WO2019039645A1 - Back cover for display device and display device including same - Google Patents

Back cover for display device and display device including same Download PDF

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Publication number
WO2019039645A1
WO2019039645A1 PCT/KR2017/010719 KR2017010719W WO2019039645A1 WO 2019039645 A1 WO2019039645 A1 WO 2019039645A1 KR 2017010719 W KR2017010719 W KR 2017010719W WO 2019039645 A1 WO2019039645 A1 WO 2019039645A1
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WO
WIPO (PCT)
Prior art keywords
pulp
back cover
pulp layer
display device
display panel
Prior art date
Application number
PCT/KR2017/010719
Other languages
French (fr)
Korean (ko)
Inventor
조성하
Original Assignee
희성전자 주식회사
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Publication of WO2019039645A1 publication Critical patent/WO2019039645A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/64—Constructional details of receivers, e.g. cabinets or dust covers
    • H04N5/65—Holding-devices for protective discs or for picture masks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/10—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of wood
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/02—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board the layer being formed of fibres, chips, or particles, e.g. MDF, HDF, OSB, chipboard, particle board, hardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/04—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/04—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B21/042—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material of wood
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/04—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by at least one layer folded at the edge, e.g. over another layer ; characterised by at least one layer enveloping or enclosing a material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133314—Back frames
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/026—Wood layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—Synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
    • B32B2457/202—LCD, i.e. liquid crystal displays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
    • B32B2457/204—Plasma displays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
    • B32B2457/206—Organic displays, e.g. OLED

Definitions

  • the present invention relates to a display device, and more particularly, to a back cover for holding and supporting a display panel on a plate-shaped plate, and a display device having the same.
  • a display device is a device for receiving and displaying a video signal and includes a TV, a monitor, a billboard, a smart phone, and the like.
  • a display device As means for displaying an image, an OLED (Organic Light Emitting Display) A liquid crystal display device (LCD), and a plasma display panel (PDP).
  • OLED Organic Light Emitting Display
  • LCD liquid crystal display device
  • PDP plasma display panel
  • a display device which minimizes the number of parts by supporting the display panel with only the back cover has been introduced, and the back cover becomes more important as the exterior material for protecting the outside of the display device.
  • the back cover since the thickness of the display panel is only a few millimeters, the back cover is very thin, and sufficient strength is required to stably support the large-sized panel and protect the panel from external impact. Therefore, a back cover for a display device is mainly made of a metal material such as aluminum so as to exhibit sufficient mechanical rigidity, and in recent years, back covers of various materials and structures have been developed.
  • Korean Patent No. 10-1472340 discloses a back cover of an aluminum composite material (ACM) developed by the present applicant.
  • ACM aluminum composite material
  • the back cover of the above-mentioned prior art uses a resin as a core layer and a skin layer made of aluminum, which is relatively light and has high strength.
  • the ACM back cover is disadvantageous in that the ACM back cover is made slimmer due to the core layer, and it is difficult to process the side edge portion, so that a separate middle frame must be provided.
  • wood has various and unique patterns as its own and is widely used as a material for building materials and furniture, and is also used as a case member for various electronic products.
  • Korean Registered Utility Model No. 20-0419409 discloses a wooden case of a video terminal device
  • Japanese Laid-Open Patent Application No. 2012-100033A discloses a cover of a portable terminal made of wood.
  • the case or the cover of the wooden material does not exhibit sufficient rigidity and can not be applied to a display device such as a TV structure that is large in screen size, slimness and weight, and has not been used as a cover member of a large- It is true.
  • Patent Document 1 Korean Registered Patent No. 10-1472340 (Registered, Display Apparatus)
  • Patent Document 2 Korean Registered Utility Model No. 20-0419409 (registered on June 13, 2006, video terminal device wooden case)
  • Patent Document 3 Japanese Laid-Open Patent Publication No. 2012-100034 (2012.05.24 Open, portable terminal having detachable cover)
  • the present invention is characterized in that a reinforcing pulp layer in which chemically treated pulp such as sulfuric acid-treated pulp or phenol-impregnated pulp is pressed and cured is provided on both sides of a metal plate, a flame-resistant pulp layer subjected to a phosphate treatment, Layer can be achieved by a back cover on which a pressed pulp layer of a pressure-hardened high-density wood material is formed.
  • the back cover of the present invention is slim and has high strength because a high-density pressed pulp layer is formed on a plate surface of a metal material, and can be advantageously applied to a display device of a large-screen, slim and lightweight.
  • the back cover of the present invention has an effect that the resin-impregnated pulp layer adorns the outer surface to decorate the appearance of the display device with various patterns and colors.
  • the back cover of the present invention can expose the metal plate to the outside of the pressed pulp layer to easily process the edge portion of the display device.
  • FIG. 1A and 1B are an exploded perspective view and a cross-sectional view showing a main configuration of a display device according to an embodiment of the present invention
  • FIGS. 2A and 2B are exploded perspective views showing a main configuration of a display device according to another embodiment of the present invention.
  • 3A is a cross-sectional view showing a detailed configuration of a back cover according to the first embodiment of the present invention
  • FIG. 3B is a sectional view showing the detailed structure of the back cover according to the second embodiment of the present invention.
  • 3C is a cross-sectional view showing a detailed configuration of a back cover according to a third embodiment of the present invention.
  • FIGS. 4A and 4B are a perspective view and a cross-sectional view illustrating another example of a display device to which a back cover according to an embodiment of the present invention is applied.
  • 5A and 5B are cross-sectional views illustrating a back cover and a display device according to a fourth embodiment of the present invention.
  • the back cover of the present invention can be applied to an external housing such as a back cover in a mobile display device such as a smart phone as well as a large-screen display device such as a TV, a monitor, a billboard and the like.
  • a display device according to an embodiment of the present invention will be schematically described, and then a detailed structure of the back cover will be described according to each embodiment.
  • FIGS. 1A and 1B are exploded perspective views showing a display device according to an embodiment of the present invention and an engaging cross-sectional view, respectively, showing a display device having a structure with a middle frame, A display device of a structure in which a middle frame is removed as an exploded perspective view and an engagement sectional view showing the device is shown.
  • a display device includes a display panel 200, a back cover 100 coupled to the back surface of the display panel 200, a display panel 200 (Not shown).
  • the display panel 200 is a core part for displaying an image on a display device, and may include various types of display devices such as an OLED panel, a liquid crystal panel, and a plasma panel, and may include a backlight unit depending on the type.
  • the display panel 200 is coupled to the front surface of the back cover 100 and the image is controlled by the control module coupled to the back surface of the back cover 100.
  • the back cover 100 supports the display panel 200 coupled to the front surface and functions as a back case of the display device.
  • the back cover 100 has a rectangular plate shape corresponding to the shape of the display device, and may have a predetermined curvature when applied to a curved display device. Also, a plurality of pem-nuts may be coupled to the back cover 100 for fastening the bracket or the like.
  • the middle frame 300 has a structure in which the display panel 200 and the back cover 100 are coupled to each other while shielding the side surfaces thereof to decorate the outer edge of the edge of the display device.
  • the display panel 200 and the back cover 100 are coupled to the front and back surfaces of the inwardly protruding seating ribs and the display panel 200 and the back cover 100 are coupled to each other. May be coupled to the middle frame 300 via an adhesive member 400 such as a foam pad or double-sided tape.
  • a display apparatus includes a display panel 200 and a back cover 100 coupled to a back surface of the display panel 200.
  • the back cover 100 has a protrusion protruding from the front edge of the back cover 100.
  • the protrusion may form a rim portion 100a that shields the side of the display panel 200 so that the middle frame may be removed.
  • the rim portion 100a may be formed by a process in which the edge of the back cover is folded, a part of the compression plate constituting the back cover is cut, or the end portion of the core plate constituting the back cover is folded.
  • the display device according to another embodiment of the present invention is formed by decorating the outer surface of the edge portion of the back cover 100, so that the middle frame can be removed as compared with the embodiment of FIG. 1, Thereby simplifying the assembling process and reducing the manufacturing cost.
  • the back cover should have more excellent rigidity.
  • the display device must have a back cover for supporting or decorating the display device on the back surface.
  • the back cover since the back cover must stably support each configuration of the display device, the display device must exhibit excellent rigidity, It should exhibit characteristics favorable for slimming.
  • 3A to 3C are enlarged cross-sectional views showing a detailed configuration of a back cover according to various embodiments of the present invention.
  • a back cover 100 includes a pressurized pulp layer 120 in which a plurality of pulp layers are press-bonded to both sides of a core plate 110 .
  • the back cover 100 includes a core plate 110, a reinforcing pulp layer 130 which is press-bonded to both sides of the core plate 110, and a patterned pulp layer 130 which is press-bonded to both sides of the reinforcing pulp layer 130.
  • a flame-resistant pulp layer 150 may further intervene between the reinforcing pulp layer 130 and the patterned pulp layer 140.
  • the core plate 110 functions as a main plate that maintains the rigidity of the back cover 100.
  • the core plate 110 prevents the flattened deformation, warping, or distortion of the pressed pulp layer 120, Thereby protecting the outer appearance of the cover 100.
  • the core plate 110 is made of a metal material having excellent rigidity and can be made of materials such as nickel, carbon steel, molybdenum, aluminum, titanium, tungsten, stainless steel, GI and the like.
  • the core plate 110 may be composed of a functional plate such as tempered glass or reinforced plastic, which exhibits excellent rigidity while gradually becoming lightweight.
  • the core plate 110 has a sheet or film shape having a thickness of about 1.2 mm or less.
  • the reinforcing pulp layer 130 is pressed and cured on the surface of the core plate 110 to reinforce the rigidity of the back cover 100.
  • the reinforcing pulp layer 130 of the present invention may be composed of a pulp layer in which chemically treated pulp is a pressure-cured hardened paper, and the chemically treated pulp may, for example, be a sulfuric acid treated pulp after being dipped in sulfuric acid and then alkali degreased.
  • the sulfuric acid-treated pulp exhibits excellent heat resistance and hardly exhibits thermal expansion, and is resistant to external forces, so that it is advantageous in preventing warpage deformation.
  • the chemically treated pulp may be composed of a phenol impregnated pulp impregnated with a phenol resin obtained by heat condensation of phenols and formaldehyde. Phenol impregnated pulp exhibits good electrical and mechanical properties, exhibits excellent heat resistance and flame retardancy, and exhibits excellent adhesion between pulp layers.
  • the reinforcing pulp layer 130 may be composed of a single layer, but it is composed of multiple layers of two or more layers to reinforce the rigidity of the core plate 110.
  • the patterned pulp layer 140 serves to decorate the outer surface of the back cover 100.
  • the patterned pulp layer 140 is composed of a pulp layer impregnated with a thermosetting resin
  • the patterned pulp layer 140 of the present invention is composed of a melamine impregnated pulp impregnated with a melamine resin obtained by reacting melamine with formaldehyde.
  • the melamine-impregnated pulp has an advantage of being able to display a unique pattern printed on the pulp surface by a colorless transparent melamine resin to the outside, It exhibits water resistance and heat resistance, and is strong against external moisture and heat. Accordingly, the back cover 100 can express various aspects of the appearance of the display device by the pattern formed on the melamine-impregnated pulp surface of the patterned pulp layer 140.
  • the flame-repelling pulp layer 150 functions to make the pressed pulp layer 120 made of a wood material have flame retardancy from the heat generated in the display device or the fire generated from the outside. Each of the pulp layers pressed to a thin thickness may be somewhat vulnerable to heat due to fire or the like and there is a risk that the pulp layers are damaged due to the high temperature heat generated in the display device.
  • the flame-retardant pulp layer 150 may be composed of pulp treated with various kinds of flame retardants, for example, phosphate-treated flame-retardant pulp.
  • the back cover 100 having the above-described structure can be integrally formed by pressing and curing sulfuric acid-treated pulp, phenol resin pulp, phosphate-impregnated pulp, and melamine-impregnated pulp sequentially on both sides of the metal plate under high temperature and high pressure conditions have. At this time, the compressed pulp layer 120 is squeezed so as to have more than 1.35kg / dm 3 density. Also, it is preferable that the pressed pulp layer 120 is symmetrical on both sides with the core material plate 110 as a center. When the pressed pulp layer 120 is asymmetric, a flexural deformation due to a difference in thermal expansion may occur during the pressing hardening process at a high temperature.
  • the reinforcing pulp layer 130 composed of a plurality of layers can be laminated by mixing the sulfuric acid-treated pulp and the phenolic resin pulp, and since the sulfuric acid-treated pulp has a somewhat weak tackiness, the hotmelt film or the adhesive layer 131 to the metal plate or other resin-impregnated pulp.
  • the back cover 100 has a multi-layer structure of the core plate 110, and further reinforcing pulp layer 130 is interposed between the core plates 110.
  • the core plate 110 is composed of a pair of the upper core plate 110 and the lower core plate 110, and the upper core plate 110 and the lower core plate 110 are made of the reinforcing pulp layer 130, As shown in Fig. At this time, the reinforcing pulp layer 130 may include a single layer, and more than two layers may be interposed.
  • the reinforcing pulp layer 130 and the patterned pulp layer 140 are formed on the outer surface of the upper and lower core plates 110 and the reinforcing pulp layer 130 and the patterned pulp layer 130 may be further interposed between the flame-retardant pulp layers 150.
  • the back cover 100 of the second embodiment has a symmetrical structure around the center reinforcing pulp layer 130 and is provided with a pair of core plates 110 and the core plate 110 with sulfuric acid or phenol impregnated Reinforced pulp layer 130 may intervene to exhibit more excellent rigidity.
  • the back cover 100 includes a pair of core plates 110 forming the outside of the back cover 100, a reinforcing pulp layer 130 having a multi- So as to form the inside of the back cover 100. That is, the back cover 100 has a structure in which a multi-layer reinforcing pulp layer 130 is press-cured inside a pair of core plates 110.
  • the reinforcing pulp layer 130 has a symmetrical structure with respect to the direction of the core plate 110 and reinforces the rigidity of the pair of core plates 110.
  • the core plate 110 is configured to maintain the rigidity of the back cover 100 and at the same time to perform the heat radiation function of the display panel.
  • at least one core plate 110 is made of a metal plate having excellent thermal conductivity, and may be made of an aluminum plate, for example. Accordingly, the heat dissipation characteristics of the back cover made of the high-density pressed pulp layer may be somewhat deteriorated due to the wood material, but the heat dissipation characteristic can be improved because the metal plate having excellent thermal conductivity is formed as in the sixth embodiment.
  • the back cover according to the embodiment of the present invention is characterized in that at least one selected from sulfuric acid-treated pulp and phenol-impregnated pulp is compression-cured to form a reinforcing layer on a metal or glass plate, Characterized in that the impregnated pulp and the melamine impregnated pulp are pressed and cured to form a skin layer.
  • Experimental Example 1 Five layers of phenol-impregnated pulp were laminated in a pair of aluminum plates each having a thickness of 0.5 mm.
  • Experimental Example 2 two layers of sulfuric acid-treated pulp and one layer Sulfuric acid treated pulp were laminated, and each pulp layer was pressed and thermally cured under predetermined conditions. Five experiments were repeated in each experimental example, and the results are shown in Table 1 below.
  • the cover plate (Experimental Example 1) in which the phenolic pressure pulp was bonded to the metal plate surface exhibited a relatively good physical property due to a flexural deformation within 10 mm and a thermal expansion coefficient of 40 x 10 -6 or less
  • the cover plate (Experimental Example 2) to which the sulfuric acid-treated pulp (Experimental Example 2) was bonded the flexural deformation within 3 mm and the thermal expansion coefficient of 20 x 10 -6 or less exhibited significantly improved physical properties And the like.
  • the sulfuric acid-treated pulp alone is press-cured on the surface of the core material plate of the metal material or the pressure-hardened back cover mixed with sulfuric acid-treated pulp and phenol impregnated pulp exhibits excellent rigidity even with a thin thickness And can be advantageously applied to a large-screen and slim display device.
  • the metal plate constituting the core plate has a thickness of 1.2 mm or less, and the sulfuric acid-treated pulp, phenol impregnated pulp, It is preferred that the treated pulp and the melamine impregnated pulp are laminated in approximately 11 to 34 layers and pressed and cured to a thickness of 2 to 8 mm.
  • the thickness of the metal plate exceeds 1.2 mm, the rigidity is excellent, but it is disadvantageous in that it is relatively light and slim.
  • the rigidity of the back cover can not be sufficiently reinforced, , It becomes disadvantageous to slim down.
  • FIGS. 4A and 4B are cross-sectional views illustrating a back cover according to a fourth embodiment of the present invention and a display device to which the back cover is applied.
  • the back cover according to the fourth embodiment of the present invention includes a core layer plate 110 and a core layer plate 110 formed on both sides of the core layer plate 110, Thereby forming an exposed portion 110a. That is, the pressed pulp layer 120 composed of a plurality of functional pulp layers is formed by pressing and curing both surfaces of the core plate 110 while exposing the edges of the core plate 110 with a predetermined width. At this time, when the core plate 110 is composed of a plurality of layers, one of the core plates forms the exposed portion 110a.
  • the back cover 100 is folded so that the exposed portion 110a of the core plate 110 exposed to the outside of the pressed pulp layer 120 protrudes to one side as shown in FIG. Thereby forming a receiving space therein.
  • the display panel 200 is coupled to the back cover 100 through the adhesive member 400 in the accommodation space and the exposed portion 110a of the core plate 110 is folded to the front, And a rim portion 100a for decorating the side surface. Therefore, the display device can provide a unique appearance of the metal material on the front and side surfaces by the core plate.
  • the rim portion 100a may be formed by folding, bending, curling, or hemming the exposed portion 110a of the core plate 110.
  • the core material plate 110 is made of a metal material and the end portion thereof is sharp, a surface processing process such as diamond wheel cutting should be applied when the edge portion is bent in an 'L' shape.
  • the rim portion 100a is formed by a curling or hemming process, the sharp end portion faces inward, and the surface machining process can be omitted.
  • the rim portion 100a to which the curling or the hemming process is applied has a double structure of the inner and outer plates, the inner end of the rim portion 100a elastically presses the side surface of the display panel, thereby more stably fixing the display panel.
  • FIGS. 5A and 5B are a perspective view and a cross-sectional view illustrating another example of a display device to which a back cover according to an embodiment of the present invention is applied.
  • the back cover 100 according to the embodiment of the present invention may function as a back cover for supporting the display panel and a stand for supporting the display device on the floor. That is, the back cover 100 is composed of a stand-integrated type plate.
  • the back cover 100 includes a panel 100-1 in the form of a rectangular plate for supporting the display panel 200, A connecting portion 100-2 extending downward while bending the lower end at a predetermined angle and a receiving portion 100-3 extending while the end of the connecting portion 100-2 is bent in a horizontal direction.
  • the panel unit 100-1 is configured to support and support the display panel 200, and has a rectangular shape corresponding to the display panel.
  • the display panel 200 may be directly coupled to the front surface of the panel unit 100-1 or may be coupled to the front surface of the panel unit 100-1 via the middle frame 300.
  • the connecting portion 100-2 connects the panel portion 100-1 and the receiving portion 10-3 and is formed by bending a lower end portion of the panel portion 100-1 in the shape of a square plate, (I.e., the display panel direction) of the display panel 100-1.
  • the receiving unit 100-3 is configured to stably place the display device on the floor of the ground.
  • the receiving unit 100-3 is formed by bending the end portion of the connecting unit 100-2 in the reverse direction, And is bent in the horizontal direction.
  • the back cover 100 having the above-described structure can be formed by cutting and bending a plate-shaped cover plate on which the pressed pulp layer 120 of various functions is press-bonded to the core plate 110. At this time, the bending process may be performed by a heat press press or a thermal bending method.

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Abstract

The present invention relates to a back cover for receiving and supporting a display panel on the front surface of a flat plate thereof and a display device including the same. The back cover of the present invention comprises a high-density wooden compressed pulp layer formed by compressing and curing a reinforced pulp layer, a phosphate-treated fireproofing pulp layer, and a melamine resin-impregnated pattern pulp layer on each of both surfaces of a metal plate, the reinforced pulp layer being formed by compressing and curing a chemically treated pulp, such as sulfuric acid-treated pulp or phenol-impregnated pulp. The back cover of the present invention has a high-density compressed pulp layer formed on the surface of a metal plate to make the same slim and substantially rigid, and thus can be advantageously applied to a large-screen, slim, and lightweight display device.

Description

디스플레이 장치용 백 커버 및 이를 구비하는 디스플레이 장치Back cover for display device and display device having same
본 발명은 디스플레이 장치에 관한 것으로, 더욱 상세하게는 판 상의 플레이트 전면에 디스플레이 패널을 수용하면서 지지하는 백 커버와 이를 구비하는 디스플레이 장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device, and more particularly, to a back cover for holding and supporting a display panel on a plate-shaped plate, and a display device having the same.
일반적으로, 디스플레이 장치는 영상 신호를 전달받아 표시하는 장치로, TV, 모니터, 광고판, 스마트 폰 등이 이에 속하며, 영상을 표시하기 위한 수단으로 유기발광장치(OLED : Organic Light Emitting Display), 액정표시장치(LCD : Liquid Crystal Display Device), 플라즈마표시장치(PDP : Plasma Display Panel) 등 다양한 장치가 이용되고 있다.2. Description of the Related Art Generally, a display device is a device for receiving and displaying a video signal and includes a TV, a monitor, a billboard, a smart phone, and the like. As means for displaying an image, an OLED (Organic Light Emitting Display) A liquid crystal display device (LCD), and a plasma display panel (PDP).
최근에는 정보화 사회가 발전함에 따라 디스플레이 장치에 대한 요구도 다양한 형태로 변화하고 있으며, 점차 경량화, 대형화 및 슬림화되고 있다. 특히, TV에 적용되는 디스플레이 장치의 경우 대형 디스플레이 장치에 대한 수요가 증가함에 따라, 화질의 고품위화 및 고선명화와 함께 TV 구조체의 경량화, 슬림화 및 심미감에 대한 요구가 증가하고 있다.In recent years, as the information society has developed, demands for display devices have changed in various forms, and they are gradually becoming lighter, larger, and slimmer. Particularly, in the case of a display device applied to a TV, as the demand for a large display device increases, the demand for a lightweight, slimmer, and aesthetic feeling of a TV structure is increasing along with a higher quality image and a higher definition.
이러한 요구에 대응하여 최근에는 백 커버만으로 디스플레이 패널을 지지하여 부품 수를 최소로 하는 디스플레이 장치도 소개되고 있으며, 백 커버는 디스플레이 장치의 외부를 보호하는 외장재로서 그 역할이 더욱 중요해진다. 특히, OLED의 경우 디스플레이 패널의 두께가 수 mm에 불과하기 때문에 백 커버도 매우 얇으면서 대면적인 패널을 안정적으로 지지하고, 외부 충격으로부터 패널을 보호할 수 있을 정도의 충분한 강도가 요구되고 있다. 따라서 디스플레이 장치용 백 커버는 충분한 기계적 강성을 나타내도록 알루미늄과 같은 금속 소재가 주로 사용되며, 최근에는 다양한 소재와 구조의 백 커버가 개발되고 있다.In response to this demand, recently, a display device which minimizes the number of parts by supporting the display panel with only the back cover has been introduced, and the back cover becomes more important as the exterior material for protecting the outside of the display device. Particularly, in the case of OLED, since the thickness of the display panel is only a few millimeters, the back cover is very thin, and sufficient strength is required to stably support the large-sized panel and protect the panel from external impact. Therefore, a back cover for a display device is mainly made of a metal material such as aluminum so as to exhibit sufficient mechanical rigidity, and in recent years, back covers of various materials and structures have been developed.
일 예로, 한국등록특허 10-1472340호에는 본 출원인에 의하여 개발된 고강도 알루미늄 수지 복합소재(Aluminum Composite Material, 이하 'ACM'이라 함)의 백 커버가 소개되어 있다. 상기 선행문헌의 백 커버는 코어층으로 수지를 이용하고 스킨층이 알루미늄으로 구성되어 상대적으로 가벼우면서 높은 강도를 나타낸다. 그러나 상기 ACM 백 커버는 코어층에 의하여 슬림화에 불리한 점이 있으며, 측면 테두리부의 가공이 어려워 별도의 미들 프레임이 반드시 구비되어야 하는 단점이 있다.For example, Korean Patent No. 10-1472340 discloses a back cover of an aluminum composite material (ACM) developed by the present applicant. The back cover of the above-mentioned prior art uses a resin as a core layer and a skin layer made of aluminum, which is relatively light and has high strength. However, the ACM back cover is disadvantageous in that the ACM back cover is made slimmer due to the core layer, and it is difficult to process the side edge portion, so that a separate middle frame must be provided.
한편, 목재는 그 특성상 금속이나 유리와 달리 자체로서 다양하고 특이한 문양을 나타내어 건축재나 가구 등의 소재로 널리 사용되고 있으며, 각종 전자제품들의 케이스 부재로도 적용되고 있다. 일 예로, 한국등록실용신안 20-0419409호에는 영상 단말 장치의 목재 케이스가 소개되고, 일본공개특허 2012-100033A에는 목재 재질의 휴대 단말기의 커버가 소개되어 있다. 그러나 상기 목재 재질의 케이스나 커버는 충분한 강성을 나타내지 못하고, TV 구조체와 같이 대화면, 슬림화 및 경량화의 디스플레이 장치에는 적용될 수 없는 구조로서, 현재까지 대화면 및 슬림형 디스플레이 장치의 커버 부재로는 이용되지 못하고 있는 실정이다.On the other hand, unlike metal or glass, wood has various and unique patterns as its own and is widely used as a material for building materials and furniture, and is also used as a case member for various electronic products. For example, Korean Registered Utility Model No. 20-0419409 discloses a wooden case of a video terminal device, and Japanese Laid-Open Patent Application No. 2012-100033A discloses a cover of a portable terminal made of wood. However, the case or the cover of the wooden material does not exhibit sufficient rigidity and can not be applied to a display device such as a TV structure that is large in screen size, slimness and weight, and has not been used as a cover member of a large- It is true.
선행기술문헌Prior art literature
(특허문헌 1) 한국등록특허 10-1472340호(2014-12.08.등록, 디스플레이 장치)(Patent Document 1) Korean Registered Patent No. 10-1472340 (Registered, Display Apparatus)
(특허문헌 2) 한국등록실용신안 20-0419409호(2006.06.13.등록, 영상단말장치 목재 케이스)(Patent Document 2) Korean Registered Utility Model No. 20-0419409 (registered on June 13, 2006, video terminal device wooden case)
(특허문헌 3) 일본공개특허 2012-100034호(2012.05.24.공개, 착탈 가능한 커버를 갖는 휴대 단말)(Patent Document 3) Japanese Laid-Open Patent Publication No. 2012-100034 (2012.05.24 Open, portable terminal having detachable cover)
본 발명은 상기와 같은 문제점을 해결하기 위하여 제안된 것으로, 두께가 얇으면서도 우수한 강성을 나타내어 디스플레이 패널을 안정적으로 지지할 수 있는 백 커버와 디스플레이 장치를 제공하는 것을 목적으로 한다.SUMMARY OF THE INVENTION It is an object of the present invention to provide a back cover and a display device capable of stably supporting a display panel with a thin thickness and excellent rigidity.
또한, 본 발명은 디스플레이 장치의 측면 테두리부를 다양하게 장식할 수 있는 백 커버와 디스플레이 장치를 제공하는 것을 목적으로 한다.It is another object of the present invention to provide a back cover and a display device that can decorate various side edges of a display device.
또한, 본 발명은 표면을 다양한 형상과 색상으로 장식할 수 있는 백 커버와 디스플레이 장치를 제공하는 것을 목적으로 한다.It is another object of the present invention to provide a back cover and a display device which can decorate the surface with various shapes and colors.
또한, 본 발명은 가공성이 우수하여 제조 공정을 단순화하고 제조 비용을 절감할 수 있는 백 커버와 디스플레이 장치를 제공하는 것을 목적으로 한다.It is another object of the present invention to provide a back cover and a display device which are excellent in workability and can simplify a manufacturing process and reduce manufacturing cost.
상기와 같은 목적의 본 발명은, 금속 플레이트 양면에, 황산 처리 펄프나 페놀 함침 펄프와 같은 화학 처리 펄프가 압착 경화되는 보강 펄프층과, 인산염 처리된 방염 펄프층과, 멜라민 수지가 함침된 문양 펄프층이 압착 경화된 고밀도 목재 재질의 압착 펄프층이 형성되는 백 커버에 의하여 달성될 수 있다.In order to achieve the above object, the present invention is characterized in that a reinforcing pulp layer in which chemically treated pulp such as sulfuric acid-treated pulp or phenol-impregnated pulp is pressed and cured is provided on both sides of a metal plate, a flame-resistant pulp layer subjected to a phosphate treatment, Layer can be achieved by a back cover on which a pressed pulp layer of a pressure-hardened high-density wood material is formed.
본 발명의 백 커버는 금속 소재의 플레이트 표면에 고밀도 압착 펄프층이 형성되어 슬림하면서 높은 강도를 나타내어, 대화면, 슬림형 및 경량화의 디스플레이 장치에 유리하게 적용될 수 있다.The back cover of the present invention is slim and has high strength because a high-density pressed pulp layer is formed on a plate surface of a metal material, and can be advantageously applied to a display device of a large-screen, slim and lightweight.
또한, 본 발명의 백 커버는 수지 함침 펄프층이 외면을 장식하여 디스플레이 장치의 외관을 다양한 문양과 색상으로 장식할 수 있는 효과가 있다.In addition, the back cover of the present invention has an effect that the resin-impregnated pulp layer adorns the outer surface to decorate the appearance of the display device with various patterns and colors.
본 발명의 백 커버는 압착 펄프층 외부로 금속 플레이트가 노출되어 디스플레이 장치의 테두리부를 용이하게 가공할 수 있다.The back cover of the present invention can expose the metal plate to the outside of the pressed pulp layer to easily process the edge portion of the display device.
도 1a 및 1b는 본 발명의 일 실시예에 따른 디스플레이 장치의 주요 구성을 나타낸 분해 사시도와 단면도,1A and 1B are an exploded perspective view and a cross-sectional view showing a main configuration of a display device according to an embodiment of the present invention,
도 2a 및 2b는 본 발명의 다른 실시예에 따른 디스플레이 장치의 주요 구성을 나타낸 분해 사시도,FIGS. 2A and 2B are exploded perspective views showing a main configuration of a display device according to another embodiment of the present invention;
도 3a는 본 발명의 제1 실시예에 따른 백 커버의 상세 구성을 나타낸 단면도 3A is a cross-sectional view showing a detailed configuration of a back cover according to the first embodiment of the present invention
도 3b는 본 발명의 제2 실시예에 따른 백 커버의 상세 구성을 나타낸 단면도,FIG. 3B is a sectional view showing the detailed structure of the back cover according to the second embodiment of the present invention,
도 3c는 본 발명의 제3 실시예에 따른 백 커버의 상세 구성을 나타낸 단면도,3C is a cross-sectional view showing a detailed configuration of a back cover according to a third embodiment of the present invention,
도 4a와 4b는 본 발명의 실시예에 따른 백 커버가 적용된 디스플레이 장치의 다른 예를 나타낸 사시도와 단면도이다.4A and 4B are a perspective view and a cross-sectional view illustrating another example of a display device to which a back cover according to an embodiment of the present invention is applied.
도 5a 및 5b는 본 발명의 제4 실시예에 따른 백 커버와 디스플레이 장치를 나타낸 단면도이다.5A and 5B are cross-sectional views illustrating a back cover and a display device according to a fourth embodiment of the present invention.
본 발명과 본 발명의 실시에 의해 달성되는 기술적 과제는 다음에서 설명하는 본 발명의 바람직한 실시예들에 의하여 보다 명확해질 것이다. 다음의 실시예들은 단지 본 발명을 설명하기 위하여 예시된 것에 불과하며, 본 발명의 범위를 제한하기 위한 것은 아니다. 본 발명의 백 커버는 TV, 모니터, 광고판 등과 같은 대화면의 디스플레이 장치뿐만 아니라 스마트 폰 등과 같은 모바일 디스플레이 장치에서 백 커버와 같은 외부 하우징에 적용될 수 있다. 이하에서, 본 발명의 실시예에 따른 디스플레이 장치를 개략적으로 살펴본 후, 백 커버의 상세한 구성에 대하여 각 실시예에 따라 살펴보기로 한다.BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings. The following examples are merely illustrative of the present invention and are not intended to limit the scope of the present invention. The back cover of the present invention can be applied to an external housing such as a back cover in a mobile display device such as a smart phone as well as a large-screen display device such as a TV, a monitor, a billboard and the like. Hereinafter, a display device according to an embodiment of the present invention will be schematically described, and then a detailed structure of the back cover will be described according to each embodiment.
도 1a 및 도 1b는 본 발명의 일 실시예에 따른 디스플레이 장치를 나타낸 분해 사시도와 결합 단면도로서 미들 프레임을 갖는 구조의 디스플레이 장치를 도시하였고, 도 2a 및 2b는 본 발명의 다른 실시예에 따른 디스플레이 장치를 나타낸 분해 사시도와 결합 단면도로서 미들 프레임이 제거되는 구조의 디스플레이 장치를 도시하였다.FIGS. 1A and 1B are exploded perspective views showing a display device according to an embodiment of the present invention and an engaging cross-sectional view, respectively, showing a display device having a structure with a middle frame, A display device of a structure in which a middle frame is removed as an exploded perspective view and an engagement sectional view showing the device is shown.
먼저, 도 1a 및 도 1b를 참조하면, 본 발명의 일 실시예에 따른 디스플레이 장치는 디스플레이 패널(200)과, 디스플레이 패널(200)의 배면에 결합되는 백 커버(100)와, 디스플레이 패널(200)의 측면을 따라 결합되는 미들 프레임(300)을 포함한다.1A and 1B, a display device according to an embodiment of the present invention includes a display panel 200, a back cover 100 coupled to the back surface of the display panel 200, a display panel 200 (Not shown).
상기 디스플레이 패널(200)은 디스플레이 장치에서 영상을 표시하는 핵심 부품으로, OLED 패널, 액정 패널, 플라즈마 패널 등과 같은 다양한 종류의 표시장치로 구성될 수 있으며, 종류에 따라 백라이트 유닛을 포함할 수 있다. 또한, 디스플레이 패널(200)은 백 커버(100)의 전면에 결합되며, 백 커버(100) 배면에 체결되는 제어 모듈에 의하여 영상이 제어된다.The display panel 200 is a core part for displaying an image on a display device, and may include various types of display devices such as an OLED panel, a liquid crystal panel, and a plasma panel, and may include a backlight unit depending on the type. The display panel 200 is coupled to the front surface of the back cover 100 and the image is controlled by the control module coupled to the back surface of the back cover 100.
상기 백 커버(100)는 전면에 결합되는 디스플레이 패널(200)을 지지함과 동시에 디스플레이 장치의 배면 케이스 기능을 한다. 백 커버(100)는 디스플레이 장치의 형상에 대응하는 사각 플레이트 형상을 이루며, 곡면 디스플레이 장치에 적용되는 경우 소정의 곡률을 가질 수 있다. 또한, 상기 백 커버(100)에는 브라켓 등이 체결되기 위한 다수의 다수의 펨넛(pem-nut)이 결합될 수 있다.The back cover 100 supports the display panel 200 coupled to the front surface and functions as a back case of the display device. The back cover 100 has a rectangular plate shape corresponding to the shape of the display device, and may have a predetermined curvature when applied to a curved display device. Also, a plurality of pem-nuts may be coupled to the back cover 100 for fastening the bracket or the like.
상기 미들 프레임(300)은 디스플레이 패널(200)과 백 커버(100)를 결합시킴과 동시에 이들의 측면을 차폐하여 디스플레이 장치의 가장자리부 외관을 장식하는 구성이다. 이러한 미들 프레임(300)은 사각 프레임 형상을 이루고, 내측으로 돌출되는 안착 리브의 전면과 후면에 디스플레이 패널(200)과 백 커버(100)가 결합되며, 디스플레이 패널(200)과 백 커버(100)는 폼 패드 또는 양면 테이프와 같은 접착부재(400)를 매개로 미들 프레임(300)에 결합될 수 있다.The middle frame 300 has a structure in which the display panel 200 and the back cover 100 are coupled to each other while shielding the side surfaces thereof to decorate the outer edge of the edge of the display device. The display panel 200 and the back cover 100 are coupled to the front and back surfaces of the inwardly protruding seating ribs and the display panel 200 and the back cover 100 are coupled to each other. May be coupled to the middle frame 300 via an adhesive member 400 such as a foam pad or double-sided tape.
또한, 도 2a 및 2b를 살펴보면, 본 발명의 다른 실시예에 따른 디스플레이 장치는 디스플레이 패널(200)과, 디스플레이 패널(200)의 배면에 결합되는 백 커버(100)를 포함한다. 백 커버(100)는 가장자리가 전면으로 돌출되는 돌출부를 구비하고, 상기 돌출부가 디스플레이 패널(200)의 측부를 차폐하는 테두리부(100a)를 형성하여 미들 프레임이 삭제될 수 있다. 상기 테두리부(100a)는 백 커버의 가장자리가 접힘 가공되거나, 백 커버를 구성하는 압착 플레이트의 일부가 절삭 가공되거나, 백 커버를 구성하는 심재 플레이트의 단부가 접힘 가공되는 공정으로 형성될 수 있다. 2A and 2B, a display apparatus according to another embodiment of the present invention includes a display panel 200 and a back cover 100 coupled to a back surface of the display panel 200. [ The back cover 100 has a protrusion protruding from the front edge of the back cover 100. The protrusion may form a rim portion 100a that shields the side of the display panel 200 so that the middle frame may be removed. The rim portion 100a may be formed by a process in which the edge of the back cover is folded, a part of the compression plate constituting the back cover is cut, or the end portion of the core plate constituting the back cover is folded.
즉, 본 발명의 다른 실시예에 따른 디스플레이 장치는 백 커버(100)가 장치의 가장자리부 외관을 장식하게 되어 형성하게 되어, 도 1의 실시예와 비교할 때 미들 프레임을 제거할 수 있어 부품 수를 줄여 조립 공정을 단순화시키고 제조비용을 절감할 수 있는 장점을 나타낸다. 이때, 백 커버(100)로만 디스플레이 장치를 지지하여야 하므로, 백 커버는 더욱 우수한 강성을 가져야 한다.In other words, the display device according to another embodiment of the present invention is formed by decorating the outer surface of the edge portion of the back cover 100, so that the middle frame can be removed as compared with the embodiment of FIG. 1, Thereby simplifying the assembling process and reducing the manufacturing cost. At this time, since the display device must be supported only by the back cover 100, the back cover should have more excellent rigidity.
이와 같이 디스플레이 장치는 배면에서 디스플레이 장치를 지지하거나 장식하기 위한 백 커버가 필수적으로 구비하여야 하며, 특히 상기 백 커버는 디스플레이 장치의 각 구성을 안정적으로 지지하여야 하므로 우수한 강성을 나타내어야 하고, 동시에 경량화 및 슬림화에 유리한 특성을 나타내어야 한다. As described above, the display device must have a back cover for supporting or decorating the display device on the back surface. In particular, since the back cover must stably support each configuration of the display device, the display device must exhibit excellent rigidity, It should exhibit characteristics favorable for slimming.
도 3a 내지 도 3c는 본 발명의 다양한 실시예에 따른 백 커버의 상세 구성을 나타낸 확대 단면도이다.3A to 3C are enlarged cross-sectional views showing a detailed configuration of a back cover according to various embodiments of the present invention.
먼저, 도 3a를 참조하여 본 발명의 제1 실시예에 따른 백 커버를 살펴보면, 백 커버(100)는 심재 플레이트(110)의 양면에 다수의 펄프층이 압착 접합된 압착 펄프층(120)을 형성하는 구조를 이룬다.Referring to FIG. 3A, a back cover 100 according to a first embodiment of the present invention includes a pressurized pulp layer 120 in which a plurality of pulp layers are press-bonded to both sides of a core plate 110 .
구체적으로 살펴보면, 백 커버(100)는 심재 플레이트(110), 상기 심재 플레이트(110) 양면에 압착 접합되는 보강 펄프층(130)과, 상기 보강 펄프층(130) 양면에 압착 접합되는 문양 펄프층(140)을 포함하고, 상기 보강 펄프층(130)과 문양 펄프층(140) 사이에 방염 펄프층(150)이 더 개입될 수 있다.Specifically, the back cover 100 includes a core plate 110, a reinforcing pulp layer 130 which is press-bonded to both sides of the core plate 110, and a patterned pulp layer 130 which is press-bonded to both sides of the reinforcing pulp layer 130. [ And a flame-resistant pulp layer 150 may further intervene between the reinforcing pulp layer 130 and the patterned pulp layer 140.
상기 심재 플레이트(110)는 백 커버(100)의 강성을 유지하는 메인 플레이트로서 기능하며, 특히, 고온에서 압착 및 열경화되는 압착 펄프층(120)의 편평도 변형, 휨 또는 뒤틀림 현상을 방지하여 백 커버(100)의 외관을 보호한다. 심재 플레이트(110)는 강성이 우수한 금속 소재로 구성되며, 일 예로 니켈, 카본스틸, 몰리브덴, 알루미늄, 티타늄, 텅스텐, 스테인리스, GI 등과 같은 소재로 구성될 수 있다. 또한, 심재 플레이트(110)는 점차 경량화되면서 우수한 강성을 나타내고 있는 강화 유리, 강화 플라스틱과 같은 기능성 플레이트로 구성될 수도 있다. 상기 심재 플레이트(110)는 대략 1.2mm 이하의 두께를 갖는 시트 또는 필름 형상을 이룬다. The core plate 110 functions as a main plate that maintains the rigidity of the back cover 100. In particular, the core plate 110 prevents the flattened deformation, warping, or distortion of the pressed pulp layer 120, Thereby protecting the outer appearance of the cover 100. The core plate 110 is made of a metal material having excellent rigidity and can be made of materials such as nickel, carbon steel, molybdenum, aluminum, titanium, tungsten, stainless steel, GI and the like. In addition, the core plate 110 may be composed of a functional plate such as tempered glass or reinforced plastic, which exhibits excellent rigidity while gradually becoming lightweight. The core plate 110 has a sheet or film shape having a thickness of about 1.2 mm or less.
상기 보강 펄프층(130)은 심재 플레이트(110) 표면에 압착 및 경화되어 백 커버(100)의 강성을 보강하는 기능을 한다.The reinforcing pulp layer 130 is pressed and cured on the surface of the core plate 110 to reinforce the rigidity of the back cover 100.
본 발명의 보강 펄프층(130)은 화학 처리된 펄프가 압착 경화된 펄프층으로, 상기 화학 처리된 펄프는 일 예로, 황산에 침지시킨 후 다시 알칼리 탈지 처리한 황산 처리 펄프로 구성될 수 있다. 황산 처리 펄프는 우수한 내열성을 나타내어 열팽창 현상이 거의 나타나지 않고, 외력에도 강한 내성을 가져 휨 변형 방지에 유리하며, 표면에서의 접착 균일도가 우수하여 고온 압착에 유리한 특성을 나타낸다. The reinforcing pulp layer 130 of the present invention may be composed of a pulp layer in which chemically treated pulp is a pressure-cured hardened paper, and the chemically treated pulp may, for example, be a sulfuric acid treated pulp after being dipped in sulfuric acid and then alkali degreased. The sulfuric acid-treated pulp exhibits excellent heat resistance and hardly exhibits thermal expansion, and is resistant to external forces, so that it is advantageous in preventing warpage deformation.
또한, 상기 화학 처리된 펄프는 페놀류와 포름알데히드류를 가열 축합시켜 얻게 되는 페놀 수지가 함침된 페놀 함침 펄프로 구성될 수 있다. 페놀 함침 펄프는 전기적, 기계적 특성이 양호하고, 내열성과 난연성이 뛰어난 특성을 나타내며, 펄프층 사이에 우수한 접착성을 나타낸다.The chemically treated pulp may be composed of a phenol impregnated pulp impregnated with a phenol resin obtained by heat condensation of phenols and formaldehyde. Phenol impregnated pulp exhibits good electrical and mechanical properties, exhibits excellent heat resistance and flame retardancy, and exhibits excellent adhesion between pulp layers.
상기 보강 펄프층(130)은 단일층으로 구성될 수 있으나, 두 층 이상의 다수층으로 구성되어 심재 플레이트(110)의 강성을 보강하게 된다. The reinforcing pulp layer 130 may be composed of a single layer, but it is composed of multiple layers of two or more layers to reinforce the rigidity of the core plate 110.
상기 문양 펄프층(140)은 백 커버(100)의 외관을 장식하는 기능을 한다. 문양 펄프층(140)은 열경화성 수지가 함침된 펄프층으로 구성되며, 본 발명의 문양 펄프층(140)은 멜라민과 포름 알데히드를 반응시켜 얻은 멜라민 수지가 함침된 멜라민 함침 펄프로 구성된다. 이때, 펄프 표면에는 나무 문양 등이 형성되거나 문양이 향상된 시트가 결합될 수 있으며, 멜라민 함침 펄프는 무색 투명한 멜라민 수지에 의하여 펄프 표면에 인쇄된 고유 문양을 외부로 표출할 수 있는 장점이 있고, 우수한 내수성과 내열성을 나타내어 외부의 습기나 열에 강한 장점이 있다. 따라서, 백 커버(100)는 문양 펄프층(140)의 멜라민 함침 펄프 표면에 형성되는 문양에 의하여 디스플레이 장치의 외관을 다양하게 표현할 수 있다.The patterned pulp layer 140 serves to decorate the outer surface of the back cover 100. The patterned pulp layer 140 is composed of a pulp layer impregnated with a thermosetting resin, and the patterned pulp layer 140 of the present invention is composed of a melamine impregnated pulp impregnated with a melamine resin obtained by reacting melamine with formaldehyde. The melamine-impregnated pulp has an advantage of being able to display a unique pattern printed on the pulp surface by a colorless transparent melamine resin to the outside, It exhibits water resistance and heat resistance, and is strong against external moisture and heat. Accordingly, the back cover 100 can express various aspects of the appearance of the display device by the pattern formed on the melamine-impregnated pulp surface of the patterned pulp layer 140.
상기 방염 펄프층(150)은 디스플레이 장치에서 발생되는 열 또는 외부에서 발생되는 화재로부터 목재 재질의 압착 펄프층(120)이 난연성을 갖도록 하는 기능을 한다. 얇은 두께로 압착되는 각 펄프층들은 화재 등에 의한 열에 다소 취약할 수 있으며, 디스플레이 장치에서 발생되는 고온의 열에 의하여 펄프층들이 손상될 위험이 있다. 상기 방염 펄프층(150)은 다양한 종류의 방염제가 처리된 펄프로 구성될 수 있으며, 일 예로 인산염 처리된 방염 펄프로 구성될 수 있다.The flame-repelling pulp layer 150 functions to make the pressed pulp layer 120 made of a wood material have flame retardancy from the heat generated in the display device or the fire generated from the outside. Each of the pulp layers pressed to a thin thickness may be somewhat vulnerable to heat due to fire or the like and there is a risk that the pulp layers are damaged due to the high temperature heat generated in the display device. The flame-retardant pulp layer 150 may be composed of pulp treated with various kinds of flame retardants, for example, phosphate-treated flame-retardant pulp.
상기와 같은 구성의 백 커버(100)는 금속 플레이트 양면에 황산 처리 펄프 또는 페놀 수지 펄프, 인산염 함침 펄프 및 멜라민 함침 펄프를 순차적으로 적층시킨 후 고온·고압 조건에서 압착 및 경화하여 일체로 형성할 수 있다. 이때, 상기 압착 펄프층(120)은 1.35kg/dm3 이상의 고밀도를 갖도록 압착된다. 또한, 압착 펄프층(120)은 심재 플레이트(110)를 중심으로 양면으로 대칭을 이루는 것이 바람직하다. 압착 펄프층(120)이 비대칭을 이루는 경우 고온에서의 압착 경화 과정에서 열팽창 차이에 따른 휨 변형이 발생할 수 있다. The back cover 100 having the above-described structure can be integrally formed by pressing and curing sulfuric acid-treated pulp, phenol resin pulp, phosphate-impregnated pulp, and melamine-impregnated pulp sequentially on both sides of the metal plate under high temperature and high pressure conditions have. At this time, the compressed pulp layer 120 is squeezed so as to have more than 1.35kg / dm 3 density. Also, it is preferable that the pressed pulp layer 120 is symmetrical on both sides with the core material plate 110 as a center. When the pressed pulp layer 120 is asymmetric, a flexural deformation due to a difference in thermal expansion may occur during the pressing hardening process at a high temperature.
또한, 다수층으로 구성되는 보강 펄프층(130)은 황산 처리 펄프와 페놀 수지 펄프가 혼용되어 적층될 수 있으며, 황산 처리 펄프는 점착성이 다소 약하므로 핫 멜팅 필름이나 펄프 표면을 에폭시 처리한 접착층(131)을 매개로 금속 플레이트나 다른 종류의 수지 함침 펄프와 접합되는 것이 바람직하다.Further, the reinforcing pulp layer 130 composed of a plurality of layers can be laminated by mixing the sulfuric acid-treated pulp and the phenolic resin pulp, and since the sulfuric acid-treated pulp has a somewhat weak tackiness, the hotmelt film or the adhesive layer 131 to the metal plate or other resin-impregnated pulp.
도 3b를 참조하면, 본 발명의 제2 실시예에 따른 백 커버(100)는 심재 플레이트(110)가 다층 구조를 이루고, 심재 플레이트(110) 사이에 보강 펄프층(130)이 더 개입된다.Referring to FIG. 3B, the back cover 100 according to the second embodiment of the present invention has a multi-layer structure of the core plate 110, and further reinforcing pulp layer 130 is interposed between the core plates 110.
구체적으로 살펴보면, 심재 플레이트(110)는 상부 심재 플레이트(110)와 하부 심재 플레이트(110)의 한 쌍으로 구성되고, 상부 심재 플레이트(110)와 하부 심재 플레이트(110)는 보강 펄프층(130)을 매개로 접합된다. 이때, 상기 보강 펄프층(130)은 단일층이 개입될 수 있으며, 두 층 이상의 다수층이 개입될 수 있다. 또한, 제2 실시예에 따른 백 커버(100)는 상하부 심재 플레이트(110) 외면에 보강 펄프층(130)과 문양 펄프층(140)이 형성되며, 보강 펄프층(130)과 문양 펄프층(130)사이에 방염 펄프층(150)이 더 개입될 수 있다.Specifically, the core plate 110 is composed of a pair of the upper core plate 110 and the lower core plate 110, and the upper core plate 110 and the lower core plate 110 are made of the reinforcing pulp layer 130, As shown in Fig. At this time, the reinforcing pulp layer 130 may include a single layer, and more than two layers may be interposed. In the back cover 100 according to the second embodiment of the present invention, the reinforcing pulp layer 130 and the patterned pulp layer 140 are formed on the outer surface of the upper and lower core plates 110 and the reinforcing pulp layer 130 and the patterned pulp layer 130 may be further interposed between the flame-retardant pulp layers 150.
상기 제2 실시예의 백 커버(100)는 중앙의 보강 펄프층(130)을 중심으로 대칭되는 구조를 이루며, 한 쌍의 심재 플레이트(110)와 함께 심재 플레이트(110) 사이에 황산 처리 또는 페놀 함침된 보강 펄프층(130)이 개입되어 더욱 우수한 강성을 나타낼 수 있다.The back cover 100 of the second embodiment has a symmetrical structure around the center reinforcing pulp layer 130 and is provided with a pair of core plates 110 and the core plate 110 with sulfuric acid or phenol impregnated Reinforced pulp layer 130 may intervene to exhibit more excellent rigidity.
도 3c를 참조하면, 본 발명의 제3 실시예에 따른 백 커버(100)는 한 쌍의 심재 플레이트(110)가 백 커버(100)의 외부를 형성하고, 다층 구조의 보강 펄프층(130)이 백 커버(100)의 내부를 형성하도록 구성된다. 즉, 백 커버(100)는 한 쌍의 심재 플레이트(110) 내부에 다층 구조의 보강 펄프층(130)이 압착 경화된 구조를 이룬다. 상기 보강 펄프층(130)은 심재 플레이트(110) 방향에 대하여 대칭 구조를 이루면서, 한 쌍의 심재 플레이트(110)의 강성을 보강한다.3C, the back cover 100 according to the third embodiment of the present invention includes a pair of core plates 110 forming the outside of the back cover 100, a reinforcing pulp layer 130 having a multi- So as to form the inside of the back cover 100. That is, the back cover 100 has a structure in which a multi-layer reinforcing pulp layer 130 is press-cured inside a pair of core plates 110. The reinforcing pulp layer 130 has a symmetrical structure with respect to the direction of the core plate 110 and reinforces the rigidity of the pair of core plates 110.
상기 제3 실시예에 따른 백 커버(100)에서 심재 플레이트(110)는 백 커버(100)의 강성을 유지함과 동시에 디스플레이 패널의 방열 기능을 하도록 구성된다. 이를 위하여 적어도 일 측의 심재 플레이트(110)는 열전도성이 우수한 금속 플레이트로 구성되며, 일 예로 알루미늄 플레이트로 구성될 수 있다. 따라서 고밀도 압착 펄프층으로 이루어지는 백 커버는 목재 재질에 의하여 방열 특성이 다소 저하될 수 있으나, 상기 제6실시예와 같이 열전도성이 우수한 금속 플레이트가 표면을 형성하므로 방열 특성이 향상될 수 있다.In the back cover 100 according to the third embodiment, the core plate 110 is configured to maintain the rigidity of the back cover 100 and at the same time to perform the heat radiation function of the display panel. For this purpose, at least one core plate 110 is made of a metal plate having excellent thermal conductivity, and may be made of an aluminum plate, for example. Accordingly, the heat dissipation characteristics of the back cover made of the high-density pressed pulp layer may be somewhat deteriorated due to the wood material, but the heat dissipation characteristic can be improved because the metal plate having excellent thermal conductivity is formed as in the sixth embodiment.
살펴본 바와 같이 본 발명이 실시예에 따른 백 커버는, 금속 또는 글래스 재질의 플레이트에 황산 처리 펄프 및 페놀 함침 펄프 중 선택되는 어느 하나 이상의 구성이 압착 경화되어 보강층을 형성하고, 상기 심재층 표면에 인산염 함침 펄프와 멜라민 함침 펄프가 압착 경화되어 표피층을 형성하는 구성을 특징으로 한다. As described above, the back cover according to the embodiment of the present invention is characterized in that at least one selected from sulfuric acid-treated pulp and phenol-impregnated pulp is compression-cured to form a reinforcing layer on a metal or glass plate, Characterized in that the impregnated pulp and the melamine impregnated pulp are pressed and cured to form a skin layer.
이하에서는 보강 펄프층의 종류에 따른 커버 플레이트의 물리적 특성을 실험예를 참고하여 살펴본다.Hereinafter, the physical properties of the cover plate according to the type of the reinforcing pulp layer will be described with reference to experimental examples.
본 발명의 실험에서, 한 쌍의 금속 플레이트 내면에 페놀 함침 펄프를 압착 경화한 커버 플레이트(실험예1), 한 쌍의 금속 플레이트 내면과 외면에 황산 처리 펄프를 압착 경화한 커버 플레이트(실험예2)에 대하여 휨과 열팽창에 관한 특성을 측정하였다. In the experiment of the present invention, a cover plate (Experimental Example 1) in which a phenol-impregnated pulp was pressure-cured on the inner surfaces of a pair of metal plates (Experimental Example 1), a cover plate in which a pair of metal plates was press- ) Were measured for bending and thermal expansion.
실험예1에서 0.5mm 두께의 한 쌍의 알루미늄 플레이트 내부에 5 레이어의 페놀 함침 펄프를 적층하였고, 실험예2에서 0.5mm 두께의 알루미늄 플레이트 내부에 2 레이어의 황산 처리 펄프와 외부에 각 1 레이어의 황산 처리 펄프를 적층하였으며, 각 펄프층을 소정의 조건에서 압착 및 열경화하였다. 각 실험예에서 5회의 실험을 반복하여 그 결과를 아래 표 1에 나타내었다.In Experimental Example 1, five layers of phenol-impregnated pulp were laminated in a pair of aluminum plates each having a thickness of 0.5 mm. In Experimental Example 2, two layers of sulfuric acid-treated pulp and one layer Sulfuric acid treated pulp were laminated, and each pulp layer was pressed and thermally cured under predetermined conditions. Five experiments were repeated in each experimental example, and the results are shown in Table 1 below.
표 1
구 분 실험예1 실험예2 비고
멜라민 함침 펄프 2 layer 2 layer
방염 펄프 2 layer 2 layer
페놀 함침 펄프 5 layer -
황산 처리 펄프 - 4 layer
열경화조건 온도 145℃ 145℃
시간 60 min 60 min
압력 65kgf/㎠ 65kgf/㎠
특성평가 고온 휨 2~10 mm 0~3 mm 휨변형량 감소
열팽창계수 20~40x10-6 10~20x10-6 열팽창량 감소
Table 1
division Experimental Example 1 Experimental Example 2 Remarks
Melamine impregnated pulp 2 layer 2 layer
Flame-retardant pulp 2 layer 2 layer
Phenol-impregnated pulp 5 layer -
Sulfuric acid treated pulp - 4 layer
Heat curing condition Temperature 145 ° C 145 ° C
time 60 min 60 min
pressure 65kgf / cm2 65kgf / cm2
Character rating High temperature bending 2 to 10 mm 0 to 3 mm Reduced deflection
Coefficient of thermal expansion 20 to 40 x 10 -6 10 to 20 x 10 -6 Reduced thermal expansion
위 표 1에서 알 수 있는 바와 같이 금속 재질의 플레이트 표면에 페놀 압착 펄프를 접합한 커버 플레이트(실험예1)는 10mm 이내의 휨 변형과 40x10-6 이하의 열팽창 계수를 나타내어 비교적 우수한 물리적 특성을 나타내고 있으며, 특히, 황산 처리 펄프(실험예2)를 접합한 커버 플레이트(실험예2)에서는 3mm 이내의 휨 변형과 20x10-6 이하의 열팽창 계수를 나타내어 페놀 압착 펄프가 합지된 커버 플레이트보다 현저히 향상된 물리적 특성을 나타내고 있음을 알 수 있다.As can be seen in Table 1, the cover plate (Experimental Example 1) in which the phenolic pressure pulp was bonded to the metal plate surface exhibited a relatively good physical property due to a flexural deformation within 10 mm and a thermal expansion coefficient of 40 x 10 -6 or less Particularly, in the cover plate (Experimental Example 2) to which the sulfuric acid-treated pulp (Experimental Example 2) was bonded, the flexural deformation within 3 mm and the thermal expansion coefficient of 20 x 10 -6 or less exhibited significantly improved physical properties And the like.
상기와 같이 본 발명의 실시예에 따라 금속 소재의 심재 플레이트 표면에 황산 처리 펄프가 단독으로 압착 경화되거나 황산 처리 펄프와 페놀 함침 펄프가 혼합되어 압착 경화된 백 커버는 얇은 두께로도 우수한 강성을 나타낼 수 있어, 대화면 및 슬림형 디스플레이 장치에 유리하게 적용될 수 있다.As described above, according to the embodiment of the present invention, the sulfuric acid-treated pulp alone is press-cured on the surface of the core material plate of the metal material or the pressure-hardened back cover mixed with sulfuric acid-treated pulp and phenol impregnated pulp exhibits excellent rigidity even with a thin thickness And can be advantageously applied to a large-screen and slim display device.
한편, 백 커버는 두께가 얇으면서도 충분한 강성을 나타내어야 하므로, 심재 플레이트를 구성하는 금속 플레이트는 1.2mm 이하의 두께를 갖는 것이 바람직하고, 압착 펄프층을 구성하는 황산 처리 펄프, 페놀 함침 펄프, 인산염 처리 펄프 및 멜라민 함침 펄프가 대략 11 내지 34 레이어로 적층되어 2 내지 8mm의 두께로 압착 경화되는 것이 바람직하다. 금속 플레이트의 두께가 1.2mm를 초과하는 경우 강성은 우수하지만 상대적으로 경량화 및 슬림화에 불리한 단점이 있으며, 압착 펄프층이 2mm 미만의 두께로 형성되는 경우 백 커버의 강성을 충분히 보강할 수 없고, 8mm를 초과하는 경우 슬림화에 불리하게 된다. On the other hand, since the back cover should exhibit sufficient rigidity with a small thickness, it is preferable that the metal plate constituting the core plate has a thickness of 1.2 mm or less, and the sulfuric acid-treated pulp, phenol impregnated pulp, It is preferred that the treated pulp and the melamine impregnated pulp are laminated in approximately 11 to 34 layers and pressed and cured to a thickness of 2 to 8 mm. When the thickness of the metal plate exceeds 1.2 mm, the rigidity is excellent, but it is disadvantageous in that it is relatively light and slim. In the case where the pressed pulp layer is formed to a thickness of less than 2 mm, the rigidity of the back cover can not be sufficiently reinforced, , It becomes disadvantageous to slim down.
도 4a 및 4b는 본 발명의 제4 실시예에 따른 백 커버와 상기 백 커버가 적용된 디스플레이 장치를 나타낸 단면도이다.4A and 4B are cross-sectional views illustrating a back cover according to a fourth embodiment of the present invention and a display device to which the back cover is applied.
도 4a를 참조하면, 본 발명의 제4 실시예에 따른 백 커버는 심재 플레이트(110) 양면에 압착 펄프층(120)이 형성되고, 심재 플레이트(110)는 압착 펄프층(120) 외부로 노출되는 노출부(110a)를 형성한다. 즉, 다수의 기능성 펄프층으로 이루어지는 압착 펄프층(120)은 심재 플레이트(110)의 가장자리를 소정의 폭으로 노출시키면서 심재 플레이트(110) 양면에 압착 경화되면서 형성된다. 이때, 심재 플레이트(110)가 다수의 층으로 구성되는 경우 어느 하나의 심재 플레이트가 노출부(110a)를 형성한다.Referring to FIG. 4A, the back cover according to the fourth embodiment of the present invention includes a core layer plate 110 and a core layer plate 110 formed on both sides of the core layer plate 110, Thereby forming an exposed portion 110a. That is, the pressed pulp layer 120 composed of a plurality of functional pulp layers is formed by pressing and curing both surfaces of the core plate 110 while exposing the edges of the core plate 110 with a predetermined width. At this time, when the core plate 110 is composed of a plurality of layers, one of the core plates forms the exposed portion 110a.
상기 제4 실시예에 따른 백 커버(100)는 도 4b에 도시된 바와 같이 압착 펄프층(120) 외부로 노출된 심재 플레이트(110)의 노출부(110a)가 일 측으로 돌출되도록 접힘 가공되면서 그 내부에 수용공간을 형성한다. 그리고 디스플레이 패널(200)은 수용공간에서 접착부재(400)를 매개로 백 커버(100)에 결합되며, 심재 플레이트(110)의 상기 노출부(110a)는 전면으로 접힘 가공되면서 디스플레이 장치의 가장자리 전면과 측면 외관을 장식하는 테두리부(100a)를 형성한다. 따라서 상기 디스플레이 장치는 심재 플레이트에 의하여 전면과 측면에서 금속 소재 특유의 외관을 제공할 수 있다.The back cover 100 according to the fourth embodiment is folded so that the exposed portion 110a of the core plate 110 exposed to the outside of the pressed pulp layer 120 protrudes to one side as shown in FIG. Thereby forming a receiving space therein. The display panel 200 is coupled to the back cover 100 through the adhesive member 400 in the accommodation space and the exposed portion 110a of the core plate 110 is folded to the front, And a rim portion 100a for decorating the side surface. Therefore, the display device can provide a unique appearance of the metal material on the front and side surfaces by the core plate.
상기 테두리부(100a)는 심재 플레이트(110)의 노출부(110a)를 접힘 가공 즉, 벤딩(bending), 컬링(curling) 또는 헤밍(hemming) 가공하여 형성할 수 있다. 심재 플레이트(110)는 금속 소재로 단부가 날카로우므로 테두리부가 'L' 형상으로 벤딩되는 경우 다이아몬드 휠 커팅(wheel cutting)과 같은 표면 가공 공정이 적용되어야 한다. 그러나 테두리부(100a)가 컬링(curling) 또는 헤밍(hemming) 공정으로 형성되면 날카로운 단부가 내측을 향하므로 표면 가공 공정이 생략될 수 있다. 또한, 컬링 또는 헤밍 공정이 적용되는 테두리부(100a)는 내외측 플레이트의 이중 구조를 이루므로, 내측 단부가 디스플레이 패널의 측면을 탄성 가압하도록 하여 디스플레이 패널을 더욱 안정적으로 고정할 수 있다.The rim portion 100a may be formed by folding, bending, curling, or hemming the exposed portion 110a of the core plate 110. [ Since the core material plate 110 is made of a metal material and the end portion thereof is sharp, a surface processing process such as diamond wheel cutting should be applied when the edge portion is bent in an 'L' shape. However, if the rim portion 100a is formed by a curling or hemming process, the sharp end portion faces inward, and the surface machining process can be omitted. In addition, since the rim portion 100a to which the curling or the hemming process is applied has a double structure of the inner and outer plates, the inner end of the rim portion 100a elastically presses the side surface of the display panel, thereby more stably fixing the display panel.
도 5a와 5b는 본 발명의 실시예에 따른 백 커버가 적용된 디스플레이 장치의 다른 예를 나타낸 사시도와 단면도이다. 본 발명의 실시예에 따른 백 커버(100)는 디스플레이 패널을 지지하는 후면 커버로 기능함과 동시에 디스플레이 장치를 바닥에 지지하는 스탠드로 기능을 할 수 있다. 즉, 백 커버(100)는 스탠드 일체형의 플레이트로 구성된다.5A and 5B are a perspective view and a cross-sectional view illustrating another example of a display device to which a back cover according to an embodiment of the present invention is applied. The back cover 100 according to the embodiment of the present invention may function as a back cover for supporting the display panel and a stand for supporting the display device on the floor. That is, the back cover 100 is composed of a stand-integrated type plate.
이들 도면에 도시된 바와 같이, 본 발명의 실시예에 따른 백 커버(100)는 디스플레이 패널(200)을 지지하는 사각 판상의 패널부(100-1)와, 상기 패널부(100-1)의 하단부가 소정 각도로 벤딩되면서 하측으로 연장되는 연결부(100-2)와, 상기 연결부(100-2)의 단부가 수평으로 벤딩되면서 연장되는 받침부(100-3)로 구성된다. As shown in these drawings, the back cover 100 according to the embodiment of the present invention includes a panel 100-1 in the form of a rectangular plate for supporting the display panel 200, A connecting portion 100-2 extending downward while bending the lower end at a predetermined angle and a receiving portion 100-3 extending while the end of the connecting portion 100-2 is bent in a horizontal direction.
상기 패널부(100-1)는 디스플레이 패널(200)을 결합시켜 지지하는 구성으로, 디스플레이 패널에 대응하는 사각 형상을 이룬다. 상기 디스플레이 패널(200)은 패널부(100-1) 전면에 직접 결합되거나 미들 프레임(300)을 매개로 패널부(100-1) 전면에 결합될 수 있다.The panel unit 100-1 is configured to support and support the display panel 200, and has a rectangular shape corresponding to the display panel. The display panel 200 may be directly coupled to the front surface of the panel unit 100-1 or may be coupled to the front surface of the panel unit 100-1 via the middle frame 300. [
상기 연결부(100-2)는 패널부(100-1)와 받침부(10-3)를 연결하는 구성으로, 사각 플레이트 형상의 상기 패널부(100-1) 하단부가 벤딩되어 형성되며, 패널부(100-1)의 전면 방향(즉, 디스플레이 패널 방향)으로 소정의 경사를 갖도록 벤딩된다.The connecting portion 100-2 connects the panel portion 100-1 and the receiving portion 10-3 and is formed by bending a lower end portion of the panel portion 100-1 in the shape of a square plate, (I.e., the display panel direction) of the display panel 100-1.
상기 받침부(100-3)는 디스플레이 장치가 지면의 바닥에 안정적으로 배치될 수 있도록 하는 구성으로, 상기 연결부(100-2)의 단부가 반대 방향인 배면 방향으로 벤딩되어 형성되며, 지면과 나란한 수평 방향으로 벤딩된다. The receiving unit 100-3 is configured to stably place the display device on the floor of the ground. The receiving unit 100-3 is formed by bending the end portion of the connecting unit 100-2 in the reverse direction, And is bent in the horizontal direction.
상기와 같은 구성의 백 커버(100)는 심재 플레이트(110)에 다양한 기능의 압착 펄프층(120)이 압착 경화된 판 상의 커버 플레이트를 절삭 및 벤딩 가공하여 형성할 수 있다. 이때, 벤딩 가공은 열가압 프레스 또는 열벤딩 방식이 이용될 수 있다.The back cover 100 having the above-described structure can be formed by cutting and bending a plate-shaped cover plate on which the pressed pulp layer 120 of various functions is press-bonded to the core plate 110. At this time, the bending process may be performed by a heat press press or a thermal bending method.
이상에서 본 발명은 도면에 도시된 일 실시예를 참고로 설명되었으나, 본 기술분야의 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 타 실시예가 가능하다는 점을 이해할 것이다. While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims (11)

  1. 디스플레이 패널과 결합되어 디스플레이 패널을 지지하면서 보호하는 디스플레이 장치용 백 커버에 있어서,A back cover for a display device coupled to a display panel to protect the display panel while supporting the display panel,
    판 상의 심재 플레이트;Plate core plate;
    화학 처리 펄프가 상기 심재 플레이트의 양 면에 압착 경화되어 형성되는 보강 펄프층; 및A reinforcing pulp layer formed by press-curing the chemically treated pulp on both sides of the core plate; And
    외면에 문양이 형성되고, 상기 보강 펄프층 표면에 압착 경화되어 외관을 장식하는 문양 펄프층;을 포함하는 것을 특징으로 하는 디스플레이 장치용 백 커버.And a patterned pulp layer formed on the outer surface of the reinforcing pulp layer and pressed and cured to decorate the outer surface of the reinforcing pulp layer.
  2. 제1항에 있어서, 상기 화학 처리 펄프는,The chemical treatment pulp as set forth in claim 1,
    황산 처리 펄프 또는 페놀 함침 펄프 중 선택되는 하나 이상의 펄프로 구성되는 것을 특징으로 하는 디스플레이 장치용 백 커버.Treated paper pulp, a sulfur-treated paper pulp or a phenol impregnated pulp.
  3. 제2항에 있어서, 상기 황산 처리 펄프는The method of claim 2, wherein the sulfuric acid treated pulp
    핫 멜팅 필름 또는 표면에 처리되는 에폭시를 매개로 압착 경화되는 것을 특징으로 하는 디스플레이 장치용 백 커버.Characterized in that the hot-melt film or the surface thereof is press-cured through an epoxy which is treated.
  4. 제1항에 있어서, 상기 문양 펄프층은,[2] The method according to claim 1,
    멜라민 함침 펄프가 압착 경화되어 형성되는 것을 특징으로 하는 디스플레이 장치용 백 커버.Characterized in that the melamine-impregnated pulp is formed by compression-curing.
  5. 제1항에 있어서,The method according to claim 1,
    상기 보강 펄프층과 상기 문양 펄프층 사이에 개입되어 압착 경화되는 방염 펄프층;을 더 포함하는 것을 특징으로 하는 디스플레이 장치용 백 커버.And a flame-retardant pulp layer interposed between the reinforcing pulp layer and the patterned pulp layer and cured by pressure.
  6. 제1항에 있어서, 상기 심재 플레이트는,[2] The apparatus of claim 1,
    다수의 층으로 형성되고, 각 심재 플레이트는 사이에 보강 펄프층이 개입되는 것을 특징으로 하는 디스플레이 장치용 백 커버.Wherein the core plate is formed of a plurality of layers, and a reinforcing pulp layer is interposed between the core plates.
  7. 제1항에 있어서, 상기 심재 플레이트는,[2] The apparatus of claim 1,
    가장자리가 상기 압착 펄프층 외부로 노출되는 노출부가 디스플레이 패널이 부착되는 전면으로 접힘 가공되는 테두리부를 형성하는 것을 특징으로 하는 디스플레이 장치용 백 커버.Wherein the edge portion of the exposed portion of the pressurized pulp layer forms a rim portion that is folded to the front surface to which the display panel is attached.
  8. 제1항에 있어서, 상기 보강 펄프층은,The absorbent article as set forth in claim 1,
    상기 심재 플레이트 일면에서 중앙부의 일부가 절삭되어 가장자리가 전면으로 돌출되는 테두리부를 형성하는 것을 특징으로 하는 디스플레이 장치용 백 커버.Wherein a part of the central portion of the core plate is cut off from one surface of the core plate to form a rim having an edge protruding from the front surface.
  9. 판 상의 심재 플레이트, 상기 심재 플레이트 양 면에 화학 처리 펄프가 압착 경화된 보강 펄프층 및 문양이 형성된 펄프가 상기 보강 펄프층 표면에 압착 경화된 문양 펄프층으로 이루어지는 백 커버; 및 A back cover comprising a plate-shaped core plate, a reinforcing pulp layer in which chemical-treated pulp is pressure-cured on both sides of the core plate, and a patterned pulp layer in which a patterned pulp is pressure-cured on the surface of the reinforcing pulp layer; And
    상기 백 커버의 일면에 결합되는 디스플레이 패널;을 포함하는 디스플레이 장치.And a display panel coupled to one surface of the back cover.
  10. 제9항에 있어서,10. The method of claim 9,
    상기 백 커버의 전면 가장자리를 따라 결합되는 미들 프레임;을 더 포함하고,And a middle frame coupled along the front edge of the back cover,
    상기 디스플레이 패널은 상기 미들 프레임을 매개로 상기 백 커버에 결합되는 것을 특징으로 하는 디스플레이 장치.Wherein the display panel is coupled to the back cover via the middle frame.
  11. 제9항에 있어서, 상기 백 커버는,10. The back cover according to claim 9,
    상기 디스플레이 패널을 결합시키는 패널부;A panel unit for coupling the display panel;
    상기 패널부의 하측에서 소정의 경사를 가지면서 연장되는 연결부; 및A connecting portion extending from the lower side of the panel portion with a predetermined inclination; And
    상기 연결부의 단부에서 수평 방향으로 연장되는 받침부;를 포함하여,And a support portion extending horizontally at an end of the connection portion,
    스탠드 일체형으로 구성되는 것을 특징으로 하는 디스플레이 장치.Wherein the stand is integrally formed.
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