KR101780902B1 - Guide panel, case member comprising the same, liquid crystal display device comprising the same, and method of fabricating the same - Google Patents

Abstract

The present invention relates to an externalized guide panel. According to the present invention, the guide panel includes an extension part having a first groove and a panel support having a second groove. The present invention is equipped with an externalized guide panel to provide a lightweight and thin liquid crystal display device.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guide panel, a case member including the guide panel, a liquid crystal display including the guide panel, and a manufacturing method thereof.

The present invention relates to a guide panel, a case member including a guide panel, a liquid crystal display including the guide panel, and a manufacturing method for manufacturing the guide panel.

The liquid crystal display device is used as a portable computer such as a notebook PC, an office automation device, an audio / video device, and an indoor / outdoor advertisement display device. A liquid crystal display controls an electric field applied to a liquid crystal layer of a liquid crystal display panel to display an image by modulating light incident from a backlight unit (BLU).

The backlight unit is divided into a direct type and an edge type. The edge type 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. In the edge type backlight unit, the light source irradiates light to one side of the light guide plate, and the light guide plate converts the linear light source or point light source into a planar light source, and irradiates the liquid crystal display panel. The direct-type backlight unit has a structure in which a plurality of light sources are disposed under the liquid crystal display panel, and irradiates the light diffused through the diffusion plate to the liquid crystal display panel.

The liquid crystal display panel (PNL) 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 assembled liquid crystal module is housed in an inner space of a set part such as a rear cover or a middle frame, and is implemented as a liquid crystal display device.

As such, since the conventional liquid crystal display device is composed of many structures, it is difficult to design a lightweight and thin type. Therefore, the conventional liquid crystal display device has a problem that is difficult to be applied and applied to various fields. In addition, when the set components are simply removed for lightness and thinness of the liquid crystal display device, light emitted from the light source may leak to the outside and be visually recognized by the user.

SUMMARY OF THE INVENTION An object of the present invention is to provide an outer appearance guiding panel, a case member including a guide panel, a liquid crystal display including the guide panel, and a manufacturing method for manufacturing the guide panel .

The guide panel according to the present invention includes a panel support portion and an extension portion. The panel support extends in a first direction. The extension extends from the panel support in a second direction that intersects the first direction. The extending portion includes a first groove provided such that an inner surface of the extending portion is partially recessed in the first direction. The panel supporting portion includes a second groove provided so that the inner surface of the panel supporting portion is partially recessed in the second direction.

The case member according to the present invention includes a cover bottom for fixing the liquid crystal display panel and the backlight unit, and a guide panel. The guide panel includes a first groove and a second groove for fixing the cover bottom in two axial directions intersecting each other.

A liquid crystal display device according to the present invention includes a liquid crystal display panel, a backlight unit, a cover bottom, and a guide panel. The backlight unit is disposed on the back surface of the liquid crystal display panel. The cover bottom includes a horizontal portion and a vertical portion. The horizontal part surrounds the back surface of the backlight unit. The vertical portion extends from the horizontal portion and surrounds the side surface of the backlight unit. The guide panel includes a panel support and an extension. The panel supporting portion is disposed at the edge between the liquid crystal display panel and the backlight unit. The extensions extend from the panel support and wrap the sides of the vertical portion. The vertical portion includes a hook projecting in the direction of the extension. The extension includes a first groove through which the hook is drawn. The panel support includes a second groove into which one end of the extension is drawn.

The present invention can provide a lightweight and thinned liquid crystal display device with an externalized guide panel. The liquid crystal display device according to the present invention includes the guide panel having the first groove and the second groove so that the guide panel and the cover bottom can be firmly fastened.

The liquid crystal display device according to the embodiment of the present invention has an advantage that light leakage phenomenon can be minimized without forming a separate structure for blocking light leakage. Accordingly, the present invention can minimize the bezel area, reduce the process time compared to the structure that forms a separate structure, and have an advantage that the process yield can be remarkably improved.

1 is a cross-sectional view illustrating a liquid crystal display device according to an embodiment of the present invention.
2 is a view showing the shape of a guide panel according to an embodiment of the present invention.
3 is a view showing a fastening relationship between a guide panel and a cover bottom according to an embodiment of the present invention.
4 is a view schematically showing a mold structure for forming a guide panel according to a comparative example.
5 is a view schematically showing a mold structure for forming a guide panel according to an embodiment of the present invention.
6 is a view for explaining the operation of the slide module and the second core in the mold structure of FIG.
7 to 9 are views for explaining the structure and the problem of the guide panel according to the first comparative example.
FIGS. 10 and 11 are views for explaining the structure and problems of the guide panel according to the second comparative example.
12 is a view for explaining a structure and a problem of the guide panel according to the third comparative example.

A method of manufacturing a liquid crystal display according to an embodiment of the present invention includes a step of cleaning a substrate of a liquid crystal display panel, a step of patterning a substrate, an orientation film forming / rubbing step, a step of attaching a substrate and dropping a liquid crystal, a driving circuit mounting step, Assembly process of the module, 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 the liquid crystal display panel and the backlight unit, which are mounted with the driving circuit, into a liquid crystal module by using a guide panel, a cover bottom and the like.

The method of manufacturing a liquid crystal display device according to an embodiment of the present invention may further include an inspection process and a repair process. 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.

Hereinafter, a structure of a liquid crystal display device according to an embodiment of the present invention will be described with reference to FIG. 1 is a cross-sectional view illustrating a liquid crystal display device according to an embodiment of the present invention.

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

Polarizing films UP and LP may be provided on the front surface and / or the back surface of the liquid crystal display panel PNL. The polarizing films UP and LP are provided on at least one of the front surface and the back surface of the liquid crystal display panel PNL so that only the components in a specific direction among the components of the light emitted from the backlight unit pass through.

A sealant RE covering the side surfaces of the lower substrate LSUB and the upper substrate USUB is formed on the sides of the lower substrate LSUB and the upper substrate USUB in order to protect the side surfaces of the lower substrate LSUB and the upper substrate USUB, sealed. The sealing resin may include, but is not limited to, an oligomer, a monomer, a photo-initiator, and an additive.

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.

Below the light guide plate LGP, a reflection sheet REF for reflecting the light incident from the light guide plate LGP and increasing the efficiency of light incident on the liquid crystal display panel PNL is 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 by a case member such as a cover bottom CB and a guide panel GP to be implemented as a liquid crystal module (LCM).

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 formed in an "a " shape whose cross section has at least one bent portion. The guide panel GP includes a panel support B1 and an extension B2. The panel supporting portion B1 is provided between the liquid crystal display panel PNL and the backlight unit and supports the edge of the liquid crystal display panel PNL from the bottom. The panel supporting portion B1 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 extension B2 extends from the panel support B1 and is arranged to surround the vertical portion VP of the cover bottom CB at the outside of the cover bottom CB. The extended portion B2 extends from one end of the panel supporting portion B1 in the backward direction.

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 guide panel GP and the cover bottom CB can be mutually fixed using fastening means such as a hook. Details of the shape of the guide panel GP will be described later.

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 portion B1 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). A stopper STO may be further provided at an end of the panel support B1 to prevent the adhesive layer LSA from being separated. The stopper STO may have a shape protruding from the panel supporting portion B1 in the front direction. The stopper STO may be formed as one body with the panel supporting portion B1. The adhesive layer (LSA) may be located between the extension portion (B2) and the stopper (STO).

The embodiment according to the present invention does not need to cover the edge of the liquid crystal display panel PNL with a separate structure such as a case top in order to fix the movement of the liquid crystal display panel PNL. Therefore, the bezel area caused by blocking the edges of the liquid crystal display panel PNL by the case top can be eliminated or reduced.

However, when the case top is not provided, it is possible to flow in the lateral direction of the liquid crystal display panel (PNL). That is, when the case top is not provided, whether or not the liquid crystal display panel is fixed depends on the adhesive force of the adhesive layer, so that the liquid crystal display panel is not fixed at the current position due to external environmental change and is likely to be detached. In the case where the liquid crystal display panel PNL flows without being fixed at the position, damage may occur due to interference with other mechanisms, and optical characteristics of the liquid crystal display device may be changed to lower the product reliability. Therefore, in order to simultaneously satisfy the aesthetics and the product reliability of the liquid crystal display device, it is necessary to restrain and limit the movement in the lateral direction of the liquid crystal display panel while minimizing the area occupied by the bezel area.

To this end, the extension B2 according to the embodiment of the present invention extends from one end of the panel support B1 to the front direction. The extended portion B2 supports the side surface of the liquid crystal display panel PNL and can restrict and restrict the movement to the side surface of the liquid crystal display panel PNL. Accordingly, the embodiment of the present invention can provide a liquid crystal display device that can simultaneously satisfy both aesthetics and product reliability.

In addition, the liquid crystal display device according to the embodiment of the present invention does not need to include a separate set component such as a rear cover or a middle frame. This means that the guide panel GP is exposed and exposed to the outside, which means that the guide panel GP can function as a conventional set component. The portion to be exposed may be the extended portion B2 of the guide panel GP. Accordingly, the embodiment of the present invention has an advantage that it is possible to reduce the manufacturing cost, and to provide a liquid crystal display device with reduced thickness and weight.

Further, the embodiment according to the present invention does not need to carry out a separate additional process for fastening the set parts unlike the prior art. Accordingly, the embodiment according to the present invention has an advantage that the process time and the process cost can be reduced in accordance with the process addition, the process failure can be reduced, and the process yield can be remarkably improved.

Hereinafter, the shape of the guide panel and the engagement relationship between the guide panel and the cover bottom according to the embodiment of the present invention will be described with reference to Figs. 2 and 3. Fig. 2 is a view showing the shape of a guide panel according to an embodiment of the present invention. 3 is a view showing a fastening relationship between a guide panel and a cover bottom according to an embodiment of the present invention.

Referring to FIGS. 2 and 3, the guide panel GP and the cover bottom CB are fastened by a hook (HK) method. The vertical portion VP of the cover bottom CB includes at least one hook HK projecting toward the extension B2 of the guide panel GP. The extension B2 of the guide panel GP includes at least one first groove SG into which the hook HK is guided. The number of the first grooves SG corresponds to the number of the hooks HK.

The first groove SG may be an inner space formed by partially enclosing the inner surface of the extended portion B2. The inner surface of the extended portion B2 means one surface of the extended portion B2 facing the vertical portion VP. The first groove SG is opened toward the hook HK of the vertical portion VP. The extended portion B2 has a different thickness in the region in which the first groove SG is formed and in the region in which the first groove SG is not formed.

The liquid crystal display device according to the embodiment of the present invention does not use a screw structure to fasten the guide panel GP and the cover bottom CB to each other. When a screw structure is applied, an additional process is required compared to a hook (HK) fastening structure. Therefore, the assembling process time is increased, the manufacturing cost is increased, and the defective rate as the number of process steps is increased. Therefore, the embodiment according to the present invention can prevent the above-mentioned problem by applying a hook structure (HK), not a screw fastening structure.

However, the fastening force of the HK structure may be weaker than that of the screw structure. In order to compensate for this, the embodiment according to the present invention further includes a second groove (VG) formed in the panel support portion B1 of the guide panel GP.

Specifically, the panel supporting portion B1 of the guide panel GP includes a second groove VG into which the vertical portion VP of the cover bottom CB is led. The second groove VG may be an inner space formed by partially recessing the inner surface of the panel support portion B1. The inner side surface of the panel supporting portion B1 means one surface of the panel supporting portion B1 facing the one end of the vertical portion VP. And the second groove VG is opened in the backward direction. The panel support portion B1 has a thickness different from that of the region where the second groove VG is formed and the region where the second groove VG is not formed. The second groove VG is elongated in one direction so that one end of the vertical part VP can be drawn.

The vertical portion VP extending from the horizontal portion HP of the cover bottom CB in the front direction is guided to the inner space provided by the second groove VG. The liquid crystal display device according to the embodiment of the present invention further includes the second groove VG through which the vertical part VP of the cover bottom CB is drawn so that the fastening of the guide panel GP and the cover bottom CB It can be more firmly. That is, even when an external force is applied, the guide panel GP can maintain the engagement with the cover bottom CB without detaching from the cover bottom CB. In addition, the present invention can prevent detachment of structures housed in the inner space of the guide panel GP and the cover bottom CB by firmly fixing the guide panel GP and the cover bottom CB.

In other words, the guide panel GP fixes the cover bottom CB in two axial directions. For example, the guide panel GP includes a first groove SG for fixing the cover bottom CB in a second axial direction (e.g., the Y-axis direction) And a second groove VG for fixing the cover bottom CB in the X-axis direction.

The first groove SG is formed in the extended portion B2 of the guide panel GP. The extended portion B2 of the guide panel GP extends in the second axial direction. The first groove SG may be provided such that the inner surface of the extended portion B2 is partially recessed in the first axial direction. The thickness of the extended portion B2 in the region where the first groove SG is formed is thinner than the maximum thickness of the extended portion B2. Since the first groove SG does not completely penetrate the extended portion B2 of the guide panel GP, the extended portion B2 in the region where the first groove SG is formed has a predetermined thickness.

The second groove VG is formed in the panel supporting portion B1 of the guide panel GP. The panel supporting portion B1 of the guide panel GP extends in the first axial direction. The second groove VG may be provided such that the inner surface of the panel supporting portion B1 is partially recessed in the second axial direction. The thickness of the panel supporting portion B1 in the region where the second groove VG is formed is thinner than the maximum thickness of the panel supporting portion B1. Since the second groove VG does not completely penetrate the panel supporting portion B1 of the guide panel GP, the panel supporting portion B1 in the region where the second groove VG is formed has a predetermined thickness.

Unlike the panel supporting portion B1, the extended portion B2 is made into an outer appearance and exposed to the outside. Therefore, it is necessary to secure sufficient rigidity, and it is necessary to minimize deterioration of appearance quality due to a process failure. To this end, it is preferable that the extended portion B2 to be made to have a larger thickness than the panel supporting portion B1.

One end of the vertical part VP extending in the second axial direction enters the second groove VG of the guide panel GP and the movement in the first axial direction is fixed in the cover bottom CB. The hook HK protruding in the first axial direction is pulled into the first groove SG of the guide panel GP and the movement in the second axial direction is fixed in the cover bottom CB. The cover bottom CB can be fitted to the guide panel GP.

4 is a view schematically showing a mold structure for forming a guide panel according to a comparative example. 5 is a view schematically showing a mold structure for forming a guide panel according to an embodiment of the present invention. 6 is a view for explaining the operation of the slide module and the second core in the mold structure of FIG.

Referring to FIG. 4, because the guide panel GP according to the embodiment of the present invention has the undercut portion UC, the molding in the core opening direction is not easy. The undercut portion UC means a concave (or protruding) portion in which it is difficult to take out the molded article only by the movement of the core in the opening direction.

Specifically, the mold structure according to the comparative example may include a first core C1, a second core C2, and a third core C3. In order to form the guide panel GP having the first groove SG and the second groove VG, it is necessary to process the second groove VG corresponding to the undercut portion UC as shown in the figure, It is difficult to process the undercut portion UC only by the first core C1, the second core C2, and the third core C3 provided movably in the core opening direction as in the mold structure according to the first embodiment. Therefore, in the conventional method, there is a problem that the guide panel GP having the first groove SG and the second groove VG can not be formed at the same time.

Referring to FIG. 5, an embodiment according to the present invention uses a slide module (SCR) to form a guide panel GP having a first groove SG and a second groove VG. Specifically, the mold structure for forming the guide panel GP according to the embodiment of the present invention includes a first core CR1 forming a cavity having a shape corresponding to the guide panel GP to be manufactured, CR2), a third core (CR3), and a slide module (SCR).

The first core CR1 is disposed on the upper side with respect to the cavity and can determine the shape of the outer side of the panel supporting portion B1 and the shape of the upper side of the extending portion B2. The second core CR2 is disposed on the lower side with respect to the cavity and can determine the shape of the inner side of the panel supporting portion B1 (and the lower side of the extending portion B2) and the second groove VG. The third core (CR3) is disposed on the right side with respect to the cavity, and the shape of the outer surface of the extended portion (B2) can be determined. The slide module (SCR) is disposed on the lower side with respect to the cavity, and can determine the inner surface of the extended portion (B2) and the shape of the first groove (SG).

The sliding module SCR is slid in the direction perpendicular to the opening direction of the second core CR2 under the control of the movable part that is provided in advance so that the first groove SG corresponding to the undercut portion UC, Can be formed without interfering with other cores. The slide module (SCR) can be slidably inserted into a through hole (SCH, FIG. 6) passing through the second core (CR2). The slide module SCR and the second core CR2 can be mutually engaged so that their mutual movements are not restricted and the sliding direction of the slide module SCR can be fixed to the fastening shape of the slide module SCR and the second core CR2 Can be guided correspondingly.

6, the slide module SCR includes a forming part FP, an inclined part CP, and an elastic part EP.

The forming part FP is a part having a shape corresponding to the shape of the undercut UC for processing the undercut (UC) of the molded product. The shape of the first groove SG of the guide panel GP can be determined by the forming part FP. The forming part FP may be provided to protrude outward from the slide module SCR. The forming part FP is slidably provided in the through hole SCH passing through the second core CR2. That is, the forming part FP is provided so as to be able to be drawn in and out of the through hole SCH.

The inclined portion CP is a portion contacting the movable portion OPP. The inclined portion CP includes an inclined surface having a predetermined inclination, and the inclined surface of the inclined portion CP abuts the inclined surface of the movable portion OPP. Therefore, the slide module SCR can be guided corresponding to the movement of the movable portion OPP. That is, the slide module SCR is slidably engaged with the movement of the movable portion OPP (e.g., movement in the opening direction of the second core CR2) (for example, in the opening direction of the second core CR2) And sliding in the vertical direction). Under the control of the movable part OPP, the sliding module SCR which is slidable is capable of being drawn into and drawn out of the through hole SCH of the second core CR2.

The elastic part EP is a part provided so as to be able to contact with the second core CR2. The resilient portion EP includes an elastic member (ELM) such as a spring. The elastic part EP may be an internal space provided by a part of the slide module SCR, and the elastic member ELM may be accommodated in the internal space. However, the present invention is not limited thereto. When an external force due to the moving part OPP is provided to the slide module SCR, the elastic part EP and the second core CR2 come into contact with each other, so that the elastic part EP maintains the compressed state. On the other hand, when the external force caused by the moving part OPP is released, the elastic member ELM is elastically restored, and the slide module SCR is separated from the second core CR2 by the elastic force of the elastic member ELM .

The operation of the moving part OPP, the slide module SCR and the second core CR2 will be described below. When the opening / closing direction of the second core CR2 is assumed to be the Y axis direction, the movable portion OPP can move in the Y axis direction.

Referring to Figure 6 (a), cores and a slide module (SCR) are coupled to form a cavity corresponding to the shape of the guide panel GP. Concretely, the slide module SCR moves in the -X-axis direction (2) in conjunction with the motion (1) in the -Y-axis direction of the movable part OPP. At this time, the molding part FP of the slide module SCR drawn into the through-hole SCH of the second core CR2 is combined with other cores to form a cavity corresponding to the shape of the guide panel GP. The elastic part EP of the slide module SCR abuts the second core CR2 and the elastic member ELM of the elastic part EP maintains the compressed state.

Referring to FIG. 6 (b), a guide panel GP is formed by injecting an injection material into a cavity provided with a core and a slide module (SCR). Then, in order to take out the guide panel GP, the cores and the slide module SCR are separated in the opening direction.

Specifically, when the moving part OPP moves in the + Y axis direction (① '), the external force provided to the slide module SCR through the moving part OPP is released. In response to this, the elastic member ELM of the elastic part EP is resiliently restored and the slide module SCR moves in the + X-axis direction in which the second core CR2 is separated by the elastic force of the elastic member ELM (2) '. That is, the slide module SCR is sufficiently separated from the second core CR2 by the elastic force of the elastic member ELM.

As the slide module SCR is sufficiently separated from the second core CR2, it becomes possible to take out the second core CR2 in the -Y axis direction. That is, as the slide module SCR is escaped, the second core CR2 can be separated (③ ') in the opening direction without interference of the slide module SCR. The guide panel GP A first step of providing cores for forming a cavity of a predetermined shape corresponding to the guide panel GP; a step of injecting an injection material into a cavity provided with the cores combined to form a guide panel GP A third step of separating the cores in the opening direction and taking out the guide panel GP.

The first step includes the step of forming a cavity having a predetermined shape corresponding to the guide panel GP including the panel supporting portion B1 having the second groove VG and the extending portion B2 having the first groove SG (CR1), a second core (CR2), a third core (CR3), and a slide module (SCR).

The second step is to form the guide panel GP by injecting the injection material into the cavity provided with the first core (CR1), the second core (CR2), the third core (CR3) and the slide module . The first core (CR1) is disposed on the upper side of the cavity to determine the shape of the outer surface of the panel supporting portion (B1). The second core CR2 is disposed below the cavity to determine the shape of the inner surface of the panel support portion B1 and the shape of the second groove VG. The third core (CR3) determines the outer surface shape of the extended portion (B2). The slide module SCR determines the shape of the inner surface of the extended portion B2 and the first groove SG.

The third stage is a sliding module slidably provided in a through hole (SCH) passing through the first core (CR1), the second core (CR2), the third core (CR3) and the second core In the opening direction, and taking out the guide panel GP.

Hereinafter, the effects of the present invention will be described in detail with reference to Figs. 7 to 12 and comparison with comparative examples. 7 to 9 are views for explaining the structure and the problem of the guide panel according to the first comparative example.

7, the guide panel GP1 according to the first comparative example includes a first groove SG into which the hook HK of the cover bottom CB is inserted and a second groove SG into which the one end of the vertical portion VP is inserted. And may include a hole (SH). In the sink hole SH according to the first comparative example, one end of the vertical part VP can be pulled in to restrain the movement of the cover bottom CB. The sink hole SH according to the first comparative example is different from the second groove VG according to the present invention in that the sink hole SH completely penetrates the panel supporting portion B1 of the guide panel GP1.

The guide panel GP1 according to the first comparative example having the first groove SG and the sink hole SH can be formed in a conventional manner without using the slide module as in the present invention. That is, as shown in FIG. 8, since the guide panel GP1 according to the first comparative example has no undercut portion, it can be formed only by the movement of the core in the opening direction.

However, the embodiment according to the present invention is characterized in that the guide panel GP1 is externalized for lightening and thinning of the liquid crystal display device. It is necessary to prevent the light leakage from the light source LS accommodated in the guide panel GP1 and the cover bottom CB to the outside. Referring to FIG. 8, the light leakage phenomenon can be recognized by the user due to the deficiency of the liquid crystal display device, which may lower the product reliability of the liquid crystal display device.

When the guide panel GP1 according to the first comparative example is outlined, light from the light source LS can be emitted to the outside through the sink hole SH. That is, the sink hole SH becomes a path through which the light emitted from the light source LS moves, and can act as a factor causing light leakage. Therefore, there is a limit in shaping the guide panel GP1 according to the first comparative example. In addition, various problems such as foreign matter may be introduced from the outside through the sink hole (SH).

FIGS. 10 and 11 are views for explaining the structure and problems of the guide panel according to the second comparative example.

Referring to FIG. 10, the guide panel GP2 according to the second comparative example includes a hook groove HG into which a hook HK of the cover bottom CB is inserted, a second groove VG into which one end of the vertical part VP is inserted, (HH). The hook hole HH according to the second comparative example can be fastened to the hook HK provided at the vertical part VP. The hook hole HH according to the second comparative example is different from the first groove SG according to the present invention in that the hook hole HH completely penetrates the extended portion B2 of the guide panel GP2.

The guide panel GP2 according to the second comparative example having the second groove VG and the hook hole HH can be formed in a conventional manner without using the slide module as in the present invention. That is, as shown in FIG. 11, the guide panel GP2 according to the second comparative example does not have an undercut portion and can be formed only by the movement of the core in the opening direction.

However, when the guide panel GP2 according to the second comparative example is externalized, the light from the light source LS can be emitted to the outside through the hook hole HH. That is, the hook hole HH becomes a path through which the light emitted from the light source LS moves, and can act as a factor causing light leakage. Therefore, there is a limit in shaping the guide panel GP2 according to the second comparative example. In addition, various problems may occur, such as foreign matter being introduced from the outside through the hook hole HH.

12 is a view for explaining a structure and a problem of the guide panel according to the third comparative example.

12, in the guide panel GP3 according to the third comparative example, as in the first comparative example and the second comparative example, in order to reduce light leakage occurring when holes are formed in the guide panel GP3, rib, RB). The rib RB extends from the panel supporting portion B1 of the guide panel GP3 in the backward direction. The more easily the panel supporting portion B1 is disposed adjacent to the horizontal portion HP of the cover bottom CB, the easier it is to cut off the light leakage.

However, the light guide plate (LGP) may flow due to external factors such as temperature change, humidity change, external impact, and vibration. In order to prevent interference with the flowing light guide plate LGP, a structure disposed adjacent to the light guide plate LGP needs to be spaced apart from the light guide plate LGP by a predetermined distance. That is, the ribs RB of the guide panel GP3 need to be spaced apart from the light guide plate LGP by a predetermined gap G. Therefore, in order to form the rib RB, it is necessary to allocate a sufficient space corresponding to the thickness of the rib RB and the gap G between the rib RB and the light guide plate LGP. This means that the degree of immersion of the user can be reduced due to a relatively increased bezel area.

In addition, when the guide panel GP3 according to the third comparative example is applied, the ease of fastening is lowered. Concretely, the cover bottom CB and the guide panel GP3 are mutually fastened by fitting the hook HK and the first groove SG. When the rib RB is provided, the structural complexity is increased It is impossible to fasten the hook, or the hook is difficult. Further, it is considerably difficult to simultaneously form the ribs RB and the first grooves SG by using a general mold structure. Therefore, when the guide panel GP3 according to the third comparative example is applied, the process time and process failure may significantly increase.

The embodiment according to the present invention can provide a lightweight and thinned liquid crystal display device by providing an externalized guide panel (GP). The liquid crystal display according to the embodiment of the present invention includes the guide panel GP having the first groove SG and the second groove VG so that the guide panel GP and the cover bottom CB are firmly fixed Can be concluded.

The liquid crystal display device according to the embodiment of the present invention has an advantage that light leakage phenomenon can be minimized without forming a separate structure for blocking light leakage. Accordingly, the embodiment of the present invention can minimize the bezel area and reduce the process time compared to the structure for forming a separate structure such as the rib (RB, FIG. 11), and can remarkably improve the process yield .

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.

GP: guide panel B1: panel support
B2: extension SG: first groove
VG: Second groove CB: Cover bottom
HP: Horizontal VP: Vertical
HK: hook PNL: liquid crystal display panel
LS: Light source LGP: Light guide plate

Claims (17)

delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete A panel support portion extending in a first direction and having a second groove and an extension portion extending in a second direction intersecting with the first direction from the panel support portion and having an extension having a first groove, Providing a first core, a second core, a third core, and a slide module to form a cavity;
A second core disposed on the upper side of the cavity to determine the shape of the outer side surface of the panel supporting portion, a second core disposed below the cavity to determine the shape of the inner side surface of the panel supporting portion and the second groove, Forming a guide panel by injecting an injection material into the cavity provided with a third core for determining an outer shape of the extended portion and a slide module for determining an inner surface of the extended portion and a shape of the first groove, ; And
Separating each of the slide modules slidably provided in the through hole passing through the first core, the second core, the third core, and the second core in the opening direction to take out the guide panel ≪ / RTI > 17. The method of claim 16,
Wherein the slide module slides in a direction perpendicular to an opening direction of the second core.

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