WO2019221460A1 - Dispositif d'affichage utilisant une couche de régulation d'adhérence - Google Patents

Dispositif d'affichage utilisant une couche de régulation d'adhérence Download PDF

Info

Publication number
WO2019221460A1
WO2019221460A1 PCT/KR2019/005699 KR2019005699W WO2019221460A1 WO 2019221460 A1 WO2019221460 A1 WO 2019221460A1 KR 2019005699 W KR2019005699 W KR 2019005699W WO 2019221460 A1 WO2019221460 A1 WO 2019221460A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
pattern
display device
adhesive
adherend
Prior art date
Application number
PCT/KR2019/005699
Other languages
English (en)
Korean (ko)
Inventor
김영수
Original Assignee
Kim Young Su
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020190054222A external-priority patent/KR102241293B1/ko
Application filed by Kim Young Su filed Critical Kim Young Su
Priority to JP2020562570A priority Critical patent/JP7429651B2/ja
Priority to CN201980030564.0A priority patent/CN112088092A/zh
Priority to US17/051,953 priority patent/US11511516B2/en
Publication of WO2019221460A1 publication Critical patent/WO2019221460A1/fr

Links

Images

Classifications

    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/26—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer which influences the bonding during the lamination process, e.g. release layers or pressure equalising layers
    • 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
    • B32B7/06—Interconnection of layers permitting easy separation
    • 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
    • B32B7/14—Interconnection of layers using interposed adhesives or interposed materials with bonding properties applied in spaced arrangements, e.g. in stripes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets

Definitions

  • the present invention relates to a display device, and more particularly, to a display device that can be attached to and detached from a curved surface or a plane by adjusting an adhesive force by an adhesive control layer.
  • a display such as a liquid crystal display (LCD), an organic light emitting diode (OLED), a micro LED, and an electrophoresis (EPD) forms a screen.
  • Displays are widely used in mobile devices such as mobile phones, smartphones and tablets, or in information processors such as ATMs and kiosks.
  • the display device employs a portable device with various functions.
  • an attachment material such as a protective sheet (protective film or protective glass), a window, a circuit board, a touch screen, a rear cover, and the like is detached from the adherend.
  • the protective sheet as an attachment may be a window of the adherend
  • the window as an attachment may be a touch screen of the adherend
  • the touch screen as the attachment may be a display of the adherend
  • the back cover as an attachment may be detachable to the display of the adherend.
  • window glass breakage is a serious problem that corresponds to 20-30% of the shipment volume. If the window glass breaks, it takes a lot of money and effort to replace it, removing the broken window and playing it with most expensive touchscreens and displays.
  • the regeneration process is not automated worldwide and proceeds by hand. In addition, the regeneration process remains a serious problem such as generating a large amount of electronic waste and proceeding to a process harmful to the human body.
  • Korean Patent No. 10-1574923 solves the above problem by attaching and detaching a window.
  • the attachment material for example, the protective sheet is attached to and detached from the curved display device
  • lift and bubbles are generated in the curved portion with low adhesion. If high adhesion is used, bubbles are difficult to remove and reattachment is difficult.
  • applying a relatively thick protective sheet spring back phenomenon occurs.
  • the foldable and rollable display devices (hereinafter, flexible display devices), which are recently becoming an issue, can be folded or rolled up, so they are structurally fragile, easily broken, and scratches easily occur.
  • a flexible display regeneration of the window due to breakage and scratching of the window is more complicated, more costly, and generates a large amount of electronic waste than reproducing flat, 2.5D, curved displays. It must go through a process that is harmful to the human body. Accordingly, the role and function of the protective sheet in the flexible display device is important. However, when the conventional protective sheet is used, the folding part is lifted in the foldable display device and the start part, the edge, the end part, etc. are generated in the rollable display device.
  • the present invention has been made in an effort to provide a display device using an adhesive control layer that is excellent in scratch resistance, easy to discharge bubbles, is easily attached and detached, and is stably attached regardless of flat and curved shapes.
  • One example of a display device using a pressure-sensitive adhesive layer for solving the problems of the present invention includes an adhesive and an adhered material to which the adhesive is attached, and a removable layer positioned on any one of the adhesive or the adhered material;
  • the detachable layer is attached and detached, and includes an adhesion control layer positioned on any one of the adhesion material and the adherend.
  • the adhesion control layer is disposed on one surface of any one of the adhesion material or the adherend and is composed of a flat layer covering the entire surface of the one surface and a pattern layer disposed on the flat layer, the flat layer and the pattern The adhesion of the layers to the detachable layer is different.
  • the attachment material may be at least one selected from a component or a protective sheet constituting the display device.
  • the adherend may be at least one selected from components or protective sheets constituting the display device.
  • the adherend may have a flat or curved surface or a combination thereof.
  • the adherend may be foldable, rollable, or flexible.
  • the flat layer and the pattern layer is at least one of a hard coating layer, a digital printing layer, a coating layer for adjusting the contact angle, a deposition layer, a fine irregularity layer including fine roughness or a surface modification layer Can be.
  • the pattern layer may include a first pattern exposing the flat layer.
  • the pattern layer may include a second pattern positioned between the first patterns and not in contact with the first pattern, and the adhesive force of the first and second patterns may be different from each other in the adhesive layer depending on the position.
  • the pattern layer includes a third pattern positioned between the first pattern and in contact with the first pattern, wherein the adhesive force of the first and third patterns is different from each other in the adhesive layer with the detachable layer depending on the position.
  • the pattern layer may include a first pattern exposing the flat layer, a second pattern positioned between the first pattern and not in contact with the first pattern, and a third pattern positioned between the first pattern and in contact with the first pattern. It is made of any one or a combination of the patterns, the first to third patterns have different adhesive strengths with the detachable layer depending on their position.
  • the pattern layer may be formed in a strip form, a grid form, an island form, a fence form or a combination thereof.
  • the pattern layer may be a transparent layer or a translucent layer or a combination thereof.
  • the pattern layer may be embodied as letters, logos, marks or images. Display device using a pressure-sensitive adhesive layer, characterized in that.
  • the detachable layer may be in the form of a pattern consisting of an adhesive layer and a cured layer.
  • the detachable layer may be formed of any one of a coating, a sheet, and a surface modification.
  • Another example of a display device using a pressure-sensitive adhesive layer for solving the problems of the present invention includes an adhesive and an adherend to which the adhesive is attached, and a detachable layer and the adhesive layer positioned on any one of the adhesive or the adherend
  • the detachable layer is detachably attached, and includes an adhesion control layer positioned on either the adhesive or the adherend.
  • the adhesion control layer is made of a pattern layer disposed on one surface of any one of the adhesive material or the adherend, the adhesion of the adherend and the pattern layer to the detachable layer is different from each other.
  • the scratch resistance is excellent, the bubble is easy to discharge, detachment occurs properly, flat, curved surface Regardless of the shape of the attached stably.
  • the attachment material can be easily removed and replaced as needed without a separate regeneration process.
  • FIG. 1 is an exploded cross-sectional view showing a first display device according to the present invention.
  • FIG. 2 is an exploded cross-sectional view showing a second display device according to the present invention.
  • FIG. 3 is an exploded cross-sectional view showing a third display device according to the present invention.
  • FIG. 4 is an exploded cross-sectional view illustrating a fourth display device according to the present invention.
  • FIG. 5 is a plan view illustrating examples of an adhesive control layer applied to display devices according to the present invention.
  • the embodiment of the present invention includes a pressure-sensitive adhesive control layer on the adhesive or adherend, the scratch resistance is excellent, easy to discharge the bubble, detachment occurs properly, regardless of the shape of the plane and curved stably It presents a display device to be attached.
  • the structure of the adhesion control layer will be described in detail, and the process of adjusting the adhesion of the adherend through the adhesion control layer will be described in detail.
  • the display device applied to the embodiment of the present invention refers to a mobile device, an information processing terminal, a television, and the like.
  • the mobile device may be a mobile phone, a smartphone, a tablet, or the like, and the information processing terminal may be an ATM or a kiosk.
  • the display device may be flat or flat but bent, or may be flexible.
  • the image processing device essentially includes a window, a touch screen, and a display.
  • the window is a window for all image processing devices such as a window of a mobile device, a window of an information processing terminal, and a television.
  • the touch screen and the display also refer to the touch screen and the display applied to all image processing devices.
  • the display device may be flat, curved, or a mixture thereof. According to the shape of the window, the display device has been developed into 2D (planar), 2.5D (front edge curved surface, back plane), and 3D (curved surface, edge). Recently, a foldable display device that can be folded or unfolded and a rollable display device that can be wound have emerged.
  • the foldable and rollable display device is a kind of flexible display device.
  • the display device applied to the embodiment of the present invention includes both flat or curved surfaces or a mixture thereof, such as 2D, 2.5D, 3D, and flexible.
  • the display device of the present invention basically includes a display, a touch screen, and a window, and a touch screen cover layer may be attached to the touch screen.
  • the touch screen cover layer may be a polarizing film may take its role, and a rear cover may be attached to the opposite side of the window with respect to the display.
  • elements constituting the display device of the present invention essentially include a display, a touch screen, and a window, and may optionally include at least one of a touch screen cover layer, a polarizing film, and a rear cover.
  • additional elements such as printing films, may be further added to the display device.
  • the display, the touch screen, the window, the touch screen cover layer, the polarizing film, the back cover, and other additional elements are collectively referred to as components that constitute the display device.
  • the protective sheet is a protective film made of a polymer film, a protective glass utilizing tempered glass, or a combination thereof.
  • the protective sheet is attached to the window of the display device to prevent the window from being broken or scratching. Accordingly, the protective sheet is called an additional element added to the display device.
  • FIG. 1 is an exploded cross-sectional view illustrating a first display device 100 according to an exemplary embodiment of the present invention.
  • the drawings are not strictly expressed and may have components that are not shown in the drawings for the convenience of description.
  • the first display device 100 largely includes an attachment material 10 and an adherend 12, and the attachment material 10 is attached to the adherend 12.
  • the attachment material 10 may include a rear cover, a window, a window printed or coated on the back, a window assembled with a polarizing film on the back, a window assembled with a touch screen and a polarizing film on the back, and other additional elements. At least one selected from the constituent elements or the protective sheet.
  • the rear cover is disposed opposite the window to protect the display, and a material such as transparent tempered glass and opaque plastic is applied.
  • the adherend 12 is a window, or a display device including a back cover or a polarizing film cover layer without a back cover, a polarizing film, a touch screen cover layer, a touch screen, a display or a display device including any one or more, and other additional elements. At least one selected from the elements constituting the display device or the protective sheet.
  • the adhesive material 10 On one side of the adhesive material 10, there is a detachable layer 11 formed by coating, sheet or surface modification, and on one side of the adherend 12, an adhesion control layer (a) is present to face the detachable layer 11. do.
  • the detachable layer 11 of the protective sheet which is the adhesive material 10 is the adhesion control layer (a) on the window which is the adherent 12, and the detachable layer 11 of the window which is the adhesive material 10 is the adherent material.
  • the detachable layer 11 of the rear cover may be detachably attached to the adhesion control layer (a) of the display, which is the adherend 12.
  • the detachable layer 11 and the adhesion control layer a may be disposed on a plurality of components, such as a protective sheet and a window, in one display device.
  • the protective sheet includes a transparent substrate, and when the transparent substrate is made of tempered glass, a scattering prevention film for preventing the scattering of the tempered glass is provided.
  • the transparent substrate and the window of the protective sheet can be used without limitation as long as it is a transparent material.
  • it may include a glass substrate or a plastic substrate.
  • the glass substrate may be tempered glass
  • the plastic substrate may be polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyether sulfone (PES), polyimide (PI), polyarylate (PAR), polycarbonate (PC), or PMMA (PMMA).
  • PET polyethylene terephthalate
  • PEN polyethylene naphthalate
  • PES polyether sulfone
  • PI polyimide
  • PAR polyarylate
  • PC polycarbonate
  • PMMA PMMA
  • polymethyl methacrylate) or COC (cycloolefin copolymer) may include any one or more than one.
  • the window may also
  • the window may be transparent or have a printed layer expressing various functions.
  • the printing layer may be applied to any one or any one or more coating, such as transparent, translucent or color.
  • the print layer may be formed by inkjet printing using silk printing or UV or inkjet printing or transfer using thermosetting.
  • the transparent substrate and the window may be formed with a functional coating layer having characteristics such as shielding, antireflection, blue light blocking, electromagnetic wave blocking, privacy, and the like.
  • the functional coating layer may be formed by a dry coating such as wet coating and deposition by applying a coating liquid.
  • the touch screen is a conductive pattern formed on one side or both sides of the insulating layer made of metal oxide or plastic.
  • the conductive pattern is mainly applied to a metal oxide, and the metal oxide includes ITO, ATO, ZnO, or Cu, conductive polymer or silver nanowire.
  • the touch screen cover layer prevents the touch screen from being damaged by impact or contamination.
  • the cover layer may be used without limitation as long as it is a transparent material. For example, it may include a glass substrate or a plastic substrate.
  • the glass substrate may be tempered glass or non-tempered glass
  • the plastic substrate may also be polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyether sulfone (PES), polyimide (PI), polyarylate (PAR), PC (polycarbonate), PMMA (polymethyl methacrylate) or COC (cycloolefin copolymer) may include any one or more.
  • Plastic substrates are more preferred.
  • the thickness of the cover layer may be sufficient so that the touch screen is not damaged in the process of using the first device 100.
  • the polarizing film is a film having a property of passing or blocking vertical or horizontal polarization of incident light. It is an optical film used for thin-film transistor liquid crystal display devices (TFT-LCD) such as notebook computers and monitors, filters for camera special effects, stereoscopic glasses, and OLED visibility improvement.
  • TFT-LCD thin-film transistor liquid crystal display devices
  • the intensity of light emitted from the backlight of the LCD module is uniform in all directions, but the polarizing film transmits only the light oscillating in the same direction as the polarization axis, and absorbs or reflects the light in the specific direction. It plays a role in making polarization.
  • the polarization passes the LCD liquid crystal, the brightness of the pixel is changed by electrically adjusting the alignment direction of the liquid crystal for each pixel.
  • the display includes a liquid crystal display (LCD), a light emitting diode (LED), an organic light emitting diode (OLED), a micro LED, an electrophoretic display (EPD), and also uses quantum dots.
  • LCD liquid crystal display
  • LED light emitting diode
  • OLED organic light emitting diode
  • EPD electrophoretic display
  • the rear cover is disposed on the opposite side of the window to protect the display, and may be made of transparent tempered glass, opaque plastic, or the like.
  • the detachable layer 11 is present on the adhesive 10, and the adhesion control layer a according to the embodiment of the present invention is present on the adherent 12. Although not shown, the detachable layer 11 and the adhesion control layer a may be interchanged with each other.
  • the detachable layer 11 may be used in various ways within the technical spirit of the present invention, but may be implemented through coating, sheeting, and surface modification. In the case of the coating, an adhesive or a mixture thereof or a copolymer thereof in which a thermosetting resin or a thermosetting resin UV curable resin, which is an acrylic polymer, a silicone polymer or a urethane polymer, and a crosslinking agent is mixed.
  • functional materials such as silica gel, nanoparticles, and antistatic agents may be mixed with the detachable layer 11 to improve physical properties of the detachable layer 11. Further, the optical properties may be improved by adding particles forming a quantum dot to the detachable layer 11.
  • the detachable layer 11 may be implemented in the form of a sheet rather than a coating.
  • a (meth) acrylic acid ester monomer having a hydrocarbon group having 1 to 12 carbon atoms (b) a hydroxyl group-containing (meth) acrylic acid ester monomer, a monomer having an (c) amide group, and (d) a vinyl ester
  • resin acid value is 0.1 mgKOH / g or less
  • dielectric constant is used for the adhesive composition for 3-6 touch panels.
  • the desorption layer 11 is a sheet of a pressure-sensitive adhesive composition containing an acrylic polymer having a specific molecular weight and a crosslinking agent that does not contain an acid component containing alkoxyalkyl acrylate as a main monomer, and in a solid content ratio, 65 to 85 mass% of (meth) acrylic resin. And 10 to 30% by mass of polyoxyalkylene polyol, 1.0 to 5.0% by mass of polyisocyanate, and 0.005 to 0.1% by mass of tin catalyst, and have an acid value of 0 to 5 mgKOH / g, (meth) acrylic
  • the transparent adhesive sheet etc. whose weight average molecular weights of resin are 100,000-600,000, and the number average molecular weight of (B) polyoxyal cheylene polyol are 500-1500 are mentioned. Furthermore, hydrogel type sheets are possible.
  • the detachable layer 11 may be formed by surface modification.
  • Surface modification is to change the adhesion of the surface of the transparent polymer film to 0.1gf / 25mm to 500gf / 25mm through plasma or corona treatment or their continuous treatment.
  • the continuous treatment is preferably a plasma treatment after the corona treatment.
  • the polymer film may be, for example, polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyether sulfone (PES), polyimide (PI), polyarylate (PAR), polycarbonate (PC), polymethyl methacrylate (PMMA), or COC ( cycloolefin copolymer) may include any one or more than one.
  • plasma methods such as atmospheric pressure plasma, reduced pressure plasma, and corona plasma are used. That is, not only chemically cleans the surface in order to improve the adhesive force of the polymer film, but also activates the surface to remove the organic matter on the surface by chemical and physical reactions.
  • the polymer film subjected to plasma treatment uses high energy of ions or electrons to change chemical bonds in the region within several micrometers from the surface. In addition, a certain thickness of the surface is scraped off to increase the contact angle.
  • the surface of the polymer film is chemically or physically activated to react well with other materials.
  • the surface modification such as plasma treatment is performed such as surface cleaning such as removal of fine foreign substances, modification of surface roughness, formation of polar functional groups, and the like.
  • the corona treatment using the corona discharge technology to improve the adhesion of the surface of the polymer film to be treated.
  • the corona treatment may form a crosslinked structure between the polymer molecules in addition to the chemical polar groups as described above, thereby improving adhesion.
  • Corona surface treatment typically places a polymer film between the two electrodes where the corona discharge is made, and generates a corona discharge by supplying a constant power to both electrodes, thereby modifying the surface adhesion of 0.1gf / 25mm to 500gf / 25mm. .
  • the detachable layer 11 When the adhesive force of the detachable layer 11 is about 0.1 gf / 25 mm-500 gf / 25 mm, the detachable layer 11 has self adhesive force.
  • the self-adhesive force is a property that the detachable layer 11 adheres to itself without bubbles even if only the detachable layer 11 is placed on the adhesion control layer (a).
  • Adhesive force according to an embodiment of the present invention may vary depending on the presence of the adhesion control layer (a).
  • the adhesive force in the case of the adhesive control layer (a) is 0.5gf / 25mm to 500gf / 25mm, but the adhesive force in the absence of the adhesive control layer (a) is 0.1gf / 25mm to 200gf / 25mm.
  • the adhesion control layer (a) When there is a detachable layer 11 of the same material and thickness, if the adhesion control layer (a) is present, it is easier to attach the detachable layer 11 without bubbles. In addition, under the influence of the adhesion control layer (a), the detachment of the detachable layer 11 occurs relatively easily.
  • the removable layer 11 can also be a pattern form.
  • the detachable layer 11 in the form of a pattern includes an adhesive layer and a cured layer, and the adhesive layer occupies 5 to 95% of the area of the detachable pattern.
  • the adhesive layer and the cured layer are present in a pattern form.
  • the adhesive layer may be cured by heat or ultraviolet rays.
  • the adhesive layer and the cured layer may be patterned in at least one of the band shape, the grid shape, the island shape, or the fence shape in a square shape or a wave shape, or a combination thereof.
  • the detachable layer 11 is attached by the adhesive force of A, the adhesive force of the detachable layer 11 becomes B by heat / ultraviolet curing, and the detachable layer 11 can be easily removed as necessary.
  • Adhesive force A and B of the detachable layer 11 may have a difference of 50 g / inch or more.
  • the adhesion control layer (a) is formed on the entire surface of the adherend 12.
  • the flat layer 20 and the first pattern 21 are sequentially stacked.
  • the flat layer 20 is not formed with a pattern, and is formed on the entire surface of the adherend 12.
  • the first pattern 21 exposes the flat layer 20.
  • the flat layer 20 and the first pattern 21 may be variously modified in order to control the adhesion to the detachable layer 11.
  • the flat layer 20 and the first pattern 21 have different adhesive strengths to the removable layer 11. In other words, the adhesive force of the flat layer 20 is larger or smaller than that of the first pattern 21.
  • the flattening layer 20 and the first pattern 21 may be any one of a hard coating layer, a digital printing layer, a coating layer for adjusting a contact angle, a deposition layer, a fine irregularity layer including fine irregularities, and a surface modification layer.
  • the cured layer may be a thermosetting hard coating layer or an ultraviolet curing hard coating layer.
  • the thermosetting hard coating layer can be variously selected within the scope of the present invention.
  • an acrylic resin containing a hydroxyl group an acrylic resin having a weight average molecular weight of 100,000 to 1,000,000, a resin composition containing block isocyanate as a main component, a composition containing a hydroxyl group containing acrylic resin and block isocyanate as essential components, and an isocyanate group And compounds containing two or more functional groups in one molecule and a block isocyanate.
  • the ultraviolet curing hard coat layer is made by blending various acrylic units and an ultraviolet curing catalyst, for example, a polyurethane resin, an epoxy resin or a polyester resin.
  • an ultraviolet curing catalyst for example, a polyurethane resin, an epoxy resin or a polyester resin.
  • a urethane or acrylate oligomer, a reactive monomer, a photoinitiator and a leveling agent are mixed as the ultraviolet reactive coating material.
  • Urethane acrylate oligomers contain aliphatic, cyclic aliphatic, aromatic compounds or oligomers of these compounds, and have a chemical formula in which polyester polyols or polyether polyols are contained on the molecular structure.
  • the reactive monomer trimethyl propane triacrylate, hexanediol diacrylate, pentaerystilol triacrylate, dipentaerythrol hexaacrylate are mixed and adjusted in an appropriate ratio in consideration of hardness and adhesion.
  • the photoinitiator uses a conventional polymerization initiator activated by ultraviolet rays, and in particular, hydroxycyclohexylphenyl ketone, benzophenol, and phenyl-2-hydroxy-2-phenyl ketone.
  • the digital printing layer is a digitally printed layer.
  • the coating layer for adjusting the contact angle may be coated with an organosilicon compound as an example of the coating to increase the adhesion by reducing the contact angle.
  • coatings that lower the adhesive force by increasing the contact angle may include anti-fingerprint, antifouling, and slip properties, and deposit titania (TiO 2 ) or silica (SiO 2 ) on the adherend 12 and then deposit the deposited material.
  • the ash 12 may be formed by coating a fluorine resin, a silicone resin, or a mixture thereof. In this case, the fluorine-based resin or the silicone-based resin may be formed by ECC (Easy Cleaning Coating) method.
  • the deposition layer is gold (Au), silver (Ag), platinum (Pt), silicon (Si), copper (Cu), palladium (Pd), nickel (Ni), tungsten (W), iron (Fe), cobalt (Co), titanium (Ti), chromium (Cr), manganese (Mn), zinc (Zn), zirconium (Zr), molybdenum (Mo), iridium (Ir), ruthenium (Ru), tantalum ( Ta) or an alloy thereof or an oxide thereof, or a single layer or a plurality of layers.
  • the deposition layer increases adhesion to the detachable layer 11.
  • the adhesion of the deposition layer may be controlled by the size and shape of the pattern. The smaller the size and shape of the pattern, the greater the adhesion.
  • the fine concave-convex layer may be formed as a shape of any one selected from a rectangle, a triangle, and a circular cross section, or made of beads or beads and a binder. That is, the cross-section of the fine concave-convex layer may be angled, curved, or a combination thereof.
  • the fine concave-convex layer is translucent and the light transmittance is lowered. Since the detachable layer 11 penetrates into the uneven layer, the bonding force of the detachable layer 11 is increased.
  • the surface modification layer is a surface modification of the surface of the transparent polymer film through a plasma or corona treatment or a continuous treatment thereof, to increase the adhesion to the detachable layer (11).
  • FIG. 2 is an exploded cross-sectional view illustrating a second display device 200 forming a plane according to an exemplary embodiment of the present invention.
  • the second display device 200 is the same as the first display device 100 except for the adhesive control layer b. Accordingly, detailed description of the same reference numerals will be omitted.
  • the second display device 200 includes a flat layer 20, a first pattern 21, and a second pattern 22.
  • the second pattern 22 is positioned between the first pattern 21, and the first and second patterns 21 and 22 are laid on the flat layer 20.
  • the flat layer 20 and the first and second patterns 21 and 22 may have a hard coating layer, a coating layer for adjusting the contact angle, a deposition layer, and a fine uneven layer including fine roughness. And a surface modification layer.
  • the adhesion of the flat layer 20 and the first and second patterns 21 and 22 are different with respect to the removable layer 11, respectively.
  • the flat layer 20 has a larger or smaller adhesive force than the first and second patterns 21 and 22, and the first pattern 21 has a larger or smaller adhesive force than the second pattern 22.
  • FIG. 3 is an exploded cross-sectional view illustrating a third display device 300 forming a plane according to an exemplary embodiment of the present invention.
  • the third display device 300 is the same as the first display device 100 except for the adhesive control layer c. Accordingly, detailed description of the same reference numerals will be omitted.
  • the third display device 300 does not include the flat layer 20 and includes the first pattern 21.
  • the second pattern 22 is positioned between the first patterns 21 and is separated from the first pattern 21.
  • the first and second patterns 21 and 22 may include any one of a hard coating layer, a coating layer for adjusting a contact angle, a deposition layer, a fine irregularity layer including fine irregularities, and a surface modification layer. It can be one.
  • the first and second patterns 21 and 22 have different adhesive strengths to the removable layer 11, respectively. In other words, the first pattern 21 has a larger or smaller adhesive force than the second pattern 22. If necessary, the adhesion control layer c of the third display device 300 may be formed of only the first pattern 21 without the second pattern 22.
  • FIG. 4 is an exploded cross-sectional view illustrating a fourth display device 400 forming a plane according to an exemplary embodiment of the present invention.
  • the fourth display device 400 is the same as the first display device 100 except for the adhesion control layer d. Accordingly, detailed description of the same reference numerals will be omitted.
  • the fourth display device 400 does not have the flat layer 20 and includes the first and third patterns 21 and 23.
  • the third pattern 23 is positioned between the first patterns 21 and is in contact with the first pattern 21.
  • the first and third patterns 21 and 23 may include any one of a hard coating layer, a coating layer for adjusting a contact angle, a deposition layer, a fine irregularity layer including fine irregularities, and a surface modification layer. It can be one.
  • the first and third patterns 21 and 23 have different adhesive strengths to the removable layer 11, respectively. In other words, the first pattern 21 has a larger or smaller adhesive force than the third pattern 23.
  • the flat layer 20 and the first to third patterns 21, 22, and 23 are conceptually represented.
  • the flat layer 20 and the first to third patterns 21, 22, and 23 are given as examples within the scope of the present invention that the adhesive strengths are different from each other.
  • the adhesion control layer may include at least one selected from the first pattern 21, the second pattern 22, and the third pattern 23, with and without the flat layer 20. Can be combined.
  • the flat layer 20 and the first to third patterns 21, 22, and 23 have adhesive strength, forms of the first to third patterns 21, 22, and 23, and first to third patterns 21, 22, and 23.
  • the first to third patterns 21, 22, and 23 are elements constituting the pattern layer, and are divided according to their shapes. Specifically, the pattern exposes the flat layer 20 or the adherend 12, and the second pattern 22 exists between the first patterns 21 without being in contact with the first pattern 21. The third pattern 23 is present between the first patterns 21 while in contact with the first pattern 21.
  • the first to third patterns 21, 22, and 23 may have their own adhesive strengths different from each other.
  • the first pattern 21 may have different adhesive strengths depending on its position.
  • the adjustment of the adhesive force may include the shape, the area, the material of the outer layer, the surface state, the material, the size, the thickness of the adhesive material 10, the material, the size, the thickness of the adherend 12, and the removable layer 11. It depends on the adhesive force, the material of the adhesion control layers (a, b, c, d), the adhesion of the adhesion control layers (a, b, c, d) and the like.
  • the pattern layer may be a transparent layer, a translucent layer, or a combination thereof.
  • the translucent layer may express colors and vary transparency according to patterns or positions.
  • the pattern layer may be implemented in the form of letters, logos, marks, images.
  • the translucent layer may be implemented by any one or any method of vacuum deposition, digital printing, laser marking, etching, plating.
  • FIG. 5 is a plan view illustrating examples of the adhesion control layers a, b, c, and d applied to the display devices 100, 200, 300, and 400 according to an exemplary embodiment of the present invention.
  • the adhesion control layer a, b, c, d
  • the adhesion control layer (a, b, c, d) utilizes a pattern of various forms in the plane. Specifically, a B pattern having a stripe shape and extending in the longitudinal direction of the adhesion control layers (a, b, c, d), a B pattern having the same adhesive strength as the A pattern, and a C pattern having a single island shape with an adhesive force, A plurality of island patterns, D pattern, E pattern with expanded C pattern, F pattern with the same adhesive strength as E pattern, G pattern with fence shape, H pattern with G pattern and adhesive strength with fence shape, adhesion control I patterns disposed at the corners of the layers (a, b, c, d) and the like. Examples of patterns A through I utilize the flat layer 20 and the first through third patterns 21, 22, and 23 described above.
  • examples of the adhesion control layers (a, b, c, d) are shown.
  • An example of arranging the patterns may be a band form (a), a grid form (b), an island form (a, e, f), a fence form (c), or a combination thereof (c, d).
  • the pattern of the adhesion control layers (a, b, c, d) and the arrangement of the patterns are not limited to the above examples, and any person having ordinary skill in the art without departing from the gist of the present invention may vary. It can be carried out by modification.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Adhesive Tapes (AREA)

Abstract

L'invention concerne un dispositif d'affichage utilisant une couche de régulation d'adhérence, qui présente une excellente résistance aux rayures, qui évacue facilement des bulles d'air, qui permet une fixation et un décollage appropriés et qui est fixée de manière stable indépendamment du fait qu'une surface est plate ou incurvée. Le dispositif comprend : un élément adhésif ; un élément adhérent auquel l'élément adhésif est fixé ; une couche amovible disposée sur l'élément adhésif ou sur l'élément adhérent ; et une couche de régulation d'adhérence à laquelle la couche amovible est fixée amovible et qui est disposée sur l'élément adhésif ou sur l'élément adhérent, la couche de régulation d'adhérence étant disposée sur une surface de l'élément adhésif ou de l'élément adhérent et comportant une couche plate recouvrant l'ensemble de la surface et une couche de motif disposée sur la couche plate, et la couche plate et la couche de motif présentant des forces adhésives différentes de celle de la couche amovible.
PCT/KR2019/005699 2018-05-14 2019-05-13 Dispositif d'affichage utilisant une couche de régulation d'adhérence WO2019221460A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2020562570A JP7429651B2 (ja) 2018-05-14 2019-05-13 粘着調整層を用いた表示装置
CN201980030564.0A CN112088092A (zh) 2018-05-14 2019-05-13 利用粘结调节层的显示装置
US17/051,953 US11511516B2 (en) 2018-05-14 2019-05-13 Display device using adhesion control layer

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
KR20180054648 2018-05-14
KR10-2018-0054648 2018-05-14
KR10-2018-0079134 2018-07-09
KR20180079134 2018-07-09
KR1020190054222A KR102241293B1 (ko) 2018-05-14 2019-05-09 점착조절층을 이용한 표시장치
KR10-2019-0054222 2019-05-09

Publications (1)

Publication Number Publication Date
WO2019221460A1 true WO2019221460A1 (fr) 2019-11-21

Family

ID=68540569

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2019/005699 WO2019221460A1 (fr) 2018-05-14 2019-05-13 Dispositif d'affichage utilisant une couche de régulation d'adhérence

Country Status (1)

Country Link
WO (1) WO2019221460A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140096596A (ko) * 2013-01-28 2014-08-06 삼성디스플레이 주식회사 표시 장치 및 그 제조 방법
JP2015184638A (ja) * 2014-03-26 2015-10-22 リンテック株式会社 ハードコートフィルム
KR20160120436A (ko) * 2015-04-08 2016-10-18 김영수 탈부착층을 가진 디스플레이 장치 및 그 제조방법
KR20180037102A (ko) * 2016-10-03 2018-04-11 김영수 탈부착 조절을 위한 미세돌기를 포함하는 디스플레이 장치 및 그 제조방법
KR20180037108A (ko) * 2016-10-03 2018-04-11 김영수 탈부착 패턴을 가진 디스플레이 장치
KR20180037097A (ko) * 2016-10-03 2018-04-11 주식회사 맥스젠테크놀로지 탈부착 유동층을 가진 디스플레이 장치

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140096596A (ko) * 2013-01-28 2014-08-06 삼성디스플레이 주식회사 표시 장치 및 그 제조 방법
JP2015184638A (ja) * 2014-03-26 2015-10-22 リンテック株式会社 ハードコートフィルム
KR20160120436A (ko) * 2015-04-08 2016-10-18 김영수 탈부착층을 가진 디스플레이 장치 및 그 제조방법
KR20180037102A (ko) * 2016-10-03 2018-04-11 김영수 탈부착 조절을 위한 미세돌기를 포함하는 디스플레이 장치 및 그 제조방법
KR20180037108A (ko) * 2016-10-03 2018-04-11 김영수 탈부착 패턴을 가진 디스플레이 장치
KR20180037097A (ko) * 2016-10-03 2018-04-11 주식회사 맥스젠테크놀로지 탈부착 유동층을 가진 디스플레이 장치

Similar Documents

Publication Publication Date Title
KR102241293B1 (ko) 점착조절층을 이용한 표시장치
WO2016117820A1 (fr) Dispositif d'affichage comprenant une fenêtre pouvant être fixée/détachée, et son procédé de fixation/détachement
JP5978561B2 (ja) 表示用前面板、表示用前面板の製造方法、表示装置および表示装置の製造方法
JP5846473B2 (ja) 表示用前面板、表示用前面板の製造方法、表示装置および表示装置の製造方法
KR20160120436A (ko) 탈부착층을 가진 디스플레이 장치 및 그 제조방법
WO2019059546A1 (fr) Dispositif d'affichage comportant un motif attachable/détachable
US11413849B2 (en) Transparent member having fine uneven portions and applied to portable device
KR20200021407A (ko) 배면커버를 포함하는 탈부착 표시장치
US11324133B2 (en) Attachable/detachable display device comprising polarizing film
WO2019103439A1 (fr) Dispositif d'affichage pouvant être fixé/détaché et comprenant un film polarisant
WO2012008230A1 (fr) Élément de filtre de couleur pour papier électronique, papier électronique, procédé pour produire un élément de filtre de couleur pour papier électronique, et procédé pour fabriquer un papier électronique
KR102323973B1 (ko) 표면개질된 탈부착층을 이용한 표시장치
WO2019221460A1 (fr) Dispositif d'affichage utilisant une couche de régulation d'adhérence
WO2020013511A1 (fr) Dispositif d'affichage utilisant une couche de détachement/fixation modifiée en surface
KR102283618B1 (ko) 표면개질된 탈부착층을 이용한 표시장치
KR102283619B1 (ko) 표면개질된 탈부착층을 이용한 표시장치
WO2020040489A1 (fr) Dispositif d'indication de fixation/séparation
KR20180037103A (ko) 탈부착 시트를 포함하는 디스플레이 장치
WO2020111642A1 (fr) Module de type séparation de fenêtre d'un dispositif d'affichage vers lequel et à partir duquel une fenêtre détachable est attachée et détachée
WO2021125764A1 (fr) Dispositif d'affichage pouvant être fixé/détaché comprenant une couche d'habillage composite
WO2018117460A1 (fr) Dispositif portable incurvé sur lequel une feuille protectrice est à coller
WO2018101672A1 (fr) Élément transparent ayant de fines parties irrégulières et appliqué à un dispositif portable
WO2019050194A1 (fr) Dispositif d'affichage attachable/détachable ayant une conception de cadran adaptée à la conception d'écran

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19802660

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2020562570

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19802660

Country of ref document: EP

Kind code of ref document: A1