KR20140039752A

KR20140039752A - Light unit and illumination system using the same

Info

Publication number: KR20140039752A
Application number: KR1020120106379A
Authority: KR
Inventors: 김등관
Original assignee: 엘지이노텍 주식회사
Priority date: 2012-09-25
Filing date: 2012-09-25
Publication date: 2014-04-02

Abstract

The present invention relates to a light unit and a lighting system using the same which comprises: a bottom cover; a light guide plate disposed on the upper part of the bottom cover; and a power source module disposed on one side of the light guide plate. The light source module comprises: a first substrate disposed on a first direction to face a side of the light guide plate; a second substrate which is extended from the first substrate and disposed in a second direction to face a part of the lower surface of the light guide plate; and a power source disposed on the first substrate, wherein an angle between the first substrate and the second substrate can be an acute angle. Here, the first substrate is inclined against the side of the light guide plate, and the second substrate can be inclined against the lower surface of the light guide plate. [Reference numerals] (AA, BB) Bezel area

Description

[0001] The present invention relates to a light unit and an illumination system using the light unit,

The embodiment relates to a light unit and an illumination system using the light unit.

Typically, typical large-sized display devices include a liquid crystal display (LCD), a plasma display panel (PDP), and the like.

Unlike a self-luminous PDP, a separate light unit is indispensable because of the absence of its own light emitting device.

The light unit used for the LCD is divided into an edge type light unit and a direct light type light unit according to the position of the light source. In the edge type, a light source is disposed on the right and left sides or upper and lower sides of the LCD panel, Since the light is uniformly distributed over the surface, uniformity of light is good and the thickness of the panel can be made very thin.

The direct-type method is generally used for a display of 20 inches or more, and since the light source is arranged at a lower portion of the panel, the light efficiency is higher than that of the edge method. Thus, it is mainly used for a large display requiring high brightness.

CCFL (Cold Cathode Fluorescent Lamp) was used as the light source of the conventional edge method or direct light type light unit.

However, a light unit using CCFL always consumes a considerable amount of power because power is supplied to the CCFL, and a color reproduction ratio of about 70% as compared with a CRT and environmental pollution problems caused by the addition of mercury are pointed out as disadvantages.

As a substitute product for solving the above problem, studies on a light unit using an LED (Light Emitting Diode) have been actively conducted.

When the LED is used as a light unit, it is possible to partially turn on / off the LED array, which can drastically reduce power consumption. In the case of RGB LEDs, it exceeds 100% of the National Television System Committee (NTSC) So that a more vivid image quality can be provided to the consumer.

1 is a sectional view showing a general light unit.

1, the light unit includes a light guide plate 2, a reflector 3, an optical member 4, a light source module 5, .

The light unit may further include a top cover 6, a bottom cover 7, and a panel guide 8.

Here, the panel guide 8 can support the display panel 9, and the top cover 6 can be connected to the bottom cover 7.

Subsequently, the light guide plate 2 may have a reflector 3 disposed on a lower surface thereof, and an optical member 4 disposed on an upper surface thereof.

Next, the light source module 5 includes a substrate 5b and a light source 5a arranged on the substrate 5b, which may be disposed on both sides of the light guide plate 2.

The light unit having such a structure may be difficult to release heat generated from the light source 5a of the light source module 5.

Moreover, since the panel guide 8 is arrange | positioned outside the board | substrate 5b of the light source module 5, it becomes the cause which the bezel area of the lighting apparatus or display apparatus to which a light unit is applied increases.

Therefore, in the future, it is necessary to minimize the bezel area of the lighting device or the display device to which the light unit is applied, and to develop a light unit having excellent heat dissipation efficiency.

The embodiment is intended to provide a light unit having excellent heat dissipation efficiency and a lighting system using the same by changing the substrate structure of the light source module.

In addition, the embodiment is to provide a light unit and a lighting system using the same by changing the substrate structure of the light source module, thereby minimizing the size of the bezel.

In addition, the embodiment is to provide a light unit and a lighting system using the same by changing the substrate structure of the light source module, to prevent damage to the light source module by the expansion of the light guide plate.

An embodiment includes a bottom cover, a light guide plate disposed on the bottom cover, and a light source module disposed on one side of the light guide plate, wherein the light source module is disposed in a first direction so as to face a side surface of the light guide plate. A substrate, a second substrate extending from the first substrate and disposed in a second direction to face a portion of the lower surface of the light guide plate, and a light source disposed on the first substrate, wherein an angle between the first substrate and the second substrate is It may be acute.

Here, the first substrate may be inclined with respect to the side surface of the light guide plate, and the second substrate may be inclined with respect to the lower surface of the light guide plate.

In some cases, the first substrate may be inclined with respect to the side of the light guide plate, and the second substrate may be parallel to the bottom surface of the light guide plate.

As another case, the first substrate may be parallel to the side of the light guide plate, and the second substrate may be inclined with respect to the bottom surface of the light guide plate.

The first substrate may include an upper surface on which the light source is disposed, and as the upper surface of the first substrate moves away from the second substrate, the distance between the upper surface of the first substrate and the side surface of the light guide plate may gradually decrease. .

Next, a 1st board | substrate contains the 1st board | substrate which adjoins a 2nd board | substrate, the 2nd area | region which is adjacent to a 1st area | region, and the light source is arrange | positioned, and the 3rd area | region which adjoins a 2nd board | substrate, The first region and the third region may be inclined with respect to the side surface of the light guide plate, and the second region of the first substrate may be parallel to the side surface of the light guide plate.

Here, the distance between the first region of the first substrate and the side surface of the light guide plate may be longer than the distance between the third region of the first substrate and the side surface of the light guide plate.

The second region of the first substrate may have a thickness different from that of the first region and the third region of the first substrate.

Subsequently, the first region of the first substrate may have a thickness thinner than the third region of the first substrate.

Also, the second substrate includes an upper surface facing the lower surface of the light guide plate, and as the upper surface of the second substrate moves away from the first substrate, the distance between the upper surface of the second substrate and the lower surface of the light guide plate is Can decrease gradually.

Next, the second substrate includes a fourth region adjacent to the first substrate and facing the light source, and a fifth region adjacent to the fourth region and facing the lower surface of the light guide plate, and the fourth substrate of the second substrate. The region may be inclined with respect to the lower surface of the light guide plate, and the fifth region of the second substrate may be parallel to the lower surface of the light guide plate.

Here, the fourth region of the second substrate may be inclined to approach an extension line extending along the lower surface of the light guide plate as the fourth region of the second substrate moves away from the first substrate.

The fourth region of the second substrate may have a thickness thinner than the five regions of the second substrate.

Subsequently, the first substrate includes an upper surface facing the light source and a lower surface facing the bottom cover, and as the lower surface of the first substrate moves away from the second substrate, the lower surface and the bottom cover of the first substrate The distance between them can gradually increase.

Next, a panel guide may be disposed between the bottom surface of the first substrate and the bottom cover.

In addition, the second substrate includes an upper surface facing the light guide plate and a lower surface facing the bottom cover, and as the lower surface of the second substrate moves away from the first substrate, the lower surface and the bottom cover of the second substrate The distance between them can gradually increase.

In addition, a reflector may be disposed between the upper surface of the second substrate and the lower surface of the light guide plate.

Subsequently, the second substrate may include a dummy area facing the light guide plate and a circuit area not facing the light guide plate, and the circuit area may include an electrode pattern for driving a light source.

Next, the first substrate and the second substrate may be made of different materials.

In some cases, the first substrate and the second substrate may be formed to have different thicknesses.

As another case, the surface of the first substrate may be flat, and the surface of the second substrate may have an uneven pattern.

In addition, a recess may be disposed in an edge region of the bottom cover, and a second substrate may be disposed in the groove of the bottom cover.

Here, the bottom surface of the groove of the bottom cover is in contact with the second substrate and may be inclined with respect to the surface of the bottom cover.

Subsequently, the side surface of the light guide plate may be an inclined surface, and an angle between the side surface of the light guide plate and the upper surface of the light guide plate may be an obtuse angle, and the angle between the side surface of the light guide plate and the bottom surface of the light guide plate may be an acute angle.

Next, a groove may be disposed on the side surface of the light guide plate, and a light source may be disposed in the groove of the light guide plate.

In addition, a plurality of light sources are disposed on the first substrate, a stopper is disposed between the light sources, and a distance between the stopper and the side of the light guide plate may be closer than the distance between the light source and the side of the light guide plate.

Here, the buffer member may be disposed on the surface of the stopper.

The embodiment further includes an optical member disposed above the light guide plate, a reflector disposed below the light guide plate, and a panel guide disposed at one side of the light guide plate, wherein the panel guide is bottomed with the first substrate of the light source module. It may include a first segment disposed between the cover and a second segment bent in the light guide plate direction from the end of the first segment.

Here, the optical member may contact the second segment of the panel guide and be spaced apart from the light guide plate.

Another embodiment includes a bottom cover, a light guide plate disposed on the bottom cover, and a light source module disposed on one side of the light guide plate, wherein the light source module is disposed in a first direction so as to face a side surface of the light guide plate. A first substrate, a second substrate extending from one side of the first substrate and disposed in a second direction to face a portion of the lower surface of the light guide plate, and extending from the other side of the first substrate, and facing a portion of the upper surface of the light guide plate; A third substrate disposed in two directions and a light source disposed on the first substrate, wherein an angle between the first substrate and the second substrate is an acute angle, and an angle between the first substrate and the third substrate is an obtuse angle or a right angle Can be.

Here, the light source may be disposed between the second substrate and the third substrate, the light source may have a first distance from the second substrate, a second distance from the third substrate, and the first and second intervals may be different from each other. .

In addition, the first substrate and the second substrate of the light source module may contact the bottom cover.

Subsequently, the second substrate may be inclined with respect to the lower surface of the light guide plate, and the third substrate may be parallel to the upper surface of the light guide plate.

Another embodiment includes a bottom cover, a light guide plate disposed on the bottom cover, a light source module disposed on one side of the light guide plate, and a heat dissipation member disposed between the bottom cover and the light source module. The first substrate disposed in the first direction to face the side of the light guide plate, the second substrate extending from the first substrate and disposed in the second direction to face a portion of the lower surface of the light guide plate, and disposed on the first substrate A light source, wherein the angle between the first substrate and the second substrate is an acute angle, and the heat dissipation member includes a first heat sink that is in contact with the first substrate, and a second heat sink that is extended from the first heat sink and is in contact with the second substrate. Includes, the angle between the first heat sink and the second heat sink may be an acute angle.

Another embodiment includes a bottom cover, a light guide plate disposed on the bottom cover, and a light source module disposed on one side of the light guide plate, wherein a side of the light guide plate is an inclined surface, and a side surface of the light guide plate and an upper surface of the light guide plate. The angle between is an obtuse angle, the angle between the side of the light guide plate and the lower surface of the light guide plate is an acute angle, the light source module extends from the first substrate and the first substrate disposed in the first direction to face the side of the light guide plate, And a second substrate disposed in a second direction to face a portion of the lower surface of the light guide plate, and a light source disposed on the first substrate, wherein the angle between the first substrate and the second substrate is an acute angle, and the first substrate is formed of the light guide plate. Parallel to the sides, the second substrate may be inclined with respect to the bottom surface of the light guide plate.

According to the embodiment, the heat dissipation efficiency of the light source module can be improved by changing the substrate structure of the light source module such that the substrate and the bottom cover are in contact with each other.

In addition, the embodiment may minimize the size of the bezel by changing the substrate structure of the light source module, and may prevent light loss.

In addition, the embodiment may prevent damage to the light source module due to expansion of the light guide plate by changing the substrate structure of the light source module.

1 is a sectional view showing a general light unit
2 is a cross-sectional view for describing a light unit according to a first embodiment.
3A to 3C are cross-sectional views showing a substrate of the light source module.
4 is a cross-sectional view showing a distance between a first substrate and a light guide plate according to the first embodiment;
5A and 5B are sectional views showing the thickness of the first substrate according to the first embodiment.
6 is a cross-sectional view showing a distance between a first substrate and a light guide plate according to the second embodiment;
7A and 7B are cross-sectional views showing thicknesses of the first substrate according to the second embodiment.
8 is a cross-sectional view showing a distance between a second substrate and a light guide plate according to the first embodiment;
9A and 9B are sectional views showing the thickness of the second substrate according to the first embodiment.
10 is a cross-sectional view showing a distance between a second substrate and a light guide plate according to the second embodiment;
11A and 11B are sectional views showing the thickness of the second substrate according to the second embodiment.
12A to 12C are cross-sectional views showing a distance between the first substrate and the bottom cover
13A-13C are cross-sectional views showing the distance between the first substrate and the panel guide
14A to 14C are cross-sectional views showing a distance between the second substrate and the bottom cover
15 is a cross-sectional view showing a supporter between the second substrate and the bottom cover;
16 is a cross-sectional view showing a reflector between the second substrate and the light guide plate;
17 is a cross-sectional view showing a circuit region of a second substrate.
18A and 18B are cross-sectional views showing a first substrate and a second substrate
19A through 19C are cross-sectional views illustrating thicknesses of a first substrate and a second substrate.
20A to 20D are cross-sectional views showing uneven patterns of a substrate.
21A to 21D are cross-sectional views illustrating a groove of the bottom cover according to the first embodiment.
22 is a cross-sectional view illustrating a groove of a bottom cover according to the second embodiment.
23 is a sectional view showing a side of a light guide plate according to the first embodiment;
24 is a cross-sectional view showing a side of a light guide plate according to a second embodiment;
25A to 25C are views illustrating a stopper of the light source module, and FIG. 25A is a perspective view
26A and 26B are plan views showing the arrangement of stoppers of the light source module.
27A-27C are cross-sectional views showing the arrangement of the top and bottom surfaces of the stopper;
Fig. 28 is a sectional view showing the buffer member of the stopper;
29A-29C are cross-sectional views showing the layout of the panel guides.
30 is a cross-sectional view for describing a light unit according to a second embodiment.
31A-31C are cross-sectional views showing the substrate of FIG. 30.
32A through 32C are cross-sectional views illustrating a distance between the substrate and the light source of FIG. 30.
33A-33C are cross-sectional views showing the length of the substrate of FIG.
34 is a cross-sectional view for describing a light unit according to a third embodiment.
35 is a cross-sectional view for describing a light unit according to a fourth embodiment.
36 is a view showing a display module having a light unit according to an embodiment
37 and 38 illustrate a display apparatus according to an embodiment.

Hereinafter, embodiments will be described with reference to the accompanying drawings.

In the description of the embodiments, it is to be understood that each layer (film), region, pattern or structure is formed "on" or "under" a substrate, each layer The terms " on "and " under " encompass both being formed" directly "or" indirectly " In addition, the criteria for above or below each layer will be described with reference to the drawings.

The thickness and size of each layer in the drawings are exaggerated, omitted, or schematically shown for convenience and clarity of explanation. Also, the size of each component does not entirely reflect the actual size.

2 is a cross-sectional view for describing the light unit according to the first embodiment.

As shown in FIG. 2, the light unit includes a light source module 100, a light guide plate 200, a reflector 300, a bottom cover 400, It may include a top cover 450, a panel guide 500, and an optical member 600.

Here, the light source module 100 may be disposed on the side portion of the light guide plate 200, but may be disposed at a predetermined interval apart.

The light source module 100 may include a substrate 100b having an electrode pattern and at least one light source 100a disposed on the substrate 100b.

Here, the substrate 100b may include a first substrate 100b1 and a second substrate 100b2.

In this case, the first substrate 100b1 is disposed in the first direction so as to face the side surface of the light guide plate 200, and the second substrate 100b2 extends from the first substrate 100b1, so that a part of the lower surface of the light guide plate 200 is disposed. It may be arranged in the second direction to face the.

The angle θ between the first substrate 100b1 and the second substrate 100b2 may be an acute angle.

For example, the first substrate 100b1 may be inclined with respect to the side surface of the light guide plate 200, and the second substrate 100b2 may be inclined with respect to the lower surface of the light guide plate 200.

In some cases, the first substrate 100b1 may be inclined with respect to the side surface of the light guide plate 200, and the second substrate 100b2 may be parallel to the lower surface of the light guide plate 200.

As another example, the first substrate 100b1 may be parallel to the side surface of the light guide plate 200, and the second substrate 100b2 may be inclined with respect to the lower surface of the light guide plate 200.

As such, the reason why the angle θ between the first substrate 100b1 and the second substrate 100b2 is arranged to be an acute angle is that damage to the light source module 100 due to expansion of the light guide plate 200 can be prevented. to be.

For example, when the first substrate 100b1 is disposed to be inclined with respect to the side surface of the light guide plate 200 or when the second substrate 100b2 is disposed to be inclined with respect to the lower surface of the light guide plate 200, the light guide plate 200 may be formed. Even when expanded in the direction of the first substrate 100b1, the first substrate 100b1 may maintain a stable structure without being pushed by the light guide plate 200.

Here, the light source 100a may be prevented from being damaged from expansion of the light guide plate 200 by a stopper (not shown) disposed on the first substrate 100b1.

In addition, since the light output direction of the light source 100a disposed on the first substrate 100b1 is directed toward the reflector 300, the light may be transmitted to the light guide plate 200 with little loss.

In addition, when the light unit according to the embodiment is applied to the display device or the lighting system, the size of the bezel area may be minimized.

Subsequently, at least one of the first substrate 100b1 and the second substrate 100b2 may contact the bottom cover 400.

The first substrate 100b1 may be in contact with the light source 100a.

As described above, the reason why at least one of the first substrate 100b1 and the second substrate 100b2 contacts the bottom cover 400 is that the heat dissipation efficiency of the light source module 100 can be increased.

For example, if the second substrate 100b2 of the light source module 100 is in contact with the bottom cover 400, heat generated from the light source 100a may cause the first substrate 100b1 and the second substrate 100b1 to pass through. In addition to being discharged through, it may be discharged to the outside through the bottom cover 400 in contact with the second substrate 100b2.

Here, at least one of the first substrate 100b1 and the second substrate 100b2 may be a printed circuit board (PCB) substrate made of a metal material.

In addition, although the first substrate 100b1 and the second substrate 100b2 may be the same material, in some cases, they may be different materials.

For example, when the first substrate 100b1 is in contact with the light source 100a and the second substrate 100b2 is in contact with the bottom cover 400, the second substrate 100b2 is less than the first substrate 100b1. It may be made of a metallic material of a material having a higher thermal conductivity.

The reason is that when the thermal conductivity of the second substrate (100b2) is higher than the thermal conductivity of the first substrate (100b1), the heat resistance is low and heat transfer from the first substrate (100b1) to the second substrate (100b2) is fast, This is because the heat of the light source 100a can be quickly released to the bottom cover 400.

In some cases, at least one of the first substrate 100b1 and the second substrate 100b2 may be formed of any one material selected from polyethylene terephthalate (PET), glass, polycarbonate (PC), and silicon (Si). (Printed Circuit Board) It may be a substrate or may be formed in a film form.

In addition, at least one of the first substrate 100b1 and the second substrate 100b2 may include a single-layer PCB, a multilayer PCB, a metal printed circuit board (MPCB), a metal core printed circuit board (MCPCB). The flexible printed circuit board may be any one of a flexible printed circuit board (FPCB) and a ceramic substrate.

Here, at least one of the first substrate 100b1 and the second substrate 100b2 may be formed of a material that reflects light efficiently, or a surface may be formed of a color that reflects light efficiently, for example, white, silver, or the like. Or coated.

In addition, at least one of the first substrate 100b1 and the second substrate 100b2 may be formed of any one of a reflective coating film and a reflective coating material layer, and the light guide plate 200 may emit light generated from the light source 100a. Can be reflected in the direction of.

Subsequently, the light source 100a of the light source module 100 may be disposed on the first substrate 100b1.

The light source 100a may be a top view type light emitting diode.

In some cases, the light source 100a may be a side view type light emitting diode.

The light source 100a may be a light emitting diode (LED) chip. The light emitting diode chip may be a blue LED chip or an ultraviolet LED chip, or may be a red LED chip, a green LED chip, a blue LED chip, ) LED chip, or a white LED chip.

Further, the light emitting diode chip may have a phosphor.

Here, the phosphor may be at least one of a garnet (YAG, TAG), a silicate, a nitride, and an oxynitride.

The phosphor may be any one or more of a yellow phosphor, a green phosphor, and a red phosphor.

The white LED may be realized by combining a yellow phosphor on a blue LED or by simultaneously using a red phosphor and a green phosphor on a blue LED, (Yellow phosphor), Red phosphor (Phosphor) and Green phosphor (Phosphor).

Next, the light guide plate 200 may be disposed on the bottom cover 400, the optical member 600 may be disposed on the light guide plate 200, and the reflector 300 may be disposed below the light guide plate 200. have.

Here, the light guide plate 200 may be formed of a material such as acrylic resin such as PMMA (Polymethylmethacrylate), polyethylene terephthalate (PET), cyclic olefin copolymers (COC), polyethylene naphthalate (PEN), polycarbonate, polystyrene, styrene) resin.

The refractive index of the light guide plate 200 may be about 1.3 - 1.55, and the transmittance of the light guide plate 200 may be about 80 - 99%.

The reflector 300 may be disposed between the light guide plate 200 and the bottom cover 400. The reflector 300 may be one of a reflective coating film and a reflective coating material layer.

In some cases, the reflector 300 may be formed with a plurality of reflection patterns on the surface facing the light guide plate 200, the surface of the reflection pattern being flat or curved.

Here, the reflector 300 may include a metal or metal oxide having a high reflectance such as aluminum (Al), silver (Ag), gold (Au), titanium dioxide (TiO ₂ )

In addition, the optical member 600 may be disposed on the light guide plate 200, and the optical member 600 may have a concave-convex pattern on the upper surface.

That is, the optical member 600 diffuses the light emitted from the light source module 100 and may form a concave-convex pattern on the upper surface to increase the diffusion effect.

That is, the optical member 600 may be formed in several layers, and the concavo-convex pattern may be on the surface of the uppermost layer or any one layer.

The concavo-convex pattern may have a strip shape arranged along the light source module 100.

At this time, the concavo-convex pattern has protrusions on the surface of the optical member 600, and the protrusions are composed of a first surface and a second surface facing each other, and an angle between the first surface and the second surface may be an obtuse angle or an acute angle.

Optionally, the optical member 600 is made of at least one sheet, and may optionally include a diffusion sheet, a prism sheet, a brightness enhancement sheet, and the like.

Here, the diffusion sheet diffuses the light emitted from the light source, and the prism sheet guides the diffused light to the light emitting area, and the brightness diffusion sheet strengthens the brightness.

Next, the bottom cover 400 may include a bottom plate and a lateral plate disposed around the bottom plate.

Here, the reflector 300 or the light guide plate 200 may be disposed on the bottom plate of the bottom cover 400, and the panel guide 500 or the light source module 100 may be disposed on the side plate of the bottom cover 400. .

The panel guide 500 may support a flat panel 800 such as a display panel, and may be disposed to cover the light source module 100.

Here, the panel guide 500 may be omitted in some cases.

Next, the top cover 450 may be disposed to be fastened outside the bottom cover 400 to cover the panel guide 500.

As described above, the embodiment is configured to change the structure of the substrate 100b of the light source module 100 so that the substrate 100b of the light source module 100 and the bottom cover 400 come into contact with each other, thereby dissipating heat of the light source module 100. The efficiency can be improved.

In addition, by changing the structure of the substrate 100b of the light source module 100, the embodiment may not only minimize the size of the bezel, but also minimize the loss of light.

In addition, in the exemplary embodiment, damage to the light source module 100 due to expansion of the light guide plate 200 may be prevented by changing the structure of the substrate 100b of the light source module 100.

3A to 3C are cross-sectional views illustrating a substrate of a light source module.

As shown in FIGS. 3A to 3C, the light source module 100 may be disposed on the side surface 202 of the light guide plate 200, but may be disposed at a predetermined interval apart.

Here, the light source module 100 may include a substrate 100b having an electrode pattern and at least one light source 100a disposed on the substrate 100b.

The substrate 100b may include a first substrate 100b1 and a second substrate 100b2.

In this case, the first substrate 100b1 is disposed in the first direction to face the side surface 202 of the light guide plate 200, and the second substrate 100b2 extends from the first substrate 100b1 to lower the light guide plate 200. It may be arranged in a second direction to face a portion of the surface 204.

Here, the angle θ between the upper surface 100b1-1 of the first substrate 100b1 and the upper surface 100b2-1 of the second substrate 100b2 may be an acute angle.

As shown in FIG. 3A, the upper surface 100b1-1 of the first substrate 100b1 may be disposed to be inclined with respect to the side surface 202 of the light guide plate 200, and the upper surface 100b2- of the second substrate 100b2. 1) may be disposed to be inclined with respect to the lower surface 204 of the light guide plate 200.

Here, the light source 100a is disposed on the upper surface 100b1-1 of the first substrate 100b1, and the light output direction of the light source 100a faces a reflector (not shown) disposed under the light guide plate 200. Can be.

Therefore, the light emitted from the light source 100a may be transmitted to the light guide plate 200 with almost no loss, and the size of the bezel may be minimized.

In addition, the first substrate 100b1 is disposed to be inclined with respect to the side surface 202 of the light guide plate 200, and the second substrate 100b2 is disposed to be inclined with respect to the lower surface 204 of the light guide plate 200. Even if the 200 is expanded in the direction of the first substrate 100b1, the first substrate 100b1 may maintain a stable structure without being pushed by the light guide plate 200.

In some cases, as shown in FIG. 3B, the upper surface 100b1-1 of the first substrate 100b1 is inclined with respect to the side surface 202 of the light guide plate 200, and the upper surface 100b2- of the second substrate 100b2. 1) may be parallel to the bottom surface 204 of the light guide plate 200.

As another example, as shown in FIG. 3C, the upper surface 100b1-1 of the first substrate 100b1 is parallel to the side surface 202 of the light guide plate 200, and the upper surface 100b2 of the second substrate 100b2. −1 may be inclined with respect to the bottom surface 204 of the light guide plate 200.

As such, the angle θ between the first substrate 100b1 and the second substrate 100b2 is disposed to be an acute angle, thereby preventing damage to the light source module 100 due to expansion of the light guide plate 200. Light loss and bezel size can be minimized.

4 is a cross-sectional view illustrating a distance between a first substrate and a light guide plate according to the first embodiment.

As shown in FIG. 4, the light source module 100 may be disposed on the side surface 202 of the light guide plate 200, but may be disposed at a predetermined interval apart.

In this case, the first substrate 100b1 is disposed in the first direction to face the side surface 202 of the light guide plate 200, and the second substrate 100b2 extends from the first substrate 100b1 to lower the light guide plate 200. It may be arranged in a second direction to face a portion of the face.

Here, the angle between the first substrate 100b1 and the second substrate 100b2 may be an acute angle.

Meanwhile, the first substrate 100b1 includes an upper surface 100b1-1 on which the light source 100a is disposed, and the upper surface 100b1-1 of the first substrate 100b1 is far from the second substrate 100b2. As the quality increases, the distance between the upper surface 100b1-1 of the first substrate 100b1 and the side surface 202 of the light guide plate 200 may gradually decrease.

For example, a vertical line passing through a point P1 located in a region far from the second substrate 100b2 among the side surfaces 202 of the light guide plate 200 is formed on the upper surface 100b1-1 of the first substrate 100b1. When passing one point P11, point P1 and point P11 are separated by a distance d1.

The vertical line passing through any point P2 located in the region adjacent to the second substrate 100b2 is one of the upper surfaces 100b1-1 of the first substrate 100b1 among the side surfaces 202 of the light guide plate 200. When passing point P12, point P2 and point P12 are separated by a distance d2.

Here, the distance d1 between the point P1 and the point P11 may be closer than the distance d2 between the point P2 and the point P12.

In some cases, although not shown, the distance d1 between the point P1 and the point P11 and the distance d2 between the point P2 and the point P12 may be equal to each other.

Here, if the distance d1 between the point P1 and the point P11 and the distance d2 between the point P2 and the point P12 are equal to each other, the upper surface 100b1-1 of the first substrate 100b1 may be formed on the side surface of the light guide plate 200. Parallel to 202, the top surface of the second substrate 100b2 may be inclined with respect to the bottom surface of the light guide plate 200.

5A and 5B are sectional views showing the thickness of the first substrate according to the first embodiment.

As shown in FIGS. 5A and 5B, the light source module may be disposed at the side portion of the light guide plate 200, but may be disposed at a predetermined interval apart.

Here, the light source module may include a first substrate 100b1 and a second substrate 100b2, and may include at least one light source 100a disposed on the upper surface 100b1-1 of the first substrate 100b1. have.

The angle between the first substrate 100b1 and the second substrate 100b2 may be an acute angle.

Subsequently, the first substrate 100b1 has an upper surface 100b1-1 facing the side surface 202 of the light guide plate 200 and a lower surface 100b1 facing the upper surface 100b1-1 of the first substrate 100b1. -2).

Here, as shown in FIG. 5A, the upper surface 100b1-1 of the first substrate 100b1 and the lower surface 100b1-2 of the first substrate 100b1 are disposed to be inclined with respect to the side surface 202 of the light guide plate 200. Can be.

In addition, the upper surface 100b1-1 of the first substrate 100b1 and the lower surface 100b1-2 of the first substrate 100b1 may be disposed in parallel to each other.

Therefore, in the first substrate 100b1, a region far from the second substrate 100b2 may have a thickness t1, and a region adjacent to the second substrate 100b2 may have a thickness t2, where the thickness t1 and the thickness t2 are the same. can do.

In some cases, as shown in FIG. 5B, the upper surface 100b1-1 of the first substrate 100b1 is disposed to be inclined with respect to the side surface 202 of the light guide plate 200, and the lower surface 100b1 of the first substrate 100b1. −2 may be disposed parallel to the side surface 202 of the light guide plate 200.

In addition, the upper surface 100b1-1 of the first substrate 100b1 and the lower surface 100b1-2 of the first substrate 100b1 may not be parallel to each other.

Therefore, in the first substrate 100b1, a region far from the second substrate 100b2 may have a thickness t1, and a region adjacent to the second substrate 100b2 may have a thickness t2, where the thickness t1 and the thickness t2 are different from each other. Can be.

Here, the thickness t1 may be thicker than the thickness t2.

As such, when the thickness t1 is thicker than the thickness t2, even when the light guide plate 200 is expanded in the direction of the first substrate 100b1, the first substrate 100b1 may maintain a stable structure without being pushed by the light guide plate 200. .

6 is a cross-sectional view illustrating a distance between a first substrate and a light guide plate according to the second embodiment.

As shown in FIG. 6, the light source module 100 may be disposed on the side surface 202 of the light guide plate 200, but may be disposed at a predetermined interval apart.

Meanwhile, the first substrate 100b1 includes an upper surface 100b1-1 on which the light source 100a is disposed, and the upper surface 100b1-1 of the first substrate 100b1 is adjacent to the second substrate 100b2. The first region, the second region adjacent to the first region and the light source 100a is disposed, and the third region adjacent to the second region may be included.

Here, the first region and the third region of the first substrate 100b1 are inclined with respect to the side surface 202 of the light guide plate 200, and the second region of the first substrate 100b1 is the side surface 202 of the light guide plate 200. May be parallel to

Therefore, as the first region and the third region of the first substrate 100b1 move away from the second substrate 100b2, the upper surface 100b1-1 of the first substrate 100b1 and the side surface of the light guide plate 200 ( The distance between 202 may gradually decrease.

For example, in the side surface 202 of the light guide plate 200, a vertical line passing through any point P3 located in a region far from the second substrate 100b2 is any point P13 in the third region of the first substrate 100b1. As you pass, point P3 and point P13 are separated by a distance d3.

The vertical line passing through any point P4 located in the region adjacent to the second substrate 100b2 among the side surfaces 202 of the light guide plate 200 passes through any point P14 of the first region of the first substrate 100b1. When, point P4 and point P14 are separated by distance d4.

Here, the distance d3 between the point P3 and the point P13 may be closer than the distance d4 between the point P4 and the point P14.

Further, the distance d3 between the point P3 and the point P13 may be closer than the distance between the side surface 202 of the light guide plate 200 and the second area of the first substrate 100b1, and the distance d4 between the point P4 and the point P14. May be greater than the distance between the side surface 202 of the light guide plate 200 and the second region of the first substrate 100b1.

As such, the second region of the first substrate 100b1 on which the light source 100a is disposed is disposed in parallel to the side surface 202 of the light guide plate 200, so that the light output direction of the light source 100a is the light guide plate 200. Since the light is directly directed to the side surface 202, the brightness of the light unit can be increased even at low power.

7A and 7B are sectional views showing the thickness of the first substrate according to the second embodiment.

As shown in FIGS. 7A and 7B, the light source module may be disposed on the side portion of the light guide plate 200, but may be disposed at a predetermined interval apart.

Here, as shown in FIG. 7A, the first substrate 100b1 includes a first region adjacent to the second substrate 100b2, a second region adjacent to the first region, and the light source 100a is disposed, and a second region. It may include an adjacent third region.

In this case, in the first region and the third region of the first substrate 100b1, the upper surface 100b1-1 of the first substrate 100b1 and the lower surface 100b1-2 of the first substrate 100b1 may be formed of a light guide plate ( It may be disposed inclined with respect to the side 202 of the 200.

In addition, in the first region and the third region of the first substrate 100b1, the upper surface 100b1-1 of the first substrate 100b1 and the lower surface 100b1-2 of the first substrate 100b1 are parallel to each other. Can be arranged.

In the second region of the first substrate 100b1, the upper surface 100b1-1 of the first substrate 100b1 is parallel to the side surface 202 of the light guide plate 200, and The lower surface 100b1-2 may be disposed to be inclined with respect to the side surface 202 of the light guide plate 200.

In addition, in the second region of the first substrate 100b1, the upper surface 100b1-1 of the first substrate 100b1 and the lower surface 100b1-2 of the first substrate 100b1 may not be parallel to each other. Can be.

Accordingly, the first region of the first substrate 100b1 may have a thickness t11, the second region of the first substrate 100b1 may have a thickness t12, and the third region of the first substrate 100b1 may have a thickness t13. have.

Here, the thickness t11 and the thickness t13 may be the same, and the thickness t12 may be thicker than the thickness t11 and the thickness t13.

In this case, the thickness t11 is constant as the first region of the first substrate 100b1 moves away from the second substrate 100b2, and the thickness t13 indicates that the third region of the first substrate 100b1 extends from the second substrate 100b2. As the distance increases, the thickness t12 may decrease as the second region of the first substrate 100b1 moves away from the second substrate 100b2.

In some cases, as shown in FIG. 7B, in the first region and the third region of the first substrate 100b1, the upper surface 100b1-1 of the first substrate 100b1 may be formed on the side surface 202 of the light guide plate 200. The lower surface 100b1-2 of the first substrate 100b1 may be disposed to be inclined relative to the side surface 202 of the light guide plate 200.

In addition, in the first region and the third region of the first substrate 100b1, the upper surface 100b1-1 of the first substrate 100b1 and the lower surface 100b1-2 of the first substrate 100b1 are parallel to each other. Can be arranged not to.

Subsequently, in the second region of the first substrate 100b1, the upper surface 100b1-1 of the first substrate 100b1 and the lower surface 100b1-2 of the first substrate 100b1 are side surfaces of the light guide plate 200. May be disposed parallel to 202.

In addition, in the second region of the first substrate 100b1, the upper surface 100b1-1 of the first substrate 100b1 and the lower surface 100b1-2 of the first substrate 100b1 may be disposed in parallel to each other. have.

Here, the thickness t11 may be thinner than the thickness t12 and the thickness t13, and the thickness t13 may be thicker than the thickness t12.

At this time, the thickness t11 gradually increases as the first region of the first substrate 100b1 moves away from the second substrate 100b2, and the thickness t13 indicates that the third region of the first substrate 100b1 has the second substrate 100b2. The distance t12 increases gradually, and the thickness t12 may be constant as the second region of the first substrate 100b1 moves away from the second substrate 100b2.

As such, when the thickness t13 is thicker than the thicknesses t11 and t12, even when the light guide plate 200 is expanded in the direction of the first substrate 100b1, the first substrate 100b1 is not pushed by the light guide plate 200 and maintains a stable structure. Can be.

8 is a cross-sectional view illustrating a distance between a second substrate and a light guide plate according to the first embodiment.

As shown in FIG. 8, the light source module may be disposed on the side portion of the light guide plate 200, and may be disposed at a predetermined interval apart.

Meanwhile, the second substrate 100b2 includes an upper surface 100b2-1 facing the lower surface 204 of the light guide plate 200, and the upper surface 100b2-1 of the second substrate 100b2 has a first surface. As the distance from the substrate 100b1 increases, the distance between the upper surface 100b2-1 of the second substrate 100b2 and the lower surface 204 of the light guide plate 200 may gradually decrease.

For example, a vertical line passing through a point P5 located in an area adjacent to the first substrate 100b1 among the lower surfaces 204 of the light guide plate 200 is an upper surface 100b2-1 of the second substrate 100b2. When passing either point P15, point P5 and point P15 are separated by a distance d11.

The vertical line passing through any point P6 located in a region far from the first substrate 100b1 among the lower surfaces 204 of the light guide plate 200 may be any of the upper surfaces 100b2-1 of the second substrate 100b2. When passing point P16, point P6 and point P16 are separated by a distance d12.

Here, the distance d11 between the point P5 and the point P15 may be farther than the distance d12 between the point P6 and the point P16.

In some cases, although not shown, the distance d11 between the points P5 and P15 and the distance d12 between the points P6 and P16 may be the same.

Here, if the distance d11 between the point P5 and the point P15 and the distance d12 between the point P6 and the point P16 are equal to each other, the upper surface 100b2-1 of the second substrate 100b2 is the lower surface of the light guide plate 200. Parallel to 204, the top surface of the first substrate 100b1 may be inclined with respect to the side surface 202 of the light guide plate 200.

9A and 9B are sectional views showing the thickness of the second substrate according to the first embodiment.

As shown in FIGS. 9A and 9B, the light source module may be disposed on the side portion of the light guide plate 200, but may be disposed at a predetermined interval apart.

Subsequently, the second substrate 100b2 may have an upper surface 100b2-1 facing the lower surface 204 of the light guide plate 200 and a lower surface facing the upper surface 100b2-1 of the second substrate 100b2. 100b2-2).

Here, as shown in FIG. 9A, the upper surface 100b2-1 of the second substrate 100b2 and the lower surface 100b2-2 of the second substrate 100b2 are inclined with respect to the lower surface 204 of the light guide plate 200. Can be arranged.

In addition, the upper surface 100b2-1 of the second substrate 100b2 and the lower surface 100b2-2 of the second substrate 100b2 may be disposed in parallel with each other.

Accordingly, the region adjacent to the first substrate 100b1 of the second substrate 100b2 may have a thickness t3, and the region far from the first substrate 100b1 may have a thickness t4, where the thickness t3 and the thickness t4 are the same. can do.

In some cases, as shown in FIG. 9B, the upper surface 100b2-1 of the second substrate 100b2 is disposed to be inclined with respect to the lower surface 204 of the light guide plate 200, and the lower surface of the second substrate 100b2 ( 100b2-2 may be disposed parallel to the bottom surface 204 of the light guide plate 200.

In addition, the upper surface 100b2-1 of the second substrate 100b2 and the lower surface 100b2-2 of the second substrate 100b2 may not be parallel to each other.

Accordingly, the region adjacent to the first substrate 100b1 of the second substrate 100b2 may have a thickness t3, and the region far from the first substrate 100b1 may have a thickness t4, where the thickness t3 and the thickness t4 are different from each other. Can be.

Here, the thickness t4 may be thicker than the thickness t3.

As such, when the thickness t4 is thicker than the thickness t3, the second substrate 100b2 supports the lower surface 204 of the light guide plate 200 even when the light guide plate 200 is expanded in the direction of the first substrate 100b1. The first substrate 100b1 may maintain a stable structure without being pushed by the light guide plate 200.

In addition, since the lower surface 100b2-2 of the second substrate 100b2 is stably contacted with a bottom cover (not shown), the efficiency of dissipation of heat generated from the light source 100a may be improved.

10 is a cross-sectional view illustrating a distance between a second substrate and a light guide plate according to the second embodiment.

As shown in FIG. 10, the light source module may be disposed on the side portion of the light guide plate 200, and may be disposed at a predetermined interval apart.

Meanwhile, the second substrate 100b2 may include a fourth region adjacent to the first substrate 100b1 and a fifth region adjacent to the fourth region and facing the lower surface 204 of the light guide plate 200. .

Here, the fourth region of the second substrate 100b2 is inclined with respect to the lower surface 204 of the light guide plate 200, and the fifth region of the second substrate 100b2 is inclined to the lower surface 204 of the light guide plate 200. Can be parallel to each other.

In this case, the fourth region of the second substrate 100b2 is disposed not to face the lower surface 204 of the light guide plate 200, and the fifth region of the second substrate 100b2 is the lower surface 204 of the light guide plate 200. ) May be arranged to face.

Therefore, as the fourth region of the second substrate 100b2 moves away from the first substrate 100b1, from the upper surface 100b2-1 of the second substrate 100b2 and the lower surface 204 of the light guide plate 200. The distance between the extended extension lines EL may gradually decrease.

For example, of the extension lines EL1 extending along the lower surface 204 of the light guide plate 200, a vertical line passing through a point P7 located in an area adjacent to the first substrate 100b1 is formed on the second substrate 100b2. When passing one point P17 in the four areas, the points P7 and P17 are separated by the distance d13.

The vertical line passing through any point P8 located in a region far from the first substrate 100b1 among the extension lines EL1 extending along the lower surface 204 of the light guide plate 200 is the fourth region of the second substrate 100b2. When passing either point P18, point P8 and point P18 are separated by distance d14.

Here, the distance d14 between the point P8 and the point P18 may be closer than the distance d13 between the point P7 and the point P17.

Also, the distance d13 and the distance d14 may be farther than the distance between the lower surface 204 of the light guide plate 200 and the fifth region of the second substrate 100b2.

As such, the fifth region of the second substrate 100b2 is disposed in parallel to the lower surface 204 of the light guide plate 200, so that the second substrate is expanded even if the light guide plate 200 is expanded in the direction of the first substrate 100b1. Since the 100b2 supports the lower surface 204 and the reflector (not shown) of the light guide plate 200 without damage, the first substrate 100b1 is not pushed by the light guide plate 200 and can maintain a stable structure.

In addition, since the bottom surface 100b2-2 of the second substrate 100b2 is in stable contact with a bottom cover (not shown) and has a large contact area, the efficiency of dissipation of heat generated from the light source 100a may be improved. .

11A and 11B are sectional views showing the thickness of the second substrate according to the second embodiment.

As illustrated in FIGS. 11A and 11B, the light source module may be disposed on the side portion of the light guide plate 200, but may be disposed at a predetermined interval apart.

Here, as shown in FIG. 11A, the second substrate 100b2 includes a fourth region adjacent to the first substrate 100b1 and a fifth region adjacent to the fourth region and facing the lower surface 204 of the light guide plate 200. It may include.

In this case, the fourth region of the second substrate 100b2 is inclined with respect to the lower surface 204 of the light guide plate 200, and the fifth region of the second substrate 100b2 is formed on the lower surface 204 of the light guide plate 200. The fourth region of the second substrate 100b2 may be disposed not to face the lower surface 204 of the light guide plate 200, and the fifth region of the second substrate 100b2 may be disposed on the light guide plate 200. It may be arranged to face the lower surface 204.

In the fourth region of the second substrate 100b2, the upper surface 100b2-1 of the second substrate 100b2 and the lower surface 100b2-2 of the second substrate 100b2 are lower than the light guide plate 200. It may be disposed inclined with respect to face 204.

In addition, in the fourth region of the second substrate 100b2, the upper surface 100b2-1 of the second substrate 100b2 and the lower surface 100b2-2 of the second substrate 100b2 may be disposed in parallel to each other. have.

In the fifth region of the second substrate 100b2, the upper surface 100b2-1 of the second substrate 100b2 and the lower surface 100b1-2 of the first substrate 100b1 are lower than the light guide plate 200. It may be disposed parallel to the face 204.

In addition, in the fifth region of the second substrate 100b2, the upper surface 100b2-1 of the second substrate 100b2 and the lower surface 100b2-2 of the second substrate 100b2 may be disposed in parallel to each other. have.

Accordingly, the fourth region of the second substrate 100b2 may have a thickness t14, and the fifth region of the second substrate 100b2 may have a thickness t15, wherein the thickness t14 and the thickness t15 may be the same.

In some cases, as shown in FIG. 11B, in the fourth region of the second substrate 100b2, the upper surface 100b2-1 of the second substrate 100b2 is inclined with respect to the lower surface 204 of the light guide plate 200. The lower surface 100b2-2 of the second substrate 100b2 may be disposed in parallel to the lower surface 204 of the light guide plate 200.

Also, in the fourth region of the second substrate 100b2, the upper surface 100b2-1 of the second substrate 100b2 and the lower surface 100b2-2 of the second substrate 100b2 may not be parallel to each other. Can be.

Subsequently, in the fifth region of the second substrate 100b2, the upper surface 100b2-1 of the second substrate 100b2 and the lower surface 100b2-2 of the second substrate 100b2 are lower than the light guide plate 200. It may be disposed parallel to the face 204.

Therefore, the fourth region of the second substrate 100b2 may have a thickness t14, and the fifth region of the second substrate 100b2 may have a thickness t15.

Here, the thickness t14 may be thinner than the thickness t15.

In this case, the thickness t14 gradually increases as the fourth region of the second substrate 100b2 moves away from the first substrate 100b1, and the thickness t15 includes the first substrate 100b1 in the fifth region of the second substrate 100b2. It may be constant away from it.

As such, when the thickness t15 is thicker than the thickness t14, even when the light guide plate 200 is expanded in the direction of the first substrate 100b1, the second substrate 100b2 is not exposed to the lower surface 204 and the reflector of the light guide plate 200. Since the first substrate 100b1 is not damaged by the light guide plate 200, the stable structure can be maintained.

12A to 12C are cross-sectional views illustrating a distance between the first substrate and the bottom cover.

As shown in FIGS. 12A to 12C, the light source module may be disposed on the side portion of the light guide plate 200, but may be disposed at a predetermined interval apart.

In addition, the first substrate 100b1 may be disposed to face a lateral plate of the bottom cover 400, and the second substrate 100b2 may be disposed to face a bottom plate of the bottom cover 400. .

Here, at least one of the first substrate 100b1 and the second substrate 100b2 may contact the bottom cover 400.

Subsequently, the first substrate 100b1 may include an upper surface 100b1-1 facing the side surface 202 of the light guide plate 200 and a lower surface 100b1-2 facing the side plate of the bottom cover 400. have.

Here, as shown in FIG. 12A, as the lower surface 100b1-2 of the first substrate 100b1 moves away from the second substrate 100b2, the bottom surface 100b1-2 and the bottom cover of the first substrate 100b1 are located. The distance between the side plates of 400 may gradually increase.

In this case, the side plate of the bottom cover 400 may be parallel to the side surface 202 of the light guide plate 200, and the first substrate 100b1 may be inclined with respect to the side surface 202 of the light guide plate 200.

Therefore, the side plate of the bottom cover 400 and the first substrate 100b1 may be disposed not to be parallel to each other.

For example, of the side plates of the bottom cover 400, a vertical line passing through any point P9 located in a region far from the bottom plate of the bottom cover 400 is formed on the lower surface 100b1-2 of the first substrate 100b1. When passing one point P10, points P9 and P10 are separated by a distance d16.

The vertical line passing through any point P19 located in an area adjacent to the bottom plate of the bottom cover 400 is one of the lower surfaces 100b1-2 of the first substrate 100b1 among the side plates of the bottom cover 400. When passing point P20, point P19 and point P20 are separated by a distance d15.

Here, the distance d16 between the point P9 and the point P10 may be farther than the distance d15 between the point P19 and the point P20.

In some cases, as shown in FIG. 12B, as the lower surface 100b1-2 of the first substrate 100b1 moves away from the second substrate 100b2, the lower surface 100b1-2 of the first substrate 100b1 may be separated from each other. The distance between the side plates of the bottom cover 400 may be constant.

In this case, the side plate of the bottom cover 400 and the first substrate 100b1 may be disposed to be inclined with respect to the side surface 202 of the light guide plate 200.

Therefore, the side plate of the bottom cover 400 and the first substrate 100b1 may be disposed in parallel with each other.

Here, the distance d16 between the point P9 and the point P10 and the distance d15 between the point P19 and the point P20 may be equal to each other.

In another case, as shown in FIG. 12C, the lower surface 100b1-2 of the first substrate 100b1 and the side plate of the bottom cover 400 may contact each other.

In addition, the bottom plate of the second substrate 100b2 and the bottom cover 400 may also contact each other.

In the embodiment of FIG. 12C, since both the first substrate 100b1 and the second substrate 100b2 of the light source module contact the bottom cover 400, heat emission efficiency may be maximized.

In addition, since the side plate of the bottom cover 400 is disposed to be inclined with respect to the side surface 202 of the light guide plate 200, not only the size of the bezel can be minimized, but also the light loss can be prevented, and the light guide plate is expanded. Damage to the light source module may be prevented.

13A to 13C are cross-sectional views illustrating a distance between the first substrate and the panel guide.

As shown in FIGS. 13A to 13C, the light source module may be disposed on the side portion of the light guide plate 200, but may be disposed at a predetermined interval apart.

In addition, the first substrate 100b1 may face the panel guide 500, and the second substrate 100b2 may be disposed to face the bottom cover 400.

Here, the second substrate 100b2 may be in contact with the bottom cover 400.

Subsequently, the first substrate 100b1 may include an upper surface 100b1-1 facing the side surface 202 of the light guide plate 200 and a lower surface 100b1-2 facing the panel guide 500.

Here, as shown in FIG. 13A, the panel guide 500 may be disposed between the bottom surface 100b1-2 and the bottom cover 400 of the first substrate 100b1, and the bottom surface of the first substrate 100b1 ( As the distance 100b1-2 moves away from the second substrate 100b2, the distance between the bottom surface 100b1-2 of the first substrate 100b1 and the panel guide 500 may gradually increase.

In this case, the panel guide 500 extends from the body portion 500a facing the lower surface 100b1-2 of the first substrate 100b1, and extends from the body portion 500a of the light source 100a and the light guide plate 200. The cover 500b may cover a portion of the upper surface, wherein the body 500a of the panel guide 500 is parallel to the side surface 202 of the light guide plate 200, and the first substrate 100b1 is The light guide plate 200 may be disposed to be inclined with respect to the side surface 202 of the light guide plate 200.

Therefore, the body portion 500a of the panel guide 500 and the first substrate 100b1 may be disposed not to be parallel to each other.

For example, in the body portion 500a of the panel guide 500, a vertical line passing through any point P21 located in a region far from the cover portion 500b of the panel guide 500 is lower than the first substrate 100b1. When passing through any one point P22 of the surface 100b1-2, the point P21 and the point P22 are separated by the distance d17.

In addition, a vertical line passing through a point P41 located in an area adjacent to the cover portion 500b of the panel guide 500 is a lower surface (eg, a lower surface) of the first substrate 100b1 in the body portion 500a of the panel guide 500. When passing one point P42 of 100b1-2), the point P41 and the point P42 are separated by the distance d18.

Here, the distance d18 between the point P41 and the point P42 may be farther than the distance d17 between the point P21 and the point P22.

In addition, the body portion of the panel guide 500 and the bottom cover 400 may be disposed in contact with each other.

In this case, the panel guide 500 may have a stable arrangement structure through coupling with the bottom cover 400.

In some cases, as shown in FIG. 13B, the lower surface 100b1-2 and the panel guide 500 of the first substrate 100b1 may be in contact with each other.

In this case, the body portion 500a of the panel guide 500 and the first substrate 100b1 may be inclined with respect to the side surface 202 of the light guide plate 200.

In addition, the body portion 500a of the panel guide 500 and the bottom cover 400 may be disposed at a predetermined interval apart.

13B may not only stably support the first substrate 100b1, but may also prevent damage to the light source module due to expansion of the light guide plate, and may include a body portion and a first substrate of the panel guide 500. Due to the contact of (100b1) it is possible to increase the heat release efficiency.

As another example, as shown in FIG. 13C, the lower surface 100b1-2 and the panel guide 500 of the first substrate 100b1 may be in contact with each other.

In addition, the body portion 500a and the bottom cover 400 of the panel guide 500 may be disposed in contact with each other.

In the embodiment of FIG. 13C, since the panel guide 500 contacts the first substrate 100b1 and the bottom cover 400 of the light source module, the panel guide 500 may not only stably support but also damage the light source module due to expansion of the light guide plate. The heat dissipation efficiency may be increased due to the contact between the body of the panel guide 500 and the first substrate 100b1.

14A to 14C are cross-sectional views illustrating a distance between the second substrate and the bottom cover.

As shown in FIGS. 14A to 14C, the light source module may be disposed on the side portion of the light guide plate 200, but may be disposed at a predetermined interval apart.

Here, the light source module may include a first substrate 100b1 and a second substrate 100b2, and may include at least one light source disposed on the first substrate 100b1.

In this case, the first substrate 100b1 is disposed in the first direction so as to face the side surface of the light guide plate 200, and the second substrate 100b2 extends from the first substrate 100b1 to lower the surface 204 of the light guide plate 200. It may be arranged in the second direction to face a part.

Subsequently, the second substrate 100b2 includes an upper surface 100b2-1 facing the lower surface 204 of the light guide plate 200 and a lower surface 100b2-2 facing the bottom plate of the bottom cover 400. can do.

Here, as shown in FIG. 14A, as the bottom surface 100b2-2 of the second substrate 100b2 moves away from the first substrate 100b1, the bottom surface 100b2-2 and the bottom cover of the second substrate 100b2 are located. The distance between the bottom plates of 400 may gradually increase.

In this case, the bottom plate of the bottom cover 400 may be parallel to the bottom surface 204 of the light guide plate 200, and the second substrate 100b2 may be inclined with respect to the bottom surface 204 of the light guide plate 200. .

Therefore, the bottom plate of the bottom cover 400 and the second substrate 100b2 may be disposed not parallel to each other.

For example, in the bottom plate of the bottom cover 400, a vertical line passing through a point P44 located in a region far from the first substrate 100b1 is located on any lower surface 100b2-2 of the second substrate 100b2. As you pass point P43, point P44 and point P43 are separated by distance d20.

The vertical line passing through any one point P24 located in an area adjacent to the first substrate 100b1 is one of the bottom surfaces 100b2-2 of the second substrate 100b2 among the bottom plates of the bottom cover 400. As you pass P23, point P24 and point P23 are separated by a distance d19.

Here, the distance d20 between the point P44 and the point P43 may be farther than the distance d19 between the point P24 and the point P23.

In some cases, as shown in FIG. 14B, the entire bottom surface 100b2-2 of the second substrate 100b2 and the bottom plate of the bottom cover 400 may be in contact with each other.

In this case, the bottom plate of the bottom cover 400 and the second substrate 100b2 may be inclined with respect to the bottom surface 204 of the light guide plate 200.

In the embodiment of FIG. 14B, since the entire bottom surface 100b2-2 of the second substrate 100b2 of the light source module contacts the bottom cover 400, heat emission efficiency may be maximized.

In addition, since the bottom plate of the bottom cover 400 supports the entire lower surface 100b2-2 of the second substrate 100b2, even if an external force due to an internal force or a physical impact due to the light guide plate expansion or the like is applied, The second substrate 100b2 may maintain a stable structure.

As another example, as shown in FIG. 14C, a portion of the bottom surface 100b2-2 of the second substrate 100b2 and the bottom plate of the bottom cover 400 may contact each other.

In this case, a portion of the bottom plate of the bottom cover 400 may be disposed to be inclined with respect to the bottom surface 204 of the light guide plate 200, and the remaining portion of the bottom plate of the bottom cover 400 may be a bottom surface of the light guide plate 200. May be parallel to 204.

In addition, a portion of the bottom plate 400 which contacts the second substrate 100b2 may be disposed to be inclined with respect to the bottom surface 204 of the light guide plate 200, and may not be in contact with the second substrate 100b2. The unworked portion may be parallel to the bottom surface 204 of the light guide plate 200.

In the embodiment of FIG. 14C, since a portion of the lower surface 100b2-2 of the second substrate 100b2 of the light source module contacts the bottom cover 400, heat emission efficiency may be improved.

In addition, since the bottom plate of the bottom cover 400 supports a part of the lower surface 100b2-2 of the second substrate 100b2, even if an external force due to an internal force or a physical impact due to the light guide plate expansion or the like is applied, The second substrate 100b2 may maintain a stable structure.

15 is a cross-sectional view illustrating a supporter between the second substrate and the bottom cover.

As shown in FIG. 15, the light source module may be disposed on the side portion of the light guide plate 200, and may be disposed at a predetermined interval apart.

Here, as the lower surface 100b2-2 of the second substrate 100b2 moves away from the first substrate 100b1, the bottom surface 100b2-2 of the second substrate 100b2 and the bottom of the bottom cover 400 are located. The distance between the plates can gradually increase.

In addition, at least one supporter 410 may be disposed between the bottom surface 100b2-2 of the second substrate 100b2 and the bottom plate of the bottom cover 400.

Here, when there are a plurality of supporters 410, the supporters 410 may be arranged at regular intervals.

In addition, the supporters 410 adjacent to each other may have different heights h.

For example, among the bottom plates of the bottom cover 400, the height h22 of the supporter 410 located in an area far from the bottom plate of the bottom cover 400 is located in an area adjacent to the bottom plate of the bottom cover 400. It may be higher than the height h21 of the supporter 410.

In the embodiment of FIG. 15, since the supporter 410 supports the bottom plate of the bottom cover 400 and the bottom surface 100b2-2 of the second substrate 100b2, an internal force or physical shock caused by the expansion of the light guide plate, or the like. Even when an external force is applied, the second substrate 100b2 of the light source module may maintain a stable structure.

16 is a cross-sectional view illustrating the reflector between the second substrate and the light guide plate.

As shown in FIG. 16, the light source module may be disposed on the side portion of the light guide plate 200, and may be disposed at a predetermined interval apart.

Here, the reflector 300 may be disposed between the upper surface 100b2-1 of the second substrate 100b2 and the lower surface 204 of the light guide plate 200.

In this case, the reflector 300 may contact the upper surface 100b2-1 of the second substrate 100b2 and the lower surface 204 of the light guide plate 200.

For example, the reflector 300 may contact only a portion of the upper surface 100b2-1 of the second substrate 100b2 and may contact the entire region of the lower surface 204 of the light guide plate 200.

Alternatively, the reflector 300 may contact the entire area of the upper surface 100b2-1 of the second substrate 100b2 and may contact the entire area of the lower surface 204 of the light guide plate 200.

In addition, the reflector 200 may be any one of a reflective coating film and a reflective coating material layer.

In some cases, the reflector 200 may have a plurality of reflective patterns formed on the surface facing the light guide plate 200, and the surface of the reflective pattern may be flat or curved.

Here, the reflector 200 may include a metal or metal oxide having a high reflectance such as aluminum (Al), silver (Ag), gold (Au), titanium dioxide (TiO ₂ ), or the like.

In the embodiment of FIG. 16, the reflector 300 is disposed between the upper surface 100b2-1 of the second substrate 100b2 and the lower surface 204 of the light guide plate 200, thereby providing the first substrate 100b1 of the light source module. ) And the light loss that may appear between the side of the light guide plate 200 to increase the brightness of the light unit.

In addition, since the second substrate 100b2 supports a part of the reflector 300, the reflector 300 may maintain a stable structure.

17 is a cross-sectional view illustrating a circuit area of a second substrate.

As illustrated in FIG. 17, the light source module may be disposed on the side portion of the light guide plate 200, and may be disposed at a predetermined interval apart.

In addition, the second substrate 100b2 may include an upper surface 100b2-1 facing the lower surface 204 of the light guide plate 200 and a lower surface 100b2-2 facing the bottom cover.

Here, the second substrate 100b2 may include a dummy area and a circuit area.

The dummy region of the second substrate 100b2 is a region without an electrode pattern for driving a light source and may be disposed in an area facing the lower surface 204 of the light guide plate 200.

In addition, the dummy region of the second substrate 100b2 may be disposed on the upper surface 100b2-1 of the second substrate 100b2 facing the lower surface 204 of the light guide plate 200. 2 may be disposed on the bottom surface 100b2-2 of the substrate 100b2.

Subsequently, the circuit area of the second substrate 100b2 is an area including an electrode pattern for driving a light source and may be disposed in an area not facing the lower surface 204 of the light guide plate 200.

That is, the circuit region of the second substrate 100b2 is disposed in the region adjacent to the first substrate 100b1 in the second substrate 100b2, and the dummy region of the second substrate 100b2 is in the second substrate 100b2. The first substrate 100b1 may be disposed in a region far from the first substrate 100b1.

As such, the reason why the circuit area is not disposed in the area facing the lower surface 204 of the light guide plate 200 of the second substrate 100b2 is to secure sufficient space for arranging circuits for driving the light source. Because you can't.

In the embodiment of FIG. 17, the light source module may be stably driven and the life of the light source module may be increased by securing sufficient space for stably disposing circuits for driving the light source.

In some cases, a circuit region in which circuits for driving a light source are arranged may be disposed on both the first substrate 100b1 and the second substrate 100b2 where the light source is disposed, in which case, a sufficient area for circuit arrangement is provided. There is an advantage to secure.

Alternatively, the circuit region may be disposed only on the second substrate 100b2 except for the first substrate 100b1. In this case, since the second substrate 100b2 is in contact with the bottom cover, the emission of heat generated in the circuit region is effective. Can be.

As another example, the circuit region may be disposed only on the first substrate 100b1 except for the second substrate 100b2. In this case, a space may be structurally provided in the second substrate 100b2. If it is narrow, it can be effective.

18A and 18B are cross-sectional views showing a first substrate and a second substrate.

As shown in FIGS. 18A and 18B, the light source module may be disposed on the side portion of the light guide plate 200, but may be disposed at a predetermined interval apart.

Here, the light source module may include a substrate 100b including a first substrate 100b1 and a second substrate 100b2, and at least one light source 100a disposed on the first substrate 100b1.

As shown in FIG. 18A, the first substrate 100b1 and the second substrate 100b2 may be made of the same material, and the substrate 100b including the first substrate 100b1 and the second substrate 100b2 may be formed of a metal material. It may be a PCB (Printed Circuit Board) substrate.

Here, the substrate 100b may be a single layer PCB or a multilayer PCB, and in some cases, a metal printed circuit board (MPCB), a metal core printed circuit board (MCPCB), and a flexible printed circuit board ( FPCB: Flexible PCB) and a ceramic substrate can be any one.

Here, the substrate 100b may be formed of a material that efficiently reflects light, or may be formed or coated with a color that effectively reflects light, for example, white, silver, or the like.

In addition, the substrate 100b may include any one of a reflective coating film and a reflective coating material layer.

In this case, the reason why the substrate 100b is used as a printed circuit board (PCB) substrate made of a metal material is that heat generated from the light source 100a can be effectively released.

As another example, as shown in FIG. 18B, the first substrate 100b1 and the second substrate 100b2 may be formed of different materials.

Here, the first substrate 100b1 and the second substrate 100b2 may be a printed circuit board (PCB) substrate made of a metal material, and may be made of different metal materials.

For example, when the first substrate 100b1 contacts the light source 100a and the second substrate 100b2 contacts the bottom cover, the second substrate 100b2 has a higher thermal conductivity than the first substrate 100b1. It may be made of a metal material of high material.

Here, at least one of the first substrate 100b1 and the second substrate 100b2 may be formed with any one of a reflective coating film and a reflective coating material layer, and the light generated by the light source 100a may be used as the light guide plate 200. Can be reflected in the direction of.

19A to 19C are cross-sectional views illustrating thicknesses of a first substrate and a second substrate.

As shown in FIGS. 19A to 19C, the light source module may be disposed on the side portion of the light guide plate 200, but may be disposed at a predetermined interval apart.

Subsequently, the first substrate 100b1 may be formed to a thickness t21, and the second substrate 100b2 may be formed to a thickness t31.

Here, as illustrated in FIG. 19A, the thickness t21 of the first substrate 100b1 and the thickness t31 of the second substrate 100b2 may be the same.

In some cases, as shown in FIGS. 19B and 19C, the thickness t21 of the first substrate 100b1 and the thickness t31 of the second substrate 100b2 may be different from each other.

That is, as shown in FIG. 19B, the thickness t21 of the first substrate 100b1 may be thicker than the thickness t31 of the second substrate 100b2, and as shown in FIG. 19C, the thickness t21 of the first substrate 100b1 may be the second substrate. It may be thinner than thickness t31 of 100b2.

Here, the embodiment of FIG. 19B and the embodiment of FIG. 19C may be structurally diversified in consideration of the contact area of the substrate 100b and the bottom cover (not shown), thermal resistance, thickness of the bottom cover, and the like.

20A to 20D are cross-sectional views showing uneven patterns of a substrate.

As shown in FIGS. 20A to 20D, the light source module may be disposed on the side portion of the light guide plate 200, but may be disposed at a predetermined interval apart.

Subsequently, the first substrate 100b1 includes an upper surface 100b1-1 facing the side surface 202 of the light guide plate 200 and a lower surface 100b1-2 facing the upper surface 100b1-1, The second substrate 100b2 may include an upper surface 100b2-1 facing the lower surface 204 of the light guide plate 200 and a lower surface 100b2-2 facing the upper surface 100b2-1. .

Here, as shown in FIG. 20A, the upper surface 100b1-1 and the lower surface 100b1-2 of the first substrate 100b1 and the upper surface 100b2-1 of the second substrate 100b2 may have an uneven pattern 110. The flat surface of the second substrate 100b2 may have a concave-convex pattern 110 on the bottom surface 100b2-2.

In this case, the concave-convex pattern 110 has a projecting portion projecting from the lower surface 100b2-2 of the second substrate 100b2, and the projecting portions are formed of first and second surfaces facing each other. The angle between the face and the second face may be an obtuse angle or an acute angle.

In some cases, as shown in FIG. 20B, the upper surface 100b1-1 and the lower surface 100b1-2 of the first substrate 100b1 are flat without the uneven pattern 110 and the upper surface of the second substrate 100b2. Concave-convex pattern 110 may be formed at 100b2-1 and lower surface 100b2-2.

As another example, as shown in FIG. 20C, the upper surface 100b1-1 of the first substrate 100b1, the upper surface 100b2-1 and the lower surface 100b2-2 of the second substrate 100b2 may have an uneven pattern ( The flat surface without the 110, the concave-convex pattern 110 may be formed on the lower surface 100b1-2 of the first substrate 100b1.

In another case, as shown in FIG. 20D, the upper surface 100b1-1 of the first substrate 100b1 is flat without the uneven pattern 110, and the lower surface 100b1-2, the first surface of the first substrate 100b1. The uneven pattern 110 may be formed on the upper surface 100b2-1 and the lower surface 100b2-2 of the substrate 100b2.

Thus, the reason for forming the uneven pattern 110 is that the heat dissipation efficiency can be increased by increasing the heat dissipation area of the first substrate 100b1 and the second substrate 100b2.

In addition, the reason why the uneven pattern 110 is not formed on the upper surface 100b1-1 of the first substrate 100b1 is that circuit patterns for driving the light source 100a must be disposed.

21A to 21D are cross-sectional views illustrating a groove of the bottom cover according to the first embodiment.

As shown in FIGS. 21A to 21D, the light source module may be disposed on the side portion of the light guide plate 200, but may be disposed at a predetermined interval apart.

Here, the second substrate 100b2 may be in contact with the bottom cover 400, and may be disposed in the groove 420 of the bottom cover 400.

That is, a recess 420 may be disposed in an edge region of the bottom cover 400, and a second substrate 100b2 may be disposed in the groove 420 of the bottom cover 400.

In addition, the bottom surface 420a of the groove 420 of the bottom cover 400 may be disposed parallel to the bottom surface 204 of the light guide plate 200.

As shown in FIG. 21A, the bottom surface 420a of the groove 420 of the bottom cover 400 contacts the bottom surface 100b2-2 of the second substrate 100b2, and the groove 420 of the bottom cover 400. The side surface 420b of the second substrate 100b2 may be spaced apart from the side surface 100b2-3.

The height h2 between the upper surface 100b2-1 and the lower surface 100b2-2 of the second substrate 100b2 may be equal to the height h1 of the side surface 420b of the groove 420 of the bottom cover 400. have.

Therefore, the upper surface 100b2-1 of the second substrate 100b2 does not protrude outside the groove 420 of the bottom cover 400.

In some cases, as shown in FIG. 21B, the bottom surface 420a of the groove 420 of the bottom cover 400 contacts the bottom surface 100b2-2 of the second substrate 100b2, and The side surface 420b of the groove 420 may be in contact with the side surface 100b2-3 of the second substrate 100b2.

As another example, as shown in FIG. 21C, the bottom surface 420a of the groove 420 of the bottom cover 400 contacts the bottom surface 100b2-2 of the second substrate 100b2, and The side surface 420b of the groove 420 may be in contact with the side surface 100b2-3 of the second substrate 100b2.

The height h2 between the upper surface 100b2-1 and the lower surface 100b2-2 of the second substrate 100b2 may be lower than the height h1 of the side surface 420b of the groove 420 of the bottom cover 400. .

Therefore, the upper surface 100b2-1 of the second substrate 100b2 may be disposed in the groove 420 of the bottom cover 400.

In another case, as shown in FIG. 21D, the bottom surface 420a of the groove 420 of the bottom cover 400 contacts the bottom surface 100b2-2 of the second substrate 100b2, and the bottom cover 400 The side surface 420b of the groove 420 may contact the side surface 100b2-3 of the second substrate 100b2.

The height h2 between the upper surface 100b2-1 and the lower surface 100b2-2 of the second substrate 100b2 may be higher than the height h1 of the side surface 420b of the groove 420 of the bottom cover 400. have.

Therefore, the upper surface 100b2-1 of the second substrate 100b2 may protrude outside the groove 420 of the bottom cover 400.

As such, the reason for disposing the second substrate 100b2 in the groove 420 of the bottom cover 400 is that not only the second substrate 100b2 can be stably disposed but also the bottom cover 400 and the second This is because the heat dissipation efficiency can be increased by increasing the contact area of the substrate 100b2.

22 is a cross-sectional view illustrating a groove of the bottom cover according to the second embodiment.

As shown in FIG. 22, the light source module may be disposed on the side portion of the light guide plate 200, and may be disposed at a predetermined interval apart.

Here, the light source module may include a substrate 100b including the first substrate 100b1 and the second substrate 100b2 and at least one light source disposed on the first substrate 100b1.

The bottom surface 420a of the groove 420 of the bottom cover 400 may be inclined with respect to the bottom surface 204 of the light guide plate 200.

Here, the bottom surface 420a of the groove 420 of the bottom cover 400 is in contact with the bottom surface 100b2-2 of the second substrate 100b2, and the side surface of the groove 420 of the bottom cover 400 is formed. The 420b may be spaced apart from or in contact with the side surface 100b2-3 of the second substrate 100b2.

Accordingly, the lower surface 100b2-2 of the second substrate 100b2 may be inclined with respect to the lower surface 204 of the light guide plate 200.

In addition, the top surface 400a and the bottom surface 400b of the bottom cover 400 may be disposed parallel to the bottom surface 204 of the light guide plate 200.

23 is a cross-sectional view illustrating a side surface of the light guide plate according to the first embodiment.

As shown in FIG. 23, the light source module 100 may be disposed on the side portion of the light guide plate 200, and may be disposed at a predetermined interval apart.

Here, the light source module 100 may include a substrate 100b including a first substrate 100b1 and a second substrate 100b2, and at least one light source 100a disposed on the first substrate 100b1. have.

Subsequently, the side surface 202 of the light guide plate 200 may be an inclined surface.

Here, the angle θ12 between the side surface 202 of the light guide plate 200 and the top surface 206 of the light guide plate 200 is an obtuse angle, and the side surface 202 of the light guide plate 200 and the bottom surface 204 of the light guide plate 200. The angle θ11 between may be an acute angle.

Next, the light source 100a of the light source module 100 may include a light emitting surface 100a1, wherein the light emitting surface 100a1 of the light source 100a is parallel to the side surface 202 of the light guide plate 200 having an inclined surface. can do.

In addition, the upper surface 100b1-1 of the first substrate 100b1 of the light source module 100 may also be parallel to the side surface 202 of the light guide plate 200 having the inclined surface.

As such, the reason why the side surface 202 of the light guide plate 200 is formed to be inclined is that when the upper surface 100b1-1 of the first substrate 100b1 is inclined, the light emitting surface 100a1 and the light guide plate of the light source 100a are inclined. By arranging the side surfaces 202 in parallel with the light, the light emitted from the light source 100a can be transmitted to the light guide plate 200 with almost no loss, and the size of the bezel can be minimized. Because.

24 is a cross-sectional view illustrating a side surface of the light guide plate according to the second embodiment.

As illustrated in FIG. 24, the light source module 100 may be disposed on the side portion of the light guide plate 200, but may be disposed at a predetermined interval apart.

In addition, a groove 211 may be disposed on the side surface 202 of the LGP 200, and a light source 100a may be disposed in the groove 211 of the LGP 200.

Next, the light source 100a of the light source module 100 may include a light emitting surface 100a1, and the light emitting surface 100a1 of the light source 100a may have a bottom surface of the groove 211 of the light guide plate 200 having an inclined surface. May be parallel to.

Here, the light source 100a of the light source module 100 may be disposed at a predetermined distance from the bottom surface of the groove 211 of the light guide plate 200 in consideration of the expansion of the light guide plate 200.

As such, the reason for forming the grooves 211 in the side surface 202 of the light guide plate 200 is that light emitted from the light source 100a can be transmitted to the light guide plate 200 with almost no loss.

In addition, the reason why the side surface 202 of the light guide plate 200 is formed to be inclined is that, when the upper surface 100b1-1 of the first substrate 100b1 is inclined, the light emitting surface 100a1 and the light guide plate ( This is because the size of the bezel can be minimized by arranging the side surfaces 202 of the 200 in parallel.

25A to 25C show a stopper of the light source module, FIG. 25A is a perspective view, FIG. 25B is a sectional view, and FIG. 25C is a plan view.

As illustrated in FIGS. 25A to 25C, the light source module 100 may be disposed on the side surface of the light guide plate 200, but may be disposed at a predetermined interval apart.

Subsequently, a plurality of light sources 100a are disposed on the first substrate 100b1, and a stopper 120 may be disposed between the light sources 100a adjacent to each other.

Here, the height h11 of the stopper 120 may be higher than the height h12 of the light source 100a.

For example, the height h11 between the first substrate 100b1 and the top surface 120a of the stopper 120 is greater than the height h12 between the first substrate 100b1 and the light emitting surface 100a1 of the light source 100a. Can be high.

Thus, the distance d31 between the stopper 120 and the side surface 202 of the light guide plate 200 may be closer than the distance d32 between the light source 100a and the side surface 202 of the light guide plate 200.

For example, the distance d31 between the upper surface 120a of the stopper 120 and the side surface 202 of the light guide plate 200 is defined between the light emitting surface 100a1 of the light source 100a and the side surface 202 of the light guide plate 200. May be closer than the distance d32.

Here, the stopper 120 may be a polymer resin capable of injection molding.

For example, the stopper 120 may include unsaturated polyester, methyl methacrylate, ethyl methacrylate, isobutyl methacrylate, and normal butyl methacrylate. isobutyl methacrylate, acrylic acid, methacrylic acid, hydroxyethyl methacrylate, hydroxyl propyl methacrylate, hydroxyethyl acrylate It may be at least one of acrylate, acrylamide, ethyl acrylate (ethyl acrylamide), isobutyl acrylate (isobutyl acrylamide), normal butyl acrylate (isobutyl acrylamide).

As such, the reason why the stopper 120 is disposed is that damage to the light source module 100 due to expansion of the light guide plate 200 can be prevented.

In some cases, a buffer member may be further disposed on the surface of the stopper 120. [

26A and 26B are plan views illustrating arrangement of stoppers of the light source module.

As shown in FIGS. 26A and 26B, a plurality of light sources 100a are disposed on the first substrate 100b1, and a stopper 120 may be disposed between adjacent light sources 100a. .

Here, as shown in FIG. 26A, one light source 100a may be disposed between the stopper 120 and the stopper 120. In some cases, as shown in FIG. 26B, between the stopper 120 and the stopper 120. A plurality of light sources 100a may be disposed.

As such, the number of stoppers 120 may be variously determined according to the degree of expansion of the light guide plate or the design structure of the light unit.

27A to 27C are cross-sectional views showing the arrangement of the top and bottom surfaces of the stopper.

As illustrated in FIGS. 27A to 27C, a plurality of light sources are disposed on the first substrate 100b1, and a stopper 120 may be disposed between adjacent light sources.

Here, the stopper 120 may include an upper surface 120a facing the side surface 202 of the light guide plate 200 and a lower surface 120b facing the first substrate 100b1.

In this case, as shown in FIG. 27A, the upper surface 120a and the lower surface 120b of the stopper 120 may be disposed to be inclined with respect to the side surface 202 of the light guide plate 200.

In some cases, as shown in FIG. 27B, the upper surface 120a of the stopper 120 is disposed parallel to the side surface 202 of the light guide plate 200, and the lower surface 120b of the stopper 120 is formed of the light guide plate 200. May be inclined with respect to the side 202 of the side wall.

As another example, as shown in FIG. 27C, the upper surface 120a and the lower surface 120b of the stopper 120 may be disposed parallel to the side surface 202 of the light guide plate 200.

In this case, a base member 125 may be disposed between the lower surface 120b of the stopper 120 and the first substrate 100b1.

Here, the base member 125 may serve to support the upper surface 120a of the stopper 120 to be parallel to the side surface 202 of the light guide plate 200.

As such, the reason why the upper surface 120a of the stopper 120 is disposed in parallel with the side surface 202 of the light guide plate 200 is because of the expansion of the light guide plate 200 and thus the side surface 202 of the light guide plate 200. This is to prevent the side surface 202 of the light guide plate 200 from being damaged when the stopper 120 contacts with the stopper 120.

28 is a cross-sectional view showing the buffer member of the stopper.

As illustrated in FIG. 28, a plurality of light sources are disposed on the first substrate 100b1, and a stopper 120 may be disposed between light sources adjacent to each other.

Here, the stopper 120 includes an upper surface 120a facing the side surface 202 of the light guide plate 200, and a buffer member 122 may be disposed on the upper surface 120a of the stopper 120.

As such, the reason why the buffer member 122 is disposed on the upper surface 120a of the stopper 120 is that the side surface 202 of the light guide plate 200 and the stopper 120 are in contact due to the expansion of the light guide plate 200. In order to prevent the side surface 202 of the light guide plate 200 from being damaged.

29A to 29C are cross-sectional views showing the layout of the panel guide.

As illustrated in FIGS. 29A to 29C, the light source module may be disposed on the side portion of the light guide plate 200, but may be disposed at a predetermined interval.

In this case, the first substrate 100b1 is disposed in the first direction so as to face the side surface of the light guide plate 200, and the second substrate 100b2 extends from the first substrate 100b1 to cover a portion of the lower surface of the light guide plate 200. It may be arranged in the second direction to face.

Here, the second substrate 100b2 may be in contact with the bottom cover 400.

Subsequently, the optical member 600 may be disposed above the light guide plate 200, and the reflector 300 may be disposed below the light guide plate 200.

Next, the panel guide 500 may be disposed on one side of the light guide plate 200.

In this case, the panel guide 500 may include a first segment 502 and a second segment 504. The first segment 502 may include a first substrate 100b1 and a bottom cover of the light source module. The second segment 504 may be bent and disposed in the direction of the light guide plate 200 from the end of the first segment 502.

As shown in FIG. 29A, the second segment 504 of the panel guide 500 may include a bottom surface 504a facing the top surface 206 of the light guide plate 200, and the second segment 504a of the panel guide 500 may include a second segment 504a. The bottom surface 504a of the segment 504 may be spaced apart from the top surface 206 of the light guide plate 200 by a distance d41.

The end of the second segment 504 of the panel guide 500 may be spaced apart from the end surface 600a of the optical member 600 by a distance d42.

In some cases, as shown in FIG. 29B, the second segment 504 of the panel guide 500 may include a lower surface 504a facing the upper surface 206 of the light guide plate 200, which may be a panel guide 500. The lower surface 504a of the second segment 504 may be spaced apart from the upper surface 206 of the light guide plate 200 by a distance d41.

The end of the second segment 504 of the panel guide 500 may be disposed on a portion of the upper surface 600b of the optical member 600.

As another example, as shown in FIG. 29C, the second segment 504 of the panel guide 500 may include a bottom surface 504a facing the top surface 206 of the light guide plate 200, which may be a panel guide 500. The bottom surface 504a of the second segment 504 may be disposed on a portion of the top surface 206 of the light guide plate 200.

The end of the second segment 504 of the panel guide 500 may be disposed to face the end of the optical member 600.

As another example, the optical member 600 may contact the second segment 504 of the panel guide 500 and be disposed away from the light guide plate 200.

As such, the panel guide 500 may be variously modified according to the design of the light unit, and may be omitted in some cases.

30 is a cross-sectional view for describing a light unit according to a second embodiment.

As shown in FIG. 30, the light unit includes a light source module 100, a light guide plate 200, a reflector 300, a bottom cover 400, A top cover 450, and an optical member 600.

Here, the substrate 100b may include a first substrate 100b1, a second substrate 100b2, and a third substrate 100b3.

In this case, the first substrate 100b1 is disposed in the first direction so as to face the side surface of the light guide plate 200, and the second substrate 100b2 extends from one side of the first substrate 100b1 and the lower surface of the light guide plate 200. It may be arranged in the second direction to face a part.

In addition, the third substrate 100b3 may be disposed in the second direction so as to extend from the other side of the first substrate 100b1 and face a portion of the upper surface of the light guide plate 200.

In addition, the light source 100a may be disposed on the first substrate 100b1.

Subsequently, an angle between the first substrate 100b1 and the second substrate 100b2 may be an acute angle, and an angle between the first substrate 100b1 and the third substrate 100b3 may be an obtuse angle or a right angle.

For example, the first substrate 100b1 may be inclined with respect to the side surface of the light guide plate 200, the second substrate 100b2 may be inclined with respect to the lower surface of the light guide plate 200, and the third substrate 100b3 may be inclined. It may be parallel to the upper surface of the light guide plate 200.

In some cases, the first substrate 100b1 may be inclined with respect to the side surface of the light guide plate 200, the second substrate 100b2 may be parallel to the bottom surface of the light guide plate 200, and the third substrate 100b3 may be inclined. It may be parallel to the upper surface of the light guide plate 200.

In another case, the first substrate 100b1 may be parallel to the side surface of the light guide plate 200, the second substrate 100b2 may be inclined with respect to the bottom surface of the light guide plate 200, and the third substrate 100b3 may be inclined. The silver may be parallel to the top surface of the light guide plate 200.

The reason why the angle between the first substrate 100b1 and the second substrate 100b2 is arranged at an acute angle is that damage to the light source module 100 due to expansion of the light guide plate 200 can be prevented. .

In addition, by arranging the third substrate 100b3 instead of the panel guide, the size of the bezel may be minimized when the light unit according to the embodiment is applied to the display device or the lighting system.

Here, at least one of the first substrate 100b1, the second substrate 100b2, and the third substrate 100b3 may be a PCB (Printed Circuit Board) substrate made of metal.

In addition, although the first substrate 100b1, the second substrate 100b2, and the third substrate 100b3 may be the same material, in some cases, may be different materials.

For example, the first substrate 100b1 and the second substrate 100b2 may be a conductor having high thermal conductivity, and the third substrate 100b3 may be a nonconductor having low thermal conductivity.

In another case, the second substrate 100b2 may be made of a metal material having a higher thermal conductivity than the first substrate 100b1.

Subsequently, the bottom cover 400 may include a bottom plate and a lateral plate disposed around the bottom plate.

Here, the reflector 300 and the second substrate 100b2 of the light source module 100 may be disposed on the bottom plate of the bottom cover 400, and the first plate of the light source module 100 may be disposed on the side plate of the bottom cover 400. The substrate 100b1 may be disposed.

The third substrate 100b3 of the light source module 100 may support a flat panel 800 such as a display panel, and may be disposed to cover the light source 100a.

Next, the top cover 450 may be disposed to be fastened outside the bottom cover 400 to cover the third substrate 100b3 of the light source module 100.

As described above, in the exemplary embodiment, since the first substrate 100b1 and the second substrate 100b2 of the light source module 100 are in contact with the bottom cover 400, the heat dissipation efficiency of the light source module 100 may be improved.

In addition, in the embodiment, since the third substrate 100b3 of the light source module 100 serves as a panel guide, the panel guide may be omitted, thereby minimizing the size of the bezel area, and also the light unit. Simplify the structure of

31A through 31C are cross-sectional views illustrating the substrate of FIG. 30.

As shown in FIGS. 31A to 31C, the light source module 100 may be disposed on the side surface of the light guide plate 200, but may be disposed at a predetermined interval apart.

The substrate 100b may include a first substrate 100b1, a second substrate 100b2, and a third substrate 100b3.

In this case, the first substrate 100b1 is disposed in the first direction to face the side surface 202 of the light guide plate 200, and the second substrate 100b2 extends from one side of the first substrate 100b1 and the light guide plate 200 is disposed. It may be disposed in a second direction to face a portion of the lower surface of the.

Here, the angle θ51 between the first substrate 100b1 and the second substrate 100b2 may be an acute angle, and the angle θ52 between the first substrate 100b1 and the third substrate 100b3 may be an obtuse angle.

As shown in FIG. 31A, the upper surface 100b1-1 of the first substrate 100b1 may be disposed to be inclined with respect to the side surface 202 of the light guide plate 200, and the upper surface 100b2- of the second substrate 100b2. 1) may be parallel to the bottom surface 204 of the light guide plate 200, and the bottom surface 100b3-2 of the third substrate 100b3 may be parallel to the top surface 206 of the light guide plate 200. have.

In addition, since the first substrate 100b1 is disposed to be inclined with respect to the side surface 202 of the light guide plate 200, even if the light guide plate 200 is expanded in the direction of the first substrate 100b1, the first substrate 100b1 is formed of the light guide plate ( 200, it is possible to maintain a stable structure.

In some cases, as shown in FIG. 31B, the upper surface 100b1-1 of the first substrate 100b1 is inclined with respect to the side surface 202 of the light guide plate 200, and the upper surface 100b2- of the second substrate 100b2. 1) may be disposed to be inclined with respect to the lower surface 204 of the light guide plate 200, and the lower surface 100b3-2 of the third substrate 100b3 is parallel to the upper surface 206 of the light guide plate 200. can do.

As another example, as shown in FIG. 31C, the upper surface 100b1-1 of the first substrate 100b1 is parallel to the side surface 202 of the light guide plate 200, and the upper surface 100b2 of the second substrate 100b2. −1 may be inclined with respect to the bottom surface 204 of the light guide plate 200, and the bottom surface 100b3-2 of the third substrate 100b3 may be parallel to the top surface 206 of the light guide plate 200. Can be.

Here, the angle θ51 between the first substrate 100b1 and the second substrate 100b2 may be an acute angle, and the angle between the first substrate 100b1 and the third substrate 100b3 may be perpendicular.

As such, the angle θ51 between the first substrate 100b1 and the second substrate 100b2 is disposed to be an acute angle, thereby preventing damage to the light source module 100 due to expansion of the light guide plate 200. Light loss and bezel size can be minimized.

32A to 32C are cross-sectional views illustrating a distance between the substrate and the light source of FIG. 30.

32A to 32C, the light source module 100 may be disposed on the side portion of the light guide plate 200, but may be disposed at a predetermined interval apart.

Here, the light source module may include a substrate having an electrode pattern and at least one light source 100a disposed on the substrate.

The substrate may include a first substrate 100b1, a second substrate 100b2, and a third substrate 100b3.

Here, the angle between the first substrate 100b1 and the second substrate 100b2 may be an acute angle, and the angle between the first substrate 100b1 and the third substrate 100b3 may be an obtuse angle.

As shown in FIG. 32A, the light source 100a may be disposed on the first substrate 100b1, and the light source 100a may be disposed between the second substrate 100b2 and the third substrate 100b3.

For example, when the first straight line passing through any point P31 located on one side surface 100a2 of the light source 100a is parallel to the lower surface 100b3-2 of the third substrate 100b3, the first straight line And the lower surface 100b3-2 of the third substrate 100b3 are separated by a distance d51.

When the second straight line passing through one point P32 located on the other side surface 100a2 of the light source 100a is parallel to the upper surface 100b2-1 of the second substrate 100b2, the second straight line and the second straight line are formed. The upper surface 100b2-1 of the two substrates 100b2 is separated by a distance d52.

Here, the distances d51 and d52 may be equal to each other.

In some cases, as in FIG. 32B, the distance d51 may be further than the distance d52.

That is, the light source 100a disposed on the first substrate 100b1 may be disposed closer to the second substrate 100b2 than the third substrate 100b3.

As another case, as shown in FIG. 32C, the distance d51 may be closer than the distance d52.

That is, the light source 100a disposed on the first substrate 100b1 may be disposed farther from the second substrate 100b2 than the third substrate 100b3.

As such, by optimizing the arrangement of the light source 100a to suit the structure of the light unit to be applied, it is possible to minimize the light loss and the size of the bezel area.

33A to 33C are cross-sectional views illustrating the length of the substrate of FIG. 30.

33A to 33C, the light source module 100 may be disposed on the side portion of the light guide plate 200, but may be disposed at a predetermined interval apart.

Here, the light source module may include a substrate having an electrode pattern and at least one light source disposed on the substrate.

As shown in FIG. 33A, the first length L1 of the first substrate 100b1 may be shorter than the second length L2 of the second substrate 100b2 and longer than the third length L3 of the third substrate 100b3.

That is, the second length L2 of the second substrate 100b2 may be the longest, and the third length L3 of the third substrate 100b3 may be the shortest.

As such, when the second length L2 of the second substrate 100b2 is longer than the first length L1 of the first substrate 100b1 and the third length L3 of the third substrate 100b3, the heat radiation efficiency may be increased. When the third length L3 of the third substrate 100b3 is shorter than the first length L1 of the first substrate 100b1 and the second length L2 of the second substrate 100b2, the size of the bezel area may be minimized.

Then, as shown in FIG. 33B, the first length L1 of the first substrate 100b1 may be shorter than the second length L2 of the second substrate 100b2, and may be the same as the third length L3 of the third substrate 100b3. .

That is, the second length L2 of the second substrate 100b2 is the longest, and the first length L1 of the first substrate 100b1 and the third length L3 of the third substrate 100b3 may be the same.

33C, the first length L1 of the first substrate 100b1, the second length L2 of the second substrate 100b2, and the third length L3 of the third substrate 100b3 may be the same.

Thus, by adjusting the 1st length L1 of the 1st board | substrate 100b1, the 2nd length L2 of the 2nd board | substrate 100b2, and the 3rd length L3 of the 3rd board | substrate 100b3 suitably, heat radiation efficiency is improved, The size of the bezel area can be minimized.

34 is a cross-sectional view for describing a light unit according to a third embodiment.

As shown in FIG. 34, the light unit includes a light source module 100, a light guide plate 200, a reflector 300, a bottom cover 400, It may include a top cover 450, a panel guide 500, and an optical member 600.

The first substrate 100b1 may be in contact with the light source 100a.

Here, the side surface of the light guide plate 200 may be an inclined surface.

That is, the angle between the side surface of the light guide plate 200 and the upper surface of the light guide plate 200 may be an obtuse angle, and the angle between the side surface of the light guide plate 200 and the lower surface of the light guide plate 200 may be an acute angle.

Next, the light source 100a of the light source module 100 may include a light emitting surface, and the light emitting surface of the light source 100a may be parallel to the side surface of the light guide plate 200 having the inclined surface.

In addition, the first substrate 100b1 of the light source module 100 is parallel to the side surface of the light guide plate 200, and the second substrate 100b2 of the light source module 100 is inclined with respect to the lower surface of the light guide plate 200. Can be.

As such, the reason for forming the side of the light guide plate 200 to be inclined is that the light emitted from the light source 100a can be transmitted to the light guide plate 200 with almost no loss, and the size of the bezel is minimized. Because it may.

Subsequently, the reflector 300 may be disposed between the light guide plate 200 and the bottom cover 400, and the reflector 200 may be any one of a reflective coating film and a reflective coating material layer.

Here, the reflector 300 and the second substrate 100b2 may be disposed on the bottom plate of the bottom cover 400, and the panel guide 500 may be disposed on the side plate of the bottom cover 400.

Here, the panel guide 500 may be omitted in some cases.

In addition, in an exemplary embodiment, the side surface of the light guide plate 200 and the substrate 100b of the light source module 100 may be inclined, thereby minimizing the size of the bezel and minimizing the loss of light.

35 is a cross-sectional view for describing a light unit according to a fourth embodiment.

As shown in FIG. 35, the light unit includes a light source module 100, a light guide plate 200, a reflector 300, a bottom cover 400, A top cover 450, a heat dissipation member 550, and an optical member 600 may be included.

Subsequently, at least one of the first substrate 100b1 and the second substrate 100b2 may be in contact with the heat dissipation member 550.

The first substrate 100b1 may be in contact with the light source 100a.

As described above, the reason why at least one of the first substrate 100b1 and the second substrate 100b2 contacts the heat dissipation member 550 is that the heat dissipation efficiency of the light source module 100 can be increased.

Here, the heat dissipation member 550 may be disposed between the bottom cover 400 and the substrate 100b, and the heat dissipation member 550 contacts at least one of the first substrate 100b1 and the second substrate 100b2. Can be.

In addition, the heat dissipation member 550 may be in contact with the bottom cover 400 to emit heat generated from the light source 100a to the outside through the bottom cover 400.

For example, the heat dissipation member 550 may include a first heat dissipation plate 550a and a second heat dissipation plate 550b.

Here, the first heat sink 550a may be in contact with the first substrate 100b1, and the second heat sink 550b may be extended from the first heat sink 550a to be in contact with the second substrate 100b2.

In this case, an angle between the first heat sink 550a and the second heat sink 550b may be an acute angle.

At least one of the first heat sink 550a and the second heat sink 550b may be attached to the bottom cover 400.

In addition, the panel guide may support a flat panel 800 such as a display panel, and in some cases, may be omitted.

Here, the flat panel 800 such as the display panel may be supported by the bottom cover 400 instead of the panel guide.

Next, the top cover 450 may be disposed outside the bottom cover 400 to be fastened.

As described above, the embodiment includes a structure in which the heat dissipation member 550 is disposed between the substrate 100b of the light source module 100 and the bottom cover 400, thereby improving heat dissipation efficiency of the light source module 100.

In addition, the embodiment of the present invention not only minimizes the size of the bezel by modifying the structure at an acute angle between the first heat sink 550a and the second heat sink 550b of the heat radiating member 550, but also reduces the size of the bezel. The loss can be minimized.

36 is a view showing a display module having a light unit according to an embodiment.

As shown in FIG. 36, the display module 20 may include a display panel 800 and a light unit 700.

The display panel 800 includes a color filter substrate 810 and a TFT (Thin Film Transistor) substrate 820 bonded to each other to maintain a uniform cell gap, A liquid crystal layer (not shown) may be interposed.

The upper polarizer 830 and the lower polarizer 840 may be disposed on the upper and lower sides of the display panel 800 and more specifically the upper polarizer 830 may be disposed on the upper surface of the color filter substrate 810 And the lower polarizer 840 may be disposed on the lower surface of the TFT substrate 820.

Although not shown, a gate and a data driver for generating a driving signal for driving the panel 800 may be provided on a side of the display panel 800.

37 and 38 illustrate a display device according to an embodiment.

Referring to FIG. 37, the display device 1 includes a display module 20, a front cover 30 surrounding the display module 20, a back cover 35, and a driver 55 provided in the back cover 35. And a driving unit cover 40 surrounding the driving unit 55.

The front cover 30 may include a front panel (not shown) made of a transparent material transmitting light. The front panel may protect the display module 20 at regular intervals, and light emitted from the display module 20 So that an image displayed on the display module 20 is displayed from the outside.

The back cover 35 can be coupled with the front cover 30 to protect the display module 20.

A driving unit 55 may be disposed on one side of the back cover 35.

The driving unit 55 may include a driving control unit 55a, a main board 55b, and a power supply unit 55c.

The driving control unit 55a may be a timing controller and is a driving unit for adjusting the operation timing of each driver IC of the display module 20. The main board 55b may include a V-sync, an H- B resolution signal, and the power supply unit 55c is a driving unit for applying power to the display module 20. [

The driving part 55 may be provided on the back cover 35 and may be surrounded by the driving part cover 40.

The back cover 35 may include a plurality of holes to connect the display module 20 and the driving unit 55 and a stand 60 for supporting the display device 1.

On the other hand, as shown in FIG. 38, the driving control unit 55a of the driving unit 55 may be provided in the back cover 35, and the main board 55b and the power board 55c may be provided in the stand 60. have.

The driving unit cover 40 may cover only the driving unit 55 provided on the back cover 35.

In the embodiment, the main board 55b and the power board 55c are separately formed. However, the present invention is not limited thereto.

In another embodiment, the light source module described in the above embodiments may be implemented as a display device, an indicator device, or a lighting system including the same. For example, the lighting system may include a lamp and a street lamp.

Such a lighting system can be used as an illumination light for collecting light by focusing a plurality of LEDs. In particular, it can be used as an embedded light (down light) to be embedded in a ceiling or a wall of a building so that the opening side of the shade can be exposed. have.

The features, structures, effects and the like described in the embodiments are included in at least one embodiment of the present invention and are not necessarily limited to only one embodiment. Furthermore, the features, structures, effects and the like illustrated in the embodiments can be combined and modified by other persons skilled in the art to which the embodiments belong. Therefore, it should be understood that the present invention is not limited to these combinations and modifications.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of illustration, It can be seen that various modifications and applications are possible. For example, each component specifically shown in the embodiments can be modified and implemented. It is to be understood that all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

100: Light source module 100a: Light source
100b: substrate 100b1: first substrate
100b2: second substrate 100b3: third substrate
200: light guide plate 300: reflector
400: bottom cover 500: panel guide
600: optical member

Claims

A bottom cover;
A light guide plate disposed on the bottom cover; And,
A light source module disposed on one side of the light guide plate;
The light source module includes:
A first substrate disposed in a first direction so as to face a side surface of the light guide plate;
A second substrate extending from the first substrate and disposed in a second direction to face a portion of the lower surface of the light guide plate;
A light source disposed on the first substrate,
And the angle between the first substrate and the second substrate is an acute angle.

The light unit of claim 1, wherein the first substrate is inclined with respect to the side surface of the light guide plate, and the second substrate is inclined with respect to a lower surface of the light guide plate.

The light unit of claim 1, wherein the first substrate is inclined with respect to a side surface of the light guide plate, and the second substrate is parallel to a bottom surface of the light guide plate.

The light unit of claim 1, wherein the first substrate is parallel to a side of the light guide plate, and the second substrate is inclined with respect to a lower surface of the light guide plate.

The method of claim 1, wherein the first substrate,
An upper surface on which the light source is disposed;
And as the upper surface of the first substrate moves away from the second substrate, the distance between the upper surface of the first substrate and the side surface of the light guide plate gradually decreases.

The method of claim 1, wherein the first substrate,
A first region adjacent the second substrate,
A second region adjacent to the first region and in which the light source is disposed;
A third region adjacent to the second region,
The first region and the third region of the first substrate are inclined with respect to the side surface of the light guide plate,
The second unit of the first substrate is a light unit parallel to the side surface of the light guide plate.

The light unit of claim 6, wherein a distance between the first region of the first substrate and the side surface of the light guide plate is further than a distance between the third region of the first substrate and the side surface of the light guide plate.

The light unit of claim 6, wherein the second region of the first substrate has a thickness different from that of the first region and the third region of the first substrate.

The method of claim 1, wherein the second substrate,
An upper surface facing the lower surface of the light guide plate,
The distance between the upper surface of the second substrate and the lower surface of the light guide plate gradually decreases as the upper surface of the second substrate is farther from the first substrate.

The method of claim 1, wherein the second substrate,
A fourth region adjacent the first substrate and facing the light source;
A fifth region adjacent to the fourth region and facing the lower surface of the light guide plate;
The fourth region of the second substrate is inclined with respect to the lower surface of the light guide plate,
And a fifth region of the second substrate is parallel to a lower surface of the light guide plate.

The method of claim 1, wherein the first substrate,
An upper surface facing the light source,
A lower surface facing the bottom cover,
The distance between the bottom surface of the first substrate and the bottom cover gradually increases as the bottom surface of the first substrate is farther from the second substrate.

The light unit of claim 11, wherein a panel guide is disposed between the bottom surface of the first substrate and the bottom cover.

The method of claim 1, wherein the second substrate,
An upper surface facing the light guide plate,
A lower surface facing the bottom cover,
The distance between the bottom surface of the second substrate and the bottom cover is gradually increased as the bottom surface of the second substrate is farther from the first substrate.

The light unit of claim 13, wherein a reflector is disposed between an upper surface of the second substrate and a lower surface of the light guide plate.

The method of claim 1, wherein the second substrate,
A dummy area facing the light guide plate,
A circuit area not facing the light guide plate,
The light unit includes an electrode pattern for driving the light source.

The method of claim 1, wherein a recess is disposed in an edge region of the bottom cover,
And a second substrate disposed in the groove of the bottom cover.

The light unit of claim 16, wherein a bottom surface of the groove of the bottom cover is in contact with the second substrate and is inclined with respect to a surface of the bottom cover.

According to claim 1, wherein the side of the light guide plate is an inclined surface,
The angle between the side of the light guide plate and the top surface of the light guide plate is an obtuse angle,
And the angle between the side of the light guide plate and the bottom surface of the light guide plate is an acute angle.

The light guide plate of claim 1, wherein a groove is disposed at a side surface of the light guide plate.
The light unit is disposed in the groove of the light guide plate.

The method of claim 1, wherein a plurality of light sources are disposed on the first substrate,
A stopper is disposed between the light sources.
And a distance between the stopper and a side surface of the light guide plate is closer than a distance between the light source and side surfaces of the light guide plate.

The method according to claim 1,
An optical member disposed on the light guide plate;
A reflector disposed under the light guide plate;
Further comprising a panel guide disposed on one side of the light guide plate,
The panel guide,
A first segment disposed between the first substrate of the light source module and the bottom cover;
And a second segment that is bent from the end of the first segment in the light guide plate direction.

A bottom cover;
A light guide plate disposed on the bottom cover; And,
A light source module disposed on one side of the light guide plate;
The light source module includes:
A first substrate disposed in a first direction so as to face a side surface of the light guide plate;
A second substrate extending from one side of the first substrate and disposed in a second direction to face a portion of the lower surface of the light guide plate;
A third substrate extending from the other side of the first substrate and disposed in a second direction to face a portion of the upper surface of the light guide plate;
A light source disposed on the first substrate,
The angle between the first substrate and the second substrate is an acute angle,
And the angle between the first substrate and the third substrate is an obtuse angle or a right angle.

The method of claim 22, wherein the light source is disposed between the second substrate and the third substrate,
The light source has a first spacing from the second substrate, a second spacing from the third substrate,
And the first interval and the second interval are different from each other.

The light unit of claim 22, wherein the first substrate and the second substrate of the light source module are in contact with the bottom cover.

The light unit of claim 22, wherein the second substrate is inclined with respect to the lower surface of the light guide plate, and the third substrate is parallel to the upper surface of the light guide plate.

A bottom cover;
A light guide plate disposed on the bottom cover; And,
A light source module disposed on one side of the light guide plate;
The side of the light guide plate is an inclined surface,
The angle between the side of the light guide plate and the top surface of the light guide plate is an obtuse angle, the angle between the side of the light guide plate and the bottom surface of the light guide plate is an acute angle,
The light source module includes:
A first substrate disposed in a first direction so as to face a side surface of the light guide plate;
A second substrate extending from the first substrate and disposed in a second direction to face a portion of the lower surface of the light guide plate;
A light source disposed on the first substrate,
The angle between the first substrate and the second substrate is an acute angle,
And the first substrate is parallel to a side of the light guide plate, and the second substrate is inclined with respect to a bottom surface of the light guide plate.

A bottom cover;
A light guide plate disposed on the bottom cover;
A light source module disposed on one side of the light guide plate; And,
A heat dissipation member disposed between the bottom cover and the light source module,
The light source module includes:
A first substrate disposed in a first direction so as to face a side surface of the light guide plate;
A second substrate extending from the first substrate and disposed in a second direction to face a portion of the lower surface of the light guide plate;
A light source disposed on the first substrate,
The angle between the first substrate and the second substrate is an acute angle,
The heat-
A first heat sink in contact with the first substrate;
A second heat sink extending from the first heat sink and in contact with the second substrate;
The angle between the first heat sink and the second heat sink is acute angle.

28. An illumination system comprising the light unit of any one of claims 1 to 27.