CN100426069C - Pressure defoaming furnace and application method thereof - Google Patents

Abstract

The invention relates to a pressurization defoaming system for removing panel bubbles and an application method thereof, which can form a connected pressurization defoaming system by a parallel connection pipeline through a traditional independently operated pressurization defoaming furnace body. Therefore, the invention not only can reuse the waste gas to be discharged in the traditional process to save more energy, but also can shorten the process time of pressurizing and heating so as to improve the overall process efficiency.

Description

Pressurized defoaming furnace and its application method

technical field

The invention relates to a pressurized defoaming system and its application method, especially to a pressurized defoaming system suitable for removing air bubbles on a panel and its application method.

Background technique

At present, in the panel process equipment, there is generally an independently operated pressurized defoaming furnace, the main purpose of which is to remove the residual air bubbles after the polarizing film is pasted on the panel. In the traditional method, the cassette filled with panels is put into an independently operated pressurized defoaming furnace, and then pressurized and heated for a period of time. When the time required for the process is reached, the high-pressure and high-temperature air in the furnace must be removed before the furnace door can be opened to exchange for another batch of cassettes, so as to continue the process of removing air bubbles for the next batch of panels.

Please refer to FIG. 1 , which is a schematic diagram of an operating system 100 of a traditional independently operated pressurized degassing furnace 101 . Wherein, the known operating system 100 may include a pressurized defoaming furnace 101 , a carrying mechanism 102 capable of carrying three panel cassettes A, B, and C, and an automatic conveying mechanism 103 for transporting each cassette. First, the cassettes containing untreated panels can be sent into the operating system 100 from the outlet 110 by the automatic conveying mechanism 103, and then the cassettes are placed one by one into the carrying mechanism 102 that can carry the cassettes, and the The carrying mechanism 102 loaded with three cassettes A, B, and C is sent into the pressurized defoaming furnace 101 to perform a pressurized heating process for removing bubbles from the panel. When a preset process time is reached, the high-pressure and high-temperature air in the furnace must be removed before the cassettes can be sent out of the pressurized degassing furnace 101 by the carrying mechanism 102 one by one. Finally, the automatic transport mechanism 103 is used to output the cassettes containing the processed panels from the outlet 120 to the operating system 100 . In this way, the cycle operation of the next batch of panels can be carried out.

Apparently, for the next batch of panels to be processed, the traditional operating system 100 must be pressurized and heated again, so that the cyclic process steps can be performed in the pressure degassing furnace 101 again. Due to the increasingly large panels of the new generation, a relatively large pressurized furnace body is required to meet the size requirements of the panel. However, with the supply of each pressurized heating in the traditional method, not only consumes a lot of energy, but also increases the furnace body. The process time of pressurization and heating.

Therefore, there is an urgent need for a pressurized degassing system that saves energy and shortens the process time to solve the above-mentioned problems in the operating system of the traditional pressurized degassing furnace.

Contents of the invention

The object of the present invention is to provide a pressure defoaming system.

Another object of the present invention is to provide a process for removing air bubbles on the panel.

In order to achieve the above purpose, the pressurized degassing system and process method provided by the present invention can be summarized as follows.

Among them, the pressure defoaming system includes:

a plurality of furnace bodies for accommodating a plurality of panels;

A plurality of connecting pipes connected in parallel are used to respectively connect to the plurality of furnace bodies, and each connecting pipe has a connecting gas valve; and

a gas collecting pipe with a gas collecting valve for connecting the plurality of connecting pipes;

Wherein, the plurality of furnace bodies at least include an nth furnace body and an n+1th furnace body, and the plurality of parallel connecting pipes at least include an nth connecting pipe and an n+1th connecting pipe, and the nth connecting pipe The pipe is used to connect to the nth furnace body, the n+1th connecting pipe is used to connect to the n+1th furnace body, the nth connecting pipe and the n+1th connecting pipe are connected by the gas collecting pipe, and n is an integer greater than zero.

The system also includes at least one mechanical arm for putting the plurality of panels into the furnace body.

The system, wherein the plurality of panels are accommodated in at least one panel cassette.

Said system, wherein the plurality of panels are housed in the same panel cassette or different panel cassettes, and the panel cassettes are placed in the furnace body.

Said system, wherein the panel is a glass substrate, a plastic substrate, or a silicon substrate.

Said system, wherein the furnace body is a closed chamber.

The process method of removing panel air bubbles of the present invention comprises the following steps:

(a) Provide a system for removing air bubbles in panels, and the system includes: at least one first furnace body and second furnace body, at least one parallel first connecting pipe and second connecting pipe, and a gas collecting valve The gas collecting pipe, wherein, the parallel connecting pipes are respectively connected to the plurality of furnace bodies, each connecting pipe has a connecting gas valve; and the gas collecting pipe is connected to the plurality of connecting pipes to communicate with the plurality of furnace bodies;

(b) placing at least one panel in the first furnace body;

(c) passing a high-pressure gas into the first furnace body, and heating the first furnace body to a preset temperature and maintaining a preset pressure;

(d) After a preset process time of the first furnace body, the first furnace body is communicated with the second furnace body through the gas collecting pipe;

(e) close the connecting gas valve connected to the second furnace body to pressurize and heat the second furnace body to the preset pressure and the preset temperature, and open the gas collecting valve to eliminate the gas from the first furnace body residual gas; and

(f) Taking out the panel of the first furnace body.

The process method, wherein step (d) further includes: after a preset process time of the first furnace body, opening a connecting gas valve connected to the first connecting pipe of the first furnace body and a The connecting gas valve connected to the second connecting pipe of the second furnace body is used to communicate the first furnace body with a second furnace body through the gas collecting pipe.

Said process method, wherein the system further includes a third furnace body.

Described processing method, wherein step (e) also comprises the step:

(e1) After the preset process time of the second furnace body, the gas collecting pipe connects the second furnace body with the third furnace body;

(e2) Close the connecting gas valve on the third connecting pipe connected to the third furnace body to pressurize and heat the third furnace body to the preset pressure temperature, and open the gas collecting valve to discharge the second furnace residual gas from the body; and

(e3) Taking out the panel of the second furnace body.

The process method, wherein step (e1) further includes: opening the connecting gas valve connected to the second connecting pipe of the second furnace body and the connecting gas valve connected to the third connecting pipe of the third furnace body; Valve, and the second furnace body communicates with the third furnace body through the gas collecting pipe.

The process method, wherein the high-pressure gas is air, nitrogen, or argon.

The process method, wherein the preset temperature is between 40°C and 60°C.

The process method, wherein the preset pressure is between 3kg/cm ² and 8kg/cm ² .

The process method, wherein the preset process time is between 15 and 25 minutes.

In the process method, the system further includes at least one mechanical arm for placing the at least one panel into the furnace body.

In the process method, the plurality of panels are contained in at least one panel cassette.

The process method, wherein the plurality of panel cassettes are housed in the same panel cassette or different panel cassettes, and the panel cassettes are placed in the furnace body.

Said process method, wherein the panel is a glass substrate, a plastic substrate, or a silicon substrate.

Said process method, wherein the furnace body is a closed chamber.

The above overview is discussed in more detail below:

The pressurized degassing system of the present invention includes a plurality of furnace bodies for accommodating at least one panel, a plurality of parallel connection pipes for respectively connecting to the furnace body, and a collection for connecting the plurality of connection pipes trachea. Wherein, each connecting pipe has a connecting air valve, and the air collecting pipe has an air collecting valve.

In the pressurized degassing system of the present invention, the plurality of furnace bodies at least include an nth furnace body and an n+1th furnace body, and the plurality of parallel connecting pipes at least include an nth connecting pipe and an n+1th Connecting pipe. Wherein, the nth connecting pipe is used to connect to the nth furnace body, the n+1th connecting pipe is used to connect to the n+1th furnace body, and the nth connecting pipe is connected to the n+th 1 connecting tube. Here, n mentioned in the present invention is an integer greater than zero.

Therefore, compared with the traditional pressurized furnaces that operate independently, the pressurized degassing system of the present invention can utilize the improvement of parallel connection pipes to reuse process gas to reduce the use of high-pressure gas in the furnace and the cost of pressurization and heating. Time, and due to the cyclical operation between each furnace body, it not only saves the replacement time of the panel cassette, but also improves the overall process efficiency.

In order to simplify the traditional cassette carrying and conveying mechanism, to save the use space of the equipment and shorten the replacement time of the cassette, and to make maintenance easier, the system for removing air bubbles from the panel of the present invention may further include at least one mechanical arm to move at least one The panel is inserted into the furnace body. Certainly, the present invention can cooperate with the known panel cassette carrying and conveying mechanism to send the cassette carrying the panel into the pressurized defoaming system of the present invention.

The method of putting the panel into the furnace body mentioned in the present invention is not limited, and preferably can be directly placed into the furnace body, or the panel can be accommodated in at least one panel cassette and then placed into the furnace body. Moreover, the number of the panel cassettes placed in the furnace body of the present invention is not limited. Preferably, the panels can be accommodated in the same panel cassette or different panel cassettes.

The present invention also provides a process for removing bubbles from panels, which includes the steps of providing a pressurized defoaming system; placing at least one panel in the first furnace body; passing a high-pressure gas into the first furnace body, And heat the first furnace body to a preset temperature and maintain a preset pressure; after a preset process time of the first furnace body, the first furnace body is connected to the second furnace body through the gas collecting pipe; The connecting gas valve of the second furnace body is used to pressurize and heat the second furnace body to a preset pressure and preset temperature, and open the gas collecting valve to eliminate the remaining gas of the first furnace body; and take out the panel of the first furnace body.

The above-mentioned pressurized degassing system includes: at least a first furnace body and a second furnace body, at least a first connecting pipe and a second connecting pipe connected in parallel, and a gas collecting pipe with a gas collecting valve. Wherein, the parallel connecting pipes are respectively connected to each furnace body, and each connecting pipe has a connecting gas valve, so that each furnace body can independently control the external communication. Furthermore, the gas collecting pipe of the present invention is used to connect each parallel connecting pipe so as to connect each furnace body.

Therefore, compared with the independent operation mode of the traditional pressurized furnace body, the pressurized degassing system of the present invention can utilize the parallel connecting pipes to reuse the process gas, which not only reuses the waste gas to be discharged in the traditional process to Energy is saved, and the process time of pressurization and heating can be shortened to improve the overall process efficiency.

Furthermore, in the process method of removing panel air bubbles of the present invention, the step of introducing a gas can be any known method of introducing a high-pressure gas to the pressurized degassing furnace body, and preferably can be introduced into a gas collecting pipe of the present invention. High-pressure gas, or an independent ventilation pipe can be added in each furnace body to independently supply the high-pressure gas required by each furnace body.

In a preferred embodiment of the present invention, each furnace body of the present invention is provided with a vent pipe to respectively provide a high-pressure gas to each furnace body. Moreover, the present invention uses parallel connecting pipelines and the communication with the gas collecting pipe to transfer the waste gas after a process to another furnace body to be pressurized and heated, and the remaining process waste gas is discharged by using the gas collecting pipe. .

In addition, in the process of removing air bubbles in the panel of the present invention, the step (d) may further include: after a preset process time of the first furnace body, open a connection connected to the first connecting pipe of the first furnace body The gas valve and a connecting gas valve connected to the second connecting pipe of the second furnace body are used to communicate the first furnace body with the second furnace body through the gas collecting pipe.

In order to reduce energy consumption, the pressurized degassing system of the present invention may optionally include a third furnace body, and when the second furnace body reaches the preset process time, the gas collecting pipe can connect the second furnace body and the first furnace body The three furnace bodies are connected. Then, a connecting gas valve connected to the third connecting pipe of the third furnace body can be closed, so that the third furnace body can be pressurized and heated to a preset pressure temperature, and the gas collection valve can be opened to discharge the gas in the second furnace body. remaining gas. Finally, the de-bubbled panel in the second furnace body can be taken out. Wherein, the above-mentioned step of connecting the second furnace body and the third furnace body may further include: opening a connecting gas valve connected to the second connecting pipe of the second furnace body and a third connecting pipe connected to the third furnace body Connect the gas valve on the upper part, and the second furnace body can communicate with the third furnace body through the gas collecting pipe.

Furthermore, the high-pressure gas used in the process of removing bubbles from the panel of the present invention can be any gas, preferably air, nitrogen, or argon. Moreover, the preset temperature, preset pressure, or preset process time mentioned in the process method of the present invention are not subject to any restrictions, which can be based on the requirements of process conditions (for example: the number of panels, the volume and quantity of the reaction furnace body, etc.) ) and adjust with each other.

In a preferred aspect, the applicable temperature in the process of the present invention can be between 40°C and 60°C, and the preset temperature of the more preferable process can be about 50°C. In another preferred aspect, the preset pressure of the process of the present invention can be between 3kg/cm ² and 8kg/cm ² , and more preferably the preset pressure of the process can be about 5kg/cm ² . In yet another preferred aspect, the preset process time mentioned in the process of the present invention may range from 15 to 25 minutes, and more preferably may be about 20 minutes.

In addition, the panel used in the present invention is not limited, preferably a glass substrate, a plastic substrate, or a silicon substrate, and more preferably a substrate for a flat panel display. The furnace body mentioned in the present invention is not limited, and is preferably a pressurized or heatable sealed chamber.

The pressurized defoaming system of the present invention can be applied to the process equipment of a panel, which mainly uses high temperature and high pressure air to remove the residual air bubbles after the panel is attached to the polarizing film, so that the polarizing film can be more closely attached to the panel itself.

Description of drawings

Fig. 1 is a schematic diagram of the operating system of a known pressurized degassing furnace.

Fig. 2 is a schematic diagram of a pressurized degassing system in a preferred embodiment of the present invention.

Fig. 3 is a schematic pipeline diagram of a pressurized degassing system according to a preferred embodiment of the present invention.

Detailed ways

Example 1

Please refer to FIG. 2 . FIG. 2 is a schematic diagram of a pressurized degassing system 200 according to a preferred embodiment of the present invention. As shown in the figure, the pressurized degassing system 200 of this embodiment includes three pressurized degassing furnaces A1 , B1 , C1 ; and a robot arm 210 for carrying and transporting the panel cassette 260 . In this embodiment, the pressurized degassing system 200 is to put a panel cassette 260 into each pressurized degassing furnace body A1, B1, C1 by the mechanical arm 210, and the number of cassettes contained in the furnace body It is not limited to the number of cassettes described in this example.

Please refer to FIG. 3 , which is a schematic diagram of pipelines of the pressurized degassing system 200 of this embodiment. As shown in the figure, the pressurized degassing system 200 of this example includes a first furnace body A1, a second furnace body B1, a third furnace body C1, and a first connecting pipe connected to the first furnace body A1 220, a second connecting pipe 230 connected to the second furnace body B1, a third connecting pipe 240 connected to the third furnace body C1, a gas collecting pipe 250 for connecting each connecting pipe, and a parallel ventilation pipeline 270 , and a cylinder 280 for providing high-pressure gas. Wherein, the parallel ventilation pipeline 270 is respectively connected to each furnace body A1, B1, C1, and communicates with the gas cylinder 280, and each furnace body A1, B1, C1 has a ventilation valve 271, 272, 273 respectively, to independently Supply the high-pressure gas required by each furnace body. As shown in FIG. 3, the gas cylinder 280 includes a gas cylinder supply valve 281, which acts as a general on-off gas output. In addition, each connecting pipe 220 , 230 , 240 has a connecting gas valve 221 , 231 , 241 respectively, and the gas collecting pipe 250 also has a gas collecting valve 251 for controlling the gas in and out of the total system. In this embodiment, each furnace body A1 , B1 , C1 contains a panel cassette (not shown in the figure), and each cassette can accommodate a plurality of panels to be processed.

Here, the pressurized defoaming system 200 of this embodiment will be used to illustrate the process of removing air bubbles on the panel in this embodiment, please refer to FIG. 2 and FIG. 3 together. In addition, the process method of the present invention for removing air bubbles on the panel is not limited to the following content.

First of all, the pressurized degassing system 200 of this example is to send a panel cassette 260 full of panels into each pressurized degassing furnace body A1, B1, C1 respectively by a mechanical arm 210, and the pressurized degassing system 200 The connecting air valves 221 , 231 , 241 and the ventilation valves 271 , 272 , 273 on each of the inner connecting pipes 220 , 230 , 240 are all closed.

After the first furnace body A1 is put into a panel cassette 260, open the gas cylinder supply valve 281 and the vent valve 271 of the first furnace body A1 to send a high-pressure air into the first furnace body A1 and then close the vent valve 271 . Then the furnace body A1 is heated to about 50° C. and the pressure in the furnace is maintained at about 5 kg/cm ² . After the furnace body A1 has been processed for about 20 minutes to remove air bubbles on the panel, open the connecting gas valve 221 of the first furnace body A1 and the connecting gas valve 231 of the second furnace body B1, and connect the first furnace body A1 through the gas collecting pipe 250 It is connected to the second furnace body B1 to transfer half of the high-temperature and high-pressure air in the first furnace body A1 to the second furnace body B1. Next, close the connecting gas valve 231 of the second furnace body B1, and open the ventilation valve 272 of the second furnace body B1, and then close the ventilation valve 272 after supplementing the required gas in the second furnace body B1. Then raise the pressure and temperature of the second furnace body B1 to a process environment of 50°C and 5kg/cm ² to carry out the pressing of the second batch of panels; at the same time, open the gas collection valve 251 to eliminate half of the residual gas in the first furnace body A1 High-temperature and high-pressure air, that is, the panel from which bubbles have been removed in the first furnace body A1 can be taken out.

Therefore, the second furnace body B1 can save about 50% of energy, and avoid the energy-consuming process of repressurization and heating in the traditional method. In addition, the first furnace body A1 can send the next batch of panel cassettes into the furnace body by the robot arm 210 to continue the process of removing air bubbles.

After the panels in the cassette in the second furnace body B1 are pressed together, the second furnace body B1 is still connected to the third furnace body C1 by parallel pipelines, and half of the high temperature and high pressure in the second furnace body B1 The air is transferred to the third furnace body C1. Its flow process is the same as the communication mode between the first body of furnace A1 and the second body of furnace B1, and the process conditions of pressurized heating of the third body of furnace C1 are the same as the above-mentioned conditions, wherein the gas required to make up the third body of furnace C1 is The opening of a vent valve 273 is utilized. In this embodiment, the high-temperature and high-pressure gas after the process in the third furnace body C1 is supplied back to the first furnace body A1 to form a cyclic operating system. Please note that the method of providing a high-pressure gas to each furnace body in the present invention is not limited to the content described in this embodiment, and it can be independently supplied to each furnace body by parallel ventilation pipelines as in this example. Ways, or use the gas header as the pipeline for gas inlet and outlet, or even any known method of inputting a high-pressure gas to the pressurized degassing furnace body is applicable.

The three pressurized degassing furnaces A1, B1, and C1 contained in the pressurized degassing system 200 of this example can alternately exchange the high-temperature and high-pressure gas after the reaction according to the length of the process time, so as to save the need for pressurization and heating. energy. In this embodiment, when the processing time of each furnace body is about 20 minutes, when three furnace bodies are operated at the same time, one panel cassette can be processed every about 13 minutes.

The panel mentioned in this example is a panel for a TFT liquid crystal display, which mainly uses pressure and temperature to remove air bubbles generated after the polarizing film is bonded to the panel, so as to enhance the adhesion between the polarizing film and the panel substrate. Please note that the applicable panel of the present invention is not only the panel for TFT liquid crystal display described in this example, but also applicable to other types of flat display panels.

The above-mentioned embodiments are only examples for convenience of description, and the scope of rights claimed by the present invention should be based on the scope of the patent application, rather than limited to the above-mentioned embodiments.

Claims (20)

1. A pressurized defoaming system, comprising: a plurality of furnace bodies for accommodating a plurality of panels; A plurality of connecting pipes connected in parallel are used to respectively connect to the plurality of furnace bodies, and each connecting pipe has a connecting gas valve; and a gas collecting pipe with a gas collecting valve for connecting the plurality of connecting pipes; Wherein, the plurality of furnace bodies at least include an nth furnace body and an n+1th furnace body, and the plurality of parallel connecting pipes at least include an nth connecting pipe and an n+1th connecting pipe, and the nth connecting pipe The pipe is used to connect to the nth furnace body, the n+1th connecting pipe is used to connect to the n+1th furnace body, the nth connecting pipe and the n+1th connecting pipe are connected by the gas collecting pipe, and n is an integer greater than zero. 2. The system according to claim 1, comprising at least one robotic arm for placing the plurality of panels into the furnace body. 3. The system of claim 1, wherein the plurality of panels are accommodated in at least one panel cassette. 4. The system according to claim 3, wherein the plurality of panels are contained in the same panel cassette or different panel cassettes, and the panel cassettes are placed in the furnace body. 5. The system of claim 1, wherein the panel is a glass substrate, a plastic substrate, or a silicon substrate. 6. The system according to claim 1, wherein the furnace body is a closed chamber. 7. A process for removing panel air bubbles, comprising the following steps: (a) Provide a system for removing air bubbles in panels, and the system includes: at least one first furnace body and second furnace body, at least one parallel first connecting pipe and second connecting pipe, and a gas collecting valve The gas collecting pipe, wherein, the parallel connecting pipes are respectively connected to the plurality of furnace bodies, each connecting pipe has a connecting gas valve; and the gas collecting pipe is connected to the plurality of connecting pipes to communicate with the plurality of furnace bodies; (b) placing at least one panel in the first furnace body; (c) passing a high-pressure gas into the first furnace body, and heating the first furnace body to a preset temperature and maintaining a preset pressure; (d) After a preset process time of the first furnace body, the first furnace body is communicated with the second furnace body through the gas collecting pipe; (e) close the connection gas valve connected to the second furnace body to pressurize and heat the second furnace body to the preset pressure and the preset temperature, and open the gas collection valve to eliminate the gas from the first furnace body residual gas; and (f) Taking out the panel of the first furnace body. 8. The process as claimed in claim 7, wherein step (d) further comprises: after a preset process time of the first furnace body, opening a second furnace connected to the first furnace body A connecting gas valve on a connecting pipe and a connecting gas valve connected to a second connecting pipe of the second furnace body are used to communicate the first furnace body with a second furnace body through the gas collecting pipe. 9. The process according to claim 7, wherein the system further comprises a third body of furnace. 10. process as claimed in claim 7, is characterized in that, wherein step (e) also comprises step: (e1) After the preset process time of the second furnace body, the gas collecting pipe connects the second furnace body with the third furnace body; (e2) Close the connecting gas valve on the third connecting pipe connected to the third furnace body to pressurize and heat the third furnace body to the preset pressure temperature, and open the gas collecting valve to discharge the second furnace residual gas from the body; and (e3) Taking out the panel of the second furnace body. 11. The process as claimed in claim 10, wherein step (e1) further comprises: opening the connecting gas valve connected to the second connecting pipe of the second furnace body and a connecting gas valve connected to the third furnace The connecting gas valve on the third connecting pipe of the body, and the second furnace body communicates with the third furnace body through the gas collecting pipe. 12. The process according to claim 7, wherein the high-pressure gas is air, nitrogen or argon. 13. The process according to claim 7, wherein the preset temperature is between 40°C and 60°C. 14. The process as claimed in claim 7, wherein the predetermined pressure is between 3kg/cm ² and 8kg/cm ² . 15. The process according to claim 7, wherein the preset process time is between 15 and 25 minutes. 16. The process according to claim 7, wherein the system further comprises at least one mechanical arm for placing the at least one panel into the furnace body. 17. The process according to claim 7, wherein the plurality of panels are accommodated in at least one panel cassette. 18. The process according to claim 17, wherein the plurality of panel cassettes are contained in the same panel cassette or different panel cassettes, and the panel cassettes are placed in the furnace body. 19. The process according to claim 7, wherein the panel is a glass substrate, a plastic substrate, or a silicon substrate. 20. The process according to claim 7, wherein the body of furnace is a closed chamber.

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