KR101133333B1 - Device for sticking functional film and method for sticking functional film - Google Patents

Abstract

Transparent with transparent adhesive sheet with respect to the movable base 21 comprised so that the tray-shaped component 1 which has a transparent part, and can move to substantially horizontal direction, and the tray-shaped component 1 positioned on the movable stage The transparent functional film positioning mechanism which positions a functional film so that the transparent adhesive sheet opposes a transparent part, and the attachment mechanism which attaches a transparent functional film to the transparent part of the tray-shaped part 1, The said attachment mechanism is a A guide standing upright in a substantially vertical direction, a movable frame 13 that moves up and down along the guide, a flow shaft 20b that is provided below the movable frame and flows around a horizontal axis in a direction orthogonal to the moving direction of the moving table; And an elastic pressing portion 20c formed in a convex shape in the circumferential direction thereof along the outer circumferential surface of the flow shaft, wherein the elastic pressing portion has its transparent shape in the transparent function. It is a functional film attachment device comprised so that it may correspond to the planar shape of the attachment range of a film.

Description

DEVICE FOR STICKING FUNCTIONAL FILM AND METHOD FOR STICKING FUNCTIONAL FILM}

The present invention relates to a functional film attaching device and a functional film attaching method suitable for attaching a transparent functional film to an inner surface of a transparent housing constituting a display portion of a small electronic device and integrating the transparent housing.

Conventionally, a transparent touch panel is superimposed on a display screen such as a liquid crystal display, and an input function capable of directly selecting a desired function by touching an icon or the like displayed on the display screen with a finger through the transparent touch panel is provided. One display device is used. As described in Japanese Patent Application Laid-Open No. 2003-511799, a resistive film method, a capacitive coupling method, and the like are known as the transparent touch panel.

The capacitive coupling type transparent touch panel has a plurality of X electrodes and a plurality of Y electrodes arranged in a lattice shape, the operation principle of which is that two electrodes form a stable electric field at the time of non-operation, and the fingers are close to each other. The electric field is thereby changed, and position detection is performed by detecting a change in the capacitance value.

This kind of transparent touch panel is basically a multilayer structure consisting of a transparent substrate, a conductive film, and an antifouling film, and since it has no air layer between layers and no moving parts, it adheres compactly to the inner surface of the transparent housing constituting the display unit. There is an advantage that the liquid crystal display can be clearly seen through the transparent touch panel.

By using such a transparent touch panel, a handwriting input function is added to a mobile phone which tends to be thin and slim, or a display unit such as a portable game machine, a PDA (personal digital assistant), a digital camera, a video camera, etc. can be used in addition to the mobile phone. Coordinate input function can be added.

As the transparent substrate, it is practical to use a plastic film having flexibility that can be deformed into various shapes. When the plastic film type transparent touch panel is mounted on, for example, a housing inner surface of a mobile phone, Usually, a transparent touch panel and a housing are bonded together using a transparent adhesive sheet.

However, since most of the housings of the mobile phone to which the transparent touch panel is to be attached are formed of tray-shaped parts with sidewalls standing around them, in order to attach the transparent touch panel to the inner surface of the slimmed housing, it is necessary to extend to the front of the housing sidewall. It is necessary to arrange the transparent touch panel and to reliably bond the transparent touch panel positioned immediately in front of the side wall to the housing.

The attachment operation for reliably attaching the transparent touch panel positioned immediately before the side wall to the inner surface of the housing is not easy, so that bubbles are often mixed between the transparent touch panel and the inner surface of the housing, and positioning accuracy between the two cannot be secured. There was a problem that it lowered.

In addition, the same problem occurs even when the so-called functional film and the tray-shaped component in which an antenna pattern and a circuit are formed on the plastic film are not limited to the bonding between the transparent touch panel and the housing, for example.

Furthermore, after being supplied from a long roll-shaped thing and the pattern of the to-be-transferred body and the transfer material is matched, the heating roll heated to about 200 ° C. is heated and pressed while rotating on the transfer material, and the adhesive layer of the transfer material. Although a transfer apparatus (e.g., Japanese Patent Application Laid-open No. Hei 2-147339) which fuses a to a transfer material is known from the prior art, this kind of transfer apparatus does not bond transparent materials to each other, and is also the lowest layer in the transfer layer. Since the phosphorus adhesive layer is fused to the transfer object by heating and pressurizing the heating roll, both of them are not adhered by simply laminating the transfer material on the transfer object, so that mixing of bubbles does not become a problem. .

On the other hand, when attaching a transparent touch panel to the transparent part of a tray-shaped part, since the transparent touch panel with a transparent adhesive sheet which has the surface adhesiveness is laminated | stacked on the transparent part of a tray-shaped part, microbubbles are mixed between them. It is easy to be mixed, and the bubble mixed will produce a color nonuniformity in a display part, and will become a defect.

This invention is made | formed in view of the problem at the time of attaching the conventional transparent touch panel as mentioned above, and a functional film attachment apparatus and a functional film which can bond a functional film and a tray-shaped component reliably in an accurate position, without mixing a bubble. It is to provide an attachment method.

The present invention relates to a movable table configured to position a tray-shaped component having a transparent portion and to move in a substantially horizontal direction, and a transparent functional film with a transparent adhesive sheet to the tray-shaped component positioned on the movable table. A transparent functional film positioning mechanism for positioning the transparent adhesive sheet so as to face the transparent portion, and an attachment mechanism for attaching the transparent functional film to the transparent portion of the tray-shaped part,

The attachment mechanism is provided with a guide standing upright in a substantially vertical direction, a movable frame which moves up and down along the guide, and is provided below the movable frame and flows around a horizontal axis in a direction orthogonal to the moving direction of the movable table. And an elastic pressing portion formed in a convex shape in the circumferential direction thereof along the outer circumferential surface of the flow shaft, wherein the elastic pressing portion is configured such that its developed shape coincides with the planar shape of the attachment range of the transparent functional film. It is a function film attachment device.

According to the functional film attachment device of the present invention, there is an advantage that the transparent functional film can be attached to the transparent portion of the tray part without mixing bubbles.

The transparent functional film applied to the apparatus for attaching a functional film of the present invention may be constituted by a transparent touch panel.

Moreover, the said transparent functional film contains the transparent flexible film which gave various functions according to a use, such as electroconductivity, insulation, environmental resistance, etc., In addition to the said transparent touch panel, transparent antenna, transparent wiring, etc. are illustrated.

In the functional film attachment device of the present invention, provided with a drive unit for elevating the movable frame, and a spring mechanism is provided between the drive unit and the movable frame, the elastic pressing may be performed even if the tray-shaped component is formed of a curved surface. Since the part can follow the curved surface via the spring mechanism, the transparent functional film can be securely attached.

In the apparatus for attaching a functional film of the present invention, when the movable platform is provided to move the movable table in a direction orthogonal to the flow axis, the transparent functional film can be stably attached to the tray-shaped component.

In the apparatus for attaching the functional film of the present invention, in the case where the surface of the transparent functional film attaching side in the transparent portion has a convex portion, if a concave portion is formed on the pressing surface of the elastic pressing portion to avoid interference with the convex portion, It becomes possible to affix a transparent function film, avoiding the said convex part.

Moreover, this invention arranges the tray-shaped component which has a transparent part on the movable base which can move in a substantially horizontal direction, and makes the transparent functional film with a transparent adhesive sheet oppose the said transparent part, An elastic pressing portion positioned on the tray-shaped part and rotatable about a horizontal axis in a direction orthogonal to the moving direction of the movable table, the elastic pressing portion configured to coincide with the planar shape of the attachment range of the transparent functional film; By pressing to one side of the moving table moving direction in the transparent functional film and moving the moving table, the elastic pressing unit is rotated in a state where the transparent functional film is sandwiched between the transparent functional film and the tray-shaped component It is a function film sticking method of sticking to the transparent part of the.

1 is a perspective view of a transparent touch panel and a housing attached by a functional film attachment device according to the present invention.
It is a side view which has some notch of the function film attachment apparatus which concerns on this invention.
3 is an explanatory view of the operation of the pressing roller shown in FIG. 2.
It is a front view of the functional film attachment device which concerns on this invention.
It is a perspective view which shows the attachment object which can be attached by the functional film attachment device of this invention.
It is a perspective view which shows the other attachment object which can be attached by the functional film attachment device of this invention.
It is a perspective view which shows the other attachment object which can be attached by the functional film attachment device of this invention.

EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated in detail based on embodiment shown in drawing.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 shows a transparent touch panel as a functional film attached by a functional film attaching apparatus according to the present invention and a housing as a tray-shaped component.

In Fig. 1, the housing 1 is a component constituting the display unit of the mobile phone. The transparent touch panel attachment range (hereinafter, abbreviated as attachment range) S surrounded by the broken line has a central portion transparent. The outer side of the center portion and the outer side of the attachment range S are decorated in a window frame shape by, for example, in-mold molding, so as to conceal circuits, components, and the like installed inside the housing.

In addition, in the figure, the code | symbol S 'has shown the attachment surface shape (in this embodiment, rectangular planar shape).

Side walls 1a to 1d are erected around the housing 1, and in the drawing, the upper side is the inner surface side of the mobile telephone, and the lower side is the outer surface side.

The transparent touch panel 2 has a three-layer structure in which an antifouling film is further laminated on a film with a transparent electrode on which a transparent conductive film is formed on a flexible transparent plastic film (transparent substrate). The total thickness of the transparent touch panel 2 used in embodiment is 0.05-1 mm.

The transparent touch panel 2 is attached to the inner surface of the housing 1, and when a finger is touched from the outside of the housing 1, a capacitance is formed at the touched position, and a weak current flows, and the change is made. By detecting the minute, the coordinates of the touched position can be detected.

The structure of the function film attachment apparatus used for attachment of the said transparent touch panel 2 is demonstrated, referring FIGS.

2 shows a side view of the functional film attaching device 3.

The functional film attachment device 3 has a pedestal 5 provided on the table 4, and on this pedestal 5, support pillars (guides) 6 to 9 (support pillars 6 and the front side). 8) Only four cities are installed. In addition, the support pillars 6-9 are arrange | positioned at each corner part of a rectangle by planar view.

A fixed table 10 arranged in the horizontal direction is fixed to the upper ends of these support pillars 6 to 9, and the main body 11a of the electric cylinder (drive part) 11 is approximately at the center of the fixed table 10. It is fixed downward.

An elevating table (moving frame) 13 is connected to the tip of the rod 11b of the electric cylinder 11 via a spring mechanism 12.

Each corner portion of the elevating table 13 is mounted in a state where the sleeves 14 to 17 penetrate, and these sleeves 14 to 17 can slide the support pillars 6 to 9 in the axial direction. As a result, the elevating table 13 is moved up and down in the Z direction with the supporting pillars 6 to 9 as guides.

In addition, the upward movement limit and the downward movement limit of the lifting table 13 are regulated by numerically controlling the electric cylinder 11. In addition, a lower limit is suitably adjusted according to the thickness of the function film which adheres, and the thickness of a housing | casing.

In addition, the spring mechanism 12 includes a plate 12a fixed to the distal end of the rod 11b and a shaft 12b including a head portion vertically lowered while passing through each corner portion of the plate 12a. The lower end of the shaft 12b with a head part is fixed to the lifting table 13, and a compression coil is provided between the plate 12a and the lifting table 13 in the shaft 12b with a head part. The spring 12c is attached.

In addition, a pair of arms 18 and 19 are vertically lowered from the lifting table 13, and below the arms 18 and 19, the pressing roller 20 is around the support shaft 20a as a horizontal axis. It is hypothesized to flow as

The press roller 20 includes a flow shaft 20b having a larger diameter than the support shaft 20a and an elastic press portion 20c formed in a convex shape along the outer circumferential surface of the flow shaft 20b.

3 shows a front view of the pressing roller 20.

In Fig. 3, the elastic pressing portion 20c of the pressing roller 20 is made of a urethane resin having a thickness of 10 mm, which is composed of Shore hardness 20 to 100, preferably 30 to 80, and the shaft of the flow shaft 20b. It is wound in a C shape at approximately the center of the direction.

Specifically, the elastic pressing portion 20c is wound over approximately three quarters of the outer circumference of the flow shaft 20b in the present embodiment, and thus the elastic pressing portion 20c is wound around the entire flow shaft 20b. By forming the notch part M in a part, without winding up in, the circumferential edge part 20d of the elastic pressing part 20c is immediately before the side wall part 1c of the movement direction (A direction) of the housing 1. The one end 2a of the transparent touch panel 2 stacked in close proximity to each other can be reliably pressed.

The winding length of the elastic pressing portion 20c is appropriately changed in accordance with the size of the attachment range S of the transparent touch panel 2 within a range not deviating from the C shape, and thus, the pressing roller 20 The support shaft 20a is comprised so that attachment and detachment with respect to the arms 18 and 19 are possible.

In addition, in response to the housing 1 moving in the direction of arrow A, the elastic pressing portion 20c of the pressure roller 20 rotates in the direction of arrow B while pressing the transparent touch panel 2, and finally the transparent touch panel. The other end 2b (refer FIG. 1) of (2) can be pressed.

In addition, in order to set the elastic pressing part 20c in the posture (the cutout part M is located in the position of 3 o'clock to 6 o'clock) in the initial position, it is for rotating the pressing roller 20. A press roller positioning motor (not shown) is provided.

In addition, in FIG. 3, the press operation of the press roller 20 is demonstrated in the state in which the housing 1 is stopped and the press roller 20 moves for convenience.

2 will be described again.

The housing 1 is adapted to be positioned at a pressing position by fitting into a recess provided in the housing mounting table (movable table which can move in a substantially horizontal direction), and the housing mounting table 21 is supported by a support leg 22. , 23 is supported, and the support leg 22 slides on the rail 24 provided on the pedestal 5, and the support leg 23 similarly slides on the rail 25 in the surface depth direction. It is supposed to be.

Between the rails 24 and 25, a uniaxial slide device (moving table drive section) 26 is provided.

4 shows a front view of the functional film attachment device.

In FIG. 4, the single-axis slide apparatus 26 rotates a ball screw by a pulse-controlled feed motor, and moves the movable body 27 to an X-axis direction with the rotation of the ball screw.

The movable body 27 is connected to the housing mounting table 21, and the housing 1 positioned on the housing mounting table 21 by adjusting the rotation speed by controlling the pulse signal supplied to the transfer motor. ) Can be moved to the desired position.

In addition, 28 and 29 are the sliders which slide on the rail 24 in the figure.

Next, operation | movement of the function film attachment device which has the said structure is demonstrated.

In addition, it is assumed that the housing mounting table 21 is waiting at the ready position C for loading the housing 1.

The housing 1 is fitted into the recessed portion provided in the housing mounting table 21 through a housing transfer robot (not shown), and is positioned. In this state, when the feed motor is driven, the housing mounting table 21 on which the housing 1 is mounted moves in the arrow D direction.

When the housing 1 moves to the press position by the press roller 20, the movement of the housing mounting stand 21 will stop.

Subsequently, the transparent touch panel 2 with a transparent adhesive sheet is positioned above the housing 1.

In addition, the transparent touch panel with a transparent adhesive sheet is positioned above the housing 1 using a conventionally well-known positioning mechanism (functional film positioning mechanism), for example, a multi-axis robot.

Specifically, in the vicinity of the functional film attachment device 3, a housing is provided with a supply stage for supplying the transparent touch panel 2, a multi-axis robot for conveying the transparent touch panel 2, and a housing 1. Housing robots for conveying to the base 21 are arranged, respectively.

The multi-axis robot has an arm rotatable about a horizontal axis, and is capable of moving the arm on the X, Y, and Z axes.

The transparent touch panel 2 is placed on the supply stage with the transparent adhesive sheet facing up. When the protective film of the transparent adhesive sheet is peeled off, the transparent touch panel 2 is moved by a conveyance pad provided at the tip of the arm. It is adsorbed and conveyed toward the said housing 1, and it rotates 180 degrees around a horizontal axis in the middle of the conveyance, ie, makes a transparent adhesive surface sheet face down, and is slightly on the attachment range S of the housing 1. Positioned with a gap.

On the other hand, on the pressing roller 20 side, the posture of the elastic pressing portion 20c is reset so that the transparent touch panel 2 can be pressed against the housing 1 from immediately before the side wall portion 1c of the housing 1 ( 3).

When the electric cylinder 11 is driven in this state, the rod 11b is lowered, and the circumferential end portion 20d of the elastic pressing portion 20c presses one end 2a of the transparent touch panel 2.

When the housing mounting table 21 is moved in the direction of arrow E by driving the feed motor, the elastic pressing part 20c is rotated in the direction of arrow F by the frictional force between the elastic pressing part 20c and the transparent touch panel 2. The transparent touch panel 2 and the housing 1 are bonded together while pushing out the bubbles existing between the transparent touch panel 2 and the housing 1.

Since the expanded shape of the elastic pressing portion 20c is configured to match the planar shape of the attachment range of the transparent touch panel 2 and does not press the circumference of the transparent touch panel 2 more than necessary, the transparent touch panel 2 ) And bubbles present between the housing 1 are easily released from the outer periphery of both.

When the pressure by the elastic pressing portion 20c reaches the other end of the transparent touch panel 2, the feed motor stops.

Subsequently, the electric cylinder 11 pulls up the rod 11b in the arrow G direction, whereby the elastic pressing portion 20c is separated from the transparent touch panel 2.

Subsequently, by driving the feed motor, the housing mounting table 21 is moved in the opposite direction to the arrow D direction to return to the standby position.

The functional film attachment process is completed by removing the housing 1 with the transparent touch panel 2 from the housing mounting base 21.

5 to 7 show attachment objects that can be attached by the functional film attachment device of the present invention.

5 shows a case where the functional film is attached to the inner surface of the housing of the mobile telephone.

Inside the housing 30 of the cellular phone, the functional film 31 is attached to the light colored region in the drawing.

As shown in Fig. 5, even if the surface to be attached is bent in one direction, according to the present invention, it is possible to attach the functional film 31, and even if the convex portion 30a is present in the middle of the surface, the elastic pressing If the concave portion is formed in the portion 20c so as not to interfere with the convex portion 30a, the functional film 31 can be attached to the surface having the convex portion.

FIG. 6 shows the case where the functional film 33 is attached to the inner surface of the housing 32 of the controller of the game machine.

The controller of the game machine may be molded into a curved shape so as to be familiar with the hand. Also for this attachment object, when the elastic pressing portion 20c is formed so that the developed view of the outer circumferential surface of the elastic pressing portion 20c becomes the same shape as the curved shape, the inner surface of the curved housing 32 also has a functional film ( 33) can be attached.

FIG. 7 illustrates a case in which the function film 35 is attached to the display unit 34 of the notebook.

When the functional film attachment device of the present invention is designed in a large attachment specification so that the functional film 35 can be attached to the size of the display unit 34, for example, 17 inches (43.18 cm), the size is limited. It becomes possible to affix a functional film without it.

In addition, in each of the above embodiments, a tray-shaped part having a flat or partially inclined surface is described as an example. However, when the functional film attachment device of the present invention is used, a functional film can be attached to a housing having a curved curved surface. have.

In the case of attaching the functional film to the housing in which the attaching surface is curved, the curved surface of the compression coil spring 12c of the spring mechanism 12 shown in FIG. 2 is expanded and contracted with the movement of the housing mounting table 21. It becomes possible to follow the press roller 20 to this.

Moreover, according to the functional film attachment apparatus of this invention, a curved surface can attach a functional film to the housing of up to 60R.

Claims (6)

A movable table configured to position a tray-shaped part having a transparent portion and to move in a horizontal direction,
A transparent functional film positioning mechanism for positioning the transparent functional film with a transparent adhesive sheet so that the transparent adhesive sheet faces the transparent portion with respect to the tray-shaped component positioned on the movable table;
It has an attachment mechanism which attaches the said transparent function film to the transparent part of the said tray-shaped component,
The attachment mechanism,
A guide standing upright in a vertical direction,
The movable frame for elevating along this guide,
A flow shaft disposed below the movable frame and flowing around a horizontal axis in a direction orthogonal to the moving direction of the movable table;
It is composed of an elastic pressing portion formed in a convex shape in the circumferential direction along the outer peripheral surface of the flow shaft,
The said elastic pressing part is comprised so that the expanded shape may correspond with the planar shape of the attachment range of the said transparent functional film, The functional film attachment device characterized by the above-mentioned. The apparatus according to claim 1, wherein the transparent functional film is a transparent touch panel. The functional film attachment device according to claim 1, further comprising a drive unit for elevating the movable frame, wherein a spring mechanism is provided between the drive unit and the movable frame. The apparatus for attaching a functional film according to claim 1, further comprising a moving table driving unit for moving the moving table in a direction orthogonal to the flow shaft. The apparatus for attaching a functional film according to claim 1, wherein a concave portion is formed on a surface of the transparent functional film attaching side in the transparent portion, and a concave portion is formed on a pressing surface of the elastic pressing portion to avoid interference with the convex portion. . Position the tray-shaped part having a transparent part on the movable table movable in a horizontal direction,
The transparent functional film with a transparent adhesive sheet is positioned on the said tray-shaped part so that the transparent adhesive sheet may oppose the said transparent part,
An elastic pressing portion which is rotatable about a horizontal axis in a direction orthogonal to the moving direction of the movable table and configured so that the developed shape coincides with the planar shape of the attachment range of the transparent functional film, moving the movable table in the transparent functional film I push it to one side of the direction,
By moving the said movable table, the elastic pressing part is rotated in the state which pinched | interposed the said transparent functional film, and the said transparent functional film is adhere | attached on the transparent part of the said tray-shaped component, The functional film attachment method characterized by the above-mentioned.

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