KR101783091B1 - manufacturing method of removal sheet for protecting liquid crystal - Google Patents

manufacturing method of removal sheet for protecting liquid crystal Download PDF

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Publication number
KR101783091B1
KR101783091B1 KR1020150089844A KR20150089844A KR101783091B1 KR 101783091 B1 KR101783091 B1 KR 101783091B1 KR 1020150089844 A KR1020150089844 A KR 1020150089844A KR 20150089844 A KR20150089844 A KR 20150089844A KR 101783091 B1 KR101783091 B1 KR 101783091B1
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South Korea
Prior art keywords
printing
layer
pattern
ink
tempered glass
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KR1020150089844A
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Korean (ko)
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KR20170000649A (en
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최미영
김재우
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최미영
김재우
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Priority to KR1020150089844A priority Critical patent/KR101783091B1/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
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10174—Coatings of a metallic or dielectric material on a constituent layer of glass or polymer
    • B32B17/10183—Coatings of a metallic or dielectric material on a constituent layer of glass or polymer being not continuous, e.g. in edge regions
    • B32B17/10192—Coatings of a metallic or dielectric material on a constituent layer of glass or polymer being not continuous, e.g. in edge regions patterned in the form of columns or grids
    • 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
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10247—Laminated safety glass or glazing containing decorations or patterns for aesthetic reasons
    • B32B17/10256—Laminated safety glass or glazing containing decorations or patterns for aesthetic reasons created by printing techniques
    • B32B17/10275—Laminated safety glass or glazing containing decorations or patterns for aesthetic reasons created by printing techniques on interlayer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/0007—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding involving treatment or provisions in order to avoid deformation or air inclusion, e.g. to improve surface quality
    • 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
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/14—Printing or colouring
    • B32B38/145—Printing
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • 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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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Liquid Crystal (AREA)
  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

Disclosed is a detachable sheet for protecting liquid crystal, which is obtained by bonding a highly transparent optical material (OCA) or a highly transparent optical resin (OCR) directly to a tempered glass to improve the adhesion to a bezel region, and a method for producing the same. Another object of the present invention is to provide a printing method for forming a printing layer in a bezel region by forming a lattice type printing pattern to further prevent occurrence of a step and to maintain good color transmittance of the entire surface of the tempered glass, The present invention relates to a liquid crystal display device and a liquid crystal display device, which are capable of performing a printing operation of the grid printing pattern and a printing layer of a bezel area in a single operation without using a printing device, Sheet and a manufacturing method thereof.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method of manufacturing 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 liquid crystal protective detachable sheet, comprising: a plate net preparing step of preparing a plate net by applying an oil to a plate 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 from which the masking tape has been removed in a state in which 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-sensitive adhesive layer Wherein the film layer of the rimmed tape is adhered to the vapor deposition layer and the grid printing pattern,
In the printing step, an ink absorbing portion that absorbs ink is scrubbed into the plate making net to simultaneously form the printing layer and the grid printing pattern,
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 To be visually blocked when viewed,
The deposition layer may be formed by E-beam evaporation using at least one of SiO 2 and TiO 2,
Wherein the film layer is made of a highly transparent PET film,
Wherein the plate making net is formed of a stainless steel material having a lattice shape of a weaving method,
And the lattice spacing is 20 to 40 micrometers.

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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.

Also, 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 the thickness is thin, the gaze is fixed and the immersion degree 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 (6)

delete delete A plate making net preparing step of preparing the plate making net 1 by applying an oil on the plate making net 1;
A pattern film preparation step of fabricating a pattern film (2) in which a bezel printing area corresponding to a bezel area of a smart phone and a pattern printing area in which lattice type fine patterns are formed are formed;
A plate screen exposure step of irradiating light to the plate making net (1) in a state in which the pattern film (2) is in close contact with the plate making screen to expose the plate making screen area excluding the bezel printing area and the pattern printing area;
Developing the plate making net (1) 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 printed layer 20 is formed in the bezel region of the tempered glass 10 by transmitting ink to the bezel ink permeable region in a state in which the plate making net 1 is in close contact with the tempered glass 10, A printing step of transmitting ink to an ink-permeable region to form a grid-like printed pattern (30) in a central region of the tempered glass (10);
A masking step of attaching a masking tape to a central region of the tempered glass (10) so as to cover the grid print pattern (30);
Forming a vapor deposition layer (40) on the printing layer (20) of the tempered glass (10) by vapor deposition;
An ultrasonic cleaning step of ultrasonic cleaning the tempered glass 10 from which the masking tape has been removed, with the masking tape removed; And
A film layer 52 adhered to cover the lattice-like printed pattern 30 and the deposition layer 40; an adhesive layer 53 bonded to the film layer 52 and adhered to the liquid crystal surface of the smartphone; The film layer 52 of the rimmed tape 50 including the rimmed film layer 54 bonded to the adhesive layer 53 is applied to the deposition layer 40 and the latticed print pattern 30 The method comprising:

In the printing step, an ink absorbing portion, which absorbs ink, is scratched on the screen printing net 1 to simultaneously form the printing layer 20 and the grid pattern 30,
The printing layer 20 and the grid pattern 30 are formed of ink of the same color,
The film layer 52 is brought into close contact with the grid printing pattern 30 printed with the ink so that the grid printing pattern 30 is not reflected to the upper space of the tempered glass 10, The pattern 30 is visually intercepted when viewed from the upper space of the tempered glass 10 in a downward direction,
The deposition layer 40 is formed by E-beam evaporation using at least one of SiO 2 and TiO 2,
The film layer 52 is made of a highly transparent PET film,
The plate making net (1) is formed of a stainless steel material having a lattice (1a)
Wherein the interval of the gratings (1a) is 20 to 40 micrometers. delete delete delete
KR1020150089844A 2015-06-24 2015-06-24 manufacturing method of removal sheet for protecting liquid crystal KR101783091B1 (en)

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KR102030480B1 (en) * 2017-09-22 2019-10-10 주식회사 맥스젠테크놀로지 Transparent parts of display having hidden design and method of manufacturing the parts
CN115494666B (en) * 2022-11-02 2024-05-17 业成光电（深圳）有限公司 Method for manufacturing liquid crystal module

Citations (2)

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Publication number Priority date Publication date Assignee Title
KR101200451B1 (en) * 2012-01-31 2012-11-12 정흥순 Protection film for mobile terminal display and manufacturing method thereof
KR101367304B1 (en) * 2013-06-10 2014-02-28 박성우 Silk screen printing method having bezel coating thickness for defect rate reduction in manufacture of tsp

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KR101472477B1 (en) 2012-11-21 2014-12-12 김영수 Touch screen panel protection sheet and manufacturing method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101200451B1 (en) * 2012-01-31 2012-11-12 정흥순 Protection film for mobile terminal display and manufacturing method thereof
KR101367304B1 (en) * 2013-06-10 2014-02-28 박성우 Silk screen printing method having bezel coating thickness for defect rate reduction in manufacture of tsp

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