JP2017076639A - Board developing system - Google Patents

Abstract

The present invention relates to a developing system for forming a circuit pattern by removing LPR ink that has not been cured in a printed circuit board (PCB) manufacturing process with a chemical solution, and transporting the substrate in a vertical state inside a developing chamber. While developing the process by uniformly injecting the chemical onto the substrate, the process proceeds continuously, while reducing the time required for the development process, and also injecting the chemical while transporting the substrate in a vertical state. Thus, a substrate development system is provided that further increases the process yield. A substrate development system according to the present invention includes a developing chamber realized as a sealed space in a frame, a conveying means for conveying a substrate in a vertical state in the inner space of the developing chamber, and a vertical in the inner space of the developing chamber. Spraying means for uniformly spraying the chemical liquid onto the substrate conveyed in a state; and pumping means for collecting the chemical liquid sprayed onto the substrate in the internal space of the developing chamber and pumping and supplying the chemical liquid to the spraying means. And the spraying means sprays the chemical liquid uniformly onto the substrate while moving up and down. [Selection] Figure 1

Description

  The present invention relates to a development system for forming a circuit pattern by removing LPR ink that has not been cured in a printed circuit board (PCB) manufacturing process with a chemical solution, and more specifically, development realized in a sealed form. A chamber, a transport unit that transports the substrate in a vertical state inside the developing chamber, an injection unit that uniformly sprays the chemical liquid onto the substrate transported in the vertical state, and a pumping unit that pumps and supplies the chemical liquid to the spray unit By carrying out the development process by spraying the chemical solution onto the substrate while transporting the substrate in a vertical state inside the development chamber, the time required for the development process is reduced while the process proceeds continuously. In addition, the present invention relates to a substrate development system in which a development process is performed by ejecting a chemical solution while transporting a substrate in a vertical state, thereby further increasing the process yield.

In general, a printed circuit board (PCB) is the most basic component of an electric / electronic product, and is a LCD TV, DVD, computer, notebook computer, digital camera, mobile phone, PDA, It has been widely applied to electrical and electronic products such as MP3, and its utilization is increasing more and more due to the rapid development of the digital system and the miniaturization, high density, and high functionality accompanying the advancement of semiconductor development.

The printed circuit board (PCB) manufacturing process is basically performed in the order of exposure (inner laser exposing), DF development (dry film developing), etching (etching), and stripping (stripping). Here, the exposure process is a process for forming a circuit, and after coating the exposure film on the LPR ink coated on the surface of the core, the necessary part (the LPR ink that has received UV) is irradiated with UV. ) Is photocured.

The DF developing process is a process in which a DF developer is left on the copper foil in a circuit pattern form to form a circuit. The etching process is performed by removing the copper foil in which the DF developer is not left. The stripping step is a step of removing the DF developer remaining on the copper foil using an alkali solution after the etching step.

Conventionally, a development system for removing a part other than a circuit pattern with a chemical solution in a development process is a general Dip type, in which a substrate (PCB) is immersed in a tank in which a solution (chemical solution) is stored, This is a system in which the development process is performed by removing portions other than the circuit pattern by the chemical action of the time chemical solution.

Therefore, in the conventional Dip type development system, the number of substrates that can be immersed in the chemical solution is limited according to the size of the tank, and the chemical action must be performed for a certain period of time. However, there is a problem that a large amount of chemical solution must be exchanged at a time when the chemical solution contained in the tank is exchanged.

Korean Patent Registration No. 10-1019154 Korean Patent Registration No. 10-1103767

The present invention has been devised in order to improve the problem that the development process and the yield of the process are remarkably lowered because the time required for the development process in the conventional substrate development system is long and the chemical solution is not uniformly ejected onto the substrate. The purpose of this is to carry out the development process by uniformly injecting the chemical solution onto the substrate while transporting the substrate in a vertical state inside the development chamber, while the process proceeds continuously. It is an object of the present invention to provide a substrate development system that shortens the time and performs the development process by ejecting a chemical solution while transporting the substrate in a vertical state and further improving the development efficiency and the process yield.

In order to achieve the above object, an embodiment of the present invention includes a developing chamber realized as a sealed space in a frame, a transport unit that transports a substrate in a vertical state in the inner space of the developing chamber, and an inner space of the developing chamber. Injecting means for uniformly injecting the chemical liquid onto the substrate conveyed in the vertical state, and pumping means for collecting the chemical liquid injected on the substrate in the internal space of the developing chamber and pumping and supplying the chemical liquid to the injection means The substrate developing system is characterized in that the injection means uniformly injects the chemical solution onto the substrate while moving up and down.

Further, in the embodiment of the present invention, the conveying means rotates in response to transmission of the driving force of the motor, and is placed on the plurality of driving rollers installed at regular intervals and placed on the plurality of driving rollers in a horizontal direction. And a plurality of clamps which are installed on the upper and lower portions of the jig and hold the substrate in a vertical state.

Further, in the embodiment of the present invention, the injection means has a rectangular frame shape, a frame constituted by a pair on both sides, and an injection tube attached to the frame at a certain vertical distance and having a number of nozzles, Guide rails installed vertically on both sides of the frame, a lifting roller rotatably installed on both sides of the frame and driven on the guide rails, and coupled to the upper part of the frame by a drive shaft And a drive unit that moves the drive shaft up and down to raise and lower the frame.

  According to the embodiment of the present invention, the developing chamber realized in a sealed form, the transporting means for transporting the substrate in the vertical state inside the developing chamber, and the chemical solution uniformly sprayed onto the substrate transported in the vertical state And a pumping means for pumping and supplying the chemical liquid to the injection means, and performing the developing process by spraying the chemical liquid onto the substrate while conveying the substrate in a vertical state inside the developing chamber, While the process proceeds continuously, there is an effect of reducing the time required for the development process.

Further, according to the embodiment of the present invention, the developing process is performed by uniformly injecting the chemical solution onto the substrate while the substrate is transported in the vertical state, so that the development efficiency and the process yield can be further increased while the developing chamber is used. Since the chemical liquid sprayed on the substrate is collected and filtered and then reused, there is an effect that the chemical liquid is used for a long time and is highly efficient.

It is a principal part side view which shows the installation state of this invention. It is a principal part front view which shows the installation state of this invention. It is a principal part side view which shows the conveyance means and injection means of this invention. It is a principal part side view which shows the conveying means of this invention. It is a principal part front view which shows the injection means of this invention. It is a principal part top view which shows the image development state of a board | substrate in this invention. It is a principal part front view which shows the descent | fall operation state of the injection means of this invention. It is a principal part front view which shows the raising operation state of the injection means of this invention.

Hereinafter, main configurations according to embodiments of the present invention will be described with reference to the accompanying drawings.

A developing chamber 10 realized as a sealed space in the frame 11, a transport unit 20 for transporting the substrate P in a vertical state in the inner space of the developing chamber 10, and a substrate transported in a vertical state in the inner space of the developing chamber 10 An injection means 30 for uniformly injecting the chemical liquid onto P; and a pumping means 40 for collecting the chemical liquid injected onto the substrate P in the internal space of the developing chamber 10 and pumping and supplying the chemical liquid to the injection means 30. The injection means 30 is characterized by uniformly injecting the chemical liquid onto the substrate P while moving up and down.

The embodiment of the present invention is a developing system that performs a developing process by injecting a chemical solution onto a substrate P while conveying the substrate P in a vertical state in the internal space of the developing chamber 10, as shown in FIGS. 1 and 2. The developing chamber 10, the conveying unit 20, the ejecting unit 30, and the pumping unit 40 are configured to collect and filter the chemical liquid ejected onto the substrate P in the developing chamber 10, and then to the ejecting unit 30 through the pumping unit 40. Supply and reuse.

In the main configuration of the embodiment, as shown in FIGS. 1 and 2, the developing chamber 10 is formed in a square frame shape on the frame 11 in the developing process, and is realized as a sealed space as much as possible. A transfer means 20 and an injection means 30 described later are provided in the internal space.

The developing chamber 10 has a predetermined length (2 to 5 m) so that the substrate P can be transported in one direction through the transporting unit 20 in a state realized as a sealed space as much as possible. A glass door can be installed so that the working state in 10 can be confirmed with the naked eye.

Further, in the main configuration of the embodiment, the transport unit 20 functions to transport the substrate P in the vertical state in the internal space of the developing chamber 10. As shown in FIGS. 1 to 4, the conveying means 20 rotates in response to the transmission of the driving force of the motor, and a large number of driving rollers 21 installed at regular intervals, and above the many driving rollers 21. The jig 23 is placed horizontally and is transferred horizontally, and a frame is formed vertically in the vertical direction, and a plurality of clamps 24 are provided on the upper and lower portions of the jig 23 to hold the substrate P in a vertical state. Is done.

A large number of shafts 22 are installed at the bottom of the developing chamber 10 so as to be rotatable at regular intervals, and a large number of drive rollers 21 are coupled and installed on both sides of the shaft 22 at a certain distance. When the driving force of the motor is transmitted from the driving unit 21a to the multiple shafts 22, the multiple driving rollers 21 are rotated by the driving of the motor.

On the other hand, the jig 23 has a base plate placed on the driving roller 21 and is transported horizontally on the driving roller 21, and a frame is formed vertically in the upper middle portion of the base plate. A large number of clamps 24 are installed on the upper part and the lower part, respectively.

The frame formed in the jig 23 has a square frame shape so that a space larger than the area of the substrate P is provided, and a number of clamps 24 that hold the substrate P vertically in the upper and lower portions of the frame. The clamp 24 is installed and holds the upper and lower edges of the substrate P so that the substrate P is placed in a space provided in the frame.

Therefore, the transport means 20 is configured such that the substrate P is held in a vertical state by a large number of clamps 24 and the jig 23 on which the clamps 24 are installed is transported horizontally on a large number of driving rollers 21. The substrate P is transported in a vertical state in the internal space of the developing chamber 10.

In the main configuration of the embodiment, the ejecting unit 30 functions to uniformly eject the chemical liquid onto the substrate P that is transported in the vertical state in the internal space of the developing chamber 10. As shown in FIGS. 1 to 3 and FIGS. 5 to 8, the ejection unit 30 has a rectangular frame shape, and a pair of frames 31 on both sides, and is attached to the frame 31 at regular intervals. The injection pipe 32 having a large number of nozzles 33, guide rails 34 installed vertically on both sides of the frame 31, and rotatably installed on both sides of the frame 31, ride on the guide rail 34. And a driving roller 36 that is coupled and installed on the upper portion of the frame 31 with a driving shaft 37 and moves the frame 31 up and down by moving the driving shaft 37 up and down.

The frame 31 has a rectangular frame shape so as to have a space larger than the area of the substrate P, and is separated from the developing chamber 10 by a certain distance on both sides of the substrate P conveyed in a vertical state. A jet pipe 32 having a plurality of nozzles 33 mounted at regular intervals is attached to the frame 31.

The injection pipe 32 is attached to the edges of both sides across the inner space of the frame 31 at regular intervals, and is provided such that one side direction is inclined downward, and a chemical solution is supplied via a pumping means 40 described later. On the other hand, the chemical solution is sprayed as fine particles onto the substrate P through a large number of nozzles 33.

On the other hand, the guide rails 34 are vertically installed on the upper and lower brackets 34a on both sides of the frame 31 so as to be vertically arranged on both sides of the frame 31, and are separated from the both sides of the frame 31 by a certain distance. Installed.

The elevating roller 35 is mounted on both sides of the frame 31 up and down, is rotatably installed with a built-in bearing, and is driven up and down on guide rails 34 arranged vertically on both sides of the frame 31. Installed.

The drive unit 36 functions to reciprocate the frame 31 continuously in the vertical direction. A drive motor or a hydraulic or pneumatic cylinder can be applied to the drive unit 36, and the drive unit 36 is preferably installed on the outer upper portion of the developing chamber 10. . A drive shaft 37 that moves up and down in response to a drive force transmitted from the drive unit 36 is coupled to the upper portion of the frame 31.

The drive shaft 37 is installed perpendicularly to the frame 31 installed in the inner space of the developing chamber 10 from the side of the driving unit 36 installed on the outer upper side of the developing chamber 10, and is driven when the driving unit 36 operates. The shaft 37 operates up and down to move the frame 31 back and forth continuously. At this time, since the up-and-down rollers 35 are driven up and down on the guide rails 34 at both sides of the frame 31, the frame 31 moves up and down stably without shaking.

Therefore, in the injection means 30, the chemical liquid is pumped to the injection pipe 32 and injected from the nozzle 33 through the pumping means 40, which will be described later, with the frame 31 reciprocating continuously up and down by the operation of the drive unit 36. Thus, the chemical liquid can be uniformly sprayed on both side portions of the substrate P transported in the vertical state.

In the main configuration of the embodiment, the pumping means 40 has a function of pumping and supplying the chemical solution to the injection means 30. As shown in FIGS. 1 and 2, the pumping means 40 includes a tank 41, a water collection duct 42, a filter 43, and a pump 44, and collects the chemical solution sprayed onto the substrate P in the internal space of the developing chamber 10. The collected chemical solution is filtered through the filter 43 and then recycled for use.

The pumping means 40 is connected to the water collecting tank 42 a provided at the bottom of the developing chamber 10 so as to be inclined downward, the water collecting duct 42 connected to the water collecting tank 42 a, and the water collecting duct 42. The filter 43 and the tank 41, and a pump 44 for pumping the chemical solution stored in the tank 41 are included.

The water collecting tank 42a is provided at the bottom of the developing chamber 10 in the length direction, and is installed such that the central portion is inclined downward to collect the chemical solution. A water collecting duct 42 is coupled to the lower part of the water collecting tank 42 a and is installed outside the developing chamber 10. The water collecting duct 42 is sequentially connected to the filter 43 and the tank 41.

A pump 44 is connected to the tank 41 containing the chemical liquid by a pumping pipe, and the pump 44 pumps the chemical liquid stored in the tank 41 and supplies it to the injection pipe 32 of the injection means 30. It is preferable to connect the hose which is excellent in fluidity by moving up and down to the injection pipe 32.

Therefore, in the pumping means 40, the water collection tank 42 a collects the chemical liquid sprayed to the substrate P in the internal space of the developing chamber 10, and the collected chemical liquid flows into the filter 43 through the water collection duct 42 and becomes foreign matter. Is filtered and then stored in the tank 41, and the pump 44 pumps the chemical liquid stored in the tank 41, supplies it to the injection pipe 32, and injects it from the nozzle 33, so that the chemical liquid is recirculated and used. , Long use time and excellent efficiency.

In such an embodiment of the present invention, while the substrate is conveyed in the vertical state in the internal space of the developing chamber, the spray tube and the nozzle move continuously up and down to spray the chemical liquid uniformly on both sides of the substrate. The development process is continuously performed while shortening the time required for the development process and further improving the development efficiency and the process yield.

In the embodiment of the present invention, the chemical solution sprayed onto the substrate is collected in the internal space of the developing chamber, and the collected chemical solution is filtered through a filter, and then stored in a tank and recirculated for use. Therefore, the usage time of the chemical solution is very long and the efficiency is excellent.

As described above, the preferred embodiments of the present invention have been described. However, the present invention is not limited to these embodiments. Those skilled in the art to which the present invention pertains will understand that various modifications can be made without departing from the spirit of the invention.

DESCRIPTION OF SYMBOLS 10 Developing chamber 11 Frame 20 Conveyance means 21 Drive roller 22 Shaft 23 Jig 24 Clamp 30 Injection means 31 Frame 32 Injection pipe 33 Nozzle 34 Guide rail 35 Lifting roller 40 Pumping means 41 Tank 42 Water collection duct 42a Water collection tank 43 Filter 44 Pump

Claims (5)

A development chamber realized as a sealed space in the frame;
Transport means for transporting the substrate in a vertical state in the internal space of the developing chamber;
Spraying means for uniformly spraying a chemical onto a substrate transported in a vertical state in the internal space of the developing chamber;
Pumping means for collecting the chemical liquid sprayed onto the substrate in the internal space of the developing chamber and pumping and supplying the chemical liquid to the spraying means,
The substrate developing system according to claim 1, wherein the spraying unit uniformly sprays the chemical solution onto the substrate while moving up and down. The conveying means is
Rotating in response to the driving force of the motor, it is rotated, and a number of driving rollers installed at regular intervals and placed on the driving rollers are transported horizontally, and the frame is configured vertically and vertically. 2. The substrate development system according to claim 1, wherein the substrate development system is configured by a jig and a plurality of clamps that are installed at an upper part and a lower part of the jig and hold the substrate in a vertical state. The injection means
The frame has a quadrangular frame shape and is configured with a pair of both sides, a jet pipe having a large number of nozzles attached to the frame at a certain vertical distance, and vertically installed on both sides of the frame. A guide rail, a lifting roller rotatably installed on both sides of the frame and driven on the guide rail; and a drive shaft connected to the upper part of the frame by a drive shaft; The substrate development system according to claim 1, further comprising a drive unit that raises and lowers the frame. The frame is formed in a square frame shape so that a space larger than the area of the substrate is provided, and is configured as a pair in the internal space of the developing chamber so as to be spaced apart at a certain distance on both sides of the substrate, The said injection pipe is provided so that one side direction may incline below, and it is attached to the edge part of both sides across the inner space of the said frame at the fixed up-down direction. Substrate development system. The pumping means includes a water collecting tank provided at the bottom of the developing chamber so as to be inclined downward, a water collecting duct connected to the water collecting tank, a filter and a tank connected to the water collecting duct, The substrate development system according to claim 1, further comprising: a pump for pumping the chemical liquid stored in the tank.

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