KR20170000649A

KR20170000649A - Removal sheet for protecting liquid crystal and manufacturing method thereof

Info

Publication number: KR20170000649A
Application number: KR1020150089844A
Authority: KR
Inventors: 최미영; 김재우
Original assignee: 최미영; 김재우
Priority date: 2015-06-24
Filing date: 2015-06-24
Publication date: 2017-01-03
Also published as: KR101783091B1

Abstract

The present invention relates to a detachable sheet for liquid crystal protection and a method for manufacturing the same for improving an adhesive force with respect to a bezel region by causing a high-transparency optical material (OCA) or a high-transparency optical resin (OCR) to directly adhere to tempered glass. In addition, the present invention relates to a detachable sheet for liquid crystal protection and a method for manufacturing the same, wherein, in the case of printing layer formation in a bezel region, the method additionally prevents the occurrence of a step by forming a lattice-shaped printing pattern; maintains an appropriate level of color transparency in the entire surface of tempered glass; allows the lattice-shaped printing pattern and the printing layer in the bezel region to be implemented in a single operation even without the use of an expensive transparent printing dye and printing equipment; and allows the printing layer in the bezel region and the lattice-shaped printing pattern in a central region to be printed in the same color.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detachable sheet for protecting liquid crystal,

The present invention is related to Prior Art No. 10-2014-0090878.

The present invention relates to a detachable sheet for protecting liquid crystal and a method of manufacturing the same.

Recently, as smartphones become popular, accessories for smart phones are increasing.

Among these accessories, a liquid crystal protection detachable sheet for protecting the liquid crystal of a smartphone is also sold.

In this case, the liquid crystal protection detachable sheet for protecting the liquid crystal of the conventional smartphone is mainly made of a film material and attached to the liquid crystal of the smart phone, thereby protecting the liquid crystal.

However, such a liquid crystal protective sheet made of a film material is made of a soft material, and air bubbles are generated between the liquid crystal surface and the film, resulting in a cosmetic problem. In addition, since the liquid crystal protective sheet made of a film is usually made of a resin material, it is easily damaged by scratches or the like.

In order to solve such a problem, Korean Unexamined Patent Application Publication No. 10-2014-0065155 discloses a sheet for protecting a touch screen panel and a method for manufacturing the same. In the sheet for protecting a touch screen panel, Forming a printing layer having different transparency through an ink-jet printing process on each of the bezel areas; Forming an adhesive layer on the lower end of the print layer through a silk screen process or a molding process; Forming an adhesive layer on the lower end of the adhesive layer through a silk screen process or a molding process; And a step of attaching a protection film and a release film to the upper end of the reinforcing glass layer and the lower end of the pressure sensitive adhesive layer, It is possible to prevent the generation of bubbles by removing the stepped portion by the printing layer by continuously forming the printing layer and the transparent printing layer printed with the color in the bezel region and the screen display region respectively, As a result, the production yield can be improved.

Such conventional prior arts solve the above-described problems by providing an advantage that scratches or the like are not generated by attaching a film having an adhesive layer formed thereon to the tempered glass rather than the film type described above.

Conventionally, the prior art technology not only provides a tempered glass to prevent scratches, but also forms a print layer in a bezel area in the lower surface of the tempered glass, So that it is easily adhered to the liquid crystal of the smartphone.

In this case, since the printing layer in the bezel region is protruded and formed with a certain thickness, a step is formed in the central region where no print layer is formed, and air bubbles are generated between the sheet and the liquid crystal do.

To this end, the prior art prevents a step from being formed by forming a transparent printed layer (reference numeral 510 in FIG. 5 in the prior art) in the central region of the tempered glass where no printing layer is formed.

In this case, the conventional prior art thus has a transparent printing layer (reference numeral 510 in FIG. 5 and a printing layer (reference numeral 505 in FIG. 5 in the prior art) in the prior art) in the central region of the tempered glass through an ink- .

However, since the transparent print layer formed in the central region of the tempered glass is applied to the entire central region of the tempered glass in a state where the transparency thereof is not perfect, the transmittance of the color is substantially reduced and the actual brightness of the liquid crystal is reduced .

Further, since the transparent printing layer formed in the central region of the tempered glass is applied to the entire central region by the ink-jet printing method, the prior art has a problem that it is not dried well after the application of the ink, Resulting in a problem of lowering productivity.

In the prior art, the transparent printing layer and the printing layer are printed at one time by the inkjet method, but the transparent printing layer uses the transparent ink material and the printing layer uses the color ink as the raw material , And the operation of the transparent print layer and the print layer is not performed at a time.

The inventors of the applicant have proposed this invention in order to solve these various problems.

Although the above-mentioned prior art has excellent effects such as solving the above-mentioned various problems, it is necessary to develop a technique that can more reliably solve the problem of level difference between the bezel area and the transparent printing layer, The need for the development of

Korean Patent Publication No. 10-2014-0065155 (published on Apr. 05, 29, 201)

SUMMARY OF THE INVENTION The present invention has been conceived to solve the problems described above, and it is an object of the present invention to improve adhesion to a bezel region by bonding a highly transparent optical material (OCA) or a highly transparent optical resin And a method of manufacturing the same.

Another object of the present invention is to provide a liquid crystal protection detachable sheet for protecting a liquid crystal, which is capable of forming a lattice print pattern in a bezel area to further prevent occurrence of a step, And a manufacturing method thereof.

It is still another object of the present invention to provide a detachable sheet for protecting liquid crystal and a method of manufacturing the same, in which the printed layer of the grid-like printed pattern and the bezel area are carried out in one operation without using expensive transparent dye for printing and printing equipment I have to.

It is still another object of the present invention to provide a detachable sheet for protecting liquid crystal that prints a grid print pattern of a print area and a central area of a bezel area in the same color, and a method of manufacturing the same.

In order to achieve the above object, the present invention provides a detachable sheet for protecting liquid crystal, comprising: tempered glass; An OCA layer adhered to the lower surface of the tempered glass; An adhesive layer formed on the lower surface of the OCA layer; A printing layer printed on the bezel region in the lower side of the tempered glass; A grid printing pattern printed in a lattice form in a central area of the lower surface of the tempered glass; A deposition layer deposited on the printing layer; A film layer made of a light transmitting material; An adhesive layer bonded to the film layer and adhered to the liquid crystal surface of the smartphone; And a rigid film layer bonded to the pressure-sensitive adhesive layer, wherein the lattice-like print pattern is formed on the same layer as the print layer so that no step is generated, and the film layer is formed such that the lattice- Shaped printing pattern so as not to be reflected by the upper surface of the reinforcing glass, and is visually blocked when the lattice-like printing pattern is viewed downward in the upper space of the tempered glass.

The print layer and the grid print pattern are printed with the same color and are interconnected.

In order to accomplish the above object, the present invention provides a method for manufacturing a detachable sheet for protecting liquid crystal, comprising the steps of: preparing a plate netting by coating an emulsion on a plate netting to prepare a plate netting; A pattern film preparation step of fabricating a pattern film in which a bezel printing area corresponding to a bezel area of a smart phone and a pattern printing area in which grid-like fine patterns are formed are formed; A plate screen exposure step of exposing the plate making screen area except for the bezel print area and the pattern print area by irradiating light in a state in which the pattern film is in close contact with the plate making net; Developing a plate network to form a bezel ink permeation area and a pattern ink permeation area so that ink is transmitted to an area where the bezel printing area and the pattern printing area are located; The ink is permeated into the ink permeable region of the bezel in a state in which the plate making net is in close contact with the tempered glass to form a printed layer in the bezel region of the tempered glass and ink is permeated into the pattern ink permeable region, A printing step of forming a printing pattern; A masking step of attaching a masking tape to a central region of the tempered glass so as to cover the latticed print pattern; A deposition layer forming step of depositing a printing layer of the tempered glass to form a vapor deposition layer; An ultrasonic cleaning step of ultrasonic cleaning the tempered glass with the masking tape attached thereto with the masking tape removed; And a film layer adhered to cover the vapor-deposited print layer and the vapor-deposited layer, a pressure-sensitive adhesive layer bonded to the film layer and adhered to the liquid crystal surface of the smartphone, and a rigid film layer bonded to the pressure-sensitive adhesive layer And adhering the film layer of the rimmed tape to the print layer and the lattice-shaped print pattern.

In the printing step, the ink absorptive portion absorbing the ink is scratched on the plate making net to form the printing layer and the grid printing pattern at the same time.

The printing layer and the grid printing pattern are formed of the same color of ink and the film layer is brought into close contact with the grid printing pattern printed with the ink so that the grid printing pattern is not reflected to the upper space of the glass reinforcement, So that the pattern is visually intercepted when viewed downward from the upper space of the tempered glass.

According to another aspect of the present invention, there is provided a detachable sheet for protecting liquid crystal, comprising: a tempered glass; An OCR layer adhered to the lower surface of the tempered glass; An adhesive layer adhered to a lower surface of the OCR layer; A printing layer printed on the bezel region in the lower side of the tempered glass; A grid printing pattern printed in a lattice form in a central area of the lower surface of the tempered glass; A deposition layer deposited on the printing layer; A film layer made of a light transmitting material; An adhesive layer bonded to the film layer and adhered to the liquid crystal surface of the smartphone; And a rigid film layer bonded to the pressure-sensitive adhesive layer, wherein the lattice-like print pattern is formed on the same layer as the print layer so that no step is generated by the print layer, and the film layer is a grid- So that the grid-like printed pattern is not reflected to the upper space of the tempered glass, so that the grid-shaped printed pattern is visually intercepted when viewed downward in the upper space of the tempered glass.

According to the present invention, there is provided a detachable adhesive sheet for liquid crystal protection and a method of manufacturing the same, wherein a highly transparent optical material (OCA) or a highly transparent optical resin (OCR) is formed under the tempered glass to improve the adhesive force to the bezel area, There is an advantage that it is solved.

According to the present invention, there is provided a detachable sheet for liquid crystal protection and a method of manufacturing the same, wherein a grid-shaped print pattern is formed in a central region of the tempered glass to prevent a step between the bezel region and the printed layer, It is possible to maintain a good color transmittance.

Further, according to the present invention, it is possible to reduce the drying time by using only the printing layer of the grid printing pattern and the bezel area without using expensive printing transparent dyes and printing equipment In addition, the productivity can be increased by shortening the process, and the manufacturing cost can be greatly reduced.

Further, according to the liquid crystal protection detachable sheet for protecting and the method of manufacturing the same according to the present invention, the printing process is shortened while maintaining the transparency by printing the grid printing patterns of the bezel area and the central area in the same color.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a detachable sheet for protecting liquid crystal according to an embodiment of the present invention; FIG.
Fig. 2 is a bottom view of the tempered glass shown in Fig. 1 in a state in which a print layer and a lattice-shaped print pattern are formed on a bottom surface thereof.
3 is a flowchart of a method of manufacturing a detachable sheet for protecting liquid crystal according to an embodiment of the present invention.
Figs. 4 to 10 are process configuration diagrams of the respective steps of the method for manufacturing the detachable sheet for protecting liquid crystal shown in Fig. 3; Fig.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

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 should be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be interpreted in an ideal or overly formal sense unless explicitly defined in the present application Do not.

It should be understood that the present invention covers all modifications, equivalents, and alternatives falling within the spirit and scope of the present invention as defined by the appended claims.

1 and 2, a detachable sheet for protecting liquid crystal according to an exemplary embodiment of the present invention includes a tempered glass 10, an OCA layer 11, an adhesive layer 12, a print layer 20, A printing pattern 30, a deposition layer 40, a film layer 52, an adhesive layer 53, and a rimbe film layer 54.

The thicknesses of the respective structures shown in Fig. 1 may be different, and no difference in thickness is given in the drawings.

The tempered glass 10 is a layer for protecting the liquid crystal surface of the smartphone, and is a part where the user's hand of the smartphone comes into contact. That is, when the user's hand is touched, the tempered glass 10 comes into contact with the touch screen formed on the liquid crystal of the smartphone.

An OCA layer (optically transparent adhesive film layer) 11 is formed of an adhesive material and adhered to cover the print layer 20 and the grid print pattern 30. [ The OCA layer 11 is an adhesive film of glass and liquid crystal produced by polymer optical technology.

Since the OCA layer 11 is made of a transparent material, there is no problem such as hiding the color or the like formed on the print layer 20 even when the print layer 20 and the grid-shaped print pattern 30 are covered.

In addition, the OCA layer 11 is directly bonded to the tempered glass to improve the adhesion to the bezel region.

The printing layer 20 is printed on the lower surface bezel region of the tempered glass 10 and the OCA layer 11, for example, as a layer on which ink is printed by a silk screen printing technique. In this case, the color of the print layer 20 is added to perform a function of adding color to the bezel area of the smart phone, thereby making the area outside the liquid crystal of the smart phone look good.

In the bezel area, the thinner the screen is, the more the screen is full. For example, when the movie or the drama is watched, the immersion is good. When the bezel area is thick, the gaze is dispersed, but when it is thin, the gaze is fixed and the immersion is increased. Therefore, in the present invention, the bezel area is formed thin and narrow, and is printed in black and white.

The grid-like print pattern 30 is a pattern in which ink is printed by, for example, a silk screen printing technique. The grid-like print pattern 30 is formed in a substantially central area corresponding to a viewing area in a liquid crystal of a smartphone, Is printed. The grid print pattern 30 can be variously modified according to various patterns of the silk screen, as well as the linear shape shown in the drawings. The lattice-typed print pattern 30 is formed in the same layer as the print layer 20, thereby preventing a step from being generated. That is, the bezel area can be minimized.

The print layer 20 and the grid print pattern 30 are printed and integrated on a process by, for example, silk screen printing techniques of the same color.

The deposition layer 40 is a layer deposited on the print layer 20, for example, by E-beam evaporation, and the material is made of at least one of SiO 2 and TiO 2, And improves the reflectivity, thereby improving the discrimination power of the print layer 20, and at the same time, the bezel area is formed as a flat surface.

The film layer 52 is a layer made of a resin film of a light transmitting material such as a high-transparency PET film, for example, and is configured to cover the lattice-like printed pattern 30 and the vapor deposition layer 40. The film layer 52 provides a space to which the adhesive layer 53 is to be bonded and is brought into close contact with the lattice-like printed pattern 30 on which the deposition layer 40 is not formed so as to significantly reduce the reflectance of the lattice- do.

Therefore, the user can not see the grid print pattern 30 through the tempered glass 10.

The adhesive layer 53 is bonded to the film layer 52. The adhesive layer 53 allows the liquid crystal protection detachable sheet to be detachably attached to the liquid crystal surface of the smartphone at the user's discretion.

The rimmed film layer 54 is bonded to the adhesive layer 53. The rimmed film layer 54 is used to remove the liquid crystal protection detachable sheet from the liquid crystal when the user removes it from the liquid crystal while protecting the adhesive layer 53.

The detachable sheet for protecting liquid crystal according to an embodiment of the present invention having the above-described structure provides an advantage that scratches are not generated by using the tempered glass 10

In this case, when the printing layer 20 is formed in the bezel region of the tempered glass 10, the detachable sheet for protecting a liquid crystal according to an embodiment of the present invention prevents the stepped portion from occurring in the central region of the tempered glass 10 The OCA layer 11 is formed on the lower surface of the tempered glass 10 and the lattice print pattern 30 is formed in the central area thereof to improve the adhesive force, The color transmittance of the central region of the glass 10 can be maintained.

In the case of the liquid crystal protection detachable sheet according to the embodiment of the present invention, the grid printing pattern 30 in the central region of the tempered glass 10 and the printing layer 20 in the bezel region are performed in only one printing operation , It is not necessary to use expensive transparent dyestuffs for printing and printing equipment, and productivity can be increased, and manufacturing cost can be greatly reduced.

In addition, the liquid crystal protection detachable sheet according to the embodiment of the present invention can print the printing layer 20 in the bezel region and the grid-like printed pattern 30 in the center region in the same color to shorten the printing process, 52 can prevent the grid-like printed pattern 30 from being visible in the upper space of the tempered glass 10, thereby maintaining the original transparency.

Meanwhile, in the above embodiment, the OCA layer 11 may be replaced with an OCR (Optically Clear Resin) layer.

OCR layer, there is an advantage in that manufacturing cost is reduced compared to the OCA layer.

Hereinafter, a method of manufacturing a detachable sheet for protecting liquid crystal according to an embodiment of the present invention will be described.

3, the detachable sheet for protecting liquid crystal according to an exemplary embodiment of the present invention includes a plate making net preparation step S10, a pattern film preparing step S20, a plate making net exposure step S30, A printing step S50, a masking step S60, a deposition layer forming step S70, an ultrasonic cleaning step S80, and a rim tape attaching step S90.

The plate making net preparing step S10 is a step of preparing the plate making net 1 by applying the oil on the plate making net 1 as shown in FIG.

The plate making net 1 is formed of a stainless steel material so as to minimize the bleeding of the ink and to prevent the pattern from being broken when the printing layer 20 and the grid printing pattern 30 are formed. . The lattice spacing may be 20 to 40 micrometers for high resolution pattern implementation.

5, the pattern film preparation step S20 includes a bezel printing area 2b corresponding to a bezel area of the smartphone and a pattern printing area 2a corresponding to the pattern printing area 2a corresponding to the lattice- (2).

The pattern film 2 is formed on one surface of a film having a high light transmittance (for example, a transparent resin film), a bezel printing region 2b corresponding to the printing layer 20 and the grid printing pattern 30, (2a). The bezel printing area 2b and the pattern printing area 2a are made of ink having little light transmittance at the time of the subsequent exposure work.

6, in the plate-making screen exposure step S30, the bezel printing area 2b and the pattern film 2 printed with the pattern printing area 2a are placed in close contact with the plate making net 1, And exposing the region of the plate making net 1 except for the region of the plate making net 1 where the bezel print region 2b and the pattern print region 2a are located.

A fresnel lens portion (4) having a convex lens shape formed by a plurality of corrugated portions spaced apart from each other in a region through which the light source (3) passes may be used as the light source (3) ) Are arranged so as to reduce scattering of light generated in the light source 3, thereby minimizing refraction and reflection of light, thereby improving straightness. This prevents the occurrence of the saw tooth phenomenon in the printing operation. When the exposure operation is continued for a predetermined period of time, the plate making net 1 is cured in the areas other than the areas where the bezel printing area 2b and the pattern printing area 2a are located.

The production line network development step S40 is a step of separating the pattern film 2 adhered to the screen board net 1 from the screen grid and then applying the developer to the screen grid net 1 to develop the screen board net 1. [

The unexposed areas are removed by the development of the screen printing net 1 and the bezel ink permeation area and the pattern ink permeation area are formed so that ink is permeated only in the areas where the bezel printing area 2b and the pattern printing area 2a are located Regions.

7, the printing step S50 is a step of forming a printing layer 20 and a grid printing pattern 30 by performing one-component printing on the tempered glass 10 to protect the liquid crystal of the smartphone, to be.

That is, in the state in which the plate making net 1 on which the bezel ink permeable area and the pattern ink permeable area are formed is closely attached to the tempered glass 10, the ink 6 is transmitted through the bezel ink permeable area and the pattern ink permeable area To form the printing layer 20 in the bezel region of the tempered glass 10 and to form the latticed print pattern 30 in the central region of the tempered glass 10. [

In the printing step S50, the ink absorbing portion absorbing the ink 6 is scrubbed onto the screen board 1 to form the printing layer 20 and the grid-like printed pattern 30 at the same time.

The ink 6 forming the printing layer 20 and the grid-like printed pattern 30 is formed of ink of the same color by, for example, a silk screen printing technique.

The printing layer 20 and the latticed print pattern 30 are formed on the lower surface of the tempered glass 10 and the OCA layer 11 as shown in Fig.

The masking step S60 is a step of attaching the masking tape 60 to the central region of the tempered glass 10 so as to cover the latticed print pattern 30, as shown in Fig.

The deposition layer forming step S70 is a step of forming the deposition layer 40 by depositing the printing layer 20 of the tempered glass 10 as shown in FIG.

The deposition layer 40 is formed of, for example, SiO 2 or TiO 2 by electron beam evaporation to protect the print layer 20 and improve the reflectivity to improve the discrimination of the print layer 20 So that the bezel area is formed as a flat surface.

In the ultrasonic cleaning step S80, the adhesive residue formed on the surface to which the masking tape 60 is attached is washed and removed by ultrasonic waves after the masking tape 60 is removed.

The rimmed tape attaching step S90 is a step of attaching the rimmed tape 50 with the masking tape 60 removed.

The reamer tape 50 includes a film layer 52 bonded to the vapor deposition layer 40 and a pressure sensitive adhesive layer 53 and an adhesive layer 53 bonded to the film layer 52 and adhered to the liquid crystal surface of the smartphone, And a rigid film layer 54 bonded to the rigid film layer.

The film layer 52 is brought into close contact with the grid-shaped print pattern 30 printed with ink so that the grid-shaped print pattern 30 is not transmitted to the outside of the smartphone, do.

As described above, in the method of manufacturing a detachable sheet for protecting liquid crystal according to an embodiment of the present invention, the OCA layer 11 is directly bonded to the tempered glass to improve the adhesive force to the bezel region, Even if the printed layer 20 and the latticed print pattern 30 are covered with each other, there is no problem such as hiding the color or the like formed on the print layer 20.

In the method of manufacturing a detachable sheet for protecting liquid crystal according to an embodiment of the present invention, when the printing layer 20 is formed in the bezel region of the tempered glass 10, It is possible to prevent the occurrence of steps and the color transmittance of the entire surface of the tempered glass 10 to be lowered.

In the method of manufacturing a detachable sheet for protecting liquid crystal according to an embodiment of the present invention, since the grid-like printed pattern 30 in the central region and the printed layer 20 in the bezel region are printed only by one printing operation, The use of transparent printing dyestuffs and expensive printing equipment are not used, which leads to a significant reduction in manufacturing cost while increasing productivity.

In the method of manufacturing a detachable sheet for protecting liquid crystal according to an embodiment of the present invention, the printing layer 20 in the bezel region and the grid-like printed pattern 30 in the central region are printed in the same color to shorten the printing process , The film layer 52 prevents the grid-like printed pattern 30 from being visible in the upper space of the tempered glass 10, so that transparency can be maintained.

One ; Plate making net 2; Pattern film
3; Light source 4; The fresnel lens portion
10; Tempered glass 11; OCA layer
20; A printing layer 30; Grid printing pattern
40; A deposition layer 50; Ribbon tape
52; Film layer 53; Adhesive layer
54; Ribbed film layer

Claims

tempered glass;
An OCA layer bonded to a lower surface of the tempered glass;
An adhesive layer formed on the lower surface of the OCA layer;
A printing layer printed on a bezel region in a lower surface of the tempered glass;
A grid printing pattern printed in a lattice form in a central area of a lower surface of the tempered glass;
A deposition layer deposited on the printing layer;
A film layer made of a light transmitting material;
An adhesive layer bonded to the film layer and adhered to the liquid crystal surface of the smartphone; And
And a rigid film layer bonded to the adhesive layer,
Wherein the lattice-shaped print pattern is formed on the same layer as the print layer so that a step is not generated,
The film layer is brought into close contact with the lattice-shaped print pattern so that the lattice-like print pattern is not reflected to the upper space of the tempered glass, and the lattice-like print pattern is visually interrupted when viewed downward in the upper space of the tempered glass Wherein the liquid crystal protective layer is formed on the surface of the substrate.

The method according to claim 1,
Wherein the print layer and the grid print pattern are printed in the same color and connected to each other.

Preparing a screening net to prepare a screening net by applying an emulsion to a screening net;
A pattern film preparation step of fabricating a pattern film in which a bezel printing area corresponding to a bezel area of a smart phone and a pattern printing area in which grid-like fine patterns are formed are formed;
A plate screen exposure step of exposing the plate making screen area except for the bezel printing area and the pattern printing area by irradiating light with the drawing film in close contact with the plate making net;
Developing the plate network to form a bezel ink permeation area and a pattern ink permeation area so that ink is permeated to an area where the bezel printing area and the pattern printing area are located;
The ink is permeated into the ink permeable region of the bezel in a state where the plate making net is in close contact with the tempered glass to form a print layer in the bezel region of the tempered glass, A printing step of forming a latticed print pattern in a central area;
A masking step of attaching a masking tape to a central region of the tempered glass so as to cover the grid print pattern;
A deposition layer forming step of depositing a printing layer of the tempered glass to form a deposition layer;
An ultrasonic cleaning step of ultrasonic cleaning the tempered glass with the masking tape attached thereto in a state where the masking tape is removed; And
A film layer adhered to cover the vapor-deposited print layer and the vapor-deposited layer, a pressure-sensitive adhesive layer bonded to the film layer and adhered to the liquid crystal surface of the smartphone, and a rigid film layer bonded to the pressure- And attaching the film layer of the beaten tape to the printing layer and the grid printing pattern.

The method of claim 3,
Wherein in the printing step, the ink absorptive portion absorbing the ink is scrubbed into the plate making net to simultaneously form the printing layer and the grid printing pattern.

5. The method of claim 4,
The printing layer and the lattice-like printed pattern are formed of inks of the same color,
The film layer is brought into close contact with the grid printing pattern printed with the ink so that the grid printing pattern is not reflected to the upper space of the tempered glass so that the grid printing pattern is moved downward Wherein the liquid crystal display panel is visually interrupted when viewed from the front.

tempered glass;
An OCR layer bonded to a lower surface of the tempered glass;
An adhesive layer adhered to a lower surface of the OCR layer;
A printing layer printed on a bezel region in a lower surface of the tempered glass;
A grid printing pattern printed in a lattice form in a central area of a lower surface of the tempered glass;
A deposition layer deposited on the printing layer;
A film layer made of a light transmitting material;
An adhesive layer bonded to the film layer and adhered to the liquid crystal surface of the smartphone; And
And a rigid film layer bonded to the adhesive layer,
Wherein the lattice-shaped print pattern is formed on the same layer as the print layer so that a step difference is not generated by the print layer,
The film layer is brought into close contact with the grid printing pattern printed with the ink so that the grid printing pattern is not reflected to the upper space of the tempered glass so that the grid printing pattern is moved downward So as to be visually intercepted when viewed from the front side.