JP7122606B2 - Thermocompression bonding apparatus and thermocompression bonding method - Google Patents

Description

TECHNICAL FIELD The present invention relates to a thermocompression bonding apparatus and a thermocompression bonding method for thermocompression bonding a component to a substrate.

Conventionally, ACF (Anisotropic Conductive Film) tape, which is an anisotropic conductive member, is attached to the edge of the substrate as an adhesive member, and electronic components such as drive circuits (hereinafter simply referred to as (referred to as "components"), and includes a thermocompression bonding apparatus for thermocompression bonding the components to the board on which the components are mounted (see, for example, Patent Document 1).

In addition, there is a component mounting line that heats the substrate when the component is thermocompression bonded to the substrate via ACF in order to reduce color unevenness when the liquid crystal panel displays an image (see, for example, Patent Document 2). .

JP 2016-186966 A JP 2017-111310 A

In a component mounting line that produces liquid crystal panels, when the board is heated when the component is pressed onto the board via the ACF, if the component mounting line stops due to some kind of failure, the temperature of the heating unit that heats the board suddenly drops. does not drop and the substrate remains heated. Therefore, parts such as the ACF and the polarizing plate are degraded by heat, and the produced liquid crystal panel may be defective.

The present invention provides a thermocompression bonding apparatus and the like that suppress the occurrence of defective products.

A thermocompression bonding apparatus according to an aspect of the present invention is a thermocompression bonding apparatus for a component mounting line having the thermocompression bonding apparatus for thermocompression bonding a component to a substrate, the thermocompression bonding apparatus comprising a transport unit for transporting the substrate, a heater, and a stage on which the substrate transported by a unit is placed; a thermocompression bonding unit that thermally compresses components onto the substrate placed on the stage; and the stage on which the substrate is heated by the heater by the transport unit. and a control unit that causes the thermocompression bonding unit to thermally bond the component to the substrate placed on the stage, wherein the control unit controls the thermocompression bonding device. When receiving another device abnormality signal indicating an abnormality of a device of the component mounting line except for the component mounting line, the component is thermocompression bonded to the substrate by the thermocompression bonding unit, and then the substrate is removed from the stage by the transfer unit. Then, the thermocompression bonding device is stopped.

Further, a thermocompression bonding method according to an aspect of the present invention is a thermocompression bonding method executed by a thermocompression bonding apparatus in a component mounting line including a thermocompression bonding apparatus for thermocompression bonding a component to a substrate, wherein the substrate is transported by a transport unit. a placing step of placing the component on a stage heated by a heater; and a thermocompression bonding step of thermocompression bonding the component to the substrate placed on the stage. In the case where the other device abnormality signal indicating the abnormality of the device of the component mounting line is received, after completing the thermocompression bonding process, the substrate is separated from the stage by the transfer section, and furthermore, the thermal Stop the crimping device.

In addition, these general or specific aspects may be realized by a system, method, integrated circuit, computer program, or a recording medium such as a computer-readable CD-ROM. and any combination of recording media.

ADVANTAGE OF THE INVENTION According to this invention, the thermocompression-bonding apparatus etc. which suppress generation|occurrence|production of a defective product can be provided.

FIG. 1 is a plan view showing a component mounting line according to the embodiment. FIG. 2 is a schematic configuration diagram showing a component mounting line according to the embodiment. FIG. 3 is a block diagram showing the functional configuration of a component mounting line including the thermocompression bonding apparatus according to the embodiment. FIG. 4 is a perspective view showing the main crimping portion according to the embodiment. FIG. 5 is a side view for explaining a final crimping step performed by the final crimping unit according to the embodiment. FIG. 6 is a side view for explaining a final crimping step performed by the final crimping unit according to the embodiment. FIG. 7 is a flowchart for explaining a processing procedure of operations performed by the thermocompression bonding apparatus according to the embodiment.

A thermocompression bonding apparatus and the like according to embodiments of the present invention will be described below in detail with reference to the drawings. It should be noted that each of the embodiments described below is a specific example of the present invention. Therefore, the numerical values, shapes, materials, components, arrangement and connection of components, steps and order of steps, etc. shown in the following embodiments are examples and are not intended to limit the present invention. Therefore, among the constituent elements in the following embodiments, constituent elements that are not described in independent claims representing the highest level concept of the present invention will be described as optional constituent elements.

Each figure is a schematic diagram and is not necessarily strictly illustrated. Moreover, in each figure, the same code|symbol is attached|subjected about the same component.

In addition, in this specification and drawings, the X-axis, Y-axis, and Z-axis represent three axes of a three-dimensional orthogonal coordinate system. The X-axis and the Y-axis are orthogonal to each other and both orthogonal to the Z-axis. Further, in the following embodiments, the X-axis positive direction of the substrate transfer direction may be referred to as the upward direction, the Z-axis positive direction may be referred to as the upward direction, and the Z-axis negative direction may be referred to as the downward direction.

(Embodiment)
[Constitution]
First, with reference to FIGS. 1 to 3, an outline of a thermocompression bonding apparatus according to an embodiment will be described.

FIG. 1 is a plan view of a component mounting line 1 according to the embodiment. FIG. 2 is a schematic configuration diagram of the component mounting line 1 according to the embodiment. FIG. 3 is a block diagram showing the functional configuration of the component mounting line 1 including the thermocompression bonding apparatus 100 according to the embodiment.

A component mounting line 1 is a component mounting system for producing liquid crystal panels and the like, and has a thermocompression bonding apparatus 100 for thermocompression bonding electronic components such as drive circuits (hereinafter referred to as components 5 ) to substrates 3 . Specifically, the component mounting line 1 adheres an anisotropic conductive member (ACF) 6 such as ACF (Anisotropic Conductive Film) to a substrate 3 on which an electrode portion 4 is formed, and attaches the substrate 3 via the ACF 6 . It is a device for thermocompression bonding with the component 5 .

The component mounting line 1 includes a substrate loading section 10 , a bonding section 20 , a temporary pressure bonding section 30 , a final pressure bonding section 40 , a substrate unloading section 50 , a transfer section 60 and a computer 2 . Although illustration of the computer 2 is omitted in FIG. 1, the computer 2 is communicably connected to each device such as the adhering section 20, the temporary pressure-bonding section 30, and the main pressure-bonding section 40 through a control line or the like. and controls each device.

The board loading section 10, the sticking section 20, the temporary pressure bonding section 30, the final pressure bonding section 40, and the substrate unloading section 50 are connected in this order. A component mounting line 1 mounts a component 5 on each of a plurality of electrode portions 4 provided on the periphery of a rectangular substrate 3 such as a liquid crystal panel substrate carried in from an upstream substrate loading section 10 where the substrate 3 is transported. Then, the board 3 on which the component 5 is mounted is unloaded from the board unloading section 50 . Each of the plurality of electrode portions 4 is composed of, for example, a plurality of electrodes.

The substrate loading unit 10 includes a base 1a for placing the substrate 3 to be loaded. A stage 11 on which the substrate 3 is placed is provided on the base 1a of the substrate loading section 10 . The stage 11 moves up and down in the Z-axis direction with respect to the base 1a. In addition, a plurality of suction holes 11a are provided on the upper surface of the stage 11, and the substrate 3 carried in from an operator or another apparatus on the upstream side and placed on the stage 11 is moved by a pump (not shown) or the like. It is held by vacuum suction from the suction hole 11a by a suction device.

The sticking unit 20 has a function of performing a sticking operation (in other words, a sticking step) of sticking the ACF 6 as an adhesive member to the electrode part 4 of the substrate 3 . The sticking section 20 includes a substrate moving mechanism 21 and a sticking mechanism 22 .

The substrate moving mechanism 21 is a mechanism for moving the substrate 3 . The substrate moving mechanism 21 includes, for example, an X-axis table movable in the X-axis direction, a Y-axis table movable in the Y-axis direction, a Z-axis table movable in the Z-axis direction, and a stage 23 . The substrate moving mechanism 21 has an X-axis table movable in the X-axis direction, a Y-axis table movable in the Y-axis direction, a Z-axis table movable in the Z-axis direction, a stage, and a stage. 23 are superimposed on each other.

The Y-axis table extends in the Y-axis direction and freely moves in the X-axis direction on the X-axis table. The Z-axis table moves freely in the Y-axis direction on the Y-axis table, and raises and lowers the stage 23 provided on the top in the Z-axis direction and rotates it around the Z-axis.

A plurality of suction holes 23a are provided on the upper surface of the stage 23, and the substrate 3 placed on the stage 23 is held by vacuum suction. In this way, the substrate moving mechanism 21 sucks and holds the substrate 3, moves it in the horizontal plane (specifically, the X-axis direction and the Y-axis direction), and moves it in the vertical direction (specifically, the Z-axis direction). It is raised and lowered and rotated around the Z-axis.

The sticking mechanism 22 has a plurality of sticking heads arranged in the X-axis direction above the base 1b. In this embodiment, the sticking mechanism 22 has two sticking mechanisms. Each sticking head has a supply section for supplying the ACF 6 and a sticking tool for sticking the ACF 6 to the substrate 3 . A plurality of sticking heads stick the ACF 6 to positions corresponding to the plurality of electrode portions 4 on the substrate 3 . In addition, at lower positions corresponding to each of the plurality of sticking heads, respective sticking supports are provided. The downstream sticking head and sticking support are integrally moved in the X-axis direction by a head moving mechanism having a head moving motor.

The temporary pressure-bonding unit 30 performs a temporary pressure-bonding step of mounting the component 5 on the area to which the ACF 6 is adhered and temporarily pressure-bonding it. The temporary pressure-bonding section 30 includes a substrate moving mechanism 31 , a component mounting mechanism 32 , and a component supply section 33 .

The substrate moving mechanism 31 has a structure similar to that of the substrate moving mechanism 21 of the sticking unit 20, and has functions of sucking and holding the substrate 3, moving it in a horizontal plane, raising and lowering it in the vertical direction, and rotating it around the Z axis. . A plurality of suction holes 37a are provided on the upper surface of the stage 37, and the substrate 3 placed on the stage 37 is held by vacuum suction.

The component mounting mechanism 32 is provided on the base 1 b and includes a mounting head 34 , a mounting head moving mechanism 35 and a mounting support base 36 . The mounting head 34 is freely moved in a horizontal plane by a mounting head moving mechanism 35, moves up and down in the Z-axis direction, and sucks (that is, picks up) the component 5 supplied by the component supply unit 33 from above. The substrate moving mechanism 31 positions the area of the substrate 3 to which the ACF 6 is adhered above the mounting support table 36 . The component mounting mechanism 32 temporarily crimps the component 5 onto the substrate 3 by mounting the sucked component 5 on the ACF 6 and pressing the component 5 together with the substrate 3 against the mounting support base 36 . The temporary pressure-bonding unit 30 may include a mechanism for rotating the direction of the substrate 3 held by the substrate moving mechanism 31 by 90 degrees.

The component supply unit 33 is provided behind the component mounting mechanism 32 (positive direction of the Y axis) and protrudes from the rear portion of the base 1 b to supply the component 5 to the component mounting mechanism 32 .

The final compression bonding section 40 performs a final compression bonding process (that is, a thermocompression bonding process) for performing final compression bonding (that is, thermocompression bonding) of the component 5 that has been temporarily crimped to the substrate 3 by the temporary compression bonding section 30 to the substrate 3 . By doing so, the electrode portion 4 formed on the substrate 3 and the component 5 are electrically connected via the ACF 6 . A specific configuration of the main crimping portion 40 will be described later.

The substrate unloading unit 50 has a function of holding the substrate 3 transported from the main pressure bonding unit 40 on the stage 51 by vacuum adsorption. The substrate 3 held in the substrate unloading section 50 is unloaded to another device on the downstream side, or is unloaded from the stage 51 by an operator.

The stage 51 moves up and down in the Z-axis direction with respect to the base 1c. Further, a plurality of suction holes 51a are provided on the upper surface of the stage 51, and the substrate 3 transferred from the main pressure bonding section 40 is held on the stage 51 by vacuum suction. The substrate 3 held in the substrate unloading section 50 is unloaded to another device on the downstream side, or is unloaded from the stage 51 by an operator.

The transport unit 60 is a device that transports the substrate 3 . Specifically, the transport unit 60 transports the substrate 3 carried into the substrate carrying-in unit 10 to predetermined working units in this order from the bonding unit 20 , the temporary pressure bonding unit 30 , the main pressure bonding unit 40 , and the substrate unloading unit 50 . It has a function of delivering (transferring) the substrate 3 between them. The conveying section 60 is arranged in front regions (Y-axis negative direction side) of the adhering section 20 , the temporary pressure-bonding section 30 , and the main pressure-bonding section 40 .

The transport unit 60 has a substrate transport mechanism 62A, a substrate transport mechanism 62B, and a substrate transport mechanism 62C arranged in order from the upstream side on a moving base 61 extending in the X-axis direction over the bases 1a, 1b, and 1c. , and a substrate transfer mechanism 62D.

Each of the substrate transfer mechanisms 62A-62D comprises a base 63 and one or more arm units 64. As shown in FIG. In this embodiment, the case where each of the substrate transport mechanisms 62A to 62D includes two arm units 64 is illustrated.

The base 63 is provided on the moving base 61 and freely moves in the X-axis direction. Two arm units 64 are provided side by side in the X-axis direction on the base portion 63 . The arm unit 64 is provided with one or more arm-shaped suction nozzles 64a (see FIG. 4) extending horizontally rearward and arranged side by side in the X-axis direction. (see FIG. 4) is provided. In this embodiment, the arm unit 64 has two suction nozzles 64a, and each of the substrate transfer mechanisms 62A to 62D has two suction pads 65, respectively.

The arm unit 64 vacuum-sucks the substrate 3 from above via a total of four suction pads 65 provided on two suction nozzles 64a.

Each of the substrate transfer mechanisms 62A to 62D moves the substrate 3 held by the stages 11, 23, 37, 49, 51 to a substrate transfer position where the substrate 3 is vacuum-sucked from above, and raises and lowers the stages 11, 23, 37, 49, The substrate 3 is received or delivered from 51 . For example, the substrate transport mechanism 62A receives the substrate 3 placed on the stage 11 of the substrate loading section 10 and transfers it to the stage 23 of the bonding section 20 . Also, for example, the substrate transport mechanism 62B receives the substrate 3 from the stage 23 of the bonding section 20 and transfers it to the stage 37 of the temporary pressure bonding section 30 . Also, for example, the substrate transport mechanism 62</b>C receives the substrate 3 from the temporary pressure bonding section 30 and transfers it to the stage 49 of the final pressure bonding section 40 . Further, for example, the substrate transport mechanism 62D receives the substrate 3 from the stage 49 of the main pressure bonding section 40 and transfers it to the stage 51 of the substrate unloading section 50 .

The computer 2 is a control device for controlling the operation of each device of the thermocompression bonding device 100 and the component mounting line 1 . The computer 2 includes a control section 2a and a storage section 2b.

The storage unit 2b stores the size of the substrate 3 such as the liquid crystal panel substrate manufactured by the component mounting line 1, the type of the component 5 to be mounted on the substrate 3, the mounting position, the mounting direction, and the timing of transferring the substrate 3 between the work units. Various data required for component mounting work such as, control programs executed by the control unit 2a, and the like are stored. The storage unit 2b is implemented by a ROM (Read Only Memory), a RAM (Random Access Memory), or the like.

The control unit 2a controls the substrate moving mechanism 21 of the sticking unit 20, the substrate moving mechanism 31 of the temporary pressure bonding unit 30, the substrate moving mechanism 41 of the final pressure bonding unit 40, and the transfer unit 60 to move the substrate 3 between the working units. , the substrate is transferred to the next process. Transfer of the substrate 3 from the upstream side to the downstream side in the substrate transfer work is performed synchronously between the work units.

For example, the control unit 2a controls the sticking unit 20 to change the orientation and position of the substrate 3 held by the substrate moving mechanism 21, change the intervals between the multiple sticking heads by the head moving motor, and The attaching unit 20 is caused to perform the attaching operation of attaching the ACF 6 to the substrate 3 by the attaching mechanism 22 .

Further, for example, the control unit 2a controls the temporary pressure-bonding unit 30 to change the orientation and position of the substrate 3 held by the substrate moving mechanism 31, and the component 5 supplied from the component supply unit 33 to the component mounting mechanism. 32 is temporarily pressure-bonded to the substrate 3 .

Further, for example, the control unit 2 a controls the main pressure bonding unit 40 to change the orientation and position of the substrate 3 held by the substrate moving mechanism 41 , and the part 5 temporarily pressure bonded to the substrate 3 by the thermocompression bonding unit 42 . are fully crimped.

The control unit 2a is, for example, a control program stored in the storage unit 2b for controlling each device included in the thermocompression bonding apparatus 100 and the component mounting line 1, and a CPU (Central Processing Unit) that executes the control program. Realized.

[Thermal compression bonding device]
<Configuration>
Next, a specific configuration of the thermocompression bonding apparatus 100 will be described with reference to FIGS. 3 and 4. FIG. More specifically, a specific configuration of the main compression bonding section 40 of the thermocompression bonding apparatus 100 will be described.

FIG. 4 is a perspective view showing the main crimping portion 40 according to the embodiment.

The thermocompression bonding apparatus 100 shown in FIG. 3 thermocompression bonds a component 5 to a substrate 3 via an ACF 6 temporarily bonded to an electrode portion 4 of a substrate 3 in a temporary compression bonding section 30 in a component mounting line 1 for producing a liquid crystal panel or the like. It is a device that

In this embodiment, the thermocompression bonding apparatus 100 is described as having the computer 2 , the main compression bonding section 40 and the transfer section 60 . In addition, the computer 2 (specifically, the control unit 2a) that controls each component of the thermocompression bonding apparatus 100 controls the bonding unit 20 other than the thermocompression bonding apparatus 100 of the component mounting line 1, the temporary compression bonding unit 30, and the like. The computer that controls each device may be the same or different.

As shown in FIG. 3, the main compression bonding section 40 includes a substrate moving mechanism 41, a thermocompression bonding section 42, and a heater 49b.

The substrate moving mechanism 41 has the same structure as the substrate moving mechanism 21 of the sticking unit 20. The stage 49 sucks and holds the substrate 3, moves it in a horizontal plane, raises and lowers it vertically, and rotates it around the Z axis. It has functions.

The stage 49 includes a heater 49b for heating the substrate 3, and is a table on which the substrate 3 transported by the transport unit 60 is placed. Specifically, the stage 49 is a table on which the substrate 3 to which the component 5 is temporarily crimped by the temporary crimping unit 30 by the conveying unit 60 (specifically, the substrate conveying mechanism 62C) is placed. A plurality of suction holes 49a are provided on the upper surface of the stage 49, and hold the substrate 3 placed on the stage 49 by vacuum suction.

Further, the stage 49 heats the substrate 3 by being heated by the heater 49b shown in FIG. The heater 49b only needs to be able to heat the substrate 3 placed on the stage 49, and its configuration and arrangement are not particularly limited. In this embodiment, the stage 49 is made of a metal member having thermal conductivity, the heater 49b is positioned inside the stage 49, and heats the substrate 3 via the stage 49. FIG. For example, when the substrate 3 is a substrate used for a liquid crystal panel, the substrate 3 is heated by the heater 49b in the main pressure bonding process, thereby reducing color unevenness when the liquid crystal panel displays an image. The temperature at which the heater 49b heats the substrate 3 is not particularly limited, but is, for example, 40.degree.

The thermocompression bonding section 42 thermocompression bonds the component 5 to the substrate 3 placed on the stage 49 via the ACF 6 . As shown in FIG. 4 , the thermocompression bonding portion 42 includes a compression bonding portion 43 and a compression support portion 44 .

The crimping portion 43 includes a plurality of crimping units 45 that are adjustable in the X-axis direction with respect to the base portion 43a. In this embodiment, the case where the crimping portion 43 includes eight crimping units is exemplified. The crimping unit provided in the crimping portion 43 is not particularly limited.

The base portion 43a is provided with a pair of guide portions 43b extending in the X-axis direction. A plurality of rectangular plate-shaped mounting members 46 arranged in a vertical posture are attached to the guide portion 43b so as to be adjustable in the X-axis direction.

The crimping unit 45 includes a pressurizing mechanism 47 and a crimping head 48 .

The pressure mechanism 47 is attached to the attachment member 46 . The pressurizing mechanism 47 has a rod 47a that can be pushed up and down, and a crimping head 48 is provided at the lower end of the rod 47a.

A plurality of crimping heads 48 are arranged in a line above the crimping support 44 . By adjusting the crimping unit 45 to a desired position, the operator can change the interval between the crimping heads 48 according to the interval between the components 5 temporarily crimped to the substrate 3 .

Moreover, the crimping head 48 incorporates a heating section such as a heater, and is heated to a predetermined temperature by the heating section before the component 5 is crimped. The pressure bonding head 48 is driven by the pressure mechanism 47 to descend and press the component 5 mounted on the edge of the substrate 3 against the substrate 3 while heating the component 5 . At this time, the hardening of the ACF 6 is accelerated by heat generated from the pressure bonding head 48 .

Further, the final pressure-bonding unit 40 rotates the direction of the substrate 3 held by the substrate moving mechanism 41 by 90 degrees, and permanently pressure-bonds the component 5 temporarily pressure-bonded to the peripheral edge of the substrate 3 . The thermocompression bonding part 42 is not limited to the above configuration, and the number and shape of the compression bonding heads 48 (for example, the length in the X-axis direction ).

The control unit 2 a provided in the computer 2 causes the substrate 3 to be placed on the stage 49 heated by the heater 49 b by the transport unit 60 , and the component 5 is attached to the substrate 3 placed on the stage 49 by the thermocompression bonding unit 42 . Heat press.

Further, the controller 2a controls the component mounting line 1 except for the thermocompression bonding apparatus 100 until the thermocompression bonding between the substrate 3 and the component 5 is completed after the substrate 3 is placed on the stage 49, for example. When the other device abnormality signal indicating the abnormality of the device is received, the component 5 is thermocompression bonded to the substrate 3 by the thermocompression bonding unit 42, the substrate 3 is separated from the stage 49 by the transport unit 60, and further (specifically Specifically, the thermocompression bonding apparatus 100 is stopped after the substrate 3 is separated from the stage 49 by the transfer unit 60 .

Further, for example, when the controller 2a receives an own device abnormality signal indicating an abnormality of the thermocompression bonding apparatus 100 before the thermocompression bonding by the thermocompression bonding section 42, the component 5 is attached to the substrate 3 by the thermocompression bonding section 42. After the substrate 3 is separated from the stage 49 by the transfer unit 60 without being thermocompression bonded, the thermocompression bonding apparatus 100 is stopped.

For example, the computer 2 includes a communication section (not shown) serving as a communication interface for transmitting and receiving signals to and from the adhering section 20, the temporary pressure bonding section 30, the final pressure bonding section 40, the conveying section 60, and the like. Each device such as the sticking unit 20 , the temporary pressure bonding unit 30 , the main pressure bonding unit 40 , and the conveying unit 60 also includes a communication unit (not shown) that is a communication interface for transmitting and receiving signals to and from the computer 2 .

Further, for example, each device such as the adhering unit 20, the temporary pressure bonding unit 30, the main pressure bonding unit 40, and the conveying unit 60 includes a detection unit (not shown) that detects its own defect.

Here, the failure means that each device such as the sticking unit 20, the temporary pressure bonding unit 30, the main pressure bonding unit 40, the conveying unit 60, etc. has a failure such as disconnection, the substrate 3 is not in a predetermined position, etc. It is a defect that cannot operate and must be stopped.

For example, an abnormality in the devices of the component mounting line 1 other than the thermocompression bonding device 100 is an abnormality in the bonding section 20, the temporary compression bonding section 30, etc. Positional deviation of the bonding position, positional deviation of the mounting position of the component 5 in the temporary pressure bonding portion 30, and the like may be included. Note that the control unit 2a may receive another device abnormality signal from another device (not shown) included in the component mounting line 1 and execute control based on the received other device abnormality signal.

Further, for example, an abnormality of the thermocompression bonding device 100 is an abnormality of the main compression bonding portion 40, and a malfunction of the thermocompression bonding device 100 may include a malfunction such as the heater 49b not heating.

Further, the detection unit may be any one capable of detecting a defect, such as a sensor for detecting electrical continuity provided in each device, a sensor for detecting the position of the ACF 6 with respect to the substrate 3, the component 5, and the like. For example, the malfunction of the thermocompression bonding apparatus 100 may include a temperature sensor or the like that detects malfunction such as the heater 49b not heating. The communication unit provided in each device transmits an abnormality signal indicating the problem to the control unit 2a when the detection unit provided in each device detects a problem in itself. The control unit 2a controls each device included in the thermocompression bonding apparatus 100 based on the received signal.

<Main crimping process>
Next, with reference to FIGS. 5 and 6, a specific procedure of the final compression bonding process (thermal compression bonding process) performed by the final compression bonding section 40 will be described.

5 and 6 are side views for explaining the final pressure bonding process performed by the final pressure bonding section 40 according to the embodiment.

First, as shown in FIG. 5A, the stage 49 is moved below the arm unit 64 holding the substrate 3 . Specifically, the substrate 3 to which the component 5 is temporarily crimped via the ACF 6 by the temporary crimping unit 30 is sucked by the suction pad 65 arranged at the tip of the suction nozzle 64a provided in the substrate transport mechanism 62C shown in FIG. 1, for example. and is moved from the stage 37 of the temporary pressure-bonding section 30 to the transfer position of the final pressure-bonding section 40 . Then, the stage 49 of the main pressure bonding section 40 is moved below the transfer position where the substrate 3 is placed on the stage 49 . The stage 49 is heated by the heater 49b. The timing at which the controller 2a controls the heater 49b to heat the stage 49 is not particularly limited. Good to have.

Next, as shown in FIG. 5(b), the stage 49 moves upward.

Next, as shown in FIG. 5(c), the arm unit 64 releases the suction of the substrate 3 and places the substrate 3 on the stage 49. After that, the stage 49 with the substrate 3 placed thereon move to In other words, FIG. 5(c) is a diagram showing a mounting process in which the thermocompression bonding apparatus 100 mounts the substrate 3 on the stage 49. As shown in FIG.

Next, as shown in (d) of FIG. 5, the stage 49 moves to the working position on the side of the pressure-bonding support portion 44 and the pressure-bonding head 48 (specifically, the Y-axis positive direction side). In the working position, the substrate 3, the component 5 and the ACF 6 are placed in the space between the crimping support 44 and the crimping head 48. FIG.

Next, as shown in FIG. 5(e), the stage 49 moves downward, and as shown in FIG. 5(f), the pressure bonding head 48 moves downward. By doing so, the substrate 3, the component 5 and the ACF 6 are sandwiched between the crimping support portion 44 and the crimping head 48, as shown in FIG. 5(g). That is, the component 5 is permanently pressure-bonded to the substrate 3 . 5(d) to 5(g) are diagrams showing the thermocompression bonding process in which the thermocompression bonding apparatus 100 thermocompresses the substrate 3 and the component 5 together.

Next, as shown in (h) of FIG. 6, the crimping head 48 moves upward. This moves the crimping head 48 away from the component 5 .

Next, as shown in (i) of FIG. 6, the stage 49 moves upward.

Next, as shown in (j) of FIG. 6, the stage 49 moves away from the pressure-bonding support portion 44 and the pressure-bonding head 48 (specifically, the Y-axis negative direction). Specifically, the stage 49 is moved by the substrate moving mechanism 41 from the working position to the delivery position where the arm unit 64 stands by. More specifically, in (j) of FIG. 6, for example, the stage 49 moves to below the arm unit 64 provided in the substrate transfer mechanism 62D shown in FIG.

Next, as shown in (k) of FIG. 6, the stage 49 moves upward, and the arm unit 64 attracts the substrate 3 .

Next, as shown in (l) of FIG. 6, the stage 49 moves downward.

Next, as shown in (m) of FIG. 6, the stage 49 moves in the positive direction of the Y-axis.

As a result, as shown in (n) of FIG. 6, the substrate 3 is returned to the same transfer position as shown in (a) of FIG. Further movement is started in order to place the substrate 3 on the .

The thermocompression bonding apparatus 100 continues the main compression bonding process by sequentially repeating the operations of FIGS. 5(a) to 6(n).

<Processing procedure>
Next, specific operations of the thermocompression bonding apparatus 100 will be described with reference to FIGS. 5 to 7. FIG.

First, it is assumed that the controller 2a receives a signal (step S101).

Next, the control unit 2a determines whether the signal received in step S101 is a self-apparatus abnormality signal indicating an abnormality in the thermocompression bonding apparatus 100 among the apparatuses of the component mounting line 1, or It is determined whether it is an abnormality signal indicating an abnormality in an apparatus other than the thermocompression bonding apparatus 100 among the apparatuses possessed by . Specifically, the control unit 2a determines whether or not the signal is an abnormality signal indicating an abnormality other than the thermocompression bonding apparatus 100 (step S102).

When the control unit 2a determines that the received signal is the other device abnormality signal (Yes in step S102), the main pressure bonding unit 40 continues the main pressure bonding process (step S103).

Next, when the main compression bonding process is completed (step S104), the controller 2a stops the operation of the thermocompression bonding device 100 (step S105).

In this way, when the control unit 2a receives an abnormality signal indicating an abnormality in a device of the component mounting line 1 other than the thermocompression bonding device 100, the thermocompression bonding unit 42 thermocompression bonds the component 5 to the substrate 3. After that, the substrate 3 is separated from the stage 49 heated by the heater 49b by the transfer section 60, and then the thermocompression bonding apparatus 100 is stopped.

According to such a configuration, even in a situation where a device of the component mounting line 1 other than the thermocompression bonding device 100 breaks down during the main compression bonding process, and the thermocompression bonding device 100 has to be stopped for restoration work or the like. , the substrate 3 can be separated from the stage 49 heated by the heater 49b. Therefore, the substrate 3 is kept placed on the stage 49 heated by the heater 49b, thereby avoiding deterioration due to continuous heating. As a result, according to the thermocompression bonding apparatus 100, the occurrence of defective products is suppressed. Further, for example, when the abnormality of the equipment of the component mounting line 1 is removed based on the abnormality signal and the component mounting line 1 is restarted, the equipment of the component mounting line 1 can be operated more efficiently. can.

In step S103, the controller 2a completes the main pressure bonding shown in FIG. 5(g) and moves the substrate 3 away from the stage 49. Specifically, the control unit 2a may stop the operation of the thermocompression bonding apparatus 100 after moving the substrate 3 to the state shown in (m) of FIG. 6, or the state shown in (n) of FIG. The operation of the thermocompression bonding apparatus 100 may be stopped after the substrate 3 is moved to , or the operation of the thermocompression bonding apparatus 100 may be stopped after the substrate 3 is moved to the stage 51 of the substrate unloading unit 50 .

On the other hand, the control unit 2a determines whether the received signal is an example of an abnormality signal and is a device abnormality signal indicating abnormality of the thermocompression bonding apparatus 100 (specifically, the main compression bonding unit 40). (step S106).

When the control unit 2a determines that the received signal is a self-device abnormality signal indicating an abnormality in the main crimping unit 40 (Yes in step S106), the main crimping unit 40 does not continue the main crimping step and executes it. The current pressure bonding process is interrupted (step S107).

Next, the controller 2a separates the substrate 3 from the stage 49 (step S108) and stops the operation of the thermocompression bonding apparatus 100 (step S105). Specifically, for example, after the substrate 3 is placed on the stage 49 by the transfer unit 60 shown in FIG. When the own apparatus abnormality signal is received, the substrate 3 is separated from the stage 49 by the transfer section 60 without thermocompression bonding the component 5 to the substrate 3 by the thermocompression bonding section 42, and then the thermocompression bonding apparatus 100 is stopped. . More specifically, in step S108, the control unit 2a controls the arm unit 64 and the stage 49 so that the arm unit 64 sucks the substrate 3 placed on the stage 49 and separates it from the stage 49. Let For example, in the states of (c) to (g) of FIG. 5, the control unit 2a controls the transport unit 110 (specifically, It controls the arm unit 64 and the substrate moving mechanism 41).

For example, in the state of (h) to (l) of FIG. 6, when the self-device abnormality signal is received, the control unit 2a puts the substrate 3 in the state of (m) of FIG. , the transport unit 110 (specifically, the arm unit 64 and the stage 49) may be controlled.

In steps S107 and S108, the controller 2a moves the substrate 3 away from the stage 49 without performing the main pressure bonding shown in (g) of FIG. should be stopped. Specifically, the control unit 2a may stop the operation of the thermocompression bonding apparatus 100 after moving the substrate 3 to the state shown in FIG. The operation of the thermocompression bonding apparatus 100 may be stopped after the movement. Alternatively, the component mounting line 1 may further have a stage for moving the board 3 from the stage 49 .

As described above, when the control unit 2a receives the device abnormality signal indicating an abnormality of the thermocompression bonding apparatus 100 before the thermocompression bonding by the thermocompression bonding unit 42, the component 5 is attached to the substrate 3 by the thermocompression bonding unit 42. After the substrate 3 is separated from the stage 49 by the transfer section 60 without being thermocompression bonded, the thermocompression bonding apparatus 100 is stopped.

According to such a configuration, the control unit 2a can control the heat generated by the heater 49b even in a situation where a device of the thermocompression bonding device 100 fails during the main compression bonding process and the thermocompression bonding device 100 has to be stopped. Substrate 3 can be separated from stage 49 . Therefore, the substrate 3 is kept placed on the stage 49 heated by the heater 49b, thereby avoiding deterioration due to continuous heating. As a result, according to the thermocompression bonding apparatus 100, the occurrence of defective products is suppressed.

In addition, the control unit 2a determines whether the received abnormality signal is a self-device abnormality signal indicating an abnormality in the thermocompression bonding apparatus 100 (specifically, the main compression bonding unit 40), or the received abnormality signal indicates that the thermocompression bonding apparatus 100 (specifically, the Specifically, the content of the control is appropriately changed depending on whether the signal indicates an abnormality other than the main crimping section 40). By doing so, for example, the control unit 2a removes the abnormality of the device of the component mounting line 1 that caused the abnormal signal, and when the component mounting line 1 is restarted, the component mounting can be performed more efficiently. Each device that line 1 has can be operated. For example, since the occurrence of defects in the substrate 3 can be suppressed, each device of the component mounting line 1 can be operated as it is without removing the substrate 3 that has already entered the thermocompression bonding process.

Note that when the control unit 2a determines that the received signal is not an own device abnormality signal indicating an abnormality of the main crimping unit 40 (No in step S106), the control unit 2a may perform control according to the signal. For example, in step S109, when the controller 2a receives an emergency stop signal indicating that all the devices of the component mounting line 1 should be stopped urgently, the controller 2a stops all the devices of the component mounting line 1. You may let

(Other embodiments)
As described above, the thermocompression bonding apparatus and the like according to the present embodiment have been described based on the above embodiment, but the present invention is not limited to the above embodiment.

For example, in the above embodiment, all or part of the components of the computer 2 may be configured with dedicated hardware, or implemented by executing a software program suitable for each component. good. Each component may be implemented by a program execution unit such as a CPU (Central Processing Unit) or a processor reading and executing a software program recorded in a recording medium such as a HDD (Hard Disk Drive) or a semiconductor memory. good.

Also, the components of the computer 2 may be composed of one or more electronic circuits. Each of the one or more electronic circuits may be a general-purpose circuit or a dedicated circuit.

One or more electronic circuits may include, for example, a semiconductor device, an IC (Integrated Circuit), or an LSI (Large Scale Integration). An IC or LSI may be integrated on one chip or may be integrated on a plurality of chips. Although they are called ICs or LSIs here, they may be called system LSIs, VLSIs (Very Large Scale Integration), or ULSIs (Ultra Large Scale Integration) depending on the degree of integration. An FPGA (Field Programmable Gate Array) that is programmed after the LSI is manufactured can also be used for the same purpose.

In addition, it can be realized by applying various modifications to each embodiment that a person skilled in the art can think of, or by arbitrarily combining the constituent elements and functions of each embodiment without departing from the spirit of the present invention. Forms are also included in the present invention.

INDUSTRIAL APPLICABILITY The present invention can be used in a thermocompression bonding apparatus in a component mounting line for producing liquid crystal panels.

REFERENCE SIGNS LIST 1 component mounting line 1a, 1b, 1c base 2 computer 2a control section 2b storage section 3 substrate 4 electrode section 5 component 6 anisotropic conductive member (ACF)
REFERENCE SIGNS LIST 10 Substrate loading section 11, 23, 37, 49, 51 Stage 11a, 23a, 37a, 49a, 51a Suction hole 20 Bonding section 21, 31, 41 Substrate moving mechanism 22 Bonding mechanism 30 Temporary pressure bonding section 32 Component mounting mechanism 33 Component supply unit 34 Mounting head 35 Mounting head moving mechanism 36 Mounting support base 40 Main pressure bonding unit 42 Thermal compression bonding unit 43 Pressure bonding unit 43a Base unit 43b Guide unit 44 Pressure bonding support unit 45 Pressure bonding unit 46 Mounting member 47 Pressure mechanism 47a Rod 48 Pressure bonding Head 49b Heater 50 Substrate Unloading Section 60 Transfer Section 61 Moving Base 62A, 62B, 62C, 62D Substrate Transfer Mechanism 63 Base 64 Arm Unit 64a Suction Nozzle 65 Suction Pad 100 Thermal Compression Bonding Device 110 Transfer Section

Claims (2)

A thermocompression bonding apparatus for a component mounting line having a thermocompression bonding apparatus for thermocompression bonding a component to a substrate,
a transport unit that transports the substrate;
a stage having a heater on which the substrate transported by the transport unit is mounted;
a thermocompression bonding unit for thermocompression bonding a component to the substrate placed on the stage;
a control unit that causes the transfer unit to place the substrate on the stage heated by the heater, and causes the thermocompression bonding unit to thermocompress the component to the substrate placed on the stage. a device,
The control unit
When receiving another device abnormality signal indicating an abnormality of a device of the component mounting line other than the thermocompression bonding device, the thermocompression bonding unit causes the component to be thermocompression bonded to the substrate, and then the substrate is transported. Separated from the stage by a part, and further stopping the thermocompression bonding device,
Thermo-compression equipment. A thermocompression bonding method executed by a thermocompression bonding apparatus in a component mounting line including a thermocompression bonding apparatus for thermocompression bonding a component to a substrate,
a placing step of placing the substrate on a stage heated by a heater by a transport unit;
a thermocompression bonding step of thermocompression bonding the component to the substrate placed on the stage;
After the mounting step, when receiving an abnormality signal indicating an abnormality in a device of the component mounting line other than the thermocompression bonding device, after completing the thermocompression bonding step, the substrate is mounted on the substrate as described above. Separated from the stage by a transport unit, and further stopping the thermocompression bonding device;
thermocompression method.

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