WO2016068435A1

WO2016068435A1 - Panel for touch screen and method for manufacturing same

Info

Publication number: WO2016068435A1
Application number: PCT/KR2015/005867
Authority: WO
Inventors: 김지웅
Original assignee: 덕산에스지 주식회사
Priority date: 2014-10-30
Filing date: 2015-06-11
Publication date: 2016-05-06
Also published as: TW201616315A; TWI581143B; KR101522622B1

Abstract

A panel for a touch screen according to the present invention is formed comprising: a strengthened glass forming the exterior; an adhesive member attached to a surface of the strengthened glass; a display part that includes one or more of letters, shapes, patterns and a metallic texture and that is seen through the exterior of the adhesive member and the strengthened glass; and a printable layer arranged between the display part and the adhesive member for enabling the formation of the display part, wherein the display part is characterised by being formed in a film including a protective film and the adhesive member, and then a part of the protective film is removed and laminated in the strengthened glass.

Description

Touch screen panel and its manufacturing method

The present invention relates to a touch screen panel and a method for manufacturing the same, and more particularly, to form a plurality of display portions having a narrow gap on the film, and then to selectively implement a portion of the display glass on a curved surface by selectively laminating a part thereof. It relates to a touch screen panel and a manufacturing method thereof.

The present invention relates to a panel for a touch screen and a method of manufacturing the same to maximize the material use rate of the film by forming and then laminating each of the display units representing letters, patterns, patterns, colors and the like on the tempered glass and the film.

The present invention relates to a panel for a touch screen and a method of manufacturing the same so that bubble generation is minimized when laminating tempered glass and film.

The present invention relates to a panel for a touch screen that can be laminated on a curved portion or a flexible object of tempered glass, and a manufacturing method thereof.

A portable terminal refers to a communication device that can exchange calls and data while moving. Recently, a variety of useful functions have been implemented in portable terminals in the age of digital convergence.

For example, a user can use a handheld terminal to use audio on demand (AOD) and video on demand (VOD) services, make a video call where call parties look directly at the other party's face, or download a game. Play. That is, portable terminals are no longer limited to the area of voice communication equipment.

As the functions implemented in the portable terminals have been diversified, users have felt the need to control the portable terminals more quickly and conveniently. Accordingly, manufacturers of the portable terminals are referred to as display units (hereinafter referred to as "touch panels") in which touch screen functions are implemented. To the user.

On the other hand, the touch panel used in the portable terminal is a capacitive overlay method, a resistive overlay method, a surface acoustic wave method, a transmitter method and an infrared beam method. Etc. Among the various methods of the touch panel, the capacitive type is mainly used in the portable terminal.

The capacitive touch panel covers a window 1 made of PET, which is a dielectric or an insulator, and a silver paste electrode 2 coated on the bottom edge of the window 1 to be bonded thereafter, as shown in FIG. A PC sheet or glass (5) joined by an icon portion (3) on which a back is printed, the window (1) and a double-sided tape (4), and a double-sided tape (4) on the bottom of the glass (5). A dielectric film 6 made of a PET material to be bonded, an ITO coating layer 7 deposited with a transparent conductive material such as ITO on the touch sensing portion on the dielectric film 6, and the ITO coating layer 7 It is composed of a silver paste electrode (2) coupled to the edge of the to transmit its electrical signal to the control unit, and the LCD (9) bonded to the bottom surface of the dielectric film (6) by double-sided tape (8).

On the other hand, the touch screen panel is transparently configured so that the screen is projected to the center portion as shown in Figure 2 and the edge portion 45 is provided with colors, patterns, patterns and the like.

The edge portion 45 is formed by printing colors, patterns, patterns, etc. on the window film 40 to which the PET film is applied, and is coupled to the sheet 20 by the OCA 55.

However, the above structure and manufacturing process has the following problems.

That is, in order to form the edge portion 45, the PET film must be printed in a shape and size corresponding to the edge portion 45, so that the inner portion of the edge portion 45 is not printed in spite of the actual PET film Will be consumed.

Therefore, there is a problem that the material use rate of the film is lowered and the manufacturing cost of the touch screen panel is rapidly increased.

In addition, during the process of laminating the edge portion 45 of the structure described above, foreign matters are introduced when the double-sided tape is attached, and the phenomena and bubbles caused by using a large roller (roller having a length greater than the edge portion 45) are used. Due to the occurrence phenomenon, a large amount of defects are generated, and due to the shrinkage of the double-sided tape and the adhesive agglomeration, there is a disadvantage in that the process defect rate is very high.

Recently, in the case of smart phones, products having various shapes such as curved shapes have been released according to user's requirements.

However, the prior art as described above has a problem that it is not applicable to the curved surface or the surface of the flexible object.

An object of the present invention is to solve the problems of the prior art as described above, and after forming a large number of bands with a narrow gap on the film to touch the part to increase the material utilization of the film by selectively laminating a part of the tempered glass. The present invention provides a panel for a screen and a method of manufacturing the same.

Another object of the present invention is to provide a touch screen panel and a method of manufacturing the same to increase the material use rate of the film by forming and then laminating each of the display unit showing the letters, patterns, patterns, colors, etc. in the tempered glass and film. Is in.

Still another object of the present invention is to provide a panel for a touch screen and a method of manufacturing the same so that bubble generation is minimized when the tempered glass and the film are laminated.

It is still another object of the present invention to provide a touch screen panel and a method for manufacturing the same, which can be easily laminated to a curved portion or a flexible object of tempered glass.

The touch screen panel according to the present invention includes an adhesive member having an adhesive function on both sides, a display unit which is projected to the outside of the adhesive member, including any one or more of letters, patterns, patterns, and metal textures, and on one surface of the adhesive member. It includes a printable layer provided to form the display portion, and a tempered glass bonded to the other side of the adhesive member to form an appearance, the display portion is formed in a plurality of bands of narrow intervals on the printable layer It is cut and then laminated with the tempered glass.

The display unit may be formed in a straight line parallel to each other.

The printable layer is characterized in that made of a transparent material.

The printable layer is characterized in that it is formed of any one of the UV coating layer, PET, PC.

One side of the tempered glass, characterized in that the bezel is formed to have a predetermined width at the boundary of the display unit to block the light.

The method for manufacturing a touch screen panel according to the present invention includes a material preparation step of preparing a film including a protective film and an adhesive member, and at least one of letters, patterns, patterns, and metal textures on one surface of the adhesive member. A display portion forming step of forming a transparent printable layer enabling the formation of the display portion, and forming a plurality of display portions in a narrow gap on one surface of the printable layer; and a printable layer and an adhesive member. After cutting along with the step of attaching to one side of the tempered glass characterized in that the tempered glass attaching step of completing the touch screen panel.

In the step of attaching the tempered glass, the display unit is characterized in that the laminated on the tempered glass after a portion of the protective film is removed.

In the display portion forming step, the printable layer is characterized in that formed of any one of the UV coating layer, PET, PC.

In the forming of the display unit, the display unit may be formed in a straight line parallel to each other.

Before the step of attaching the tempered glass, a bezel forming step of forming a bezel on one side of the tempered glass is performed.

In the present invention, after forming a plurality of bands with a narrow gap in the film, a part of the touch screen panel was manufactured by selectively laminating a part of the tempered glass.

Therefore, it is possible to improve the material use rate of the film, there is an advantage that can significantly reduce the manufacturing cost.

In addition, in the present invention, it is possible to block bubbles in advance by maintaining the step when laminating the film on which the display part is formed with tempered glass, and significantly reduce the defect rate since the etching process for the central view window occupying the largest area is unnecessary. There is an advantage to that.

In addition, there is an advantage that can be laminated to the curved portion of the tempered glass or a flexible object.

1 is a longitudinal sectional view showing the structure of a capacitive touch panel according to the prior art;

2 is a view published in Republic of Korea Patent No. 10-1012066.

Figure 3 is a perspective view showing the external configuration of the touch screen panel according to the present invention.

Figure 4 is a plan view showing the appearance configuration of another embodiment of a touch screen panel according to the present invention.

5 is a longitudinal sectional view taken along line II ′ of FIG. 4 showing an internal configuration of a touch screen panel according to the present invention;

Figure 6 is a plan view showing a state in which the display unit is formed on the film of one configuration in the panel for a touch screen according to the present invention.

Figure 7 is a schematic diagram showing a state before the laminated glass and film as one configuration in the touch screen panel according to the present invention.

8 is a process flowchart showing a method for manufacturing a touch screen panel according to the present invention.

Figure 9 is a longitudinal cross-sectional view showing the state of the tempered glass and the film before the step of attaching tempered glass which is one step in the manufacturing method for a touch screen panel according to the present invention.

10 is a longitudinal sectional view taken along line II ′ of FIG. 4 showing an internal configuration of still another embodiment of a touch screen panel according to the present invention;

Hereinafter, the configuration of the touch screen panel according to the present invention will be described with reference to FIGS. 3 and 4.

3 is a perspective view showing an external configuration of a touch screen panel according to the present invention, and FIG. 4 is a plan view showing an external configuration of another embodiment of the touch screen panel according to the present invention.

Prior to this, the terms or words used in the present specification and claims should not be interpreted in the ordinary and dictionary sense, and the inventors may appropriately define the concept of terms in order to best explain their invention in the best way. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention based on the principle that the present invention.

Therefore, the embodiments described in the present specification and the configuration shown in the drawings are only preferred embodiments of the present invention, and do not represent all of the technical idea of the present invention, and various equivalents may be substituted for them at the time of the present application. It should be understood that there may be water and variations.

As shown in the drawing, the touch screen panel 100 according to the present invention is provided on the outer surface of the touch screen to form an appearance. The tempered glass 110 is provided on the outermost side, and the display unit is located behind the tempered glass 110. 120 is provided to expose the color, characters, patterns, symbols, etc. to the front of the tempered glass 110 to make the appearance of the touch screen panel 100 beautiful.

And the touch screen panel 100 according to the present invention can be applied to the tempered glass 100 having a curved appearance as shown in Figure 3, it is also applicable to the flat glass tempered glass 100 as shown in FIG.

That is, the display unit 120 has a shape in which a band parallel to the outside of the tempered glass 110 is spaced apart and laminated, and can be easily attached to the curved inner surface of the tempered glass 110, and the flat tempered glass The lamination is possible to 110, too.

The display unit 120 may be configured to have a different color, such as a manufacturer or model name, or may be configured to have a glossy appearance by depositing a glossy material with a transparent pattern.

In detail, the bezel 130 may be formed on the inner edge of the display unit 120 as illustrated in FIG. 4. The bezel 130 is formed on the back of the tempered glass 110, and is formed on an object different from the display unit 120 to be integrated, as shown in FIG.

When the bezel 130 is formed, the inside of the bezel 130 is transparently positioned to see the screen displayed at the rear, and when the bezel 130 is not formed, the display unit 120 is not formed. Only the unmarked part remains transparent, allowing you to see the screen displayed from behind.

That is, FIG. 5 is a longitudinal sectional view taken along the line II ′ of FIG. 4 showing an internal configuration of an embodiment of a touch screen panel according to the present invention, and is a longitudinal sectional view of an embodiment in which a bezel 130 is formed.

As shown in the drawing, a part of the bezel 130 is formed on the lower surface of the tempered glass 110, and the display unit 120 is formed on a film (see reference numeral 150 in FIG. 6) to be described below. It is laminated to cover a part.

5 is a schematic cross-sectional view for better understanding, and a detailed configuration thereof will be described in detail below.

Hereinafter, an arrangement in which the display unit 120 is formed on the film 150 will be described with reference to FIGS. 6 and 7.

FIG. 6 is a plan view showing a state in which a display unit is formed in a film as one component in the touch screen panel according to the present invention, and FIG. 7 is a laminate of tempered glass and film as one component in the touch screen panel according to the present invention. A schematic is shown showing the state before it is.

The display unit 120 is formed to reflect the technical spirit of the present invention, and is formed to be spaced apart from the film 150 in parallel.

In addition, the plurality of display units 120 formed in parallel to be spaced apart may be attached to the lower surface of the tempered glass 110 to complete the touch screen panel 100 as shown in FIG. 4. It is to increase the material usage rate.

Therefore, the film 150 is applicable to deposition, printing, pattern, and all of the transparent material is applicable. For example, the film 150 may be applied to a UV coating layer, PET PC (polycarbonate), and the like.

Referring to FIG. 7, a bezel 130 is formed on one surface of the tempered glass 110, and the display unit 120 is positioned on the upper / lower part of the tempered glass 110 on the left side as shown in the right figure of FIG. 7. The display unit 120 may be formed on the upper and lower portions of the 150, but be formed on the outside in accordance with the position of the bezel 130.

If the display unit 120 is to be formed in the same manner as described above, in order to complete one touch screen panel 100, the film 150 corresponding to the virtual line region shown in the right figure of FIG. 7 is required.

Therefore, the method of using the film 150 is not applied in this way, and as shown in FIG. 6, a plurality of display units 120 are formed in a plurality, and then separated and mounted on a separate jig to proceed with the lamination process.

6 shows that a plurality of display units 120 to be positioned at the upper side are formed in the film 150 of FIG. 6, and the display unit 120 to be positioned at the lower side of the tempered glass 110 is displayed at the bottom of FIG. 6. A plurality of) may be formed in the same arrangement as in the upper side, cut out using a laser processing process, and then the sheeting process may be carried out by seating on a separate jig.

Therefore, although a plurality of display units 120 having different shapes on the upper and lower portions of the tempered glass 110 may be formed on different films 150, the film 120 may be simultaneously formed on one film 150 as necessary. It may be.

The display unit 120 formed in the above arrangement is laminated on the upper and lower surfaces of the tempered glass 110 according to a desired shape and position, thereby completing the touch screen panel 100. Material usage rate can be increased.

In the embodiment of the present invention, the display unit 120 is provided only at positions spaced in parallel with each other, and is not formed at the left and right sides as shown in FIG. 7. Therefore, in the process of attaching the display unit 120 to the tempered glass 110, defects such as bubbles are not generated due to the step generated by the display unit 120.

Hereinafter, a method of manufacturing the touch screen panel 100 will be described with reference to FIGS. 4 to 9.

8 is a process flowchart showing a method for manufacturing a touch screen panel according to the present invention, and FIG. 9 is a state of the tempered glass and film before the step of attaching tempered glass, which is one step in the method for manufacturing a touch screen panel according to the present invention. It is a longitudinal cross-sectional view shown.

As shown in the drawing, the touch screen panel 100 includes a material preparation step (S100) for preparing a film 150 including a protective film 152 and an adhesive member 154, and letters on one surface of the adhesive member 154. Forming a printable layer 156 to form the display unit 120 including at least one of a pattern, a pattern, and a metal texture, and forming the display unit 120 on one surface of the printable layer 156. The display portion forming step (S200) and the tempered glass (110) by attaching the display unit 120 on one surface is completed by performing the step of attaching the tempered glass (S300) to complete the touch screen panel 100 in sequence.

The film 150 is provided with a protective film 152 on both sides, the adhesive member 154 is provided between the protective film 152, by removing any one of the protective film 152 on both sides of the adhesive member ( The printable layer 156 is formed on the exposed surface 154.

The printable layer 156 is configured to solve the problem that printing is not possible directly on the adhesive member 154, it may be formed of any one of the UV coating layer, PET, PC.

The display unit 120 is formed on the film 150 on which the printable layer 156 is formed to complete the display unit forming step (S200).

The film 150 in which the display portion forming step S200 is completed is shown in FIG. 9.

The bezel 130 may be selectively formed on the lower surface of the tempered glass 110. Therefore, the bezel forming step S250 may be performed at the same time as the material preparation step S100, or may be formed after the display forming step S200, as shown in FIG. 9.

After the display portion forming step (S200), a step of attaching the tempered glass (S300) is performed. The step of attaching the tempered glass (S300) is a process of laminating the tempered glass 110 and the film 150 on which the display unit 120 is formed as shown in FIG. 9 so as to be close to each other, and a part of the film 150 is laser processed. The protective film 152 is removed after being cut into a shape and a size corresponding to the display unit 120 by the method of FIG. 9 (see dotted line in FIG. 9), and thus, the tempered glass 110 and the display unit ( 120 is attached.

In this case, since the display unit 120 is in a flexible state, the display unit 120 may be pressed by using a roller or the like in a state of being positioned below the tempered glass 110.

And even if the tempered glass 110 has a curved shape as shown in Figure 3 can be laminated using a roller, even when using a roller having a length slightly larger than the width of the display unit 120 step (S300) Can be performed.

The scope of the present invention is not limited to the above-exemplified embodiments, and many other modifications based on the present invention will be possible to those skilled in the art within the above technical scope.

For example, in the exemplary embodiment of the present invention, the case in which the bezel 130 is provided on one surface of the tempered glass 110 is described. However, the bezel 130 may not be provided. In this case, the appearance of the touch screen panel 100 may be described. And cross section are shown in FIG. FIG. 10 omits the adhesive member 154 and the printable layer 156 for easy description as shown in FIG. 5.

In addition, in the exemplary embodiment of the present invention, the display unit 120 is described as being composed of a single layer, but the portion where the camera or the IR sensor is positioned may be printed with transparent or special ink, and may be deposited, printed a plurality of times, or patterned. Of course, the change can be applied.

In the present invention, after forming a large number of bands with a narrow gap in the film was configured to complete the touch screen panel by selectively laminating a part of the tempered glass.

Therefore, the material use rate of the film can be improved, thereby reducing the manufacturing cost of the touch screen pattern.

In addition, it is possible to block bubbles in advance by maintaining the step when laminating the film formed with the tempered glass, and the defect rate can be remarkably reduced since the etching process for the central view window occupying the largest area is unnecessary. As it can be laminated to curved surfaces of glass or flexible objects, it is expected to be widely applied to not only displays of various shapes but also flexible displays.

Claims

An adhesive member having an adhesive function on both sides,

A display unit which is projected to the outside of the adhesive member, including any one or more of letters, patterns, patterns, and metal textures;

A printable layer provided to form the display unit on one surface of the adhesive member;

It is configured to include a tempered glass bonded to the other side of the adhesive member to form an appearance,

The display unit is a panel for a touch screen, characterized in that formed on the printable layer in a narrow gap with a plurality of strips are cut and laminated with the tempered glass.
The touch screen panel of claim 1, wherein the plurality of band-shaped displays are formed in a straight line parallel to each other.
The touch screen panel as claimed in claim 2, wherein the printable layer is made of a transparent material.
The touch screen panel as claimed in claim 3, wherein the printable layer is formed of any one of a UV coating layer, PET, and a PC.
The method of claim 4, wherein one side of the tempered glass,

And a bezel formed to have a predetermined width at a boundary of the display unit to block light.
A material preparation step of preparing a film including a protective film and an adhesive member;

A transparent printable layer is formed on one surface of the adhesive member to enable the formation of a display unit including at least one of a letter, a pattern, a pattern, and a metal texture, and the plurality of display units have a narrow gap on one surface of the printable layer. A display portion forming step of forming a;

And cutting the strip-shaped display unit together with the printable layer and the adhesive member, and attaching it to one surface of the tempered glass to complete the touch screen panel.
The method of claim 6, wherein in the step of attaching the tempered glass,

And the display unit is laminated to the tempered glass after a part of the protective film is removed.
The method of claim 7, wherein in the display portion forming step,

The printable layer is a manufacturing method for a touch screen panel, characterized in that formed by any one of a UV coating layer, PET, PC.
The method of claim 8, wherein in the display portion forming step,

The strip-shaped plurality of display unit is a manufacturing method of a touch screen panel, characterized in that formed in a straight line parallel to each other.
The method of claim 8, wherein before the step of attaching the tempered glass,

Method of manufacturing a panel for a touch screen, characterized in that the bezel forming step of forming a bezel on one side of the tempered glass is carried out.