WO2016010256A1

WO2016010256A1 - Detachable sheet for protecting liquid crystal, and manufacturing method therefor

Info

Publication number: WO2016010256A1
Application number: PCT/KR2015/005531
Authority: WO
Inventors: 김재우; 최미영
Original assignee: 김재우; 최미영
Priority date: 2014-07-18
Filing date: 2015-06-02
Publication date: 2016-01-21
Also published as: KR20160010065A

Abstract

The present invention relates to a detachable sheet for protecting a liquid crystal, and a manufacturing method therefor, and in order to solve the technical problem, provided are a detachable sheet for protecting a liquid crystal, and a manufacturing method therefor, which form a lattice type printed pattern in the central area of tempered glass so as to prevent the formation of stepped parts in the central area of the tempered glass when forming a printed layer in a bezel area of the tempered glass, thereby simultaneously preventing the formation of air bubbles in a space having the stepped parts and preventing the problem of color transmissivity loss on the entire surface of the tempered glass as in a conventional sheet. The detachable sheet for protecting a liquid crystal, of the present invention, according thereto comprises: the tempered glass; the printed layer to be printed on the bezel area in the middle of the lower surface of the tempered glass; a lattice type printed pattern to be printed in a lattice shape in a central area corresponding to a visual area of a liquid crystal of a smart phone in the middle of the lower surface of the tempered glass; a deposition layer to be deposited on the printed layer; an OCA layer to be attached so as to cover the lattice type printed pattern and the deposition layer; a film layer to be coupled with the OCA layer and made of a light-transmitting material; an adhesion layer to be coupled with the film layer and to be adhered to a liquid crystal surface of the smart phone; and a removal film layer to be coupled to the adhesion layer, wherein the lattice type printed pattern is formed on the layer, which is the same as the printed layer, so as to prevent the formation of the stepped part due to the printed layer, the film layer is closely attached to the lattice type printed pattern printed with ink so as to prevent the reflection of the lattice type printed pattern toward the upper space of the tempered glass, thereby visually blocking the lattice type printed pattern when viewing the lattice type printed pattern from the upper space of the tempered glass to the lower direction thereof.

Description

LCD protective detachable sheet and its manufacturing method

The present invention relates to a liquid crystal protective detachable sheet and a method for manufacturing the same, and more particularly, to a liquid crystal protective detachable sheet for attaching and detaching a liquid crystal such as a smartphone by a user to protect the liquid crystal.

Recently, with the popularity of smart phones, accessories for smart phones are increasing.

Among the accessory products mounted on the smart phone, a liquid crystal protective sheet for protecting the liquid crystal of the smart phone is 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, it is attached to the liquid crystal of the smartphone to protect the liquid crystal.

However, the liquid crystal protective sheet of the film material is made of a soft material when a single user attaches, and bubbles are generated between the liquid crystal surface and the film, causing a problem that cannot be seen aesthetically, and furthermore, the liquid crystal protective sheet of the film material Since it is usually made of a resin material, causing a problem that is easily damaged by scratches.

As a conventional LCD protective sheet for solving such a problem, the touch screen panel protective sheet and the manufacturing method of the Republic of Korea Patent Publication No. 10-2014-0065155 and the manufacturing method thereof and the screen display area of the display display terminal of the bottom of the touch screen panel-shaped tempered glass layer and Forming a printing layer having different transparency through an inkjet printing process on each of the bezel regions; Forming an adhesive layer on the bottom of the printed layer through a silk screen process or a molding process; Forming an adhesive layer on the bottom of the adhesive layer through a silk screen process or a molding process; Attaching a protective protective film and a release film to the top of the tempered glass layer and the bottom of the adhesive layer, respectively, by adding an inkjet printing process without a separate process to form a filling layer at the bottom of the tempered glass layer. By continuously forming a printed layer and a transparent printed layer in which color is printed on each of the bezel area and the screen display area, it is possible to prevent the generation of bubbles by eliminating the step caused by the printed layer, as well as to form a filling layer. As a result, it is possible to improve the production yield as a result.

This prior art solves the above-mentioned problems by providing an advantage of preventing scratches from occurring by attaching a film having a pressure-sensitive adhesive layer to tempered glass rather than the aforementioned film type.

On the other hand, the prior art not only provides a tempered glass to prevent scratches, but also by forming a printing layer in the bezel area of the lower surface of the tempered glass, by the adhesive layer in the state to add color to the bezel area To easily adhere to the liquid crystal of the smartphone.

In this case, since the printing layer of the bezel area is formed to protrude with a predetermined thickness, a step is formed in the center area where the printing layer is not formed, and bubbles are formed between the sheet and the liquid crystal due to the space where the step is formed when attached to the liquid crystal. Triggered.

To this end, the prior art is to prevent the formation of a step by forming a transparent printing layer (reference numeral 510 of FIG. 5 in the prior art) in the central region of the tempered glass, the printing layer is not formed.

In this case, the prior art is a transparent printing layer (reference numeral 510 of FIG. 5 in the prior art) and the printing layer (reference numeral 505 in FIG. 5 in the prior art) through the inklet printing process in the central region of the tempered glass. Forming.

However, although the transparent printing layer formed in the central area of the tempered glass is printed transparently, but the transparency is applied to the entire area of the center area of the tempered glass, the transparency of the color is substantially lowered, so that the actual It causes the problem of decreasing the brightness.

In addition, the prior art is because the transparent printing layer formed in the central region of the tempered glass is applied to the entire central region by the inkjet printing method, it causes a problem that does not dry well after the application of the ink, and thus must perform the tea ceremony drying and the tea ceremony printing. It is causing the problem of low productivity.

In addition, although the prior art is based on the contents of the substrate, the transparent printing layer and the printing layer are printed at one time by the inkjet method, but the transparent printing layer uses transparent ink raw materials, and the printing layer uses color ink as a raw material. In other words, the transparent print layer and the print layer have a problem that the work is not performed at one time.

The present invention has been made to solve the above problems, the technical problem to be solved is to form a printing layer in the bezel area of the tempered glass in order to prevent the step is generated in the center area of the tempered glass Forming a grid-shaped printing pattern in the area, to prevent bubbles from occurring in the space in which the step is formed, and to prevent the problem of falling color transmittance of the entire surface of the tempered glass as in the prior art and a method of manufacturing the same To provide.

In addition, another technical problem of the present invention is to form a grid-shaped printing pattern in the central area of the tempered glass in order to prevent the step is generated in the central area of the tempered glass when forming a printing layer in the bezel area of the tempered glass, the center The lattice printing pattern of the area and the printing layer of the bezel area are printed in one operation so that they can be dried easily, and the production cost can be greatly increased while increasing productivity by avoiding the use of expensive transparent transparent dyes and expensive printing equipment. The present invention provides a detachable sheet for protecting a liquid crystal and a method of manufacturing the same.

In addition, another technical problem of the present invention is to form a grid-shaped printing pattern in the central region of the tempered glass in order to prevent the step is generated in the central region of the tempered glass when forming a printing layer in the bezel region of the tempered glass, The present invention provides a liquid crystal protective detachable sheet and a method of manufacturing the same, in which a printing layer of a bezel area and a grid-shaped printing pattern of a central area are printed in the same color to shorten a printing process and maintain its transparency.

Liquid crystal protective detachable sheet of the present invention for achieving the above technical problem is tempered glass; A printed layer printed on a bezel area among lower surfaces of the tempered glass; A lattice printing pattern printed in a lattice form on a central area corresponding to a viewing area on a liquid crystal of a smartphone among lower surfaces of the tempered glass; A deposition layer deposited on the printed layer; An OCA layer bonded to cover the lattice printed pattern and the deposition layer; A film layer bonded to the OCA layer and 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 removable film layer bonded to the adhesive layer, wherein the lattice printing pattern is formed on the same layer as the printing layer so that a step is not generated by the printing layer. When the grid-like printing pattern is in contact with the ink-printed grid-patterned pattern so that the grid-patterned printing pattern is not reflected to the upper space of the tempered glass, the grid-shaped print pattern is viewed downward from the upper space of the tempered glass. It is characterized in that it is blocked visually.

In this case, the printing layer and the grid-shaped printing pattern may be printed in the same color and connected to each other.

On the other hand, the manufacturing method of the liquid-crystal protective detachable sheet for achieving the above technical problem is a plate making network preparation step of preparing the plate making network by applying an oil to the plate making network; A drawing film preparation step of manufacturing a drawing film having a bezel printing area corresponding to the bezel area of the smartphone and a pattern printing area having a lattice-like fine pattern formed thereon; A plate making network exposure step of exposing the remaining plate making network area except for the bezel printing area and the pattern printing area by irradiating light in a state where the pattern film is in close contact with the plate making network; A plate making network developing step of developing the plate making network to form a bezel portion ink permeation region and a pattern portion ink permeation region so that ink is transmitted to a region where the bezel printing region and the pattern printing region are located; In the state where the platemaking network is in close contact with the tempered glass, ink is transmitted through the ink permeable region of the bezel to form a printing layer in the bezel region of the tempered glass, and ink is transmitted through the ink permeable region of the patterned portion so as to transmit the ink. A printing step of forming a lattice printing pattern in a central area; A masking step of attaching a masking tape to a central area of the tempered glass to cover the grid-shaped printing pattern; A deposition layer forming step of forming a deposition layer by depositing the printed layer of the tempered glass; An ultrasonic cleaning step of ultrasonically washing the tempered glass to which the masking tape is attached while the masking tape is removed; And an OCA layer bonded to cover the lattice-shaped printing pattern and the deposition layer, a film layer bonded to the OCA layer, an adhesive layer bonded to the resin film layer, and adhered to the liquid crystal surface of the smartphone; And a removable tape attaching step of adhering the OCA layer of the removable tape including the removable film layer bonded to the adhesive layer to the printing layer and the lattice printing pattern.

In this case, in the printing step, the ink absorbing part that absorbs ink may be scrubbed onto the plate making network to simultaneously form the printing layer and the lattice printing pattern.

In addition, the printing layer and the grid-shaped printing pattern is formed of ink of the same color, the film layer is in close contact with the grid-shaped printing pattern printed with the ink so that the grid-shaped printing pattern is reflected to the upper space of the tempered glass By not preventing, the grid-shaped printing pattern may be visually blocked when looking downward from the upper space of the tempered glass.

According to the present invention, when the printing layer is formed in the bezel area of the tempered glass, a grid-like printing pattern is formed in the center area of the tempered glass in order to prevent the step from occurring in the center area of the tempered glass, thereby forming bubbles in the area where the step is generated. There is an effect that can maintain the color transmittance of the tempered glass central area while preventing the occurrence of.

In addition, when the printing layer is formed on the bezel area of the tempered glass, the present invention forms a lattice printing pattern in the center area of the tempered glass in order to prevent a step from occurring in the center area of the tempered glass. Since the printed pattern and the printed layer of the bezel area are printed by only one printing operation, there is an effect of significantly reducing the manufacturing cost while increasing productivity by not using an expensive printing transparent dye and an expensive printing equipment.

In addition, in the present invention, when the printing layer is formed in the bezel region of the tempered glass, a grid-like printing pattern is formed in the center region of the tempered glass in order to prevent a step from occurring in the center region of the tempered glass, but the printing layer of the bezel region is formed. The printing process is shortened by printing the lattice print pattern of the center area and the same color, while the lattice print pattern is not visible in the upper space of the tempered glass by the film layer, thereby maintaining transparency. .

1 is a partial cross-sectional view of the disassembled state of the liquid crystal protective detachable sheet according to an embodiment of the present invention.

FIG. 2 is a bottom view of a state in which a printing layer and a grid-like printing pattern are formed on a bottom of tempered glass shown in FIG. 1;

3 is a cross-sectional view of a state in which the liquid crystal protective detachable sheet shown in FIG. 1 is combined.

Figure 4 is a flow chart for the manufacturing method of the liquid crystal protective detachable sheet according to an embodiment of the present invention.

5 to 12 is a process configuration diagram according to each step of the manufacturing method of the liquid crystal protective detachable sheet shown in FIG.

Hereinafter, other objects and features of the present invention in addition to the above object will be apparent through a description of the embodiments 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. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art, and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

Hereinafter, a liquid crystal protective detachable sheet and a method of manufacturing the same according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 12.

First, a description will be given of the structure of the liquid crystal protective detachable sheet according to an embodiment of the present invention.

1 is a partial cross-sectional view of an exploded state of a liquid crystal protective detachable sheet according to an embodiment of the present invention. FIG. 2 is a bottom view of a state in which a printing layer and a grid-like printing pattern are formed on the bottom of the tempered glass shown in FIG. 1. 3 is a cross-sectional view of the state in which the liquid crystal protective detachable sheet shown in FIG. 1 is combined.

As shown in Figures 1 to 3, the liquid crystal protective detachable sheet according to an embodiment of the present invention is a tempered glass 10, a printed layer 20, a grid-shaped printing pattern 30, a deposition layer 40, An OCA layer 51, a film layer 52, an adhesive layer 53, and a removable film layer 54 are included.

The tempered glass 10 is a layer for protecting the liquid crystal surface of the smart phone, and the liquid crystal protective detachable sheet is configured to be positioned at the outermost part and is contacted by the user's hand of the smart phone. That is, the tempered glass 10 is in contact with the touch screen formed on the liquid crystal of the smartphone when the user's hand is touched.

The print layer 20 is formed by ink printing by a silkscreen printing technique, and is printed on the bezel area of the lower surface of the tempered glass 10. In this case, the print layer 20 is added to the color, by adding color to the bezel area of the smart phone, the smart phone to play a role in the liquid crystal outer region beautifully.

The grid-shaped printing pattern 30 is formed by the ink is printed by the silk screen printing method, the grid is printed in a grid form in the central area corresponding to the field of view on the liquid crystal of the smartphone among the lower surface of the tempered glass 10 do. Here, the grid-shaped printing pattern 30 may be variously modified according to the pattern of the silk screen as well as the linear grid form shown in the drawing. Here, the grid-like printing pattern 30 is configured on the same layer as the printing layer 20 to prevent the step is generated by the printing layer 20.

Here, the printed layer 20 and the grid-shaped print pattern 30 is printed in one process by a silkscreen printing method and connected to each other, in this case, the print layer 20 and the grid-shaped print pattern 30 Since silver is formed by the silkscreen printing technique, it is printed in the same color.

The deposition layer 40 is formed of a layer deposited on the printed layer 20, in this case, the deposition layer 40 is formed by an electron beam evaporation (E-beam evaporation), the deposition layer 40 is SiO2 or It is formed of a material containing at least one of TiO2, thereby protecting the printed layer 20 and improving the reflectance to improve the identification of the printed layer 20 and at the same time to form a flat surface in the bezel area.

The OCA layer 51 is formed of an adhesive material, and is bonded to cover the lattice-shaped print pattern 30 and the deposition layer 40.

The film layer 52 is a resin film made of a light transmissive material such as a high transparency PET film, and is bonded to the OCA layer 51 to cover the lattice printing pattern 30 and the deposition layer 40. The film layer 52 provides a space to be bonded to the adhesive layer 53 to be described later, and is closely adhered to the lattice print pattern 30 on which the deposition layer 40 is not formed, thereby reflecting the reflectivity of the lattice print pattern 30. By lowering this significantly, when the user sees the grid-like print pattern 30 through the tempered glass 10, the grid-like print pattern 30 is made invisible.

The adhesive layer 53 is bonded to the film layer 52. The adhesive layer 53 serves to attach or detach the LCD protective sheet to the liquid crystal surface of the smartphone as desired by the user.

The removable film layer 54 is bonded to the adhesive layer 53. The remover film layer 54 may be used by arbitrarily removing the liquid crystal protective detachable sheet from the liquid crystal while protecting the adhesive layer 53.

Since the liquid crystal protective detachable sheet according to the exemplary embodiment of the present invention having the configuration as described above uses the tempered glass 10, scratches as illustrated in the background art may be provided.

In this case, the liquid crystal protective detachable sheet according to the embodiment of the present invention, as in the prior art illustrated in the background art, when the printing layer 20 is formed in the bezel area of the tempered glass 10 of the tempered glass 10 In order to prevent a step from occurring in the center area, the grid-shaped printing pattern 30 is formed in the center area of the tempered glass 10, thereby preventing bubbles from being generated in the area where the step occurs. It is possible to maintain the color transmittance of the.

In addition, the liquid crystal protective detachable sheet according to the embodiment of the present invention to prevent a step is generated in the central region of the tempered glass 10 when the printing layer 20 is formed in the bezel region of the tempered glass 10. Since the grid-shaped printing pattern 30 is formed in the central area of the tempered glass 10, the grid-shaped printing pattern 30 in the center area and the printing layer 20 in the bezel area are printed by only one printing operation. By not using expensive transparent transparent dyes and expensive printing equipment, it is possible to significantly reduce manufacturing costs while increasing productivity.

In addition, the liquid crystal protective detachable sheet according to the embodiment of the present invention to prevent a step is generated in the central region of the tempered glass 10 when the printing layer 20 is formed in the bezel region of the tempered glass 10. The lattice printing pattern 30 is formed in the center area of the tempered glass 10, but the printing process is performed by printing the printing layer 20 of the bezel area and the lattice printing pattern 30 of the center area with the same color. While being shortened, the lattice-shaped printing pattern 30 is not visible in the upper space of the tempered glass 10 by the film layer 52 so that transparency can be maintained.

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

Figure 4 is a flow chart for the manufacturing method of the liquid crystal protective detachable sheet according to an embodiment of the present invention. 5 to 12 are process charts according to the respective processes of the method for manufacturing the liquid crystal protective detachable sheet shown in FIG. 4.

As shown in FIG. 4, the detachable sheet for protecting the liquid crystal according to the exemplary embodiment of the present invention includes a plate making network preparation step (S10), a pattern film preparation step (S20), a plate making network exposure step (S30), and a plate making network development step ( S40), the printing step (S50), the masking step (S60), the deposition layer forming step (S70), the ultrasonic cleaning step (S80), and a removable tape attaching step (S90).

The plate making network preparation step (S10) is a step of preparing the plate making network 1 by applying an emulsion to the plate making network 1 as shown in FIG. 5. In this case, the plate making network 1 is formed of a stainless material in order to minimize the spread of the ink and to prevent the pattern from collapsing when forming the printing layer 20 and the grid-shaped printing pattern 30 to be described later, weaving grid It is preferable to implement in the form (1a). In this case, the lattice spacing of the platemaking network 1 may be formed from 20 micrometers to 40 micrometers to implement a high resolution pattern.

In the drawing film preparation step S20, as shown in FIG. 6, the bezel printing area 2b corresponding to the bezel area of the smartphone and the pattern printing area 2a corresponding to the lattice printing pattern are formed. (2) manufacturing step. Here, the design film 2 may include a bezel printing area 2b corresponding to a printing layer 20 and a lattice printing pattern 30 which will be described later on one surface of a film having a high light transmittance (hereinafter referred to as a transparent resin film). The pattern printing area 2a is printed. In this case, the bezel printing area 2b and the pattern printing area 2a are made of ink with little light transmittance during the subsequent exposure operation.

As shown in FIG. 7, the platemaking network exposure step S30 is performed in a state in which the bezel printing region 2b and the pattern printing region 2a are printed on the platemaking network 1. Is irradiated to expose the remaining plate making network 1 area except the plate making network 1 area where the bezel printing area 2b and the pattern printing area 2a are located. Here, the exposure operation may be a light source may be composed of a mercury lamp, a fresnel lens portion (4) formed in the convex lens shape in the region through which the light source 3 of the mercury lamp passes, the plurality of wrinkles are spaced apart. By arranging, light scattering generated from a light source of mercury lamp is reduced to minimize the refraction and reflection of the light, thereby improving the straightness of the light, so that the sawing phenomenon is not generated during the printing operation described later. When the exposure operation is performed for a predetermined time, the platemaking network 1 hardens the emulsion of the remaining areas except for the areas where the bezel print area 2b and the pattern print area 2a are located.

The plate making network development step (S40) is to develop the plate making network (1) by applying the developer to the plate making network (1) after separating the pattern film (2) in close contact with the plate making network (1) in the trial network, Removing the unexposed areas by forming the bezel ink penetrating area and the pattern ink penetrating area such that only the areas where the bezel print area 2b and the pattern print area 2a are located are allowed to transmit ink.

In the printing step (S50), as shown in Figure 8, in order to protect the liquid crystal of the smart phone to perform a one-component printing on the tempered glass 10 to form a printed layer 20 and a grid-shaped printing pattern 30 The ink 6 is applied to the bezel ink penetrating region and the pattern ink penetrating region in a state in which the bezel portion ink penetrating region and the pattern forming ink penetrating region are brought into close contact with the tempered glass 10. Pressing to transmit the light, the print layer 20 is formed in the bezel area of the tempered glass 10, and the lattice-shaped printing pattern 30 is formed in the center area of the tempered glass 10. That is, in the printing step S50, the ink absorbing part absorbing the ink 6 is scrubbed onto the plate making network 1 to simultaneously form the print layer 20 and the grid-shaped printing pattern 30. In addition, since the ink 6 forming the printed layer 20 and the grid-shaped printing pattern 30 is formed by a silkscreen printing technique, it is formed of ink of the same color. As such, when the printing step S50 is performed, as shown in FIG. 9, the printed layer 20 and the grid-shaped printing pattern 30 are formed on the lower surface of the tempered glass 10.

The masking step (S60) is a step of attaching the masking tape 60 to the central region of the tempered glass 10 to cover the grid-shaped printing pattern 30 as shown in FIG. 10.

The deposition layer forming step (S70) is a step of forming a deposition layer 40 by performing deposition on the printed layer 20 of the tempered glass 10 as shown in FIG. 11. In this case, the deposition layer 40 is formed by E-beam evaporation, and the deposition layer 40 is formed of a material including at least one of SiO 2 or TiO 2, thereby protecting the printed layer 20. In addition, the reflectivity is improved to improve the discriminating power of the printed layer 20 and at the same time, a flat surface is formed in the bezel area.

The ultrasonic cleaning step (S80) is a step of removing the sticking residue formed on the surface to which the masking tape 60 is attached by ultrasonic cleaning after removing the masking tape 60.

12, the removable tape attaching step (S90) is a step of attaching the removable tape 50 in a state where the masking tape 60 is removed. In this case, the removable tape 50 includes an OCA layer 51 bonded to cover the above-described lattice printing pattern 30 and the deposition layer 40, and a film layer 52 bonded to the OCA layer 51. And a pressure-sensitive adhesive layer 53 bonded to the resin film layer 52 and adhered to the liquid crystal surface of the smartphone, and a removable film layer 54 bonded to the pressure-sensitive adhesive layer 53. In this case, the film layer 52 is in close contact with the grid-patterned printing pattern 30 printed with ink so that the grid-patterned printing pattern 30 is not transmitted to the outside of the smartphone, thereby visually displaying the grid-patterned printing pattern 30. Will be blocked.

As described above, the method of manufacturing a detachable sheet for protecting a liquid crystal according to an exemplary embodiment of the present invention may be performed in the case of forming the printing layer 20 in the bezel area of the tempered glass 10, as in the background art. By forming the grid-shaped printing pattern 30 in the center area of the tempered glass 10 to prevent the step is generated in the center area of the), the color transmittance of the entire surface of the tempered glass 10 falls as in the prior art It can be solved.

In addition, the manufacturing method of the liquid crystal protective detachable sheet according to an embodiment of the present invention is that when the printing layer 20 is formed in the bezel area of the tempered glass 10, a step is generated in the center area of the tempered glass 10. In order to prevent the formation of the grid-like printing pattern 30 in the central region of the tempered glass 10, the grid-like printing pattern 30 of the central region and the printed layer 20 of the bezel region to be printed by only one printing operation. Therefore, it is possible to significantly reduce manufacturing costs while increasing productivity by not using expensive transparent transparent dyes and expensive printing equipment.

In addition, the manufacturing method of the liquid crystal protective detachable sheet according to an embodiment of the present invention is that when the printing layer 20 is formed in the bezel area of the tempered glass 10, a step is generated in the center area of the tempered glass 10. In order to prevent the formation of the grid-like printing pattern 30 in the central area of the tempered glass 10, the printing layer 20 of the bezel area and the grid-like printing pattern 30 of the central area by printing the same color While the printing process is shortened, the transparency of the grid-like printing pattern 30 is not visible in the upper space of the tempered glass 10 by the film layer 52.

In the present invention as described above has been described by the specific embodiments, such as specific components and limited embodiments and drawings, but this is provided to help a more general understanding of the present invention, the present invention is not limited to the above embodiments. For those skilled in the art, various modifications and variations are possible from these descriptions.

Therefore, the spirit of the present invention should not be limited to the described embodiments, and all of the equivalents and equivalents of the claims, as well as the following claims, will fall within the scope of the present invention. .

Claims

Tempered glass 10;

A printed layer 20 printed on a bezel area among lower surfaces of the tempered glass 10;

A grid-like printing pattern 30 printed in a lattice form on a central area corresponding to a viewing area on a liquid crystal of a smartphone among lower surfaces of the tempered glass 10;

A deposition layer 40 deposited on the printed layer 20;

An OCA layer 51 bonded to cover the lattice printed pattern 30 and the deposition layer 40;

A film layer 52 bonded to the OCA layer 51 and made of a light transmitting material;

An adhesive layer 53 bonded to the film layer 52 and adhered to the liquid crystal surface of the smartphone; And,

Includes; the removable film layer 54 is bonded to the adhesive layer 53,

The grid-shaped printing pattern 30 is formed on the same layer as the printing layer 20 to prevent the step is generated by the printing layer 20,

The film layer 52 is in close contact with the lattice printing pattern 30 printed with the ink so that the lattice printing pattern 30 is not reflected to the upper space of the tempered glass 10, thereby printing the lattice printing. Removable sheet for LCD protection, characterized in that the pattern 30 is visually blocked when looking downward in the upper space of the tempered glass (10).
The method of claim 1,

The printing layer (20) and the grid-shaped printing pattern 30 is printed in the same color, characterized in that the removable sheet for protecting the LCD, characterized in that connected to each other.
A plate making network preparation step (S10) of preparing the plate making network (1) by applying an oil to the plate making network (1);

A drawing film preparation step (S20) of manufacturing a drawing film 2 having a bezel printing area 2b corresponding to the bezel area of the smartphone and a pattern printing area 2a having a lattice-shaped fine pattern formed thereon;

A plate-making process for exposing the remaining plate-making network 1 area except for the bezel print area 2b and the pattern-printing area 2a by irradiating with light while the pattern film 2 is in close contact with the plate-making network 1. Network exposure step (S30);

A plate making network development step of developing the plate making network 1 to form a bezel portion ink permeation region and a pattern portion ink permeation region so that ink is transmitted to a region where the bezel printing region 2b and the pattern printing region 2a are located. (S40);

The printing layer 20 is formed in the bezel area of the tempered glass 10 by allowing the ink 6 to pass through the bezel portion ink transmission area while the platemaking network 1 is in close contact with the tempered glass 10. A printing step (S50) of forming a lattice-shaped printing pattern (30) in the central region of the tempered glass (10) by transmitting ink (6) through the ink transmission region of the pattern portion;

A masking step (S60) of attaching a masking tape 60 to a central area of the tempered glass 10 so as to cover the grid-shaped printing pattern 30;

A deposition layer forming step (S70) of forming a deposition layer 40 by depositing the printed layer 20 of the tempered glass 10;

An ultrasonic cleaning step (S80) of ultrasonically washing the tempered glass 10 to which the masking tape 60 is attached while the masking tape 60 is removed; And,

An OCA layer 51 bonded to cover the lattice printed pattern 30 and the deposition layer 40, a film layer 52 bonded to the OCA layer 51, and the resin film layer 52. The OCA layer 51 of the removable tape 50 including an adhesive layer 53 bonded to the liquid crystal surface of the smartphone and adhered to the adhesive layer 53, and a removable film layer 54 bonded to the adhesive layer 53. ) Attaching the removable tape (S90) to the printing layer (20) and the lattice printing pattern (30).
The method of claim 3,

In the printing step (S50), the ink absorbing portion absorbing ink is scrubbed onto the plate making network 1 to form the printing layer 20 and the lattice printing pattern 30 at the same time, characterized in that the removable sheet for protection. Manufacturing method.
The method of claim 4, wherein

The printing layer 20 and the grid-shaped printing pattern 30 is formed of the same color ink,

The film layer 52 is in close contact with the lattice printing pattern 30 printed with the ink so that the lattice printing pattern 30 is not reflected to the upper space of the tempered glass 10, thereby printing the lattice printing. Method of manufacturing a removable protective sheet for liquid crystal protection, characterized in that the pattern (30) to be visually blocked when looking downward in the upper space of the tempered glass (10).