Display device

Abstract

The invention relates to a display device. A display device according to one embodiment may include: a display panel on which a video is reproduced; a metal plate disposed behind the display panel; a first circuit board disposed behind the metal plate and electrically connected to the display panel; a chip-on-film (COF) having one side electrically connected to the display panel, the other side electrically connected to the first circuit board, and a portion disposed to be bent; a driving element disposed on the chip-on-film and protruding from the chip-on-film; and a reinforcing plate which is provided at a position such that at least a portion thereof overlaps the driving element behind the chip on film, and which is adhered to the chip on film.

Description

Technical Field

[0001] The present disclosure relates to a display device, and more particularly, to, for example but not limited to, a display device having a structure for protecting a chip-on-film from external impact. Background Art

[0002] The content described in this section merely provides background information about the present application and does not constitute related art.

[0003] In the mature information age, the field of display devices for visually displaying electrical information signals is rapidly developing, and research is continuously conducted to develop properties such as thinness, lightness, and low power consumption of various display devices.

[0004] Such display devices include liquid crystal display (LCD) devices, quantum dot display panel devices (QD), field emission display (FED) devices, electrowetting display (EWD) devices, and organic light emitting diode display (OLED) devices, among others.

[0005] Display devices have been developed to be miniaturized so that users can carry the display devices, or to be mounted on mobile devices such as vehicles, and display devices are being improved so that users can use the display devices more conveniently.

[0006] The descriptions provided in the Background section should not be assumed to be prior art simply because they are mentioned in or associated with this section. The Background section may include information describing one or more aspects of the subject technology, and the descriptions in this section do not limit the present disclosure. Summary of the Invention

[0007] The display device may be provided with a chip on film (COF). The chip on film may have a driving element embedded therein for driving the display device. The chip on film may be made of a thin flexible material. Therefore, the chip on film is very effective in increasing the convenience of assembly and reducing the space of the components.

[0008] The chip on film can electrically connect the display panel to the printed circuit board. To this end, the chip on film can be arranged by bending the chip on film at a portion adjacent to the edge of the display panel. As a result, the chip on film can protrude from the lower end of the display panel.

[0009] In addition, the display device may be subjected to external impact during use. For example, when the display device is installed on a movable device such as a vehicle, the external impact caused by the movement of the vehicle may be transmitted to the display device.

[0010] The display device may be deformed or, in severe cases, damaged by the external impact. In severe cases, fragments of the display device may injure a user riding in a vehicle.

[0011] Even when the display device is not damaged when receiving an external impact, some components of the display device may be damaged by the external impact, resulting in malfunction or failure of the display device.

[0012] In particular, in the case of a display device having a slim structure or a display device provided with a bendable flexible member, the influence of the external impact may be greater.

[0013] Since the chip on film is made thin, it may be susceptible to external impact. Such external impact may damage the chip on film. Therefore, it is necessary to develop a technology to suppress damage to the chip on film caused by external impact.

[0014] Specifically, since the driving element provided in the film chip has a predetermined volume, the driving element can be provided to protrude from the film chip. Therefore, when an external impact is applied to the film chip, the flexible film chip can be easily moved, and thus the driving element provided in the film chip may also be moved.

[0015] The driving element may be easily damaged by moving and impacting other components of the display device. Damage to the driving element may seriously affect the entire display device. Therefore, it is necessary to develop a structure that protects the driving element from external impact.

[0016] Therefore, the present disclosure is directed to providing a display device having a structure that protects a chip-on-film and a driving element provided in the chip-on-film from external impact.

[0017] Furthermore, the present disclosure is directed to providing a display device having a reinforcing plate that protects driving elements of a chip-on-film from external impact.

[0018] Furthermore, the present disclosure is directed to providing a display device having an avoidance part for protecting a driving element of a chip-on-film from external impact.

[0019] Furthermore, the present disclosure is directed to providing a display device having a pad that protects a driving element of a chip-on-film from external impact.

[0020] The purpose of the present disclosure is not limited to the above-mentioned purpose, and other purposes and advantages not mentioned in the present disclosure can be understood by the following description and more clearly understood by the embodiments of the present disclosure. In addition, it will be easily seen that the purposes and advantages of the present disclosure can be achieved by the devices described in the claims and their combinations.

[0021] According to one embodiment, a display device may include: a display panel that reproduces a video on the display panel; a metal plate that is disposed behind the display panel; a first circuit board that is disposed behind the metal plate and electrically connected to the display panel; a chip on film (COF) that has one side electrically connected to the display panel, the other side electrically connected to the first circuit board, and a portion that is configured to be bent; a driving element that is disposed on the chip on film and protrudes from the chip on film; and a reinforcing plate that is disposed at a position so that at least a portion thereof overlaps with the driving element behind the chip on film and is adhered to the chip on film.

[0022] The driving element may protrude toward the first circuit board, and the escape portion may be formed at a position corresponding to a position where the driving element is provided on the first circuit board.

[0023] The escape portion may be provided as a groove formed by recessing an end portion of the first circuit board or as a through hole formed by penetrating the first circuit board.

[0024] The display device may include a support pad disposed between the chip on film and the first circuit board to maintain a gap between the driving element and the first circuit board.

[0025] According to another embodiment, a display device may include: a display panel on which a video is reproduced; a metal plate arranged behind the display panel; a first circuit board arranged behind the metal plate and electrically connected to the display panel; a chip on film having one side electrically connected to the display panel, the other side electrically connected to the first circuit board, and a portion arranged to be bent; and a driving element arranged on the chip on film and protruding from the chip on film toward the first circuit board, wherein a avoidance portion may be formed at a position corresponding to the position where the driving element is arranged on the first circuit board.

[0026] According to another embodiment, a display device may include: a display panel on which a video is reproduced; a metal plate disposed behind the display panel; a first circuit board disposed behind the metal plate and electrically connected to the display panel; a chip on film having one side electrically connected to the display panel, the other side electrically connected to the first circuit board, and a portion configured to be bent; a driving element disposed on the chip on film and protruding from the chip on film toward the first circuit board; and a support pad disposed between the chip on film and the first circuit board to maintain a gap between the driving element and the first circuit board.

[0027] In the display device according to the present disclosure, a reinforcing plate that enhances rigidity of the chip-on-film may be adhered to the chip-on-film.

[0028] Other systems, methods, features, and advantages will be or become apparent to those skilled in the art upon review of the following figures and detailed description. All such additional systems, methods, features, and advantages are intended to be included within this specification, be within the scope of this disclosure, and be protected by the appended claims. Nothing in this section should be construed as limiting these claims. Additional aspects and advantages will be discussed below in conjunction with the embodiments of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this application, illustrate embodiments of the disclosure and together with the description serve to explain the principle of the disclosure.

[0030] Figure 1 is a front view showing a display device according to one embodiment.

[0031] Figure 2 is a rear view showing a display device according to one embodiment.

[0032] Figure 3 is a side view showing a display device according to one embodiment.

[0033] Figure 4 is an exploded view showing a display device according to one embodiment.

[0034] Figure 5 is an enlarged view showing a portion of a side surface of a display device according to one embodiment.

[0035] Figure 6 It is a view for the purpose of describing the present disclosure.

[0036] Figure 7 is a view showing a display device having a structure according to one embodiment.

[0037] Figure 8 It is along Figure 7 Cross-sectional view along line 8-8'.

[0038] Figure 9 is a view showing a display device having a structure according to another embodiment.

[0039] Figure 10 is a view showing a display device having a structure according to still another embodiment.

[0040] Figure 11 It is along Figure 10 A cross-sectional view along line 11-11'.

[0041] Figure 12is a view showing a display device having a structure according to still another embodiment.

[0042] Figure 13 It is along Figure 12 A cross-sectional view along line 13-13'.

[0043] Figure 14 is a view showing a display device having a structure according to still another embodiment.

[0044] Figure 15 It is along Figure 14 A cross-sectional view along line 15-15'.

[0045] Throughout the drawings and detailed description, unless otherwise described, the same drawing reference numerals should be understood to refer to the same elements, features, and structures. The relative sizes and depictions of these elements may be exaggerated for clarity, illustration, and convenience. DETAILED DESCRIPTION

[0046] The above-mentioned objects, features and advantages will be described in detail below with reference to the accompanying drawings, so that those skilled in the art to which the present disclosure belongs will be able to easily implement the technical ideas of the present disclosure. When describing the present disclosure, when it is determined that the detailed description of the known technology related to the present disclosure may unnecessarily obscure the main points of the present disclosure, its detailed description will be omitted or may be briefly provided. Hereinafter, exemplary embodiments according to the present disclosure will be described in detail with reference to the accompanying drawings. In the accompanying drawings, the same reference numerals are used to represent the same or similar components.

[0047] Although the terms "first", "second", etc. are used to describe various components, it is self-evident that these components are not limited by these terms. These terms are only used to distinguish one component from another component, and unless otherwise specified, it is self-evident that the first component may be the second component.

[0048] Throughout the specification, unless otherwise specified, each component may be singular or plural. Throughout the drawings and detailed description, unless otherwise specified, the same reference numerals should be understood to refer to the same elements, features, and structures. For clarity, illustration, and convenience, the relative sizes and depictions of these elements may be exaggerated.

[0049] Unless the context clearly indicates otherwise, singular expressions used herein include plural expressions. In the present application, terms such as "consisting of" or "including" should not be interpreted as necessarily including all the various components or operations described in the specification, but should be interpreted as not including some of these components or some of these operations, or further including additional components or operations.

[0050] Throughout the specification, when “A and / or B” is described, it means A, B, or A and B unless otherwise specified, and when “C to D” is described, it means C and above and D and below unless otherwise specified.

[0051] Reference will now be made in detail to embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. In the following description, detailed descriptions of well-known functions will be omitted or briefly provided when it is determined that a detailed description would unnecessarily obscure the subject matter of the inventive concept. The described progression of processing steps and / or operations are examples; however, the order of the steps and / or operations is not limited to the order set forth herein and may be changed as is known in the art, except where the steps and / or operations must occur in a specific order. Like reference numerals refer to like elements throughout. The names of the various elements used in the following description have been selected solely for the convenience of writing the specification and may therefore differ from the names used in the actual product.

[0052] Any implementation described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations.

[0053] Furthermore, when any dimension, relative size, etc. is mentioned, it should be understood that even when no relevant description is specified, the numerical value or corresponding information (e.g., level, range, etc.) of the element or feature also includes tolerances or error ranges that may be caused by various factors (e.g., process factors, internal or external influences, noise, etc.). In addition, the term "may" fully encompasses all meanings of the term "can."

[0054] In the description of various embodiments of the present disclosure, when describing a positional relationship, for example, when the positional relationship between two parts is described as "on," "above," "below," and "next to," one or more other parts may be located between the two parts, unless more restrictive terms such as "just" or "directly" are used. For example, when an element or layer is arranged "on" another element or layer, a third element or layer may be interposed therebetween.

[0055] When describing a temporal relationship, when the temporal order is described as, for example, "after," "subsequently," "next," and "before," discontinuities may be included unless more restrictive terms such as "just," "immediately," or "directly" are used.

[0056] Furthermore, unless otherwise specified, when an element or layer is “connected,” “coupled,” or “adhered” to another element or layer, it means that the element or layer may be not only directly connected or adhered to the other element or layer, but also indirectly connected or adhered to the other element or layer, with one or more intermediate elements or layers “disposed” or “interposed” between the elements or layers. This should be understood to mean that the elements may or may not be in direct contact with each other.

[0057] It will be clear to those skilled in the art that various modifications and variations can be made to the embodiments of the present disclosure without departing from the technical concept or scope of the present disclosure. Therefore, the present disclosure is intended to cover modifications and variations of the present disclosure as long as they fall within the scope of the appended claims and their equivalents.

[0058] A display device according to an embodiment may be installed, for example, in front of the front seats of a vehicle to provide the driver and passengers with videos or images required for driving. However, the present disclosure is not limited thereto, and the display device may be used while being carried by a user rather than being installed in the vehicle. Hereinafter, for example, a display device installed in a vehicle will be described.

[0059] Figure 1 is a front view showing a display device according to one embodiment. Figure 2 2 is a rear view illustrating a display device according to an embodiment of the present invention. The display device according to the embodiment may include a display panel 100 , a metal plate 200 , and a first circuit board 300 .

[0060] Video or images may be reproduced on the display panel 100. The video or image to be displayed may be navigation information required for driving, video captured by a camera mounted on the vehicle, or various other contents required by the driver or passengers.

[0061] The metal plate 200 may be disposed behind the display panel 100. The metal plate 200 may be formed thinner to manufacture a slim display panel 100. The metal plate 200 may serve as a heat sink to protect the display panel 100 and dissipate heat generated by the display panel 100 to the outside to cool the display panel 100.

[0062] The metal plate 200 may be made of, for example, aluminum or an alloy material including aluminum.

[0063] The first circuit board 300 may be provided behind the metal plate 200 and electrically connected to the display panel 100. The first circuit board 300 may include a camera, a device for communicating with an external device such as a main control module of a vehicle, a device for driving the display panel 100 so that the display panel 100 reproduces a video or an image, etc., and may be provided with circuits and various other active and passive elements.

[0064] Figure 3 is a side view showing a display device according to one embodiment. Figure 4 4 is an exploded view illustrating a display device according to an embodiment of the present invention. A display device according to an embodiment of the present invention may include a chip on film (COF) 400 .

[0065] The chip on film 400 may have one side electrically connected to the display panel 100 , the other side electrically connected to the first circuit board 300 , and a portion configured to be bent.

[0066] The chip on film 400 can be formed thin and made of a bendable flexible material. The chip on film 400 can electrically connect the display panel 100 to the first circuit board 300. The chip on film 400 can be provided with various active components and passive components, and provided with a driving circuit for driving the display panel 100.

[0067] A driving circuit for driving the display panel 100 may be provided to be dispersed to each of the first circuit board 300 and the chip on film 400. The chip on film 400 may include a driving element 500 for driving the display panel 100. That is, the chip on film 400 may be provided with the driving element 500 forming at least a portion of the driving circuit of the display panel 100.

[0068] Figure 5 is an enlarged view illustrating a portion of a side surface of a display device according to one embodiment. The driving element 500 may be provided on the chip-on-film 400 and may protrude from the chip-on-film 400 .

[0069] The driving element 500 may be configured as an integrated circuit (IC) for controlling the operation of the display device. Since the driving element 500 is provided with various circuit structures for implementing control logic, the driving element 500 may have a certain volume. Therefore, the driving element 500 may be connected to the film chip 400 and may protrude from the film chip 400.

[0070] The display device may include a second circuit board 800 and a flexible circuit board 900. The second circuit board 800 may be disposed behind the display panel 100 to be spaced apart from the first circuit board 300.

[0071] The second circuit board 800 may connect a control unit provided in the vehicle to the first circuit board 300 to supply power to the first circuit board 300. The second circuit board 800 may be provided with various active elements, passive elements, and circuits that play their respective roles.

[0072] The flexible circuit board 900 may electrically connect the first circuit board 300 to the second circuit board 800. The flexible circuit board 900 may be made of a flexible material and may function as a cable.

[0073] The flexible circuit board 900 may be made of a flexible material so that the arrangement position and arrangement shape of the first circuit board 300 and the second circuit board 800 can be freely adjusted. The flexible circuit board 900 may be provided with various active elements, passive elements, and circuits that play their respective roles.

[0074] Since the chip on film 400 and the flexible circuit board 900 are made of a flexible material, the chip on film 400 and the flexible circuit board 900 may be flexibly moved when assembling the display device, thereby improving the convenience of assembly and manufacturing a slim display device.

[0075] In addition, a plurality of light sources may be provided on the display panel 100 to be spaced apart from each other to radiate light to reproduce a video. Such light sources may be provided as light emitting diodes (LEDs) 110, for example.

[0076] The display device may include a polarizer 910 , a front cover 920 , a first adhesive layer 930 , and a protective film 940 .

[0077] Polarizer 910 may be provided in front of display panel 100. Polarizer 910 may convert light radiated from display panel 100 into circularly polarized light. Polarizer 910 may increase outdoor visibility and contrast of a video displayed on display panel 100 by mitigating or preventing reflection of external light.

[0078] The front cover 920 may be disposed in front of the polarizer 910. The front cover 920 may be disposed in front of the display panel 100 to protect the display panel 100. The front cover 920 may be made of a transparent material so that light radiated from the front cover 920 may pass through the front cover 920.

[0079] The front cover 920 may be made of, for example, transparent glass or transparent plastic, but is not limited thereto.

[0080] The front cover 920 may be formed thicker to protect other components located behind it and maintain the rigidity of the entire display device, thereby alleviating or preventing the display device from being easily deformed by external impact.

[0081] The first adhesive layer 930 may be disposed between the front cover 920 and the polarizer 910 and may bond the front cover 920 and the polarizer 910 .

[0082] The first adhesive layer 930 may be provided in the form of a film or a plate and made of an adhesive material. The first adhesive layer 930 may be made of a transparent material having high light transmittance.

[0083] The first adhesive layer 930 may be made of or may include a material having good adhesiveness, such as an optically clear adhesive (OCA), an optically clear resin (OCR), or a pressure sensitive adhesive (PSA).

[0084] A protective film 940 may be provided in front of the front cover 920. The protective film 940 may be formed of a thin film to protect the surface of the front cover 920. However, the protective film 940 is not an essential component of the display device.

[0085] The display device may include a touch input unit 911, a second adhesive layer 950, and a protective layer 960. The touch input unit 911 may be disposed between the display panel 100 and the polarizer 910. The touch input unit 911 may receive user commands and transmit the user commands to the control unit. Of course, the touch input unit 911 may operate electrostatically.

[0086] The protective layer 960 may be disposed behind the display panel 100 and may protect the display panel 100. The protective layer 960 may be made of, for example, glass or a plastic material, but is not limited thereto.

[0087] The second adhesive layer 950 may be disposed between the metal plate 200 and the protective layer 960 and may bond the metal plate 200 and the protective layer 960. The second adhesive layer 950 may be made of a material that is the same as or similar to that of the first adhesive layer 930.

[0088] That is, the second adhesive layer 950 can be provided in the form of a film or a plate and made of an adhesive material. The first adhesive layer 930 can be made of a material having good adhesive strength, or can include a material having good adhesive strength, for example, OCA, OCR or PSA. The second adhesive layer 950 can be made of a transparent material or an opaque material.

[0089] Figure 6 It is a view for the purpose of describing the present invention. Figure 6 Arrows shown in φ indicate external impact applied to the chip-on-film 400 having the driving element 500 and its direction.

[0090] like Figure 6 As shown, in order to protect the driving element 500, the chip on film 400 may be bent so that a protruding surface on which the driving element 500 is mounted is provided in the chip on film 400, thereby alleviating or preventing the chip on film 400 from being exposed to the outside.

[0091] The display device may receive external impact when a vehicle provided with the display device suddenly accelerates or stops, when a user drops the portable display device, or due to various other reasons.

[0092] When an external impact is applied to the chip-on-film 400, the chip-on-film 400 may deform, and thus the driving element 500 may move and collide with other components of the display device. The driving element 500 has a certain volume and thus protrudes from the surface of the chip-on-film 400. For example, the driving element 500 may collide with the rear surface of the first circuit board 300 or the metal plate 200 that the chip-on-film 400 faces.

[0093] Due to such a collision, the driving element 500 may be damaged, and the damage to the driving element 500 may adversely affect the display operation. Therefore, a structure capable of suppressing damage to the driving element 500 due to external impact is required. This will be described in detail below.

[0094] Figure 7 is a view showing a display device having a structure according to one embodiment. Figure 8 It is along Figure 7 Cross-sectional view along line 8-8'.

[0095] As described above, the driving element 500 may protrude toward the first circuit board 300. Therefore, when external impact is applied to the chip-on-film 400 and the driving element 500, the driving element 500 may collide with the first circuit board 300.

[0096] To mitigate or prevent such collision, a relief portion 310 may be formed at a position corresponding to the position where the driving element 500 is disposed on the first circuit board 300. The relief portion 310 may mitigate or prevent the driving element 500 from colliding with the first circuit board 300 even when the driving element 500 moves.

[0097] The relief portion 310 may be provided as a groove 311 or a through hole 312. When the relief portion 310 is formed on the first circuit board 300, the driving element 500 may face the metal plate 200 in the front-rear direction of the display device when the driving element 500 is located on the relief portion 310.

[0098] In one embodiment, the thickness of the first circuit board 300 may be set to be greater than the protruding height of the driving element 500. Therefore, since there is a free space between one end of the driving element 500 and the metal plate 200, the driving element 500 and the metal plate 200 do not collide.

[0099] With this structure, the avoidance portion 310 formed on the first circuit board 300 can suppress the collision of the driving element 500 with the first circuit board 300 and the metal plate 200. Therefore, it is possible to reduce or prevent the driving element 500 of the chip-on-film 400 from being damaged by collision with other components due to external impact, thereby effectively increasing the durability of the display device.

[0100] First, the escape portion 310 provided as the groove 311 will be described. Figure 7 As shown, the avoidance portion 310 may be provided as a groove 311 formed by recessing the end portion of the first circuit board 300 .

[0101] The component facing the driving element 500 may vary depending on the position of the driving element 500 disposed on the chip-on-film 400. The first circuit board 300 may have a smaller area than the metal plate 200 when viewed in the front-rear direction of the display device.

[0102] Therefore, the driving element 500 may be provided at a position adjacent to the boundary point between the first circuit board 300 and the metal plate 200. In this case, the driving element 500 on the chip-on-film 400 deformed by external impact may collide with the boundary point between the first circuit board 300 and the metal plate 200.

[0103] Accordingly, a groove 311 may be formed at the end of the first circuit board 300. Figure 8 The groove 311 can form a space to protect the driving element 500 , thereby reducing or preventing the driving element 500 from colliding with the first circuit board 300 or the metal plate 200 .

[0104] In addition, a plate-shaped adhesive portion 11 may be provided between the metal plate 200 and the first circuit board 300. The adhesive portion 11 may adhere the metal plate 200 and the first circuit board 300, and may be formed of an adhesive having a predetermined thickness.

[0105] A relief structure corresponding to the relief portion 310 of the first circuit board 300 may also be formed on the adhesive portion 11. Since the adhesive portion 11 has a thickness, the driving element 500 and the metal plate 200 may be spaced apart from each other at the relief portion 310, thereby reducing or preventing collision between the driving element 500 and the metal plate 200.

[0106] Therefore, when the height of the driving element 500 is slightly greater, the adhesive portion 11 may be formed slightly thicker to form a sufficient separation distance between the driving element 500 and the metal plate 200 .

[0107] In addition, when no external impact is applied to the film chip 400, the film chip 400 will not be deformed but maintain its original shape. In this case, the driving element 500 can be sufficiently spaced apart from the first circuit board 300, so the driving element 500 can be set not in the groove 311, but can be set at a position spaced apart from the groove 311.

[0108] When an external impact is applied to the chip-on-film 400, the driving element 500 may move to be disposed in the groove 311. When the escape portion 310 to be described below is provided as a through hole 312, the structure is also the same.

[0109] However, in another embodiment, there may be an exception in which the chip on film 400 is adhered to the first circuit board 300. This will be described in detail below.

[0110] Figure 9 is a view showing a display device having a structure according to another embodiment. Figure 10 The cross-sectional structure can be similar to Figure 8 The structure shown. Figure 9 As shown, the avoidance portion 310 may be provided as a through hole 312 formed by penetrating the first circuit board 300 .

[0111] Depending on where the driving element 500 is disposed on the chip on film 400, the driving element 500 may be located facing the first circuit board 300. Therefore, when an external impact is applied to the chip on film 400, the driving element 500 may collide with the first circuit board 300.

[0112] Therefore, a through hole 312 may be formed in the first circuit board 300. Figure 9 The through hole 312 may form a space for protecting the driving element 500 , thereby alleviating or preventing the driving element 500 from colliding with the first circuit board 300 or the metal plate 200 .

[0113] Since the through hole 312 is formed at a position facing the driving element 500 and passes through the first circuit board 300 so that the metal plate 200 is visible, when an external impact is applied to the chip on the film 400, the driving element 500 can be set in the through hole 312 formed in the first circuit board 300, and the driving element 500 and the metal plate 200 can be kept apart from each other, so that the driving element 500 can avoid colliding with the first circuit board 300 and the metal plate 200.

[0114] According to another embodiment, in a state in which the driving element 500 is accommodated in the escape portion 310 , the chip on film 400 may be provided to have at least a portion adhered to the first circuit board 300 .

[0115] When the chip on film 400 is electrically connected to the first circuit board 300 but not adhered thereto, the driving element 500 may not be accommodated in the escape portion 310 formed on the first circuit board 300 if the chip on film 400 is deformed by external impact.

[0116] That is, when the chip on film 400 is greatly deformed due to external impact, the driving element 500 may deviate significantly from its original position and may be damaged due to collision with another portion of the first circuit board 300 or the metal plate 200 other than the avoidance portion 310 .

[0117] Therefore, when the chip on film 400 is bonded to the first circuit board 300 with an adhesive to keep the driving element 500 contained in the space of the avoidance portion 310, even when the chip on film 400 is greatly deformed, the driving element 500 can always be set on the avoidance portion 310, thereby effectively reducing or preventing the driving element 500 from colliding with the first circuit board 300 or the metal plate 200.

[0118] Figure 10 is a view showing a display device having a structure according to still another embodiment. Figure 11 It is along Figure 10 A cross-sectional view along line 11-11'. Figure 11 The arrows shown in ⊂ indicate external impact applied to the chip-on-film 400 and its direction.

[0119] The display device may include a reinforcing plate 600 that is disposed at a position where at least a portion of the reinforcing plate 600 overlaps the driving element 500 behind the chip on film 400 and is adhered to the chip on film 400. The reinforcing plate 600 may be adhered to an outer surface of the chip on film 400, that is, a surface opposite to a surface from which the driving element 500 protrudes, using an adhesive.

[0120] The reinforcing plate 600 is provided in the form of a thin film, but can be provided to have an appropriate thickness so as not to be deformed by external impact. The reinforcing plate 600 can be made of, for example, copper, aluminum, an alloy including copper and aluminum, or stainless steel.

[0121] Although a quadrangular reinforcing plate 600 is shown in the drawings, the reinforcing plate 600 is not limited thereto and may be manufactured in any shape, for example, a circular shape, an elliptical shape, or a polygonal shape.

[0122] Since the reinforcing plate 600 is not deformed by external impacts, it can protect the chip-on-film 400, which is easily deformed by external impacts. Therefore, deformation of the chip-on-film 400 due to external impacts can be reduced or prevented, thereby suppressing the movement of the driving element 500 and reducing or preventing the driving element 500 from colliding with other components.

[0123] Specifically, when an external impact is applied to the portion of the chip-on-film 400 adjacent to the driving element 500, the portion of the chip-on-film 400 adjacent to the driving element 500 may be deformed. In the event of such deformation, the chip-on-film 400 continues to deform even when the driving element 500 is disposed on the escape portion 310, and the driving element 500 may continue to move while being disposed on the escape portion 310 and collide with the first circuit board 300 or the metal plate 200.

[0124] In this case, when the reinforcing plate 600 is provided, the chip on film 400 is not deformed at the portion where the driving element 500 is provided by the reinforcing plate 600 , and thus the movement of the driving element 500 can be suppressed, thereby effectively reducing or preventing damage caused by collision.

[0125] although Figure 11 The case where the escape portion 310 is provided as a groove 311 is shown, but the case where the escape portion 310 is provided as a through hole 312 can also be described similarly to the above.

[0126] The avoidance portion 310 may be provided at a position such that at least a portion of the avoidance portion 310 overlaps with the reinforcing plate 600. The avoidance portion 310 and the reinforcing plate 600 may be provided such that at least a portion of the avoidance portion 310 and the reinforcing plate 600 overlap each other in the front-to-back direction, thereby very effectively reducing or preventing deformation of a portion adjacent to the driving element 500 in the avoidance portion 310 provided on the chip-on-film 400.

[0127] Furthermore, the reinforcing plate 600 may be attached to the chip on film 400 at a portion overlapping the escape portion 310 of the entire chip on film 400 , thereby effectively reducing the area of ​​the reinforcing plate 600 while effectively mitigating or preventing damage to the driving element 500 due to collision.

[0128] Figure 12 is a view showing a display device having a structure according to still another embodiment. Figure 13 It is along Figure 12 A cross-sectional view along line 13-13'.

[0129] The driving element 500 may protrude toward the first circuit board 300. In this case, the display device may include a support pad 700 disposed between the chip on film 400 and the first circuit board 300 to maintain a gap between the driving element 500 and the first circuit board 300.

[0130] When the driving element 500 and the first circuit board 300 are separated, the support pad 700 may be provided in any form. Figure 12 A pair of support pads 700 are shown disposed on both sides of the driving element 500 with the driving element 500 interposed therebetween.

[0131] However, as another embodiment, four support pads 700 disposed on the top, bottom, left, and right sides of the driving element 500 may be provided, or the support pads 700 may be provided in the form of a closed curve surrounding the driving element 500 .

[0132] The support pad 700 can separate the first circuit board 300 from the driving element 500 in the front-to-rear direction to suppress the driving element 500 from colliding with the first circuit board 300 or the metal plate 200 even when an external impact is applied, thereby effectively reducing or preventing damage to the driving element 500 due to collision.

[0133] Depending on the position at which the driving element 500 is disposed on the chip-on-film 400 , the driving element 500 may collide with the first circuit board 300 or the metal plate 200 , or with a boundary between the first circuit board 300 and the metal plate 200 .

[0134] Since the support pad 700 separates the first circuit board 300 and the metal plate 200 from the driving element 500, when Figure 12 While the support pad 700 is provided in the illustrated embodiment, unlike the above-described embodiment, the chip-on-film 400 may be provided at a position directly facing the metal plate 200 .

[0135] Therefore, in the case of an embodiment using the support pad 700 , the driving element 500 does not need to be arranged at a position facing the first circuit board 300 , and thus the chip-on-film 400 and the driving element 500 can be designed more freely.

[0136] The support pad 700 may be provided to be adhered to at least one of the metal plate 200 or the first circuit board 300 .

[0137] As described above, depending on the design, the driving element 500 can be disposed on the metal plate 200 or the first circuit board 300, or on the boundary between the metal plate 200 and the first circuit board 300. Accordingly, the support pad 700 can be adhered to an appropriate position of the metal plate 200 or the first circuit board 300 using an adhesive so that the driving element 500 is spaced apart from the metal plate 200 and the first circuit board 300.

[0138] In another embodiment, the support pad 700 may be adhered to the chip-on-film 400 and disposed to surround the driving element 500 to separate the driving element 500 from the metal plate 200 or the first circuit board 300 .

[0139] When the deformation degree of the chip on film 400 is large due to a large external impact, the driving element 500 may deviate greatly from its original position and may not be protected by the support pad 700, and may be damaged due to collision with the first circuit board 300 or another part of the metal plate 200.

[0140] To solve this problem, as yet another embodiment, the support pad 700 may be adhered to both the chip-on-film 400 and the metal plate 200 and / or the first circuit board 300 .

[0141] That is, the support pad 700 may be provided to have one surface adhered to at least one of the metal plate 200 or the first circuit board 300 and the other surface adhered to the chip-on-film 400 .

[0142] With this structure, the driving element 500 can always be maintained in a state of being spaced apart from the metal plate or the first circuit board 300 in the front-rear direction at a position protected by the support pad 700 .

[0143] Therefore, even when the chip on film 400 is greatly deformed, the driving element 500 is fixed in place by the support pad 700 and does not move, thereby effectively reducing or preventing the driving element 500 from colliding with the first circuit board 300 or the metal plate 200.

[0144] Figure 14 is a view showing a display device having a structure according to still another embodiment. Figure 15 It is along Figure 14 The display device may further include a reinforcing plate 600 in a structure provided with the support pad 700 .

[0145] The display device may include a reinforcing plate 600 that is provided at a position such that at least a portion of the reinforcing plate 600 overlaps the driving element 500 behind the chip on film 400 and is adhered to the chip on film 400. The reinforcing plate 600 may be adhered to an outer surface of the chip on film 400, that is, a surface opposite to a surface from which the driving element 500 protrudes, using an adhesive.

[0146] The structure and effect of the reinforcing plate 600 are similar to those mentioned above. Figure 10 and Figure 11 The structures and effects described are the same or similar.

[0147] According to one embodiment, a display device may include: a display panel that reproduces a video on the display panel; a metal plate that is disposed behind the display panel; a first circuit board that is disposed behind the metal plate and electrically connected to the display panel; a chip on film (COF) that has one side electrically connected to the display panel, the other side electrically connected to the first circuit board, and a portion that is configured to be bent; a driving element that is disposed on the chip on film and protrudes from the chip on film; and a reinforcing plate that is disposed at a position so that at least a portion thereof overlaps with the driving element behind the chip on film and is adhered to the chip on film.

[0148] The driving element may protrude toward the first circuit board, and the escape portion may be formed at a position corresponding to a position where the driving element is provided on the first circuit board.

[0149] The escape portion may be provided as a groove formed by recessing an end portion of the first circuit board.

[0150] The escape portion may be provided as a through hole formed by penetrating the first circuit board.

[0151] The chip on film may be configured to have at least a portion adhered to the first circuit board in a state in which the driving element is accommodated in the escape portion.

[0152] The driving element may protrude toward the first circuit board, and the display device may include a support pad disposed between the chip on film and the first circuit board to maintain a gap between the driving element and the first circuit board.

[0153] The support pad may be configured to have one surface adhered to at least one of the metal plate or the first circuit board.

[0154] The support pad may be configured to have another surface to which the chip adheres on the membrane.

[0155] The escape portion may be provided at a position such that at least a portion thereof overlaps with the reinforcing plate.

[0156] The display device may include: a second circuit board disposed behind the display panel to be spaced apart from the first circuit board; and a flexible circuit board electrically connecting the first circuit board to the second circuit board.

[0157] The display device may include: a polarizer disposed in front of the display panel; a front cover disposed in front of the polarizer; a first adhesive layer disposed between the front cover and the polarizer; and a protective film disposed in front of the front cover.

[0158] According to another embodiment, a display device may include: a display panel on which a video is reproduced; a metal plate arranged behind the display panel; a first circuit board arranged behind the metal plate and electrically connected to the display panel; a chip on film having one side electrically connected to the display panel, the other side electrically connected to the first circuit board, and a portion arranged to be bent; and a driving element arranged on the chip on film and protruding from the chip on film toward the first circuit board, wherein a avoidance portion may be formed at a position corresponding to the position where the driving element is arranged on the first circuit board.

[0159] The escape portion may be provided as a groove formed by recessing an end portion of the first circuit board.

[0160] The escape portion may be provided as a through hole formed by penetrating the first circuit board.

[0161] The display device may include a reinforcing plate that is provided at a position such that at least a portion thereof overlaps the driving element behind the chip-on-film and is adhered to the chip-on-film.

[0162] The chip on film may be configured to have at least a portion adhered to the first circuit board in a state in which the driving element is accommodated in the escape portion.

[0163] According to another embodiment, a display device may include: a display panel on which a video is reproduced; a metal plate disposed behind the display panel; a first circuit board disposed behind the metal plate and electrically connected to the display panel; a chip on film having one side electrically connected to the display panel, the other side electrically connected to the first circuit board, and a portion configured to be bent; a driving element disposed on the chip on film and protruding from the chip on film toward the first circuit board; and a support pad disposed between the chip on film and the first circuit board to maintain a gap between the driving element and the first circuit board.

[0164] The support pad may be configured to have one surface adhered to at least one of the metal plate or the first circuit board.

[0165] The support pad may be configured to have another surface to which the chip adheres on the membrane.

[0166] The display device may include a reinforcing plate that is provided at a position such that at least a portion thereof overlaps the driving element behind the chip-on-film and is adhered to the chip-on-film.

[0167] Since the reinforcing plate is not deformed by external impacts, it can protect the chip-on-film, which is easily deformed by external impacts. Therefore, by reducing or preventing deformation of the chip-on-film due to external impacts, the movement of the driving element can be suppressed, which can reduce or prevent the driving element from colliding with other components.

[0168] In addition, in the display device according to the present disclosure, a relief portion may be formed at a position corresponding to the position where the driving element is provided on the first circuit board. Even when the driving element moves, the relief portion may reduce or prevent the driving element from colliding with the first circuit board.

[0169] Therefore, it is possible to alleviate or prevent the driving elements of the chip-on-film from being damaged by colliding with other components due to external impact, thereby effectively increasing the durability of the display device.

[0170] In addition, the display device according to the present disclosure may include a support pad disposed between the chip-on-film and the first circuit board to maintain a gap between the driving element and the first circuit board.

[0171] The support pad can separate the first circuit board from the driving element in the front-rear direction to suppress the driving element from colliding with the first circuit board or the metal plate even when an external impact is applied, thereby effectively reducing or preventing damage to the driving element due to collision.

[0172] The specific effects as well as the above-described effects are described together with the following description of details for implementing the present disclosure.

[0173] Although the present disclosure has been described above with reference to the exemplary drawings, the present disclosure is not limited to the embodiments and drawings disclosed in the specification, and it is obvious that those skilled in the art can make various modifications within the scope of the technical concept of the present disclosure. In addition, even if the operational effects of the configurations according to the present disclosure are not explicitly described in the description of the embodiments of the present disclosure, it goes without saying that the effects that can be predicted by the corresponding configurations should also be recognized.

Claims

1. A display device, comprising: a display panel on which a video is reproduced; a metal plate, the metal plate being arranged behind the display panel; a first circuit board disposed behind the metal plate and electrically connected to the display panel; a chip on film having one side electrically connected to the display panel, another side electrically connected to the first circuit board, and a portion configured to be bent; a driving element disposed on the chip-on-film and protruding from the chip-on-film; as well as A reinforcing plate is provided at a position such that at least a portion of the reinforcing plate overlaps the driving element behind the chip-on-film and is adhered to the chip-on-film.

2. The display device according to claim 1, wherein The driving element protrudes toward the first circuit board, and An escape portion is formed at a position corresponding to a position where the driving element is provided on the first circuit board.

3. The display device according to claim 2, wherein The escape portion is provided as a groove formed by recessing an end portion of the first circuit board.

4. The display device according to claim 2, wherein The escape portion is provided as a through hole formed by penetrating the first circuit board.

5. The display device according to claim 2, wherein The chip-on-film is configured to have at least a portion adhered to the first circuit board in a state in which the driving element is accommodated in the escape portion. The display device according to claim 1 , wherein: The driving element protrudes toward the first circuit board, and The display device includes a support pad disposed between the chip-on-film and the first circuit board to maintain a gap between the driving element and the first circuit board.

7. The display device according to claim 6, wherein The support pad is configured to have one surface adhered to at least one of the metal plate or the first circuit board.

8. The display device according to claim 7, wherein The support pad is configured to have the other surface of the chip adhered to the membrane.

9. The display device according to claim 3, wherein The escape portion is provided at a position such that at least a portion of the escape portion overlaps the reinforcing plate.

10. The display device according to claim 1, comprising: a second circuit board, the second circuit board being arranged behind the display panel and spaced apart from the first circuit board; as well as A flexible circuit board electrically connects the first circuit board to the second circuit board.

11. The display device according to claim 1, comprising: a polarizer, the polarizer being disposed in front of the display panel; a front cover, the front cover being arranged in front of the polarizer; a first adhesive layer disposed between the front cover and the polarizer; and A protective film is provided in front of the front cover.

12. A display device, comprising: a display panel on which a video is reproduced; a metal plate, the metal plate being arranged behind the display panel; a first circuit board disposed behind the metal plate and electrically connected to the display panel; a chip on film having one side electrically connected to the display panel, another side electrically connected to the first circuit board, and a portion configured to be bent; as well as a driving element provided on the chip-on-film and protruding from the chip-on-film toward the first circuit board, Wherein, an escape portion is formed at a position corresponding to the position where the driving element is arranged on the first circuit board.

13. The display device according to claim 12, wherein The escape portion is provided as a groove formed by recessing an end portion of the first circuit board.

14. The display device according to claim 12, wherein The escape portion is configured as a through hole formed by penetrating the first circuit board. 15 . The display device according to claim 12 , comprising a reinforcing plate provided at a position such that at least a portion of the reinforcing plate overlaps the driving element behind the chip on film and adhered to the chip on film.

16. The display device according to claim 12, wherein The chip-on-film is configured to have at least a portion adhered to the first circuit board in a state in which the driving element is accommodated in the escape portion.

17. A display device, comprising: a display panel on which a video is reproduced; a metal plate, the metal plate being arranged behind the display panel; a first circuit board disposed behind the metal plate and electrically connected to the display panel; a chip on film having one side electrically connected to the display panel, another side electrically connected to the first circuit board, and a portion configured to be bent; a driving element disposed on the chip-on-film and protruding from the chip-on-film toward the first circuit board; as well as A support pad is provided between the chip on film and the first circuit board to maintain a gap between the driving element and the first circuit board.

18. The display device according to claim 17, wherein The support pad is configured to have one surface adhered to at least one of the metal plate or the first circuit board.

19. The display device according to claim 18, wherein The support pad is configured to have the other surface of the chip adhered to the membrane. 20 . The display device according to claim 17 , comprising a reinforcing plate provided at a position such that at least a portion of the reinforcing plate overlaps the driving element behind the chip on film and adhered to the chip on film.

Images