be omitted.

In the drawings in the present embodiments, the light emitting display panel 201 is shown as an example, and the backlight unit that emits light is not shown as a structure that emits light by itself. do it with

In the display panel 201 , an encapsulation member 201b is attached to the rear surface of the display panel 201 in order to prevent the pixel deterioration problem because organic compounds in the pixel array may deteriorate when exposed to moisture or oxygen. to seal the pixel array.

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

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

Here, the side seal member 201c may be made of a polymer material to which a black pigment is added, and the side seal member absorbs light emitted from the pixel array, so that the light emitted through the side surface of the display panel 201 is invisible. will not

In addition, a plurality of flexible circuit films 213 having a driving IC 215 mounted thereon are provided on the rear surface of at least one end of the display panel 201 formed in a rectangular shape, the display panel 201 and the printed circuit board 211 and the It is electrically connected and the printed circuit board 211 is disposed parallel to the rear surface of the display panel 201 .

Here, the plurality of flexible circuit films 213 are attached to the display panel 201 and the printed circuit board 211 by a tape automated bonding (TAB) process with a fixing member 201d such as resin, etc. Tape Carrier Package) or COF (Chip On Flexible Board or Chip On Film).

Accordingly, the display panel 201 is electrically connected or connected to the printed circuit board 211 through the plurality of flexible circuit films 213 , and the printed circuit board 211 includes the plurality of flexible circuit films 213 . is electrically connected to the display panel 201 to provide various signals for displaying an image.

The printed circuit board 211 is electrically connected to the plurality of circuit films 213 to provide various signals for displaying an image on the display panel 201 , and the printed circuit board 211 includes the display panel 201 . A control IC (not shown) or the like for controlling driving is mounted.

In addition, a back cover 230 is provided at the rear of the display panel 201 so that the circuit film 213 and the printed circuit board 211 are embedded therein. It is possible to protect the internal components such as the substrate 211 and the back surface of the display panel 201 .

As shown in FIGS. 3 to 6 , the support member 220 coupled to the display panel 201 has a front surface supported on the rear surface of the display panel 201 and a rear surface on which the printed circuit board 211 is mounted. Since the support part 221 is provided, it is possible to stably support the printed circuit board 211 while the support member 220 is supported by the display panel 201 .

The first support part 221 is formed in a flat surface so that the entire front surface is supported in close contact with the rear surface of the display panel 201 , and the entire rear surface of the first support part 221 is in close contact with the printed circuit board 211 , so that the display panel While supporting the 201 and the printed circuit board 211, heat transfer can be performed well.

Accordingly, the support member 220 may be formed of a metal material such as aluminum or an aluminum alloy so that heat transfer can be performed quickly while having a predetermined rigidity.

In addition, an adhesive member 205 is provided between the rear surface of the display panel 201 and the front surface of the first support part 221 to prevent the support member 220 from sliding and to firmly fix the position.

Here, the adhesive member 205 may be an adhesive insulating tape or an adhesive heat conductive tape formed of a stretchable material having a predetermined thickness, and at least one of them may be made of a thermal interface material (TIM).

In addition, one end of the support member 220 is bent at the end of the first support 221 so as to surround the end of the printed circuit board 211 and a coupling support 223 into which the end of the printed circuit board 211 is inserted. In this way, since the coupling support part 223 is provided at one end of the first support part 221, press-fit coupling is possible when the printed circuit board 211 is coupled, so that the coupling is facilitated and separation after coupling can be facilitated. have.

However, the present invention is not necessarily limited thereto, and although not shown in the drawings, when the printed circuit board 211 is coupled to the support member 220 , the adhesive member described above is disposed between the rear surface of the first support part 221 and the printed circuit board 211 . (205) can also be attached to combine.

In addition, the end of the coupling support 223 may be provided with a bending flange 225 that is bent obliquely in the direction of increasing the distance from the rear surface of the first support 221 . Because the flange 225 is provided, when the printed circuit board 211 is press-fitted, the end of the printed circuit board 211 slides along the bending flange 225 and can be easily coupled, and the It is possible to prevent the ends from being damaged by bumping.

In addition, the support member 220 is provided with a second support portion 222 that is branched from the other end of the first support portion 221 at a position corresponding to the circuit film 213 and disposed to be spaced apart from each other in both directions of the display panel 201 . In this way, the second support part 222 is provided at the other end of the support member 220 opposite to the coupling support part 223, so that when the support member 220 and the display panel 201 are coupled, the circuit film 213 is It is possible to combine the position of the second support part 222 according to the spacing arrangement, so that the coupling position of the support member 220 can be easily and accurately matched.

In addition, the support member 220 allows the driving IC 215 mounted on the circuit film 213 to be seated on the rear surface of the second support part 222 so that heat generated from the driving IC 215 is generated by the second support part 222 . can be dissipated through

That is, the driving IC 215 is brought into close contact with the entire rear surface of the second support part 222 , so that heat generated from the driving IC 215 is directly transferred through the second support part 222 , thereby dissipating heat.

The second support part 222 is bent so that the front surface is spaced apart from the rear surface of the display panel 201 in a stepwise difference from the first support part 221 , and the driving IC 215 is supported on the rear surface of the second support part 222 to make the first 2 The air layer 222a formed as an empty space between the support 222 and the display panel 201 is provided to prevent heat generated by the driving IC 215 from being transferred to the display panel 201 . .

The heat generated by the driving IC 215 is prevented from transferring heat due to the air layer 222a between the second support part 222 and the display panel 201, so that the display panel 201 is affected by the local temperature difference. It is possible to prevent the phenomenon, and it is possible to prevent the screen sounding phenomenon that may be caused by the physical pressing of the display panel 201 due to design or manufacturing tolerances.

In addition, a heat dissipation member 203 is provided between the rear surface of the second support 222 and the driving IC 215 to allow faster heat dissipation, wherein the heat dissipation member 203 is a stretchable material having a predetermined thickness. An adhesive insulating tape or an adhesive heat conductive tape formed of a may be used, and at least one of these may be made of a thermal interface material (TIM) or an insulating material such as a polyolefin resin.

In addition, the heat dissipation member 203 may have a structure in which a heat transfer filler is contained in a resin composition such as epoxy, wherein the heat transfer filler is graphite, aluminum (Al), copper (Cu), nickel (Ni), silver ( Ag) may be any one of metal particles such as.

In addition, a back cover 230 is provided at the rear of the display panel 201 so that the circuit film 213 , the printed circuit board 211 , and the support member 220 are embedded therein, and the driving IC is provided on the front side of the back cover 230 . The rear surface of the circuit film 213 on which the 215 is mounted is supported and heat dissipation may be made.

Accordingly, the back cover 230 directly absorbs the heat generated from the circuit film 213 in the driving IC 215 region to quickly dissipate heat to the outside, and the circuit film 213 in the driving IC 215 region By being supported by the back cover 230 , it is possible to prevent deformation and damage of the circuit film 213 .

And, as shown in FIG. 7 , an adhesive member 240 is provided between the display panel 201 and the back cover 230 to be coupled between the circuit films 213 spaced apart from each other.

Here, the back cover 230 may be formed of a metal material such as aluminum, an aluminum alloy, stainless steel, or an electro-galvanized steel sheet, and may be formed of a glass material to prevent thermal expansion and thermal deformation of the back cover 230 . have.

Meanwhile, in the drawings of the present embodiments, only the case of a light emitting display panel is illustrated as an example, but as described above, the present embodiments are applicable even to a liquid crystal display panel, and in this case, a backlight module providing light to the liquid crystal display panel , a light source module, and a light guide plate that processes the light emitted from the light source module to provide appropriate light to the liquid crystal panel, a light control member, and a light reflector, where the light source module is a component that converts electrical energy into light energy and emits light 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, a detailed description below will be omitted.

As described above, according to the present embodiments, there is an effect of facilitating attachment and detachment of the printed circuit board during assembly while stably supporting the circuit film and the printed circuit board in the display device.

In addition, according to the present embodiments, while significantly reducing the width of the front edge of the display device, the plurality of circuit films connected to the display panel, the printed circuit board, etc. are protected, and the heat dissipation performance of the driving IC is increased to improve the sound quality of the screen. There is an effect that can prevent the adverse phenomenon.

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 should not be 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: heat dissipation member
205: adhesive member 211: printed circuit board
213: circuit film 215: driving IC
220: support member 221: first support part
222: second support 223: coupling support
225: bending flange 230: back cover

Claims (10)

display panel;
a plurality of circuit films having one side connected to the display panel and the other side connected to the printed circuit board so that the printed circuit board is disposed on the rear surface of the display panel and spaced apart from each other in both directions of the display panel;
a support member coupled to a rear surface of the display panel to support the printed circuit board;
includes,
The support member is bent at the end of the first support so that the front side is supported on the rear surface of the display panel and the rear side is a first support part on which the printed circuit board is seated, and one end of the first support part surrounds the end of the printed circuit board. A display device having a coupling support portion into which an end of the printed circuit board is inserted, and a bending flange bent obliquely in a direction to increase a distance from a rear surface of the first support portion at an end of the coupling support portion. delete The method of claim 1,
An adhesive member is provided between the rear surface of the display panel and the front surface of the first support unit. delete delete The method of claim 1,
The support member is provided with a second support portion that is branched from the other end of the first support portion at a position corresponding to the circuit film and spaced apart from each other in both directions of the display panel. 7. The method of claim 6,
The support member is a display device in which the driving IC mounted on the circuit film is seated on the rear surface of the second support part. 8. The method of claim 7,
The display device in which the front surface of the second support part is bent to be stepped with the first support part so as to be spaced apart from the rear surface of the display panel, and the driving IC is supported on the rear surface of the second support part. 8. The method of claim 7,
A heat dissipation member is provided between the rear surface of the second support and the driving IC. 10. The method of claim 9,
A display device in which a back cover is provided at a rear side of the display panel so that the circuit film, the printed circuit board, and the supporting member are embedded therein, and the rear side of the circuit film on which the driving IC is mounted is supported on the front side of the back cover.

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