KR101486458B1 - Carrier substrate and method for preparing touch screen panel using the same - Google Patents

Abstract

The carrier substrate of the present invention comprises a substrate in the form of a plate; A first alignment key formed on the substrate to align the cell for the touch screen panel on the substrate; A second alignment key formed on the substrate for aligning the substrate upon formation of a pattern and a layer for manufacturing a touch screen panel on the cell for the touch screen panel; And a vent hole formed through the base material on a substrate portion where the cells for the touch screen panel are aligned. The carrier substrate can improve the productivity by solving the problem of surface protection and alignment of the cover glass substrate when manufacturing the touch screen panel by applying the vent hole and the alignment key.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a carrier substrate and a manufacturing method of a touch screen panel using the carrier substrate.

The present invention relates to a carrier substrate and a method for manufacturing a touch screen panel using the same. More particularly, the present invention relates to a carrier substrate that can improve productivity by solving the problem of surface protection and alignment of a cover glass substrate when manufacturing a touch screen panel by applying a vent hole and an alignment key, and manufacturing a touch screen panel using the same ≪ / RTI >

The touch screen panel is attached to the front surface of the display to receive the user's touch input. Generally, the touch screen panel forms a conductive line on the transparent plate surface and detects the position of the user's touch input through the conductive line. The touch screen panel is divided into a resistive touch screen panel that senses changes in current due to resistance and a capacitive touch screen panel that detects changes in capacitance. The electrostatic touchscreen panel is getting more and more used because it has better touch feeling than the resistive touchscreen panel.

A conventional electrostatic touch screen panel is a method in which a top surface of a transparent sensing electrode (transparent conductive film) such as indium tin oxide (ITO) is touched on a transparent substrate to find a position coordinate according to a change in capacitance of a touched region The position of the touch input of the user is detected.

In general, a touch screen panel includes at least two transparent substrates formed on one side of a transparent conductive film. In order to reduce the thickness of the two transparent conductive films and secure cost competitiveness, a cover window A window-integrated touch screen panel is being developed which forms a transparent conductive film on a substrate (e.g., a substrate).

A method of manufacturing such a window-integrated touch screen panel is divided into a cell type manufacturing method and a panel type manufacturing method. All of the above methods are subjected to several photolithography and deposition processes. In the panel type process, a plurality of decoration layers are formed on a mother glass sheet, and a plurality of cells are manufactured simultaneously by performing a photolithography process, a deposition process, And cutting the mother substrate by a cell unit to manufacture a touch screen panel. In addition, the cell type process is a method of manufacturing a touch screen panel by placing a cover glass substrate on which a decoration layer is formed on a jig, and performing a photolithography process, a deposition process, and the like in the same manner as the panel type process.

The panel type process is more advantageous than the cell type process in terms of substrate alignment and productivity since the sheet type process is performed. However, due to edge damage of the product during processing of the mother board, The deviation may become large, which may result in failure to satisfy the reliability standard.

Due to such a problem, a cell type process having a high degree of product completion is mainly used. However, the cell-type process can also cause alignment and handling problems due to jig clearances that seat the cells, thereby causing a deviation of several tens to several hundreds of microns between each pattern each time the process is performed . Accordingly, there is a need for a method of manufacturing a touch screen panel capable of solving such problems and improving productivity.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a carrier substrate that can improve productivity by solving the problem of surface protection and alignment of a cover glass substrate when manufacturing a touch screen panel, and a method of manufacturing a touch screen panel using the same.

The above and other objects of the present invention can be achieved by the present invention described below.

One aspect of the invention relates to a carrier substrate. The carrier substrate may be a plate-shaped substrate; A first alignment key formed on the substrate to align the cell for the touch screen panel on the substrate; A second alignment key formed on the substrate for aligning the substrate upon formation of a pattern and a layer for manufacturing a touch screen panel on the cell for the touch screen panel; And a vent hole formed through the base material on a substrate portion where the cells for the touch screen panel are aligned.

In an embodiment, the cell for the touch screen panel may be a cover glass substrate having a decoration layer formed on the bezel portion.

Preferably, the decoration layer may include a third alignment key corresponding to the first alignment key.

In embodiments, the thickness of the substrate may be 0.3 to 5 mm.

In an embodiment, the diameter of the vent hole may be 0.5 to 5 mm.

In an embodiment, the vent hole may be opened or closed by a cap.

In an embodiment, the carrier substrate may further comprise an adhesive layer on the substrate.

Preferably, the adhesive layer may be a silicone-based adhesive layer.

In embodiments, the substrate may be easy slip coated.

Preferably, the easy slip coating may be a coating of a fluorine-based or silicone-based material.

Another aspect of the invention relates to a method of manufacturing a touch screen panel. The manufacturing method comprising: aligning and attaching a cell for a touch screen panel using the first alignment key of the carrier substrate on the carrier substrate; Aligning a substrate of the carrier substrate with a second alignment key of the carrier substrate and forming a first circuit layer on the cell for the touch screen panel; Aligning the substrate with the second alignment key and laminating an insulation layer over the first circuit layer; Aligning the substrate with the second alignment key and forming a second circuit layer over the insulation layer; And separating the carrier substrate.

In an embodiment, the alignment of the cell for the touch screen panel may be to align a third alignment key formed in the decoration layer of the cell for the touch screen panel to the first alignment key.

In an embodiment, the first and second circuit layers may be manufactured by depositing a transparent conductive layer and then forming a metal conductive layer on the transparent conductive layer.

Preferably, at the time of forming the metal conductive layer, the vent hole of the carrier substrate may be sealed or opened by a cap according to a method of forming a metal conductive layer.

In a specific example, the carrier substrate may be separated by injecting air into the vent hole of the carrier substrate, or by using a knife edge or an organic solvent.

In an embodiment, the carrier substrate may be an easy slip coated.

Preferably, the easy slip coating may be a coating of a fluorine-based or silicone-based material.

The present invention has the effect of providing a carrier substrate which can improve productivity by solving the problem of surface protection and alignment of a cover glass substrate when manufacturing a touch screen panel, and a method of manufacturing a touch screen panel using the same.

1 is a cross-sectional view of a carrier substrate with a cell for a touch screen panel according to an embodiment of the present invention.
2 is a plan view of a carrier substrate with a cell for a touch screen panel according to an embodiment of the present invention.
3 is a process diagram illustrating a method of manufacturing a touch screen panel according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings. However, the techniques disclosed in the present invention are not limited to the embodiments described herein but may be embodied in other forms. It should be understood, however, that the embodiments disclosed herein are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. In the drawings, the width, thickness, and the like of the components are enlarged in order to clearly illustrate the components of each device. In addition, although only a part of the components is shown for convenience of explanation, those skilled in the art will be able to easily grasp the rest of the components. When an element is described as being at the point of view of the entirety of the drawings and an element is referred to as being located above or below another element, it is to be understood that the element may be directly on or under another element, , And the criteria of "above" and "below" are based on the drawings. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention. In the drawings, the same reference numerals denote substantially the same elements.

Meanwhile, the meaning of the terms described in the present invention should be understood as follows. The terms "first" or "second" and the like are intended to distinguish one element from another and should not be limited by these terms. For example, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

Also, the singular " include " should be understood to include plural representations unless the context clearly dictates otherwise, and the terms "comprises," Parts or combinations thereof, and does not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

Further, in carrying out the method or the manufacturing method, the respective steps of the method may take place differently from the stated order unless clearly specified in the context. That is, each process may occur in the same order as described, may be performed substantially concurrently, or may be performed in the opposite order.

1 and 2 are a cross-sectional view and a plan view of a carrier substrate with a cell for a touch screen panel according to an embodiment of the present invention. 1 and 2, the carrier substrate according to the present invention includes a substrate 10; A first alignment key (12) formed on the substrate (10) to align the cell (20) for a touch screen panel on the substrate (10); A second alignment key (14) formed on the substrate (10) for aligning the substrate (10) when forming a pattern and a layer on the cell for the touch screen panel (20); And a vent hole (30) formed through the substrate (10) at a portion of the substrate (10) where the touch screen panel cell (20) is aligned.

As the substrate 10 used in the present invention, a substrate for a common carrier substrate can be used without limitation, and can include, for example, glass, metal, semiconductor, polymer, ceramic, and the like. Preferably, a glass substrate can be used. The thickness of the substrate 10 may be, for example, 0.3 to 5 mm, preferably 0.5 to 2 mm. It is possible to secure the reinforcing property of the cell (substrate) for the touch screen panel and the weight reduction of the carrier substrate to be transported within the above range.

The first alignment key 12 used in the present invention is for aligning the cell 20 for the touch screen panel by using a jig or the like on the base 10, May be formed in a region where the cell 20 for the touch screen panel is disposed. The first alignment key 12 may be formed according to a conventional alignment key forming method. For example, the first alignment key 12 may be formed by etching the surface of the substrate 10 to a predetermined size and depth, And may be formed by coating a matrix (BM). In addition, the shape of the first alignment key 12 may be, for example, a cross shape, but is not limited thereto.

In an exemplary embodiment, the touch screen panel cell 20 may be a cover glass substrate 22 having a decoration layer 24 formed on a bezel portion used in manufacturing a cell type window-integrated touch screen panel .

The cover glass substrate 22 may have a different size, composition, or the like depending on the use of the touch screen panel to be manufactured. The cover glass substrate 22 may include glass such as alumino silicate, soda lime, , And chemically reinforced glass may be used, but is not limited thereto.

In addition, the decoration layer 24 may be, for example, but is not limited to, a mixture of polyester, epoxy resin and a pigment for specific color rendering.

In an embodiment, a third alignment key 26 corresponding to the first alignment key 12 may be formed on the decoration layer 24. In this case, by aligning the third alignment key 26 with the first alignment key 12, the touch screen panel cell 20 can be aligned. The third alignment key 26 may be formed in the same manner as the first alignment key 12, but is not limited thereto.

The second alignment key 14 used in the present invention may be used to align a layer of a conductive layer, an insulating layer or the like formed on the cell 20 for the touch screen panel will be. Alignment of the layers can be performed by aligning the substrate 10 with the alignment cell 20 for the touch screen panel according to the manufacturing steps of each process using the second alignment key 14 . The second alignment key 14 may be formed in a region where the touch screen panel cell 20 is not formed and may be formed in the same manner as the first alignment key 12, Do not.

The vent hole 30 used in the present invention is formed by penetrating the substrate 10 at a portion of the substrate 10 on which the touch screen panel cell 20 is aligned. One or more, preferably one to five, layers may be formed on the substrate 10 to be aligned. The diameter of the vent hole 30 may be 0.5 to 5 mm, preferably 1 to 3 mm. Stable production can be achieved even when the process is carried out under vacuum and high temperature in the above range.

In an embodiment, the vent hole 30 may be opened or closed by a cap. For example, during a process in which a solvent is used, such as a photolithography process in a touch screen panel manufacturing process, the surface of the cell 20 for the touch screen panel may be protected from solvent by closing the vent hole 30 with the stopper . During the high-temperature vacuum deposition process, the vent hole 30 is opened to prevent the occurrence of a sealed space, thereby preventing shrinking and expansion due to the process. In addition, after manufacturing the touch screen panel, air may be injected into the vent hole 30 to separate the touch screen panel manufactured from the carrier substrate.

The cap may use any material capable of opening and closing the vent hole 30, but a material resistant to a high-temperature environment and a chemical solvent may be preferably used. For example, rubber coats or tapes may be used, but the present invention is not limited thereto.

The carrier substrate according to the present invention may further include an adhesive layer 40 formed on the base material 20 for attaching the cell 20 for the touch screen panel onto the base material 10.

The adhesive layer 40 may include a pre-cut adhesive film and a pad capable of attaching the touch screen panel cell 20 to the substrate 10, a printable ink, For example, a silicone-based adhesive layer which can be easily attached and separated can be used. The thickness of the adhesive layer 40 may be 10 to 1,000 mu m, preferably 20 to 300 mu m, but is not limited thereto.

In addition, the carrier substrate may be subjected to an easy slip coating treatment to facilitate separation of the cell 20 for the touch screen panel. The easy slip coating is a coating of a fluorine-based material or a silicon-based material and has a low surface tension to facilitate the separation of the carrier substrate.

3 is a process diagram illustrating a method of manufacturing a touch screen panel according to an embodiment of the present invention. 3, the method of manufacturing a touch screen panel according to the present invention includes aligning and attaching a cell 20 for a touch screen panel using the first align key 12 of the carrier substrate on the carrier substrate, (Step S1); Aligning the base material 10 of the carrier substrate with the second alignment key 14 of the carrier substrate and forming a first circuit layer 50 on the touch screen panel cell 20 in step S2; Aligning the substrate 10 with the second alignment key 14 and laminating the insulation layer 60 on the first circuit layer 50 (step S3); Aligning the substrate 10 with the second alignment key 14 and forming a second circuit layer 70 on the insulation layer 60 (step S4); And separating the carrier substrate (step S5).

The alignment of the cell 20 for the touch screen panel may be performed by aligning a third alignment key 26 formed in the decoration layer 24 of the cell 20 for the touch screen panel with the first alignment key 12 ). ≪ / RTI > The alignment method by such an alignment key can be easily performed by those skilled in the art.

In an embodiment, the first and second circuit layers 50 and 70 may be circuit layers of a conventional touch screen panel, for example, after a transparent conductive layer is deposited, a metal conductive layer may be formed on the transparent conductive layer Can be manufactured.

As the transparent conductive layer, a conventional transparent conductive layer may be used. For example, an ITO (indium tin oxide), an ATO (antimony tin oxide), a fluorine-containing tin oxide (FTO, fluorine but are not limited to, doped tin oxide (ZTO), zinc tin oxide (ZTO), conductive polymers, carbon nanotubes (CNTs), graphene, . The transparent conductive layer may be formed by a chemical vapor deposition method, a vacuum deposition method, a plasma deposition method, or a sputtering method.

The metal conductive layer may be a conventional metal conductive layer, and may include, for example, palladium, platinum, aluminum, silver, copper, gold, nickel, tin, indium oxide, cobalt, But is not limited thereto. The metal conductive layer may be formed by photolithography or printing. At this time, the surface of the cell 20 for the touch screen panel may be protected from the solvent by closing the vent hole 30 with the stopper during the process of using the solvent like the photolithography process. The formation of the first and second circuit layers 50 and 70 can be easily performed by those skilled in the art.

In an embodiment, the insulating layer 60 may be an insulating layer of a conventional touch screen panel, and may include, for example, a thermosetting resin capable of spin coating or printing, a UV curing resin, a catalyst curing resin, But is not limited thereto. Specifically, an acrylic type, an epoxy type, a urethane type or an ethylene type thermosetting resin may be included. The formation of the insulating layer 60 can be easily performed by those skilled in the art.

In a specific example, the separation of the carrier substrate may be performed by injecting air into the vent hole 30 of the carrier substrate, using a knife edge, or using xylene or toluene capable of weakening or dissolving the adhesion of the adhesive layer The cover glass substrate 22 is separated from the base material 10 or the adhesive layer 40 of the carrier substrate or an adhesive layer 40 is attached to the cover glass substrate 22 by using an organic solvent such as alcohol And separating the manufactured touch screen panel from the substrate 10 of the carrier substrate. In addition, if necessary, an easy slip coating process may be performed on the substrate 10 in order to facilitate separation of the touch screen panel cell 20 from the carrier substrate. The easy slip coating is a coating of a fluorine-based material or a silicon-based material and has a low surface tension to facilitate the separation of the carrier substrate.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as set forth in the following claims It can be understood that

Claims (17)

A plate-shaped substrate;
A first alignment key formed on the substrate to align the cell for the touch screen panel on the substrate;
A second alignment key formed on the substrate for aligning the substrate upon formation of a pattern and a layer for manufacturing a touch screen panel on the cell for the touch screen panel; And
And a vent hole formed through the base material on a substrate portion in which the cell for the touch screen panel is aligned,
Wherein the vent hole has a diameter of 0.5 to 5 mm, and the vent hole is opened and closed by a cap.
The carrier substrate of claim 1, wherein the touch screen panel cell is a cover glass substrate having a decoration layer formed on a bezel portion.
The carrier substrate according to claim 2, wherein the decoration layer includes a third alignment key corresponding to the first alignment key.
The carrier substrate according to claim 1, wherein the thickness of the substrate is 0.3 to 5 mm.
delete delete The carrier substrate according to claim 1, wherein the carrier substrate further comprises an adhesive layer on the substrate.
The carrier substrate according to claim 7, wherein the adhesive layer is a silicone-based adhesive layer.
The carrier substrate of claim 1, wherein the substrate is easy slip coated.
The carrier substrate according to claim 9, wherein the easy slip coating is performed by coating a fluorine-based material or a silicon-based material.
Aligning and attaching a cell for a touch screen panel using a first alignment key of the carrier substrate on a carrier substrate;
Aligning a substrate of the carrier substrate with a second alignment key of the carrier substrate and forming a first circuit layer on the cell for the touch screen panel;
Aligning the substrate with the second alignment key and laminating an insulation layer over the first circuit layer;
Aligning the substrate with the second alignment key and forming a second circuit layer over the insulation layer; And
And separating the carrier substrate from the carrier substrate.
12. The touch screen panel manufacturing method according to claim 11, wherein the alignment of the cells for the touch screen panel aligns a third alignment key formed on the decoration layer of the cell for the touch screen panel to the first alignment key .
12. The method of claim 11, wherein the first and second circuit layers are formed by depositing a transparent conductive layer and then forming a metal conductive layer on the transparent conductive layer.
14. The method of claim 13, wherein when forming the metal conductive layer, the vent hole of the carrier substrate is sealed or opened by a cap according to a metal conductive layer forming method.
[12] The method of claim 11, wherein the carrier substrate is separated by injecting air into the vent hole of the carrier substrate, or by using a knife edge or an organic solvent.
12. The method of claim 11, wherein the carrier substrate is easily slip coated.
17. The method of claim 16, wherein the easy slip coating is performed by coating a fluorine-based material or a silicon-based material.

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