KR20100033237A - Sheet member bonding apparatus and method - Google Patents

Abstract

PURPOSE: A sheet material bonding apparatus and method are provided to produce a reliable touch panel by bonding first and second material with a uniform gap therebetween. CONSTITUTION: A sheet material bonding method comprises the steps of: positioning a first material by a setting pin on the mounting part of a roller and securing the first material in place by vacuum suction(S10), positioning a second material on the mounting part of a movable plate and securing the second material in place by vacuum suction(S20), advancing the movable plate and locating it directly below the roller so that the first and the second material keep a uniform gap therebetween(S30), and bonding the first and the second material by rotating the roller while advancing the movable plate(S40).

Description

Material attachment device and method {SHEET MEMBER BONDING APPARATUS AND METHOD}

The present invention relates to a material attachment, and relates to a material attachment device and method capable of precisely attaching the first material and the second material by always maintaining a constant gap between the first material and the second material.

In general, a liquid crystal display device includes a liquid crystal panel in which liquid crystal is injected between two display panels, a backlight assembly including a light source and a light guide plate for supplying a constant backlight to the liquid crystal panel, and an image signal input from an external device. It is a display device to display.

In such a liquid crystal display, a digitizer for displaying an image and inputting an electric graphic signal on a displayed screen is mounted. Such a device is called an EGIP (Electric Graphic Input Panel) or a touch screen panel (TSP). .

The touch screen panel is a peripheral device installed on the display surface of the liquid crystal display device and presses the touch screen panel while the user views the liquid crystal display device to input predetermined information into the computer. The voltage corresponding to the position where the stylus pen or finger is pressed is applied. Alternatively, a current signal is generated to input a command or graphic information specified by the user.

The principles of the touch screen panel are optical, ultrasonic, capacitive and resistive, depending on the application.They are not damaged even if they are used violently in public facilities such as stations and libraries. Thin and light resistive touch screen panels for light-resistant and portable terminals are widely used. Resistive touch screen panels are most commonly used in liquid crystal displays requiring small and thin films.

1 is an exploded perspective view schematically illustrating a general touch screen panel (TSP) and a window attached to the touch screen panel.

Referring to FIG. 1, a general touch screen panel 10 may include a lower substrate 1, an upper substrate 2 spaced apart from the lower substrate 1 by a predetermined distance, and the upper substrate 2 and the lower substrate ( It consists of a double-sided adhesive tape 3 which is located between 1) and attaches them to each other.

The ultraviolet curing agent 5 is applied to the upper surface of the touch screen panel 10 configured as described above, and the window 4 is attached thereto.

When the touch screen panel is energized with two conductive layers by pressing a desired point while the voltage is applied to two opposing conductive layers, the touch screen panel reads the voltage value changed by the resistance value at the contact point and then the controller changes the potential difference. It works by converting position coordinates accordingly.

The upper substrate and the lower substrate of the touch screen panel are made of a material having excellent light transmittance, heat resistance, chemical resistance, and mechanical strength.

The upper substrate of the touch screen panel may be a transparent film made of polyethylene terephthalate (PET) or the like, or a glass substrate or a plastic substrate.

The lower substrate of the touch screen panel may be a transparent film or a glass substrate of the same material as the upper substrate, or polymethylmethacrylate, polyamide, polyimide, polypropylene, and polyurethane. It may be a plastic substrate made of).

The first electrode is formed as a conductive layer in the display area of the upper substrate of the touch screen panel, and the second electrode is formed on the surface of the lower substrate facing the first electrode.

The first electrode and the second electrode may include a transparent conductive material, for example, indium tin oxide (ITO) or indium zinc oxide (IZO).

The first electrode and the second electrode may be formed as a uniform thin film over the entire display area, and the first electrode and the second electrode may have a pattern patterned in a predetermined pattern, for example, a stripe type.

The first electrode of the upper substrate and the second electrode of the lower substrate should always maintain a constant cell gap in order for the touch screen panel to operate normally.

In attaching the upper substrate and the lower substrate using a double-sided adhesive tape, conventionally, a double-sided adhesive tape is placed on the upper surface of the lower substrate, the upper substrate is again placed on the upper surface of the adhesive tape, and then the upper substrate is pressed by the squeeze. Method was used.

However, in the conventional method of attaching the upper substrate and the lower substrate by using a squeeze, a constant cell gap between the upper substrate and the lower substrate is not maintained and the touch screen panel is malfunctioned, or the image is stained or watermarked. There is a problem that the image quality is remarkably deteriorated, such as a mark).

In addition, to protect the panel on the front of the touch screen panel and to attach a window printed with necessary characters or patterns, a window made of a material such as transparent plastic is attached to the touch screen panel. A method of attaching a touch screen panel and a window by applying a curable solvent (UV solvent) to a touch screen panel or a window surface and then curing it is used.

As described above, in the conventional method of attaching a window using an ultraviolet curable solvent, after applying an ultraviolet curable solvent between the touch screen panel and the window, the touch screen panel and the window are pressed using a squeeze, and the touch screen panel and the window are pressed. After that, ultraviolet rays are irradiated to cure the ultraviolet curable solvent.

However, the conventional method uses a squeeze to squeeze the touch screen panel and the window, so it is difficult to control the pressure of the touch screen panel and the window, which causes the UV-curable solvent to stick out of the touch screen panel and the window and harden. have. When pressure is applied when pressing the touch screen panel and the window in this way, the UV-curable solvent hardens out of the space between the touch screen panel and the window, resulting in product defects, or the portion hardened out of the space between the touch screen panel and the window. Since a post-process for removing is required, it is a cause of lowering productivity.

The present invention is to solve the above problems, by advancing the movable plate on which the second material is seated by the position set toward the rotating roller on which the first material is seated, so that the first material and the second material are always a constant gap (or By maintaining the cell gap), it is possible to produce a malfunction-free and reliable touch panel. Also, the UV-curable solvent applied between the touch panel and the window does not stick out, and the attaching process is rapid to increase productivity. It is an object of the present invention to provide a material attachment apparatus and method.

In order to solve the above object, the apparatus for attaching a material according to the present invention comprises: a base plate; The base plate is rotatably installed on one side of the base plate by a support bracket, and a seating portion on which a first material is seated is formed on an outer circumference thereof, and a plurality of vacuum holes are formed on the seating portion to adsorb the first material. Rotating rollers; A rotating roller driving motor for rotating the rotating roller; A fixing plate fixedly installed on the other side of the upper surface of the base plate at a predetermined distance from the rotating roller and extending to a lower side of the rotating roller; A movable plate mounted on the fixing plate so as to be movable and having a second material attached to the first material on an upper surface thereof; A conveying screw installed on an upper portion of the movable plate to convey the movable plate to a lower portion of the rotary roller; And a transfer screw drive motor installed on the fixed plate to reversely rotate the transfer screw.

A seating portion into which the first material is inserted is formed on an outer circumferential surface of the rotating roller, and a setting pin is installed inside the rotating roller to set a position of the first material seated on the seating portion.

A guide part is installed between the fixed plate and the movable plate to guide the movement of the movable plate.

A plurality of vacuum holes are formed in the movable plate to adsorb the second material.

On the other hand, the method of attaching the material according to the present invention comprises the steps of fixing the first material in the seating portion of the rotary roller by using a setting pin, the vacuum suction through the vacuum hole to fix the first material; Fixing the second material to the seating portion of the movable plate by vacuum suction through the vacuum hole; Advancing the movable plate and positioned directly below the rotary roller to maintain the first material and the second material at a constant distance; And adhering the first material and the second material to each other by rotating the rotary roller while advancing the movable plate.

In the step of advancing the movable plate and positioned directly below the rotary roller, a drive motor rotates the transfer screw, and the movable plate advances directly below the rotary roller along the guide portion by the rotation of the transfer screw. Thus, the first material and the second material is maintained at a predetermined interval.

In the step of attaching the first material and the second material to each other, the vacuum of the vacuum hole of the rotary roller corresponding to the attachment position is sequentially released at the moment when the first material and the second material is attached to each other.

As described above, according to the present invention, the movable plate on which the second material is seated is advanced by the position set toward the rotary roller on which the first material is seated, so that the first material and the second material are always constant gaps (or cells). By bonding in the state of maintaining the gap), it is possible to produce a touch panel with no malfunction and a high reliability, and also to solve the conventional problems caused by the ultraviolet curable solvent.

In addition, since the attachment of the material proceeds by line contact between the rotary roller and the movable plate, the attachment process can be quickly and increased in productivity.

Hereinafter, an apparatus and a method for attaching a substrate according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

2 is a front view showing a material attachment device according to a preferred embodiment of the present invention, Figure 3 is a view showing the material attachment device of Figure 2, a view illustrating a state in which the first material and the second material maintained a constant gap. 4 is a view illustrating a material attachment device of FIG. 2, illustrating a method of attaching the first material and the second material to each other by driving a rotating roller and a movable plate, and FIG. 5 is a view illustrating the material attachment device of FIG. 2. It is a left side view, and FIG. 6 is a top view which shows the raw material attachment apparatus of FIG.

2 to 6, the material attachment device according to the present invention includes a base plate 110; The base plate 110 is rotatably installed on one side of the base plate 110 by a support bracket 121, and a seating portion 123 is formed on an outer circumferential surface thereof, and a seating portion 123 is formed on an outer circumferential surface thereof. A rotating roller 120 in which a plurality of vacuum holes 122 for adsorbing one material are formed; A rotary roller drive motor 127 for rotating the rotary roller 120; A fixing plate 130 fixedly installed at the other side of the upper surface of the base plate 110 at a predetermined distance from the rotating roller 120 and extending to a lower side of the rotating roller 120; A movable plate 140 installed on the fixing plate 130 so as to be movable and having a second material attached to the first material on an upper surface thereof; A transfer screw 150 installed on an upper portion of the movable plate 140 to transfer the movable plate 140 to the lower portion of the rotary roller 120; It includes a drive motor 160 is installed on the fixed plate 130 to rotate the transfer screw 150 forward and backward.

Referring to the configuration of the material attachment device 100 according to a preferred embodiment of the present invention in more detail.

The base plate 110 is fixed to the ground, and the rotating roller 120 is rotatably installed on one side of the upper surface of the base plate 110 by a support bracket 121.

The rotating roller 120 has a seating portion 123 on which a first material is seated on its outer circumferential surface, and a plurality of vacuum holes (S) for adsorbing the first material 30 to the seating portion 123. 122) is formed.

Air (air) is sucked through the vacuum hole 122 to adsorb and fix the first material 30 seated on the seating portion 123 so that the first material 30 does not move during the material attachment process.

The setting pin 124 installed inside the rotary roller 120 is for setting the position of the first material 30 seated on the seating portion 123 immediately before vacuum adsorption. It may be inserted into the insertion hole (not shown) of the first material (30).

When the setting pin 124 is inserted into the insertion hole (not shown) of the first material 30, the first material 30 does not move arbitrarily and the position of the first material 30 is set.

The rotary roller drive motor 127 is supported by the support bracket 128 to rotate the rotary roller 120, the support bracket 128 is fixed to the base plate 110.

The fixed plate 130 is installed to move the movable plate 140, and is formed to extend downward of the rotary roller 120 at a predetermined distance from the rotary roller 120.

The movable plate 140 is installed in the upper portion of the fixing plate 130 to be moved in the front-rear direction.

In order to move the movable plate 140 in the front-rear direction on the fixing plate 130, a transfer screw 150 or another configuration that performs the same function may be adopted.

The transfer screw 150 is formed to extend to the lower portion of the rotating roller 120 in the front and rear direction on the fixing plate 130, it may be composed of one as shown in the drawing or not shown in the drawing design conditions In some cases, it can also be changed into a plurality.

The transfer screw 150 is connected to a drive motor 160 for driving the transfer screw 150 precisely, for example, a servo motor.

A guide unit 170 is installed between the fixed plate 130 and the movable plate 140 to guide the movement of the movable plate 140.

The movable plate 140 is a place where the second material 40 is seated, and a plurality of vacuum holes 141 are formed so as not to move arbitrarily during the material attaching process, that is, to adsorb the second material 40. It is preferable to be.

Looking at the operation of the material attachment device according to a preferred embodiment of the present invention configured as described above are as follows.

Prior to describing the operation of the material attachment device 100 of the present invention, the attachment process of the touch screen panel and the window will be described. First, in order to manufacture the touch screen panel, a double-sided adhesive tape is attached to the lower substrate (or the upper substrate). shall.

Then, another substrate is attached to the substrate on which the double-sided adhesive tape is attached to manufacture a touch screen panel. Here, the double-sided adhesive tape is a release paper is located on both sides, the operator removes the release paper and attach a lower substrate (or upper substrate) to the portion.

The UV curable solvent is applied to and combined with the touch screen panel or the window manufactured by the above method, and the ultraviolet rays are irradiated thereto to attach the touch screen panel and the window.

The first material and the second material mentioned below may be an upper substrate, a lower substrate, and a double-sided adhesive tape, respectively, or may be a touch screen panel and a window.

Here, when it is assumed that the upper substrate and the lower substrate as the first material and the second material, respectively, it will be described on the assumption that the double-sided adhesive tape is attached to the lower substrate in the same process. In the same manner, assuming that the touch screen panel and the window are the first material and the second material, respectively, the upper surface of the touch sprin panel is assumed to be coated with an ultraviolet curable solvent.

Hereinafter, an apparatus and a process for attaching the first material and the second material will be described.

Referring to FIG. 2, first, the first material 30 is seated in the seating part 123 of the rotary roller 120.

At this time, the end of the setting pin 124 is elevated to be inserted into the insertion hole (not shown) of the second material 30 to set the attachment position of the first material (30).

And the vacuum suction through the vacuum hole 122 to fix the first material (30).

In the same way, the second material 40 is seated on the upper surface of the movable plate 140 and vacuum-sucked through the vacuum hole 141 to suck and fix the second material 40.

Immediately after or simultaneously with the first material 30 being sucked and fixed by the vacuum hole 122, the setting pin 124 is lowered to its original position.

Next, referring to FIG. 3, the transfer screw drive motor 160 is driven to advance the movable plate 140, and at the same time, the rotary roller drive motor 127 is driven to rotate the rotary roller 120 at a predetermined angle. .

The guide unit 170 serves to facilitate the movement of the movable plate 140.

By precisely controlling the transfer screw drive motor 160 to move the movable plate 140 to a preset position, that is, a setting position, the first material 30 and the second material 40 maintain a constant gap or cell gap. Do it.

Here, the setting position is a theoretical value as well as a data value obtained by repeated experiments at the work site for attaching the material, and the data value is determined depending on which material is used for the first material 30 and the second material 40, respectively. And the setting position therefor is measured and set in advance before the material attachment process.

Next, referring to FIG. 4, as described above, the transfer screw driving motor 160 is driven based on the data value for the preset setting position, thereby further moving the movable plate 140 and simultaneously rotating roller driving motor. 127 is driven to rotate the rotating roller 120 at a predetermined angle to attach the first material 30 and the second material 40.

In this case, since the first material 30 and the second material 40 are attached by line contact between the rotary roller 120 and the movable plate 140, the attaching process may be rapidly performed, and productivity may be greatly increased.

In addition, when the vacuum of the vacuum holes 122 and 141 corresponding to the attachment position is sequentially released when the first material 30 and the second material 40 are attached to each other, the first material 30 ) And the second material 40 are attached to each other, the completed first / second material 30, 40 is placed on the upper surface of the movable plate 140, this finished product is another transfer means (Not shown), for example, moved to another place by a transport robot.

Then, the transfer screw drive motor 160 and the rotary roller drive motor 127 are driven in the reverse direction to return the movable plate 140 and the rotary roller 120 to their original positions, and wait for the next attachment process.

As described above, in the material attachment device 100 of the present invention, the movable plate 140 on which the second material 40 is seated is set toward the rotating roller 120 on which the first material 30 is seated. By advancing as much as possible, the first material 30 and the second material 40 are adhered in a state of maintaining a constant gap (or cell gap) at all times, whereby a malfunction-free and reliable touch panel can be obtained. The conventional problem caused by the swelling of the curable solvent is also eliminated.

In addition, since the first and second materials 30 and 40 are attached by line contact between the rotary roller 120 and the movable plate 140, the attaching process may be quick and significantly increase productivity.

On the other hand, Figure 7 is a flow chart showing a material attachment method according to a preferred embodiment of the present invention.

Referring to Figure 7, when described in detail step by step the material attachment method according to an embodiment of the present invention.

Referring to FIG. 7, in the method of attaching a material according to a preferred embodiment of the present invention, a first material is fixed to a seating part of a rotating roller using a setting pin, and the first material is fixed by vacuum suction through a vacuum hole. Step S10; Fixing the second material to a seating portion of the movable plate by vacuum suction through a vacuum hole (S20); Advancing the movable plate and positioned directly below the rotary roller to maintain the first material and the second material at a predetermined interval (S30); And adhering the first material and the second material to each other by rotating the rotary roller while advancing the movable plate (S40).

In the step S30, the drive motor rotates the transfer screw, and the movable plate is advanced directly below the rotary roller along the guide portion by the rotation of the transfer screw, so that the first material and the second material have a predetermined interval. Will be maintained.

In the step S40, the vacuum of the vacuum hole of the rotary roller corresponding to the attachment position is sequentially released when the first material and the second material are attached to each other.

As described above, the present invention has been described with reference to preferred embodiments and the accompanying drawings, but different embodiments may be configured within the spirit and scope of the present invention. For example, although the technique of the present invention describes a process of attaching the first material and the second material as an example, the first material and the second material mentioned herein do not limit a specific product, and thus the same substrate. Of course, the technology of the present invention can be applied to the adhesion between the substrate, the film, the sheet as well as the film, sheet.

Accordingly, the scope of the invention is defined by the appended claims, and should be construed as not limited by the specific embodiments described herein.

1 is an exploded perspective view schematically illustrating a general resistive touch panel.

2 is a front view showing a material attachment device according to a preferred embodiment of the present invention.

3 is a view illustrating the apparatus for attaching a workpiece of FIG. 2, illustrating a state in which the first material and the second material maintain a constant gap.

4 is a view showing the material attaching device of FIG. 2, in which the first material and the second material are attached to each other by driving the rotating roller and the movable plate.

5 is a left side view of the material attaching apparatus of FIG. 2.

FIG. 6 is a plan view illustrating a material attaching device of FIG. 2.

7 is a flow chart showing a material attachment method according to a preferred embodiment of the present invention.

* Drawing reference for the main part *

100: material attachment device

110: base plate

120: rolling roller

121: support bracket

122: vacuum hole

123: seating part

124: setting pin

127: rotary roller drive motor

130: fixed plate

140: movable plate

141: vacuum hole

150: transfer screw

160: feed screw drive motor

170: guide part

Claims (7)

Base plate 110; The base plate 110 is rotatably installed on one side of the base plate 110 by a support bracket 121, and a seating portion 123 is formed on an outer circumferential surface thereof, and a seating portion 123 is formed on an outer circumferential surface thereof. A rotating roller 120 in which a plurality of vacuum holes 122 for adsorbing one material are formed; A rotary roller drive motor 127 for rotating the rotary roller 120; A fixing plate 130 fixedly installed at the other side of the upper surface of the base plate 110 at a predetermined distance from the rotating roller 120 and extending to a lower side of the rotating roller 120; A movable plate 140 installed on the fixing plate 130 so as to be movable and having a second material attached to the first material on an upper surface thereof; A transfer screw 150 coupled to the movable plate 140 so as to transfer the movable plate 140 to the lower portion of the rotary roller 120; And a conveying screw drive motor (160) installed on the fixing plate (130) so that the conveying screw (150) can be rotated forward and backward. The method of claim 1, A seating portion 123 into which the first material is inserted is formed on an outer circumferential surface of the rotating roller 120, and the rotating roller 120 is set to set a position of the first material seated on the seating portion 123. Inside) material attachment device, characterized in that the setting pin 124 is installed. The method of claim 1, Material attachment device, characterized in that the guide portion 170 is installed between the fixed plate 130 and the movable plate 140 to guide the movement of the movable plate (140). The method of claim 1, The movable plate 140 is a material attachment device, characterized in that a plurality of vacuum holes are formed to adsorb the second material. Fixing a first material to a seating part of a rotating roller by using a setting pin, and sucking the vacuum through a vacuum hole to fix the first material (S10); Fixing the second material to a seating portion of the movable plate by vacuum suction through a vacuum hole (S20); Advancing the movable plate and positioned directly below the rotary roller to maintain the first material and the second material at a predetermined interval (S30); And Attaching the first material and the second material to each other by rotating the rotary roller while advancing the movable plate (S40). The method of claim 5, In the step S30, the drive motor rotates the transfer screw, and the movable plate is advanced directly below the rotary roller along the guide portion by the rotation of the transfer screw, so that the first material and the second material have a predetermined interval. Method of attaching the material, characterized in that maintained. The method of claim 5, In step S40 And the vacuum of the vacuum hole of the rotary roller corresponding to the attachment position is sequentially released when the first material and the second material are attached to each other.

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