Display device

Abstract

An embodiment of the present specification discloses a display device including: a housing having an opening formed on one side thereof; a display panel disposed in the opening; a first substrate disposed on the back surface of the display panel; a first flexible film connecting the display panel and the first substrate; a second substrate disposed to be spaced apart from the first substrate; and a second flexible film connecting the first substrate and the second substrate, where the second substrate is further spaced apart from the display panel than the first substrate.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to and the benefit of Korean Patent Application No. 10-2023-0133984, filed on October 10, 2023, the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0003] The present disclosure relates to a display device. Background Art

[0004] Organic light emitting display devices reproduce images by emitting light using organic light emitting diodes (OLEDs) placed in individual pixels according to input image signals. The organic light emitting display devices have fast response speed and high luminous efficiency, brightness and viewing angle, and have excellent contrast and color reproducibility because they can express black grayscale in full black. These organic light emitting display devices do not require a backlight unit.

[0005] When the display device is driven, heat is generated in electronic components, wiring, etc. provided on the substrate of the display panel, and this heat affects the display panel. For example, the temperature distribution of the display panel becomes uneven depending on the position of the substrate, and when the temperature distribution of the display panel is uneven, the image quality of the image reproduced on the display panel deteriorates due to the electronic components having temperature characteristics.

[0006] When a separate member is used to reduce the influence of heat on the display panel, there are ineffective problems in productivity such as an increase in process cost because the number of assembly man-hours is increased due to the separate member.

[0007] Therefore, there is a need to develop a display device capable of minimizing the influence of heat generated from a substrate on a display panel while improving productivity in terms of structure. Summary of the invention

[0008] The embodiment provides a display device improved in structure to minimize the thermal influence of heat generated from a substrate on a display panel.

[0009] The embodiment provides a display device improved in structure to improve productivity.

[0010] The embodiment provides a display device with improved structure to enhance the assembly and heat dissipation performance of a substrate.

[0011] Objects to be solved by the embodiments are not limited to the above-described objects, and objects not described above will be clearly understood by those skilled in the art from the following description.

[0012] A display device according to an embodiment of the present specification includes: a housing having an opening formed on one side of the housing; a display panel disposed in the opening; a first substrate disposed on a back surface of the display panel; a first flexible film connecting the display panel and the first substrate; a second substrate disposed to be spaced apart from the first substrate; and a second flexible film connecting the first substrate and the second substrate, wherein the second substrate is spaced apart from the display panel to a greater extent than the first substrate.

[0013] A display device according to an embodiment of the present specification includes: a housing having an opening formed on one side of the housing; a display panel disposed in the opening; a first substrate disposed on a back surface of the display panel; a first flexible film connecting the display panel and the first substrate; a second substrate disposed to be spaced apart from the first substrate; a second flexible film connecting the first substrate and the second substrate; and a cover glass disposed on a front surface of the display panel, wherein the housing includes a housing body and a side wall protruding from an edge of the housing body to contact an edge of the cover glass, and the second substrate is bonded to the housing body.

[0014] This embodiment can minimize the thermal influence on the display panel by arranging the substrate having relatively higher heat dissipation property of the two substrates to be more widely spaced apart from the display panel.

[0015] This embodiment may improve the dissipation of heat generated from the substrate by using a heat sink disposed in the housing.

[0016] This embodiment can improve the assembly and fixation of the substrate by implementing the guide structure and the separation prevention structure in the housing.

[0017] This embodiment can prevent damage to the display panel due to assembling of the housing by fixing the housing to a cover glass disposed on the front side of the display panel, while minimizing transfer of heat generated from the substrate to the display panel through the housing.

[0018] This embodiment can minimize the transfer of heat generated from the substrate to the display panel through the material of the housing.

[0019] This embodiment can minimize non-uniformity with respect to temperature distribution in a display panel by using a plate made of a metal material, thereby improving display quality.

[0020] This embodiment can improve the life of the display panel by minimizing the thermal impact on the display panel. Therefore, low-power driving of the production process can be achieved in terms of reducing production energy.

[0021] Various useful advantages and effects of the embodiment are not limited to the above, and effects not described above will be clearly understood by those skilled in the art from the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and other objects, features and advantages of the present specification will become more apparent to those skilled in the art by describing in detail exemplary embodiments of the present specification with reference to the accompanying drawings, in which:

[0023] Figure 1 is a perspective view showing a display device according to one embodiment of the present specification;

[0024] Figure 2 is an exploded perspective view showing a display device according to one embodiment of the present specification;

[0025] Figure 3 is a plan view showing a display device according to an embodiment of the present specification;

[0026] Figure 4 It is shown along Figure 3 A cross-sectional view of a section taken along line AA in FIG.

[0027] Figure 5 is a cross-sectional view showing a housing of a display device according to an embodiment of the present specification;

[0028] Figure 6 is a bottom perspective view showing a housing of a display device according to an embodiment of the present specification;

[0029] Figure 7 is a block diagram schematically showing a configuration of a display device according to an embodiment of the present specification;

[0030] Figure 8 is a cross-sectional view schematically showing a cross-sectional structure of a display area of ​​a display device according to an embodiment of the present specification;

[0031] Fig. 9 is a perspective view showing a second substrate of a display device according to an embodiment of the present specification;

[0032] Fig.10 is a bottom perspective view showing a second substrate of a display device according to an embodiment of the present specification;

[0033] Fig.11 is a diagram showing an arrangement relationship between a housing and a second substrate of a display device according to an embodiment of the present specification;

[0034] Fig.12 yes Fig.11 An enlarged view of region A;

[0035] Fig.13 is a diagram showing a heat sink of a display device according to an embodiment of the present specification;

[0036] Fig.14 is a diagram showing a display device according to another embodiment of the present specification;

[0037] Fig.15 is a diagram showing an arrangement relationship between a second substrate and a ground member of a display device according to another embodiment of the present specification; and

[0038] Fig.16 is a diagram illustrating a cross section of a ground member provided in a display device according to another embodiment of the present specification. DETAILED DESCRIPTION

[0039] The advantages and features of the present disclosure and the methods for achieving the advantages and features will be more clearly understood from the embodiments described below with reference to the accompanying drawings. However, the present disclosure is not limited to the following embodiments, but can be implemented in various different forms. On the contrary, the present embodiment will make the disclosure of the present disclosure complete and allow those skilled in the art to fully understand the scope of the present disclosure. The claims are not defined or limited by the present disclosure.

[0040] In describing the present disclosure, detailed descriptions of known related arts may be omitted so as not to unnecessarily obscure the subject matter of the present disclosure.

[0041] Terms such as "comprising," "including," "having," and "consisting of" as used herein are generally intended to allow for the addition of other components unless these terms are used with the term "only." References to the singular should be construed to include the plural unless explicitly stated otherwise.

[0042] When describing the position or interconnection relationship between two components, such as "on top of", "above", "below", "beside", "connected or coupled to", "crossing", "intersecting", etc., one or more other components may be inserted between them unless "immediately" or "directly" is used.

[0043] When describing a temporal context, such as "after", "subsequently", "next", or "before", it may not be continuous in time scale unless "immediately" or "directly" is used.

[0044] The terms “first”, “second”, etc. may be used to distinguish components from one another, but the function or structure of a component is not limited by the sequence numbers preceding the component or the component names.

[0045] The following embodiments may be combined or associated with each other in whole or in part, and various types of interconnections and drives may be performed technically. These embodiments may be implemented independently of each other, or implemented together in an interrelated relationship.

[0046] The terms (including technical terms and scientific terms) used in the embodiments of the present disclosure will be interpreted as terms commonly understood by ordinary technicians in the field to which the present disclosure belongs, unless otherwise specifically defined and described, and common terms such as dictionary-defined terms will be interpreted according to their contextual meanings in the relevant field.

[0047] Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0048] In today's information society, display devices are becoming increasingly important as visual information transmission media, and they are being improved to meet requirements such as low power consumption, thinness, light weight, high definition, and high efficiency.

[0049] The display device according to one embodiment of the present specification can reduce the influence of heat generated from the circuit board on the display panel through two separated circuit boards and a structure for separating the circuit boards. Therefore, by improving the life of the display panel, greenhouse gases can be reduced in terms of reducing production energy.

[0050] The display device according to one embodiment of the present specification may improve the lifespan of a display panel by uniformly implementing temperature distribution of the display panel using a plate formed of a metal material.

[0051] A display device according to one embodiment of the present specification can improve heat dissipation performance of a circuit board through a heat sink coupled to the case while improving assembly and fixation of the circuit board using the case.

[0052] Figure 1 is a perspective view showing a display device according to an embodiment of the present specification, Figure 2 is an exploded perspective view showing a display device according to an embodiment of the present specification, Figure 3 is a plan view showing a display device according to an embodiment of the present specification, Figure 4 It is shown along Figure 3 A cross-sectional view of a section taken along line AA, Figure 5 is a cross-sectional view showing a housing of a display device according to an embodiment of the present specification.

[0053] Reference Figures 1 to 5, a display device according to one embodiment of the present disclosure may include: a housing 100 having an opening formed at one side thereof; a display panel 200 disposed in the opening 130 of the housing 100; a board 300 disposed in the back side of the display panel 200; a first substrate 400 disposed on the back side of the board 300; a first flexible film 500 connecting the display panel 200 and the first substrate 400; a second substrate 600 disposed to be spaced apart from the first substrate 400; and a second flexible film 700 connecting the first substrate 400 and the second substrate 600. In this case, the display device according to one embodiment of the present specification may minimize the influence of heat generated in the second substrate 600 on the display panel 200 by arranging the second substrate 600 to be more spaced apart from the board 300 than the first substrate 400. Here, since the heat generated in the second substrate 600 is relatively higher than the heat generated in the first substrate 400, the temperature of the second substrate 600 may be higher than that of the first substrate 400. In addition, one surface on which an input image is displayed based on the display panel 200 may be referred to as a front surface of the display panel 200 , and a surface opposite to the front surface may be referred to as a rear surface.

[0054] In addition, the display device according to one embodiment of the present specification may further include a cover glass 800 disposed on the front side of the display panel.

[0055] In addition, the display device according to one embodiment of the present specification may further include a heat sink 900 coupled to the housing 100 to be in contact with the second substrate 600 .

[0056] The housing 100, the cover glass 800, and the heat sink 900 may form the appearance of the display device according to one embodiment of the present specification. In addition, a receiving space may be formed therein by the combination of the housing 100 and the cover glass 800. Figure 4 As shown, the display panel 200, the board 300, the first substrate 400, the first flexible film 500, the second substrate 600, the second flexible film 700, etc. may be disposed in the receiving space.

[0057] Reference Figures 1 to 5 The housing 100 may be formed in a cylindrical shape and may form the appearance of a display device according to an embodiment of the present specification. In addition, the display panel 200, the board 300, the first substrate 400, the first flexible film 500, the second substrate 600, the second flexible film 700, etc. may be disposed inside the housing 100.

[0058] The shape or material of the housing 100 may be variously changed. For example, the housing 100 may be formed of a synthetic resin material formed into various shapes, but is not limited thereto. The housing 100 may be formed of a metal material (such as aluminum) that can withstand high temperatures well. However, considering the design freedom of the shape of the housing 100 and the thermal influence of the second substrate 600 coupled to the housing 100, the housing 100 may be formed of a synthetic resin material such as plastic.

[0059] The housing 100 may include a housing body 110 and a sidewall 120 extending to protrude from an edge of the housing body 110. Thus, an opening 130 may be formed in the housing 100.

[0060] The case body 110 may be formed in a plate shape, and may be disposed to be spaced apart from the board 300 .

[0061] In addition, a hole 111 may be formed in the housing body 110, and a heat sink 900 may be disposed in the hole 111. Therefore, a display device according to one embodiment of the present specification may provide a compact display device by reducing a size in the Z direction by disposing the heat sink 900 in the hole 111. Here, the hole 111 may be referred to as a housing hole or a first hole.

[0062] The side wall 120 may protrude from the edge of the housing body 110 toward the cover glass 800. In addition, the side wall 120 may include a curved surface in consideration of an object on which the display device is mounted. Here, the object may be a dashboard or a center dashboard of a vehicle.

[0063] In addition, the end 121 of the side wall 120 may be fixed to the edge of the back surface of the cover glass 800 using an adhesive member or the like. In this case, the side wall 120 may be spaced apart from the side surface of the display panel 200 by a predetermined distance D. Therefore, damage to the display panel 200 may be prevented by the combination of the housing 100 and the cover glass 800.

[0064] Figure 6 is a bottom perspective view showing a housing of a display device according to an embodiment of the present specification.

[0065] Reference Figure 6 , the housing 100 may include a protrusion 140 and a hook component 150 provided on the housing body 110. Therefore, the second substrate 600 may be fixed to the inside of the housing 100 using the protrusion 140 and the hook component 150. Here, the protrusion 140 may be referred to as a housing protrusion or a first protrusion.

[0066] The protrusion 140 may be formed to protrude from one side of the interior of the housing body 110. In addition, the protrusion 140 may guide the combination of the housing 100 and the second substrate 600. In this case, at least two protrusions 140 may be formed to correspond to the holes of the second substrate 600. Therefore, by the combination of the protrusion 140 of the housing 100 and the hole of the second substrate 600, the second substrate 600 may be located at a preset position to prevent horizontal movement or swimming.

[0067] The hook assembly 150 may be provided at one side of the interior of the housing body 110 to prevent movement of the second substrate 600 .

[0068] Reference Figure 6 , the hook assembly 150 may include a hook body 151 disposed in the housing body 110, a hook 152 rotatably disposed in the hook body 151, a pin 153 serving as a rotation axis of the hook 152, and an elastic member 154 disposed between the hook 152 and the hook body 151. Here, the hook body 151 may be formed in a rectangular frame shape and may be formed integrally with the housing body 110.

[0069] The hook 152 rotates with the pin 153 as a reference, and one side of the hook 152 can contact the circuit board body 610 of the second substrate 600, and can support one side of the circuit board body 610 using the elastic restoring force of the elastic member 154. Therefore, the hook assembly 150 can prevent the movement of the second substrate 600.

[0070] The display panel 200 may be disposed in the opening 130 of the housing 100 to display an input image. In addition, the display panel 200 may be formed in a plate shape having a predetermined thickness, and may include a front side on which an image is realized and a back side opposite to the front side. Here, the back side may be the drawing (see Figure 2 ) is a surface of the display panel 200 disposed at the upper part based on the Z direction.

[0071] Figure 7 is a block diagram schematically showing a configuration of a display device according to an embodiment of the present specification.

[0072] Reference Figure 7 The display device includes: a display panel 200 in which a plurality of pixels are arranged in a display area AA; and a driving circuit for driving the pixels.

[0073] The display panel 200 may be a panel having a rectangular structure having a length in the X-axis direction, a width in the Y-axis direction, and a thickness in the Z-axis direction. The pixel includes a plurality of sub-pixels SP having different colors. The driving circuit includes a data driver DD, a gate driver GD, and a timing controller TC that controls the gate driver GD and the data driver DD. The display area AA that displays the input image on the display panel 200 may be a screen visible from the front of the display panel 200. Here, the width and length of the display panel 200 may be set to various design values ​​according to the application field of the display device. In addition, the X-axis direction may represent a longitudinal direction or a horizontal direction, the Y-axis direction may represent a width direction or a vertical direction, and the Z-axis direction may represent an up-down direction or a thickness direction. In addition, the X-axis direction, the Y-axis direction, and the Z-axis direction may be perpendicular to each other, but may also represent different directions that are not perpendicular to each other. Therefore, each of the X-axis direction, the Y-axis direction, and the Z-axis direction may be described as one of the first direction, the second direction, and the third direction. In addition, a plane extending in the X-axis direction and the Y-axis direction may represent a horizontal plane.

[0074] The input image is displayed on the sub-pixels SP disposed in the display area AA of the display panel 200. Each sub-pixel SP includes a light emitting element and a pixel circuit driving the light emitting element. The light emitting element may be a light emitting diode (LED) or a micro light emitting diode (micro LED).

[0075] A plurality of scan wirings (in other words, scan lines) SL and a plurality of data wirings (in other words, data lines) DL are arranged to cross each other on the display panel 200. Each sub-pixel SP is connected to the scan wirings SL and the data wirings DL. Figure 7 The power wiring omitted in the display panel 200 (in other words, the power line) may be connected to each sub-pixel SP. In the display panel 200, the non-display area NA may be provided outside the display area AA.

[0076] The gate driver GD supplies a scan signal to the scan line SL in response to a gate control signal provided by the timing controller TC. The gate driver GD may be provided at least in the non-display area NA of the display panel 200, such as Figure 7 As shown, or set in the display area AA.

[0077] The data driver DD converts the image data received from the timing controller TC into a reference compensation voltage and outputs a data voltage in response to a data control signal provided by the timing controller TC. The data voltage output from the data driver DD is supplied to the data wiring DL.

[0078] The timing controller TC sorts the image data input from the outside and supplies the sorted image data to the data driver DD. The timing controller TC can generate a gate control signal and a data control signal based on a timing signal (e.g., a dot clock signal, a data enable signal, and a horizontal / vertical synchronization signal) synchronized with the input image signal. The timing controller TC supplies the gate control signal to the gate driver GD and the data control signal to the data driver DD to control the timing of the operation of the gate driver GD and the data driver DD.

[0079] The non-display area NA may have link wirings (in other words, link lines) and pad electrodes disposed therein to transmit signals to the sub-pixels SP in the display area AA. In addition, one or more of a gate driver IC in which a circuit for a gate driver GD is integrated and a data driver IC in which a circuit for a data driver DD is integrated may be disposed in the non-display area NA. The non-display area NA may be located on the back side of the display panel 200, that is, on the back side without the sub-pixels SP, or the non-display area NA may be minimized to the extent that it is not visible when an image is displayed on the display panel 200.

[0080] Drivers such as a gate driver GD, a data driver DD, and a timing controller TC may be connected to the display panel 200 in various ways. For example, the gate driver GD may be disposed in the non-display area NA in a gate in panel (GIP) manner, or may be disposed between sub-pixels SP in the display area AA in a gate in active area (GIA) manner. For example, the data driver DD and the timing controller TC may be formed on a separate flexible film and a printed circuit board (hereinafter referred to as "PCB"), and the data driver DD and the timing controller TC may be electrically connected to the display panel 200 by bonding the flexible film and the PCB to a pad electrode formed on the non-display area NA of the display panel 200.

[0081] Figure 8 is a cross-sectional view schematically showing a cross-sectional structure of a display region of a display device according to an embodiment of the present specification.

[0082] Reference Figure 8 The display panel 200 may include a circuit layer 12 disposed on the substrate 10 and a light emitting device layer 14 disposed on the circuit layer 12. In addition, the display panel 200 may include an encapsulation layer 16 disposed on the light emitting device layer 14, a touch sensor layer 18 formed on the encapsulation layer 16, and a color filter layer 20 disposed on the touch sensor layer 18.

[0083] The substrate 10 may be formed of an insulating material or a flexible material. For example, the substrate 10 may be made of glass, metal, plastic, or the like.

[0084] The circuit layer 12 may include: a pixel circuit connected to wirings such as data lines, gate lines, power lines, etc., a gate driver connected to the gate lines, etc. In addition, the wirings and circuit elements of the circuit layer 12 may include a plurality of insulating layers, two or more metal layers separated from each other with insulating layers interposed therebetween, and an active layer including a semiconductor material.

[0085] The light emitting device layer 14 may include a light emitting device driven by a pixel circuit. In addition, the light emitting device may include a red light emitting device, a green light emitting device, and a blue light emitting device. In another embodiment, the light emitting device layer 14 may include a white light emitting device and a color filter. The light emitting device of the light emitting device layer 14 may be covered by a protective layer including an organic film and a protective film.

[0086] The encapsulation layer 16 covers the light emitting device layer 14 to seal the circuit layer 12 and the light emitting device layer 14. Here, the encapsulation layer 16 may have a multi-insulating film structure in which organic films and inorganic films are alternately stacked. In this case, the inorganic film blocks the penetration of moisture or oxygen. The organic film flattens the surface of the inorganic film. When the organic film and the inorganic film are stacked into multiple layers, the movement path of moisture or oxygen is longer than that of a single layer, so the penetration of moisture / oxygen that affects the light emitting device layer 14 can be effectively blocked.

[0087] The touch sensor layer 18 may include a capacitive touch sensor that senses a touch input based on a change in capacitance before and after the touch input. The touch sensor layer 18 may include a metal wiring pattern and an insulating film that form a capacitance of the touch sensor. The insulating film may insulate the intersection of the metal wiring pattern and may flatten the surface of the touch sensor layer.

[0088] A polarizer omitted in the drawings may be attached to the touch sensor layer 18. The polarizer may convert polarization of external light reflected by the metal pattern of the circuit layer 12 to improve visibility and contrast. Here, the polarizer may be implemented as a linear polarizer, a polarizer in which a phase delay film is bonded, or a circular polarizer. In addition, a cover glass 800 may be attached to the polarizer.

[0089] Color filter layer 20 may be formed on touch sensor layer 18 .

[0090] The color filter layer 20 may include a red color filter, a green color filter, and a blue color filter. In addition, the color filter layer 20 may further include a black matrix pattern. The color filter layer 20 may absorb a portion of the wavelength of light reflected from the circuit layer 12 to replace the role of the polarizer and increase the color purity. In the present embodiment, the color filter layer 20 having a higher transmittance than the polarizer may be applied to the display panel 200 to improve the transmittance of the display panel 200 and to improve the thickness and flexibility of the display panel 200. The cover glass 800 may be adhered to the color filter layer 20.

[0091] The color filter layer 20 may include an organic film covering the color filter and the black matrix pattern. The extension of the organic film may cover the remaining portion of the inorganic film or the panel substrate 10 at the frame region of the display panel 200 , that is, at the edge region of the display panel 200 .

[0092] The board 300 may be formed to have a predetermined thickness, and may be formed in a shape corresponding to the rear surface of the display panel 200. The board 300 may be disposed between the display panel 200 and the substrates 400 and 600.

[0093] The board 300 may support and protect the display panel 200 by being attached to the back side of the display panel 200. For example, since the board 300 is fixed to the back side of the display panel 200 by an adhesive member, it is possible to support the display panel 200 while protecting one side of the display panel 200. The adhesive member here may be formed of an adhesive material such as a foam tape and may be arranged along the edge of the board 300.

[0094] The plate 300 may be made of a material having rigidity and high thermal conductivity, for example, a metal material such as aluminum (Al), copper (Cu), zinc (Zn), silver (Ag), gold (Au), iron (Fe), stainless steel (STS), or invar. Thus, uniform temperature distribution on the display panel 200 may be achieved by dispersing heat generated within the display panel 200 while minimizing temperature variations in the region of the display panel 200.

[0095] In addition, the coating layer 310 may be formed on the board 300 in a manner to prevent damage due to corrosion, chemical materials, etc. For example, the coating layer 310 may be formed only on one surface of the board 300 in consideration of the external aesthetics, productivity, heat dissipation performance, etc. of the board 300.

[0096] The coating layer 310 on the plate 300 may be formed of an insulating material by an electrodeposition coating process, but is not necessarily limited thereto. The electrodeposition coating here is one of the coating methods in which a coating target serving as a positive electrode or a negative electrode is immersed in a solution containing a water-soluble coating for electrodeposition, and a coating film is electrodeposited on the surface of the coating target by flowing a direct current between the coating target and an opposite electrode.

[0097] In addition, the coating 310 can be set to black according to the black body thermal radiation principle. Therefore, the emissivity of the coating 310 reaches or exceeds 80%. The black body here means an object that completely absorbs radiation in all wavelength ranges, that is, an object that absorbs all radiation energy incident from the outside and has a maximum radiation (absorption) rate of 1 without any surface reflection, that is, an object with only re-radiation possible. The thermal radiation emitted from a black body is called black body radiation. In practice, it is difficult to manufacture a perfect black body with a radiation efficiency of 1, but it is feasible to increase the radiation efficiency in a manner close to the radiation efficiency of a black body. For example, the radiation efficiency of charcoal or soot is close to that of a black body.

[0098] Therefore, the black coating layer 310 formed by the electrodeposition coating can increase the robustness of the paint film and can improve the heat transfer performance and heat emissivity of the board 300. In addition, the board 300 can prevent or minimize the local transfer of heat generated in the substrates 400 and 600 to the display panel 200 by being arranged between the display panel 200 and the substrates 400 and 600.

[0099] The first substrate 400 may be disposed on the rear surface of the display panel 200. In addition, the board 300 may be disposed between the display panel 200 and the first substrate 400. Therefore, the first substrate 400 may be disposed on the rear surface of the board 300.

[0100] The first substrate 400 may include a plate-shaped circuit board body and circuit elements mounted on the circuit board body. Also, by driving the display panel 200, heat may be generated in the circuit elements of the first substrate 400.

[0101] In the display device according to one embodiment of the present specification, the separation member 1000 is disposed between the board 300 and the first substrate 400 to prevent or reduce heat generated from the first substrate 400 from affecting the display panel 200 .

[0102] The separation member 1000 may separate the first substrate 400 from the plate 300 by a predetermined distance G1. Here, an adhesive member may be used as the separation member 1000. For example, a double-sided tape having a predetermined thickness may be used as the separation member 1000. Therefore, the separation member 1000 may prevent direct contact between the plate 300 and the first substrate 400, thereby minimizing thermal influence between the plate 300 and the first substrate 400.

[0103] A plurality of separation members 1000 may be disposed between the plate 300 and the first substrate 400 to be spaced apart from each other.

[0104] In the display device according to one embodiment of the present specification, the influence of heat generated in the first substrate 400 on the board 300 can be minimized by forming an air gap G1 in a region where the separation member 1000 is not provided between the board 300 and the first substrate 400. For example, the air gap G1 and the air moving through the air gap G1 can reduce the temperature of the first substrate 400. Here, the air gap G1 formed in the region between the board 300 and the first substrate 400 may be referred to as a first gap or a first air gap.

[0105] At least one first flexible film 500 may electrically connect the display panel 200 to the first substrate 400. In detail, the first flexible film 500 may connect the pad electrode of the display panel 200 to the output terminal of the first substrate 400. In this case, the first flexible film 500 may be bonded to the display panel 200 through an anisotropic conductive film (ACF: Anisotropic Conductive Film). Here, the first flexible film 500 may be a flexible printed circuit board (FPCB: Flexible Printed Circuit Board), and may be a film chip (COF: Chip On Film) on which an IC circuit integrating a data driver DD and / or a gate driver GD is mounted, but is not limited thereto. The first flexible film 500 may be referred to as a first flexible circuit film.

[0106] The second substrate 600 may be disposed inside the housing 100 , and may be fixed inside the housing 100 using a fastening member such as a bolt or a screw.

[0107] The second substrate 600 may be more spaced apart from the board 300 than the first substrate 400 .

[0108] In a display device according to one embodiment of the present specification, an element that generates a relatively large amount of heat during driving is disposed on the second substrate 600, and the second substrate 600 is disposed to be spaced further apart from the board 300 than the first substrate 400, thereby minimizing the influence of the heat generated in the second substrate 600 on the display panel 200.

[0109] Reference Figure 4 , since the second substrate 600 is disposed on the inner bottom surface of the housing body 110, the second substrate 600 may be spaced apart from the board 300 more than the first substrate 400. In detail, since the second substrate 600 is coupled to the housing body 110 disposed to be spaced apart from the board 300, an air gap (G2) may be formed between the second substrate (600) and the board (300), and air moving through the air gap G2 may reduce the temperature of the second substrate 600. Here, the air gap G2 formed between the second substrate 600 and the board 300 may be referred to as a second gap or a second air gap.

[0110] In this case, unlike the first substrate 400 disposed adjacent to the board 300, the second air gap may be larger than the first air gap since the second substrate 600 is coupled to the housing body 110. Therefore, even if the temperature of heat generated in the second substrate 600 is relatively higher than the temperature of heat generated in the first substrate 400, the thermal influence of the second substrate 600 on the board 300 is relatively lower than the thermal influence generated by the first substrate 400.

[0111] In addition, since the second substrate 600 may be formed of a synthetic resin material such as plastic having a relatively low thermal conductivity, and an element generating heat may be disposed on the back surface of the second substrate 600 as the opposite surface to the front surface of the second substrate 600, rather than on the front surface of the second substrate 600 disposed to face the board 300, the heat generated by the element is unlikely to directly affect the display panel 200. Here, the front surface of the second substrate 600 may be referred to as a first substrate surface, and the back surface as the opposite surface to the front surface may be referred to as a second substrate surface.

[0112] Fig. 9 is a perspective view showing a second substrate of a display device according to an embodiment of the present specification, Fig.10 is a bottom perspective view showing a second substrate of a display device according to an embodiment of the present specification.

[0113] Reference Fig. 9 and Fig.10 , the second substrate 600 may include a plate-shaped circuit board body 610, a plurality of elements 620 and circuit wiring (not shown) disposed on the circuit board body 610, a plurality of holes formed in the circuit board body 610, and a connector 630. In this case, since the second substrate 600 is formed to have a larger area than the first substrate 400, more elements 620 may be disposed on the second substrate 600 than on the first substrate 400.

[0114] The circuit board body 610 may be formed in a plate shape. In addition, the circuit board body 610 is formed of a synthetic resin material such as plastic so that the heat generated from the element 620 may be minimized from being transferred to the display panel 200. In addition, the circuit board body 610 may be fixed to the housing body 110 using a fastening member.

[0115] The plurality of holes penetrating the circuit board body 610 may include a first hole 611 and a second hole 612. The first hole 611 and the second hole 612 may be formed at the edge of the circuit board body 610 in consideration of the assembly of the housing 100 and the second substrate 600 and the arrangement of the element 620.

[0116] The first hole 611 may be coupled to the protrusion 140 of the housing 100 to guide the circuit board body 610 at a preset position. Here, at least two first holes 611 may be formed in the circuit board body 610 so that the circuit board body 610 is guided at a preset position.

[0117] The second hole 612 may be a hole through which a fastening member for fastening the housing 100 and the second substrate 600 passes. At least two second holes 612 may be formed in the circuit board body 610 in consideration of fixing the circuit board body 610 .

[0118] A plurality of elements 620 and circuit wirings may be disposed on the circuit board body 610. In addition, since driving the display device according to one embodiment of the present specification may generate heat in the plurality of elements 620 and the circuit wirings, the plurality of elements 620 that generate more heat than the circuit wirings may be disposed on the back side of the circuit board body 610 in consideration of the thermal influence on the display panel 200.

[0119] The connector 630 may be provided on the back side of the circuit board body 610. In addition, an external device such as an external power source may be coupled to the connector 630. In this case, the connector 630 may penetrate the through hole 911 of the heat sink 900 and may be protected by a heat sink 930 formed to protrude from the periphery of the through hole 911.

[0120] Fig.11 is a diagram showing an arrangement relationship between a housing and a second substrate of a display device according to an embodiment of the present specification, Fig.12 yes Fig.11 Magnified view of area A.

[0121] Reference Fig.11 and Fig.12 , the second substrate 600 may be assembled inside the housing 100 by using the coupling between the protrusion 140 of the housing 100 and the first hole 611 and the hook assembly 150. Also, the second substrate 600 may be fixed to the housing 100 by a coupling member passing through the second hole 612. Here, as the coupling member Sc, a bolt, a screw, etc. may be used.

[0122] The second substrate 600 can be located at a preset position by inserting the first hole 611 of the second substrate 600 into the protrusion 140 of the housing 100 in a state where the hook 152 rotated with the pin 153 as a reference is tilted outward. In this case, the hook 152 rotated with the pin 153 as a reference can support one side of the circuit board body 610 by the elastic restoring force of the elastic member 154. Therefore, the combination between the protrusion 140 of the housing 100 and the first hole 611 and the hook assembly 150 can prevent the movement of the second substrate 600. And, the second substrate 600 can be fixed to the inner surface of the housing body 110 using the fastening member Sc.

[0123] At least one second flexible film 700 may electrically connect the first substrate 400 and the second substrate 600. In this case, the second flexible film 700 may be bonded to the first substrate 400 and the second substrate 600 by an anisotropic conductive film (ACF), but is not necessarily limited thereto. Here, the second flexible film 700 may be a flexible printed circuit board (FPCB), and may be a chip on film (COF) on which an IC in which a circuit of a data driver DD and / or a gate driver GD is integrated is mounted, but is not limited thereto. In addition, the second flexible film 700 may be referred to as a second flexible circuit film.

[0124] The cover glass 800 may be disposed on the front surface of the display panel 200 to protect the display panel 200. In this case, the cover glass 800 may be attached to the front surface of the display panel 200 using an adhesive member.

[0125] The horizontal area of ​​the cover glass 800 may be formed to be larger than the horizontal area of ​​the display panel 200. Therefore, even if the display panel 200 is attached to the back side of the cover glass 800, the edge of the back side of the cover glass 800 may be exposed, and the end 121 of the housing 100 may be disposed on the exposed edge. In this case, since the side wall 120 may be disposed to be spaced apart from the side of the display panel 200 by a predetermined distance D, even if the end 121 of the housing 100 is fixed to the back side of the cover glass 800 by using an adhesive member, damage to the display panel 200 may be prevented.

[0126] The heat sink 900 may be disposed in contact with the second substrate 600 to radiate heat generated from the second substrate 600 to the outside. In this case, the heat sink 900 may be disposed in the hole 111 formed in the housing body 110 to implement a compact display device.

[0127] Fig.13 is a diagram showing a heat sink of a display device according to an embodiment of the present specification.

[0128] Reference Figure 4 and Fig.13 , the heat sink 900 may include a heat sink body 910, at least one protrusion 920 formed to protrude from the front of the heat sink body 910, and a plurality of heat sink fins 930 formed to protrude from the front of the heat sink body 910. Here, the heat sink body 910, the protrusion 920, and the plurality of heat sink fins 930 may be integrally formed and may be formed of a metal material.

[0129] The heat sink body 910 may be formed in a plate shape. In addition, the heat sink body 910 may be disposed in the hole 111 of the housing 100 to implement a compact display device.

[0130] The heat sink body 910 may include a through hole 911 formed to penetrate in the Z direction. The through hole 911 may be formed to correspond to the connector 630 of the second substrate 600. Therefore, the connector 630 may be provided to penetrate the through hole 911.

[0131] The protrusion 920 may be formed to protrude from one side of the heat sink body 910 toward the second substrate 600. Here, the protrusion 920 of the heat sink 900 may be referred to as a second protrusion or a heat sink protrusion, and may be formed to protrude from the front side of the plate-shaped heat sink body 910. The front side of the heat sink body 910 may refer to a surface disposed to face the second substrate 600.

[0132] The protrusion 920 may be disposed to be in contact with the second substrate 600, and heat generated from the second substrate 600 may be moved to the heat sink body 910 through the protrusion 920 to be dissipated. Figure 4 As shown, the protrusion 920 may contact the element 620 of the second substrate 600 that generates a large amount of heat, and heat conduction may be activated by using a heat-conducting member such as thermal grease. Here, for example, the protrusion 920 contacts one element 620 disposed on the second substrate 600, but is not limited thereto. For example, the heat sink 900 may include a plurality of protrusions 920, and at least one of the plurality of protrusions 920 may contact at least one of the plurality of elements 620.

[0133] The plurality of heat dissipation fins 930 may be formed to protrude from the rear surface of the heat sink body 910 and may be exposed to the outside. Therefore, the plurality of heat dissipation fins 930 may improve the heat dissipation performance of the heat sink 900.

[0134] In addition, a plurality of heat sinks 930 may be disposed around the through-hole 911 to protect the connector 630 disposed in the through-hole 911 .

[0135] Fig.14 is a diagram showing a display device according to another embodiment of the present specification, Fig.15 is a diagram showing an arrangement relationship between a second substrate and a ground member of a display device according to another embodiment of the present specification.

[0136] When will be based on Figure 4 The display device of one embodiment of the present specification is Fig.14 When comparing the display device of another embodiment of the present specification, according to Fig.14 The display device of another embodiment of the present specification shown in FIG. 1 is different in that it further includes a grounding member 1100 disposed between the second substrate 600A and the heat sink 900. Here, according to Figure 4 The display device of one embodiment of the present specification shown in FIG. 1 may be the display device according to the first embodiment, and according to Fig.14 The display device of another embodiment of the present specification shown may be the display device according to the second embodiment.

[0137] In describing the display device according to the second embodiment, since the same components as those of the display device according to the first embodiment may be denoted by the same reference numerals, a detailed description thereof will be omitted.

[0138] Reference Fig.14 and Fig.15 , the display device according to the second embodiment may include: a housing 100 having an opening formed at one side thereof; a display panel 200 disposed at the opening 130 of the housing 100; a board 300 disposed at the back side of the display panel 200; a first substrate 400 disposed at the back side of the board 300; a first flexible film 500 connecting the display panel 200 and the first substrate 400; a second substrate 600A disposed to be spaced apart from the first substrate 400; a second flexible film 700 connecting the first substrate 400 and the second substrate 600; a cover glass 800 disposed at the front side of the display panel; a heat sink 900 disposed to be in contact with one side of the second substrate 600A; and a grounding member 1100 disposed between the second substrate 600A and the heat sink 900.

[0139] The second substrate 600A may include: a plate-shaped circuit board body 610; a plurality of components 620 and circuit wiring (not shown) arranged on the circuit board body 610; a plurality of holes formed in the circuit board body 610; a connector 630; and a grounding pattern 640 arranged on the circuit board body 610 to correspond to the grounding member 1100.

[0140] The ground pattern 640 may be disposed on the rear surface of the circuit board body 610 and may be formed in a shape corresponding to the ground member 1100 .

[0141] The ground pattern 640 may be electrically connected to the element 620 of the second substrate 600A through a circuit wiring. Also, the ground pattern 640 may overlap with the ground member 1100 in the Z direction to be in contact with the ground member 1100 .

[0142] The ground member 1100 may be disposed between the ground pattern 640 of the second substrate 600A and the front surface of the heat sink body 910 to electrically connect the ground pattern 640 to the heat sink body 910. Here, the ground member 1100 may be formed of a conductive material, and one side of the ground member 1100 may contact the ground pattern 640, and the other side of the ground member 1100 may contact the heat sink body 910. Therefore, the display device according to the second embodiment may implement a grounding structure in which the second substrate 600A and the heat sink 900 are connected using the ground member 1100.

[0143] The grounding member 1100 may be formed in a structure having elastic restoring force, but is not limited thereto. For example, the grounding member 1100 may be formed by including particles of various metal materials in a synthetic resin material having elastic restoring force.

[0144] Fig.16 is a diagram showing a cross section of a ground member provided in a display device according to another embodiment of the present specification.

[0145] Reference Fig.16 , the grounding member 1100 may be formed into a structure having an elastic restoring force. For example, the grounding member 1100 may be formed into a mesh pattern and may shrink or relax by a predetermined load. Therefore, since the grounding member 1100 has an elastic restoring force, even if a predetermined load is applied to the heat sink 900, damage to the second substrate 600A due to the load may be prevented.

[0146] The embodiments of the present disclosure described above will be briefly described as follows.

[0147] A display device according to an embodiment of the present disclosure includes: a housing having an opening formed on one side of the housing; a display panel disposed in the opening; a first substrate disposed on a back surface of the display panel; a first flexible film configured to connect the display panel and the first substrate; a second substrate disposed to be spaced apart from the first substrate; and a second flexible film configured to connect the first substrate and the second substrate, wherein the second substrate is disposed to be spaced apart from the display panel more than the first substrate.

[0148] The display device according to an embodiment of the present disclosure may further include a metal plate disposed on a rear surface of the display panel.

[0149] In the display device according to the embodiment of the present disclosure, the first substrate may be spaced apart from the panel by a prescribed interval by a spacing member.

[0150] The display device according to an embodiment of the present disclosure may further include: a cover glass disposed on the front side of the display panel, wherein the housing may include a housing body and a side wall formed to protrude from an edge of the housing body, and an end of the side wall may contact an edge of the cover glass.

[0151] In the display device according to the embodiment of the present disclosure, the side surface of the display panel may be disposed to be spaced apart from the side wall.

[0152] In a display device according to an embodiment of the present disclosure, the second substrate may include a plate-shaped circuit board body and a plurality of elements arranged on the circuit board body, wherein the housing may include a protrusion formed to protrude from the housing body, and wherein the protrusion may be coupled to a hole formed in the circuit board body.

[0153] In the display device according to the embodiment of the present disclosure, the second substrate may include a plate-shaped circuit board body and a plurality of elements disposed on the circuit board body, wherein the housing may include a hook component configured to prevent the circuit board body from moving.

[0154] In a display device according to an embodiment of the present disclosure, the hook assembly may include a hook body arranged in a shell body of a shell, a hook rotatably arranged in the hook body, and an elastic member arranged between the hook and the hook body, wherein the hook can support one side of the circuit board body by using the elastic restoring force of the elastic member.

[0155] The display device according to an embodiment of the present disclosure may further include a heat sink coupled to the housing, wherein a protrusion of the heat sink may contact an element disposed on the second substrate.

[0156] In the display device according to the embodiment of the present disclosure, the housing may include a housing body disposed to be spaced apart from the display panel and a sidewall formed to protrude from an edge of the housing body, wherein the heat sink may be disposed in a hole formed in the housing body.

[0157] The display device according to an embodiment of the present disclosure may further include a ground member disposed between the second substrate and the heat sink, wherein one side of the ground member may contact a ground pattern of the second substrate and the other side of the ground member contacts the heat sink.

[0158] In the display device according to the embodiment of the present disclosure, the ground member may be formed in a mesh structure having elastic restoring force.

[0159] In the display device according to the embodiment of the present disclosure, the second substrate may include a plate-shaped circuit board body and a plurality of elements and connectors disposed on the circuit board body, wherein the elements and connectors may be disposed on a rear surface of the circuit board body.

[0160] The display device according to an embodiment of the present disclosure may further include a heat sink coupled to the housing, wherein the heat sink may include a heat sink body and a through hole formed in the heat sink body, and the connector may penetrate the through hole.

[0161] In the display device according to the embodiment of the present disclosure, the heat sink may further include a plurality of heat dissipation fins formed to protrude from a rear surface of the heat sink body.

[0162] A display device according to an embodiment of the present disclosure may include: a housing having an opening formed at one side of the housing; a display panel disposed in the opening; a first substrate disposed on a back surface of the display panel; a first flexible film configured to connect the display panel with the first substrate; a second substrate disposed to be spaced apart from the first substrate; a second flexible film configured to connect the first substrate with the second substrate, and a cover glass disposed on a front surface of the display panel, wherein the housing may include a housing body and a side wall protruding from an edge of the housing body to contact an edge of the cover glass, and wherein the second substrate may be bonded to the housing body.

[0163] In the display device according to the embodiment of the present disclosure, the case may include a protrusion formed to protrude from the case body, wherein the protrusion is coupled to the hole formed in the circuit board body of the second substrate.

[0164] In the display device according to the embodiment of the present disclosure, the housing may include a hook component configured to prevent movement of the circuit board body.

[0165] The above-mentioned objects to be achieved by the present disclosure, means for achieving the objects, and effects of the present disclosure do not specify essential features of the claims, and therefore, the scope of the claims is not limited by the present disclosure.

[0166] Although the embodiments of the present disclosure have been described in more detail with reference to the accompanying drawings, the present disclosure is not limited thereto and can be implemented in many different forms without departing from the technical concept of the present disclosure. Therefore, the embodiments disclosed in the present disclosure are provided for illustrative purposes only and are not intended to limit the technical concept of the present disclosure. The scope of the technical concept of the present disclosure is not limited thereto. Therefore, it should be understood that the above-mentioned embodiments are illustrative in all aspects and do not limit the present disclosure. The scope of protection of the present disclosure should be interpreted based on the attached claims, and all technical concepts in its equivalent range should be interpreted as falling within the scope of the present disclosure.

[0167] Description of Reference Numerals

[0168] 100: Housing 200: Display panel

[0169] 300: Plate 400: First substrate

[0170] 500: first flexible film 600, 600A: second substrate

[0171] 700: Second flexible film 800: Cover glass

[0172] 900: Radiator 1000: Separation component

[0173] 1100: Grounding components

[0174] The various embodiments described above can be combined to provide further embodiments. If necessary, aspects of the embodiments can be modified to employ concepts of various patents, applications and publications to provide further embodiments.

[0175] These and other changes can be made to the embodiments in light of the above detailed description. Generally, in the following claims, the terms used should not be interpreted as limiting the claims to the specific embodiments disclosed in the specification and claims, but should be understood to include all possible embodiments and the full range of equivalents to which these claims are entitled. Therefore, the claims are not limited by this disclosure.

Claims

1. A display device, comprising: a housing having a side; an opening located at the side of the housing; a display panel disposed in the opening and having a rear surface; a first substrate, the first substrate being disposed on the back surface of the display panel; a first flexible film, the first flexible film being configured to connect the display panel and the first substrate; a second substrate, the second substrate being spaced apart from the first substrate; as well as A second flexible film is configured to connect the first substrate and the second substrate, wherein the second substrate is further spaced apart from the display panel than the first substrate.

2. The display device according to claim 1, further comprising: A metal plate is disposed on the back surface of the display panel.

3. The display device according to claim 2, further comprising: a separation member, the separation member being located between the first substrate and the metal plate, The first substrate is separated from the metal plate by the separation member.

4. The display device according to claim 1, further comprising: a cover glass, the cover glass being disposed on the front surface of the display panel, The housing comprises a housing body and a side wall extending from an edge of the housing body, and Wherein, the end of the side wall contacts the edge of the cover glass.

5. The display device according to claim 4, wherein: A side surface of the display panel is spaced apart from the side wall.

6. The display device according to claim 4, wherein: The second substrate includes a plate-shaped circuit board body and a plurality of components arranged on the circuit board body. wherein the housing comprises a protrusion extending from the housing body, and Wherein, the protrusion is coupled to the hole in the circuit board body.

7. The display device according to claim 3, wherein: The second substrate includes a plate-shaped circuit board body and a plurality of components arranged on the circuit board body, and Wherein, the housing includes a hook component configured to prevent movement of the circuit board body.

8. The display device according to claim 7, wherein: The hook assembly includes: a hook body disposed in a housing body of the housing; a hook rotatably disposed in the hook body; and an elastic member disposed between the hook and the hook body, and The hook supports the side of the circuit board body through the elastic restoring force of the elastic member.

9. The display device according to claim 1, wherein: The second substrate includes a plate-shaped circuit board body, the second substrate also includes a plurality of components and connectors arranged on the circuit board body, and Wherein, the plurality of components and the connector are arranged on the back side of the circuit board body.

10. The display device according to claim 9, further comprising: a heat sink coupled to the housing, Wherein, the heat sink comprises a heat sink body and a through hole in the heat sink body, and Wherein, the connector passes through the through hole.

11. The display device according to claim 10, wherein: The heat sink further includes a plurality of cooling fins extending from a rear surface of the heat sink body.

12. A display device, comprising: a housing having a side; an opening located at the side of the housing; a display panel disposed in the opening and having a rear surface; a first substrate, the first substrate being disposed on the back surface of the display panel; a first flexible film, the first flexible film being configured to connect the display panel and the first substrate; a second substrate, the second substrate being spaced apart from the first substrate; as well as An element, wherein the element is disposed on the second substrate; a second flexible film configured to connect the first substrate and the second substrate; as well as a heat sink coupled to the housing and comprising a protrusion, wherein the protrusion of the heat sink contacts the element disposed on the second substrate, and Wherein, the second substrate is further spaced apart from the display panel than the first substrate.

13. The display device according to claim 12, wherein: The housing includes a housing body disposed to be spaced apart from the display panel, the housing further includes a side wall protruding from an edge of the housing body, the housing body includes a hole, and Wherein, the heat sink is arranged in the hole in the shell body.

14. The display device according to claim 12, further comprising: a grounding portion, the grounding portion being arranged between the second substrate and the heat sink, The first side of the grounding portion contacts the grounding pattern of the second substrate, and the second side of the grounding portion contacts the heat sink.

15. The display device according to claim 14, wherein: The grounding portion has a mesh structure, and the mesh structure has elastic restoring force.

16. A display device, comprising: a housing having an opening; a display panel, the display panel being disposed in the opening of the housing; a first substrate, wherein the first substrate is disposed on the back surface of the display panel; a first flexible film, the first flexible film being configured to connect the display panel and the first substrate; a second substrate, the second substrate being spaced apart from the first substrate; a second flexible film configured to connect the first substrate and the second substrate; as well as a cover glass, the cover glass being disposed on the front surface of the display panel, The housing comprises a housing body and a side wall protruding from an edge of the housing body, the side wall contacts an edge of the cover glass, and Wherein, the second substrate is coupled to the housing body.

17. The display device according to claim 16, wherein: The housing includes a protrusion protruding from the housing body, and Wherein, the protrusion is coupled to a hole in the circuit board body of the second substrate.

18. The display device according to claim 17, wherein: The housing includes a hook component configured to prevent movement of the circuit board body.

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