KR20180025526A - Liquid crystal display device - Google Patents

Abstract

According to the present invention, a liquid crystal display device comprises: a liquid crystal display panel; a plurality of optical sheets arranged under the liquid crystal display panel, and including a first optical sheet and a second optical sheet arranged on the first optical sheet and having a first open hole for partially exposing the first optical sheet; a light guide plate arranged under the optical sheets; a guide panel arranged between the liquid crystal display panel and the optical sheets, and having a panel support unit for supporting the edge of the liquid crystal display panel from the bottom; and an adhesive member arranged between the optical sheets and the panel support unit to mutually fixing the optical sheets and the panel support unit, and including a first surface attached to a rear surface of the panel support unit and a second surface partially attached to the second optical sheet and partially attached to the first optical sheet exposed by the first open hole.

Description

[0001] LIQUID CRYSTAL DISPLAY DEVICE [0002]

The present invention relates to a liquid crystal display device including a backlight unit.

The liquid crystal display device is used as a display device in various fields such as a portable computer such as a notebook PC, an office automation device, an audio / video device, an indoor / outdoor advertisement display, and a vehicle display. The liquid crystal display device can be divided into a reflective type, a semi-transmissive type, a transmissive type, and the like. A transflective or transmissive liquid crystal display device controls an electric field applied to a liquid crystal layer to display an image by controlling light incident from a backlight unit (BLU) according to a data voltage.

A fluorescent lamp such as a cold cathode fluorescent lamp (CCFL) has been used as a light source of a backlight unit. Recently, however, a light emitting diode (LED) .

Automotive displays are growing in size and increasing in quantity per vehicle. In addition to navigation, vehicle displays are also being applied as a driving support interface. Automotive displays are expanding coverage as instruments for instrument panels, driver warnings, and driving aids. In addition, a liquid crystal display (LCD) device is also applied to a head-up display (HUD) device that projects a vehicle speed, a remaining amount of fuel, navigation information, and the like in a graphic window on the window immediately before the driver. Liquid-crystal displays are being used for Rear-Seat Entertainment (RSE) systems to enjoy DVD movies and games in the back seat of a vehicle.

Vehicle displays are required to have visibility even in solar light, so that they are required to have a higher brightness than those of other displays, and are required to have reliability in automotive temperature conditions and vibration conditions.

A liquid crystal display device includes a liquid crystal display panel and a backlight unit. The backlight unit has a structure in which a light source is disposed so as to face the side face of the light guide plate and a plurality of optical sheets are disposed between the liquid crystal display panel and the light guide plate. The liquid crystal display panel and the backlight unit are assembled together with case members for fixing them, and are implemented as a liquid crystal module (LCM). The case member may include a guide panel, a cover bottom, a case top, and the like.

The light guide plate and the optical sheets accommodated in the case member can expand and contract or move in position due to external factors such as temperature change, humidity change, external impact, and vibration. When the light guide plate and the optical sheets are moved and damage occurs, the optical characteristics of the liquid crystal display device may be changed. This causes image quality defects, which deteriorates the product reliability of the liquid crystal display device.

The present invention relates to a liquid crystal display device capable of preventing a flow of a light guide plate and optical sheets that may occur due to external factors such as a temperature change, a humidity change, an external impact, and a vibration, And to provide the above-mentioned objects.

A liquid crystal display device according to the present invention includes a liquid crystal display panel, a plurality of optical sheets, a light guide plate, a guide panel, and an adhesive member. A plurality of optical sheets are disposed under the liquid crystal display panel. The light guide plate is disposed under the optical sheets. The guide panel has a panel support portion disposed between the liquid crystal display panel and the optical sheets to support the edge of the liquid crystal display panel from below. The adhesive member is disposed between the optical sheets and the panel support to fix the optical sheets and the panel support to each other. The optical sheets include a first optical sheet and a second optical sheet. The second optical sheet is disposed on the first optical sheet and has a first open hole for exposing a part of the first optical sheet. The bonding member includes a first surface and a second surface. The first side is bonded to the back side of the panel support. The second surface is adhered to a part of the second optical sheet and is adhered to a part of the first optical sheet exposed through the first open hole.

The first optical sheet may include a second open hole exposing a part of the light guide plate. The second surface of the adhesive member is adhered to a part of the second optical sheet, adhered to a part of the first optical sheet exposed through the first open hole, and adhered to a part of the light guide plate exposed through the second open hole have.

The back surface of the panel support may include an inclined surface having a predetermined inclination, and the first surface of the adhesive member may be adhered to the inclined surface.

At least a part of the first open hole may overlap with the second open hole.

The first open hole can expose the second open hole.

The first open hole may have a larger hole area than the second open hole.

The liquid crystal display device according to the present invention may further include a light source for emitting light to the light guide plate. The bonding member may be disposed at the light-incoming portion where the light source is located.

The first open hole is located on the side surface of the optical sheet, and a portion of the side surface of the optical sheet may be removed.

The first open hole is spaced apart from the side surface of the optical sheet by a predetermined distance and may have a shape in which an inner portion of the optical sheet is penetrated.

The first open hole may be a planar shape including a circle, an ellipse, and a polygon.

The present invention prevents the flow of the light guide plate and the optical sheets, which may occur due to external factors such as temperature change, humidity change, external impact, and vibration, and prevents damage due to the flow of the light guide plate and the optical sheets. can do. In addition, the present invention can reduce the noise generated by the flow of the light guide plate and the optical sheets.

Furthermore, the present invention can prevent the optical characteristics of the liquid crystal display device from varying due to damage to the light guide plate and the optical sheets. Thus, the present invention can provide a liquid crystal display device in which product reliability is improved by maintaining image quality.

The adhesive member according to the present invention can perform the function of preventing the direct contact between the panel support portion of the guide panel and the optical sheet and the function of buffering the force by which the panel support portion presses the optical sheet due to external factors. Thus, the present invention can prevent damage to the optical sheets due to interference with other instruments.

It is not necessary for the present invention to additionally include a separate mechanism for preventing the flow of the optical sheets and the light guide plate. Accordingly, since it is not necessary to secure a separate space for further providing the fixed mechanism, the degree of freedom of design in the same space can be improved. Further, since there is no need for an additional process for providing a fixed mechanism, there is an advantage in that it is possible to prevent a decrease in yield and an increase in manufacturing cost due to the addition of a process.

1 is an exploded perspective view of a liquid crystal display device according to the present invention.
2 is a cross-sectional view taken along line I-I 'of FIG.
3 is a cross-sectional view taken along line II-II 'of FIG.
4 is a view for explaining the positional relationship of the optical sheets and the positional relationship of the open holes provided in the optical sheets.
5 is a view for explaining a positional relationship of an adhesive member adhered to a panel support portion of a guide panel.
6 to 9 are views for explaining the shape and positional relationship of the open holes provided in the optical sheets.

A manufacturing method of a liquid crystal display device of the present invention is a manufacturing method of a liquid crystal display device including a step of cleaning a substrate of a liquid crystal display panel, a step of patterning a substrate, an alignment film forming / rubbing step, a step of adhering a substrate and dropping a liquid crystal, a driving circuit mounting step, And the like.

The substrate cleaning process removes contaminants on the surfaces of the upper substrate and the lower substrate of the liquid crystal display panel with a cleaning liquid. The substrate patterning process includes forming and patterning various thin film materials such as signal lines including a data line and a gate line, a thin film transistor (TFT), and a pixel electrode on a lower substrate, a step of forming a black matrix, A filter, and a common electrode, and patterning the thin film material. In the alignment film forming / rubbing process, an alignment film is applied on substrates and the alignment film is rubbed with a rubbing film or optically aligned. Through the series of processes, the lower substrate of the liquid crystal display panel is provided with data lines to which a video data voltage is supplied, gate lines that intersect the data lines and are supplied with scan signals, that is, gate pulses sequentially, Pixels and TFT arrays including TFTs formed at intersections of lines, pixel electrodes of liquid crystal cells connected to TFTs, and storage capacitors are formed. The shift register of the gate drive circuit for generating the scan signal can be formed simultaneously with the pixel and the TFT array in the substrate patterning process. A black matrix, a color filter, and a common electrode are formed on the upper substrate of the liquid crystal display panel. The common electrode is formed on the upper substrate in a vertical electric field driving method such as a TN (Twisted Nematic) mode and a VA (Vertical Alignment) mode and is driven by a horizontal electric field drive such as an In Plane Switching (IPS) mode and a Fringe Field Switching Type pixel electrode and the lower substrate. A polarizing plate and a polarizing plate protective film are attached to the upper substrate and the lower substrate, respectively.

The liquid crystal dropping and substrate bonding process draws a sealant on one of the upper and lower substrates of a liquid crystal display panel and drops liquid crystal on another substrate. When the ultraviolet light source is irradiated on the ultraviolet curable sealant through the upper substrate or the lower substrate of the liquid crystal display panel, the sealant is cured and the upper substrate and the lower substrate are bonded together with the liquid crystal layer interposed therebetween.

The driving circuit mounting process mounts an integrated circuit (IC) of a data driving circuit on a lower substrate of a liquid crystal display panel using a COG (Chip On Glass) process, a COF (Chip On Film) process, or the like. The gate drive circuit may be formed directly on the lower substrate of the liquid crystal display panel as described above, or may be attached on the lower substrate by the COF process in the drive circuit mounting process. Subsequently, the driving circuit mounting process connects an integrated circuit (IC) and a printed circuit board (PCB) with a flexible printed circuit board (FPC) or a flexible flat cable (FFC).

The assembling process of the backlight unit connects the wiring to the light source and connects it to the light source driving circuit. The assembling process of the liquid crystal module assembles a liquid crystal display panel and a backlight unit, which are mounted with a driving circuit, into a liquid crystal module by using a guide panel, a cover bottom, and a case top.

A method of manufacturing a liquid crystal display device according to an embodiment of the present invention may further include an inspection step and a re-peeling step. The inspection process includes an inspection for an integrated circuit, a signal wiring such as a data line and a gate line formed on the lower substrate, an electrical inspection for detecting defects of the TFT and the pixel electrode, an electrical inspection performed after the substrate adhesion and liquid crystal dropping process, And a lighting inspection for detecting a failure of the liquid crystal module by lighting the backlight unit of the liquid crystal module. The repair process repairs signal wiring defects and TFT defects that are determined to be repairable by the inspection process.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Like reference numerals throughout the specification denote substantially identical components. In the following description, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. In describing the various embodiments, the same components are represented at the outset and may be omitted thereafter.

Terms including ordinals, such as first, second, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another.

1 is an exploded perspective view of a liquid crystal display device according to the present invention. 2 is a cross-sectional view taken along line I-I 'of FIG. 3 is a cross-sectional view taken along line II-II 'of FIG. 4 is a view for explaining the positional relationship of the optical sheets and the positional relationship of the open holes provided in the optical sheets. 5 is a view for explaining a positional relationship of an adhesive member adhered to a panel support portion of a guide panel.

1 and 2, the liquid crystal display device of the present invention includes a liquid crystal display panel (PNL) and a backlight unit disposed under the liquid crystal display panel (PNL). The liquid crystal display panel PNL includes an upper substrate, a lower substrate, and a liquid crystal layer interposed between the upper substrate and the lower substrate, as described above. The liquid crystal layer may be implemented in at least one of various liquid crystal modes.

The backlight unit is provided under the liquid crystal display panel (PNL) and irradiates light to the back surface of the liquid crystal display panel (PNL). The backlight unit includes a light source LS and a light guide plate LGP, and at least one optical sheet (OPS). The light supplied from the light source LS to the light incidence surface of the light guide plate LGP is converted into the surface light source LS and emitted to the front surface of the light guide plate LGP, (OPS) while being uniformly irradiated onto the back surface of the liquid crystal display panel (PNL).

The light source LS may include at least one light source LS of a lamp such as a light emitting diode (LED), a cold cathode fluorescent lamp (CCFL), and an external electrode fluorescent lamp (EEFL) . ≪ / RTI > The light source LS irradiates light to the side surface of the light guide plate LGP while facing at least one side (or the light entrance surface) of the light guide plate LGP. The light guide plate (LGP) is a plate formed of transparent plastic, for example, polymethly methacrylate (PMMA). The light guide plate LGP is a plate material in which light in the form of a point light source LS or a light source LS, .

The optical sheets OPS include one or more prism sheets and one or more diffuser sheets to diffuse the light incident from the light guide plate LGP and to reflect light incident on the light incident surface of the liquid crystal display panel PNL To refract the path of the light at an angle perpendicular to the light path.

The optical sheets OPS may include first through third optical sheets SH1, SH2, and SH3. In one example, the first optical sheet SH1 may be a diffusion sheet, the second optical sheet SH2 may be a prism sheet, and the third optical sheet SH3 may be a multilayer optical film MOF. However, the present invention is not limited thereto. Hereinafter, for convenience of explanation, the case where the optical sheets OPS include the first through third optical sheets SH1, SH2, and SH3 will be described as an example.

Under the light guide plate LGP, a reflection sheet REF for reflecting light incident from the light guide plate LGP and increasing the efficiency of light incident on the liquid crystal display panel PNL may be disposed. The reflective sheet REF can be adhered to the cover bottom CB.

The liquid crystal display panel (PNL) and the backlight unit are assembled together with a cover bottom (CB) guide panel (GP), a case top (CT) .

The cover bottom CB is formed in a "C " shape whose cross section has at least one bent portion. The cover bottom CB includes a horizontal portion HP and a vertical portion VP. The horizontal portion HP is arranged to face the back surface of the backlight unit so as to face the back surface of the backlight unit. The vertical part VP extends from the horizontal part HP and is arranged to face the side surface of the backlight unit so as to face the side surface of the backlight unit. The vertical part VP extends from one end of the horizontal part HP to the front direction. That is, the vertical part VP has a shape protruding from the horizontal part HP in the front direction. A backlight unit including a light source LS, a light guide plate LGP, at least one optical sheet OPS, and the like is accommodated in the inner space provided by the horizontal portion HP and the vertical portion VP.

The cover bottom CB may include a material having a high thermal conductivity and a high rigidity so as to smoothly discharge the heat from the driving circuit and the light source LS to the outside. As an example, the cover bottom CB may be made of aluminum, aluminum nitride (AlN), electrogalvanized steel sheet (EGI), stainless steel (SUS), galvalume (SGLC), aluminum plated steel (aka ALCOSTA), tin plated steel And the like. Further, such a metal plate may be coated with a high conductivity material for promoting heat transfer.

The guide panel GP is disposed below the liquid crystal display panel PNL. The guide panel GP is provided between the liquid crystal display panel PNL and the backlight unit and includes a panel support portion SP for supporting the edge of the liquid crystal display panel PNL from below. The panel support SP is provided between the liquid crystal display panel PNL and the optical sheet OPS to maintain a constant distance between the liquid crystal display panel PNL and the optical sheet OPS.

The guide panel GP may have the shape of a rectangular frame having a through hole. The guide panel GP can be made of a plastic material that can be molded into a mold such as polycarbonate.

The liquid crystal display panel PNL and the guide panel GP can be fixed to each other by an adhesive layer (LSA). The adhesive layer LSA is interposed between the edge of the liquid crystal display panel PNL and the panel support SP of the guide panel GP. The adhesive layer LSA can perform a function of restricting and restraining the mutual movement of the liquid crystal display panel PNL and the guide panel GP and a function of buffering the external force provided. Further, the adhesive layer (LSA) can function as a light shielding member by including a light shielding material in order to prevent light from leaking to the edge of the liquid crystal display panel (PNL).

The case top (CT) is disposed so as to surround the side surfaces of the guide panel (GP) and the cover bottom (CB). The case top may be secured to the guide panel GP and / or the cover bottom CB by a screw or screwless fastening method. The case top (CT) can be made of a metal plate material such as electro galvanized steel sheet (EGI), stainless steel (SUS), galvalume (SGLC), aluminum plated steel plate (aka ALCOSTA), tin plated steel plate (SPTE)

3, an adhesive member DT is interposed between the panel support SP of the guide panel GP and the optical sheets OPS. The adhesive member DT may be a double side tape. The adhesive member DT is disposed between the panel support SP and the optical sheets OPS of the guide panel GP to fix the panel support SP and the optical sheets OPS to each other.

The adhesive member DT includes a first surface F1 and a second surface F2 which are opposed to each other. The first surface F1 of the adhesive member DT is adhered to the panel supporting portion SP of the guide panel GP. The second surface F2 of the adhesive member DT is bonded to at least a part of the optical sheets OPS, respectively. The adhesive member DT is fixed to the panel supporting portion SP to confine and restrict the movement of the optical sheets OPS and / or the LGP LGP.

The optical sheets OPS may include a first optical sheet SH1, a second optical sheet SH2, and a third optical sheet SH3 sequentially stacked. The first optical sheet SH1 includes a first open hole OH1 exposing one side edge of the light guide plate LGP.

The second optical sheet SH2 includes a second open hole OH2 exposing one side edge of the first optical sheet SH1. The second open hole OH2 exposes a part of the first optical sheet SH1 and a part of the light guide plate LGP exposed by the first open hole OH1.

The third optical sheet SH3 includes a third open hole OH3 exposing one side edge of the second optical sheet SH2. The third open hole OH3 is formed by a part of the second optical sheet SH2 and a part of the first optical sheet SH1 exposed by the second open hole OH2 and a part of the first optical sheet SH1 exposed by the first open hole OH1 Thereby exposing a part of the exposed light guide plate (LGP).

The second surface F2 of the adhesive member DT is a part of the third optical sheet SH3, a part of the second optical sheet SH2 exposed by the third open hole OH3, A part of the first optical sheet SH1 exposed by the first open hole OH1 and a part of the light guide plate LGP exposed by the first open hole OH1. Thus, the adhesive member DT fixed to the panel support portion SP of the guide panel GP has the first optical sheet SH1, the second optical sheet SH2, the third optical sheet SH3, (LGP) at the same time.

The adhesive member DT can suppress a positional change that may occur in the optical sheets OPS and / or the LGP LGP due to external factors such as temperature change, humidity change, external impact, and vibration. Accordingly, the present invention can prevent damage due to mutual interference between the optical sheets (OPS) and / or the LGP (LGP) and other mechanisms by restricting the movement of the optical sheets (OPS) and / or the LGP Or noise can be prevented from being generated in the liquid crystal display device.

The adhesive member DT has a function of preventing direct contact between the panel support SP of the guide panel GP and the optical sheet OPS and a function of preventing the panel support SP from pressing the optical sheet OPS It is possible to perform a function of buffering the force to be applied. Accordingly, the present invention can prevent damage to optical sheets (OPS) due to interference with other mechanisms.

The present invention does not need to additionally include a separate mechanism for preventing the flow of the optical sheets (OPS) and / or the light guide plate (LGP). Accordingly, since it is not necessary to secure a separate space for further providing the fixed mechanism, the degree of freedom of design in the same space can be improved. Further, since there is no need for an additional process for providing a fixed mechanism, there is an advantage in that it is possible to prevent a decrease in yield and an increase in manufacturing cost due to the addition of a process.

5, the light guide plate LGP and the first through third optical sheets SH1, SH2, and SH3, which are sequentially stacked by the first through third open holes OH3, have steps in a stepped shape. The guide panel GP is provided so that both the light guide plate LGP located at the lowest layer and the third optical sheets SH3 located at the uppermost layer can be easily attached to the second surface F2 of the adhesive member DT. The panel support portion SP of the first embodiment may include an inclined surface SL having a predetermined inclination angle [theta]. That is, the back surface of the panel supporting portion SP has the inclined surface SL corresponding to the above-described stepped shape.

In this case, the first surface F1 of the adhesive member DT is adhered to the inclined surface SL of the panel supporting portion SP. The inclined surface SL of the panel supporting portion SP can be realized by forming the panel supporting portion SP in a corresponding form and can be realized by attaching a separate member having the inclination angle to the back surface of the panel supporting portion SP .

Hereinafter, a liquid crystal display according to another embodiment of the present invention will be described with reference to FIGS. 6 to 9. FIG. 6 to 9 are views for explaining the shape and positional relationship of the open holes provided in the optical sheets.

6, the first optical sheet SH1 includes a first open hole OH1, the second optical sheet SH2 stacked on the first optical sheet SH1 includes a second open hole OH2, . The first open hole OH1 may have a smaller hole area than the second open hole OH2.

For example, the first open hole OH1 and the second open hole OH2 may have a rectangular shape having two long sides parallel to each other and two short sides parallel to each other. That is, the first open hole OH1 has the first short side A1 and the first long side B1, and the second open hole OH2 has the second short side A2 and the second long side B2. have. At this time, the first short side A1 may have a shorter length than the second short side A2, and the first long side B1 may have a length shorter than the second long side B2.

7, the first optical sheet SH1 includes a first open hole OH1, the second optical sheet SH2 stacked on the first optical sheet SH1 includes a second open hole OH2, . The first open hole OH1 overlaps with at least a part of the second open hole OH2.

For example, the first open hole OH1 may completely overlap the second open hole OH2, and may be located inside the boundary of the second open hole OH2. That is, the first open hole OH1 can be completely exposed by the second open hole OH2 (FIG. 7A). The boundary of the second open hole OH2 is the second open hole OH2 ) Of the second open hole OH2 that determines the shape of the second open hole OH2. As another example, the first open hole OH1 may overlap only a part of the second open hole OH2. That is, the first open hole OH1 can be partially shifted to the outside of the boundary of the second open hole OH2 (Fig. 7 (b)). That is, All of the optical sheets OPS located in the lower layer by the open holes of the optical sheets OPS located in the upper layer among the OPSs may be all exposed.

Referring to FIG. 8, the panel support portion SP of the guide panel GP is formed to have a predetermined width. Since the region where the panel support portion SP is located corresponds to the region where light can not be transmitted, it is preferable that the panel support portion SP is designed so as to have the minimum possible width.

The panel supporting portion SP1 positioned in the region corresponding to the light-incoming portion can be formed to have a width W larger than the panel supporting portion SP1 located in the outside region. That is, since the light source LS is further disposed in the light-incident portion, unlike the light-receiving portion, a panel support portion SP1 having a relatively wide width W is provided for covering (or shielding) the light source LS There is a need.

The adhesive member DT can be adhered to the back surface of the panel supporting portion SP1 located in the region corresponding to the light-incoming portion. That is, since the adhesive member DT needs to be formed so as to have a sufficient area to simultaneously adhere the optical sheets OPS and / or LGP, a relatively wide width W It may be preferable to adhere to the panel supporting portion SP1 of the light-incoming portion.

Referring to Fig. 9, the optical sheet SH includes an open hole OH. The open hole OH may be located at one side edge of the optical sheet SH.

For example, the open hole OH may be formed at one side edge of the optical sheet SH, on the side surface. That is, the open hole OH can be formed by removing a part of the side surface of the optical sheet SH. In this case, the boundary of the optical sheet SH corresponds to the boundary of the open hole OH. The boundary of the open hole OH means the outer frame which determines the shape of the open hole OH and the boundary of the optical sheet SH means the outer frame which determines the shape of the optical sheet SH.

As another example, the open hole OH may be formed in a region spaced apart from the side surface by a predetermined distance, at one side edge of the optical sheet SH. The open hole OH can be formed by penetrating an inner part of the optical sheet SH. In this case, the boundary of the open hole OH is located inside the boundary of the optical sheet SH.

The open hole OH may be spaced apart from the side surface of the optical sheet SH by a predetermined gap G1 in the X axis direction. The open holes OH may be spaced apart from the side surface of the optical sheet SH by a predetermined gap G2 in the Y-axis direction. The open holes OH may be spaced apart from the side surface of the optical sheet SH by a predetermined gap G1 in the X axis direction and spaced from the side surface of the optical sheet SH by a predetermined gap G2 in the Y axis direction .

The present invention is provided with the adhesive member DT to prevent the flow of the LGP and optical sheets OPS that may be caused by external factors such as temperature change, humidity change, external impact, vibration, LGP) and the optical sheets (OPS). Further, the present invention can reduce the noise generated by the flow of the light guide plate (LGP) and the optical sheets (OPS).

Furthermore, the present invention can prevent the optical characteristics of the liquid crystal display device from being changed due to damage of the LGP and the optical sheets (OPS). Thus, the present invention can provide a liquid crystal display device in which product reliability is improved by maintaining image quality.

Although the drawing shows an example in which the open hole OH is rectangular, it is not limited thereto. The open holes may have various planar shapes including circular, elliptical, and polygonal shapes.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be defined by the claims.

PNL: liquid crystal display panel GP: guide panel
SP: Panel support OPS: Optical sheet
SH1: first optical sheet OH1: first open hole
SH2: second optical sheet OH2: second open hole
SH3: third optical sheet OH3: third open hole
LGP: light guide plate DT: adhesive member
LS: Light source REF: Reflective sheet
CB: Cover bottom HP: Horizontal part
VP: vertical part

Claims (10)

A liquid crystal display panel;
A plurality of optical sheets disposed under the liquid crystal display panel;
A light guide plate disposed under the optical sheets;
A guide panel disposed between the liquid crystal display panel and the optical sheets and having a panel support portion for supporting an edge of the liquid crystal display panel from below; And
And an adhesive member disposed between the optical sheets and the panel support to fix the optical sheets and the panel support to each other,
The above-
A first optical sheet; And
And a second optical sheet disposed on the first optical sheet and having a first open hole exposing a part of the first optical sheet,
Wherein the adhesive member comprises:
A first side bonded to the back side of the panel support; And
And a second surface bonded to a part of the second optical sheet and adhered to a part of the first optical sheet exposed through the first open hole. The method according to claim 1,
Wherein the first optical sheet comprises:
And a second open hole exposing a part of the light guide plate,
Wherein the second surface of the adhesive member comprises:
A liquid crystal display device bonded to a part of the second optical sheet and adhered to a part of the first optical sheet exposed through the first open hole and bonded to a part of the light guide plate exposed through the second open hole, . The method according to claim 1,
The back surface of the panel support portion
And an inclined surface having a predetermined inclination,
Wherein the first surface of the adhesive member
And is attached to the inclined surface. 3. The method of claim 2,
Wherein at least a part of the first open hole
And the second open hole is overlapped with the second open hole. 3. The method of claim 2,
The first open hole
And exposing the second open hole. 6. The method of claim 5,
The first open hole
And has a hole area larger than that of the second open hole. The method according to claim 1,
Further comprising a light source for emitting light to the light guide plate,
Wherein the adhesive member comprises:
And the light source is disposed in the light-incident portion. The method according to claim 1,
The first open hole
Wherein the optical sheet has a shape in which a side portion of the optical sheet is removed. The method according to claim 1,
The first open hole
Wherein the optical sheet is spaced apart from the side surface of the optical sheet by a predetermined distance and has a shape in which an inner portion of the optical sheet is penetrated. The method according to claim 1,
The first open hole
Wherein the liquid crystal display device has a planar shape including a circle, an ellipse, and a polygon.

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