Display device

Abstract

A display device includes: a display panel configured to display an image; a light source module disposed behind a rear surface of the display panel and configured to emit light to the display panel, the light source module including a glass substrate and a light source disposed behind the rear surface of the glass substrate; and a rear frame covering the display panel and the light source module, wherein the light source is disposed between the glass substrate and the rear frame.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on and claims the benefit of priority from Korean Patent Application No. 10-2020-0012586 filed in the Korean Intellectual Property Office on February 3, 2020, the disclosure of which is incorporated herein by reference. Technical Field

[0003] The present disclosure relates to a display device, and more particularly to a display device having an improved light emitting diode (LED) unit. Background Art

[0004] A display device is an output device that visually displays data information such as characters, graphics, and images.

[0005] The display device may include a self-luminous display panel such as an organic light emitting diode (OLED) or a display panel that receives and emits light such as a liquid crystal display (LCD).

[0006] The LCD display device may include a display panel that displays a picture and a backlight unit that provides light to the display panel.

[0007] With the recent trend toward slimming of display devices, a narrower spacing distance is provided between components forming a backlight unit, thereby possibly causing heat generated by a light source to be transferred to the components of the backlight unit, deteriorating reliability of the backlight unit. Summary of the invention

[0008] Provided is a display device capable of efficiently dissipating heat through an improved light source module.

[0009] A display device that is slimmed down by increasing heat dissipation using an improved light source module is also provided.

[0010] According to one aspect of the present disclosure, a display device is provided, including: a display panel configured to display an image; a light source module disposed behind a rear surface of the display panel and configured to emit light to the display panel, the light source module including a glass substrate and a light source disposed behind the rear surface of the glass substrate; and a rear frame covering the display panel and the light source module, wherein the light source is disposed between the glass substrate and the rear frame.

[0011] A rear surface of the light source may contact the rear frame.

[0012] The display device may further include: an intermediate member disposed between the light source and the rear frame and contacting the light source and the rear frame.

[0013] The light source may be configured to emit light from a side coupled to the glass substrate.

[0014] The light source may include: an emission surface through which light is emitted; and a coupler coupled to the glass substrate, and the emission surface and the coupler may be disposed on the same side of the light source.

[0015] The glass substrate may be spaced apart from the rear frame.

[0016] The rear surface of the glass substrate and the rear frame may be spaced apart from each other by a length greater than a length by which a rear end portion of the light source is spaced apart from the rear frame.

[0017] Light emitted by the light source may pass through the glass substrate and be transmitted toward the display panel.

[0018] Light emitted by the light source incident on the glass substrate may be diffused and emitted from the glass substrate.

[0019] The glass substrate may include an opaque material.

[0020] The glass substrate may further include an exit surface disposed opposite to the rear surface, light passing through the exit surface being emitted in a direction toward the display panel, and the exit surface may include a pattern configured to diffuse the light passing through the exit surface.

[0021] The display device may further include: a light conversion member including quantum dot particles, the light conversion member configured to convert a property of light passing through the glass substrate, wherein the light conversion member is disposed between a rear surface of the display panel and the glass substrate.

[0022] The light conversion member may be disposed on the glass substrate.

[0023] The light source may include: a light emitting diode (LED) chip configured to emit light; and a housing configured to cover the LED chip, wherein a thermal conductivity of the housing is greater than a thermal conductivity of the glass substrate.

[0024] The light source may have a front portion contacting a rear surface of the glass substrate and a rear portion contacting a front surface of the rear frame.

[0025] A side of the glass substrate opposite to the rear surface of the display panel may be coupled to the light source.

[0026] The glass substrate may include a long side extending in a second direction perpendicular to the first direction, wherein the light source emits light in the first direction to pass through the glass substrate and toward a rear surface of the display panel.

[0027] The light source may be configured to emit light in a first direction to pass through the glass substrate and toward a rear surface of the display panel.

[0028] Light emitted from the light source may be diffused in the first direction from the light source module.

[0029] The glass substrate may include a plurality of substrates spaced apart from each other in a third direction perpendicular to the first direction and the second direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and other aspects, features and advantages of certain embodiments of the present disclosure will become clear and more easily understood from the following description in conjunction with the accompanying drawings, in which:

[0031] Figure 1 is a perspective view showing a display device according to an embodiment;

[0032] Figure 2 is an exploded perspective view showing a display device according to an embodiment;

[0033] Figure 3 is a cross-sectional view showing some components of a display device according to an embodiment;

[0034] Figure 4 It is shown Figure 3 A magnified view of the components in FIG.

[0035] Figure 5 is a cross-sectional view showing some components of a display device according to another embodiment;

[0036] Figure 6 is a cross-sectional view showing some components of a display device according to another embodiment; and

[0037] Figure 7 is a cross-sectional view showing some components of a display device according to another embodiment. DETAILED DESCRIPTION

[0038] The embodiments described herein and shown in the accompanying drawings are examples, and it should be understood that they can be replaced by various equivalents and modifications. With regard to the description of the drawings, similar reference numerals may be used to indicate similar or related elements.

[0039] The terms used herein are used only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. It will be understood that the singular forms "a", "an", and "the" include plural references unless the context clearly indicates otherwise. It will also be understood that the terms "comprises", "includes", and / or "having" when used in this specification specify the presence of the claimed features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or combinations thereof.

[0040] Terms including ordinals like "first" and "second" may be used to describe various components, but these components are not limited by these terms. These terms are only used for the purpose of distinguishing one component from another component. Therefore, without departing from the teachings of the present disclosure, the first element, component, region, layer or part discussed below may be referred to as a second element, component, region, layer or part.

[0041] The terms “front,” “rear,” “upper,” “lower,” “top,” and “bottom” as used herein are defined with respect to the drawings, but these terms may not limit the shapes and positions of corresponding components.

[0042] A display device generally refers to a device that displays an image. A display device may include a television, a monitor, a mobile device, etc. In the following, a television is described as an example of a display device. A television may include a flat-screen TV, a curved TV, a bendable TV, etc. The following description will be mainly focused on a flat-screen TV as an example of a television.

[0043] Figure 1 is a perspective view showing a display device according to an embodiment, Figure 2 is an exploded perspective view showing a display device according to an embodiment, and Figure 3 is a cross-sectional view showing some components of a display device according to an embodiment.

[0044] refer to Figures 1 to 3 The display device 1 may include a display panel 20 and a frame assembly that accommodates and supports a backlight unit.

[0045] The display panel 20 may include a liquid crystal display panel formed by sealing liquid crystal molecules between two glass substrates having respective electrodes and may display an image in a front direction.

[0046] The display panel 20 may display an image in a first direction A (ie, a front direction).

[0047] The frame assembly may include a front frame 40 , a middle frame 50 , and a rear frame 60 .

[0048] The front frame 40 may include an opening 40a for exposing the display panel 20. The front frame 40 may include a bezel portion 41 covering the front peripheral side of the display panel 20 and a top side portion 42 bent backward from an end of the bezel portion 41 to cover the side surface of the middle mold 50.

[0049] The front frame 40 may be coupled to the front side of the middle mold 50 to maintain a state in which the display panel 20 is mounted on the middle mold 50 .

[0050] The display panel 20 and the front frame 40 are sequentially disposed in front of the middle mold 50 , and the rear frame 60 may be disposed behind the middle mold 50 to allow the display panel 20 and the rear frame 60 to remain spaced apart from each other while supporting respective components.

[0051] The rear frame 60 may include a rear surface portion 61 and a bottom side surface portion 62 extending forward from the periphery of the rear surface portion 61 to be coupled to the middle mold 50 .

[0052] The rear frame 60 may be provided in a high-strength polygonal flat plate shape, and may include a metal material (eg, aluminum or aluminum alloy, etc.) having small thermal deformation to heat generated by the light source module 100 and / or the display panel 20 accommodated therein.

[0053] The rear frame 60 may include a material having high thermal conductivity. Therefore, heat generated by the light source module 100 may be easily dissipated, thereby improving the reliability of the display device 1.

[0054] The rear frame 60 may be formed of a plastic material (eg, polycarbonate: PC) or by adding glass fiber to the plastic material.

[0055] However, with Figure 1 , Figure 2 and Figure 3 Depending on the embodiment, at least one of the front frame 40 and the middle mold 50 may be omitted, or may be integrally formed with each other.

[0056] The display device 1 may further include a case surrounding the frame assembly to protect and accommodate the frame assembly, or a rear cover covering the rear side of the rear frame 60 .

[0057] Inside the housing may be disposed: a power board for supplying power to the display device 1 ; a signal processing board for processing various image signals and sound signals; and a timing control board for transmitting image signals to the display panel 20 .

[0058] The display device 1 may further include a backlight unit configured to provide light to the display panel 20 .

[0059] The light source module 100 may include a light source 110 that emits light.

[0060] The backlight unit may be a direct type backlight unit, in which the light source 110 is positioned behind the display panel 20, such as Figure 1 , Figure 2 and Figure 3 The backlight unit may include: a light source module 100 including a light source 110 and a substrate 120 on which the light source 110 is mounted; and various optical sheets 30 arranged on an optical moving path of light emitted by the light source module 100.

[0061] The light source 110 may be provided as an LED package accommodating a light emitting diode (LED) emitting light. The light source module 100 may be provided to provide light to the display panel 20. The light source module 100 may provide light to the display panel 20 from the rear side of the display panel 20. The light source module 100 may be arranged at a side in a direction opposite to the first direction A with respect to the display panel 20, that is, at the rear side of the display panel 20.

[0062] The light source of the light source module 100 may be provided as a micro LED formed of an LED chip having a size of 100 μm to 300 μm.

[0063] Alternatively, a cold cathode fluorescent lamp (CCFL) or an external electrode fluorescent lamp (EEFL) may be used as the light source.

[0064] The substrate 120 may have a bar shape extending in the second direction B perpendicular to the first direction A (in other words, extending in the left-right direction). That is, the substrate 120 may have a length portion extending in the left-right direction or in the second direction B.

[0065] The substrate 120 may include a glass material. However, the embodiment is not limited thereto, and the substrate 120 may include a material having other physical properties.

[0066] The display device may include a plurality of substrates 120 , which may be spaced apart from each other in a third direction C perpendicular to the first direction A and the second direction B.

[0067] Because the plurality of substrates 120 may have the same configuration, the following description is focused on one substrate 120 among the plurality of substrates 120 .

[0068] The substrate 120 may be coupled to the rear frame 60. The substrate 120 may be coupled to the rear frame 60 so that the light source 110 emits light toward the display panel 20.

[0069] The substrate 120 may be provided with a plurality of light sources 110 mounted thereon and spaced apart from each other at predetermined intervals along the second direction B. Since the plurality of light sources 110 have the same configuration, one of the plurality of light sources 110 will be described below.

[0070] The substrate 120 may have a circuit pattern configured to transmit driving power and signals to the light source 110 .

[0071] Unlike in the edge type display device, light emitted by the light source module 100 may be directly provided to the display panel 20. In this case, the optical sheet 30 may be disposed between the light source module 100 and the display panel 20 to improve characteristics of the light emitted by the light source module 100.

[0072] The optical sheet 30 may include a prism sheet and a protective sheet.

[0073] The prism sheet may include a prism pattern in a triangular prism shape, and the prism patterns may be arranged adjacent to each other while forming a plurality of band shapes. The prism pattern may be formed in a row pattern in which convex portions and concave portions are repeated while protruding toward the display panel. Light diffused by the light source module 100 may be refracted while passing through the prism pattern, so that the light may be introduced into the display panel in a vertical direction.

[0074] The protective sheet is configured to protect the various components from external influences or from contamination by foreign substances. Specifically, the protective sheet can protect the prism sheet, which is easily scratched, from being scratched.

[0075] The display device 1 may include a light conversion member 70 configured to change the wavelength of light emitted by the light source module 100 .

[0076] The light conversion member 70 may be disposed between the display panel 20 and the light source module 100. When light emitted by the light source module 100 passes through the light conversion member 70, a wavelength of the transmitted light is changed, and the changed light may be introduced into the display panel 20.

[0077] The light source module 100 may emit blue-based light. In this case, the blue-based light may be referred to as light partially biased toward green. The blue light generated by the light source module 100 may be converted into white light by the light conversion member 70.

[0078] The light conversion member 70 may include quantum dots (QD).

[0079] The light conversion member 70 may convert the color of light emitted by the light source module 100 and incident on the light conversion member 70, and may emit light of different colors. For example, the light conversion member 70 may convert blue light emitted from the light source module 100 and incident on the light conversion member 70 into red light and green light (or yellow light) through various quantum dots, and then emit the color-converted light to the outside. Specifically, the light conversion member 70 may emit light of a different color from the color of the incident light by changing the wavelength of the incident light (wavelength shift).

[0080] When voltage is applied to the quantum dots, the quantum dots can emit light by emitting light themselves or by absorbing light, thereby emitting light of a specific wavelength.

[0081] In a stable state, the electrons of quantum dots are located at a low energy level (or low energy band). In this case, when the quantum dots absorb light from the outside, the electrons at the low energy level move to a high energy level (or high energy band). Because electrons at high energy levels are unstable, the electrons naturally move from high energy levels to low energy levels. Therefore, while moving from high energy levels to low energy levels, the electrons emit light corresponding to the energy difference between the high energy level and the low energy level. In this case, the wavelength of the emitted light is determined by the energy difference between the high energy level and the low energy level.

[0082] Specifically, the smaller the size of a quantum dot, the shorter the wavelength of light it can emit, and the larger the size, the longer the wavelength of light it can emit. For example, a quantum dot with a diameter of 2 nanometers (nm) can emit blue light, and a quantum dot with a diameter of about 10nm can emit red light.

[0083] In addition, when quantum dots of different sizes are used, the quantum dots can output light of various wavelengths from red light to blue light. In other words, when quantum dots of different sizes are used, light with natural colors can be generated.

[0084] The light conversion member 70 may be manufactured by dispersing the above-described quantum dots in a resin. When light is incident from the light source module 100 to the light conversion member 70, the incident light excites electrons of the quantum dots included in the light conversion member 70. In other words, electrons at a low energy level (or low energy band) are moved to a high energy level (or high energy band) by the incident light.

[0085] Thereafter, as the excited electrons move from a high energy level to a low energy level, the quantum dots output light of various wavelengths according to the size. Therefore, light of various wavelengths can pass through the display panel 20 to generate an image.

[0086] Therefore, when blue light emitted by the light source module 100 is introduced into the light conversion member 70 , green-based light and red-based light may be emitted by the green light quantum dots and the red light quantum dots.

[0087] Finally, due to the blue light emitted by the light source module 100 and the green light and the red light emitted by the light conversion member 70 , white light in which three different wavelengths of light are mixed may be introduced into the display panel 20 .

[0088] Unlike conventional display devices, recent display devices are developed into ultra-slim display devices having a thin thickness in a first direction A. In this case, as the thickness of the display device is reduced, a spacing distance between components inside the display device may be reduced.

[0089] In a display device of the related art, a backlight unit may include a diffusion sheet that diffuses light emitted by a light source module in all directions to transmit a uniform amount of light to a display panel in all directions.

[0090] As display devices become slimmer, a spacing distance between a light source module and a diffusion sheet becomes narrower, and thus the amount of light emitted to the diffusion sheet may be reduced due to an emission angle of the light.

[0091] In addition, because the spacing distance between the light source module and the light conversion member including the quantum dots is narrowed, the high-temperature heat generated by the light source is easily transferred to the light conversion member, and thus the characteristics of the quantum dots of the light conversion member are changed, resulting in poor performance. Specifically, because the inorganic material surrounding the quantum dots is separated due to the high-temperature heat, the light emission area of ​​the quantum dots is reduced, resulting in a decrease in light emission efficiency, and the overall performance may be deteriorated.

[0092] Specifically, since the substrate of the light source module is formed of a material having low thermal conductivity (eg, a glass material), high-temperature heat generated by the light source module cannot be efficiently dissipated. As a result, the reliability of the display device may be reduced.

[0093] In the display device of the related art, a rear frame with excellent thermal conductivity is coupled to the light source module for heat dissipation of the light source module, but heat generated from the LED package may not be easily transferred to the rear frame through the substrate with low thermal conductivity, making it difficult to dissipate heat.

[0094] In order to eliminate such limitations, the light source module 100 according to the embodiment may transmit a uniform amount of light toward the display panel 20 and achieve efficient heat dissipation through the rear frame 60 even when the interval distance between components is narrow.

[0095] Hereinafter, the light source module 100 according to the embodiment will be described in detail.

[0096] Figure 3 is a cross-sectional view showing some components of a display device according to an embodiment, and Figure 4 It is shown Figure 3 Magnified view of the components in .

[0097] refer to Figure 3 and Figure 4 The light source module 100 may include: a substrate 120 arranged to face the display panel 20 in a first direction A (ie, a forward direction); and a light source 110 mounted on a mounting surface 121 of the substrate 120, the mounting surface 121 facing a direction opposite to the first direction A (ie, a backward direction).

[0098] The mounting surface 121 may form a rear surface of the substrate 120 in the front-rear direction.

[0099] As described above, the substrate 120 may be formed of a glass material and may include an exit surface 122 facing the display panel 20 in the first direction A and through which light emitted by the light source 110 exits. The light emitted by the light source 110 may be transmitted to the display panel 20.

[0100] The exit surface 122 may form a front surface of the substrate 120 in the front-rear direction.

[0101] The light source module 100 may be configured such that the substrate 120 and the light source 110 are sequentially arranged in a direction opposite to the first direction A. Therefore, the display panel 20 , the substrate 120 , the light source 110 and the rear frame 60 may be sequentially arranged in a direction opposite to the first direction A inside the display device 1 .

[0102] The light source 110 may include an LED chip 111 that generates light. The light source 110 may include an emission surface 114 through which the light generated by the LED chip 111 is emitted.

[0103] The emission surface 114 may face the first direction A. The emission surface 114 may face the substrate 120 .

[0104] The light source 110 may include a housing 112 covering the LED chip 111 and having an emission surface 114 .

[0105] The light source 110 may be in direct contact with the rear frame 60. A surface of the light source 110 in a direction opposite to the first direction A may be in contact with the rear frame 60.

[0106] The light source 110 may include a contact surface 113 disposed opposite to the emission surface 114 , and the contact surface 113 may directly contact the rear frame 60 .

[0107] Here, the expression “direct contact” may include two cases: the contact surface 113 contacts the rear frame 60 without any member in between; and the contact surface 113 contacts the rear frame 60 through a contact member.

[0108] The housing 112 may be formed of a material having better thermal conductivity than the substrate 120 .

[0109] High temperature heat generated when the LED chip 111 emits light can be directly transferred to the rear frame 60 along the housing 112. Therefore, compared with when the heat generated by the light source 110 is transferred to the rear frame 60 through the substrate 120, the heat generated by the light source 110 can be dissipated more efficiently.

[0110] In the related display, components of the light source module are arranged in the order of the light source, the substrate, and the rear frame in a direction opposite to the first direction A. Therefore, heat generated by the light source is transferred to the rear frame through the substrate.

[0111] In this case, as described above, when the substrate is formed of a material having low thermal conductivity, high temperature heat generated by the light source is not transferred to the rear frame through the substrate but is transferred to another component disposed adjacent to the light source.

[0112] In other words, because the heat generated by the light source is shielded by the substrate, the heat is not transferred to the frame disposed behind the light source, but is transferred to the front of the light source, causing thermal discoloration of the light conversion member, or expansion of the diffusion sheet, thereby resulting in lower reliability of the display device.

[0113] However, the light source module 100 according to the embodiment is configured such that the light source 110 is in direct contact with the rear frame 60 so that heat generated by the light source 110 is directly transferred to the rear frame 60 , thereby making it possible to improve heat dissipation efficiency.

[0114] That is, the surface of the substrate on which the light source 110 is mounted may be opposite to the direction in which the light source 110 emits light. The side of the substrate 120 on which the light source 110 is mounted may be opposite to the direction in which the light source 110 emits light (ie, the first direction A toward the display panel 20).

[0115] The light source 110 may include a coupler 115 coupled to the substrate 120. The coupler 115 may be provided to allow a lead of the light source 110 to contact a printed circuit of the substrate 120. The coupler 115 may be formed as a lead frame of the light source 110.

[0116] The coupler 115 and the emission surface 114 of the light source 110 may be disposed on the same side of the housing 112. The coupler 115 and the emission surface 114 of the light source 110 may be disposed at one end of the housing 112 in the first direction A.

[0117] Thus, the light source 110 may emit light in the first direction A while being mounted on the mounting surface 111 of the substrate 120 facing in a direction opposite to the first direction A. As shown in FIG.

[0118] That is, the light source module 100 may be disposed such that light emitted by the light source 110 is transmitted through the substrate 120 in the first direction A and is directed to the display panel 20 .

[0119] In addition, the substrate 120 may be disposed on the display device 1 such that the light source 110 is closer to the rear frame 60 than the substrate 120 , specifically, such that the light source 110 is in direct contact with the rear frame 60 .

[0120] Therefore, the substrate 120 may be spaced apart from the rear frame 60. In a direction opposite to the first direction A, a distance between the substrate 120 and the rear frame 60 may be longer than a distance between the light source 110 and the rear frame 60.

[0121] As described above, the substrate 120 may be formed of a glass material, and light may be transmitted through the substrate 120. However, the substrate 120 may include an opaque material so that transparency is reduced.

[0122] The light transmitted through the substrate 120 may be emitted through the exit surface 122 while being diffused by the opaque material of the substrate 120 .

[0123] When light emitted by the light source module 100 directly enters the eyes of a viewer, the arrangement pattern of the plurality of light sources 110 may be perceived by the eyes. The substrate 120 may diffuse the transmitted light to offset or minimize such an effect.

[0124] The exit surface 122 of the substrate 120 may include a pattern structure for further diffusing the light transmitted through the exit surface 122. Since the light passing through the exit surface 122 is subjected to additional diffuse reflection caused by the patterning, the light may be uniformly emitted in all directions.

[0125] Therefore, the substrate 120 may diffuse light passing through the substrate 120 , thereby serving as a diffusion sheet.

[0126] Therefore, according to the embodiment, the light emitted by the light source 110 may be introduced to the display panel 20 with diffuse reflection using the substrate 120 without including the diffusion sheet.

[0127] Since the diffusion sheet is not included, the influence of expansion of the diffusion sheet caused by heat generated by the light source module 100 is avoided, and the display device 1 can be slimmer in the first direction A because there is no diffusion sheet.

[0128] The emission surface 114 of the light source 110 may be in contact with the substrate 120 or at a fine interval from the substrate 120. Therefore, most of the light emitted by the light source 110 may be transmitted through the substrate 120 without being reflected from the incident surface (or mounting surface 121) of the substrate 120, so that light efficiency may be improved.

[0129] That is, because the light source 110 emits light toward the substrate 120 which is spaced a small distance apart, and the emitted light is transmitted through the substrate 120 at a small incident angle on the incident surface of the substrate 120, most of the emitted light can be transmitted into the substrate 120 without being reflected from the incident surface of the substrate 120.

[0130] Therefore, the display device 1 may not include a reflective sheet provided in a related display device.

[0131] The reflective sheet of the related display device is arranged to reflect light reflected from an incident surface of the diffuser sheet back to the diffuser sheet when light emitted by the light source module is incident on the diffuser sheet at a large incident angle.

[0132] However, as described above, in the display device 1 according to the embodiment, since most of the light emitted by the light source 110 is not reflected but transmitted through the substrate 120 , the need for a reflective sheet can be reduced.

[0133] The light conversion member 70 may be disposed on the exit surface 122 of the substrate 120. That is, the light conversion member 70 may be disposed on the first direction A side of the substrate 120. The light conversion member 70 may be disposed adjacent to the light source module 100. As described above, since the thermal conductivity of the substrate 120 is low, the heat dissipated through the rear frame 60 is greater than the heat conducted through the substrate 120, so that even when the light conversion member 70 is disposed on the light source module 100, thermal discoloration may be avoided.

[0134] Since the light conversion member 70 is disposed on the exit surface 122 of the substrate 120 , light emitted from the exit surface 122 may directly pass through the light conversion member 70 , so that light efficiency of the display device 1 may be improved.

[0135] Hereinafter, a display device 1 according to another embodiment will be described. Except for an intermediate member 80 of the display device 1 described below, other components are the same as those of the display device 1 according to the above embodiment, and thus redundant description will be omitted.

[0136] Figure 5 is a cross-sectional view showing some components of a display device according to another embodiment.

[0137] Figure 5 The display device 1 may include an intermediate member 80 disposed between the light source 110 and the rear frame 60 .

[0138] The intermediate member 80 may be formed of a contactable material that brings the light source 110 into contact with the rear frame 60 .

[0139] The intermediate member 80 may be formed of an elastic material. Therefore, the intermediate member 80 may be configured to absorb an external force that may be generated in the display device 1 and transmitted to the light source 110.

[0140] The intermediate member 80 may be provided to have a thermal conductivity higher than that of the substrate 120 .

[0141] Therefore, heat generated by the light source 110 may be conducted to the rear frame 60 through the intermediate member 80 rather than through the substrate 120 .

[0142] Hereinafter, a display device 1 according to another embodiment will be described. Except for an intermediate member 90 of the display device 1 described below, other components are the same as those of the display device 1 according to the above embodiment, and thus redundant description will be omitted.

[0143] Figure 6 is a cross-sectional view showing some components of a display device according to an embodiment.

[0144] The display device 1 according to the embodiment may include an intermediate member 90 disposed between the light source 110 and the rear frame 60 .

[0145] The intermediate member 90 may function as a heat sink.

[0146] The intermediate member 90 may efficiently transfer heat generated by the light source module 100 to the rear frame 60 to dissipate high-temperature heat generated by the light source module 100 to the outside.

[0147] In the following, Figure 7 As shown, a display device 1 according to another embodiment will be described. Except for a light conversion member 70 of the display device 1 described below, other components are the same as those of the display device 1 according to the above embodiment, and thus redundant description will be omitted.

[0148] The light conversion member 70 may be spaced apart from the light source module 100 in the first direction A. The light conversion member 70 may be disposed to be in contact with the optical sheet 30 . The light conversion member 70 may be supported by the middle mold 50 together with the optical sheet 30 .

[0149] However, the embodiment is not limited thereto, and the light conversion member 70 may be disposed to be spaced apart from the optical sheet 30 , and may be supported by the middle mold 50 independently of the optical sheet 30 .

[0150] As described above, according to the embodiment, the substrate of the light source module can be formed of a glass material, and the LED package can be arranged under the substrate relative to the emission direction of the LED so that the LED package can easily contact the rear frame, thereby allowing the heat generated by the LED package to be efficiently dissipated through the rear frame.

[0151] According to an embodiment, a substrate of a light source module may be formed of a glass material, and light emitted from an LED may be transmitted through the glass material and directed to a display panel, wherein the light transmitted through the substrate is diffused such that a display device does not require a separate diffusion sheet.

[0152] According to the embodiment, the spacing distance between the light source module and the display panel can be reduced, thereby making the display device slimmer.

[0153] Although several embodiments have been shown and described, the above example embodiments are provided for illustrative purposes only, and those skilled in the art will recognize that changes and modifications may be made in these example embodiments without departing from the principles and scope of the present disclosure, which is defined by the claims and their equivalents.

Claims

1. A display device, comprising: a display panel configured to display an image; a light source module disposed behind the rear surface of the display panel and configured to emit light to the display panel, the light source module comprising a glass substrate and a plurality of light sources disposed behind the rear surface of the glass substrate; as well as a rear frame, covering the display panel and the light source module, Wherein, each of the plurality of light sources comprises: a light emitting diode (LED) chip configured to generate light; and a housing that completely surrounds the rear surface and side surfaces of the LED chip and has an emission surface, wherein light is emitted toward the display panel through the emission surface; The front surface of the housing is in the same plane as the front surface of the LED chip, there is an empty space between the front surface of the housing and the glass substrate, and the rear surface of the housing is in direct contact with the front surface of the rear frame without any components therebetween.

2. The display device according to claim 1, wherein: The light source is configured to emit light from a side coupled to the glass substrate.

3. The display device according to claim 2, wherein: The light source includes: a coupler coupled to the glass substrate, and Wherein, the emitting surface and the coupler are arranged on the same side of the light source.

4. The display device according to claim 1, wherein: The glass substrate is spaced apart from the rear frame.

5. The display device according to claim 4, wherein: The rear surface of the glass substrate and the rear frame are spaced apart from each other by a certain length, and the certain length is greater than a length spaced apart between a rear end portion of the light source and the rear frame.

6. The display device according to claim 1, wherein: Light emitted by the light source passes through the glass substrate and is transmitted toward the display panel.

7. The display device according to claim 5, wherein: Light emitted by the light source incident on the glass substrate is diffused and emitted from the glass substrate.

8. The display device according to claim 7, wherein: The glass substrate includes an opaque material.

9. The display device according to claim 7, wherein: The glass substrate further includes an exit surface arranged opposite to the rear surface of the glass substrate, and light passing through the exit surface is emitted in a direction toward the display panel, and The exit surface includes a pattern configured to diffuse light passing through the exit surface.

10. The display device according to claim 1, further comprising: a light conversion member including quantum dot particles, the light conversion member being configured to convert a property of light passing through the glass substrate, Wherein, the light conversion member is disposed between the rear surface of the display panel and the glass substrate.

11. The display device according to claim 10, wherein: The light conversion member is disposed on the glass substrate.

12. The display device according to claim 1, wherein: The thermal conductivity of the housing is greater than the thermal conductivity of the glass substrate.

Images