KR101686555B1 - Liquid Crystal Display Device - Google Patents

Abstract

A backlight unit including a liquid crystal panel, a light guide plate positioned below the liquid crystal panel, and a light source unit positioned next to the light guide plate, a storage unit for storing the backlight unit, and a light source unit can be taken out from the storage unit, A first case including a through hole through which the light source passes so as to allow the light source to pass therethrough, and a second case coupled to the first case.
According to the present invention, since the light source unit can be easily separated from the liquid crystal display device and the light source unit can be easily coupled to the liquid crystal display, it is possible to improve the ease and convenience of repairing and replacing the light source unit Can be achieved.

Description

[0001] The present invention relates to a liquid crystal display device,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a liquid crystal display device for displaying an image using a change in transmittance of liquid crystal.

Liquid crystal display devices have a wide variety of applications ranging from notebook computers, monitors, spacecrafts and aircraft to the advantages of low power consumption and low power consumption and being portable. Such a liquid crystal display device includes a liquid crystal panel and a backlight unit for supplying light to the liquid crystal panel.

The liquid crystal panel includes a first substrate on which a color filter array is formed, a second substrate on which a thin film transistor (TFT) array is formed, and a liquid crystal (LC) layer formed between the first substrate and the second substrate. ) Layer.

The backlight unit includes a light source for supplying light to the liquid crystal panel and an optical sheet for uniformly supplying light emitted from the light source toward the liquid crystal panel.

The liquid crystal display device includes a first case and a second case. The liquid crystal display may be assembled by disposing the backlight unit and the liquid crystal panel in the first case, and then attaching the second case to the first case.

Here, the liquid crystal display according to the related art has the following problems.

First, when the light source is not normally operated after the assembly of the liquid crystal display device according to the related art is confirmed that the light source is defective or the light source is damaged during assembly or use, The light source is repaired or replaced with a new light source, and the liquid crystal display device is reassembled. This problem occurs even when the life of the light source is exhausted.

Second, there is a risk that the first case, the second case, the optical sheet, and the like may be damaged in disassembling and reassembling the liquid crystal display device. For example, the first case and the second case may be damaged by an excessive force applied to the first case and the second case, and the first case and the second case may be damaged, and the optical sheet may be scratched, The optical sheet may be damaged. If the first case, the second case, the optical sheet, and the like are damaged as described above, it is necessary to repair, replace, and so on the damaged components. If the degree of damage is severe, there is a problem that the entire backlight unit needs to be replaced or the liquid crystal display itself needs to be replaced.

Third, since the fixing tape for fixing the optical sheet can not be reused in the process of reassembling the liquid crystal display device, a material cost for the fixing tape is additionally generated.

It is an object of the present invention to provide a liquid crystal display device capable of easily separating a light source from a liquid crystal display device and easily coupling a light source to a liquid crystal display device will be.

In order to achieve the above-mentioned object, the present invention can include the following configuration.

A liquid crystal display device according to the present invention comprises a liquid crystal panel in which a liquid crystal layer is formed between a first substrate and a second substrate, a backlight unit including a light source portion positioned beside the light guide plate and a light guide plate positioned below the liquid crystal panel, And a second case coupled to the first case. The first case may be formed with a through hole through which the light source unit is passed so that the light source unit can be taken out from the receiving unit or inserted into the receiving unit in a state where the second case is coupled.

According to the present invention, the following effects can be achieved.

It is possible to separate the light source unit from the liquid crystal display device and to couple the light source unit to the liquid crystal display device without disassembling the first case, the second case, the liquid crystal panel, the light guide plate, etc., It is possible to achieve the effect of improving the ease and convenience of the apparatus.

1 is a schematic exploded perspective view of a liquid crystal display device according to the present invention.
2 is a schematic perspective view of a liquid crystal display according to the present invention.
Fig. 3 is a schematic view showing the state of use of the liquid crystal display according to the present invention
Figure 4 is a schematic perspective view of a mating member according to the present invention;
5 is a schematic plan view showing a coupling relationship between the light source unit, the coupling member, and the first case according to the present invention.
FIG. 6 is an enlarged cross-sectional view of part B of FIG. 5 relating to a coupling member according to a modified embodiment of the present invention
7 is a schematic side view of the coupling relationship of the light source unit in the liquid crystal display device according to the present invention
8 is a schematic side view of a coupling relationship of a light source portion in a liquid crystal display according to a modified embodiment of the present invention
9 is a schematic perspective view of the auxiliary case according to the present invention;

Hereinafter, preferred embodiments of the liquid crystal display according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic exploded perspective view of a liquid crystal display device according to the present invention, FIG. 2 is a schematic assembled perspective view of a liquid crystal display device according to the present invention, FIG. 3 is a schematic usage state view of a liquid crystal display device according to the present invention, FIG. 4 is a schematic perspective view of a coupling member according to the present invention, FIG. 5 is a schematic plan view showing a coupling relationship between the light source portion, the coupling member, and the first case according to the present invention, FIG. 7 is a schematic side view illustrating a coupling relationship of a light source unit in a liquid crystal display device according to the present invention, and FIG. 8 is a cross-sectional view of a liquid crystal display device according to a modified embodiment of the present invention. FIG. 9 is a schematic perspective view of the auxiliary case according to the present invention. FIG.

1, a liquid crystal display device 1 according to the present invention includes a liquid crystal panel 2, a backlight unit 3, a first case 4, and a second case 5.

The liquid crystal panel 2 can display an image using a change in the transmittance of the liquid crystal. The liquid crystal panel 2 includes a first substrate 21 on which a color filter array is formed, a second substrate 22 on which a thin film transistor array is formed, and a liquid crystal layer 23 formed between the first substrate and the second substrate . The liquid crystal display device 1 according to the present invention can be applied to a liquid crystal display device such as a liquid crystal panel 2 such as TN (Twisted Nematic) mode, VA (Vertical Alignment) mode, IPS (In plane switching) mode, FFS Various types of liquid crystal panels 2 known in the art can be applied.

The backlight unit (3) supplies light to the liquid crystal panel (2). The backlight unit 3 may be installed in the first case 4 so as to be positioned below the liquid crystal panel 2. The backlight unit 3 may include a light guide plate 31 and a light source unit 32.

The light guide plate 31 transmits the light emitted from the light source unit 32 to the liquid crystal panel 2. The light guide plate 31 may change the light path so that the light emitted from the light source unit 32 can be supplied to the liquid crystal panel 2. To this end, the light guide plate 31 may be formed with various patterns for changing the light path. The light guide plate 31 may be positioned below the liquid crystal panel 2.

The light source unit 32 is positioned beside the light guide plate 31. The light source unit 32 may be disposed on one side of the light guide plate 31. Although not shown, the backlight unit 3 may include a plurality of light source portions 32. In this case, the light source portion 32 is disposed on one side of the light guide plate 31 and on the other side opposite to the one side And may be located on all four sides of the light guide plate 31. [ The light emitted from the light source unit 32 is incident on the light guide plate 31 and is supplied to the liquid crystal panel 2 by the light guide plate 31. The light source unit 32 may include a light source 321 and a substrate 322.

The light source 321 emits light to be supplied to the liquid crystal panel 2. As the light source 321, a light emitting diode (LED) may be used. The plurality of light emitting diodes may be spaced apart from the substrate 322 by a predetermined distance. Although not shown, a cold cathode fluorescent lamp (CCFL) may be used as the light source 321.

The substrate 322 is connected to the light source 321 and the power supply line W so that power can be supplied to the light source 321. The substrate 322 may function to support the light source 321. A printed circuit board (PCB), a flexible printed circuit board (FPCB), or the like may be used as the substrate 312.

The backlight unit 3 may include a reflective member 33. The reflective member 33 may be positioned below the light guide plate 31. The reflective member 33 reflects the light that has been moved to the lower side of the light guide plate 31 toward the light guide plate 31 to thereby prevent the light emitted from the light source unit 31 from being lost to the lower side of the light guide plate 31 have.

The backlight unit 3 may include an optical sheet 34. The optical sheet 34 may be positioned between the liquid crystal panel 2 and the light guide plate 31. The optical sheet 34 allows the light incident from the light guide plate 31 to be uniformly supplied to the liquid crystal panel 2 side. The optical sheet 34 may be a combination of a diffusion sheet and a prism sheet.

Referring to FIGS. 1 to 3, the backlight unit 3 may be housed in the first case 4. The second case 5 may be coupled to the first case 4 and the liquid crystal panel 2 and the backlight unit 5 may be provided in the first case 4 and the second case 5, 3) can be positioned.

The first case 4 may include a storage unit 41 for storing the backlight unit 3. [ The first case 4 may include the receiving part 41 formed in a rectangular shape as a whole, but it is not limited thereto and may include a receiving part 41 formed in a shape corresponding to the liquid crystal panel 2 have. The liquid crystal panel 2 and the backlight unit 3 may be accommodated in the receiving part 41.

The first case 4 may include a through hole 42 through which the light source unit 32 passes. The light source part 32 may be taken out of the storage part 41 through the through hole 42 or removed from the storage part 41 in a state where the second case 5 is coupled to the first case 4, As shown in FIG. Therefore, the liquid crystal display device 1 according to the present invention can achieve the following operational effects.

First, in the liquid crystal display device 1 according to the present invention, when the light source unit 32 is determined to be defective after the assembly, or the light source unit 32 is damaged during assembly or use, The liquid crystal panel 2 and the light guide plate 31 may be separated from the accommodating portion 41 without disassembling the first case 4, the second case 5, the liquid crystal panel 2, Can be taken out. The received light source unit 32 or the new light source unit 32 can be inserted into the receiving unit 41 through the through hole 42 and the first case 4, (5), the liquid crystal panel (2), the light guide plate (31), and the like are not required. Accordingly, the liquid crystal display device 1 according to the present invention can improve the ease and convenience of repairing and replacing the light source unit 32.

Second, the liquid crystal display device 1 according to the present invention includes the first case 4, the second case 5, the liquid crystal panel 2, and the light guide plate (not shown) so as to repair or replace the light source unit 32 31) need not be disassembled or reassembled. Accordingly, the liquid crystal display device 1 according to the present invention can prevent the first case 4, the second case 5, the liquid crystal panel 2, It is possible to eliminate the risk of damaging other components such as the light source unit 31 and thus to prevent the loss of working time and cost due to damage to other components in the process of replacing the light source unit 32. [

The liquid crystal display device 1 according to the present invention is characterized in that the first case 4, the second case 5, the liquid crystal panel 2, the light guide plate 4, The light source unit 32 can be replaced without disassembling or reassembling the light source unit 31 or the like. Therefore, the liquid crystal display device 1 according to the present invention can easily replace the light source unit 32, thereby extending the service period.

Fourth, since the liquid crystal display device 1 according to the present invention does not need to disassemble or reassemble the optical sheet 34 or the like in order to repair or replace the light source portion 32, So that the fixing tape can be continuously used. Accordingly, the liquid crystal display device 1 according to the present invention can prevent the material cost of the fixing tape from being further generated in the process of repairing or replacing the light source as in the conventional liquid crystal display device.

The through hole 42 may be formed on one side 4a of the first case 4. The first case 4 may be formed with one side opened by the receiving part 41 and may include four first side walls formed outside the receiving part 41. The through hole 42 may be formed in any one of the first sidewalls and may be formed at a position corresponding to a position where the light source unit 32 is installed on the first sidewall. 3, the through hole 42 is formed so that the light source unit 32 is moved in the longitudinal direction (direction of arrows C and D) and taken out from the storage unit 41 (shown in FIG. 1) May be formed at a position where it can be inserted into the accommodating portion 41 (shown in Fig. 1). The light source unit 32 can be moved in the direction of the arrow D and can be taken out from the first case 4 through the through hole 42 and moved in the direction of the arrow C to pass through the through hole 42 Can be inserted into the case (4). Although not shown, when the backlight unit 3 includes a plurality of light source portions 32, the first case 4 includes a plurality of through holes 42 formed at positions corresponding to the respective light source portions 32, And the through hole 42 may be formed in at least one first sidewall of the two first sidewalls located on both sides of each of the light source portions 32. [

Referring to FIGS. 1 to 3, the second case 5 may be coupled to the first case 4. The liquid crystal panel 2 and the backlight unit 3 are disposed between the second case 5 and the first case 4 in a state where the second case 5 is coupled to the first case 4, May be located in the inner space. The second case 5 and the first case 4 may be detachably coupled to each other by a fastening member, an interference fit type, a fastening member such as a bolt, or the like.

The second case 5 may include a display hole 51 so that an image displayed on the liquid crystal panel 2 can be viewed. The display hole (51) may be formed through the second case (5). The second case 5 may include the display hole 51 formed in a shape corresponding to the liquid crystal panel 2 and may include the display hole 51 formed in a rectangular shape as a whole.

The second case (5) may include four second side walls corresponding to the first case (4). The second sidewalls may be coupled to the first sidewalls by an engagement, an interference fit, or the like. The second sidewall of the second sidewall corresponding to the through-hole 42 may be formed to have a size that does not cover the through-hole 42. The second case 5 may include three second sidewalls without a second sidewall corresponding to the through-hole 42. The light source part 32 is not interfered with the second case 5 and the light source part 32 is not interfered with the second case 5 through the through hole 42, It can be taken out from the housing part 41 or inserted into the housing part 41. [

And the second sidewall of the second sidewall has a size such that the second sidewall corresponding to the through hole 42 covers the through hole 42, As shown in FIG. The light source part 32 is connected to the receiving part 41 through the through hole 42 and the through hole 52 in a state where the second case 5 is coupled to the first case 4, And can be inserted into the accommodating portion 41. [0054] The through hole (52) may be formed in a size and shape substantially coinciding with the through hole (42). Although not shown, when the backlight unit 3 includes a plurality of light source portions 32, the second case 5 includes a plurality of through holes 52 formed at positions corresponding to the respective light source portions 32, . ≪ / RTI >

1 to 4, the liquid crystal display device 1 according to the present invention may further include a coupling member 6.

The coupling member 6 may be detachably coupled to the first case 4. The coupling member 6 may be inserted into the through hole 42 and coupled to the first case 4. [ The engaging member 6 is inserted into the through hole 42 to prevent foreign substances, liquid, and the like from entering the accommodating portion 41 through the through hole 42.

The engaging member 6 may be formed of an elastic member having a predetermined elastic force. For example, the engaging member 6 may be formed of rubber. The coupling member 6 may be formed to have a larger size than the through hole 42 and may be inserted into the through hole 42 in an interference fit manner and be coupled to the first case 4. When the force is applied to the coupling member 6 in the direction of the arrow C, the coupling member 6 may be inserted into the through hole 42 and coupled to the first case 4. 2, when a force is applied to the engaging member 6 in the direction of the arrow D in a state where the engaging member 6 is engaged with the first case 4, And can be separated from the first case 4.

3 to 5, the engaging member 6 may include an engaging body 61, and the engaging body 61 may include a protruding member 611.

The protruding member 611 may protrude from the coupling body 61. The first case 4 may include a coupling groove 43 (shown in FIG. 3) into which the protruding member 611 is inserted. The coupling groove 43 may be recessed at a predetermined depth from the first sidewall on which the through hole 42 is formed. As the engaging member 6 is inserted into the through hole 42, the protruding member 611 can be inserted into the engaging groove 43. By inserting the protruding member 611 into the engaging groove 43, the engaging member 6 can be engaged with the first case 4 by the engagement. The protruding member 611 may be formed in a shape complementary to the coupling groove 43 and may have a size and shape substantially coinciding with the coupling groove 43. The projection member 611 and the coupling groove 43 allow the coupling member 6 to be firmly coupled to the first case 4 in the liquid crystal display device 1 according to the present invention, So that the coupling member 6 can be coupled to the first case 4 at an accurate position.

The protruding member 611 may protrude from the first surface 61a of the engaging body 61. Referring to FIG. 4, the first surface 61a may be a right surface of the coupling body 61. The engaging member 61 may include a plurality of protruding members 611. In this case, the protruding member 611 may protrude from the first surface 61a and the second surface 61b opposite to the first surface 61a. 4, the first surface 61a may be a right surface of the coupling body 61, and the second surface 61b may be a left surface of the coupling body 61 . The protruding member 611 may protrude from the third surface 61c of the coupling body 61. [ Referring to FIG. 4, the third surface 61c may be an upper surface of the coupling body 61. The protruding member 611 may protrude from the third surface 61c and a fourth surface 61d opposite to the third surface 61c. 4, the third surface 61c may be the upper surface of the coupling body 61, and the fourth surface 61d may be the bottom surface of the coupling body 61 . The protruding member 611 may be formed to protrude from at least one of the first surface 61a, the second surface 61b, the third surface 61c, and the fourth surface 61d . A plurality of protruding members 611 may be formed on the first surface 61a, the second surface 61b, the third surface 61c, and the fourth surface 61d, respectively. The engaging groove 43 may be formed in a number substantially equal to the protruding member 611 and may be formed at a position corresponding to the protruding member 611.

The protruding member 611 may be formed of an elastic member having a predetermined elastic force. For example, the protruding member 611 may be formed of rubber. The protruding member 611 can be elastically compressed by the first case 4 so that the engaging member 6 can be moved in the direction of the arrow C Can be inserted into the hole (42). The protruding member 611 can be resiliently restored when the protruding member 611 is positioned in the engaging groove 43 so that the engaging member 6 is engaged with the first case 4 . Only the protruding member 611 in the engaging member 6 may be formed of an elastic member having a predetermined elastic force and the entire engaging member 6 including the protruding member 611 may be formed of an elastic member having a predetermined elastic force, As shown in FIG.

Referring to FIGS. 4 and 5, the protruding member 611 may include a first inclined surface 611a. The first inclined surface 611a may be formed to be inclined in a direction (arrow D direction) in which the engaging member 6 is separated from the through hole 42 (shown in Fig. 3). The protruding member 611 is formed by the first inclined surface 611a such that the engaging member 6 is reduced in size in the direction in which the engaging member 6 is separated from the through hole 42 . Therefore, the engaging member 6 can be firmly engaged with the first case 4, but can be easily separated from the case 5. [ The first inclined surface 611a may be formed as a curved surface having a predetermined curvature, or may have an inclined surface having a predetermined inclination.

The first case 4 may include a first inclined groove 431 formed to correspond to the first inclined plane 611a when the projecting member 611 includes the first inclined plane 611a . The first inclined groove 431 may be formed in a shape complementary to the first inclined plane 611a and may be formed to have a size and a shape substantially coinciding with the first inclined plane 611a. Therefore, the engaging member 6 can be separated from the first case 4 more easily.

4 and 5, the protruding member 611 may include a second inclined surface 611b. The second inclined surface 611b may be inclined in a direction (arrow C direction) in which the engaging member 6 is inserted into the through hole 42 (shown in Fig. 3). The protruding member 611 is formed by the second inclined surface 611b so that the size of the protruding member 611 is reduced in the direction in which the engaging member 6 is inserted into the through hole 42 . Therefore, the engaging member 6 can be firmly coupled to the first case 4, and can be easily coupled to the first case 4. The second inclined surface 611b may be formed as a curved surface having a predetermined curvature, or may be formed as an inclined surface having a predetermined inclination.

The second inclined surface 611b and the first inclined surface 611a allow the protruding member 611 to have an elliptical cross section as shown in an enlarged sectional view of FIG. 5 is an enlarged cross-sectional view of the section B of the cross section taken along the line A-A in Fig. Although not shown, the protruding member 611 may have a trapezoidal cross-section or a triangular cross-section. The second inclined surface 611b and the first inclined surface 611a may be formed in different shapes. For example, the second inclined surface 611b may be formed as a curved surface having a predetermined curvature, and the first inclined surface 611a may be formed as an inclined surface having a predetermined inclination. The second inclined surface 611b may be formed as an oblique surface having a predetermined inclination, and the first inclined surface 611a may be formed as a curved surface having a predetermined curvature.

The first case 4 may include a second inclined groove 432 formed to correspond to the second inclined surface 611b. The second inclined groove 432 may be formed in a shape complementary to the second inclined surface 611b and may be formed to have a size and a shape substantially coinciding with the second inclined surface 611b.

6, the engaging member 6 according to the modified embodiment of the present invention is characterized in that the protruding member 611 is formed in the first case 4 and the engaging groove 43 is formed in the engaging member 6). The protrusion member 611 may protrude from a first side wall formed with the through hole 42 (shown in FIG. 3), and the engaging groove 43 may be formed in a shape corresponding to the protrusion member 611 Can be formed by being recessed at a predetermined depth in the member (6). In this case, the protruding member 611 may include a first inclined surface 611a and a second inclined surface 611b, and the engaging groove 43 may include the first inclined groove 431 and the second inclined groove 611b, Lt; RTI ID = 0.0 > 432 < / RTI >

3 to 5, the coupling body 61 may be inserted into the through hole 42 to seal the first case 4. Accordingly, the coupling body 61 can block foreign substances, liquids, and the like from entering the accommodating portion 41 through the through hole 42. [ The coupling body 61 may be formed in a shape complementary to the through-hole 42, and may be formed in a size and shape substantially coinciding with the through-hole 42. The coupling body 61 may be formed in a rectangular parallelepiped shape, but is not limited thereto. The coupling body 61 may be formed in a different shape as long as it is inserted into the through hole 42 to seal the first case 4 . The coupling body 61 may be formed of an elastic member having a predetermined elastic force. In this case, the engaging body 61 may be formed to have a larger size than the through hole 42, and may be inserted into the through hole 42 in an interference fit manner to be coupled to the first case 4 . The protruding member 611 or the coupling groove 43 may be formed in the coupling body 61.

The coupling body 61 may include a through hole 612 through which the power supply line W is inserted. The through hole 612 may be formed through the coupling body 61. The power supply line W may be connected to the light source unit 32 through the coupling body 61 through the through hole 612. The power supply line W may be connected to the substrate 322 and power may be supplied to the light source 321 through the substrate 322.

4 and 5, the coupling member 6 may include a contact body 62 for contacting one side of the light source unit 32. [ 5, the light source unit 32 may contact one side of the contact body 62 and the other side of the light source unit 32 may contact the other side of the first case 4. Therefore, even if an impact or the like is exerted from the outside in the course of use or transportation, the light source part 32 is supported by the contact body 62 on one side and is arbitrarily moved by being supported on the first case 4 Can be prevented. Accordingly, the liquid crystal display device 1 according to the present invention can prevent the light source unit 32 or other adjacent components from being damaged as the light source unit 32 is moved arbitrarily.

The contact body 62 may protrude from the coupling body 61. The contact body 62 may be formed to protrude in a direction (arrow C direction) in which the engaging member 6 is inserted into the through hole 42. The contact body 62 may be formed to protrude so as to be in contact with one side of the light source part 62 when the coupling body 61 is inserted into the through hole 42. In this case, the contact body 62 may be positioned in the receiving part 41 through the through hole 42. The contact body 62 may be formed in a rectangular plate shape extending in a direction (arrow C direction) in which the engaging member 6 is inserted into the through hole 42.

Referring to FIGS. 1 and 7, the backlight unit 3 may include a housing 35. Fig. 7 is a partial side view of the liquid crystal display device 1 according to the present invention viewed in the arrow E direction in Fig.

The housing 35 may be positioned beside the light guide plate 31. The housing 35 may be installed in the receiving part 41 at a side of the light guide plate 31. The housing 35 may include a receiving groove 351 through which the light source unit 32 is inserted. The housing 35 may be formed as a whole by the receiving groove 351 and the light source unit 32 may be inserted into the receiving groove 351. 7, the receiving groove 351 may be formed to have a length substantially equal to the short side length L of the substrate 322. The substrate 322 may be coupled to the housing 35 in an interference fit manner. Although not shown, the housing 35 may include guide grooves for guiding the light source part 32 to be inserted into the receiving groove 351. Both sides of the substrate 322 can be inserted into the guide grooves. As shown in FIG. 5, one side of the substrate 322 is in contact with the contact body 62, and the other side of the substrate 322 is in contact with the first case 4 And can be fixed by being brought into contact with the other side.

Referring to FIGS. 1 and 8, in the liquid crystal display device 1 according to the modified embodiment of the present invention, the reflection member 33 may further include an installation member 331. FIG. 8 is a partial side view of the liquid crystal display 1 according to a modified embodiment of the present invention, as viewed in the arrow E direction in FIG.

The mounting member 331 may be positioned adjacent to the light guide plate 31 and may include an installation groove 331a through which the light source unit 32 is inserted. The reflective member 33 may be formed in a 'C' shape on one side where the light source unit 32 is located. The light source part 32 may be inserted into the installation groove 331a. That is, in the liquid crystal display device 1 according to the modified embodiment of the present invention, the reflective member 33 can function as the housing 35 described above. 8, the mounting groove 331a may be formed to have a length substantially equal to the short side length L of the substrate 322. As shown in FIG. The substrate 322 may be coupled to the mounting member 331 in an interference fit manner. Although not shown, the mounting member 331 may include guide grooves for guiding the light source unit 32 to be inserted into the installation groove 331a. Both sides of the substrate 322 may be inserted into the guide grooves. As shown in FIG. 5, one side of the substrate 322 is in contact with the contact body 62, and the other side of the substrate 322 is in contact with the first case 4 And can be fixed by being brought into contact with the other side.

The liquid crystal display device 1 according to the modified embodiment of the present invention can prevent the reflection member 33 from covering the light source unit 32. Therefore, It is possible to reduce the amount of light that is lost in the process of emitting the emitted light to the light guide plate 31. In addition, the liquid crystal display device 1 according to the modified embodiment of the present invention can reduce the number of components by omitting the housing 35, thereby simplifying the assembling process.

Referring to FIGS. 1 and 9, the liquid crystal display device 1 according to the present invention may further include an auxiliary case 7.

The auxiliary case 7 may be coupled to the first case 4 and may include an auxiliary groove 71 formed at a position corresponding to the through hole 42. The light source unit 32 is connected to the first case 4 through the auxiliary groove 71 and the through hole 42. The auxiliary case 7 is coupled to the first case 4, It can be taken out or inserted into the accommodating portion 41. [ The auxiliary groove 71 may be formed in a size and shape substantially coinciding with the through hole 42. The auxiliary case 7 is coupled to the first case 4 to reinforce the strength of the first case 4. The auxiliary case 7 may be formed of aluminum (Al) having a good thermal conductivity, and thus may function to dissipate heat generated from the light source unit 32.

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. It will be clear to those who have knowledge.

1: liquid crystal display device 2: liquid crystal panel 3: backlight unit 4: first case
5: second case 6: coupling member 7: auxiliary case 21: first substrate
22: second substrate 23: liquid crystal layer 31: light guide plate 32: light source part 33: reflective member
34: optical sheet 35: housing 41: storage portion 42: through hole 43:
51: display hole 52: passing groove 61: engaging body 62: contact body

Claims (10)

A liquid crystal panel in which a liquid crystal layer is formed between a first substrate and a second substrate;
A backlight unit including a light guide plate positioned below the liquid crystal panel and a light source positioned next to the light guide plate;
A first case including a receiving portion for receiving the backlight unit; And
And a second case coupled to the first case,
Wherein the first case is provided with a through hole through which the light source unit is passed so that the light source unit can be taken out of the receiving unit or inserted into the receiving unit in a state where the second case is engaged,
A coupling member inserted into the through hole and detachably coupled to the first case;
And a projecting member disposed on the engaging member,
Wherein the protruding member includes a first inclined surface inclined in a direction in which the engaging member is separated from the through hole and a second inclined surface inclined in a direction in which the engaging member is inserted into the through hole,
Wherein the first case includes a first inclined groove formed corresponding to the first inclined surface. delete delete delete The method according to claim 1,
Wherein the coupling member includes a coupling body inserted into the passage hole to seal the first case,
Wherein the coupling body includes a through hole through which the power supply line passes,
And a power supply line passing through the coupling body is connected to the light source through the through hole. The method according to claim 1,
The through hole is formed on one side of the first case;
The coupling member includes a contact body for contacting one side of the light source unit;
Wherein the light source part is in contact with the contact body at one side and the other side is in contact with the other side of the first case. The method according to claim 1,
Wherein the backlight unit includes a reflective member positioned below the light guide plate,
Wherein the reflection member includes a mounting member on which the light source unit is installed, wherein the mounting member has an installation groove for inserting the light source unit. The method according to claim 1,
Wherein the backlight unit includes a housing positioned next to the light guide plate,
Wherein the housing has a receiving groove for receiving the light source portion. The method according to claim 1,
And the second case includes a through-hole formed at a position corresponding to the through-hole so that the light source part can be taken out of the receiving part or inserted into the receiving part in a state of being coupled to the first case. The method according to claim 1,
Further comprising a secondary case coupled to the first case,
And the auxiliary case includes an auxiliary groove formed at a position corresponding to the through hole so that the light source part can be taken out of the receiving part or inserted into the receiving part in a state of being coupled to the first case.

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