KR20140142904A - A cover sheet for display - Google Patents

A cover sheet for display Download PDF

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Publication number
KR20140142904A
KR20140142904A KR20130064623A KR20130064623A KR20140142904A KR 20140142904 A KR20140142904 A KR 20140142904A KR 20130064623 A KR20130064623 A KR 20130064623A KR 20130064623 A KR20130064623 A KR 20130064623A KR 20140142904 A KR20140142904 A KR 20140142904A
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KR
South Korea
Prior art keywords
cover sheet
display
bezel
adhesive layer
disposed
Prior art date
Application number
KR20130064623A
Other languages
Korean (ko)
Inventor
김양규
노동수
박찬현
김기수
Original Assignee
(주)미코씨엔씨
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Publication date
Application filed by (주)미코씨엔씨 filed Critical (주)미코씨엔씨
Priority to KR20130064623A priority Critical patent/KR20140142904A/en
Publication of KR20140142904A publication Critical patent/KR20140142904A/en

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    • 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
    • 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
    • B32B3/26—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 a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—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 a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • 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
    • 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
    • C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
    • 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
    • C09J169/00—Adhesives based on polycarbonates; Adhesives based on derivatives of polycarbonates
    • 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
    • C09J179/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen, or carbon only, not provided for in groups C09J161/00 - C09J177/00
    • C09J179/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
    • C09J179/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
    • 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
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/402—Coloured
    • B32B2307/4026—Coloured within the layer by addition of a colorant, e.g. pigments, dyes
    • 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
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/412—Transparent
    • 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

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

A cover sheet for display may include an upper adhesive material which includes a surface bonding layer which consists of a surface part having a transparent material, an optical bonding layer arranged on the back surface of the surface part, and a bezel mask layer arranged on the back surface of the surface part to correspond to a bezel region surrounding a view region of outputting an image among the entire surface of the display surface of an electronic device; and a lower adhesive material which consists of an optical double-sided bonding layer arranged on the back surface of the surface bonding layer, a scattering prevention film arranged on the back surface of the optical double-sided bonding layer, and a bonding layer arranged on the scattering prevention film to be attached to the display surface of the electronic device, and is formed to allow the optical bonding layer to correspond to the view region or to be extended to the bezel region, thereby equalizing a part arranged in the view region with a part arranged in the bezel region to have different heights.

Description

{A cover sheet for display}

The present invention relates to a cover sheet for a display, and more particularly to a cover sheet for a display for attaching to a display surface of a mobile electronic device.

In the case of a cover sheet for a display having a reinforcing function, a clear type that is attached to the entire display surface of the electronic device or a viewer area to which an image is output, a clear type that has a transparent structure in the viewer area, And a bezel type having a bezel mask layer on which a bezel mask layer is outputted.

The cover sheet for a bezel type display has a total of five layers including a surface portion, a double-sided adhesive layer for optical, a scattering prevention film, a bezel mask layer, and a bonding portion from the uppermost portion directly touching the user to the lowermost portion attached to the display surface itself .

In addition, if the bezel mask layer has a structure extending to the viewer area, the bezel mask layer may interfere with the operation of the electronic device by interfering with the image output from the viewer area, so that the bezel mask layer is formed only in the bezel area Structure.

Here, when the bezel mask layer is formed only in the bezel region, the viewer region in the portion where the bezel mask layer is formed may have a structure that is an empty space. As described above, if the viewer area has an empty space, a rainbow swelling phenomenon may occur when the cover sheet is touched. Conventionally, UV light is applied to a vacant space of the viewer area or a dot structure is formed to fill a void space mentioned above, thereby preventing rainbow spreading phenomenon.

However, application of the ultraviolet resin mentioned involves a step of using a separate mask layer. That is, in the application of the ultraviolet resin, a separate mask layer is formed, the ultraviolet resin is applied, and then the aforementioned mask layer is removed. Therefore, application of ultraviolet resin has a problem of complicating a process for producing a cover sheet, and may also have a problem of increasing the manufacturing cost of the cover sheet. In addition, when the application of the ultraviolet resin is performed improperly, there is a problem that it is inconvenient to apply the ultraviolet resin again after removing the ultraviolet resin already applied.

In addition, the dot structure is difficult to uniformly form, and a portion where the dot structure is not formed is generated, so that a phenomenon of iridescence may continuously occur at a portion where the dot structure is not formed. Further, There is a problem that the sense of touch may be somewhat disadvantageous.

Therefore, the applicant of the present invention invented a cover sheet for a display which can simplify the manufacturing process and solve the phenomenon of rainbow smearing and the like, and disclose this cover sheet to the Korean Intellectual Property Office at the Patent Application No. 2012-0138059 dated November 30, 2012 Documents ").

However, in the case of the cover sheet for a display disclosed in the cited document, there is a problem that air is not easily discharged from the display surface to the outside when the cover sheet is attached to the back surface of an electronic device.

It is an object of the present invention to provide a cover sheet for a display having a structure capable of easily discharging air from the display surface to the outside when attaching the cover sheet to the display surface of an electronic apparatus.

According to an aspect of the present invention, there is provided a cover sheet for a display, comprising: a surface portion having a transparent material; an optical adhesive layer disposed on a rear surface of the surface portion; A top adhesive layer comprising a bezel mask layer disposed on a rear surface of the surface portion to correspond to a bezel area surrounding the viewer area; And an adhesive layer disposed on a rear surface of the anti-scattering film so as to be adhered to a display surface of the electronic device, wherein the anti-scattering layer is disposed on a rear surface of the anti- The optical adhesive layer may be formed to correspond to the viewer area or may extend to the bezel area so that a portion disposed in the viewer area and a part disposed in the bezel area have different heights can do.

In the cover sheet for a display according to an embodiment of the present invention, the surface portion may include tempered glass, reinforced plastic or reinforced film.

In the cover sheet for a display according to an embodiment of the present invention, the optical adhesive layer may have a transmittance of 90% or more, a reflectivity of 1.0% or less, and a dielectric constant.

In the cover sheet for a display according to an embodiment of the present invention, the optical adhesive layer may include any one selected from the group consisting of polycarbonate, polyimide, and acrylic resin.

In the cover sheet for a display according to an embodiment of the present invention, the bezel mask layer may include a non-transparent pigment so that various colors can be realized.

In the cover sheet for a display according to an embodiment of the present invention, the cover sheet may further include an opening portion having a through-hole structure in a portion corresponding to the bezel region of the electronic device.

In the cover sheet for a display according to an embodiment of the present invention, the optical adhesive layer is formed to have a first height while being disposed on a rear surface of the surface portion to correspond to the viewer area, and the bezel mask layer The lower adhesive layer is formed to have a second height lower than the first height so as to correspond to the viewer, so that the lower adhesive layer has a structure in which a portion disposed in the viewer area protrudes from a portion disposed in the bezel area .

In the cover sheet for a display according to an embodiment of the present invention, the bezel mask layer is formed to have a step structure narrowing in a direction toward the lower adhesive, and the optical adhesive layer has a step structure and a space Or the like.

In the cover sheet for a display according to an embodiment of the present invention, when the cover sheet is attached to the display surface of the electronic device, air is discharged from the display surface to the outside, And at least one air discharge portion having a chamfer structure.

In the cover sheet for a display according to an embodiment of the present invention, the optical adhesive layer is formed on the rear surface of the surface portion so as to extend to the bezel region where the bezel mask layer is formed, May be provided so as to have a concave structure than a portion disposed in the bezel region.

In the cover sheet for a display according to an embodiment of the present invention, when the cover sheet is attached to the display surface of the electronic device, air is discharged from the display surface to the outside, And at least one air discharge portion having a chamfer structure, wherein the air discharge portion has a structure extending from the bezel region to the viewer region.

The cover sheet for a display of the present invention includes an upper adhesive and a lower adhesive, and in particular, in the case of a surface adhesive layer disposed on the rear surface of the surface portion, the optical adhesive layer may be formed to correspond to the viewer area or extend to the bezel area . Accordingly, the lower adhesive may be provided such that the portion disposed in the viewer region and the portion disposed in the bezel region have different heights. That is, the cover sheet for a display of the present invention may be provided to have a stepped structure, and may have a structure in which a viewer region protrudes from a bezel region or a concave structure.

Therefore, when attaching the display cover sheet having the structure in which the viewer area protrudes to the display surface, the attachment is first performed in the viewer area and the attachment in the bezel area is performed later. The existing air can be easily discharged from the display surface to the outside. That is, in the case of the cover sheet for a display according to the present invention, since the viewer region is protruded, the attachment is first made in the viewer region, which is the central region of the display surface, and then the attachment is made to the bezel region, The air existing between the display surface and the cover sheet for display can be easily discharged from the display surface to the outside.

Also, when the cover sheet for display having the concave structure of the viewer area is attached to the display surface, since the user views the center area, the attachment is first performed in the viewer area, The air present between the display surface and the cover sheet for display can be easily discharged from the display surface to the outside.

In addition, the cover sheet for a display of the present invention is provided with an air discharge portion having a chamfer structure at the outermost portion of the lower adhesive, so that air existing between the display surface and the cover sheet for display is attached to the display surface It can be easily discharged.

1 is a schematic view showing an electronic apparatus having a display.
2 is a schematic structural view showing a cover sheet for a display according to an embodiment of the present invention.
3 is a cross-sectional view taken along the line AA in Fig.
4 is an enlarged view of a portion B in Fig.
FIGS. 5 and 6 are views for explaining a state in which the cover sheet for display of FIG. 2 is attached to the display surface of the electronic apparatus of FIG.
Fig. 7 is a view for explaining the portion B in Fig. 4 when the cover sheet for display is attached as shown in Fig. 6. Fig.
8 is a schematic structural view showing a cover sheet for a display according to another embodiment of the present invention.
Figs. 9 and 10 are views for explaining a state in which the cover sheet for display of Fig. 8 is attached to the display surface of the electronic apparatus of Fig. 1. Fig.
FIG. 11 is a view for explaining an air discharge unit provided in the cover sheet for a display of FIG. 8; FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing. In the accompanying drawings, the dimensions of the structures are enlarged to illustrate the present invention in order to clarify the present invention.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a part or a combination thereof is described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

The cover sheet for a display of the present invention may include an upper adhesive and a lower adhesive. The upper adhesive includes a surface portion having a transparent material, an optical adhesive layer disposed on a rear surface of the surface portion, and a bezel disposed on the rear surface of the surface portion so as to correspond to a bezel region surrounding the viewer region, And a surface adhesive layer composed of a mask layer. The lower adhesive may have an optical adhesive layer disposed on the rear surface of the surface adhesive layer, a light-scattering film disposed on the back surface of the optical adhesive double-coated adhesive layer, and an adhesive layer disposed on the rear surface of the anti- .

In particular, in the case of the cover sheet for a display of the present invention, the optical adhesive layer may be formed to correspond to the viewer area or may be formed to extend to the bezel area. Accordingly, the cover sheet for a display of the present invention may be provided such that a portion disposed in the viewer region and a portion disposed in the bezel region have different heights. That is, the cover sheet for a display of the present invention may be provided to have a stepped structure, and may have a structure in which a viewer region protrudes from a bezel region or a concave structure.

Therefore, the cover sheet for a display of the present invention can be sequentially attached from a viewer area of a display surface of an electronic device to a bezel area, rather than being attached to the entire area of the display surface of the electronic device at a time.

In particular, since the cover sheet for a display of the present invention is adhered from a user pressing the central area, the attachment of the cover sheet can be sequentially performed from the viewer area to the bezel area even if the cover sheet for display has a protruding structure or a concave structure Lt; / RTI >

Thus, the cover sheet for a display of the present invention can easily discharge air from the display surface to the outside through sequential attachment as mentioned above.

Hereinafter, a display cover sheet having a structure in which a viewer area protrudes from a bezel area will be described with reference to the drawings, and a cover sheet for display having a viewer area concave structure in comparison with a bezel area.

1 is a schematic view showing an electronic apparatus having a display.

Referring to FIG. 1, examples of the electronic device 100 having a display include mobile electronic devices such as a mobile phone, a smart phone, a tablet phone, and a tablet PC.

The display of the electronic apparatus 100 mentioned above includes a display area 12 including a viewer area 13 in which an image is output and a bezel area 15 surrounding the aforementioned viewer area 13, And a rim surface (11) surrounding the base (12). That is, the display surface 12 of the electronic device 100 in the present invention includes the viewer area 13 and the bezel area 15, and the rim surface 11 includes the display area 12, It may correspond to a case of the electronic apparatus 100 itself surrounding the surface 12.

In addition, a button (not shown), a camera 17, a speaker 19, and the like may be disposed in the bezel area 15 of the display surface 12 of the electronic device 100 mentioned above.

2 is a schematic structural view showing a cover sheet for a display according to an embodiment of the present invention.

2, the cover sheet 200 for a display according to the present invention prevents scratches or the like from being generated on the display surface 12 of the electronic device 100 and prevents the display surface 12 of the electronic device 100 The cover sheet 13a corresponding to and attached to the viewer area 13 of the display surface 12 of the electric device 100 can be attached to the display surface 12 of the electronic device 100 so as to improve durability, And the cover sheet 15a corresponding to and attached to the bezel area 15 may be provided so as to have an integral structure.

The cover sheet 15a corresponding to and attached to the bezel area 15 of the cover sheet 200 mentioned above is provided with a through hole structure (not shown) for exposing the buttons of the electronic device 100, the camera 17, (17a, 19a), respectively. That is, an opening portion (not shown) for exposing the button, an opening portion 17a for exposing the camera 17, an opening portion 19a for exposing the speaker 19, and the like may be provided.

The cover sheet 200 according to the present invention may further include a lower adhesive layer 210 to allow air to be discharged from the display surface 12 when the cover sheet 200 is attached to the display surface 12 of the electronic device 100, And an air discharge portion 18 having a chamfer structure on the outermost portion of the water. In the cover sheet 200 of the present invention, the air discharge portion 18 is provided with at least one outermost portion of the lower adhesive, and the number is not limited thereto. Therefore, air existing between the display surface 12 and the cover sheet 200 can be easily discharged through the air discharge portion 18 when the cover sheet 200 is attached to the display surface 12. [

Hereinafter, the cover sheet 200 for a display of the present invention will be described in detail.

Fig. 3 is a sectional view taken along line A-A of Fig. 2, and Fig. 4 is an enlarged view of a portion B of Fig.

3 and 4, the cover sheet 200 for a display according to the present invention includes a surface portion 21, a surface adhesive layer 27, The optical adhesive double-sided adhesive layer 29, the scattering prevention film 31 and the adhesive layer 33 are sequentially arranged so that the upper adhesive 41 composed of the surface portion 21 and the surface adhesive layer 27, And a lower adhesive 43 composed of an optical double-sided adhesive layer 29, a scattering prevention film 31, and an adhesive layer 33.

In the case of the cover sheet 200 of the present invention, it is possible to protect the cover sheet 200 from being contaminated on the surface portion 21 with the structure of the upper adhesive 41 and prevent traces such as fingerprints from being left The protective film 35 may be further disposed.

And the cover sheet 100 for a display of the present invention may be attached to the bezel area 15 including the viewer area 13 as mentioned above. That is, the cover sheet 100 for a display of the present invention can be attached to the entire display surface 12 of the electronic device 100. [

Therefore, the surface portion 21 mentioned above should have a transparent material. This is because it is impossible to see the viewer area 13 of the display surface 12 of the electronic device 100 when the surface portion 21 is not made of a transparent material.

In addition, since the surface portion 21 is directly touched by the user, it is necessary to prevent the occurrence of scratches and to have durability. Therefore, the surface portion 21 can be made of tempered glass, reinforced plastic, reinforcement film, or the like. Therefore, the surface portion 21 mentioned above can be provided with reinforced glass having a transparent material, reinforced plastic, reinforcement film or the like.

The above-mentioned surface adhesive layer 27 may have an optical adhesive layer 25 and a bezel mask layer 23. Particularly, the optical adhesive layer 25 may be disposed on the rear surface of the surface portion 21 so as to correspond to the viewer region 13 in which an image is output from the entire area of the display surface 12 of the electronic device 100, The display portion 23 may be disposed on the back surface of the surface portion 21 so as to correspond to the bezel region 15 surrounding the aforementioned viewer region 13. [ That is, the optical adhesive layer 25 may be provided so as to be disposed at the rear center portion of the surface portion 21 so as to correspond to the viewer region 13, and the bezel mask layer 23 may be provided so as to cover the optical adhesive layer 25 And may be disposed to surround the rear surface of the surface portion 21 with a surrounding structure. In other words, the surface adhesive layer 27 can be provided as a bezel mask layer 23 surrounding the optical adhesive layer 25 and the optical adhesive layer 25 as a single layer disposed on the rear surface of the surface portion 21.

Since the optical adhesive layer 25 is disposed at a portion corresponding to the viewer area 13 of the display surface 12 as mentioned above, the image output from the viewer area 13 should not be affected. Thus, when the light transmittance of the optical adhesive layer 25 in the present invention is less than about 90%, the image output described above may be hindered. Therefore, the optical transmittance of the optical adhesive layer 25 is preferably about 90% or more, more preferably about 95% or more.

In addition, even if the optical reflectivity of the optical adhesive layer 25 in the present invention exceeds about 1.0%, the image output mentioned above may be hindered. Therefore, the optical reflectivity of the optical adhesive layer 25 is preferably about 1.0% or less, more preferably about 0.5% or less.

In addition, since the optical adhesive layer 25 in the present invention is disposed at the portion where the viewer touches the viewer area 13 of the display surface 12, the electrical characteristics should be good. Therefore, the optical adhesive layer 25 preferably has a dielectric constant.

As described above, the optical adhesive layer 25 in the present invention can have a transmittance of 90% or more, a reflectivity and a dielectric constant of 1.0% or less.

Examples of materials that can be applied to the optical adhesive layer 25 in the present invention include polycarbonate, polyimide, and acrylic resin. These resins may be used alone or in combination of two or more thereof. In particular, the above-mentioned optical adhesive layer 25 may be provided in a gel type having fluidity.

Also, since the bezel mask layer 23 is disposed to correspond to the bezel area 15 of the display surface 12 as mentioned, it need not be transparent. Accordingly, the bezel mask layer 23 can be embodied in various colors and various patterns in order to improve the aesthetic value. Therefore, examples of materials that can be applied to the bezel mask layer 23 in the present invention include non-transparent pigments and the like.

In the case of the surface adhesive layer 27 according to the present invention, the optical adhesive layer 25 may be formed to have the first height L2 and the bezel mask layer 23 may be formed to have the second height L2 lower than the above- May be formed to have a height L1. The optical adhesive layer 25 is formed to have the first height L2 from the rear surface of the surface portion 21 and the bezel mask layer 23 has the second height L1 from the rear surface of the surface portion 21 The portion of the surface adhesive layer 27 where the optical adhesive layer 25 corresponding to the viewer region 13 is formed is positioned on the bezel mask layer 15 corresponding to the bezel region 15 23 projecting downwardly from the portion where the electrodes are formed. That is, in the present invention, the optical adhesive layer 25 is made thicker than the bezel mask layer 23, so that the optical adhesive layer 25 can protrude toward the lower adhesive 43.

The formation of the surface adhesive layer 27 in the protruding structure allows the air existing between the display surface 12 and the cover sheet 200 to adhere to the display surface 12 when the cover sheet 200 is attached to the display surface 12 12 to the outside, and a detailed description thereof will be described later.

In the surface adhesive layer 27 of the present invention, the bezel mask layer 23 may be formed to have a stepped structure. In particular, the bezel mask layer 23 may be formed to have a stepped structure with a narrow width in the direction toward the lower adhesive 43. Here, the bezel mask layer 23 having the stepped structure is formed by performing the silk screen printing or the digital printing on the bezel mask layer 23, and the bezel mask layer 23 having the desired thickness is formed The impermeable pigment of the bezel mask layer 23 can flow down from the surface portion 21 to the outer periphery. Thus, the bezel mask layer 23 having the desired thickness without the impermeable pigment flowing can be formed only by performing at least two times of silk screen printing or digital printing. As mentioned, at least two silk screen printing or digital printing The bezel mask layer 23 is formed to have a step structure due to the nature of the silk screen printing or digital printing process. Therefore, when the bezel mask layer 23 is formed by performing at least two silkscreen printing or digital printing as in the present invention, the bezel mask layer 23 is formed to have a narrow width in the direction toward the lower adhesive 43 Terminal structure.

The optical adhesive layer 25 may be formed by performing silk screen printing or digital printing so that the optical adhesive layer 25 has a step structure and a space G ), As shown in Fig. That is, the end of the optical adhesive layer 25 and the end of the step structure of the bezel mask layer 23 are formed to be spaced apart from each other.

The structure in which the end portions of the optical adhesive layer 25 and the bezel mask layer 23 are spaced apart from each other so as to have a space G between the end portions of the step structure of the bezel mask layer 23, To prevent the gel-type material of the optical adhesive layer 25 from flowing out from the cover sheet 200 to the outside. This is because the space G between the optical adhesive layer 25 and the bezel mask layer 23 mentioned above functions as a drain when the gel-type material of the optical adhesive layer 25 flows, Type material of the optical adhesive layer 25 can be prevented from flowing down from the cover sheet 200 when the cover sheet 200 is attached to the display surface 12 by acting as a dam.

The surface adhesive layer 27 in the present invention is formed on the same surface of the back surface of the surface portion 21 as the optical adhesive layer 25 and the bezel mask layer 23 have different heights, By adhering to the display surface 12, the gel-type material can be deformed into a structure having almost the same height by flowing into the space mentioned above.

The cover sheet 200 for a display according to the present invention is provided with the optical adhesive layer 25 in the viewer region 13 of the same layer together with the bezel mask layer 23 so that the viewer region 13 in which the bezel mask layer 23 is disposed ), Thereby preventing the rainbow spreading phenomenon.

In particular, the optical adhesive layer 25 in the present invention can be formed by performing a simple process such as silk screen printing or digital printing, as described above, as well as preventing the phenomenon of rainbow spread. That is, the optical adhesive layer 25 can be formed by carrying out a simple process instead of forming and removing a separate mask layer as in the application of the ultraviolet resin.

In addition, an improvement in touch feeling can be expected by forming the optical adhesive layer 25 on the entire viewer region 13. The optical adhesive layer 25 is formed to be disposed on the rear surface of the surface portion 21 together with the bezel mask layer 23 to improve the strength of the cover sheet 200 itself by improving the adhesion of the surface portion 21 . Since various colors, various patterns, and the like can be realized in the bezel mask layer 23, the aesthetic value can be improved.

The optical double-side adhesive layer 29 may be disposed on the back surface of the surface adhesive layer 27 in the lower adhesive 43. The above-mentioned optical double-sided adhesive layer 29 can prevent scattering of the surface portion 21 and can adhere the surface adhesive layer 27 and the anti-scattering film 31 described later. In the case of the optical double-sided adhesive layer 29, since it is disposed on the display surface 12 including the viewer area 13, it is required to have a transparent material like the surface portion 21.

Shielding film 31 is provided not only as a medium for attaching both the optical double-sided adhesive layer 29 and the adhesive layer 33 described later but also as an adhesive for the optical double-sided adhesive layer 43, So as to prevent scattering of the part 21. In addition, in the case of the anti-scattering film 31, since it is disposed on the display surface 12 including the viewer region 13, it should have a transparent material like the surface portion 21.

In addition, the adhesive layer 33 may be provided at the lowermost portion among the above-mentioned lower adhesives. The adhesive layer 33 mentioned above must have a sufficient adhesive force since it attaches the cover sheet 200 for a display itself to the display surface 12 of the electronic apparatus 100. [ The adhesive layer 33 mentioned above may include a silicone resin. In addition, since the adhesive layer 33 is disposed on the display surface 12 including the viewer area 13, the adhesive layer 33 must have a transparent material like the surface part 21. [

That is, the cover sheet 200 of the present invention may include a bottom adhesive 43 composed of the optical double-side adhesive layer 29, the scattering prevention film 31, and the adhesive layer 33 as mentioned above. Particularly, since the cover sheet 200 of the present invention has a structure in which the optical adhesive layer 25 of the surface adhesive layer 27, which is one of the above-mentioned upper adhesive 41, protrudes, the lower adhesive 43 also functions as an optical adhesive layer 25 may protrude from the surface of the substrate. In other words, even in the case of the lower adhesive 43, the portion disposed in the viewer region 13 is configured to protrude from the portion disposed in the bezel region 15.

The cover sheet 200 of the present invention may have a structure in which a portion corresponding to the viewer area 13 of the display surface 12 protrudes from a portion corresponding to the bezel area 15 of the display surface 12 .

FIGS. 5 and 6 are views for explaining a state in which the display cover sheet of FIG. 2 is attached to the display surface of the electronic device of FIG. 1, and FIG. 7 is a cross- 4B. Fig.

5 to 7, the cover sheet 200 of the present invention has a structure in which a portion corresponding to the viewer area 13 of the display surface 12 is located on the bezel area 15 of the display surface 12 The attachment in the viewer area 13 is performed first and the bezel area 15 is formed in such a manner that when the cover sheet 200 is attached to the display surface 12 of the electronic device 100, Lt; / RTI > can be made later.

The cover sheet 200 of the present invention has a structure in which a portion of the display surface 12 corresponding to the viewer region 13 protrudes from a portion of the display surface 12 corresponding to the bezel region 15 It is understood that the user first attaches the cover sheet 200 to the display surface 12 and starts to press the central area of the cover sheet 200 The cover sheet 200 of the present invention is such that attachment in the viewer area 13 is made first and attachment in the bezel area 15 can be done later.

As described above, the attachment of the cover sheet 200 may take a form in which the attachment of the cover sheet 200 is performed first in the viewer area 13, which is the central area of the display surface 12, and diffuses into the bezel area 15, The air present between the display surface 12 and the cover sheet 200 in the direction of the arrow shown in Fig. 5 can be easily discharged from the display surface 12 to the outside.

Therefore, when the cover sheet 200 of the present invention is attached to the display surface 12 of the electronic device 100, air can be sufficiently prevented from remaining between the display surface 12 and the cover sheet 200 .

As described above, the cover sheet 200 for a display according to the present invention includes the air discharge portion 18 having a chamfered structure at the outermost portion of the lower adhesive 43, 12, the air present between the display surface 12 and the cover sheet 200 can be more easily discharged, and as a result, air remains between the display surface 12 and the cover sheet 200 Can be prevented more sufficiently.

As described above, when the cover sheet 200 of the present invention is attached to the display surface 12 of the electronic device 100, the space G between the optical adhesive layer 25 and the bezel mask layer 23 is optically By moving the gel-type material of the adhesive layer 25, the optical adhesive layer 25 and the bezel mask layer 23 can be deformed into a structure having almost the same height.

8 is a schematic structural view showing a cover sheet for a display according to another embodiment of the present invention.

8, the cover sheet 300 for a display of FIG. 8 is configured such that the optical adhesive layer 25 is disposed on the rear surface of the surface portion 21 so as to extend to the bezel region 15 where the bezel mask layer 23 is formed And a structure similar to that of the cover sheet 200 for display of FIG. 2 except that the air outlet portion 51 to be described later is formed to have a structure extending to the viewer region 13 through the bezel region 15 The same reference numerals are used for the same members, and a detailed description thereof will be omitted.

In the case of the cover sheet 300 for a display shown in Fig. 8, the cover sheet 300 corresponding to and attached to the viewer area 13 of the display surface 12 of the electric device, like the cover sheet 200 for a display in Fig. And the cover sheet 15a corresponding to and attached to the bezel area 15 may be provided so as to have an integral structure. The cover sheet 15a corresponding to and attached to the bezel area 15 of the cover sheet 300 mentioned above is provided with a through hole structure 15a for exposing each button of the electronic device 100, (17a, 19a), respectively.

The cover sheet 300 for a display in FIG. 8 further includes a surface portion 21, a surface adhesive layer 27, an optical double-sided adhesive layer 29 The upper adhesive 41 composed of the surface portion 21 and the surface adhesive layer 27 and the adhesive 40 for the optical double-side adhesive layer 29 ), An anti-scattering film (31) and an adhesive layer (33). In addition, the cover sheet 300 of the present invention may further include a protective film 35.

Particularly, in the case of the cover sheet 300 for a display in FIG. 8, unlike the cover sheet 200 for a display in FIG. 2, an optical adhesive layer 25 is formed to a bezel region 15 where a bezel mask layer 23 is formed And may be formed on the rear surface of the surface portion 21 to extend.

The optical adhesive layer 25 is formed on the rear surface of the surface portion 21 so as to extend to the bezel region 15 where the bezel mask layer 23 is formed, 13 may be provided so as to have a concave structure than a portion disposed in the bezel region 15. That is, the optical adhesive layer 25 is formed so as to extend not only to the viewer area 13 but also to the bezel area 15 where the bezel mask layer 23 is formed, so that the optical adhesive layer 25 has a stepped structure, The lower adhesive 43 may be provided so as to have a concave structure that is disposed in the viewer area 13 rather than a portion disposed in the bezel area 15.

Unlike the cover sheet 200 for a display of FIG. 2, the cover sheet 300 for a display is formed such that the optical adhesive layer 25 extends to the bezel region 15 like the cover sheet 300 for a display of FIG. In order to obtain a productivity gain due to the manufacture of the battery. This is because the optical adhesive layer 25 is formed only in the viewer area 13 as in the cover sheet 200 for a display of FIG. 2, ) To the bezel area (15).

Figs. 9 and 10 are views for explaining a state in which the cover sheet for display of Fig. 8 is attached to the display surface of the electronic apparatus of Fig. 1. Fig.

Referring to FIG. 9, the cover sheet 300 for a display of FIG. 8 is formed to have a concave structure that is disposed in the viewer area 13 and is more concave than a part of the cover sheet 300 disposed in the bezel area 15, Since the cover sheet 300 of the present invention can be started by pressing the central area of the cover sheet 300 when the user attaches the cover sheet 300 of Fig. 8 to the display surface 12 as shown in Fig. 5, The attachment in the viewer area 13 can be made first, and the attachment in the bezel area 15 can be made later.

9, the portion disposed in the viewer region 13 is formed to have a concave structure than the portion disposed in the bezel region 15. However, since the user presses the central region as shown by the arrows Since the attachment of the cover sheet 300 is performed, the attachment in the viewer area 13, which is the central area of the display surface 12 at the time of attachment of the cover sheet 300, (15).

10, although the portion where the cover sheet 300 is disposed in the viewer region 13 has a concave structure than the portion where the cover sheet 300 is disposed in the bezel region 15, The attachment is diffused from the viewer area 13 to the bezel area 15 as shown in the direction of the arrow shown, and particularly when the attachment is diffused into the bezel area 15, And the air present between the display surface 12 and the cover sheet 300 can be easily discharged from the display surface 12 to the outside.

Therefore, even when the cover sheet 300 of FIG. 8 is attached to the display surface 12 of the electronic device 100, it is possible to sufficiently prevent air from remaining between the display surface 12 and the cover sheet 200 .

FIG. 11 is a view for explaining an air discharge unit provided in the cover sheet for a display of FIG. 8; FIG.

Referring to FIG. 10, the display cover sheet 300 of FIG. 8 may include an air discharge portion 51 having a chamfer structure at the outermost portion of the lower adhesive 43 as mentioned above.

In particular, in the case of the air discharging unit 51, the air discharging unit 51 may be extended to the viewer area 13 through the bezel area 15, unlike the air discharging unit 18 in FIG. This is because the cover sheet 300 for a display of FIG. 8 has a concave structure as mentioned above, so that the air discharge portion 51 of FIG. 8 is moved to the bezel region 15 like the air discharge portion 18 of FIG. The air that may be present in the viewer area 13 can not escape to the outside when the display cover sheet 300 of FIG. 8 is attached.

8, when the cover sheet 300 for a display is formed to have a concave structure, the air discharge portion 51 may be formed to have a structure extending to the viewer region 15 as well.

The cover sheet for a display according to the present invention has a structure in which a portion disposed in a viewer region is protruded or recessed from a portion disposed in a bezel region and in particular, The attachment in the viewer area can be made first and the attachment in the bezel area can be done later.

Accordingly, the cover sheet for a display of the present invention is capable of easily discharging the air present between the display surface and the cover sheet for display from the display surface to the outside, and also by providing the air discharge portion, The existing air can be discharged more easily.

That is, the cover sheet for a display according to the present invention is not attached to the entire area of the display surface at the time of attaching the display surface but spreads to the remaining area after the partial attachment is first made in the viewer area. Can be easily discharged from the display surface to the outside.

Therefore, the cover sheet for a display of the present invention can minimize the air remaining between the display surface of the electronic apparatus and the cover sheet, and as a result, by attaching the cover sheet for display of the present invention more easily to the display surface of the electronic apparatus It is possible to improve the convenience of the product according to use and to improve the quality competitiveness of the cover sheet itself.

In particular, the cover sheet for display having the protruding structure of the present invention can more easily achieve the discharge of air, and the cover sheet for display having the concave structure of the present invention can improve the productivity.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the following claims. It can be understood that it is possible.

11: Border face 12: Display face
13: Viewer area 15: Bezel area
17: camera 18, 51: air outlet
19: speaker 21: surface portion
23: Bezel mask layer 25: Optical adhesive layer
27: surface adhesive layer 29: double-sided adhesive layer for optical
31: Shatterproof film 33: Adhesive layer
100: electronic device 200: cover sheet

Claims (11)

A bezel mask layer disposed on a rear surface of the surface portion so as to correspond to a bezel region surrounding a viewer region in which an image is output, of an entire surface of the display surface of the electronic device, and an optical adhesive layer disposed on a rear surface of the surface portion; A top adhesive having a surface adhesive layer of a top surface; And
And an adhesive layer disposed on a rear surface of the anti-scattering film so as to be adhered to a display surface of the electronic device, wherein the anti-scattering layer is disposed on the rear surface of the anti- Wherein the optical adhesive layer is formed so as to correspond to the viewer area or extend to the bezel area so that a portion disposed in the viewer area and a part disposed in the bezel area have different heights Cover sheet for display. The cover sheet for a display according to claim 1, wherein the surface portion comprises tempered glass, reinforced plastic or reinforced film. The cover sheet for a display according to claim 1, wherein the optical adhesive layer has a transmittance of 90% or more, a reflectivity of 1.0% or less, and a dielectric constant. The cover sheet for a display according to claim 1, wherein the optical adhesive layer comprises any one selected from the group consisting of polycarbonate, polyimide, and acrylic resin. The cover sheet for a display according to claim 1, wherein the bezel mask layer comprises a non-transparent pigment so that various colors can be realized. The cover sheet for a display according to claim 1, wherein the cover sheet further comprises an opening portion having a through-hole structure in a portion corresponding to a bezel region of the electronic device. The optical module according to claim 1, wherein the optical adhesive layer is formed on a rear surface of the surface portion to correspond to the viewer region, and has a first height, the bezel mask layer is disposed on a rear surface of the surface portion to correspond to the bezel region, Wherein the lower adhesive is formed to have a second height lower than the first height so that a portion of the lower adhesive that is disposed in the viewer area protrudes from a portion of the lower adhesive located in the bezel area. The optical connector according to claim 7, wherein the bezel mask layer is formed to have a stepped structure having a narrow width in a direction toward the lower adhesive, and the optical adhesive layer is formed in a structure spaced apart from the step structure A cover sheet for a display. 8. The electronic device according to claim 7, wherein at least one air discharge portion having a chamfered structure is provided at an outermost portion of the lower adhesive so that air can be discharged from the display surface to the outside when the cover sheet is attached to the display surface of the electronic device And a cover sheet for a display. The optical connector according to claim 1, wherein the optical adhesive layer is disposed on a rear surface of the surface portion so as to extend to the bezel region where the bezel mask layer is formed, Wherein the cover sheet is provided so as to have a concave structure more than a portion to be disposed. 11. The electronic device according to claim 10, further comprising at least one air discharge portion having a chamfered structure at an outermost portion of the lower adhesive so that air can be discharged from the display surface to the outside when the cover sheet is attached to the display surface of the electronic device Wherein the air discharge portion has a structure extending from the bezel region to the viewer region.
KR20130064623A 2013-06-05 2013-06-05 A cover sheet for display KR20140142904A (en)

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