KR20100035448A - Laser apparatus for cutting polaroid film - Google Patents

Abstract

PURPOSE: A laser part for cutting a Polaroid film is provided to improve the accuracy of cutting by using laser beam. CONSTITUTION: A laser part for cutting a Polaroid film comprises a fixed type reflector, a transportable reflector, and a transportable reflector moving member. The fixed type reflector reflects the laser beam with the traverse direction of a Polaroid film(10). The transportable reflector cuts the Polaroid film by emitting laser beam which is reflected from the fixed type reflector in a vertical direction. The transportable reflector moving member transfers the transportable reflector to the traverse direction of the Polaroid film.

Description

Laser apparatus for cutting polaroid film

The present invention relates to a laser device for cutting a polarizing film, and more particularly, to a laser device for cutting a polarizing film, the laser beam reflected from the fixed reflector M1 and the fixed reflector M1 reflecting the oscillated laser beam. In the laser device for cutting a polarizing film to make it possible to smoothly cut the fixed polarizing film by configuring a movable reflector (M2) to reflect the laser head in the middle to move the projection of the laser beam on the polarizing film It is about.

In general, as much attention has been paid to the increase in size and quality of display devices as a medium for transmitting image information, it is noted that various flat panel display devices have been developed and disseminated in place of CRT (Cathode Ray Tube), which has been used until now. same. One of the flat panel display devices, the liquid crystal display device has developed far beyond the CRT in terms of image quality and color, and has become a main product dominating the world market.

The general manufacturing process of the general TFT-LCD panel (Thin Film Transistor Liquid Crystal Display Panel) constituting the liquid crystal display device as described above is as follows. First, as an overview, one pixel (comprising three subpixels R, G, and B) of a TFT-LCD panel is as fine as about 0.3 mm in width. Of course, the TFT (Thin Film Transistor) that fits in it is smaller. Furthermore, to reach a resolution of 1600 x 1200, the number of pixels is 1.19 million, which requires 3 times (R, G, B), considering each sub-pixel, and requires 576 million TFTs. Therefore, a semiconductor level process is required as a process that requires high precision of the entire process itself.

Meanwhile, the manufacturing process of the TFT-LCD panel as described above is largely divided into a TFT process, a color filter (CF) process, a cell process, and a module process, and has two glasses that have undergone a TFT process and a CF process. One panel is made through a cell process, and a panel processed through a cell process is made through a module process, and a TFT-LCD panel that is actually used for a monitor or a TV is made.

First, the TFT (Thin Film Transistor) process is a process of forming a basic electrode, which makes the electrode of each cell the most basic and essential process. The process sequence includes five steps of gate electrode generation, insulating film and semiconductor film generation, data electrode generation, protective film generation, and pixel electrode generation, but at least one pattern process is required for each step. This pattern process can be called the core of the TFT-LCD panel manufacturing process. Similar pattern processes are required for the CF process as well as the TFT process.

The pattern process as described above is a very precise and complicated process by itself. At least this process is performed several times to make a single TFT-LCD panel. Of course, the same process is not used then, but the schematic process is similar. This pattern process consists of deposition, cleaning, photoresist (PR) coating, exposure, development, etching (PR) process, PR stripping (Strip process), and inspection process. This is necessary.

TFT-LCD, on the other hand, does not emit light on its own like PDP or OLED (organic EL), but controls the brightness of light by controlling the arrangement of liquid crystals in each cell for constant light from the backlight. Since the backlight itself is white light, CF (Color Filter) plays an important role in changing the arrangement of liquid crystals to control the amount of light, but to make R, G, and B to realize color. This CF is located on the top of the TFT-LCD panel and is made through a process separate from the TFT process. The CF process also requires the pattern process described above.

The above-described CF (Color Filter) process requires a BM (Black Matrix) process (deposition, cleaning, PR coating, exposure, development, etching, and peeling pattern process), and pixel-by-pixel process (this pattern process was performed as described above. It is a slightly different process from the process of evaporation and cleaning without the need for the deposition and cleaning process, by applying a color-sensitive photosensitive material to the process of exposure and development) and the ITO process (Indium Tin Oxide: good permeability and conductivity, chemical and thermal stability Excellent transparent electrode material). In addition, some additional processes may be added depending on the type of panel (VA, IPS, TN, etc.).

In addition, the cell process is a process of combining and cutting two glasses made in the CF process and the TFT process into one, and cleaning the CF, the TFT, the alignment film printing, the rubbing process, the spacer dispersion, Bonding (TFT and CF substrates are precisely bonded), cutting (cutting the bonded substrates into separate panels), liquid crystal injection, and final inspection are performed in this order.

The module process of the above-described TFT-LCD panel manufacturing process is a final step for attaching a polarizing film (or a polarizing plate), a PCB, a backlight unit, etc. to a panel made of a cell process as a final process for making a finished product panel. , Polarizer film attachment, TAB attachment, autoclave, PCB attachment, BLU (Back Light Unit) assembly, and inspection.

In the above-described module process, the polarizing film attached to the upper and lower parts of the panel has a function of making the incident light while vibrating in various directions to be light that vibrates only in one direction (that is, polarization). The polarizing film is usually attached to cross 90 degrees. In this case, a protective film for protecting the polarizing film is attached to each of the upper and lower surfaces of the polarizing film. In order to attach the polarizing film to the upper and lower surfaces of the panel, the protective film on the upper and lower surfaces of the polarizing film is first applied. After removal, it should be attached to the upper and lower surfaces of the panel.

On the other hand, the polarizing film (Polaroid Film) refers to a film having a property that can pass or block the vertical or horizontal polarization of the incident light, thin film transistor liquid crystal display device (TFT-LCD) such as notebook computers and monitors And optical films used for camera special effects filters and stereoscopic glasses. Although the intensity of the light emitted from the backlight of the LCD module is equal in all directions, the polarizing film transmits only the light oscillating in the same direction as the polarization axis and absorbs or reflects the other light to create polarization in a specific direction. Do it. When the polarization passes the LCD liquid crystal, the brightness of the pixel is changed by electrically adjusting the alignment direction of the liquid crystal for each pixel.

In order to attach the polarizing film to the upper and lower surfaces of the panel, the polarizing film is subjected to a process of cutting the polarizing film into a polarizing plate having a predetermined size so as to correspond to the size of the panel. The mechanical cutter is used to cut the polarizing film to correspond to the size of the panel.

Therefore, in the case of the polarizing film cutting device according to the prior art as described above, since a large amount of dust is generated in the process of cutting the polarizing film through the shooter cutter, a separate treatment process for treating the generated dust is required. do. Since a separate dust treatment process is required as described above, the production cost increases considerably and the yield decreases due to the occurrence of environmental treatment costs.

In addition, in the case of the polarizing film cutting device according to the prior art as described above, if the polarizing film is cut through the shooter cutter, the cutting surface of the polarizing film is not uniform, requiring a polishing process to uniformly polish the cutting surface of the polarizing film. As a result, the additional process causes problems such as an increase in production cost and a decrease in production volume.

In order to solve the problems described above, a cutting device using a laser has been developed and commercialized. Looking at the configuration of the cutting device using a laser, the entire laser housing in the fixed state of the polarizing film is fixed to the longitudinal direction of the polarizing film. Since it is made of a simple cutting structure that is moved in the transverse direction to cut the polarizing film there is a problem that the cutting precision caused by moving the entire laser housing is reduced.

The present invention has been made to solve the above-mentioned problems of the prior art, by reflecting the laser beam reflected from the fixed reflector (M1) reflecting the laser beam to the laser head while moving in the transverse direction of the polarizing film polarizing film The object of the present invention is to provide a laser device for cutting a polarizing film, which enables the cutting of a fixed polarizing film smoothly through a laser device consisting of a movable reflector (M2) that allows the laser beam to be projected onto the cutting. have.

In addition, another object of the technique according to the present invention is to reflect the laser beam reflected from the fixed reflector (M1) reflecting the laser beam to the laser head while moving in the transverse direction of the polarizing film to project the laser beam onto the polarizing film Through the laser device consisting of a movable reflector (M2) to be made to be cut is made to smoothly cut the fixed polarizing film to improve the cutting precision of the polarizing film and to maximize the productivity.

The present invention configured to achieve the above object is as follows. In other words, the laser device for cutting a polarizing film according to the present invention is a laser device for cutting a polarizing film by cutting a polarizing film by projecting a laser beam onto the polarizing film on the transfer line through two reflector structures reflecting the oscillated laser beam. A fixed reflector (M1) for reflecting a laser beam installed and fixed inside the laser housing in a horizontal direction while reflecting the laser beam in a transverse direction of the polarizing film; The polarizing film is cut through the projection of the laser beam reflected from the fixed reflector M1 in the vertical direction, which is installed in the laser housing so as to face a predetermined distance from the fixed reflector M1, and to be movable in the lateral direction of the polarizing film. A movable reflector M2; And a movable reflector moving means installed inside the laser housing to move the movable reflector M2 in the transverse direction of the polarizing film.

On the other hand, the movable reflector moving means in the configuration of the present invention as described above LM rail is installed in the transverse direction perpendicular to the transfer line on one side inside the laser housing; An LM block movably coupled on the LM rail to support the movable reflector M1; And it can be made of a configuration of a linear motor for moving the LM block in the transverse direction on the LM rail.

Therefore, in the laser device for cutting a polarizing film using the laser according to the present invention as described above, the cutting of the polarizing film is transversely caused by the horizontal movement of the movable reflector M2 in a state in which the polarizing film on the laser housing and the transfer line is fixed. It can be seen that the technology is made in the direction.

In addition, the laser head for projecting the laser beam reflected by the movable reflector (M2) to the polarizing film on the transfer line in the configuration of the technology according to the present invention is configured to be movable in the lateral direction like the movable reflector (M2) It is suitable that the movement is made at the same time as the movement of M2.

According to the present invention, the laser beam reflected from the fixed reflector (M1) reflecting the laser beam is reflected by the laser head while moving in the transverse direction of the polarizing film to project the laser beam onto the polarizing film so that the cutting can be made. Through the laser device composed of a movable reflector M2, the effect of smoothly cutting the fixed polarizing film is expressed.

In addition, the technique according to the invention reflects the laser beam reflected from the fixed reflector (M1) reflecting the laser beam to the laser head while moving in the transverse direction of the polarizing film, the projection of the laser beam on the polarizing film is cut By making the cutting of the fixed polarizing film smoothly through the laser device composed of a movable reflector (M2) to achieve the effect is to improve the cutting precision of the polarizing film and to maximize the productivity.

Hereinafter, a laser device for cutting a polarizing film of the present invention will be described in detail with reference to the accompanying drawings.

1 is a plan view showing the overall configuration of a polarizing film (POL) cutting system using a laser having a laser device for cutting a polarizing film according to the present invention, Figure 2 is a laser comprising a laser device for cutting a polarizing film according to the present invention Side configuration diagram showing the overall configuration of the polarizing film (POL) cutting system using, Figure 3 is a side configuration diagram showing an enlarged laser device for cutting a polarizing film according to the present invention.

1 to 3, a polarizing film (POL) cutting system 100 using a laser to which a laser device for cutting polarizing film 150 according to the present invention is applied will be described. Winding device 110, the polarizing film 10 supplied through the winder device 110 to rotate the plurality of rollers to support the rotatable rotatable continuous to be made through a plurality of rollers The polarizing film transfer which transfers the flattened polarizing film 10 which spreads the flat curled polarizing film 10 to the flat plate shape, and the flattened polarizing film 10 through the dancing roller device 120 to the rear horizontal surface of a transfer line. The device 130, the polarizing film adsorption device 140, the polarizing film adsorption device 140 for fixing the polarizing film 10 transported through the polarizing film transfer device 130 through the vacuum adsorption fixed by vacuum adsorption Polarizing film (10) Laser device 150 for cutting through the projection of the laser to form a polarizing plate 20, the polarizing plate discharge device 160 for discharging the polarizing plate 20 formed in a predetermined size through the laser device 150 on the rear-side horizontal plane And a polarizing plate aligning device 170 configured to stack and arrange the polarizing plates 20 transferred to the rear side on the transfer line through the polarizing plate discharge device 160.

Looking at the transfer process of the polarizing film 10 through the polarizing film cutting system 100 using the laser applied to the present invention configured as described above, first, rotating the polarizing film 10 in the roll state to the winder device 110 When coupled to the polarizing film feeder 130 via the dancing roller device 120 in the coupled state, and then transferred through the drive of the polarizing film feeder 130, the polarization of the roll state coupled to the winder device 110 The film 10 is unrolled while the polarizing film 10 in the curled state is flattened while passing through the dancing roller device 120.

On the other hand, as described above, the polarizing film 10 is flattened through the dancing roller device 120 to a control controller (not shown) that controls the entire cutting system 100 through the polarizing film transfer device 130. After being transferred to the set size and guided to the polarizing film adsorption device 140, the transport of the polarizing film 10 is stopped, and the polarizing film adsorption device 140 vacuums the polarizing film 10 positioned thereon. Fixed by adsorption. That is, while the polarizing film 10 is fixed by the polarizing film adsorption device 140, the transfer of the polarizing film 10 is stopped.

As described above, when the polarizing film 10 is fixed to the upper portion of the polarizing film adsorption device 140 by vacuum adsorption, the laser device 150 is driven to cut the polarizing film 10 to a predetermined size. That is, the laser device 150 cuts the polarizing film 10 to a predetermined size and forms the polarizing plate 20. After forming the polarizing plate 20 through the cutting of the polarizing film 10, the vacuum adsorption of the polarizing film 10 and the polarizing plate 20 is released and at the same time, air is discharged from the polarizing film adsorption device 140. In order to float the polarizing film 10 and the polarizing plate 20, the polarizing film 10 and the polarizing plate 20 may be smoothly transferred.

Next, as described above, the polarizing film transport apparatus 130 and the polarizing film 10 and the polarizing plate 20 are floated by air discharged from the polarizing film adsorption device 140. When the polarizing plate discharge device 160 is driven, the polarizing film 20 is discharged by the polarizing plate discharge device 160, and the polarizing film 10 is polarized film adsorption device 140 by the polarizing film transfer device 130. Is transferred to. In this case, the polarizing film transporting device 130 and the polarizing plate discharging device 160 for transporting the polarizing film 10 and the polarizing plate 20 are driven at the same speed and are transported in the same direction. Do not cause interference.

As described above, when the polarizing film 10 and the polarizing plate 20 are transferred by the driving of the polarizing film conveying device 130 and the polarizing plate discharging device 160, the polarizing plate 20 is formed by the polarizing plate discharging device 160. The transfer is aligned with the polarizing plate aligning device 170, the polarizing film 10 is transferred by the polarizing film transfer device 130 at the same speed as the polarizing plate 20 is transferred to the polarizing film adsorption device (140). Therefore, the cutting of the polarizing film 10 by the laser device 150 can be seen that the transfer of the polarizing film 10 and the polarizing plate 20 is made at the same time.

Next, a pattern for cutting a polarizing plate 20 of a predetermined size into a polarizing film 10 adsorbed and fixed through a vacuum in the polarizing film adsorption device 140 of the polarizing film cutting system 100 using the laser described above. The laser device 150 of the present invention will be described in detail. Figure 4 is a perspective configuration diagram schematically showing a laser device for cutting a polarizing film according to the invention, Figure 5 is a front configuration diagram schematically showing a laser device for cutting a polarizing film according to the invention, Figure 6 is a polarizing film cutting according to the invention It is a schematic side view of a laser device.

4 to 6, the polarizing film cutting laser device 150 according to the present invention is installed and fixed inside the laser housing 152 to reflect the oscillated laser beam in the horizontal direction, but the polarizing film 10 Fixed reflector (M1) for reflecting the laser beam in the transverse direction of the laser housing 152, the fixed reflector (M1) is installed opposite to a predetermined distance from the fixed reflector (M1), but is installed to be movable in the transverse direction of the polarizing film (10) The movable reflector M2 which cuts the polarizing film 10 through the projection of the laser beam reflected from the reflector M1 in the vertical direction, and is installed inside the laser housing 152 to convert the movable reflector M2 into the polarizing film 10. It consists of a movable reflector moving means for enabling the movement in the lateral direction.

In the configuration of the laser device 150 according to the present invention configured as described above, the fixed reflector M1 is fixedly installed inside the laser housing 152 to reflect the oscillated laser beam to the transverse movable reflector M2. The movable reflector M2 is installed to be movable in the transverse direction in a direction opposite to the fixed reflector M1 and reflects the laser beam reflected from the fixed reflector M1 downward in the vertical direction. The horizontally cut the adsorption fixed polarizing film 10 by the). At this time, the laser beam reflected downward by the movable reflector M2 is installed under the laser housing 152 and is projected through the laser head 156 positioned on the same vertical line as the movable reflector M2.

Meanwhile, the laser head 156 projecting the laser beam reflected downward through the movable reflector M2 to the polarizing film 10 is the same as the movable reflector M2 when the movable reflector M2 is moved in the lateral direction. The laser beam is moved so that the laser beam reflected downward in the vertical direction through the movable reflector M2 can be projected onto the polarizing film 10 through the laser head 156. In this case, the means for moving the laser head 156 together with the movable reflector M2 may be moved through an LM guide (not shown) and a linear motor (not shown) similarly to the movable reflector moving means.

The laser device 150 according to the present invention as described above is a movable in the vertical reflection of the laser beam reflected in the transverse direction of the polarizing film 10 through the fixed reflector (M1) vertically through the movable reflector (M2) The polarizing film 10 is cut into a predetermined size while being moved toward the direction in which the fixed reflector M1 is installed by the reflector moving means. That is, the laser device 150 according to the present invention is configured to cut the polarizing film 10 while the movable reflector M2 is moved in the transverse direction of the polarizing film 10 through the movable reflector moving means.

In other words, the movable reflector M2 is moved in the transverse direction perpendicular to the longitudinal direction of the polarizing film 10 through the movable reflector moving means in the transverse direction of the movable reflector M2 direction by the fixed reflector M1. The polarized film 10 is cut by reflecting the reflected laser beam downward in a vertical direction. At this time, the polarizing film 10 is in a fixed state of adsorption through the polarizing film adsorption device 140. In addition, the laser housing 152 constituting the outer shape of the laser device 150 according to the present invention is also fixed on the transfer line. Only, the movable reflector M2 is moved in the transverse direction through the movable reflector moving means to cut the polarizing film 10.

Looking at the configuration of the movable reflector moving means for moving the movable reflector M2 in the transverse direction as described above, the movable reflector moving means is an LM rail 154a which is installed in one side of the laser housing 152 in the horizontal direction perpendicular to the transfer line. ), The LM block 154b movably coupled on the LM rail 154a to support the movable reflector M1, and the LM block 154b on the LM rail 154a transversely through driving by electrical application. It consists of the structure of the linear motor 154c to move to.

In the configuration of the movable reflector moving means constituting the present invention, the LM rail 154a is installed across the fixed reflector M1 and the movable reflector M2 on the inner upper side of the laser housing 152. At this time, the length of the LM rail 154a is composed of a length capable of cutting the entire transverse direction of the polarizing film 10 in the process of moving the movable reflector M2 from one side to the other side. The LM block 154b for moving the movable reflector M2 in the lateral direction on the LM rail 154a is movably coupled to the LM rail 154a provided in the lateral direction. In addition, the LM block 154b movably coupled on the LM rail 154a is installed and fixed with a movable reflector M2 for reflecting the laser beam reflected from the fixed reflector M1 in a vertical downward direction.

Therefore, as described above, the polarizing film cutting laser device 150 according to the present invention is moved by the horizontal movement of the movable reflector M2 in a state where the laser housing 152 and the polarizing film 10 on the transfer line are fixed. It can be seen that the cutting of the polarizing film 10 is a technique made in the transverse direction. Of course, in the technique according to the present invention, the fixed reflector M1 serves to reflect the laser beam, which is fixed and oscillated inside the laser housing 152, to the movable reflector M2 in the lateral direction.

As described above, the laser device 150 for cutting a polarizing film according to the present invention cuts the polarizing film 10 fixed by vacuum adsorption by the polarizing film adsorption device 140 through the projection of a laser beam to the polarizing plate 20. The laser device 150 moves only the movable reflector M2 in a state in which the polarizing film 10 is fixed through the polarizing film adsorption device 140 with the laser housing 152 as a fixed structure. By doing so, the polarizing film 10 can be easily cut and can be precisely cut.

The present invention is not limited to the above embodiments, and various modifications can be made within the scope of the technical idea of the present invention.

1 is a plan view showing the overall configuration of a polarizing film (POL) cutting system using a laser configured a laser device for cutting a polarizing film according to the present invention.

Figure 2 is a side view showing the overall configuration of a polarizing film (POL) cutting system using a laser is configured a laser device for cutting polarizing film according to the present invention.

Figure 3 is a side configuration view showing an enlarged laser device for cutting a polarizing film according to the present invention.

Figure 4 is a perspective configuration diagram schematically showing a laser device for cutting a polarizing film according to the invention.

Figure 5 is a front configuration diagram schematically showing a laser device for cutting a polarizing film according to the invention.

Figure 6 is a schematic side view showing a laser device for cutting a polarizing film according to the invention.

[Description of Symbols for Main Parts of Drawing]

100. Cutting system 110. Winder device

120. Dancing roller device 130. Polarizing film feeder

140. Polarizing film adsorption device 150. Laser cutting device

152. Laser housing 154a. LM rail

154b. LM block 154c. Linear motor

156. Laser Head 160. Polarizer Discharge Device

170. Polarizer Alignment Device 180. Polarizer Carrier

Claims (4)

In the laser apparatus for cutting a polarizing film using a laser for cutting the polarizing film by projecting a laser beam on the polarizing film on the transfer line through two reflector structures reflecting the oscillated laser beam, A fixed reflector (M1) installed in the laser housing to reflect the laser beam oscillated and fixed in a horizontal direction, but reflecting the laser beam in a transverse direction of the polarizing film; The laser housing is installed to be opposed to the fixed reflector (M1) at a predetermined distance inside the laser housing so as to be movable in the transverse direction of the polarizing film through the projection of the laser beam reflected from the fixed reflector (M1) in the vertical direction A movable reflector M2 for cutting the polarizing film; And A laser apparatus for cutting a polarizing film, comprising: a movable reflector moving means installed inside the laser housing to move the movable reflector M2 in the transverse direction of the polarizing film. According to claim 1, The movable reflector moving means LM rail is installed in the transverse direction perpendicular to the transfer line on one side of the laser housing; An LM block movably coupled to the LM rail to support the movable reflector M1; And Laser device for cutting a polarizing film, characterized in that consisting of a linear motor for moving the LM block in the transverse direction on the LM rail. The polarizing film of claim 1 or 2, wherein the polarizing film can be cut by lateral movement of the movable reflector M2 while the polarizing film on the laser housing and the transfer line is fixed. Laser device for cutting polarizing film. According to claim 3, wherein the laser head for projecting the laser beam reflected by the movable reflector (M2) to the polarizing film on the transfer line is configured to be movable in the transverse direction, such as the movable reflector (M2) is the movable reflector ( Laser device for cutting a polarizing film, characterized in that the movement can be made simultaneously with the movement of M2).

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