TWI494262B - Film peeling off method and film peeling off system - Google Patents

Description

Film peeling method and film peeling system

This embodiment relates to a film peeling method and system thereof, and more particularly to a method and system for removing a masking film or a protective film for a display panel.

The flat panel display panel manufacturing method includes a plurality of processes such as a thinning process for thinning a glass substrate, an encapsulation process, a cutting process, and a modular process. When the thinning process is performed, when only one side of the display panel is wet-etched with an etching solution, the masking film is attached to the other surface. After the thinning process is completed, in order to compensate for the fragility of the ultra-thin board, a transparent protective film may be attached and a subsequent process may be performed. Therefore, there is a case where it is necessary to peel off the masking film or the protective film thus attached. Especially in the case of masking the film, it is necessary to go through the stripping process.

In the prior art, the stripping process of the masking film is to peel the film by immersing the plate in a washing liquid or pure water for a long time and then peeling off the film by hand. For the protective film, when peeling off, it is similarly immersed in pure water and then peeled off by manual work.

However, the process of manual peeling after immersion in pure water or a washing liquid is quite time consuming and requires labor, thus causing a result of hindering production efficiency.

Accordingly, it is an object of the present invention to provide a film peeling method and a peeling system which can peel a film from a display panel in a simpler process.

The present invention can provide a film peeling method for peeling off a film attached to a display panel, and attaching a peeling film coated with a bonding agent having a bonding force to the surface of the display panel to which the film is attached The head is bonded to the film for peeling, and the cleaning film is moved to peel off the attached film, and the cleaning liquid is spread onto the display panel, thereby suppressing the prevention of static electricity and assisting in peeling off the film.

Furthermore, the present invention can provide a film peeling method for peeling off a film attached to a display panel, and attaching a peeling film coated with a bonding agent having a bonding force to the surface of the display panel to which the film is attached Moving the head to adhere the attached film to the film for peeling, and by peeling off the attached film by moving the moving head and the display panel, the washing liquid is spread to the display panel, thereby suppressing Static electricity and assist in stripping the film.

Moreover, in the film peeling method, the present invention can provide a film peeling method, in which the moving head is attached to an apex of the display panel at an initial stage and moved diagonally, and the movement of the display panel is performed by the stage on which the display panel is placed. Move and peel off the film.

Further, in the film peeling method, the present invention can provide a film peeling method, and the washing liquid is a weak alkali solution or water.

Further, in the film peeling method, the present invention can provide a film peeling method in which the washing liquid is at a temperature from room temperature to 60 °C.

Moreover, the present invention can provide a film peeling system comprising: a stage for placing a display panel to which a film is attached; and a moving head capable of attaching and moving the film on the display panel on the stage Upper; mobile cleaning fluid supply, as the moving head moves Simultaneously moving the cleaning liquid while moving; wherein, since the surface of the moving head is wrapped with the peeling film coated with the adhesive, the moving head is attached to the film of the display panel and peeled off as the moving head moves. The film of the panel is spread by the cleaning liquid supply on the surface of the display panel exposed by the peeling of the film, thereby suppressing the occurrence of static electricity and assisting the peeling of the film.

Moreover, in the film peeling system, the present invention can provide a film peeling system, wherein the display panel is fixed by vacuum suction, and the moving head is attached to an apex of the display panel at an initial stage to move diagonally, and The stage is also moving, causing the film to peel off.

Moreover, the present invention can provide a film peeling system that further includes an auxiliary moving head that moves diagonally to transfer the film being peeled off to the auxiliary moving head, thereby performing peeling of the film by the auxiliary moving head.

Moreover, the present invention can provide a film peeling system in which the stage is arranged in a plurality of parallel configurations, and the auxiliary moving head is configured to operate only on the last stage, and after the moving head completes the film peeling on a stage The film of the next stage is continuously peeled off, and the film is transferred to the auxiliary moving head on the last stage, so that the film peeling of the last stage is completed by the auxiliary moving head.

Moreover, the present invention can provide a film peeling system including a caliper moving head, a double-sided squeezing moving head or a hook-shaped moving head.

According to the present invention, the film attached to the display panel can be easily and quickly peeled off, and by washing the cleaning liquid, side effects due to static electricity can be suppressed, and peeling of the film can be made easier and more thorough.

100‧‧‧ display panel

200‧‧‧film

300‧‧‧Mobile head

350‧‧‧Binder

400‧‧‧cleaning liquid supply

500‧‧‧Auxiliary moving head

1, 2‧‧‧stage

Fig. 1 is a schematic configuration view showing a film peeling system of the present invention by a moving head including a binder.

Fig. 2 is a schematic view showing a process of peeling off a film while spreading a cleaning liquid by a film peeling system including the cleaning liquid supply of the present invention.

Fig. 3 is a schematic view showing a method of peeling a film toward the diagonal direction of the display panel by the film peeling system of the present invention.

Fig. 4 is a schematic view showing the process of terminating the release film by the auxiliary moving head by the film peeling system of the present invention.

Fig. 5 is an explanatory view showing a film peeling system having two stages as another preferred embodiment of the present invention.

Preferred embodiments of the present invention will be described in detail below with reference to the drawings.

As shown in Fig. 1, the display panel 100 to which the film is attached is placed on a stage (not shown), and the position of the alignment head is aligned, whereby the moving head 300 is brought closer. The moving head 300 is driven by a transport device and a driving device (not shown), and when the display panel is aligned on the stage, it is preferable to use vacuum suction on the bottom surface for the stability of the operation. Since the moving head 300 is wound with a film for peeling coated with the adhesive 350 or a bonding agent 350 coated with a strong adhesive force, it is strongly attached to the film 200 attached to the display panel 100. In order to strongly bond the adhesive agent 350 on the bottom surface to the film of the display panel 100 by friction and start to peel off the film 200, the movement of the moving head 300 is driven to perform a back-and-forth sliding motion several times in place. As a result, the moving head 300 strongly bonds the film 200 of the display panel to the bonding agent 350, and then the film 200 is peeled off as the moving head 300 rises and translates. Figure 1 will take this The peeling operation of the film 200 by the moving head 300 is sequentially shown. The moving head 300 and the stage can be moved at the same time, or the moving head can be moved only to move the stage after peeling to perform the next round of film peeling, and the moving head 300 can be moved laterally while advancing the stage so that the stage is advanced. The moving head 300 is relatively moved diagonally. That is, the film is peeled off by moving the moving head 300 relative to the display panel.

When the film 200 is forcibly peeled off as described above, there is a possibility that static electricity (breakage, influence on peripheral equipment, damage to surrounding people, etc.) occurs frequently, and thus the present invention provides a movement as shown in Fig. 2 in order to prevent static electricity. The cleaning liquid supply 400 is so as to spread the cleaning liquid while being peeled off from the film 200. The washing liquid is distilled water or a weakly alkaline washing liquid, and a washing liquid having a temperature of from ordinary temperature to 60 ° C is used, and a washing liquid having a temperature of about 40 ° C is preferably used. The cleaning liquid supply 400 is conveyed by a conveying device, and the configuration of the conveying device can be selected by those skilled in the art from various means according to the prior art.

The cleaning liquid supply 400 is made of a tube having a length that can accommodate the width of the display panel 100, and the cleaning liquid is sufficiently spread to a display exposed by the peeling of the film 200 by forming a plurality of holes therein. On the substrate of the panel 100. Thereafter, the washing liquid is removed by an air knife. It is of course also possible to use other means such as other dryers and/or to replace them.

Further, in order to effectively peel the film 200 by the movement of the moving head 300, as shown in Fig. 3, the vicinity of a vertex of the display panel 100 is taken as the starting point of the moving head 300, and the film 200 is strongly attached to the film 200 at this place. After the bonding agent 350 of the head 300 is moved, the moving head 300 is relatively moved toward the diagonal direction of the display panel 100 (the direction of the arrow in FIG. 3) to peel off the film 200. When the moving head 300 almost reaches the vertex of the opposite side of the diagonal, the peeling of the film 200 can be terminated by arranging the auxiliary moving head 500 near the arrival point. Auxiliary moving head is moved by the clamp The head, the two-sided squeeze type moving head or the hook-shaped moving head is configured to receive a substantial portion of the film 200 that has been peeled off and finally peel the film 200. The action has been shown in Figure 4. The operation of the auxiliary moving head 500 is based on a conveying device and a driving device (not shown).

Moreover, as the moving direction of the moving head 300 is drawn diagonally, the cleaning liquid supply 400 is also arranged in a direction parallel to the peeling line of the film 200, so that it can be driven to be washed in the diagonal direction while being sprinkled. Clean liquid.

On the other hand, as a modified embodiment of the above embodiment, it is possible to improve the efficiency by constructing a two-stage stage film peeling system which can peel a film from two consecutive sheets by one moving head 300 (refer to FIG. 5). ). The secondary stage is composed of the stage 1 and the stage 2, and the display panels are placed side by side on the respective stages, and the stage 1 and the stage 2 are carried out in accordance with the movement of the moving head 300. The film peeling was carried out continuously while moving. Although the film peeling can be completed in the stage 1 without using the auxiliary moving head 500, the auxiliary moving head 500 can also be driven to be conveyed to the corner of the stage 1 to complete the film peeling, and then return to the original position to complete. The manner in which the film of the stage 2 is peeled off. At this time, the peeling operation is performed by transporting the stage 1 and the stage 2 in the front-rear direction, and the relative positions of the stages 1 and 2 are made the same as the original position in order to continue the peeling operation. In the actual mass production system, when the film of the stage 1 is peeled off, the panel is unloaded from the stage and then transferred to the next process section, and the stage is retracted and the panel is re-equipped and then advanced. The relative position with the stage 2 is aligned to be the same as the initial state.

Therefore, the stage 1 and the stage 2 will continue to alternately move the display panel, so that the film peeling can be performed quickly.

Although the stage can be constructed in a more side-by-side configuration, it is appropriately designed because of the possibility of space limitations.

In each of the above embodiments, various sizes, moving speeds, cleaning liquid ejection conditions, air air knife operating conditions, and the like of the peeling system can be naturally changed or optimized depending on the situation, but in the present embodiment, the following conditions are performed. .

The position of the peeling moving head from the film surface before the action (Robot teching): 100 mm or less; the speed of the peeling (Robot): 100 m/s to 300 m/s; the temperature of the washing liquid: 20 to 70 ° C; the vacuum pressure of the stage: - 55Kpa~-70Kpa; movement speed of the stage: 500m/s~800m/s; air air knife pressure: 3kgf/cm ² ~7kgf/cm ² ; cleaning liquid injection pressure: 0.5kgf/cm ² ~1kgf/cm ² .

The present invention is not limited to the above-described embodiments, but is defined in accordance with the contents of the claims, and those having ordinary knowledge in the field of the invention can carry out various types within the scope of the claims. Deformation and heavy damage are self-evident.

100‧‧‧ display panel

200‧‧‧film

300‧‧‧Mobile head

350‧‧‧Binder

Claims (3)

A film stripping system comprising: a stage for placing a display panel to which a film is attached; and a moving head capable of being attached and moved on the film on the display panel on the stage; An auxiliary moving head that receives the film transferred from the moving head; and a mobile cleaning liquid supply that spreads the washing liquid together as the moving head moves; wherein the surface of the moving head is wrapped around the coating a film for peeling off the adhesive, thereby peeling off the film of the display panel with the movement of the moving head by attaching the moving head to the film of the display panel, and using the cleaning liquid supply The cleaning liquid is spread on the surface of the display panel exposed by the peeling of the film, thereby preventing the occurrence of static electricity and assisting the peeling of the film. The moving head is moved diagonally to transfer the film being peeled off. For the auxiliary moving head, the stage is arranged by a plurality of juxtaposed moving heads configured to operate only on the last stage of the stage, the moving head completing the film on one of the stages Stripped Continuously peeling off the film of the next stage, and transferring the film to the auxiliary moving head at the last position on the stage, thereby completing the film peeling of the last stage of the stage by the auxiliary moving head . The film peeling system according to claim 1, wherein the stage fixes the display panel by vacuum suction, and the moving head is attached to an apex of the display panel at an initial stage and is diagonally moved. And the stage is also moving, causing the film to peel off. The film peeling system of claim 1, wherein the auxiliary movement The head includes a caliper moving head, a double-sided squeezing moving head or a hook-shaped moving head.