Display device

Abstract

A display device is provided. The display device includes a first heat dissipation member disposed on a display panel, and an air generator disposed on the first heat dissipation member, wherein the air generator includes a blower fan, and an air flow path disposed on one side of the blower fan and extending in a first direction. The blower fan includes a main body defining an internal space of the blower fan, a first diaphragm and a second diaphragm disposed in the internal space of the main body and facing each other, a first magnet disposed on a surface of the first diaphragm, a second magnet disposed on a surface of the second diaphragm, and an exhaust hole of the main body disposed between the first diaphragm and the second diaphragm, the exhaust hole being open toward the air flow path, and at least one of the first magnet and the second magnet is an electromagnet.

Description

[0001] Cross-references to related applications

[0002] This application claims priority and benefit to Korean Patent Application No. 10-2020-0071437, filed with the Korean Intellectual Property Office on June 12, 2020, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to display devices. Background Technology

[0004] With the development of multimedia, the importance of display devices has increased. Accordingly, various types of display devices have been used, such as organic light-emitting diode (OLED) displays and liquid crystal displays (LCD).

[0005] In a display device, a self-emissive display device may include a self-emissive element, such as an organic light-emitting element. The self-emissive element may include two electrodes facing each other and a light-emitting layer between them. When the self-emissive element is an organic light-emitting element, electrons and holes supplied from the two electrodes can recombine in the light-emitting layer to generate excitons, and the excitons can transition from an excited state to a ground state to emit light.

[0006] Light sources generate a significant amount of heat along with the light. Specifically, generating light with high brightness can potentially generate even more heat. Consequently, it may be necessary to effectively dissipate this heat in order for the display device to function properly.

[0007] It will be understood that this background in the technical section is intended to provide, in part, a useful context for understanding the present invention. However, this background in the technical section may also include ideas, concepts, or knowledge that were known or understood by a person skilled in the art prior to the corresponding valid application date, and that are not part of the subject matter disclosed herein. Summary of the Invention

[0008] One aspect of this disclosure is to provide a display device with improved heat dissipation characteristics.

[0009] However, the aspects are not limited to those set forth herein. These and other aspects will become more apparent to those skilled in the art to which this disclosure pertains from the following detailed description.

[0010] An embodiment of the display device may include: a first heat dissipation member disposed on the lower surface of the display panel; and an air generator disposed on the lower surface of the first heat dissipation member. The air generator may include: a blower; and an airflow path disposed on one side of the blower and extending in a first direction. The blower may include: a body defining an internal space of the blower; a first diaphragm and a second diaphragm disposed within the internal space of the body, the first diaphragm and the second diaphragm facing each other; a first magnet disposed on the surface of the first diaphragm; a second magnet disposed on the surface of the second diaphragm; and an exhaust port of the body disposed between the first diaphragm and the second diaphragm, the exhaust port facing the opening of the airflow path. At least one of the first magnet and the second magnet may be an electromagnet.

[0011] Multiple blowers can be configured, and the multiple blowers can be arranged in a second direction intersecting the first direction.

[0012] The surfaces of the first magnet and the second magnet can face each other.

[0013] The first magnet can be a permanent magnet, and the second magnet can be an electromagnet.

[0014] Alternating current can be applied to the second magnet.

[0015] The attractive and repulsive forces can be changed periodically and applied between the first and second magnets.

[0016] The display device may further include a second heat dissipation component disposed on the lower surface of the first heat dissipation component.

[0017] The surface of the second heat dissipation component may include nanopatterns.

[0018] The second heat dissipation component may have a higher thermal conductivity than the first heat dissipation component.

[0019] The first heat dissipation component may include a protrusion that protrudes toward the opposite side of the display panel, has a shape that extends in a first direction and is arranged in a second direction that intersects the first direction.

[0020] The display device may also include a lower rack that provides space for accommodating the display panel, the first heat dissipation component, and the blower.

[0021] The lower frame may include a protrusion that protrudes toward the display panel, has a shape that extends in a first direction and is arranged in a second direction that intersects the first direction.

[0022] The body may include an internal flow path, and the internal flow path can provide a passage for supplying air to the blower from the outside of the blower.

[0023] The vent may include: a first hole having a first width; and a second hole disposed on one side of the first hole in a first direction, and having a second width less than the first width.

[0024] Embodiments of the display device may include: a heat dissipation member disposed on the lower surface of the display panel; and an air generator disposed on the lower surface of the heat dissipation member. The air generator may include: a blower; and an airflow path disposed on one side of the blower and extending in a first direction. The blower may include: a first magnet and a second magnet facing each other; a controller for controlling the attractive and repulsive forces of the first and second magnets; and an exhaust port connecting the space between the first and second magnets to the airflow path.

[0025] The surfaces of the first magnet and the second magnet can be configured to face each other.

[0026] The first magnet can be a permanent magnet, and the second magnet can be an electromagnet.

[0027] Alternating current can be applied to the second magnet.

[0028] The heat dissipation component may include a protrusion that protrudes toward the opposite side of the display panel, has a shape that extends in a first direction and is arranged in a second direction that intersects the first direction.

[0029] The display device may also include a lower frame that provides space for accommodating the display panel, heat dissipation components, and a blower. The lower frame may include a protrusion that projects toward the display panel, has a shape extending in a first direction, and is arranged in a second direction intersecting the first direction. Attached Figure Description

[0030] The above and other aspects and features of the present invention will become more apparent from the detailed description of exemplary embodiments of the invention with reference to the accompanying drawings, in which:

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

[0032] Figure 2 yes Figure 1 An exploded schematic perspective view of the display device;

[0033] Figure 3 This is a schematic plan view of the display panel according to the embodiment;

[0034] Figure 4 yes Figure 3 A schematic cross-sectional view of a portion of the display panel;

[0035] Figure 5 This is a schematic view of a display device according to an embodiment;

[0036] Figure 6 It is along Figure 3 A schematic cross-sectional view of the display panel taken by line VI-VI';

[0037] Figure 7 It is along Figure 3 A schematic cross-sectional view of the display panel taken by line VII-VII';

[0038] Figure 8 This is a schematic cross-sectional view of the blower according to the embodiment;

[0039] Figure 9 yes Figure 8 A schematic variation of a blower;

[0040] Figure 10 This is a schematic view showing a coil according to an embodiment;

[0041] Figure 11 This is a schematic cross-sectional view of a display device according to another embodiment;

[0042] Figure 12 This is a schematic cross-sectional view of a display device according to another embodiment; and

[0043] Figure 13 This is a schematic cross-sectional view of a display device according to another embodiment. Detailed Implementation

[0044] The invention will now be described more fully below with reference to the accompanying drawings, which illustrate embodiments of the invention. However, the invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of this disclosure to those skilled in the art.

[0045] As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms, including “at least one”, unless the context otherwise clearly indicates otherwise.

[0046] For purposes of meaning and interpretation, the term “and / or” is intended to include any combination of the terms “and” and “or”. For example, “A and / or B” can be understood to mean “A, B, or A and B”. The terms “and” and “or” can be used in both combined and separate senses and can be understood as equivalent to “and / or”.

[0047] It will also be understood that when a layer is referred to as being "on" another layer or substrate, it can be directly on that other layer or substrate, or there may be an intermediate layer. Conversely, when an element is referred to as being "directly" on another element, there may be no intermediate element.

[0048] For ease of description, spatial relative terms, such as “below,” “under,” “lower,” “above,” “upper,” etc., may be used herein to describe the relationship between one element or feature as shown in the figures and another element(s) or feature(s). It will be understood that spatial relative terms are intended to include different orientations of the device in use or operation other than those depicted in the figures. For example, if the device in the figures is flipped, an element described as “below” or “under” other elements or features would be oriented “above” other elements or features. Therefore, the term “below” can include both upper and lower orientations. The device may be oriented in other ways (rotated 90 degrees or oriented in other orientations), and the spatial relative descriptive terms used herein shall be interpreted accordingly.

[0049] Throughout the specification, the same reference numerals indicate the same components.

[0050] The term “overlap” may include layering, stacking, facing or oriented, extending over, covering or partially covering, or any other suitable term that will be understood and appreciated by one of ordinary skill in the art.

[0051] For the purposes of its meaning and interpretation, the phrase “at least one of…” is intended to include the meaning of “at least one selected from the group of…”. For example, “at least one of A and B” can be understood to mean “A, B, or A and B”.

[0052] Unless otherwise specified or implied, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. It will also be understood that terms, such as those defined in common dictionaries, shall be interpreted as having a meaning consistent with their meaning in the context of the relevant field, and shall not be interpreted in an ideal or overly rigid sense unless clearly defined in the specification.

[0053] Figure 1 This is a schematic perspective view of a display device according to an embodiment. Figure 2 yes Figure 1 An exploded schematic perspective view of the display device. Figure 3 This is a schematic plan view of the display panel according to the embodiment. Figure 4 yes Figure 3 A schematic cross-sectional view of a portion of the display panel. Figure 5This is a schematic view of a display device according to an embodiment. Figure 6 It is along Figure 3 A schematic cross-sectional view of the display panel taken by line VI-VI'. Figure 7 It is along Figure 3 A schematic cross-sectional view of the display panel taken by line VII-VII'.

[0054] Reference Figures 1 to 7 Display device 1 can refer to any electronic device that provides a display screen. Examples of display device 1 may include televisions, laptop computers, monitors, billboards, mobile phones, smartphones, tablet PCs, smartwatches, watch phones, mobile communication terminals, electronic notebooks, e-books, portable multimedia players (PMPs), navigators, game consoles, digital cameras, and the Internet of Things (IoT).

[0055] The display device 1 shown in the attached figure can be a television. The display device 1 is not limited to this, but can have high resolution to ultra-high resolution, such as HD, UHD, 4K and 8K.

[0056] The display device 1 may have a rectangular shape in the plan view. The planar shape of the display device 1 is not limited to the shape shown, and may also have a circular shape or other shapes.

[0057] The display device 1 may include a display panel 100, a heat dissipation device HDD disposed below the display panel 100, and a lower frame 600 protecting the lower part of the display device 1. The heat dissipation device HDD may include a heat dissipation component 200 and a blower 300, a flow path pattern 400, and a porous component 500 disposed below the heat dissipation component 200.

[0058] Display panel 100 may be a light-emitting display panel that includes light-emitting elements. For example, display panel 100 may be an organic light-emitting display panel using organic light-emitting diodes (OLEDs), a micro light-emitting display panel using micro light-emitting diodes (LEDs), or a quantum dot light-emitting display panel that includes quantum dot light-emitting diodes (LEDs). In the following embodiments, an organic light-emitting display panel may be used as display panel 100, but the invention is not limited thereto. Different types of display panels, such as liquid crystal display (LCD) panels, quantum dot organic light-emitting display (QD-OLED) panels, quantum dot liquid crystal display (QD-LCD) panels, or micro LED panels, may be used.

[0059] The display panel 100 may include a display area DA for displaying images and a non-display area NDA for not displaying images. The display area DA may include pixels. In a planar view, the display area DA may have a rectangular shape with vertical corners or a rectangular shape with rounded corners. The display area DA may have a short side and a long side. The long side of the display area DA may be a side extending in a first direction DR1. The short side of the display area DA may be a side extending in a second direction DR2. However, the planar shape of the display area DA is not limited to a rectangle, and may have a circular shape, an elliptical shape, or various other shapes. The non-display area NDA may be disposed adjacent to the two short sides and two long sides of the display area DA. The non-display area NDA may surround all sides of the display area DA and may form a frame for the display area DA. However, the invention is not limited thereto, and the non-display area NDA may be disposed adjacent only to the two short sides or the two long sides of the display area DA, or one or three sides of the display area DA.

[0060] The display panel 100 may include a lower panel 120 and an upper panel 110 disposed on the lower panel 120.

[0061] The driver chip 130 may be disposed on the non-display area NDA of the display panel 100. The driver chip 130 may include an integrated circuit that drives the display panel 100. In some embodiments, the integrated circuit may be a data driver integrated circuit that generates and provides data signals, but is not limited thereto. The driver chip 130 may be mounted on the surface of the lower panel 120, which may be the same surface as the display surface. The driver chip 130 may be attached to the display panel 100 via an anisotropic conductive film or by ultrasonic bonding.

[0062] although Figure 3 The diagram illustrates a driver chip 130 that can be disposed (e.g., directly disposed) on a lower panel 120 using a chip-on-glass (COG) method, but the invention is not limited thereto. The driver chip 130 can also be disposed using a chip-on-film (COF) method, where the driver chip 130 is mounted on a film and the film is attached to the display panel 100. In another embodiment, the display panel 100 may include a flexible substrate comprising a flexible polymer material such as polyimide. Therefore, the display panel 100 can be twisted, bent, folded, or rolled, and the driver chip 130 can be disposed (e.g., directly disposed) on the flexible display panel 100.

[0063] Printed circuit board 140 may extend to one end of the non-display area NDA of display panel 100. Printed circuit board 140 may be a flexible printed circuit board or a film. Printed circuit board 140 may provide signals for driving display panel 100. Furthermore, as described later, printed circuit board 140 may provide signals to coil electrodes 342 (see reference 140). Figure 10 It provides electricity (e.g., AC power).

[0064] The display panel 100 may include a base substrate SUB. The base substrate SUB may be an insulating substrate. The base substrate SUB may include a transparent material. For example, the base substrate SUB may include a transparent insulating material such as glass, quartz, or combinations thereof. The base substrate SUB may be a rigid substrate. However, the base substrate SUB is not limited thereto and may include a plastic such as polyimide and may have flexible properties that allow it to be twisted, bent, folded, or rolled.

[0065] A buffer layer BL can be disposed on the base substrate SUB. The buffer layer BL can be disposed on the surface of the base substrate SUB to protect the thin-film transistor (TFT) and the light-emitting element (EMD) from moisture that may permeate through the base substrate SUB, which may be susceptible to moisture penetration. The buffer layer BL can be formed from multiple alternately stacked inorganic films. The buffer layer BL can be omitted.

[0066] A thin-film transistor (TFT) can be disposed on a buffer layer BL as a driving element. The TFT may include a semiconductor layer SL, a first insulating layer IL1, a second insulating layer IL2, and a gate electrode GE.

[0067] The semiconductor layer SL of a thin-film transistor (TFT) can be disposed on a buffer layer BL. The semiconductor layer SL may include polycrystalline silicon, monocrystalline silicon, low-temperature polycrystalline silicon, amorphous silicon, oxide semiconductor, or a combination thereof. A light-blocking layer for blocking external light incident on the semiconductor layer SL may be formed between the buffer layer BL and the semiconductor layer SL.

[0068] The first insulating layer IL1 may be disposed on the semiconductor layer SL. The first insulating layer IL1 may be formed of an inorganic film.

[0069] The gate electrode GE may be disposed on the first insulating layer IL1. The gate electrode GE may overlap with the semiconductor layer SL. The gate electrode GE may be formed as a single layer or multiple layers of any one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd) and copper (Cu) or alloys thereof.

[0070] The second insulating layer IL2 can be disposed on the gate electrode GE. The second insulating layer IL2 can be formed of an inorganic film.

[0071] The source electrode SE (or drain electrode) and drain electrode DE (or source electrode) of the thin-film transistor (TFT) may be disposed on the second insulating layer IL2. The source electrode SE and drain electrode DE may be electrically connected to the semiconductor layer SL through contact holes penetrating the second insulating layer IL2 and the first insulating layer IL1. Each of the source electrode SE and drain electrode DE may be formed as a single layer or multiple layers comprising a low-resistivity material (e.g., any one of aluminum (Al), gold (Au), and copper (Cu) or an alloy thereof).

[0072] The third insulating layer IL3 can be disposed on the source electrode SE and the drain electrode DE. The third insulating layer IL3 can be a passivation film protecting the underlying thin-film transistor TFT. The third insulating layer IL3 can be formed of an inorganic film.

[0073] The via layer VIA may be disposed on the third insulating layer IL3. The via layer VIA may be a planarization film used to planarize the steps caused by the thin-film transistor (TFT). The via layer VIA may include an organic insulating material.

[0074] The light-emitting element (EMD) can be disposed on the via layer (VIA). The EMD may include a pixel electrode (PXE), a light-emitting layer (EML), and a common electrode (CME).

[0075] Specifically, the pixel electrode PXE can be disposed on the via layer VIA. The pixel electrode PXE can be the first electrode of the light-emitting element EMD, for example, the anode. The pixel electrode PXE can be electrically connected to the drain electrode DE (or source electrode SE) of the thin-film transistor TFT through contact holes penetrating the via layer VIA and the third insulating layer IL3.

[0076] In a front-emitting structure that can emit light toward the common electrode CME based on the light-emitting layer EML, the pixel electrode PXE can be formed of a metallic material with high reflectivity.

[0077] The pixel defining layer (PDL) may be disposed on the via layer (VIA). The pixel defining layer (PDL) may be disposed on the pixel electrode (PXE) and may include openings exposing the pixel electrode (PXE). The pixel defining layer (PDL) may include an organic insulating material.

[0078] An emissive layer (EML) may be disposed on a pixel electrode (PXE) exposed by a pixel defining layer (PDL). The EML may include an organic material layer. The organic material layer of the EML may include an organic light-emitting layer (OLED), and may also include a hole injection / transport layer and / or an electron injection / transport layer. In an embodiment, the EML may have a tandem structure comprising a plurality of OLEDs overlapping each other in the thickness direction and a charge generation layer disposed between them. Each of the overlapping OLEDs may emit light of the same wavelength, but may emit light of different wavelengths. At least some of the OLEDs may be separable from the same layer of adjacent pixels.

[0079] A common electrode (CME) can be disposed on the light-emitting layer (EML). The common electrode CME can be the second electrode of the light-emitting element (EMD), for example, a cathode. The common electrode CME can be formed commonly in multiple pixels. In embodiments, in a front-emitting structure, the common electrode CME can be formed of a transparent metal material (TCO) that transmits light or a semi-transparent conductive material. In a bottom-emitting structure, the common electrode CME can be formed of a metal material with high reflectivity.

[0080] The heat dissipation device HDD can be disposed below the display panel 100. As described above, the heat dissipation device HDD may include a heat dissipation component 200, a blower 300, a flow path pattern 400, and a porous component 500.

[0081] The heat dissipation component 200 may include a material with high thermal conductivity to dissipate heat generated from the display panel 100 and the driver chip 130. For example, the heat dissipation component 200 may include aluminum, graphite, or a combination thereof. The heat dissipation component 200 may have a flat shape, but is not limited thereto, and may include a curved surface. The heat dissipation component 200 may contact the rear surface of the display panel 100. In the display panel 100, heat may be generated from a display area DA on which pixels may be disposed (e.g., arranged). Therefore, it is desirable that the heat dissipation component 200 overlaps with the display area DA of the display panel 100, but the invention is not limited thereto.

[0082] One end of the heat dissipation component 200 in the second direction DR2 can contact the blower 300. The other end of the heat dissipation component 200 in the second direction DR2 can contact the porous component 500 and the lower frame 600. Specifically, the lower surface of one end of the heat dissipation component 200 in the second direction DR2 can contact the porous component 500, and its side surface can contact the lower frame 600, but the invention is not limited thereto. In addition, the flow path pattern 400 can be provided on one side of the heat dissipation component 200 in the third direction DR3. The heat dissipation component 200 can contact one end of the flow path pattern 400 in the third direction DR3.

[0083] A blower 300 may be disposed on one side of the heat dissipation member 200 in a second direction DR2. Multiple blowers 300 may be disposed (e.g., provided) and arranged on one side of the rear surface of the display panel 100 in the second direction DR2. The multiple blowers 300 may be arranged along a first direction DR1. Each blower 300 may inject air in the second direction DR2 toward one side of the flow path AP defined by the flow path pattern 400. The air blown by each blower 300 may be supplied from the outside through a first hole 610 provided in the lower frame 600, which will be described later, and injected into the flow path AP. The air injected into the flow path AP may be discharged to the outside through a second hole 620 provided in the lower frame 600. (Referring later...) Figures 8 to 10Describe the specific shape and operation of blower 300.

[0084] Flow pattern 400 may be disposed on one side of the heat dissipation member 200 in a third direction DR3 and on one side of the blower 300 in a second direction DR2. Flow pattern 400 may have a shape extending in the second direction DR2. Multiple flow patterns 400 may be provided and may be arranged spaced apart from each other in the first direction DR1. The space between adjacent flow patterns 400 may be a flow path AP. Flow path AP provides a path for air to pass through. Flow path AP may be defined by adjacent flow patterns 400, heat dissipation member 200, and lower frame 600. The boundary between adjacent blowers 300 may overlap with flow pattern 400 in the second direction DR2. Flow pattern 400 may overlap with porous member 500, which will be described later, in the second direction DR2.

[0085] One side of the flow pattern 400 on the third-direction DR3 is accessible to the heat dissipation member 200, and the other side is accessible to the lower frame 600. The flow pattern 400 can be formed by exposure and development processes. For example, the flow pattern 400 may include an organic material, and the organic material may be a photosensitive organic material. After applying the organic material layer, the flow pattern 400 can be formed by exposure and development. The organic material layer may be a negative photosensitive material layer that can be partially cured by light irradiation, but the invention is not limited thereto.

[0086] The porous member 500 may be arranged facing the blower 300. In the porous member 500, air that has passed through the flow path AP may be introduced from the other side of the porous member 500 in the second direction DR2 and may be discharged to one side of the porous member 500 in the second direction DR2. The air discharged from the porous member 500 may be discharged to the outside through the second hole 620 of the lower frame 600. The porous member 500 may have a shape extending in the first direction DR1. The porous member 500 may include a material with holes through which air passes. For example, the porous member 150 may include oxides, carbides, or combinations thereof of silicon, titanium, aluminum, zinc. Specifically, the porous member 500 may include silicon oxide, titanium oxide, aluminum oxide, zinc oxide, silicon dioxide, or combinations thereof. In other embodiments, the porous member 500 may include an adhesive material to connect the heat dissipation member 200 and the lower frame 600 to each other.

[0087] One side of the porous member 500 in the second direction DR2 can contact the lower frame 600, and the other side can contact one end of the flow path pattern 400 in the second direction DR2.

[0088] The lower rack 600 holds the frame of the display device 1 and provides space for storing the display panel 100 and the heat sink HDD. For example, the display panel 100 and the heat sink HDD can be housed within the internal space of the lower rack 600. Although not shown, the internal space of the lower rack 600 can further accommodate at least one of a mold frame, a reflective sheet, and an optical sheet. A side surface of the lower rack 600 in the second direction DR2 can be spaced apart from the blower 300. Another side surface of the lower rack 600 in the second direction DR2 can contact the porous member 500. An adhesive member (not shown) can be further provided between the porous member 500 and the side surface of the lower rack 600 in the second direction DR2, but the invention is not limited thereto.

[0089] The lower frame 600 may include a first hole 610 and a second hole 620 penetrating its side surface. The first hole 610 may be provided on the side surface of the lower frame 600 adjacent to the blower 300 in a second direction DR2. The first hole 610 may be a hole opening from the lower frame 600 along the second direction DR2. A plurality of first holes 610 may be provided and may be arranged along a first direction DR1. Each first hole 610 may overlap with the blower 300 and the flow path AP in the second direction DR2. Each first hole 610 may be configured to overlap one-to-one with each blower 300 and each flow path AP, but the invention is not limited thereto, and the first hole 610 may overlap with either the flow path AP or the blower 300.

[0090] The first opening 610 can be a channel through which air can be supplied from the outside of the display device 1 to the blower 300. For example, air can enter the first opening 610 of the lower frame 600 and then enter the interior of the blower 300. (See below for further details.) Figures 8 to 10 Describe the airflow in blower 300.

[0091] A second hole 620 may be provided on a side surface of the lower frame 600 adjacent to the porous member 500 in the second direction DR2. The second hole 620 may be configured to face the first hole 610. The second hole 620 may be a hole opening from the lower frame 600 along the second direction DR2. A plurality of second holes 620 may be provided and may be arranged along the first direction DR1. Each second hole 620 may overlap with the porous member 500 and the flow path AP in the second direction DR2. Each second hole 620 may be configured to overlap with each flow path AP in a one-to-one correspondence, but the invention is not limited thereto, and a plurality of second holes 620 may overlap with one flow path AP.

[0092] The second hole 620 can be a channel through which air can be discharged from the porous member 500 to the outside of the display device 1. For example, air can enter from the flow path AP onto the side surface of the porous member 500 in the second direction DR2, and can be discharged to the other side surface of the porous member 500 in the second direction DR2. The air discharged to the other side surface of the porous member 500 in the second direction DR2 can be discharged to the outside of the display device 1 through the second hole 620.

[0093] The lower frame 600 may be made of a rigid metallic material such as stainless steel or a material with good heat dissipation properties such as aluminum or aluminum alloys. The lower frame 600 may be formed by processes such as molding, but the invention is not limited thereto. The material of the lower frame 600 may include non-ferrous metals other than iron and alloys containing iron as the main component. The lower frame 600 may include plastic materials (e.g., polycarbonate (PC)). Furthermore, in addition to plastic materials, the lower frame 600 may also include glass fiber.

[0094] Figure 8 This is a cross-sectional view of the blower according to the implementation method. Figure 9 yes Figure 8 A variation of the blower, and Figure 10 This is a view showing the coil according to an embodiment. Figures 8 to 10 This is a view used to specifically explain the internal structure and operation of the aforementioned blower 300. Figure 8 This is a view showing the state in which the internal space of the blower 300 can be expanded, and Figure 9 This is a view showing the state in which the internal space of the blower 300 can be retracted.

[0095] Reference Figures 8 to 10 According to the embodiments, the blower 300 may include a main body 310, a diaphragm 320 connected to the main body 310 and configured to face each other, and a first magnet 330 and a second magnet 340 connected to different diaphragms.

[0096] The main body 310 may form the external frame of the blower 300. The main body 310 may be made of a rigid material. The main body 310 may provide an internal space BS in which diaphragms 320 and first magnets 330 and second magnets 340 connected to different diaphragms 320 may be arranged. As will be described later, the diaphragms 320 may operate within the internal space BS of the blower 300.

[0097] The internal space BS of the blower 300 may include: a first internal space BS1 disposed between diaphragms 320 facing each other, and a second internal space BS2 disposed outside each diaphragm 320. The first internal space BS1 may be a space opened by an inner hole IH and an outer hole OH, which will be described later, and the second internal space BS2 may be a closed space.

[0098] The main body 310 may include an internal flow path IAP disposed inside the side wall. The internal flow path IAP provides a channel for air entering the interior of the display device 1 through the aforementioned first hole 610 to enter the interior of the blower 300. Although Figure 8 and Figure 9 An internal flow path IAP is shown, disposed along a sidewall on a third direction DR3 of the body 310 and a sidewall on a second direction DR2 of the body 310, and another internal flow path IAP is disposed along another sidewall on a third direction DR3 of the body 310 and a sidewall on a second direction DR2 of the body 310; however, the invention is not limited thereto. In another embodiment, the internal flow path IAP may be disposed inside the sidewalls along a first direction DR1 of the body 310 and a sidewall on a second direction DR2 of the body 310, and may also be disposed inside the sidewalls along another sidewall on a first direction DR1 of the body 310 and a sidewall on a second direction DR2 of the body 310. The internal flow path IAP may have a first width W1.

[0099] The inner hole IH and the outer hole OH can be disposed on one side of the body 310 in the second direction DR2. The inner hole IH can be a hole connecting the first internal space BS1 of the blower 300 and the internal flow path IAP, and the outer hole OH can be a hole connecting the internal flow path IAP and the flow path AP. Each of the inner hole IH and the outer hole OH can have a circular shape in cross-sectional view, but is not limited thereto, and can have an elliptical shape or a polygonal shape. In an embodiment, the inner hole IH can have a second width W2, and the outer hole OH can have a third width W3 that is smaller than the second width W2, but the invention is not limited thereto. In an embodiment, the first width W1 can be smaller than the second width W2 and smaller than the third width W3, but the invention is not limited thereto.

[0100] The diaphragm 320 may include a first diaphragm 321 disposed on one side of the third direction DR3 and a second diaphragm 322 disposed on the other side of the third direction DR3. The diaphragm 320 may be coupled to a sidewall and another sidewall on the second direction DR2 of the body 310. The diaphragm 320 may be coupled to the body 310 by an adhesive (not shown), but is not limited thereto, and may also be coupled to the body 310 by ultrasonic bonding or welding.

[0101] The diaphragms 320, positioned facing each other, can adjust the ratio of the first internal space BS1 and the second internal space BS2 of the blower 300. For example, when the distance between the first diaphragm 321 and the second diaphragm 322 increases, the first internal space BS1 expands and the second internal space BS2 contracts, such that the proportion of the first internal space BS1 in the internal space BS can increase and the proportion of the second internal space BS2 in the internal space BS can decrease. Figure 8This is a view showing the state where the first internal space BS1 expands and the second internal space BS2 contracts. The interval between the first diaphragm 321 and the second diaphragm 322 can be a first interval t1.

[0102] Furthermore, when the gap between the first diaphragm 321 and the second diaphragm 322 decreases, the first internal space BS1 contracts and the second internal space BS2 expands, such that the proportion of the first internal space BS1 in the internal space BS can decrease and the proportion of the second internal space BS2 in the internal space BS can increase. Figure 9 This is a view showing the state where the first internal space BS1 is contracted and the second internal space BS2 is expanded. The interval between the first diaphragm 321 and the second diaphragm 322 can be a second interval t2 that is smaller than the first interval t1.

[0103] Even when the distance between the first diaphragm 321 and the second diaphragm 322 is increased to a maximum of a first interval t1, the first diaphragm 321 and the second diaphragm 322 will not contact the body 310 of the blower 300. Therefore, the transmission of vibrations generated by the operation of the diaphragm 320 to the display panel 100 can be minimized.

[0104] The diaphragm 320 may be an elastic thin film. In an embodiment, the diaphragm 320 may be a vibrating plate that can be repeatedly vibrated by another driving device. The diaphragm 320 may be repeatedly bent to apply pressure to the fluid. For example, the diaphragm 320 may include at least one of natural rubber, synthetic rubber, and metal plate, but its material is not limited to these.

[0105] The first magnet 330 and the second magnet 340 may be disposed on the surface of the diaphragm 320. In one embodiment, the first magnet 330 and the second magnet 340 may be electromagnets. In another embodiment, one of the first magnet 330 and the second magnet 340 may be an electromagnet, and the other may be a permanent magnet. Although in Figure 8 and Figure 9 The diagram shows that the first magnet 330 can be a permanent magnet and the second magnet 340 can be an electromagnet, but the invention is not limited thereto. Although in Figure 8 and Figure 9 The diagram shows that in the internal space BS of the blower 300, a first magnet 330, which can be a permanent magnet, can be located on one side of the third direction DR3, and a second magnet 340, which can be an electromagnet, can be located on the other side of the third direction DR3, but the positional relationship between the first magnet 330 and the second magnet 340 is not limited to this.

[0106] A first magnet 330 may be disposed on a side surface of the first diaphragm 321 on a third-direction DR3. The first magnet 330 may be a permanent magnet having different magnetic poles on one side and the other side of the third-direction DR3. For example, one side of the first magnet 330 on the third-direction DR3 may have an N pole, and the other side may have an S pole. In other embodiments, one side of the first magnet 330 on the third-direction DR3 may have an S pole, and the other side may have an N pole. The other side surface of the first magnet 330 on the third-direction DR3 may be entirely attached to the side surface of the first diaphragm 321 on the third-direction DR3. The first magnet 330 and the first diaphragm 321 may be attached to each other by an adhesive (not shown), but the attachment method is not limited to this.

[0107] The second magnet 340 may be disposed on a side surface of the third-direction DR3 of the second diaphragm 322. The second magnet 340 may include a base 341, a coil electrode 342 disposed on the base 341, and a connecting line 343 electrically connecting the coil electrode 342 and a power supply.

[0108] The base 341 may form the outer frame of the second magnet 340 and may have a rectangular plate shape. The planar shape of the base 341 and the planar shape of the first magnet 330 may be the same. The base 341 may overlap with the first magnet 330 on a third-direction DR3.

[0109] The side surface of the third-direction DR3 of the base 341 can be entirely attached to the side surface of the third-direction DR3 of the second diaphragm 322. The base 341 and the second diaphragm 322 can be attached to each other by an adhesive (not shown), but the attachment method is not limited to this.

[0110] The coil electrode 342 may be disposed on the base 341 and may have a spiral structure. Figure 10 A coil electrode with a helical structure in a clockwise direction is shown, but the invention is not limited thereto. In the plan view, the external shape of the coil electrode 342 may be rectangular, but is not limited thereto, and the coil electrode 342 may have a circular shape or other polygonal shapes.

[0111] When an electric current can be applied to the coil electrode 342, according to Ampere's law, the coil electrode 342 can become an electromagnet with different magnetic poles on one side and the other side of its third direction DR3. AC power can be applied to the coil electrode 342. Accordingly, the magnetic poles on one side and the other side of the coil electrode 342 can be changed periodically.

[0112] The coil electrodes 342 may be patterned (e.g., directly patterned) on the base 341 and attached to each other by adhesive (not shown) or by soldering, but the invention is not limited thereto.

[0113] AC power applied to the coil electrode 342 can be applied via the connecting wire 343. One end of the connecting wire 343 can be electrically connected to the coil electrode 342, and the other end can be electrically connected to the printed circuit board 140. As described above, the printed circuit board 140 can provide AC power to the coil electrode 342, wherein the AC power can be applied via the connecting wire 343. Furthermore, in the case where the display panel 100 can be driven, the connecting wire 343 can be electrically connected to the printed circuit board 140 to apply AC power. Accordingly, the display panel 100 and the blower 300 can be driven together. For example, the printed circuit board 140 can be used as a controller to control the drive of the blower 300 by controlling the attractive and repulsive forces between the first magnet 330 and the second magnet 340.

[0114] In the following text, the operation of the blower 300 will be described by way of example using a first magnet 330 having an N pole on one side of its third-direction DR3 and an S pole on the other side of its third-direction DR3.

[0115] As described above, AC power can be applied to the coil electrodes 342 of the second magnet 340. Accordingly, the magnetic poles (N pole and S pole) formed on one side and the other side of the third-direction DR3 of the second magnet 340 can be periodically changed.

[0116] For example, if the second magnet 340 has an S pole on one side of the third-direction DR3, a repulsive force can act between the first magnet 330 and the second magnet 340. The first diaphragm 321 and the second diaphragm 322 can become far apart from each other. Air can enter the blower 300 from the outside of the display device 1 through the internal flow path IAP. Specifically, the air entering from the outside through the internal flow path IAP can enter the first internal space BS1 through the inner hole IH. The first internal space BS1 can expand, and the second internal space BS2 can contract. The internal pressure in the second internal space BS2 can increase.

[0117] Conversely, when the second magnet 340 has an N pole on one side of the third-direction DR3, an attractive force can act between the first magnet 330 and the second magnet 340. The first diaphragm 321 and the second diaphragm 322 can become closer to each other. Due to the attractive force between the first magnet 330 and the second magnet 340 and the internal pressure in the second internal space BS2, the first internal space BS1 can contract, and the second internal space BS2 can expand. As a result, air can be injected into the flow path AP through the inner hole IH and the outer hole OH. Since the first width W1 of the internal flow path IAP can be sufficiently smaller than the second width W2 of the inner hole IH and the third width W3 of the outer hole OH, the amount of air flowing out through the internal flow path IAP is negligible when the first internal space BS1 contracts.

[0118] In the airflow within the internal flow path IAP, even when the first internal space BS1 contracts, effective airflow can still be guided into the interior of the blower 300 due to the inertia of the airflow to the first internal space BS1. Here, effective airflow can mean that airflow to one side and airflow to the other side can cancel each other out to allow air to flow in a substantially uniform direction.

[0119] Furthermore, in the airflow within the outer hole OH, due to the inertia of the airflow injected toward the flow path AP, the effective airflow can be guided to the flow path AP.

[0120] The air injected from the blower 300 into the flow path AP can improve the heat dissipation effect of the heat dissipation component 200 by the convection generated by the blower 300 towards the porous component 500.

[0121] The display device 1 according to the embodiment may include: a flow path AP disposed adjacent to the heat dissipation member 200; and a blower 300 capable of supplying air to the flow path AP. The blower 300 may include diaphragms 320 arranged facing each other and a first magnet 330 and a second magnet 340 connected to each diaphragm 320. An AC voltage may be applied to the second magnet 340 of the blower 300 to cause the first internal space BS1 of the facing diaphragms 320 to repeatedly expand and contract, thereby injecting air into the flow path AP, and thus improving the heat dissipation effect of the heat dissipation member 200 by utilizing convection. Therefore, the heat generated when the display device 1 can be driven can be effectively dissipated.

[0122] Other embodiments of the display device 1 will be described below. In the embodiments described below, for configurations that are the same as those already described, their descriptions will be omitted or simplified, and the differences will be described.

[0123] Figure 11 This is a cross-sectional view of a display device according to another embodiment.

[0124] Reference Figure 11 The display device 1_1 according to an embodiment may include a heat dissipation member 200_1, which includes a flat portion 210_1 and a protrusion 220_1 projecting from the flat portion 210_1 onto another side of a third direction DR3. The protrusion 220_1 may have a shape extending in a second direction DR2. The protrusion 220_1 may serve as a flow path pattern 400 in the display device 1 according to an embodiment. For example, the protrusion 220_1 of the heat dissipation member 200_1 may define a flow path AP.

[0125] The display device 1_1 according to the embodiment may include: a flow path AP disposed adjacent to the heat dissipation member 200_1; and a blower 300 capable of supplying air to the flow path AP. The blower 300 may include diaphragms 320 arranged facing each other and a first magnet 330 and a second magnet 340 connected to each diaphragm 320. An AC voltage may be applied to the second magnet 340 of the blower 300 to cause the first internal space BS1 of the facing diaphragms 320 to repeatedly expand and contract, thereby injecting air into the flow path AP, and thus improving the heat dissipation effect of the heat dissipation member 200_1 by utilizing convection. Therefore, the heat generated when the display device 1_1 can be driven can be effectively dissipated.

[0126] Because the surface area of ​​the heat dissipation member 200_1 exposed to the flow path AP is larger than the surface area of ​​the heat dissipation member 200 of the display device 1 according to the embodiment exposed to the flow path AP, the display device 1_1 according to the embodiment exhibits improved heat dissipation. Furthermore, the display device 1_1 according to the embodiment has the advantage that by introducing the protrusion 220_1 of the heat dissipation member 200_1 instead of the flow path pattern 400 included in the display device 1 according to the embodiment, manufacturing processes can be omitted.

[0127] Figure 12 This is a cross-sectional view of a display device according to another embodiment.

[0128] Reference Figure 12 The display device 1_2 according to the embodiment may include a lower frame 600_2, which includes a bottom 610_2 and a protrusion 620_2 projecting from the bottom 610_2 onto a third direction DR3. The protrusion 620_2 may have a shape extending in a second direction DR2. The protrusion 620_2 may serve as a flow path pattern 400 in the display device 1 according to the embodiment. For example, the protrusion 620_2 of the lower frame 600_2 may define a flow path AP.

[0129] The display device 1_2 according to the embodiment may include: a flow path AP disposed adjacent to the heat dissipation member 200; and a blower 300 capable of supplying air to the flow path AP. The blower 300 may include diaphragms 320 arranged facing each other and a first magnet 330 and a second magnet 340 connected to each diaphragm 320. An AC voltage may be applied to the second magnet 340 of the blower 300 to cause the first internal space BS1 of the facing diaphragms 320 to repeatedly expand and contract, thereby injecting air into the flow path AP, and thus improving the heat dissipation effect of the heat dissipation member 200 by utilizing convection. Therefore, the heat generated when the display device 1_2 can be driven can be effectively dissipated.

[0130] The advantage of the display device 1_2 according to the embodiment is that the manufacturing process can be omitted by introducing the protrusion 620_2 of the lower frame 600_2 instead of the flow path pattern 400 included in the display device 1 according to the embodiment.

[0131] Figure 13 This is a cross-sectional view of a display device according to another embodiment.

[0132] Reference Figure 13 The display device 1_3 according to an embodiment may include a first heat dissipation member 200 and a second heat dissipation member 800_3 disposed between the first heat dissipation member 200 and the flow path pattern 400. In an embodiment, the side surface on the third-direction DR3 of the second heat dissipation member 800_3 may include a nanopatterned structure, and therefore the surface area exposed to the flow path AP can be large. The nanopatterned structure may mean a patterned structure including protrusions having dimensions of several nanometers to tens of nanometers. In another embodiment, the second heat dissipation member 800_3 may have a higher thermal conductivity than the first heat dissipation member 200.

[0133] The second heat dissipation member 800_3 may be disposed on the first heat dissipation member 200. A side surface on the third-direction DR3 of the second heat dissipation member 800_3 may contact a side surface on the third-direction DR3 of the first heat dissipation member 200. An adhesive layer (not shown) may be provided between the first heat dissipation member 200 and the second heat dissipation member 800_3 to attach the first heat dissipation member 200 and the second heat dissipation member 800_3 to each other; however, the invention is not limited thereto, and the first heat dissipation member 200 and the second heat dissipation member 800_3 may be attached to each other by methods such as ultrasonic bonding or welding.

[0134] The display device 1_3 according to the embodiment may include: a flow path AP disposed adjacent to the second heat dissipation member 800_3; and a blower 300 capable of supplying air to the flow path AP. The blower 300 may include diaphragms 320 arranged facing each other and a first magnet 330 and a second magnet 340 connected to each diaphragm 320. An AC voltage may be applied to the second magnet 340 of the blower 300 to cause the first internal space BS1 of the facing diaphragms 320 to repeatedly expand and contract, thereby injecting air into the flow path AP, and thus improving the heat dissipation effect of the heat dissipation member 200 by utilizing convection. Therefore, the heat generated when the display device 1_3 can be driven can be effectively dissipated.

[0135] In the display device 1_3 according to the embodiment, compared with the display device 1 according to the embodiment, since the second heat dissipation member 800_3 has a nanopattern, the surface area exposed to the flow path AP can be larger, and an improved heat dissipation effect can be exhibited.

[0136] The effects of the implementation are not limited to those described above, and various other effects are expected herein.

[0137] Although embodiments of the invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions, and substitutions are possible without departing from the scope and spirit of the invention as disclosed in the appended claims and their equivalents.

[0138] In concluding this detailed description, those skilled in the art will appreciate that many variations and modifications can be made to the embodiments without substantially departing from the principles of the invention. Therefore, the disclosed embodiments of the invention are used only in a general and descriptive sense and are not intended to be limiting.

Claims

1. A display device, comprising: The first heat dissipation component is disposed on the lower surface of the display panel; as well as An air generator is disposed on the lower surface of the first heat dissipation component, wherein... The air generator includes: Blower; and An airflow path is disposed on one side of the blower and extends in a first direction, the blower comprising: The main body defines the internal space of the blower; A first diaphragm and a second diaphragm are disposed in the internal space of the main body, with the first diaphragm and the second diaphragm facing each other; A first magnet is disposed on the surface of the first diaphragm; A second magnet is disposed on the surface of the second diaphragm; and The exhaust port of the main body is disposed between the first diaphragm and the second diaphragm, and the exhaust port faces the airflow path opening. At least one of the first magnet and the second magnet is an electromagnet.

2. The display device according to claim 1, wherein, The blowers are configured as a plurality of blowers, and the plurality of blowers are arranged in a second direction intersecting the first direction.

3. The display device according to claim 1, wherein, The surfaces of the first magnet and the second magnet face each other.

4. The display device according to claim 3, wherein, The first magnet is a permanent magnet, and the second magnet is an electromagnet.

5. The display device according to claim 4, wherein, Alternating current is applied to the second magnet.

6. The display device according to claim 5, wherein, The attractive and repulsive forces change periodically and are applied between the first magnet and the second magnet.

7. The display device according to claim 1, further comprising: The second heat dissipation component is disposed on the lower surface of the first heat dissipation component.

8. The display device according to claim 7, wherein, The surface of the second heat dissipation component includes nanopatterns.

9. The display device according to claim 7, wherein, The second heat dissipation component has a higher thermal conductivity than the first heat dissipation component.

10. The display device according to claim 1, wherein, The first heat dissipation member includes a protrusion that protrudes toward the opposite side of the display panel, has a shape that extends in the first direction and is arranged in a second direction that intersects the first direction.

11. The display device according to claim 1, further comprising: The lower rack provides space to accommodate the display panel, the first heat dissipation component, and the blower.

12. The display device according to claim 11, wherein, The lower frame includes a protrusion that protrudes toward the display panel, has a shape extending in the first direction, and is arranged in a second direction intersecting the first direction.

13. The display device according to claim 1, wherein, The main body includes internal flow paths, and The internal flow path provides a passage for supplying air to the blower from the outside.

14. The display device according to claim 13, wherein, The vent includes: The first hole has a first width; and The second hole is disposed on one side of the first hole in the first direction, and has a second width that is smaller than the first width.

15. A display device, comprising: Heat dissipation components are disposed on the lower surface of the display panel; as well as An air generator is disposed on the lower surface of the heat dissipation component, wherein, The air generator includes: Blower; and An airflow path is provided on one side of the blower and extends in a first direction. The blower includes: The main body defines the internal space of the blower; A first diaphragm and a second diaphragm are disposed in the internal space of the main body, with the first diaphragm and the second diaphragm facing each other; A first magnet is disposed on the surface of the first diaphragm; A second magnet is disposed on the surface of the second diaphragm; The controller controls the attractive and repulsive forces between the first and second magnets; and An exhaust port connects the space between the first magnet and the second magnet to the airflow path. The first magnet and the second magnet face each other.

16. The display device according to claim 15, wherein, The first magnet is a permanent magnet, and the second magnet is an electromagnet.

17. The display device according to claim 16, wherein, Alternating current is applied to the second magnet.

18. The display device according to claim 15, wherein, The heat dissipation component includes: The protrusion, protruding toward the opposite side of the display panel, has a shape extending in the first direction and is arranged in a second direction intersecting the first direction.

19. The display device according to claim 15, further comprising: The lower rack provides space to accommodate the display panel, the heat dissipation components, and the blower. The lower frame includes a protrusion that protrudes toward the display panel, has a shape that extends in the first direction and is arranged in a second direction that intersects the first direction.

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