Liquid crystal display device

A liquid crystal display device is provided. The liquid crystal display device includes a liquid crystal panel, a cover bottom, a rear cover, and a guide panel. The liquid crystal panel displays an image. The cover bottom accommodates a light source configured to provide light to the liquid crystal panel. The rear cover accommodates the cover bottom. The guide panel is positioned on the cover bottom to support the liquid crystal panel. Each of the guide panel and the cover bottom includes a hook which protrudes from a surface so as to be fitted to a latching portion of the rear cover.

CROSS-REFERENCE TO RELATED APPLICATION(S)

This application claims the benefit of Korean Patent Application No. 10-2017-0181387, filed on Dec. 27, 2017, which is incorporated herein by reference for all purposes as if fully set forth herein.

BACKGROUND

Technical Field

The present disclosure relates to a liquid crystal display device.

Description of the Related Art

With development of information technologies, the market of displays used as a medium that connects a user and information is growing. Accordingly, demands for Flat Panel Display (FPD), such as Liquid Crystal Display (LCD), Organic Light Emitting Diode Display (OLED), and Plasma Display Panel (PD) are increasing. Among them, the LCD which can realize high resolution and can be manufactured both in a small size and in a large size are most widely used.

The LCD includes a liquid crystal panel and a backlight unit. The liquid crystal panel includes a liquid crystal layer, and liquid crystal layer is formed between a transistor substrate, on which a thin film transistor, a storage capacitor, a pixel electrode, etc., are formed, and a color filter substrate on which a color filter, a black matrix, etc., are formed.

The backlight unit includes: a Light Emitting Diode (LED) substrate on which an LED and an LED driver for driving the LED are formed; a light guide plate which converts light emitted from the LED into a surface light source; a reflective plate which reflects light at the bottom of the light guide plate; and optical sheets which collects and diffuses light emitted from the light guide plate. The backlight unit includes a cover bottom which accommodates the LED substrate, the light guide plate, the reflective plate, and the optical sheets.

The liquid crystal panel and the backlight unit are assembled by mechanisms, such as a rear cover and a guide panel, to be manufactured into a liquid crystal panel module. The backlight unit is accommodated in the rear cover, and the liquid crystal panel sits on the guide panel which is covered to the rear cover. However, the existing mechanism which has been proposed may be difficult to be coupled to each other or may damage to the panel. There is a need of a solution of these problems.

BRIEF SUMMARY

The present disclosure provides in one or more embodiments a liquid crystal display device including a liquid crystal panel, a cover bottom, a rear cover, and a guide panel. The liquid crystal panel displays an image. The cover bottom accommodates a light source configured to provide light to the liquid crystal panel. The rear cover accommodates the cover bottom. The guide panel is positioned on the cover bottom to support the liquid crystal panel. Each of the guide panel and the cover bottom includes a hook which protrudes from respective surfaces of the guide panel and the cover bottom, and the hooks are fitted into corresponding latching portions of the rear cover to couple the guide panel and the cover bottom to the rear cover.

In another embodiment, the present disclosure provides a liquid crystal display device including a liquid crystal panel, a cover bottom, a rear cover, and a guide panel. The liquid crystal panel displays an image. The cover bottom accommodates a light source configured to provide light to the liquid crystal panel. The rear cover accommodates the cover bottom. The guide panel is positioned on the cover bottom to support the liquid crystal panel. The cover bottom includes a cover bottom hook which protrudes from a surface of the cover bottom and is fitted to an adjacent latching portion of one of the rear cover or the guide panel. The cover bottom hook protrudes from a bottom side wall of the cover bottom, and includes a protruding portion which protrudes laterally outward from the bottom side wall, and an inclined portion which protrudes outwardly at an incline from the bottom side wall. The inclined portion of the cover bottom hook faces the cover base of the rear cover.

DETAILED DESCRIPTION

Reference will now be made in detail to embodiments of the disclosure examples of which are illustrated in the accompanying drawings.

In the following description, a liquid crystal display device may be implemented in a twisted nematic (TN) mode, a vertical alignment (VA) mode, an in-plane switching (IPS) mode, a fringe field switching (FFS) mode, or an electrically controlled birefringence (ECB) mode depending on configuration of a pixel electrode and a common electrode of a liquid crystal panel.

In the following description, a backlight unit and a liquid crystal display device using the same may be used in diverse fields, for example, a mobile computer such as a laptop, office automated equipment, an audio/video device, an outdoor/indoor advertisement display, a vehicle display, etc.

FIG. 1is a block diagram schematically illustrating a liquid crystal display device according to a first embodiment of the present disclosure, andFIG. 2is a circuit diagram schematically illustrating a subpixel shown inFIG. 1.

As illustrated inFIGS. 1 and 2, a liquid crystal display device includes an image supply110, a timing controller130, a gate driver140, a data driver150, a liquid crystal panel160, a power supply180, and a backlight unit170.

The image supply110processes a data signal and outputs the data signal together with a vertical synchronization signal, a horizontal synchronization signal, a data enable signal, and a clock signal. The image supply110supplies the vertical synchronization signal, the horizontal synchronization signal, the data enable signal, the clock signal, and the data signal to the timing controller130through a Transition Minimized differential Signaling (TMDS) interface.

The timing controller130outputs a gate timing control signal GDC for controlling an operation timing of the gate driver140, and a data timing control signal DDC for controlling an operation timing of the data driver150. In addition to the data timing control signal DDC, the timing controller130supplies a data signal DATA, supplied from the image supply110, to the data driver150.

The gate driver140outputs a gate signal in response to the gate timing control signal GDC supplied from the timing controller130. The gate driver140supplies a gate signal to subpixels SP, included in the liquid crystal panel160, through gate lines GL. The gate driver140may be in the form of an Integrated Circuit (IC) or may be formed in the liquid crystal panel160in a Gate In Panel (GIP) method.

In response to the data timing control signal DDC supplied from the timing controller130, the data driver150samples and latches a data signal DATA in a digital format, converts the digital signal DATA into a gamma reference voltage, and, in turn, outputs a data voltage in an analog format. The data driver140may output a data voltage in each frame period by inverting a polarity of the data voltage. The data driver140supplies a data voltage (or a data signal) to the subpixels, included in the liquid crystal panel160, through data lines SL. The data driver150is formed in the form of an IC.

The power supply180generates and outputs a high potential voltage VCC, a low potential voltage GND, and a common voltage VCOM. The high potential voltage VCC and the low potential voltage GND are supplied to one or more of the timing controller130, the gate driver140, and the data driver150. The common voltage VCOM is supplied to the liquid crystal panel160. The common voltage VCOM is supplied to the subpixels SP through a common voltage line Vcom of the liquid crystal panel160.

The liquid crystal panel160displays an image in response to a gate signal supplied from the gate driver140and a data voltage supplied from the data driver150. The liquid crystal panel160includes subpixels SP that control light provided using the backlight unit170.

Each subpixel includes a switching transistor SW, a storage capacitor Cst, and a liquid crystal layer Clc. The switching transistor SW includes a gate electrode connected to a gate line GL1, and a source electrode connected to a data line SL1. The storage capacitor Cst includes one end connected to a drain electrode of the switching transistor SW, and the other end connected to the common voltage line Vcom. The liquid crystal layer Clc is formed between a pixel electrode1connected to the drain electrode of the switching transistor SW and a common electrode2connected to the common voltage line Vcom.

The backlight unit170provides light to the liquid crystal panel160using a light source which emits light. The backlight unit170includes a light emitting diode (hereinafter, referred to as a Light Emitting Diode (LED)), an LED driver which drives the LED, an LED substrate on which the LED is mounted, a light guide plate which converts light emitted from the LED into a surface light source, a reflective sheet which reflects light in the bottom of the light guide plate, optical sheets which collects and diffuses light emitted from the light guide plate, etc. The backlight unit170may vary a turn-on time and a turn-off time in response to a pulse width modulation signal output from the LED driver.

The above-described liquid crystal display device is being developed as including a white subpixel in addition to a red subpixel, a green subpixel, and a blue subpixel (hereinafter, referred to as a RGBW-type liquid crystal display device). The RGBW-type liquid crystal display device is able to increase brightness of a liquid crystal panel using white subpixels the backlight unit170, and thus it may reduce brightness of the backlight unit170, thereby reducing power consumption.

FIG. 3is an exploded perspective view of a liquid crystal panel module according to the first embodiment of the present disclosure, andFIGS. 4 and 5are diagrams illustrating the front and rear surfaces of a liquid crystal panel module assembly according to the first embodiment of the present disclosure.

As illustrated inFIG. 3, a liquid crystal panel module LCDM according to the first embodiment of the present disclosure includes a rear cover179, an LED substrate178, a cover bottom171, a reflective sheet (or a reflective plate)172, a light guide plate175, optical sheets176, a guide panel177, and a liquid crystal panel160.

The cover bottom171, the LED substrate178, the reflective sheet172, the light guide plate175, and the optical sheets176may be included in a backlight unit170. The backlight unit170is accommodated in the rear cover179, and the liquid crystal panel160sits on the guide panel177secured to the rear cover179.

The reflective sheet172sits inside the cover bottom171. The reflective sheet172reflects light in the bottom of the light guide plate175. The light guide plate175sits on the reflective sheet172. The light guide plate175converts light, emitted from an LED, into a surface light source. The LED substrate178having LEDs189mounted thereon is installed in a light entrance surface (a light entrance unit or a side surface) of the light guide plate175.

The optical sheets176sits on the light guide plate175. The optical sheets176collects and diffuses light emitted from the light guide plate175. The optical sheets176is composed of a plurality of sheets having one or more structure and functions.

The guide panel177sits on the cover bottom171and is coupled to the rear cover179. The guide panel177supports the liquid crystal panel160, and prevents the optical sheets176from moving so that the optical sheets176are safely accommodated and fixed in the cover bottom171. The guide panel177has a frame shape (e.g., having a region exposing a display surface and a region not exposing the display surface) which allows light emitted through the optical sheets176to pass therethrough.

The liquid crystal panel160sits on the guide panel177. The liquid crystal panel160displays an image. The liquid crystal panel160includes a lower substrate in which a switching transistor and the like are formed, an upper substrate in which a color filter and the like are formed, and a liquid crystal layer formed between the lower substrate and the upper substrate.

As illustrated inFIGS. 3 to 5, the liquid crystal panel module LCDM according to the first embodiment of the present disclosure has a display surface (a front surface) in which an image is capable of being displayed. A rear surface of the liquid crystal panel module LCDM is covered by the board-type cover bottom171.

As shown in the enlarged view ofFIG. 5, the present disclosure includes hooks GPH, CBH, and BLH to improve an assembly structure of the liquid crystal panel module LCDM. The hooks GPH, CBH, and BLH are spaced a predetermined distance from each other. The hooks GPH, CBH, and BLH protrude from surfaces so that a guide panel177and a cover bottom171are fitted to latching portions of the rear cover179to be coupled thereto. In the drawings, the order of alignment of the hooks GPH, CBH, and BLH is exemplary, but the roles thereof are as below.

The hook GPH disposed at a section of A1-A2is defined as a first hook or a guide panel hook which helps the guide panel177and the rear cover179to be coupled to each other. The hook CBH disposed at a section of B1-B2is defined as a second hook or a cover bottom hook which helps the cover bottom171and the rear cover179to be coupled to each other. The hook BLH disposed at a section of C1-C2is defined as a third hook or a backlight hook (BLU Hook) which helps the cover bottom171and the rear cover179to be coupled to each other.

FIG. 6is a cross-sectional view showing an A1-A2area shown inFIG. 5, andFIG. 7is a diagram for explaining effects of the first hook shown inFIG. 6.

As illustrated inFIG. 6, the rear cover179, the cover bottom171, the reflective sheet172, the light guide plate175, a lateral reflective sheet173, the optical sheets176, the guide panel177, a foam pad164, and the liquid crystal panel160are partially illustrated in the cross-sectional view of the A1-A2area.

The cover bottom171accommodates the reflective sheet172, the light guide plate175, the lateral reflective sheet173, and the optical sheets176. The cover bottom171may be formed of a metal material having high thermal conductivity. The cover bottom171includes a board-type bottom base171a, and a bottom side wall171b. The bottom base171aand the bottom side wall171bprovide a space which accommodates the reflective sheets172while preventing the same from moving. The reflective sheet172is disposed at the base of the cover bottom171. The light guide plate175is disposed on the reflective sheet172. The lateral reflective sheet173is attached to one lateral surface of the light guide plate175. The optical sheets176are disposed on the light guide plate175.

The rear cover179accommodates the cover bottom171. The rear cover179includes: a cover base179acapable of supporting the bottom base171aof the cover bottom171; and a cover side wall179bacting as a wall which covers the bottom side wall171bof the cover bottom171. The cover base179aand the cover side wall179bprovide a space which accommodates the cover bottom171while preventing the same from moving.

The cover side wall179bincludes a first latching portion RH1into which the first hook GPH of the guide panel177is capable of being inserted. The first latching portion RH1may have a shape of a groove recessed from the cover side wall179bor a hole penetrating the cover side wall179b. The first latching portion RH1may be defined as a panel hook latching portion.

In the present disclosure, each of the first hook GPH and the first latching portion RH1has a rectangular shape, as shown inFIG. 5. However, it is merely an exemplary, and each of the first hook GPH and the first latching portion RH1may have a quadrangular shape including a rectangular shape and a square shape, a trapezoidal shape, an elliptical shape, a circular shape, a polygonal shape, etc.

The liquid crystal panel160includes a lower substrate160aand an upper substrate160bwhich are laminated with a display area AA therebetween. Polarizers including a first polarizer161aand a second polarizer161bare attached to the front and rear surface of the liquid crystal panel160. A side surface sealant163is attached to at least one side surface of the liquid crystal panel160.

The side surface sealant163protects the side surface of the liquid crystal panel160. The side surface sealant163reduces a shock occurring when a side surface of the liquid crystal panel160collides with a side surface of the guide panel177. That is, the side surface sealant163prevents damage caused by an external shock to the liquid crystal panel module LCDM.

The liquid crystal panel160is attached to a panel support177bof the guide panel177by the foam pad164disposed on a non-display area NA. The foam pad164may be formed of an elastic material, and may be in a structure such that an adhesive or a tape is attached to both surfaces of the foam pad164.

The foam pad164may have a shape of a closed-curve frame (edge) corresponding to four surfaces of the liquid crystal panel160. The foam164allows the liquid crystal panel160to be attached and fixed to the panel support177bof the guide panel177, and prevents a foreign substance from coming inside. In addition, The foam pad164may include a black material in order to prevent light leakage which is a leakage of light entering through the light guide plate175to the outside, but aspects of the present disclosure are limited thereto.

The guide panel177supports the liquid crystal panel160and is coupled to the rear cover179. The guide panel177includes a panel support177bsupporting the liquid crystal panel160while preventing the cover bottom171from moving, and a panel side wall177acovering the cover side wall179bof the rear cover179. The guide panel177includes a panel groove GH preventing the upper surface of the cover bottom171from moving or deviating, and the first hook GPH to be inserted into the first latching portion RH1.

A height of the panel side wall177amay correspond to a height of the front surface of the liquid crystal panel160(or a surface height of the second polarizer). For example, the panel side wall177amay extend to a level that is at least equal to a level of the front surface of the liquid crystal panel160. If the height of the panel side wall177acorresponds to the height of the front surface of the liquid crystal panel160, a mechanical protective wall for protecting the liquid crystal panel160from an external shock may be formed. The guide panel177constitutes an external side wall of the liquid crystal module assembly. Thus, in order to externalize the liquid crystal panel module assembly, the panel side wall177amay have a round-shaped edge of an outer wall which does not face the side surface sealant163.

The panel groove GH is disposed at a rear surface of the panel support177bof the guide panel177. The panel groove GH is disposed at a portion corresponding to the upper surface of the cover bottom171, e.g., corresponding to an upper surface of the bottom side wall171bof the cover bottom171. The first hook GPH protrudes inwardly from the panel side wall177ato correspond to a position of a first latching portion RH1provided in the cover side wall surface179b. The first hook GPH includes a protruding portion (e.g., a laterally protruding portion) which protrudes not to be inclined from the panel side wall177a, and an inclined portion which protrudes to be inclined from the panel side wall177a. That is, the protruding portion is not inclined, but instead protrudes inwardly and forms a substantially flat surface, e.g., the upper surface of the first hook GPH, while the inclined portion protrudes at an incline from an inner side surface of the panel side wall177a, as shown inFIG. 6. The protruding portion of the first hook GPH has a surface extending in a direction facing the panel support177b(e.g., an upper surface of the protruding portion extends in a direction facing toward the top in the drawing), and the inclined portion thereof has a surface extending in a direction facing the cover base179a(e.g., a direction toward the bottom in the drawing). As used herein, the term “facing” does not necessarily mean that two surfaces or directions are parallel to one another; instead, a first surface (e.g., the surface of the inclined portion of the first hook GPH) may face second surface or direction (e.g., an upper surface or portion of the cover base179a), even though the surfaces are not parallel to one another, as long as some part of the first surface faces some part of the second surface.

The protruding portion of the first hook GPH is flat in a horizontal direction like the upper side of the first latching portion RH1of the rear cover179, but the inclined portion of the first hook GPH has a slope of a predetermined angle unlike the lower side of the first latching portion RH1of the rear cover179. The first hook GPH provides a structure which alleviates difference in size and rigidity between the guide panel177and the rear cover179and even pressure and stress possibly occurring upon coupling of the guide panel177and the rear cover179due to such difference, and which supplements a coupling force between the guide panel177and the rear cover179.

As illustrated inFIG. 7, the protruding portion of the first hook GHP helps the guide panel177and the rear cover179coupling to each other to maintain a strong coupling force without being easily separated. That is, the protruding portion of the first hook GPH plays a role of preventing the rear cover179and the guide panel177from being easily separated in a direction (the direction toward the bottom in the drawing) opposite to a direction in which the rear cover179and the guide panel177are inserted to be coupled to each other.

In addition, the first hook GPH provides a structure in which the first hook GPH is inserted into the first latching portion RH1by slidably passing the cover side wall179bwhen the guide panel177and the rear cover179are coupled to each other. In this process, in order to make the coupling easier, the upper part of the cover side wall179bmay have an outer side wall with a round-shaped edge to correspond to the position of the first hook GPH, but embodiments of the present disclosure are not limited thereto. The outer side wall is a wall of the cover side wall179bwhich faces the panel side wall177aof the guide panel177.

Thus, the first hook GPH of the guide panel177and the first latching portion RH1of the rear cover179provide an easier coupling structure in an assembling process to modulate the liquid crystal panel, and also helps the guide panel177and the rear cover179to maintain a strong coupling force while preventing the guide panel177and the rear cover179from being easily separated from each other. In addition, a coupling structure in which no space is formed between the guide panel177and the rear cover179is provided, thereby improving adhesion between the guide panel177and the rear cover179. As a result, even a space between a side surface of the liquid crystal panel160and the rear cover179is reduced, and therefore, a bezel may be reduced and exterior design (externalization of mechanism of the front surface) may improve. In addition, as a coupling structure using a hook is provided, assembling efficiency may improve and a re-assembling error rate may be reduced.

FIG. 8is a cross-sectional view of a B1-B2area shown inFIG. 5, andFIG. 9is a diagram for explaining effects of the second hook shown inFIG. 8.

As illustrated inFIG. 8, the rear cover179, the cover bottom171, the reflective sheet172, the light guide plate175, the lateral reflective sheet173, the optical sheets176, the guide panel177, the foam pad164, and the liquid crystal panel160are partially shown in the cross sectional view of the B1-B2area.

The rear cover179accommodates the cover bottom171. The rear cover179includes a cover base179asupporting the bottom base171aof the cover bottom171, and a cover side wall179bacting as a side wall covering the bottom side wall171bof the cover bottom171. The cover base179aand the cover side wall179bprovide a space which accommodates the cover bottom171while preventing the same from moving.

The cover side wall179bhas a second latching portion RH2into which the second hook CBH of the cover bottom171is to be inserted. The second latching portion RH2may have a shape of a groove recessed from the cover side wall179bor a hole penetrating the cover side wall179b. The second latching portion RH2may be defined as a cover bottom hook latching portion.

In the present disclosure, the second hook CBH and the second latching portion RH2may have a trapezoidal shape, as shown inFIG. 5. However, the trapezoidal shape is merely exemplary, and the second hook portion CBH and the second latching portion RH2may have a quadrangular shape, including a rectangular shape and a square shape, an elliptical shape, a circular shape, a polygonal shape, etc.

The cover bottom171accommodates the reflective sheet172, the light guide plate175, the lateral reflective sheet173, and the optical sheets176. The cover bottom171includes a board-type bottom base171a, a bottom side wall171bacting as a wall covering the board-type bottom base171a, and the second hook CBH to be inserted into the second latching portion RH2of the rear cover179. The bottom base171aand the bottom side wall171bprovide a space which accommodates the reflective sheet172while preventing the same from moving.

The second hook CBH includes a protruding portion (e.g., a laterally protruding portion) which protrudes not to be inclined from the bottom side wall171b, and an inclined portion which protrudes to be inclined from the bottom side wall171b. The protruding portion of the second hook CBH protrudes outwardly from the bottom side wall171band has a surface (e.g., an upper surface) that extends in a direction facing the panel support177b(e.g., a direction toward the top in the drawing), and the inclined portion of the second hook CBH has a surface extending in a direction facing the cover base179a(e.g., a direction toward the bottom in the drawing).

The protruding portion of the second hook CBH is flat in a horizontal direction like the upper part of the second latching portion RH2of the rear cover179, but the inclined portion of the second hook CBH has a slope of a predetermined angle unlike the lower part of the second latching portion RH2of the rear cover179. The second hook CBH provides a structure which alleviates difference in size and rigidity between the cover bottom171and the rear cover179and even pressure and stress possibly occurring upon coupling of the cover bottom171and the rear cover179due to such difference, and which supplements a coupling force between the cover bottom171and the rear cover179. The protruding and inclined portions of the second hook CBH are different from the protruding and inclined portions of the first hook GPH in terms of protruding and inserted positions, but have similar or identical shapes to those of the protruding and inclined portions of the first hook GPH. That is, each of the second hook CBH and the first hook GPH has a portion which protrudes from a surface and which is inclined facing the cover base179aof the rear cover179.

As illustrated inFIG. 9, the protruding portion of the second hook CBH helps the cover bottom171and the rear cover179being coupled thereto to maintain a strong coupling force without being easily separated. That is, the protruding portion of the second hook CBH plays a role of preventing the rear cover179and the cover bottom171from being easily separated in a direction (the direction toward the bottom in the drawing) opposite to a direction in which the rear cover179and the cover bottom171are inserted to be coupled to each other.

In addition, the second hook CBH provides a structure in which the second hook CBH is inserted into the second latching portion RH2by slidably passing the cover side wall179bwhen the cover bottom171and the rear cover179are coupled to each other. In this process, in order to make the coupling easier, the upper part of the cover side wall179bmay have an inner side wall with a round-shaped edge to correspond to the position of the second hook CBH, but embodiments of the present disclosure are not limited thereto. The inner side wall is a wall of the cover side wall179bof the rear cover179which faces the bottom side wall171bof the cover bottom171.

Thus, the second hook CBH of the cover bottom171and the second latching portion RH2of the rear cover179provide an easier coupling structure in an assembling process to modulate the liquid crystal panel, and also helps the cover bottom171and the rear cover179to maintain a strong coupling force while preventing the cover bottom171and the rear cover179from being easily separated from each other. In addition, a coupling structure in which no space is formed between the cover bottom171and the rear cover179is provided, thereby improving adhesion between the cover bottom171and the rear cover179. As a result, even a space between a side surface of the liquid crystal panel160and the rear cover179is reduced, and therefore, a bezel may be reduced and exterior design (externalization of mechanism of the front surface) may improve. In addition, as a coupling structure using a hook is provided, assembling efficiency may improve and a re-assembling error rate may be reduced.

FIG. 10is a cross-sectional view of the C1-C2area shown inFIG. 5.

As illustrated inFIG. 10, the rear cover179, the cover bottom171, the reflective sheet172, the light guide plate175, the lateral reflective sheet173, the optical sheets176, the guide panel177, the foam pad164, and the liquid crystal panel160are partially shown in the cross-sectional view of the C1-C2area.

The rear cover179accommodates the cover bottom171. The rear cover179includes a cover base179asupporting the bottom base171aof the cover bottom171, and a cover side wall179bacting as a side wall covering the bottom side wall171bof the cover bottom171.

The cover base179aand the cover side wall179bprovide a space which accommodates the cover bottom171while preventing the same from moving. The cover side wall179bhas a third latching portion RH3into which the third hook BLH of the cover bottom171is to be inserted. The third latching portion RH3may have a shape of a groove recessed from the cover side wall179bor a hole penetrating the cover side wall179b. The third latching portion RH3may be defined as a backlight hook latching portion.

In some embodiments of the present disclosure, each of the third hook BLH and the third latching portion RH3has a rectangular shape, as shown inFIG. 5. However, the rectangular shape is merely an exemplary, and each of the third hook BLH and the third latching portion RH3may have a quadrangular shape including a rectangular shape and a square shape, a trapezoidal shape, an elliptical shape, a circular shape, a polygonal shape, etc.

The cover bottom171accommodates the reflective sheet172, the light guide plate175, the lateral reflective sheet173, and the optical sheets176. The cover bottom171includes a board-type bottom base171a, a bottom side wall171bacting as a wall covering the board-type bottom base171a, and the third hook BLH to be inserted into the third latching portion RH3of the rear cover179. The bottom base171aand the bottom side wall171bprovide a space which accommodates the reflective sheet172while preventing the same from moving.

The third hook BLH includes a protruding portion (e.g., a laterally protruding portion) which protrudes not to be inclined from the bottom side wall171b, and an inclined portion which protrudes to be inclined from the bottom side wall171b. The protruding portion of the third hook BLH protrudes outwardly from the bottom side wall171band has a surface (e.g., a lower surface) that extends in a direction facing the cover base179a(e.g., a direction toward the bottom in the drawing), and the inclined portion thereof has a surface extending in a direction facing the panel support177b(a direction toward the top in the drawing). The protruding portion of the third hook BLH is flat in a horizontal direction like the lower part of the third latching portion RH3of the rear cover179, but the inclined portion of the third hook BLH has a slope of a predetermined angle unlike the upper part of the third latching portion RH3of the rear cover179.

The third hook BLH and the second hook CBH are disposed at the cover bottom171. However, the protruding and inclined portions of the third hook BLH have shapes opposite to those of the protruding and inclined portions of the second shook CBH. That is, the protruding and inclined portions of the third hook BLH has shapes which is like the protruding and inclined portions of the second hook CBH rotated by 180 degrees. Since the third hook BLH and the second hook CBH have opposite shapes, this may further increase a coupling force between the cover bottom171and the rear cover179.

Thus, the third hook BLH of the cover bottom171and the third latching portion RH3of the rear cover179provide an easier coupling structure in an assembling process to modulate the liquid crystal panel, and also helps the cover bottom171and the rear cover179to maintain a strong coupling force while preventing the cover bottom171and the rear cover179from being easily separated from each other.

FIGS. 11 and 12are diagrams illustrating examples of arrangement of the first, second, and third hooks.

As illustrated inFIGS. 5 and 11, the first, second, and third hooks GPH, CBH, and BLH may be a plurality of hooks disposed at three surfaces of the liquid crystal panel module LCDM. For example, the first, second, and third hooks GPH, CBH, and BLH may be a plurality of hooks disposed at a left side surface PP1, a right side surface PP2, and an upper surface PP3of the liquid crystal panel module LCDM. In this case, the first, second, and third hooks GPH, CBH, and BLH may be arranged such that each hook is disposed at a particular point or at least two or three hooks are disposed at a particular point, but embodiments of the present disclosure are not limited thereto. In some embodiments, each of the left side surface PP1, the right side surface PP2, and the upper surface PP3may include at least one of each of the first, second, and third hooks GPH, CBH, BLH.

As illustrated inFIGS. 5 and 12, the first, second, and third hooks GPH, CBH, and BLH may be a plurality hooks disposed at two surfaces of the liquid crystal panel module LCDM. For example, the first, second, and third hooks GPH, CBH, and BLH may be a plurality of hooks disposed at a right side surface PP2and an upper surface PP3of the liquid crystal panel module LCDM. In this case, the first, second, and third hooks GPH, CBH, and BLH may be provided such that each hook is disposed at a particular point or at least two or three hooks are disposed at a particular point, but aspects of the present disclosure are not limited thereto. In some embodiments, each of the right side surface PP2and the upper surface PP3may include at least one of each of the first, second, and third hooks GPH, CBH, BLH.

As illustrated inFIGS. 11 and 12, the first, second, and third hooks GPH, CBH, and BLH may be a plurality hooks to provide a coupling force corresponding to the size of the liquid crystal panel160, or may be provided as an individual hook or a group of hooks.

At least one of the first, second, and third hooks GPH, CBH, and BLH described with reference toFIGS. 5 and 12supplements a coupling force between the guide panel177and the rear cover179in response to occurrence of a size deviation of the rear cover179. In one example, if the rear cover179has a small size, the second hook CBH supplements a coupling force between the guide panel177and the rear cover179. In another example, if the rear cover179has a large size, the first hook GPH supplements a coupling force between the guide panel177and the rear cover179.

FIG. 13is a diagram illustrating a rear surface of a liquid crystal panel module assembly according to a second embodiment of the present disclosure,FIG. 14is a cross-sectional view of an A3-A4area shown inFIG. 13, andFIG. 15is a cross-sectional view of a B3-B4area shown inFIG. 13.

As illustrated inFIG. 13, the liquid crystal panel module LCDM according to the second embodiment of the present disclosure may include a display surface (a front surface) in which an image is capable of being displayed. A rear surface of the liquid crystal panel module LCDM is covered by a board-type cover bottom171.

As illustrated in the enlarged view ofFIG. 13, the liquid crystal panel module LCDM includes hooks GPH, CBH, and BLH for improving an assembling structure. The hooks GPH, CBH, and BLH are spaced a predetermined apart from each other. The hooks GPH, CBH, and BLH respectively protrude from surfaces so that a guide panel177and a cover bottom171are fitted to latching portions of the rear cover179to be coupled thereto. In the drawings, the order of arrangement of the hooks GPH, CBH, and BLH are merely exemplary, but the roles thereof may be defined as below.

The hook GPH disposed at a cross section of A3-A4is defined as a first hook or a guide panel hook which helps the guide panel177and the rear cover179to be coupled to each other. The hook CBH disposed at a cross section of B3-B4is defined as a second hook or a cover bottom hook which helps the cover bottom171and the rear cover179to be coupled to each other. The hook BLH is defined as a third hook or a BLU hook which helps the cover bottom171and the rear cover179to be coupled to each other. The hook BLH may be formed in the same structure as shown in the first embodiment, and thus a description thereof will be herein omitted.

As illustrated inFIG. 14, the rear cover179, the cover bottom171, the reflective sheet172, the light guide plate175, the lateral reflective sheet173, optical sheets176, a guide panel177, the foam pad164, and the liquid crystal panel160are partially shown in the cross section of the A3-A4area.

The cover bottom171accommodates the reflective sheet172, the light guide plate175, the lateral reflective sheet173, and the optical sheets176. The cover bottom171may be formed of a metal material having high thermal conductivity. The cover bottom171includes a board-type bottom base171a, and a bottom side wall171b. The bottom base171aand the bottom side wall171bprovide a space which accommodates the reflective sheets172while preventing the same from moving. The reflective sheet172is disposed at the base of the cover bottom171. The light guide plate175is disposed on the reflective sheet172. The lateral reflective sheet173is attached to one side surface of the light guide plate175. The optical sheets176are disposed on the light guide plate175.

The rear cover179accommodates the cover bottom171. The rear cover179includes a cover base179acapable of supporting the bottom base171aof the cover bottom171, and a cover side wall179bacting as a wall covering the bottom side wall171bof the cover bottom171, and a cover protruding surface179csupporting the guide panel177. The cover base179aand the cover side wall179bprovide a space which accommodates the cover bottom171while preventing the same from moving. The cover side wall179bincludes a first latching portion RH1into which the first hook GPH of the guide panel177is capable of being inserted. The first latching portion RH1may have a shape of a groove recessed from the cover side wall179bor a hole penetrating the cover side wall179b. The first latching portion RH1may be defined as a panel hook latching portion.

In the present disclosure, each of the first hook GPH and the first latching portion RH1may have a rectangular shape, as shown inFIG. 13. However, this is merely an exemplary, and each of the first hook GPH and the first latching portion RH1may have a quadrangular shape including a rectangular shape and a square shape, a trapezoidal shape, an elliptical shape, a circular shape, a polygonal shape, etc.

The liquid crystal panel160includes a lower substrate160aand an upper substrate160bwhich are laminated with a display area AA therebetween. Polarizers161including a first polarizer161aand a second polarizer161bare attached to the front and rear surfaces of the liquid crystal panel160. A side surface sealant163is attached to at least one side surface of the liquid crystal panel160.

The side surface sealant163protects the side surface of the liquid crystal panel160. The side surface sealant163reduces a shock when a side surface of the liquid crystal panel160collides with a side surface of the guide panel177. That is, the side surface sealant163prevents damage caused by an external shock to the liquid crystal panel module LCDM.

The liquid crystal panel160is attached to a panel support177bof the guide panel177by the foam pad164disposed on a non-display area NA. The foam pad164may be formed of an elastic material, and may be in a structure such that an adhesive or a tape is attached to both surfaces of the foam pad164.

The foam pad164may have a shape of a closed-curve frame (edge) corresponding to four surfaces of the liquid crystal panel160. The foam164allows the liquid crystal panel160to be attached and fixed to the panel support177bof the guide panel177, and prevents a foreign substance from coming inside. In addition, The foam pad164may include a black material in order to prevent light leakage which is a leakage of light entering through the light guide plate175to the outside, but aspects of the present disclosure are limited thereto.

The guide panel177supports the liquid crystal panel160and is coupled to the rear cover179. The guide panel177includes a panel support177bsupporting the liquid crystal panel160while preventing the cover bottom171from moving, and a panel side wall177acovering the cover side wall179bof the rear cover179. The guide panel177includes a panel groove GH preventing the upper surface of the cover bottom171from moving or deviating, and the first hook GPH to be inserted into the first latching portion RH1.

The guide panel177constitutes an outer wall of a liquid crystal panel module assembly. Thus, for externalization of the liquid crystal panel module assembly, the guide panel177may have a shape in which the panel side wall177adoes not protrude so that the side surface sealant163attached to the liquid crystal panel160is exposed to the outside. The side surface sealant163may protect a side surface of the liquid crystal panel160from a shock, and thus, the panel side wall177adoes not need to have a height corresponding to the liquid crystal panel160. Thus, it is enough to configure a side wall capable of forming the first hook GPH while being supported by the cover protruding surface179cwithout protruding from the panel support177b. In addition, the panel support177bhas only a recessed portion which is recessed low enough to prevent the foam pad164attached to the front surface from being deviated.

The panel groove GH is disposed at a rear surface of the panel support177bof the guide panel177. The panel groove GH is disposed at a portion corresponding to the upper surface of the cover bottom171, e.g., corresponding to an upper surface of the bottom side wall171bof the cover bottom171. The first hook GPH protrudes inwardly from the panel side wall177ato correspond to a position of a first latching portion RH1provided in the cover side wall179b. The first hook GPH includes a protruding portion (e.g., a laterally protruding portion) which protrudes not to be inclined from the panel side wall177a, and an inclined portion which protrudes to be inclined from the panel side wall177a. That is, the protruding portion is not inclined, but instead protrudes inwardly and forms a substantially flat surface, e.g., the upper surface of the first hook GPH, while the inclined portion protrudes at an incline from an inner side surface of the panel side wall177a, as shown inFIG. 14. The protruding portion of the first hook GPH has a surface extending in a direction facing the panel support177b(e.g., an upper surface of the protruding portion extends in a direction facing toward the top in the drawing), and the inclined portion thereof has a surface extending in a direction facing the cover base179a(e.g., a direction toward the bottom in the drawing).

The protruding portion of the first hook GPH is flat in a horizontal direction like the upper side of the first latching portion RH1of the rear cover179, but the inclined portion of the first hook GPH has a slope of a predetermined angle unlike the lower side of the first latching portion RH1of the rear cover179. The first hook GPH provides a structure which alleviates difference in size and rigidity between the guide panel177and the rear cover179and even pressure and stress possibly occurring upon coupling of the guide panel177and the rear cover179due to such difference, and which supplements a coupling force between the guide panel188and the rear cover179.

The protruding portion of the first hook GHP helps the guide panel177and the rear cover179coupling to each other to maintain a strong coupling force without being easily separated. That is, the protruding portion of the first hook GPH plays a role of preventing the rear cover179and the guide panel177from being easily separated in a direction (the direction toward the bottom in the drawing) opposite to a direction in which the rear cover179and the guide panel177are inserted to be coupled to each other. In addition, the first hook GPH provides a structure in which the first hook GPH is inserted into the first latching portion RH1by slidably passing the cover side wall179bwhen the guide panel177and the rear cover179are coupled to each other. In this process, in order to make the coupling easier, the upper part of the cover side wall179bmay have an outer side wall with a round-shaped edge to correspond to the position of the first hook GPH, but embodiments of the present disclosure are not limited thereto. The outer side wall is a wall of the cover side wall179bwhich faces the panel side wall177aof the guide panel177.

Thus, the first hook GPH of the guide panel177and the first latching portion RH1of the rear cover179provide an easier coupling structure in an assembling process to modulate the liquid crystal panel, and also helps the guide panel177and the rear cover179to maintain a strong coupling force while preventing the guide panel177and the rear cover179from being easily separated from each other. In addition, there is provided a coupling structure in which no space is formed between the guide panel177and the rear cover179, thereby improving adhesion between the guide panel177and the rear cover179. In addition, the guide panel177may help externalization with a structure in which the side surface sealant163attached to the liquid crystal panel160is exposed to the outside. As a result, even a space between a side surface of the liquid crystal panel160and the rear cover179is reduced, and therefore, a bezel may be reduced and exterior design may improve. In addition, as a coupling structure using a hook is provided, assembling efficiency may improve and a re-assembling error rate may be reduced.

As illustrated inFIG. 15, the rear cover179, the cover bottom171, the reflective sheet172, the light guide plate175, the lateral reflective sheet173, the optical sheets176, the guide panel177, the foam pad164, and the liquid crystal panel160are partially shown in the cross sectional view of the B3-B4area.

The rear cover179accommodates the cover bottom171. The rear cover179includes a cover base179asupporting the bottom base171aof the cover bottom171, a cover side wall179bacting as a side wall covering the bottom side wall171bof the cover bottom171, and a cover protruding surface179csupporting the guide panel177. The cover base179aand the cover side wall179bprovide a space which accommodates the cover bottom171while preventing the same from moving. The cover side wall179bhas a second latching portion RH2into which the second hook CBH of the cover bottom171is to be inserted. The second latching portion RH2may have a shape of a groove recessed from the cover side wall179bor a hole penetrating the cover side wall179b. The upper part of the second latching portion RH2is flat in a horizontal direction, but the lower part thereof is inclined. The second latching portion RH2may be defined as a cover bottom hook latching portion.

In some embodiments of the present disclosure, the second hook CBH and the second latching portion RH2may have a trapezoidal shape, as shown inFIG. 13. However, the shape is merely exemplary, and the second hook portion CBH and the second latching portion RH2may have a quadrangular shape including a rectangular shape and a square shape, a trapezoidal shape, an elliptical shape, a circular shape, a polygonal shape, etc.

The cover bottom171accommodates the reflective sheet172, the light guide plate175, the lateral reflective sheet173, and the optical sheets176. The cover bottom171includes a board-type bottom base171a, a bottom side wall171bacting as a wall covering the board-type bottom base171a, and the second hook CBH to be inserted into the second latching portion RH2of the rear cover179. The bottom base171aand the bottom side wall171bprovide a space which accommodates the reflective sheet172while preventing the same from moving.

The second hook CBH includes a protruding portion (e.g., a laterally protruding portion) which protrudes not to be inclined from the bottom side wall171b, and an inclined portion which protrudes to be inclined from the bottom side wall171b. The protruding portion of the second hook CBH protrudes outwardly from the bottom side wall171band has a surface (e.g., an upper surface) that extends in a direction facing the panel support177b(e.g., a direction toward the top in the drawing), and the inclined portion of the second hook CBH has a surface extending in direction facing the cover base179a(e.g., a direction toward the bottom in the drawing).

The protruding portion of the second hook CBH is flat in a horizontal direction like the upper part of the second latching portion RH2of the rear cover179, but the inclined portion of the second hook CBH has a slope of a predetermined angle like the lower part of the second latching portion RH2of the rear cover179. The second hook CBH provides a structure which alleviates difference in size and rigidity between the guide panel177and the rear cover179and even pressure and stress possibly occurring upon coupling of the guide panel177and the rear cover179due to such difference, and which supplements a coupling force between the guide panel188and the rear cover179. The protruding and inclined portions of the second hook CBH are different from the protruding and inclined portions of the first hook GPH in terms of protruding and inserted positions, but have similar or identical shapes to those of the protruding and inclined portions of the first hook GPH. That is, each of the second hook CBH and the first hook GPH has a portion which protrudes from a surface and which is inclined facing the cover base179aof the rear cover179.

The protruding portion of the second hook CBH helps the cover bottom171and the rear cover179being coupled thereto to maintain a strong coupling force without being easily separated. That is, the protruding portion of the second hook CBH plays a role of preventing the rear cover179and the cover bottom171from being easily separated in a direction (the direction toward the bottom in the drawing) opposite to a direction in which the rear cover179and the cover bottom171are inserted to be coupled to each other. In addition, the second hook CBH provides a structure in which the second hook CBH is inserted into the second latching portion RH2by slidably passing the cover side wall179bwhen the cover bottom171and the rear cover179are coupled to each other. In this process, in order to make the coupling easier, the upper part of the cover side wall179bmay have an inner side wall with a round-shaped edge to correspond to the position of the second hook CBH, but embodiments of the present disclosure are not limited thereto. The inner side wall is a wall of the cover side wall179bof the rear cover179which faces the bottom side wall171bof the cover bottom171.

Thus, the second hook CBH of the cover bottom171and the second latching portion RH2of the rear cover179provide an easier coupling structure in an assembling process to modulate the liquid crystal panel, and also helps the cover bottom171and the rear cover179to maintain a strong coupling force while preventing the cover bottom171and the rear cover179from being easily separated from each other. In addition, there is provided a coupling structure in which no space is formed between the cover bottom171and the rear cover179, thereby improving adhesion between the cover bottom171and the rear cover179. In addition, the guide panel177may help externalization with a structure in which the side surface sealant163attached to the liquid crystal panel160is exposed to the outside. As a result, even a space between a side surface of the liquid crystal panel160and the rear cover179is reduced, and therefore, a bezel may be reduced and exterior design may improve. In addition, as a coupling structure using a hook is provided, assembling efficiency may improve and a re-assembling error rate may be reduced.

FIG. 16is a diagram illustrating a rear surface of a liquid crystal panel assembly according to a third embodiment of the present disclosure, andFIG. 17is a cross sectional view of a B5-B6area shown inFIG. 16.

As illustrated inFIG. 16, a liquid crystal panel module LCDM according to the third embodiment of the present disclosure includes a display surface (a front surface) in which an image is capable of being displayed. A rear surface of the liquid crystal panel module LCDM is covered by a board-type cover bottom171.

As illustrated in the enlarged view ofFIG. 16, the liquid crystal panel module LCDM includes hooks CBH and RCH for improving an assembly structure. The hooks CBH and RCH are disposed at the same location. The hooks CBH and RCH respectively protrude from surfaces so that the cover bottom171and a rear cover179are fitted into latching portions of a guide panel177to be coupled thereto.

The hook CBH disposed at a cross section of B5-B6is defined as a second hook or a cover bottom hook which helps the cover bottom and the rear cover179to be coupled thereto. The hook RCH is defined as a fourth hook or a rear cover hook which helps the rear cover179and the cover bottom171to be coupled to thereto.

As illustrated inFIG. 17, the rear cover179, the cover bottom171, the reflective sheet172, the light guide plate175, the protective pad174, the lateral reflective sheet173, the optical sheets176, the guide panel177, the foam pad164, and the liquid crystal panel160are partially shown in the cross section of the B5-B6area.

The cover bottom171accommodates the reflective sheet172, the light guide plate175, the lateral reflective sheet173, and the optical sheets176. The cover bottom171includes a board-type bottom base171a, a bottom side wall171bacting as a wall covering the board-type bottom base171a, and the second hook CBH to be inserted into a fourth latching portion GHH1of the guide panel177. The bottom base171aand the bottom side wall171bprovide a space which accommodates the reflective sheet172while preventing the same from moving.

The rear cover179accommodates the cover bottom171and the guide panel177. The rear cover179includes a cover base179asupporting the bottom base171aof the cover bottom171, and a cover side wall179bacting as a wall covering the panel side wall177aof the guide panel177. The cover side wall179bof the rear cover179has a wall corresponding to a height of the front surface of the liquid crystal panel160, unlike the first and second embodiments. The cover base179aand the cover side wall179bprovide a space which accommodates the cover bottom171and the guide panel177while preventing the same from moving. The cover side wall179bincludes a fourth hook RCH to be inserted into the fourth latching portion GHH1of the guide panel177.

The liquid crystal panel160includes a lower substrate160aand an upper substrate160bcoupled to each other with a display area AA therebetween. Polarizers161including a first polarizer161aand a second polarizer161bare attached to the front and rear surfaces of the liquid crystal panels160. A side surface sealant163is attached to at least one surface of the liquid crystal panel160.

The side surface sealant163protects a side surface of the liquid crystal panel160. The side surface sealant163alleviates a shock occurring when a side surface of the liquid crystal panel160collides with a side surface of the guide panel177. That is, the side surface sealant163prevents a damage caused by an external shock to the liquid crystal module LCDM.

The liquid crystal panel160is attached to the panel supporting surface177bof the guide panel177by the foam pad164which is disposed at a non-display area NA. The foam pad164may be formed of an elastic material, and may be in a structure in which an adhesive or a tape is attached to both surfaces of the foam pad164.

The foam pad164may have a shape of a closed-curve frame (edge) corresponding to four surfaces of the liquid crystal panel160. The foam pad164allows the liquid crystal panel160to be attached and fixed to the panel support177bof the guide panel177, and prevents a foreign substance from coming inside. In addition, the foam pad164may include a black material in order to prevent light leakage which is a leakage of light entering through the light guide plate175to the outside, but embodiments of the present disclosure are limited thereto.

The guide panel177is accommodated by the rear cover179, and has a shape in which the panel side wall177adoes not protrude so that the side surface sealant163attached to the liquid crystal panel160is not exposed to the outside. Thus, it is enough to configure the panel side wall177ajust as a side wall that forms the fourth latching portion GHH1without protruding from the panel support177b. In addition, the panel support177bhas a protruding portion that protrudes from an inner end of the panel support177bto have a height which is low enough not to cause the foam pad164attached to the front surface to move inside. The panel groove GH is positioned on the rear surface of the panel support177bof the guide panel177. The panel groove GH is positioned at a portion corresponding to the top surface of the cover bottom171.

The guide panel177supports the liquid display panel160, and provides a space in which the cover bottom171and the rear cover179are coupled thereto. The guide panel177includes: a panel support177bwhich supports the liquid crystal panel160while preventing the cover bottom171from moving; and a panel side wall177awhich surrounds the bottom side wall171bof the cover bottom171. The guide panel177includes: a panel groove GH which prevents an upper surface of the cover bottom171from moving or being deviated; and a fourth latching portion GHH1in which the second hook CBH of the cover bottom171and the fourth hook RCH of the rear cover179are coupled to each other upon insertion. The fourth latching portion GHH1may have a hole shape penetrating the panel side wall177a. The fourth latching portion GHH1may be defined as a hook latching portion of the cover bottom171and the rear cover179.

In some embodiments of the present disclosure, each of the second hook CBH, the fourth hook RCH, and the fourth latching portion GHH1may be formed in a trapezoidal shape, as shown inFIG. 17. However, this is merely exemplary, and each of the second hook CBH, the fourth hook RCH, and the fourth latching portion GHH1may be a quadrangular shape including a rectangular shape and a square shape, an elliptical shape, a circular shape, a polygonal shape, etc.

The second hook CBH includes a protruding portion (e.g., a laterally protruding portion) which protrudes not to be inclined from the bottom side wall171b, and an inclined portion which protrudes to be inclined from the bottom side wall171b. The protruding portion of the second hook CBH outwardly from the bottom side wall171band has a surface (e.g., an upper surface) that extends in a direction facing the panel support177b(e.g., a direction toward the top in the drawing), and the inclined portion of the second hook CBH has a surface extending in a direction facing the cover base179a(e.g., a direction toward the bottom in the drawing). The protruding portion of the second hook CBH is flat in a horizontal direction, and the inclined portion of the second hook CBH has a slope of a predetermined angle like the lower part of the fourth latching portion GHH1of the guide panel177. The second hook CBH is coupled to the fourth hook RCH of the rear cover in the fourth latching portion GHH1of the guide panel177. The second hook CBH provides a structure which alleviates difference in size and rigidity between the cover bottom171and the guide panel177and even pressure and stress possibly occurring upon coupling of the cover bottom171and the guide panel177due to such difference, and which supplements a coupling force between the cover bottom171and the guide panel177.

The fourth hook RCH of the rear cover179protrudes inwardly from the cover side wall179bto correspond to the position of the fourth latching portion GHH1of the guide panel177. The fourth hook RCH of the rear cover179is depicted as protruding at a position higher than a position of the second hook CBH of the cover bottom171, but their position relationship may be opposite in various embodiments according to an assembling method.

The fourth hook RCH includes an inclined portion which protrudes at an incline from an inner surface of the cover side wall179b, and a protruding portion which protrudes not to be inclined from the cover side wall179b. The inclined portion of the fourth hook RCH has a surface extending in direction facing the panel support177b(e.g., a direction toward the top in the drawing), and the protruding portion of the fourth hook RCH has a surface extending in a direction facing the cover base179a, that is, a direction opposite to that of the inclined portion (e.g., a direction toward the bottom in the drawing), or a direction facing the protruding portion of the second hook CBH of the cover bottom171. The inclined portion of the fourth hook RCH has a slope of a predetermined angle like the upper part of the fourth latching portion GHH1of the guide panel177, and the protruding portion of the fourth hook RCH is flat in a horizontal direction. The fourth hook RCH is coupled to the second hook CBH to thereby help the cover bottom171, the guide panel177, and the rear cover179to be coupled to each other.

Thus, the second hook CBH of the cover bottom171and the fourth hook RCH of the rear cover179provides an easier coupling structure in an assembling process to modulate the liquid crystal panel, and helps the cover bottom171, the guide panel177, and the rear cover179to maintain a strong coupling force while preventing the cover bottom171, the guide panel177, and the rear cover179from being easily separated from each other. In addition, there is provided a coupling structure in which no space is formed between the cover bottom171, the guide panel177, and the rear cover179, thereby improving adhesion therebetween. In addition, the guide panel177may help externalization with a structure in which the side surface sealant163attached to the liquid crystal panel160is exposed to the outside. As a result, even a space between a side surface of the liquid crystal panel160and the rear cover179is reduced, and therefore, a bezel may be reduced and exterior design may improve. In addition, as a coupling structure using a hook is provided, assembling efficiency may improve and a re-assembling error rate may be reduced.

The present disclosure provides an easier coupling structure in an assembling process to modulate the liquid crystal panel, and also helps components to maintain a strong coupling force while preventing the components from being easily separated from each other. In addition, the present disclosure provides a coupling structure in which no space is formed between mechanisms, thereby improving adhesion therebetween. As a result, even a space between a side surface of the liquid crystal panel and the rear cover is reduced, and therefore, a bezel may be reduced and exterior design may improve. In addition, the present disclosure provides a coupling structure using hooks, and assembling efficiency may be improved and a re-assembling error rate may be reduced.