KR20170080036A

KR20170080036A - Liquid crystal display device

Info

Publication number: KR20170080036A
Application number: KR1020150191196A
Authority: KR
Inventors: 권원주
Original assignee: 엘지디스플레이 주식회사
Priority date: 2015-12-31
Filing date: 2015-12-31
Publication date: 2017-07-10

Abstract

A liquid crystal display device is provided. The liquid crystal display device includes a display panel, a conductive layer disposed on the lower surface of the display panel, a flexible printed circuit board disposed on the upper surface of the display panel, a conductive layer electrically connected to the pad of the flexible printed circuit board, A guide panel disposed below the conductive member, a display panel, and a guide panel disposed below the conductive layer, the guide panel including a groove at a position corresponding to the connection member, and a display panel, Shielding tape.
Therefore, in order to reduce the noise of the touch sensor, the liquid crystal display device according to an embodiment of the present invention may include a shielding layer to overlap the connection member for electrically connecting the conductive layer and the display panel when the conductive layer is provided on the lower surface of the display panel, The leakage of light between the display panel and the backlight unit can be suppressed and the display quality of the liquid crystal display device can be improved.

Description

[0001] LIQUID CRYSTAL DISPLAY DEVICE [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a liquid crystal display device, and more particularly, to a liquid crystal display device that suppresses the occurrence of light leakage generated between a display panel and a backlight unit.

A liquid crystal display (Liquid Crystal Display) is one of the most widely used display devices, and is a display device for adjusting the amount of light transmitted by applying voltage to electrodes to rearrange liquid crystal molecules in the liquid crystal layer.

A general liquid crystal display device includes a liquid crystal display panel for displaying an image and a backlight unit for providing light to the liquid crystal display panel. The backlight unit includes a light source portion, a light guide plate, a guide panel, and a light shielding tape.

In particular, the light shielding tape is disposed corresponding to the light source portion. Accordingly, the light shielding tape functions to minimize deterioration of image quality of the liquid crystal display device due to leakage of light emitted from the light source portion.

Meanwhile, the display panel is electrically connected to the flexible printed circuit board for signal transmission to the outside.

However, as the display panel is connected to the flexible printed circuit board, the shape of the light-shielding tape may change. For example, there is a case where a part of the light shielding tape is removed due to a connection problem between the flexible printed circuit board and the display panel.

In this case, since the shielding tape is removed, there is a problem that light provided from the light source unit of the backlight unit leaks between the display panel and the backlight unit.

The inventors of the present invention have recognized the problem that light leaks between the display panel and the backlight unit when a part of the light shielding tape is removed when the flexible printed circuit board and the display panel are connected.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a flexible printed circuit board and a display panel in which the area of the light shielding tape corresponding to the connection area between the flexible printed circuit board and the display panel is bent when the flexible printed circuit board and the display panel are connected, A liquid crystal display device capable of suppressing leakage of light provided in a liquid crystal display device to the outside.

It is another object of the present invention to provide a light guiding tape which is formed by forming grooves in a guide panel to bend a light shielding tape bent in a groove of a guide panel when a part of the light shielding tape is bent without being removed, And a liquid crystal display device capable of avoiding interference.

It is another object of the present invention to provide a flexible printed circuit board and bending a light shielding tape disposed so as to correspond to a region where a flexible printed circuit board and a display panel are connected, A liquid crystal display device capable of minimizing the occurrence of cracks in a bonding area of a flexible printed circuit board and a display panel.

The problems of the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

A liquid crystal display according to an embodiment of the present invention is provided. The liquid crystal display device of this embodiment has a display panel, a conductive layer disposed on the lower surface of the display panel, a flexible printed circuit board disposed on the upper surface of the display panel, and a conductive layer electrically connected to the pad of the flexible printed circuit board, A guide panel disposed below the display panel and the conductive layer and having a groove at a position corresponding to the connection member, and a display panel disposed under the conductive layer and overlapping at least a part of the connection member, And a light-shielding tape filling the groove. Accordingly, in order to reduce the noise of the touch sensor, the liquid crystal display device according to an exemplary embodiment of the present invention may include a shielding layer for overlapping a connection member for electrically connecting the conductive layer and the display panel, By arranging the tape, leakage of light between the display panel and the backlight unit can be suppressed, and the display quality of the liquid crystal display device can be improved.

The display panel may include a lower substrate on which the switching elements are disposed and an upper substrate disposed opposite to the lower substrate. The flexible printed circuit board may be disposed on the upper surface of the lower substrate. The flexible printed circuit board may include a touch integrated circuit .

The display panel may further include a touch sensor, and the touch sensor may be an in-cell type configured to be integrated into the display panel.

The conductive layer may be configured to apply a ground voltage to prevent noise from entering the touch sensor.

The conductive layer may be made of Indium Tin Oxide (ITO).

The connecting member may be made of silver (Ag).

And may further comprise a metal pattern made of the same material as the connecting member and contacting the connecting member and the conductive layer.

The guide panel may include a base portion and a side wall portion extending upward from the base portion, and one or more grooves may be disposed on an upper surface of the side wall portion.

The light shielding tape has a ring shape surrounding the display area of the display panel.

The light shielding tape may have a bending area where a first bending mark and a second bending bending mark are formed in a region overlapping the connecting member.

A liquid crystal display according to another embodiment of the present invention is provided. The liquid crystal display device of this embodiment includes a display panel, a flexible printed circuit board disposed on the upper surface of the display panel, a resin layer disposed on the lower surface of the flexible printed circuit board and a part of the lower surface of the display panel, And a guide panel disposed below the display panel, the guide panel having a base portion and a side wall portion, wherein a groove is provided in an upper portion of the side wall portion, and the light shielding tape overlapped with the side wall portion of the light shielding tape The portion can be received in the groove. Accordingly, in the liquid crystal display device according to another embodiment of the present invention, the size of the resin layer disposed on the lower surface of the display panel and the lower surface of the flexible printed circuit board is improved by improving the structure of the light- It is possible to minimize a crack that may occur between the panel and the flexible printed circuit board.

The display panel and the flexible printed circuit board may be bonded by a conductive adhesive material.

The resin layer may be made of a photocurable resin.

The light shielding tape may have a bending area in which a first bending mark and a second bending mark are formed in a region overlapping the resin layer.

The details of other embodiments are included in the detailed description and drawings.

The liquid crystal display device of the present invention is characterized in that when a connecting member for electrically connecting the flexible printed circuit board and the conductive layer disposed on the display panel is disposed, a bending mark is disposed on the light-shielding tape corresponding to the area where the connecting member is disposed, The area defined by the bending mark is bent and the bent light shielding tape is accommodated in the groove formed in the guide panel so that the light provided in the light source part can be prevented from leaking to the outside.

Further, the liquid crystal display device of the present invention can be configured such that the light-shielding tape includes the bending region, so that the rear surface of the display panel and the resin layer disposed on the back surface of the flexible printed circuit board can be formed to be large, It is possible to minimize the crack that may occur.

The effects according to the present invention are not limited by the contents exemplified above, and more various effects are included in the specification.

1 is a schematic exploded perspective view illustrating a liquid crystal display according to an embodiment of the present invention.
2 is a schematic cross-sectional view taken along line II-II 'of FIG.
3 is a schematic cross-sectional view taken along line III-III 'of FIG.
4 is a schematic exploded perspective view illustrating a liquid crystal display device according to another embodiment of the present invention.
5 is a schematic cross-sectional view taken along line V-V 'of FIG.
6 is a schematic cross-sectional view taken along line VI-VI 'of FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

The shapes, sizes, ratios, angles, numbers, and the like disclosed in the drawings for describing the embodiments of the present invention are illustrative, and thus the present invention is not limited thereto. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Where the terms "comprises", "having", "done", and the like are used in this specification, other portions may be added unless "only" is used. Unless the context clearly dictates otherwise, including the plural unless the context clearly dictates otherwise.

In interpreting the constituent elements, it is construed to include the error range even if there is no separate description.

In the case of a description of the positional relationship, for example, if the positional relationship between two parts is described as 'on', 'on top', 'under', and 'next to' Or " direct " is not used, one or more other portions may be located between the two portions.

It will be understood that when an element or layer is referred to as being on another element or layer, it encompasses the case where it is directly on or intervening another element or intervening another element or element.

Although the first, second, etc. are used to describe various components, these components are not limited by these terms. These terms are used only to distinguish one component from another. Therefore, the first component mentioned below may be the second component within the technical spirit of the present invention.

Like reference numerals refer to like elements throughout the specification.

The sizes and thicknesses of the individual components shown in the figures are shown for convenience of explanation and the present invention is not necessarily limited to the size and thickness of the components shown.

It is to be understood that each of the features of the various embodiments of the present invention may be combined or combined with each other partially or entirely and technically various interlocking and driving is possible as will be appreciated by those skilled in the art, It may be possible to cooperate with each other in association.

Various embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

1 is a schematic exploded perspective view illustrating a liquid crystal display according to an embodiment of the present invention. Referring to FIG. 1, a liquid crystal display 100 according to an embodiment of the present invention includes a display panel 110, a flexible printed circuit board 120, and a backlight unit 130. 1, a pad member of the flexible printed circuit board 120 of the display device 100, a connection member for electrically connecting the flexible printed circuit board 120 and the display panel 110, a display panel 110 The metal pattern, and the overcoat layer disposed on the lower surface of the substrate 100 are omitted.

The display panel 110 is a panel for displaying an image and includes a first substrate 111, a second substrate 112 opposed to the first substrate 111, a first substrate 111 and a second substrate 120 And a liquid crystal layer interposed therebetween. The display panel 110 displays an image by adjusting the transmittance of light emitted from the backlight unit 140. Such a display panel 110 includes a display area DA and a non-display area NDA.

The display area DA is disposed in a region where the first substrate 111 and the second substrate 112 overlap. More specifically, the display area DA is arranged in the central area of the display panel 110. [ In this display area DA, a plurality of gate lines and a plurality of data lines are arranged, and a plurality of pixels defined by a plurality of gate lines and a plurality of data lines are arranged. Each of the plurality of pixels may include a switching element, a pixel electrode, and a common electrode. At this time, the switching element, the pixel electrode, and the common electrode may be disposed on the first substrate 111. However, the present invention is not limited to this, and a switching element, a pixel electrode, and a common electrode may be disposed on the second substrate 112 disposed on the first substrate 111. In the liquid crystal display device 100 according to an embodiment of the present invention, when a switching element disposed in each pixel is turned on by a control signal input from the outside, a data voltage is applied to the pixel electrode, A common voltage is applied and liquid crystal molecules are tilted by a voltage difference between the data voltage and the common voltage to display an image.

The non-display area NDA is arranged so as to have a ring shape surrounding the display area DA. In other words, generally, the first substrate 111 has a larger size than the second substrate 112, and the non-display area NDA is larger than the size of the first substrate 111, which is larger than the second substrate 112 And is disposed outside the display area DA. In this non-display area NDA, a driving circuit for driving a plurality of pixels or the like may be disposed. The flexible printed circuit board 120 is disposed on the non-display area NDA, more specifically, on the end area of the non-display area NDA.

In addition, the display panel 110 may include a touch sensor built in the display panel 110 and integrated therewith. The structure in which the touch sensor is integrated in the display panel 110 is referred to as an in-cell type. Here, the touch sensor may be a capacitive touch sensor. A detailed configuration of the display panel 110 in which the above-described touch sensor is integrated will be described below with reference to FIG.

The flexible printed circuit board 120 is electrically connected to the display panel 110 by a conductive adhesive material. That is, the flexible printed circuit board 120 is disposed on the upper surface of the non-display area NDA of the first substrate 111. The flexible printed circuit board 120 electrically connects the display panel 111 to an external printed circuit board (PCB). Accordingly, the flexible printed circuit board 120 applies a control signal, a data signal or the like inputted from the outside to the display panel 111 or transmits a signal transmitted from the display panel 111 to the printed circuit board. The flexible printed circuit board 120 is provided with a pad portion for electrical connection with the display panel 110 or an external printed circuit board.

Hereinafter, the backlight unit 130 will be described. The backlight unit 130 may include a light shielding tape 131, a light source 132, a light guide plate 133, and a guide panel 134. Further, although not shown, the backlight unit 130 may further include a plurality of optical sheets, a reflector, and the like.

The light shielding tape 131 is disposed between the backlight unit 130 excluding the display panel 110 and the light shielding tape 131. More specifically, the light shielding tape 131 can be disposed along the non-display area NDA, so that the light shielding tape 131 can have a ring shape surrounding the display area DA. The shielding tape 131 is provided with a connection member for electrically connecting the conductive layer disposed to minimize the electric signal interference that may be generated due to the placement of the touch sensor in the display panel 110, The bending mark CM for avoiding the light-shielding tape 131 is disposed by the shape of the connecting member. Here, the bending mark CM may be a cutting mark obtained by cutting a part of the light-shielding tape 131. The bending mark CM includes a first sub bending mark CM1 and a second sub bending mark CM2 disposed apart from the first sub bending mark CM1. The first sub bending mark CM1 and the second sub bending mark CM2 form a pair and the first sub bending mark CM1 and the second sub bending mark CM2, Defines the area BA. In other words, the distance between the first sub-bending mark CM1 and the second sub-bending mark CM2 may be the width of the bending area BA of the light-shielding tape 131. [ At this time, the width of the bending mark CM may correspond to the forming width of the connecting member. A portion of the light-shielding tape 131 defined by the bending mark CM is bent and does not directly contact the connecting member. Here, a part of the light-shielding tape 131 is an area where the light-shielding tape 131 can interfere with or overlap with the connecting member.

The light source unit 132 generates light and irradiates the generated light to the light guide plate 133. The light source 132 is arranged to correspond to one side of the light guide plate 133. 1, the light source unit 132 is disposed on one side of the light guide plate 133, but the present invention is not limited thereto. The light source unit 132 may be disposed directly below the light guide plate 133 have. The light source unit 132 may have a structure in which a plurality of light sources are disposed on a circuit board. At this time, the plurality of light sources may be any one of a light emitting diode (LED), a cold cathode fluorescent lamp (CCFL), and an external electrode fluorescent lamp (EEFL).

The light guide plate 133 is disposed on substantially the same plane as the light source section 132. [ The light guide plate 133 guides the light emitted from the light source unit 132 to be transmitted to the display panel 110. The light guide plate 133 is made of a transparent material. For example, the light guide plate 133 may be made of polymethyl-methacrylate (PMMA), but is not limited thereto, and may be made of various transparent materials capable of guiding light. Also, the light guide plate 133 may be made of a rigid material, but is not limited thereto, and may be made of a flexible material. The light guide plate 133 may be in the form of a flat plate, or a wedge, as shown in Fig.

1, the guide panel 134 has a box shape in which an upper surface is opened, and the other parts of the backlight unit 130, that is, the light source unit 132 and the light guide plate 133 ). The guide panel 134 is disposed to extend upward from the base portion 134b on the outermost surface of the base portion 134b and the base portion 134b on which the light source portion 132 and the light guide plate 133 are disposed, And a side wall part 134w arranged to surround the light guide plate 133 and the light source part 132 accommodated in the light guide part 134b. At this time, the base portion 134b and the side wall portion 134w may be perpendicular to each other. However, the present invention is not limited thereto, and the angle formed between the base portion 151 and the side wall portion 152 of the guide panel 150 may be variously configured according to the design.

The base portion 134b may be made of a metallic material having rigidity, and the light source portion 132 and the light guide plate 133 are disposed as described above. The base portion 134b is not included in the guide panel 134 but is provided under the light guide plate 133 not shown in FIG. And can serve as a reflector base portion 134b to be disposed. In this case, the base portion 134b may be capable of changing the path of the light emitted from the light source portion 132 and traveling to the lower side of the light guide plate 133. [

The side wall portion 134w may be made of a non-metallic material having rigidity and is disposed along the edge of the base portion 134b. In the present embodiment, the base portion 134b and the side wall portion 134w are made of different materials. However, the present invention is not limited thereto and may be made of the same material. Further, the side wall portion 134w may have white or black. For example, when the side wall portions 134w are arranged in white, the light is reflected to increase the light efficiency of the liquid crystal display device. When the side wall portions 134w are arranged in black, To increase efficiency. The side wall portion 134w is disposed to have a top surface 134t and a top surface 134t of the side wall portion 134w can receive a part of the light shielding tape 131 defined by the bending mark CM and bent A groove R is disposed. At this time, a plurality of grooves R may be disposed, and the number of grooves R may be proportional to the number of bending areas BA disposed on the shield tape 131. [

Hereinafter, referring to FIG. 2 and FIG. 3 together for a more detailed description of the structure of the liquid crystal display device 100 according to an embodiment of the present invention.

2 is a schematic cross-sectional view taken along line II-II 'of FIG. 3 is a schematic cross-sectional view taken along line III-III 'of FIG. In FIGS. 2 and 3, the second substrate 112 of the display panel 110 is not shown for convenience of explanation.

2 and 3, a conductive layer 170, a metal pattern 180, and an overcoat layer 190 are sequentially stacked on a lower surface of the first substrate 111 of the display panel 110.

The conductive layer 170 is disposed to cover the lower surface of the first substrate 111. That is, the conductive layer 170 is disposed to correspond to the display area DA and the non-display area NDA of the first substrate 111 as a whole. The conductive layer 170 provides an equal potential surface on the lower surface of the first substrate 111, thereby minimizing the interference of various electrical signals and the introduction of noise. To this end, the conductive layer 170 may be electrically connected to the ground wiring of the system and grounded. That is, the conductive layer 170 can provide a smooth discharge path to the display panel 110. At this time, the predetermined electrical signal applied to the conductive layer 170 is a ground voltage. The conductive layer 170 may be formed of indium-tin oxide (ITO) so as to have a high electrical conductivity while having light transmission properties.

The metal pattern 180 is disposed along the edge of the conductive layer 170. That is, the metal pattern 180 is disposed corresponding to the non-display area NDA of the first substrate 111 and may have a ring shape. Meanwhile, since the conductive layer 170 has a transparent optical characteristic, the thickness of the conductive layer 170 must be increased to lower the sheet resistance of the conductive layer 170 itself. The thickness of the conductive layer 170 is thicker There is a limit to increase the thickness of the conductive layer 170 because the light transmittance of the ground can be lowered. Thus, the metal pattern 180 is disposed so that the conductive layer 170 is uniformly equipotentialized in a short time in all areas, without deteriorating the light transmittance of the conductive layer 170. The metal pattern 180 may be made of silver (Ag). The reason why the metal pattern 180 is made of silver (Ag) is that the conductive layer 170 is made of indium-tin oxide as described above. However, the metal pattern 180 is made of silver (Ag) The metal pattern 180 may have a lower sheet resistance than the sheet resistance of the conductive layer 170 because silver (Ag) has lower sheet resistance than indium-tin oxide. The metal pattern 180 is electrically connected to the conductive layer 170 and the pad portion 121 of the flexible printed circuit board 120, that is, the flexible printed circuit board 120 disposed on the flexible printed circuit board 120 Connect. The electrical signal can be quickly transmitted by electrically connecting the conductive layer 170 to the pad portion 121 of the flexible printed circuit board 120 through the metal pattern 180. The conductive layer 170 It can become equipotential surface more quickly and uniformly.

The connection member 160 electrically connects the conductive layer 170 and the pad portion 121 of the flexible printed circuit board 120 together with the metal pattern 180. At this time, a touch integrated circuit may be disposed on the flexible printed circuit board 120, and accordingly, the pad unit 121 may be a pad for transmitting touch signals. The connection member 160 may be made of the same material as the metal pattern 180. That is, it may be composed of silver (Ag). As described above, when the metal pattern 180 and the connecting member 160 are made of the same material, the contact resistance at the interface formed between the metal pattern 180 and the connecting member 160 can be reduced.

On the other hand, as shown in Fig. 2, the connecting member 160 is arranged so as to have a semicircular shape when viewed in section. That is, the connecting member 160 has a semi-circular shape protruding from the lower surface of the first substrate 111 or the lower surface of the flexible printed circuit board 120. Due to such a shape of the connecting member 160, in a conventional in-cell type liquid crystal display device, a part of the light-shielding tape disposed in an area where a light-shielding tape overlaps with a part of the light- Removed to avoid interference and a connecting member was placed. Accordingly, there has been a problem in that light provided in the light source portion leaks to the outside in the region where the light shielding tape is removed in the related art.

2, a liquid crystal display 100 according to an embodiment of the present invention includes a light shielding tape 131 in which a light shielding tape 131 and a connection member 160 are overlapped without removing the light shielding tape 131, A bending mark CM is formed on a part of the light guide tape 131 and then a part of the light shielding tape 131 defined by the bending mark CM, that is, the bending area BA is bent to have an 'S' (R) disposed in the groove (134). At this time, the recessed depth of the groove R disposed on the guide panel 134 from the upper surface 134t may be equal to the thickness of the shielding tape 131. [ However, the present invention is not limited to this, and the thickness of the groove R disposed in the guide panel 134 may be thicker than the thickness of the shielding tape 131. [ For example, the depth at which the groove R disposed in the guide panel 134 is recessed from the upper surface 134t is not limited to the depth of the light shielding tape 131, . When the recessed depth from the upper surface 134t of the groove R disposed in the guide panel 134 is arranged to accommodate a part of the light shielding tape 131 and the connecting member 160, And the upper surface 134t of the guide panel 134 can be disposed closer to each other than the conventional one.

The overcoat layer 190 is disposed under the conductive layer 170 and the metal pattern 180 to cover the conductive layer 170 and the metal pattern 180 disposed on the lower surface of the first substrate 111 of the display panel 110. [ It plays a protective role.

3, the upper surface 134t of the side wall portion 134w of the guide panel 134 corresponding to the other area of the light-shielding tape 131 where the bending area BA is not defined in the light-shielding tape 131 The groove R is not disposed. That is, since the area not defined by the bending mark CM in the light-shielding tape 131 is an area where the connecting member 160 is not disposed, it is not necessary to bend the light-shielding tape 131, The grooves R are not disposed on the upper surface 134t of the side wall portion 134w.

The liquid crystal display device 100 according to an embodiment of the present invention is configured such that the touch sensor is integrated into the display panel 110 to prevent noise from being introduced into the lower surface of the display panel 110 with the touch sensor A connection member 160 for electrically connecting the conductive layer 170 and the flexible circuit board 120 is disposed. The light emitted from the light source unit 132 can be prevented from leaking to the outside by bending and arranging a part of the light shielding tape 131 disposed overlapping with the connecting member 160. [

The liquid crystal display 100 according to an embodiment of the present invention as described above is configured such that the light shielding tape 131 and the connecting member 160 are disposed to overlap with each other and the upper surface of the side wall portion 134w of the guide panel 134 It is possible to prevent interference between the shielding tape 131 and the connecting member 160 by disposing the grooves R capable of receiving the shielding tape 131 in the groove 134t.

4 is a schematic exploded perspective view illustrating a liquid crystal display device according to another embodiment of the present invention. 5 is a schematic cross-sectional view taken along line V-V 'of FIG. 6 is a schematic cross-sectional view taken along line VI-VI 'of FIG. The liquid crystal display device 200 shown in Figs. 4 to 6 is different from the liquid crystal display device 100 shown in Figs. 1 to 3 only in the relationship between the display panel 210 and the flexible printed circuit board 220 , The other components are substantially the same. Therefore, redundant description of the same components is omitted.

4 to 6, the display panel 210 of the liquid crystal display device 200 according to another embodiment of the present invention is a panel in which the touch sensor is not incorporated. 1 to 3 are formed on the lower surface of the first substrate 211 of the display panel 210 of the liquid crystal display device 200 according to another embodiment of the present invention The conductive layer, the metal pattern, and the overcoat layer are not disposed.

The flexible printed circuit board 220 is disposed on the upper surface of the first substrate 211 of the display panel 210. At this time, the flexible printed circuit board 220 is bonded to the first substrate 211 by the conductive adhesive material 270. At this time, the flexible printed circuit board 220 is disposed corresponding to the non-display area NDA of the first substrate 211.

The liquid crystal display device 200 according to another embodiment of the present invention may include a first substrate 211 and a second substrate 211 to prevent cracks from being generated in the bonding area with the first substrate 211 due to bending of the flexible printed circuit board 220, 211 and the resin layer 260 are disposed on the lower surface of the flexible printed circuit board 220. More specifically, the resin layer 260 is disposed so as to cover a portion of the lower surface of the flexible circuit board 220 and a portion of the lower surface of the first substrate 211. The resin layer 260 can improve adhesion between the display panel 210 and the flexible printed circuit board 220. At this time, the resin layer 260 may have a flexible property and may include any one of a photo-curing resin and a thermosetting resin.

The adhesion between the first substrate 211 and the flexible printed circuit board 220 is increased as the resin layer 260 is arranged to be larger and thicker than the adhesive strength between the first substrate 211 and the flexible printed circuit board 220 Can be further improved. However, in the related art, since the shielding tape 131 is disposed between the first substrate 211 and the guide panel 150, the size of the resin layer 260 can not be increased.

However, the liquid crystal display device 200 according to another embodiment of the present invention forms the bending mark CM on a part of the light-shielding tape 131 overlapping the resin layer 260, The bending area BA is defined and the bending area BA of the light shielding tape 131 defined by the bending mark CM is bent in the shape of an 'S' The resin layer 260 can be disposed larger than the conventional one by accommodating the resin layer 260 in the grooves R disposed on the upper surface 134t of the side wall portion 134w of the side walls 134w. At this time, the width of the bending area BA of the light-shielding tape 131 may correspond to the formation width of the resin layer 260.

The liquid crystal display 200 according to another embodiment of the present invention may be configured such that a part of the light shielding tape 131 overlapping the flexible printed circuit board 220 is bent and the bent light shielding tape 131 is bent, The resin layer 260 can be arranged in a large size by being accommodated in the grooves R disposed on the upper surface 134t of the side wall portion 134w of the guide panel 134, The adhesion of the substrate 220 can be further enhanced.

Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, it is to be understood that the present invention is not limited to those embodiments and various changes and modifications may be made without departing from the scope of the present invention. . Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

100, 200: liquid crystal display
110, 210: display panel
111, 211: a first substrate
112, 212: second substrate
120, 220: Flexible printed circuit board
130: Backlight unit
131: Shading tape
132:
133: light guide plate
134: Guide panel
134b:
134w:
134t: upper surface of the side wall portion
160:
170: conductive layer
180: metal pattern
190: overcoat layer
260: resin layer
CM: Bending mark
R: Home

Claims

Display panel;
A conductive layer disposed on a lower surface of the display panel;
A flexible printed circuit board disposed on an upper surface of the display panel;
A connection member electrically connecting the pad of the flexible printed circuit board to the conductive layer and protruding to the lower side of the display panel;
A guide panel disposed below the display panel and the conductive layer and having a groove at a position corresponding to the connection member; And
And a light shielding tape disposed below the display panel and the conductive layer and overlapping at least a part of the connection member and filling the groove.

The method according to claim 1,
Wherein the display panel includes a lower substrate on which a switching element is disposed and an upper substrate opposed to the lower substrate,
Wherein the flexible printed circuit board is disposed on an upper surface of the lower substrate,
Wherein the flexible printed circuit board is provided with a touch integrated circuit.

3. The method of claim 2,
Wherein the display panel further comprises a touch sensor,
Wherein the touch sensor is an in-cell type configured to be integrated into the display panel.

The method according to claim 1,
Wherein the conductive layer is configured to apply a ground voltage to prevent noise from flowing into the touch sensor.

5. The method of claim 4,
Wherein the conductive layer is made of ITO (Indium Tin Oxide).

The method according to claim 1,
Wherein the connecting member is made of silver (Ag).

The method according to claim 6,
And a metal pattern which is made of the same material as the connecting member and is in contact with the connecting member and the conductive layer.

The method according to claim 1,
Wherein the guide panel includes a base portion and a side wall portion extending upward from the base portion,
And the groove is disposed on the upper surface of the side wall portion.

The liquid crystal display device according to claim 1, wherein the light-shielding tape has a ring shape surrounding the display area of the display panel.

10. The method of claim 9,
The shielding tape
And a bending region in which a first bending mark and a second bending mark are formed in an area overlapping with the connecting member.

Display panel;
A flexible printed circuit board disposed on an upper surface of the display panel;
A resin layer disposed to cover a part of a lower surface of the flexible printed circuit board and a part of a lower surface of the display panel;
A shielding tape disposed on a lower surface of the display panel and partially overlapping the resin layer; And
And a guide panel disposed below the display panel and having a base portion and a side wall portion,
At least one groove is provided on the upper portion of the side portion,
And a portion of the light-shielding tape overlapping the side wall portion is housed in the groove.

12. The method of claim 11,
Wherein the display panel and the flexible printed circuit board are bonded by a conductive adhesive material.

13. The method of claim 12,
Wherein the resin layer comprises a photocurable resin.

14. The method of claim 13,
Wherein the light shielding tape has a bending area in which a first bending mark and a second bending mark are formed in an area overlapping the resin layer.