KR102214353B1 - Display Device - Google Patents

Abstract

The present invention relates to a display device including a display panel, a cover bottom, a flexible circuit board, a first adhesive member, a printed circuit board, and a driver. The display panel displays an image. The cover bottom accommodates the display panel. As the flexible circuit board has one end attached to the pad area of the display panel and has at least two bending parts, the flexible circuit board is bent toward the rear surface of the cover bottom. The first adhesive member is located between the rear surface of the cover bottom and the rear surface of the flexible circuit board, and attaches and fixes the flexible circuit board to the cover bottom. The printed circuit board is attached to the other end of the flexible circuit board. The driver is mounted on one surface of the flexible circuit board facing the upper surface of the printed circuit board.

Description

Display Device

The present invention relates to a display device.

As information technology develops, the market for display devices, which is a connection medium between users and information, is growing. Accordingly, the use of display devices such as a liquid crystal display (LCD), an organic light emitting diode display (OLED), and a plasma display panel (PDP) is increasing.

Some of the above-described display devices, for example, a liquid crystal display device or an organic light emitting display device, include a display panel including a plurality of sub-pixels arranged in a matrix form and a driver driving the display panel. The driver includes a scan driver that supplies a scan signal (or a gate signal) to the display panel and a data driver that supplies a data signal to the display panel.

In the above display device, when a scan signal and a data signal are supplied to subpixels arranged in a matrix form, the selected subpixel emits light, thereby displaying an image.

The display device described above is used when implementing various devices such as a television, a monitor, a smart phone, and a smart watch. Meanwhile, when the display device is implemented as a small model such as a smartphone, a narrow bezel is required for slimming the display panel. However, in the case of a conventional liquid crystal display, when the display panel is implemented with a narrow bezel, it is difficult to improve heat dissipation of the driving unit as well as noise such as EMI and it is difficult to protect the driving unit from external shocks, and thus improvement is required.

The present invention for solving the problems of the background art described above can have a structural requirement of a narrow bezel for slimming a display panel, as well as a heat dissipation problem of the driving unit (overheating prevention), noise problems such as EMI, and external shock problems. To improve.

The present invention relates to a display device including a display panel, a cover bottom, a flexible circuit board, a first adhesive member, a printed circuit board, and a driver. The display panel displays an image. The cover bottom accommodates the display panel. As the flexible circuit board has one end attached to the pad area of the display panel and has at least two bending parts, the flexible circuit board is bent toward the rear surface of the cover bottom. The first adhesive member is located between the rear surface of the cover bottom and the rear surface of the flexible circuit board, and attaches and fixes the flexible circuit board to the cover bottom. The printed circuit board is attached to the other end of the flexible circuit board. The driver is mounted on one surface of the flexible circuit board facing the upper surface of the printed circuit board.

Among the bending parts of the flexible circuit board, a second adhesive member attaching and fixing the first and second bending parts of the flexible circuit board, and the printed circuit on the flexible circuit board is located between the upper surface of the printed circuit board and the upper surface of the flexible circuit board. It may further include a third adhesive member for attaching and fixing the substrate.

A third adhesive member positioned between the upper surface of the printed circuit board and the upper surface of the flexible circuit board and attaching and fixing the printed circuit board to the flexible circuit board may be further included.

The third adhesive member may include an open portion from which a portion corresponding to the driving unit is removed to maintain a spaced apart space between the printed circuit board and the flexible circuit board, and to attach and fix the printed circuit board to the flexible circuit board.

At least one of the first to third adhesive members includes a lower adhesive layer, a sheet layer, and an upper adhesive layer, and the sheet layer is graphite, aluminum (Al), and copper having excellent thermal conductivity and EMI (electromagnetic wave) shielding ability. It can be made of one of (Cu).

The fourth adhesive member further includes a fourth adhesive member attached to the rear surface of the printed circuit board, and the fourth adhesive member includes a single layer, a fourth lower adhesive layer, and a fourth adhesive layer positioned on the second or fourth sheet layer. It consists of three layers further including an upper finishing layer, and the fourth sheet layer may be made of one of graphite, aluminum (Al), and copper (Cu) having excellent thermal conductivity and EMI (electromagnetic wave) shielding ability.

The flexible circuit board is bent three times in a first direction, in a second direction corresponding to a direction opposite to the first direction, and a first direction, so that part and side surfaces of the display panel (lower substrate) and the first adhesive member A first bending portion in a digut (⊂) shape surrounding the rear surface of the second adhesive member, a second bending portion in an inverted shape (⊃) surrounding the top, side and rear surfaces of the second adhesive member, and an upper surface of the third adhesive member, It may include a third adhesive member and a third bending portion of a digu (⊂) shape surrounding the side surface of the printed circuit board and the back surface of the printed circuit board.

The flexible circuit board is bent twice in the first direction and in the second direction corresponding to the opposite direction of the first direction, thereby enclosing a part and side surfaces of the display surface (lower board) of the display panel and the rear surface of the first adhesive member. It may include a first bending portion in a digut (⊂) shape, and a second bending portion in an inverted digut (⊃) shape that surrounds the upper and side surfaces of the third adhesive member and is located on a part of the upper surface of the printed circuit board. .

The third adhesive member may further include a plurality of ventilation paths formed around the open portion.

The cover bottom may be made of a metal material so as to form a heat dissipation path through which heat generated from the driving unit is transferred to the cover bottom through the first bonding member or the first and second bonding members to be discharged.

The present invention has an effect of not only having a structural requirement of a narrow bezel for slimming a display panel, but also improving a heat dissipation problem (prevention of overheating) of a driving unit, a noise problem such as EMI, and an external shock problem. Further, according to the present invention, since the flexible circuit board is bent twice or more, the width of the lower bezel of the display panel module can be further narrowed, and the battery area in which the battery is installed can be widened.

1 is a block diagram schematically showing a liquid crystal display device.
FIG. 2 is a circuit diagram schematically illustrating a sub-pixel shown in FIG. 1;
3 is an exploded perspective view of a display panel module.
4 is a view showing an example of a liquid crystal display device implemented as a small model.
5 is a cross-sectional view of a liquid crystal display for explaining a structural problem according to an experimental example.
6 is a cross-sectional view of a liquid crystal display device according to a first embodiment of the present invention.
7 is a cross-sectional view of a second adhesive member.
8 is a plan view of a third adhesive member.
9 is a cross-sectional view of a liquid crystal display device according to a second embodiment of the present invention.
10 is a cross-sectional view of the first and third adhesive members.
11 is a cross-sectional view of a liquid crystal display device according to a third embodiment of the present invention.
12 is a cross-sectional view of a liquid crystal display device according to a fourth embodiment of the present invention.
13 is a cross-sectional view of a liquid crystal display device according to a fifth embodiment of the present invention.

Hereinafter, specific details for carrying out the present invention will be described with reference to the accompanying drawings.

As information technology develops, the market for display devices, which is a connection medium between users and information, is growing. Accordingly, the use of display devices such as a liquid crystal display (LCD), an organic light emitting diode display (OLED), and a plasma display panel (PDP) is increasing.

Some of the above-described display devices, for example, a liquid crystal display device or an organic light emitting display device, include a display panel including a plurality of sub-pixels arranged in a matrix form and a driver driving the display panel. The driver includes a scan driver that supplies a scan signal (or a gate signal) to the display panel and a data driver that supplies a data signal to the display panel.

In the above display device, when a scan signal and a data signal are supplied to subpixels arranged in a matrix form, the selected subpixel emits light, thereby displaying an image.

Hereinafter, the present invention will be described using a liquid crystal display as an example. However, it goes without saying that the present invention can be applied not only to a liquid crystal display device but also to an organic light emitting display device.

1 is a block diagram schematically illustrating a liquid crystal display device, FIG. 2 is a circuit diagram schematically illustrating a sub-pixel illustrated in FIG. 1, and FIG. 3 is an exploded perspective view of a display panel module.

1 to 3, the liquid crystal display includes a timing control unit 130, a gate driving unit 140, a data driving unit 150, a display panel 160, and a backlight unit 170.

The timing control unit 130 outputs a gate timing control signal GDC for controlling an operation timing of the gate driver 140 and a data timing control signal DDC for controlling an operation timing of the data driver 150. The timing control unit 130 supplies the data signal DATA supplied from the image processing unit 110 together with the data timing control signal DDC to the data driver 150.

The gate driver 140 outputs a gate signal while shifting the level of the gate voltage in response to the gate timing control signal GDC supplied from the timing control unit 130. The gate driver 140 supplies a gate signal to the sub-pixels SP included in the display panel 160 through the gate lines GL. The gate driver 140 is formed in the form of an integrated circuit (IC) or is formed on the display panel 160 in a gate in panel method.

The data driver 150 samples and latches the data signal DATA in response to the data timing control signal DDC supplied from the timing control unit 130, converts it into a gamma reference voltage, and outputs the sample. The data driver 150 supplies the data signal DATA to the sub-pixels SP included in the display panel 160 through the data lines DL. The data driver 150 is formed in the form of an integrated circuit (IC).

The display panel 160 displays an image in response to the gate signal supplied from the gate driver 140 and the data signal DATA supplied from the data driver 150. The display panel 160 includes sub-pixels SP that control light provided through the backlight unit 170.

One sub-pixel includes a switching transistor SW, a storage capacitor Cst, and a liquid crystal layer Clc. The gate electrode of the switching transistor SW is connected to the gate line GL1 and the source electrode is connected to the data line DL1. The storage capacitor Cst has one end connected to the drain electrode of the switching transistor SW and the other end connected to the common voltage line Vcom. The liquid crystal layer Clc is formed between the pixel electrode 1 connected to the drain electrode of the switching transistor SW and the common electrode 2 connected to the common voltage line Vcom.

The display panel 160 is a TN (Twisted Nematic) mode, VA (Vertical Alignment) mode, IPS (In Plane Switching) mode, FFS (Fringe Field Switching) mode according to the structure of the pixel electrode 1 and the common electrode 2 Alternatively, it is implemented in an ECB (Electrically Controlled Birefringence) mode.

The backlight unit 170 provides light to the display panel 160 by using a light source that emits light. The backlight unit 170 is a light-emitting diode (hereinafter, referred to as LED) 174 that emits light, an LED driving unit that drives the LED 174, an LED substrate 173 on which the LED 174 is mounted, and the LED 174. A light guide plate 175 that converts light into a surface light source, a reflective plate 172 that reflects light from a lower portion of the light guide plate 175, and an optical sheet 176 that condenses and diffuses the light emitted from the light guide plate 175. .

The display panel 160 and the backlight unit 170 are accommodated between the upper cover and the lower cover to be manufactured in the form of a display panel module (refer to FIG. 3 ). The display panel module has a structure accommodated by a cover bottom 171 positioned below the backlight unit 170 and a cover top 165 positioned above the display panel 160. In the drawings, a substrate or film for electrical connection with an external device such as a flexible circuit board or a printed circuit board is omitted.

The cover bottom 171 and the guide panel 177 accommodate an LED 174, a reflective plate (or reflective sheet) 172, a light guide plate 175, and a plurality of optical sheets 176. In addition, the cover top 165 and the guide panel 177 accommodate the display panel 160 and the like.

Hereinafter, a configuration located between the cover bottom 171 to the cover top 165 and functions thereof will be described as follows.

The reflector 172 is mounted on the cover bottom 171. The reflector 172 serves to reflect light from the lower portion of the light guide plate. The reflector 172 may be integrally formed with the cover bottom 171 (a reflector is attached to the cover in the form of a film or printed). In this case, the reflector 172 is not configured separately.

The light guide plate 175 is mounted on the reflective plate 172 (or cover bottom). The light guide plate 175 serves to convert the light emitted from the LED 174 into a surface light source. The LED substrate 173 on which the LED 174 is mounted is installed on the light incident part (or the other side) of the light guide plate 175.

A plurality of optical sheets 176 are mounted on the light guide plate 175. The plurality of optical sheets 176 serves to condense and diffuse the light emitted from the light guide plate 175. The plurality of optical sheets 176 are composed of one or more sheets having different structures and functions.

The guide panel 177 is mounted on the cover bottom 171. The guide panel 177 supports the display panel 160 and serves to fix a plurality of optical sheets 176 and the like to be safely received in the cover bottom 171. The guide panel 177 has a frame shape through which light emitted through a plurality of optical sheets 176 can pass.

Meanwhile, the guide panel 177 may be omitted according to the mechanical structure of the cover bottom 171 (when the cover bottom is designed to have a function of a guide panel). The cover bottom 171 may be made of a resin such as plastic or a metal material such as aluminum (Al) or copper (Cu).

The display panel 160 is mounted on the guide panel 177 (or cover bottom). The display panel 160 serves to display an image. The display panel 160 includes a lower substrate 160a on which a switching transistor is formed, an upper substrate 160b on which a color filter is formed, and a liquid crystal layer formed therebetween. The display panel 160 is accommodated by the cover top 165 and the guide panel 177. The cover top 165 has a frame shape capable of exposing the display area of the display panel 160. Meanwhile, the cover top 165 may be omitted according to the mechanical structure of the cover bottom 171 (when the cover bottom is designed to accommodate the display panel).

The liquid crystal display device described above is used when implementing various devices such as a television, a monitor, a smart phone, and a smart watch. In the following description, when the liquid crystal display is implemented as a small model such as a smartphone, problems that may occur when implemented with a narrow bezel are considered.

4 is a view showing an example of a liquid crystal display implemented as a small model, and FIG. 5 is a cross-sectional view of a liquid crystal display for explaining a structural problem according to an experimental example.

As shown in FIG. 4, the liquid crystal display may be implemented as a small model like the smart phone 100. In this case, the liquid crystal display device requires a narrow bezel for slimming the display panel.

<Experimental Example>

As shown in FIG. 5, in the liquid crystal display according to the experimental example, a display panel 160, polarizing plates 161 and 162, an optical sheet 176, a light guide plate 175, a cover bottom 171, and a guide panel 177 ), a flexible circuit board 155, a driver 150, a printed circuit board 135, a first double-sided tape TP1, and a second double-sided tape TP2.

Meanwhile, it is referred to that the display panel module illustrated in FIG. 5 has a structure in which the cover top is omitted. Further, the driving unit 150 shown in the drawing may be a data driving unit or an integrated driving unit in which a data driving unit and a timing control unit are integrated, and the gate driving unit may be formed in the left and right bezel regions of the display panel in a gate-in panel method, but is not limited thereto. Does not.

Unlike mid- to large-sized models such as TVs and monitors, small models have a battery area BA in which batteries are installed on the rear of the display panel module. For this reason, when implementing a narrow bezel for slimming a display panel in a small model, the battery area BA is also an object of consideration. This is because, for example, the battery area BA may be reduced depending on the curved design of the flexible circuit board 155 or the length of the printed circuit board 135.

In addition, medium-sized models such as televisions and monitors are relatively thicker than small models such as experimental examples. Therefore, in the case of a medium- to large-sized model, when COF (Chip On Film; a method of mounting the driving unit on a flexible circuit board) is applied, the driving unit 150 is protected by the guide panel 177 and the cover top. However, since the small model is relatively thinner than the medium and large model and most of the cover top is omitted for slimming, when COF is applied, the driving unit 150 has a structural vulnerability that is not protected from external impact.

In addition, since the small model does not have a heat dissipation path through which heat generated from the driving unit 150 can escape, there is a high possibility of a reliability issue.

To solve the above problem, in the experimental example, the flexible circuit board 155 on which the driving unit 150 is mounted was bent once in the first direction in order to make the display panel 160 slimmer. One end of the flexible circuit board 155 is attached to a pad area located on the upper surface of the lower substrate 160a of the display panel 160. As a result, the flexible circuit board 155 has a bending portion surrounding a part of the display surface, the side surface, and the rear surface of the display panel 160 in a ⊂ shape.

Accordingly, the first region 155a of the flexible circuit board 155 is horizontal with the display surface (lower substrate) of the display panel 160, and the second region 155b is the side and cover of the display panel 160 The side surface of the bottom 171 is horizontal and the third area 155c is horizontal with the rear surface of the cover bottom 171.

In addition, in the experimental example, the driving unit 150 was mounted on the rear surface of the third region 155c of the flexible circuit board 155 facing the rear surface of the cover bottom 171. In addition, the printed circuit board 135 was attached to the rear end of the third region 155c of the flexible circuit board 155. The printed circuit board 135 is provided to transmit various signals output from an external device (eg, a system) to the flexible circuit board 155. In the drawing, it is shown that no device is mounted on the printed circuit board 135. However, an IC (eg, a timing controller) for driving the display panel module may be mounted on the printed circuit board 135.

In addition, in the experimental example, in order to prevent the flow of the printed circuit board 135, the first double-sided tape (TP1) having a double-sided adhesive (adhesion) property between the rear surface of the cover bottom 171 and the front surface of the printed circuit board 135 Was attached. In addition, a second double-sided tape having a double-sided adhesive (adhesion) characteristic between the rear surface of the cover bottom 171 and the rear surface of the third area 155c of the flexible circuit board 155 to protect the driving unit 150 from external impact, etc. (TP2) was attached.

In the experimental example, the structural requirements of the narrow bezel for slimming the display panel 160 could be met to some extent. However, the experimental example is due to the structural characteristics of the flexible circuit board 155 and the printed circuit board 135 and the material characteristics of the double-sided tapes TP1 and TP2, the heat dissipation problem of the driver 150, noise problems such as EMI, and external There was a difficulty in improving (satisfying) the shock problem.

In the following description, when the liquid crystal display device is implemented as a small model such as a smart phone, an improvement plan for a problem that may occur when implemented as a narrow bezel will be described.

<First Example>

6 is a cross-sectional view of a liquid crystal display device according to a first embodiment of the present invention, FIG. 7 is a cross-sectional view of a second adhesive member, and FIG. 8 is a plan view of a third adhesive member.

6 to 8, the liquid crystal display according to the first embodiment of the present invention includes a display panel 160, polarizing plates 161 and 162, an optical sheet 176, a light guide plate 175, and a cover bottom. 171, guide panel 177, flexible circuit board 155, driver 150, printed circuit board 135, first adhesive member 156, second adhesive member 157 and third adhesive member ( 158) are included.

Meanwhile, it is referred to that the display panel module illustrated in FIG. 6 has a structure in which the cover top is omitted. Further, the driving unit 150 shown in the drawing may be a data driving unit or an integrated driving unit in which a data driving unit and a timing control unit are integrated, and the gate driving unit may be formed in the left and right bezel regions of the display panel in a gate-in panel method, but is not limited thereto. Does not.

In the first embodiment of the present invention, in order to solve the problems occurring in the prior art and the experimental example, the flexible circuit board 155 on which the driving unit 150 is mounted is moved in the first direction and the second direction (the opposite direction to the first direction). And bent three times in the first direction. One end of the flexible circuit board 155 is attached to a pad area located on the upper surface of the lower substrate 160a of the display panel 160.

As a result, the flexible circuit board 155 has a first bending part surrounding a part and side surfaces of the display surface (lower board) of the display panel 160 and the rear surface of the first adhesive member 156 in a digut (⊂) shape. do. In addition, the flexible circuit board 155 has a second bending portion surrounding the upper surface, the side surface, and the rear surface of the second adhesive member 157 in an inverted (⊃) shape. In addition, the flexible circuit board 155 has a digut (⊂) shape and the upper surface of the third adhesive member 158, the side surface of the third adhesive member 158 and the printed circuit board 135, and the printed circuit board 135 It has a third bending part surrounding the back surface.

Accordingly, the first region 155a of the flexible circuit board 155 is horizontal with the display surface (lower substrate) of the display panel 160. The second area 155b of the flexible circuit board 155 is horizontal with the side surface of the display panel 160 and the side surface of the cover bottom 171. The third area 155c of the flexible circuit board 155 is horizontal with the rear surface of the cover bottom 171 (or the rear surface of the first adhesive member). The fourth area 155d of the flexible circuit board 155 is horizontal with the first side surface of the second adhesive member 157. The fifth region 155e of the flexible circuit board 155 is horizontal with the rear surface of the second adhesive member 157. The sixth area 155f of the flexible circuit board 155 is horizontal with the second side surface of the second adhesive member 157. The seventh area 155g of the flexible circuit board 155 is horizontal with the rear surface of the printed circuit board 135.

The first to third regions 155a to 155c of the flexible circuit board 155 are included in the first bending portion, the third to fifth regions 155c to 155e are included in the second bending portion, and the fifth region (155e ~ 155g) is included in the third bending part.

In the first embodiment, the printed circuit board 135 is attached to the rear end of the seventh region 155g of the flexible circuit board 155. Further, the driving unit 150 is mounted on the upper surface of the fifth area 155e of the flexible circuit board 155 facing the upper surface of the printed circuit board 155. The printed circuit board 135 is provided to transmit various signals output from an external device (eg, a system) to the flexible circuit board 155. In the drawing, it is shown that no device is mounted on the printed circuit board 135. However, an IC (eg, a timing controller) for driving the display panel module may be mounted on the printed circuit board 135.

In addition, in the first embodiment, in order to prevent the flow of the first bending portion of the flexible circuit board 155, a first layer between the rear surface of the cover bottom 171 and the rear surface of the third region 155c of the flexible circuit board 155 An adhesive member 156 is formed. The first adhesive member 156 has a double-sided adhesive (adhesive) characteristic capable of attaching and fixing structures located above and below it.

In addition, in the first embodiment, in order to improve the heat dissipation characteristic of the driving unit 150, a second bonding member 157 is formed on the second bending portion of the flexible circuit board 155, that is, on the rear surface of the driving unit 150. The second adhesive member 157 includes a second lower adhesive layer 157a, a second sheet layer 157b, and a second upper adhesive layer 157c as shown in FIG. 7. The second lower and second upper adhesive layers 157a and 157c may be made of a resin or tape having double-sided adhesive properties.

Alternatively, the second sheet layer 157b may be made of one of graphite, aluminum (Al), and copper (Cu). The second sheet layer 157b may be manufactured as a thin film layer of a sheet by coating the above material and dispersing it on a base material (resin, etc.) so as to have excellent thermal conductivity and EMI (electromagnetic wave) shielding ability as described above. Not limited.

In addition, in the first embodiment, the upper surface of the flexible circuit board 155 on which the driving unit 150 is mounted and the printed circuit board 135 to prevent the flow of the printed circuit board 135 and protect the driving unit 150 from external impact. ) To form a third adhesive member 158 between the upper surfaces. The third adhesive member 158 has a double-sided adhesive (adhesive) characteristic capable of attaching and fixing structures located above and below it. The third adhesive member 158 also serves to maintain a space (a separation space; or a gap) existing between the flexible circuit board 155 and the printed circuit board 135. The printed circuit board 135 has one end attached to the other end of the flexible circuit board 155.

The third adhesive member 158 may have an open portion SQ from which a portion corresponding to the driving unit 150 is removed, as shown in FIG. 8A. Such a structure prevents the flow of the printed circuit board 135 and protects the driving unit 150 from external impact. This is because the printed circuit board 135 and the third adhesive member 158 serve as a structure to protect the driving unit 150.

Alternatively, the third adhesive member 158 may have an open portion SQ from which a portion corresponding to the driving unit 150 is removed as shown in FIG. 8 (b) and a ventilation path AH formed around it. When selected as the third adhesive member 158 having an open part (SQ) and a ventilation path (AH), the flow of the printed circuit board 135 is prevented, the external shock of the driving part 150 is prevented, and heat dissipation characteristics are improved. Both effects can be expressed. Meanwhile, the ventilation path AH is formed by a plurality of holes drilled between the outside of the third adhesive member 158 and the open portion SQ. However, the ventilation path AH may be formed by a third adhesive member 158 having a structure divided into four.

In addition, as in the first embodiment, as a result of bending the flexible circuit board 155 three times and attaching the printed circuit board 135 to the end thereof, one end of the display panel module and the other end of the printed circuit board 135 are combined. The distance L2 became shorter than the experimental example (see L1 in Fig. 5). Accordingly, in the first embodiment, the battery area BA in which the battery is installed can also be wider than in the experimental example.

In the above first embodiment, as well as having the structural requirements of the narrow bezel for slimming the display panel 160, the heat dissipation problem of the driving unit 150, noise problems such as EMI, and external shock problems can be improved. There is.

<Second Example>

9 is a cross-sectional view of a liquid crystal display according to a second embodiment of the present invention, and FIG. 10 is a cross-sectional view of first and third adhesive members.

9 and 10, in the liquid crystal display according to the second embodiment of the present invention, a display panel 160, polarizing plates 161 and 162, an optical sheet 176, a light guide plate 175, and a cover bottom 171, guide panel 177, flexible circuit board 155, driver 150, printed circuit board 135, first adhesive member 156, second adhesive member 157 and third adhesive member ( 158) are included.

Meanwhile, it is referred to that the display panel module illustrated in FIG. 9 has a structure in which the cover top is omitted. Further, the driving unit 150 shown in the drawing may be a data driving unit or an integrated driving unit in which a data driving unit and a timing control unit are integrated, and the gate driving unit may be formed in the left and right bezel regions of the display panel in a gate-in panel method, but is not limited thereto. Does not.

In the second embodiment of the present invention, in order to solve the problems that occur in the prior art and the experimental examples, the flexible circuit board 155 on which the driving unit 150 is mounted is moved in the first direction and the second direction (the opposite direction to the first direction). And bent three times in the first direction. One end of the flexible circuit board 155 is attached to a pad area located on the upper surface of the lower substrate 160a of the display panel 160.

As a result, the flexible circuit board 155 has a first bending part surrounding a part and side surfaces of the display surface (lower board) of the display panel 160 and the rear surface of the first adhesive member 156 in a digut (⊂) shape. do. In addition, the flexible circuit board 155 has a second bending portion surrounding the upper surface, the side surface, and the rear surface of the second adhesive member 157 in an inverted (⊃) shape. In addition, the flexible circuit board 155 has a digut (⊂) shape and the upper surface of the third adhesive member 158, the side surface of the third adhesive member 158 and the printed circuit board 135, and the printed circuit board 135 It has a third bending part surrounding the back surface.

Accordingly, the first region 155a of the flexible circuit board 155 is horizontal with the display surface (lower substrate) of the display panel 160. The second area 155b of the flexible circuit board 155 is horizontal with the side surface of the display panel 160 and the side surface of the cover bottom 171. The third area 155c of the flexible circuit board 155 is horizontal with the rear surface of the cover bottom 171. The fourth area 155d of the flexible circuit board 155 is horizontal with the first side surface of the second adhesive member 157. The fifth region 155e of the flexible circuit board 155 is horizontal with the rear surface of the second adhesive member 157. The sixth area 155f of the flexible circuit board 155 is horizontal with the second side surface of the second adhesive member 157. The seventh area 155g of the flexible circuit board 155 is horizontal with the rear surface of the printed circuit board 135.

The first to third regions 155a to 155c of the flexible circuit board 155 are included in the first bending portion, the third to fifth regions 155c to 155e are included in the second bending portion, and the fifth region (155e ~ 155g) is included in the third bending part.

The second embodiment is similar to or the same as the first embodiment, but the configurations of the cover bottom 171 and the first adhesive member 156 to the third adhesive member 158 are slightly different. Therefore, hereinafter, only the above differences will be described in order to avoid duplication of description.

In the second embodiment, a first adhesive member between the rear surface of the cover bottom 171 and the rear surface of the third region 155c of the flexible circuit board 155 to prevent the flow of the first bending portion of the flexible circuit board 155 Form 156. The first adhesive member 156 includes a first lower adhesive layer 156a, a first sheet layer 156b, and a first upper adhesive layer 156c, as shown in FIG. 10A. The first lower and first upper adhesive layers 156a and 156c may be made of a resin or tape having double-sided adhesive properties.

Alternatively, the first sheet layer 156b may be made of one of graphite, aluminum (Al), and copper (Cu). The first sheet layer 156b can be made into a thin film layer of a sheet by coating the above material and dispersing it on a base material (resin, etc.) to have excellent thermal conductivity and EMI (electromagnetic wave) shielding ability as described above. Not limited.

In addition, in the second embodiment, in order to improve the heat dissipation characteristics of the driving unit 150, the second bonding member 157 is formed on the second bending portion of the flexible circuit board 155, that is, on the rear surface of the driving unit 150. Since the second adhesive member 157 is the same as the first embodiment, reference will be made to FIG. 7 of the first embodiment and the corresponding description.

In addition, in the second embodiment, in order to prevent the flow of the printed circuit board 135 and to improve the heat dissipation problem of the driving unit 150, noise problems such as EMI, and external shock problems, the flexible circuit board on which the driving unit 150 is mounted ( A third adhesive member 158 is formed between the upper surface of the 155 and the upper surface of the printed circuit board 135.

The third adhesive member 158 includes a third lower adhesive layer 158a, a third sheet layer 158b, and a third upper adhesive layer 158c, as shown in FIG. 10B. The third lower and third upper adhesive layers 158a and 158b may be made of a resin or tape having double-sided adhesive properties. Alternatively, the third sheet layer 158b may be made of one of graphite, aluminum (Al), and copper (Cu). The third sheet layer 158b can be made into a thin film layer of a sheet by coating the above material and dispersing it on a base material (resin, etc.) to have excellent thermal conductivity and EMI (electromagnetic wave) shielding ability as above. Not limited.

As in the first embodiment, the third adhesive member 158 has an open portion SQ from which a portion corresponding to the driving portion 150 is removed, or has a structure having an open portion SQ and a ventilation path formed around it. Can be configured. In addition, since the printed circuit board 135 and the third adhesive member 158 serve as a structure protecting the driving unit 150, the driving unit 150 can be protected from external impact.

In addition, in the second embodiment, since all of the first to third adhesive members 156 to 158 have heat transfer characteristics, the cover bottom 171 is also preferably made of a metal material. In this case, part of the heat generated from the driving unit 150 is discharged (first discharged) by the third adhesive member 158. In addition, most of the heat generated from the driving unit 150 is discharged (second discharged) through a heat dissipation path leading to the second adhesive member 157, the first adhesive member 156 and the cover bottom 171.

On the other hand, the thickness of the first and second adhesive members 156 and 157 forms a heat dissipation path for dissipating heat generated from the driving unit 150, so the thicker the thickness, the better. However, when the thickness t1 of the first and second bonding members 156 and 157 is formed to be thinner than the thickness t2 of the third bonding member 158, it is possible to provide an advantage in reducing the weight of the display panel module.

In addition, since the second embodiment also bends the flexible circuit board 155 three times and attaches the printed circuit board 135 to the end thereof, the distance from one end of the display panel module to the other end of the printed circuit board 135 ( L2) is similar to the first embodiment. Accordingly, in the second embodiment, the battery area in which the battery is installed may also be wider than in the experimental example.

In the second embodiment described above, as well as having the structural requirements of the narrow bezel for slimming the display panel 160, the heat dissipation problem of the driving unit 150, the noise problem such as EMI, and the external shock problem can be improved. There is.

<Third Example>

11 is a cross-sectional view of a liquid crystal display device according to a third embodiment of the present invention.

As shown in FIG. 11, in the liquid crystal display according to the third embodiment of the present invention, a display panel 160, polarizing plates 161 and 162, an optical sheet 176, a light guide plate 175, and a cover bottom 171 , The guide panel 177, the flexible circuit board 155, the driving unit 150, the printed circuit board 135, the first adhesive member 156, the second adhesive member 157 and the third adhesive member 158 Included.

Meanwhile, it is referred to that the display panel module illustrated in FIG. 11 has a structure in which the cover top is omitted. Further, the driving unit 150 shown in the drawing may be a data driving unit or an integrated driving unit in which a data driving unit and a timing control unit are integrated, and the gate driving unit may be formed in the left and right bezel regions of the display panel in a gate-in panel method, but is not limited thereto. Does not.

In the third embodiment of the present invention, in order to solve the problems occurring in the prior art and the experimental example, the flexible circuit board 155 on which the driving unit 150 is mounted is moved in the first direction and the second direction (the opposite direction to the first direction). Bent twice. One end of the flexible circuit board 155 is attached to a pad area located on the upper surface of the lower substrate 160a of the display panel 160.

As a result, the flexible circuit board 155 has a first bending part surrounding a part and side surfaces of the display surface (lower board) of the display panel 160 and the rear surface of the first adhesive member 156 in a digut (⊂) shape. do. In addition, the flexible circuit board 155 surrounds the upper and side surfaces of the third adhesive member 158 in a reversed (⊃) shape, and has a second bending portion positioned on a part of the upper surface of the printed circuit board 135. .

Accordingly, the first region 155a of the flexible circuit board 155 is horizontal with the display surface (lower substrate) of the display panel 160. The second area 155b of the flexible circuit board 155 is horizontal with the side surface of the display panel 160 and the side surface of the cover bottom 171. The third area 155c of the flexible circuit board 155 is horizontal with the rear surface of the cover bottom 171 (or the rear surface of the first adhesive member). The fourth region 155d of the flexible circuit board 155 is horizontal with the first side surface of the third adhesive member 158. The fifth area 155e of the flexible circuit board 155 is horizontal with the upper surface of the printed circuit board 153.

The first to third regions 155a to 155c of the flexible circuit board 155 are included in the first bending portion, and the third to fifth regions 155c to 155e are included in the second bending portion.

In the third embodiment, the printed circuit board 135 is attached to the rear end of the fifth region 155e of the flexible circuit board 155. In addition, the driving unit 150 is mounted on the upper surface of the third region 155c of the flexible circuit board 155 facing the upper surface of the printed circuit board 155. The printed circuit board 135 is provided to transmit various signals output from an external device (eg, a system) to the flexible circuit board 155. In the drawing, it is shown that no device is mounted on the printed circuit board 135. However, an IC (eg, a timing controller) for driving the display panel module may be mounted on the printed circuit board 135.

In addition, in the third embodiment, in order to prevent the flow of the first bending portion of the flexible circuit board 155, a first layer between the rear surface of the cover bottom 171 and the rear surface of the third region 155c of the flexible circuit board 155 An adhesive member 156 is formed. The first adhesive member 156 includes a first lower adhesive layer, a first sheet layer, and a first upper adhesive layer, as described in FIG. 10A of the second embodiment. In addition, the first sheet layer may be made of one of graphite, aluminum (Al), and copper (Cu). The first adhesive member 156 improves heat dissipation characteristics of the driving unit 150 at the rear surface of the driving unit 150.

In addition, in the third embodiment, in order to prevent the flow of the printed circuit board 135 and to improve the heat dissipation problem of the driving unit 150, noise problems such as EMI, and external shock problems, the flexible circuit board on which the driving unit 150 is mounted ( A third adhesive member 158 is formed between the upper surface of the 155 and the upper surface of the printed circuit board 135. The third adhesive member 158 has a double-sided adhesive (adhesive) characteristic capable of attaching and fixing structures located above and below it. The third adhesive member 158 also serves to maintain a space (a separation space; or a gap) existing between the flexible circuit board 155 and the printed circuit board 135. The printed circuit board 135 has one end attached to the other end of the flexible circuit board 155.

The third adhesive member 158 includes a third lower adhesive layer, a third sheet layer, and a third upper adhesive layer, as described in FIG. 10B of the second embodiment. In addition, the third sheet layer may be made of one of graphite, aluminum (Al), and copper (Cu).

As in the first embodiment, the third adhesive member 158 has an open portion SQ from which a portion corresponding to the driving portion 150 is removed, or has a structure having an open portion SQ and a ventilation path formed around it. Can be configured. In addition, since the printed circuit board 135 and the third adhesive member 158 serve as a structure protecting the driving unit 150, the driving unit 150 can be protected from external impact.

In addition, in the third embodiment, since the first and third adhesive members 156 and 158 have heat transfer characteristics, it is preferable that the cover bottom 171 is also made of a metal material. In this case, part of the heat generated from the driving unit 150 is discharged (first discharged) by the third adhesive member 158. In addition, most of the heat generated from the driving unit 150 is discharged (second discharged) through a heat dissipation path leading to the first adhesive member 156 and the cover bottom 171.

In addition, in the third embodiment, the flexible circuit board 155 is bent twice and the printed circuit board 135 is attached to its end, but the distance (L2) is the sum of the other end of the printed circuit board 135 from one end of the display panel module. ) Is similar to the first embodiment. Accordingly, in the third embodiment, the battery area in which the battery is installed can also be wider than in the experimental example.

The third embodiment has an effect of not only having the structural requirements of the narrow bezel for slimming the display panel 160, but also improving the heat dissipation problem of the driving unit 150, noise problems such as EMI, and external shock problems. There is.

<Fourth Example>

12 is a cross-sectional view of a liquid crystal display device according to a fourth embodiment of the present invention.

As shown in FIG. 12, in the liquid crystal display according to the fourth exemplary embodiment of the present invention, a display panel 160, polarizing plates 161 and 162, an optical sheet 176, a light guide plate 175, and a cover bottom 171 are provided. , The guide panel 177, the flexible circuit board 155, the driving unit 150, the printed circuit board 135, the first adhesive member 156, the second adhesive member 157, the third adhesive member 158 and A fourth adhesive member 159 is included.

Meanwhile, it is referred to that the display panel module illustrated in FIG. 12 has a structure in which the cover top is omitted. Further, the driving unit 150 shown in the drawing may be a data driving unit or an integrated driving unit in which a data driving unit and a timing control unit are integrated, and the gate driving unit may be formed in the left and right bezel regions of the display panel in a gate-in panel method, but is not limited thereto. Does not.

In the fourth embodiment of the present invention, in order to solve the problems that occur in the prior art and the experimental example, the flexible circuit board 155 on which the driving unit 150 is mounted is moved in the first direction and the second direction (the opposite direction to the first direction). And bent three times in the first direction. One end of the flexible circuit board 155 is attached to a pad area located on the upper surface of the lower substrate 160a of the display panel 160.

As a result, the flexible circuit board 155 has a first bending part surrounding a part and side surfaces of the display surface (lower board) of the display panel 160 and the rear surface of the first adhesive member 156 in a digut (⊂) shape. do. In addition, the flexible circuit board 155 has a second bending portion surrounding the upper surface, the side surface, and the rear surface of the second adhesive member 157 in an inverted (⊃) shape. In addition, the flexible circuit board 155 has a digut (⊂) shape and the upper surface of the third adhesive member 158, the side surface of the third adhesive member 158 and the printed circuit board 135, and the printed circuit board 135 It has a third bending part surrounding the back surface.

Accordingly, the first region 155a of the flexible circuit board 155 is horizontal with the display surface (lower substrate) of the display panel 160. The second area 155b of the flexible circuit board 155 is horizontal with the side surface of the display panel 160 and the side surface of the cover bottom 171. The third area 155c of the flexible circuit board 155 is horizontal with the rear surface of the cover bottom 171. The fourth area 155d of the flexible circuit board 155 is horizontal with the first side surface of the second adhesive member 157. The fifth region 155e of the flexible circuit board 155 is horizontal with the rear surface of the second adhesive member 157. The sixth region 155f of the flexible circuit board 155 is horizontal with the second side surface of the second adhesive member 157. The seventh area 155g of the flexible circuit board 155 is horizontal with the rear surface of the printed circuit board 135.

The first to third regions 155a to 155c of the flexible circuit board 155 are included in the first bending portion, the third to fifth regions 155c to 155e are included in the second bending portion, and the fifth region (155e ~ 155g) is included in the third bending part.

The fourth embodiment is similar or the same as the second embodiment, but the configuration of the fourth adhesive member 159 is somewhat different. Therefore, hereinafter, only the above differences will be described in order to avoid duplication of description. For other configurations, features, and effects, refer to the second embodiment.

In the fourth embodiment, the fourth adhesive member 159 is attached to the rear surface of the printed circuit board 135. The fourth adhesive member 159 is composed of a single layer or two layers including a fourth lower adhesive layer and a fourth sheet layer (the structure of the adhesive member as shown in FIG. 10 is taken, but the upper layer is omitted) or a fourth sheet layer It may be made of a three-layer structure further including a fourth upper finishing layer positioned on the top.

The fourth adhesive member 159 is attached to the rear surface of the printed circuit board 135 in order to improve the heat dissipation problem of the driving unit 150 and noise problems such as EMI. To this end, the fourth adhesive member 159 has a layer made of one of graphite, aluminum (Al), and copper (Cu) having excellent thermal conductivity and EMI (electromagnetic wave) shielding ability.

In the fourth embodiment, since all of the first to third adhesive members 156 to 158 have heat transfer characteristics, the cover bottom 171 is preferably made of a metal material. In this case, part of the heat generated from the driving unit 150 is discharged (first discharged) by the third adhesive member 158. In addition, most of the heat generated from the driving unit 150 is discharged (second discharged) through a heat dissipation path leading to the second adhesive member 157, the first adhesive member 156 and the cover bottom 171. In addition, some of the heat generated from the driving unit 150 is discharged (third discharged) by the fourth adhesive member 159.

In addition, since the fourth embodiment also bends the flexible circuit board 155 three times and attaches the printed circuit board 135 to the end thereof, the distance from one end of the display panel module to the other end of the printed circuit board 135 is summed ( L2) is similar to the second embodiment. Accordingly, in the fourth embodiment, the battery area in which the battery is installed can also be wider than in the experimental example.

Therefore, the fourth embodiment can have a structural requirement of a narrow bezel for slimming the display panel 160, as well as a heat dissipation problem of the driving unit 150, a noise problem such as EMI, and an external shock problem. There is. In addition, the fourth embodiment has an effect of further improving the heat dissipation problem of the driving unit 150 and noise problems such as EMI by the function of the adhesive member attached to the rear surface of the printed circuit board.

<Fifth Example>

13 is a cross-sectional view of a liquid crystal display device according to a fifth embodiment of the present invention.

As shown in FIG. 13, in the liquid crystal display according to the fifth embodiment of the present invention, a display panel 160, polarizing plates 161 and 162, an optical sheet 176, a light guide plate 175, and a cover bottom 171 , The guide panel 177, the flexible circuit board 155, the driving unit 150, the printed circuit board 135, the first adhesive member 156, the second adhesive member 157, the third adhesive member 158 and A fourth adhesive member 159 is included.

Meanwhile, it is referred to that the display panel module illustrated in FIG. 13 has a structure in which the cover top is omitted. Further, the driving unit 150 shown in the drawing may be a data driving unit or an integrated driving unit in which a data driving unit and a timing control unit are integrated, and the gate driving unit may be formed in the left and right bezel regions of the display panel in a gate-in panel method, but is not limited thereto. Does not.

In the fifth embodiment of the present invention, in order to solve the problems occurring in the prior art and the experimental example, the flexible circuit board 155 on which the driving unit 150 is mounted is moved in the first direction and the second direction (the opposite direction to the first direction). Bent twice. One end of the flexible circuit board 155 is attached to a pad area located on the upper surface of the lower substrate 160a of the display panel 160.

As a result, the flexible circuit board 155 has a first bending part surrounding a part and side surfaces of the display surface (lower board) of the display panel 160 and the rear surface of the first adhesive member 156 in a digut (⊂) shape. do. In addition, the flexible circuit board 155 surrounds the upper and side surfaces of the third adhesive member 158 in a reversed (⊃) shape, and has a second bending portion positioned on a part of the upper surface of the printed circuit board 135. .

Accordingly, the first region 155a of the flexible circuit board 155 is horizontal with the display surface (lower substrate) of the display panel 160. The second area 155b of the flexible circuit board 155 is horizontal with the side surface of the display panel 160 and the side surface of the cover bottom 171. The third area 155c of the flexible circuit board 155 is horizontal with the rear surface of the cover bottom 171 (or the rear surface of the first adhesive member). The fourth region 155d of the flexible circuit board 155 is horizontal with the first side surface of the third adhesive member 158. The fifth area 155e of the flexible circuit board 155 is horizontal with the upper surface of the printed circuit board 153.

The first to third regions 155a to 155c of the flexible circuit board 155 are included in the first bending portion, and the third to fifth regions 155c to 155e are included in the second bending portion.

The fifth embodiment is similar to or the same as the third embodiment, but the configuration of the fourth adhesive member 159 is somewhat different. Therefore, hereinafter, only the above differences will be described in order to avoid duplication of description. For other configurations, features, and effects, refer to the third embodiment.

In the fifth embodiment, the fourth adhesive member 159 is attached to the rear surface of the printed circuit board 135. The fourth adhesive member 159 may be formed of a single layer or may have a two-layer structure including a fourth lower adhesive layer and a fourth sheet layer, or a three-layer structure further including a fourth upper finishing layer positioned on the fourth sheet layer. have.

The fourth adhesive member 159 is attached to the rear surface of the printed circuit board 135 in order to improve the heat dissipation problem of the driving unit 150 and noise problems such as EMI. To this end, the fourth adhesive member 159 has a layer made of one of graphite, aluminum (Al), and copper (Cu) having excellent thermal conductivity and EMI (electromagnetic wave) shielding ability.

In the fifth embodiment, since all of the first to third adhesive members 156 to 158 have heat transfer characteristics, the cover bottom 171 is also preferably made of a metal material. In this case, part of the heat generated from the driving unit 150 is discharged (first discharged) by the third adhesive member 158. In addition, most of the heat generated from the driving unit 150 is discharged (second discharged) through a heat dissipation path leading to the second adhesive member 157, the first adhesive member 156 and the cover bottom 171. In addition, some of the heat generated from the driving unit 150 is discharged (third discharged) by the fourth adhesive member 159.

In addition, in the fifth embodiment, since the flexible circuit board 155 is bent twice and the printed circuit board 135 is attached to its end, the distance from one end of the display panel module to the other end of the printed circuit board 135 is summed ( L2) is similar to the third embodiment. Accordingly, in the fifth embodiment, the battery area in which the battery is installed can also be wider than in the experimental example.

The fifth embodiment has an effect of not only having the structural requirements of the narrow bezel for slimming the display panel 160, but also improving the heat dissipation problem of the driving unit 150, noise problems such as EMI, and external shock problems. There is. In addition, the fifth embodiment has an effect of further improving the heat dissipation problem of the driving unit 150 and noise problems such as EMI by the function of the adhesive member attached to the rear surface of the printed circuit board.

On the other hand, in the present invention, the first to fifth embodiments have been described separately. However, those skilled in the art may further configure other embodiments by combining the first to fifth embodiments, and the present invention may not be interpreted as an example unit, but may be interpreted as a combination thereof.

Meanwhile, in the present invention, the first to fourth adhesive members described in the first to fifth embodiments may be manufactured to correspond to the sizes of the flexible circuit board or the printed circuit board. In the case of the first to fourth adhesive members, since they are used to improve noise problems such as heat dissipation of the driving unit (prevention of overheating) and EMI, the larger and thicker the better. However, depending on the experiment, they are optimized for heat dissipation and noise improvement and can be formed at an appropriate level to minimize the increase in unit cost.

As described above, the present invention has an effect of not only having a structural requirement of a narrow bezel for slimming a display panel, but also improving a heat dissipation problem (prevention of overheating) of a driving unit, a noise problem such as EMI, and an external shock problem. In addition, in the present invention, since the flexible circuit board is bent twice or more, the width of the lower bezel of the display panel module can be further narrowed, and the battery area in which the battery is installed (corresponding to the size occupied by the third adhesive member, the flexible circuit board and the printed circuit Because it is possible to reduce the size of the substrate) there is an effect that can be widened.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the technical configuration of the present invention described above is in other specific forms without changing the technical spirit or essential features of the present invention by those skilled in the art. It will be appreciated that it can be implemented. Therefore, the embodiments described above are illustrative in all respects and should be understood as non-limiting. In addition, the scope of the present invention is indicated by the claims to be described later rather than the detailed description. In addition, all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention.

130: timing control unit 140: gate driving unit
150: data driving unit 160: display panel
170: backlight unit 155: flexible circuit board
135: printed circuit board 156: first adhesive member
157: second adhesive member 158: third adhesive member
159: fourth adhesive member

Claims (10)

Display panel;
A cover bottom accommodating the display panel;
A flexible circuit board having one end attached to the pad area of the display panel and bent toward the rear surface of the cover bottom as it has at least two bending parts;
A first adhesive member positioned between the rear surface of the cover bottom and the rear surface of the flexible circuit board and attaching and fixing the flexible circuit board to the cover bottom;
A printed circuit board attached to the other end of the flexible circuit board; And
A display device including a driving unit mounted on one surface of the flexible circuit board facing an upper surface of the printed circuit board. The method of claim 1,
A second adhesive member for attaching and fixing the first and second bending portions of the flexible circuit board among the bending portions of the flexible circuit board;
The display device further comprising a third adhesive member positioned between the upper surface of the printed circuit board and the upper surface of the flexible circuit board and attaching and fixing the printed circuit board to the flexible circuit board. The method of claim 1,
The display device further comprising a third adhesive member positioned between the upper surface of the printed circuit board and the upper surface of the flexible circuit board and attaching and fixing the printed circuit board to the flexible circuit board. The method according to claim 2 or 3,
The third adhesive member
A display device comprising: an open part from which a portion corresponding to the driving part is removed to maintain a spaced apart space between the printed circuit board and the flexible circuit board and to attach and fix the printed circuit board to the flexible circuit board. The method of claim 2,
At least one of the first to third adhesive members
A display device comprising a lower adhesive layer, a sheet layer, and an upper adhesive layer, wherein the sheet layer is made of one of graphite, aluminum (Al), and copper (Cu) having excellent thermal conductivity and EMI (electromagnetic wave) shielding ability. The method of claim 1,
Further comprising a fourth adhesive member attached to the rear surface of the printed circuit board,
The fourth adhesive member is made of a single layer, two layers including a fourth lower adhesive layer and a fourth sheet layer, or three layers further including a fourth upper finishing layer positioned on the fourth sheet layer,
The fourth sheet layer is made of one of graphite, aluminum (Al), and copper (Cu) having excellent thermal conductivity and EMI (electromagnetic wave) shielding ability. The method of claim 2,
The flexible circuit board
By bending the first direction, the second direction corresponding to the opposite direction to the first direction, and the first direction three times,
A first bending portion having a digut (⊂) shape surrounding a portion and side surfaces of the display surface (lower substrate) of the display panel and the rear surface of the first adhesive member,
A second bending portion in a reversed (⊃) shape surrounding the upper, side and rear surfaces of the second adhesive member,
A display device comprising: an upper surface of the third adhesive member, the third adhesive member, a side surface of the printed circuit board, and a third bending portion having a digut (⊂) shape surrounding a rear surface of the printed circuit board. The method of claim 3,
The flexible circuit board
By bending the first direction and the second direction corresponding to the opposite direction of the first direction twice,
A first bending portion having a digut (⊂) shape surrounding a portion and side surfaces of the display surface (lower substrate) of the display panel and the rear surface of the first adhesive member,
A display device including a second bending portion having an inverted shape (⊃) that surrounds an upper surface and a side surface of the third adhesive member and is positioned on a part of the upper surface of the printed circuit board. The method of claim 4,
The third adhesive member
The display device further comprises a plurality of ventilation paths formed around the open portion. The method of claim 2,
The cover bottom is
A display device made of a metal material to form a heat dissipation path through which heat generated from the driving unit is transferred to the cover bottom through the first adhesive member or the first and second adhesive members to form a radiating path.

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