JPH08240706A - Transfer device for color filter - Google Patents

Abstract

PURPOSE: To obtain a high transfer efficiency of a transfer film and to transfer a film to a substrate to produce a high-quality color filter by providing an air blowing part on a transfer roller. CONSTITUTION: Air is blown from an air blowing part 43 to uniformly press a transfer film 41 held by a pawl part 42 on a transfer roller 47. The roller 47 is continued to rotate, and when the part 42 comes near another air blowing part 44, air is blow from the part 44 to the edge part of the film 4. Further, the roller 47 is continued to rotate, and when the part 42 comes to the position where the film overlaps with a substrate, the part 42 is opened. Then air is blown from the part 44 to easily peel the film 41 from the roller 47. After the transfer is completed, blowing of air from the blowing part 43, 44 is stopped.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for producing a color filter having a plurality of colored pixels having different spectral characteristics on a substrate, and more particularly to an apparatus for transferring a color filter transfer film. is there.

[0002]

2. Description of the Related Art Conventionally, a spin coating device has been put into practical use as a film forming device for a photosensitive resin in a color filter manufacturing process. According to this apparatus, it is possible to obtain a high-quality color filter with good film thickness uniformity.

However, considering the properties of the color filter for liquid crystal, there are many problems in terms of mass productivity and economical efficiency. Therefore, various devices have been proposed for improving the coating device in the manufacturing process. Of these, JP-A-63
As a promising method, a photosensitive resin is previously formed into a film shape like 187203, and then this is pressure-bonded by heat or the like.

According to this method, since the coating film is formed in advance, the drying time at the time of coating is unnecessary, mass production adaptability is improved, and the photosensitive resin can be effectively used. It is highly economical.

In order to press-bond the above-mentioned film-shaped photosensitive resin onto a substrate, a transfer film (a transfer film is held by a protective film and a supporting film for protecting the film-shaped photosensitive resin). After removing the protective film, the process of placing each one on the glass substrate for the color filter, then heating and pasting, and peeling the supporting film after the transfer is completed has been adopted. .

[0006]

However, each transfer film is placed on a glass substrate for a color filter, and after heating, bonding and transfer, the support film is peeled off. However, there is a problem in production efficiency and transfer quality of the transferred film.

Particularly, immediately after thermocompression bonding of the transfer film, the transfer film and the transfer roller are difficult to separate due to the mutual pressure, which has been a cause of hindering automation of the transfer film. Further, the transfer film has a problem that wrinkles easily occur when the transfer roller is attached.

Therefore, the present invention has been proposed in view of the above problems, and provides a device that realizes high transfer efficiency of a transfer film and transfers onto a substrate to manufacture a high quality color filter. It is a thing.

[0009]

Means for Solving the Problems That is, the gist of the first invention is that a transfer film supply unit, a substrate supply unit, a transfer film and a substrate are superposed on each other by a transfer roller and a pressing roller. In a transfer device for a color filter provided with a transfer part for transferring the photosensitive resin to the substrate and an ejecting part for simultaneously ejecting the transfer film and the substrate, at least the air blowing part is provided on the transfer roller. Another object of the present invention is to provide a color filter transfer device.

The gist of the second invention is that the transfer film supply unit, the substrate supply unit, the transfer film and the substrate are superposed on each other by the transfer roller and the pressing roller, and the photosensitive resin on the transfer film is aforesaid. A transfer device for a color filter provided with a transfer part for transferring to a substrate and an ejecting part for simultaneously ejecting the transfer film and the substrate, wherein an air blowing part is provided at least in the vicinity of the transfer roller. It is to provide a transfer device.

One embodiment of the present invention is shown in the cross-sectional view of FIG.
The operation will be described with reference to this figure. 1) The support film 112 and the photosensitive resin film 14 that form the transfer film are sandwiched between the guide rollers 13 and move to the claw portions 15 of the transfer roller 11 in synchronization with the rotation of the transfer roller 11. 2) The sensor 110 recognizes that the support film 112 and the photosensitive resin film 14 have come near the claw portion 15. 3) The sensor 111 recognizes that the ends of the support film 112 and the photosensitive resin film 14 have come to the position where they can be sandwiched by the claw portions 15. (When both sensors do not sense, a warning is given and automatic stop is performed. Or, a warning is given and the transfer roll is continuously rotated without the transfer film being sandwiched, and is sandwiched by the next claw portion 15 '.) 4) The claw portion 15 Only the both ends of the support film 112 and the front end of the photosensitive resin film 14 are sandwiched and closed. An elastic member 16 such as rubber is provided at the contact portion between the claw portion 15 and the transfer film so that the support film 112 and the photosensitive resin film 14 are not scratched. 5) Immediately after that, air is blown from the air blowing device 19 to transfer the transfer film held by the claws to the transfer roller 1
Press evenly on 1. Here, the operating state of the blowing device will be specifically described with reference to FIGS. 4 to 7. The transfer roller continues to rotate, and when the claw portion 52 comes near the other air blowing device 54, air is blown from the air blowing device 54 toward the end portion of the transfer film (FIG. 5). Further, the transfer roller 57 continues to rotate, and the claw portion 52
, When it comes to the position where it overlaps with the board that has moved forward,
2 opens (Fig. 5). Thereafter, the air is blown from the transfer roller by the air blowing device 45 to facilitate the peeling of the transfer film 51 from the transfer roller 57 (FIG. 6). Finally, at the end of the transfer, the blowing of air from the blowing devices 53 and 54 stops (FIG. 7).

[0012]

[Embodiment 1] In order to explain the content of the present invention more specifically, the process of transferring a transfer film to a substrate will be sequentially described with reference to FIG. FIG. 3 is an overall view of the transfer device of the present invention.

The structure of the transfer film 31 includes at least a protective film, a film-shaped photosensitive resin and a support film.
Consists of layers. Therefore, it is necessary to separate these and transfer only the photosensitive resin used for the color filter to the substrate.

The transfer film 31 is set as a continuous roll in the supply section 32 of the apparatus. This supply unit 32
However, the number of rolls is one, but in order to further improve the production efficiency, a plurality of rolls may be set or an auto paster capable of automatically connecting films may be used.

From the supply section 32 of the transfer film 31, the first,
A few nip rollers 33, 34, 35 pull the transfer film 31 in synchronization with each other. The transfer film 31 from the supply unit 32 passes through the dancer roller 36 for tension control, and then reaches the mark reading unit 315 via the first nip roller 33. The mark reading unit 315 is provided to read the information written in advance on the transfer film 31. For example, the quality of the transfer film is read, and if the transfer film is defective, the transfer of the substrate is stopped.

Here, the dancer roller 36 for tension control provided in front of the supply unit 31 is 5 to 30.
A weight such as a kilogram is set, and the tension is kept constant by changing the position of the dancer roller 36. This is because when the transfer film 31 is strongly pulled or loosened, a feedback action is applied by the dancer roller 36. It should be noted that the side of the discharge section 36 'of the protective film can be kept at a constant tension by the same device.

The protective film is peeled off by the second nip roller 34, and wound on the discharge portion 37 via the dancer roller 36 '.

Next, the second and third nip rollers 3
The transfer film 31 is sandwiched by 4 and 35 and cut by a cutter 316 in accordance with the size of the substrate 313. The amount of film cut at this time is calculated from the size of the substrate set in the setting unit of the control unit. In the case of the present embodiment, the calculation is performed so that it is slightly smaller than the set size of the substrate. The protective film is peeled off, and the transfer film cut into a certain size by the cutter 316 is the guide roller 3
It moves in the direction of the transfer roller 39 while being nipped by 8. still,
A rotary cutter or the like can be used as the cutter 316.

On the other hand, the substrate is preheated. This is because sufficient heat is applied to the substrate to improve the adhesion of the photosensitive resin to the substrate.

The operation of the transfer roller 39 having the features of the present invention is as described above. That is, the space between the claw portion (not shown in FIG. 3) and the transfer roller 39 is widened by the detection of the first sensor (not shown in FIG. 3), and the second sensor (FIG.
(Not shown), the transfer film 31 is sandwiched between the transfer roller and the transfer roller by movement of a claw (not shown in FIG. 3). The operation of the blowing device or the like at this time is as described above.

Below the transfer roller 39 is a heated pressing roller 318, which heats the lower part of the substrate 313 while pressing the transfer film 31 and the substrate 313.
To a high temperature (80 ° C to 170 ° C).

Before and after the heated pressing roller 310, there are conveying rollers 312 at regular intervals so that the substrate 313 can be conveyed smoothly, and each roller 312 is connected by a timing mechanism using a timing belt. The substrate is transported at a constant timing while being synchronized with the driving device of the loading table 311.

The substrate 313 on which the transfer film 31 is transferred is conveyed to the peeling portion of the transfer film 31, and the supporting film of the transfer film attached is peeled from the substrate 31 to leave the photosensitive resin on the substrate. In some cases, the support film is not peeled off before the exposure, the exposure is performed while the support film is held, and the support film is peeled off after the exposure. This is because most of the photosensitive materials used are of the radical polymerization type, and the deactivation of radicals can be prevented by obtaining the effect of the oxygen barrier film.

The color filter produced in this way can maintain high quality of the photosensitive material economically in the transfer step and without impairing the production efficiency.

[0025]

According to the first aspect of the invention, an air blowing device provided with a continuous transfer film on the transfer roller can easily separate the transfer film and the transfer roller immediately after transfer, and can maintain high production efficiency. That is the effect.

In the second aspect of the present invention, the transfer film is uniformly spread over the substrate so that the transfer can be performed, so that the generation of wrinkles at the time of transfer can be reduced and a high quality color filter can be manufactured. . Further, by spraying clean air onto the transfer film and the transfer roller, it is possible to prevent and remove particles from adhering to the surface, which has the effect of improving the manufacturing yield. Furthermore, by adopting warm air as the air, the surface temperature of the transfer film is prevented from lowering and the adhesion between the photosensitive resin and the substrate is improved, so pixel peeling is reduced and manufacturing yield is improved. It is effective.

[0027]

[Brief description of drawings]

FIG. 1 is an enlarged cross-sectional view showing the periphery of a transfer roller portion of the main invention of the present invention (one cut along line AA ′ in FIG. 2).

FIG. 2 is an enlarged front view showing the periphery of a transfer roller portion of the main invention of the present invention.

FIG. 3 is an example of a transfer film transfer device using the present invention.

FIG. 4 is a cross-sectional view showing the operation of the blowing device of the main invention of the present invention (immediately after the transfer film is gripped).

FIG. 5 is a cross-sectional view showing the operation of the blowing device of the main invention of the present invention (when the substrate is fed after the transfer film is gripped).

FIG. 6 is a cross-sectional view showing the operation of the blowing device and the like of the main invention of the present invention (at the start of transfer).

FIG. 7 is a cross-sectional view showing the operation of the blowing device of the main invention of the present invention (at the end of transfer).

[Explanation of symbols]

 11 Transfer Roller 12 Pressing Roller 13 Guide Roller 14 Transfer Film (Film-Shaped Photosensitive Resin Part) 14 'Transfer Film (Film-Shaped Photosensitive Resin Part) 15 Claw 15' Claw 16 Elastic Member 16 'Elastic Member 17 Air Blower 17 'Air blowing device 18 Air blowing device 19 Air blowing device 110 Sensor 110' Sensor 111 Sensor 111 'Sensor 112 Transfer film (supporting film) 112' Transfer film (supporting film) 113 Substrate 21 Transfer film 22 Transfer roller supporting member 23 Claw Part 24 Blow-out port 25 Sensor 26 Sensor 31 Transfer film 32 Transfer film supply device 33 Nip roller 34 Nip roller 35 Nip roller 36 Dancer roller 36 'Dancer roller 37 Protective film discharge part 38 guy Roller 39 Transfer roller 310 Pressing roller 311 Carrying platform 312 Conveying roller 313 Substrate 314 Conveying member 315 Mark reading device 316 Cutter 316 'Cutter receiving 317 Heating device 318 Stopper 41 Transfer film 42 Claw part 43 Blowing device 44 Blowing device 45 Blowing device 46 Substrate 47 transfer roller

Front Page Continuation (72) Inventor Ken Sasaki 1-1-1, Ichigaya-Kagacho, Shinjuku-ku, Tokyo Dai Nippon Printing Co., Ltd.

Claims (2)

[Claims] 1. A transfer film supply unit, a substrate supply unit,
A color provided with a transfer section for superposing the transfer film and the substrate by a transfer roller and a pressing roller to transfer the photosensitive resin on the transfer film to the substrate, and a discharge section for simultaneously discharging the transfer film and the substrate. A transfer device for a color filter, wherein at least the transfer roller is provided with an air blowing portion. 2. A transfer film supply unit, a substrate supply unit,
A color provided with a transfer section for superposing the transfer film and the substrate by a transfer roller and a pressing roller to transfer the photosensitive resin on the transfer film to the substrate, and a discharge section for simultaneously discharging the transfer film and the substrate. A transfer device for a color filter, characterized in that, in the transfer device for a filter, an air blowing portion is provided at least in the vicinity of the transfer roller.