TW201623912A - Laminating position detecting apparatus - Google Patents

Abstract

The utility model provides an adherence position checking device, which is used to check an adherence position of a rectangular adherence object which is adhered to a baseplate by respectively making four edges parallel to four edges of the rectangular baseplate, and comprises a checking table which forms a carrying area to carry the baseplate adhered with the adherence object; four optical measurement units which are installed on the checking table and respectively faced with four corners of the base plate and the adherence object, wherein the distance between an edge of the adherence object and the edge of the baseplate parallel to the edge of the adherence object is respectively measured optically at the four corners; and a measurement result display unit which is connected to the four optical measurement units, wherein the distances measured respectively by the four optical measurement units are displaced as the measurement results. In this way, the distances between the edges of the adherence object and the edges of the baseplate parallel to the edges of the adherence object can be respectively measured optically at the four corners by the four optical measurement units, so that checking accuracy of the adherence position of the adherence object on the baseplate can be increased.

Description

Adhesive position inspection device

The present invention relates to an adhesive position inspection device.

Image display devices such as liquid crystal displays (LCDs), plasma display devices (PDPs), and electroluminescent displays (ELDs) have attracted attention for their excellent performance. For this reason, the manufacturing technology of the display panel which is an important component of the image display device has also been attracting attention.

In the manufacture of a display panel, in order to realize the display function of the display panel, it is necessary to adhere an optical film (for example, a polarizing film) to an optical element (for example, a liquid crystal cell). Here, the adhesion accuracy of the optical film is closely related to the display quality of the display panel to be a product. Therefore, after the optical film is adhered to the optical element, it is necessary to inspect the position of the optical film of the optical element.

For this reason, in Patent Document 1, a device that can realize such an inspection function is proposed. As shown in FIG. 8A and FIG. 8B, the display panel inspection device of Patent Document 1 includes an inspection table 11 having a display mounted thereon. a light transmitting portion 14 of the panel 40, a positioning portion 15 for positioning the two sides of the glass substrates 41 and 42 of the display panel 40 mounted thereon, and a glass substrate 41 for abutting against the positioning portion 15 The member 16 is measured from the distance from the periphery of 42 to the distance measured by the distance between the peripheral edges of the polarizing plates 44 and 45 of the glass substrates 41 and 42. In the measurement, as shown in FIG. 8B, the continuous sides of the peripheral edges 41a and 42a of the glass substrates 41 and 42 of the display panel 40 are respectively brought into contact with the inner surface 15a of the positioning portion 15. At this time, the distance L from the inner surface 15a of the positioning portion 15 to the front end 16c-1 of the measuring rod 16c coincides with the distance from the peripheral edge of the glass substrates 41 and 42 to the peripheral edge of the polarizing plates 44 and 45.

[Previous Technical Literature] [Patent Document]

[Patent Document 1] Japanese Invention Patent Publication 2008-014674A

However, the display panel inspection device disclosed in Patent Document 1 measures the adhesion position of the polarizing plate by mechanically pressing the measuring rod from the side surface, so that only the three corners of the side frame can be measured, and measurement accuracy exists. Deviation from the accuracy of the target.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide an adhesive position inspection apparatus which can be formed on a substrate of a rectangular laminate which is bonded to each other in parallel with the four sides of a rectangular substrate. The inspection accuracy of the pasting position is improved.

In order to achieve the above object, an object of the present invention is to provide a pasting position inspection apparatus which is formed by bonding a rectangular-shaped laminate which is bonded to four sides of a rectangular substrate on four sides. The inspection position is performed by: forming an inspection table for mounting a substrate on which the substrate of the laminate is placed; and attaching to the inspection table and facing the four corners of the substrate and the laminate; Four optical measuring units for optically measuring the distance between the edge of the laminate and the edge of the substrate parallel to the edge of the laminate at the four corners; and connecting to the four optical measuring units, A measurement result display unit displayed as a measurement result by the distance measured by each of the four optical measurement units.

According to the present invention, it is possible to provide an adhesive position inspection device which can use four optical measuring units to respectively form an edge of a laminate (for example, a polarizing film) and a substrate parallel to the edge of the laminate at four corners (for example, Since the distance between the edges of the glass substrate is optically measured, the position of the rectangular paste on which the four sides are bonded in parallel with the four sides of the rectangular substrate can be attached to the substrate. Check accuracy is improved.

Further, preferably, the cover member is further provided to be openable and closable in a front surface in the front-rear direction before the inspection table, and to open the placement region at the time of opening, and to cover the cover member of the placement region when closed, on the inspection table In the set area, four inspection holes are formed through the front and the back, and the four corners of the substrate and the laminate are respectively located in the range of four inspection holes, and four optical measurements are performed. The fixed units are respectively mounted on the front and rear faces in the front and rear directions of the inspection table, and are respectively opposed to the four inspection holes.

Thereby, the optical measuring unit is provided on the rear surface of the inspection table, so that interference with the optical measuring unit when the substrate to which the adhesive composition is attached is placed or taken out with respect to the inspection table can be prevented. Then, an openable and closable cover member is provided on the front surface of the inspection table so that the cover member can be closed during the inspection, and the measurement of the adhesive position of the adhesive composition using the optical measurement unit can be made more accurate.

Further, preferably, each of the four optical measuring units is disposed so as to face one of the four inspection holes, and is passed through the inspection hole to be used for the substrate and the laminate. a light source is disposed in a portion of the inspection hole to illuminate the light, and an image capturing means for imaging the substrate and the laminate when the light is emitted by the light source and reflected by the substrate and the laminate is provided; The imaging means and the measurement result display means are connected to calculate the distance between the edge of the composition and the edge of the substrate parallel to the edge based on the image captured by the imaging means, and the distance is sent to the measurement result display. The image processing means of the unit.

Thereby, the image of the substrate and the laminate can be imaged by the light from the light source by the image capturing means, so that the distance between the edge of the laminate and the edge of the substrate can be accurately measured.

Further, preferably, the imaging means is provided on a side opposite to the inspection hole with the light source interposed therebetween.

Further, preferably, in the pasting position inspection device, one of the four inspection holes is formed as a circular hole, and the adjacent one of the circular holes The two inspection holes are formed such that the growth direction is perpendicular to each other and the extension line passes through the long hole of the circular hole, and the inspection hole at the diagonal position of the circular hole is inclined with respect to the other two inspection holes and the extension line passes. The long hole of the round hole and the inspection table are provided with a rail mechanism in the vicinity of each of the inspection holes for the long hole, and the optical measuring unit facing the inspection hole for the long hole is suitable for each of the corresponding The rail mechanism that moves in the direction of the long side of the inspection hole is slidably mounted.

Thereby, the optical measuring unit can be moved to an appropriate position depending on the size of the substrate and the laminate, so that the same substrate can be measured with the same adhesive position inspection device.

Further, preferably, in the pasting position inspection device, the inspection hole is provided with a rail mechanism in the vicinity of the inspection hole which is a circular hole, and the optical measurement unit opposed to the inspection hole which is a circular hole is in the range of the circular hole The rail mechanism is mounted to be slidable in a manner of internal movement.

Thereby, the optical measuring unit in the vicinity of the circular hole can be moved to the optimum measurement position depending on the adhesion position of the adhesive composition of the substrate.

In addition, it is preferable that the inspection table further includes a drive unit that is provided corresponding to each rail mechanism and that drives the corresponding optical measurement unit to move along the rail mechanism, and further includes optical The control unit of the drive unit is controlled by the manner in which the measurement unit moves to the desired position.

Thereby, the optical measuring unit can be automatically moved to a position where the size of the substrate is matched by the driving unit, so that the inspection efficiency can be improved.

Moreover, preferably, the cover member is passed through the hinge at the inspection table. Installed to open and close.

As a result, it is possible to open and close the mounting area of the inspection table with a simple structure.

Further, preferably, the adhesive position inspection device is configured to include a slide rail on one side of the inspection table and the cover member, and a slider and a cover member on the other side to mount the slider with respect to the slide rail. Relative sliding makes it possible to open and close relative to the inspection table.

Thereby, it is possible to open and close the mounting area of the inspection table with a simple structure.

Further, preferably, in the pasting position inspection device, a mounting frame that faces the inspection table and is spaced apart from the front surface of the inspection table by a predetermined interval is provided on the front surface of the inspection table, and four optical measuring units are provided. They are attached to the inspection table through the mounting frame.

Thereby, the procedure for inspecting the inspection hole at the inspection table can be omitted, and the inspection can be performed without the need for the cover member, so that the structure can be simplified.

5‧‧‧Support frame

6‧‧‧Checkpoint

7‧‧‧Cleaning pieces

8‧‧‧Optical measurement unit

9‧‧‧ Hinges

60, 61‧‧‧ positioning plate

62, 63, 64, 65‧ ‧ inspection holes

66, 67, 68, 69‧‧‧ linear guides (rail mechanism)

66 ' , 67 ' , 68 ' , 69 ' ‧ ‧ adjustment motor (drive unit)

80‧‧‧ Mounting frame

81‧‧‧Circular light source (light source)

82‧‧‧CCD camera (camera means)

83‧‧‧Image processing means

C‧‧‧Substrate

F‧‧‧Flame

The distance between the edge of the L1, L2‧‧‧ substrate and the edge of the laminate parallel to the edge of the substrate

SD‧‧‧ operation panel

RD‧‧‧ display unit (measurement result display unit)

Fig. 1A is a front elevational view showing the pasting position inspection device according to the embodiment of the present invention, showing a state in which the cover member is opened.

Fig. 1B is a front elevational view showing the pasting position inspection device according to the embodiment of the present invention, showing a state in which the cover member is closed.

Fig. 2 is a front view showing the pasting position inspection device in a state in which a substrate is placed.

Fig. 3 is a side view showing the pasting position inspection device according to the embodiment of the present invention.

Fig. 4 is an explanatory view of the inspection table of the pasting position inspection device as seen from the rear side.

Fig. 5 is an explanatory view showing the construction of an optical measuring unit of the pasting position inspection device.

Fig. 6 is an explanatory view showing an image of a substrate on which a laminate is adhered, which is imaged by an annular illumination.

Fig. 7A is a flow chart showing the operation of the pasting position inspection device in the embodiment of the present invention.

Fig. 7B is a flow chart showing the operation of the pasting position inspection device in the embodiment of the present invention.

8A] Fig. 8A is an explanatory view showing a display panel inspection apparatus of the prior art.

8B] Fig. 8B is an explanatory view showing a display panel inspection apparatus of the prior art.

Hereinafter, the pasting position inspection apparatus according to the embodiment of the present invention will be described with reference to the drawings.

Further, in the present embodiment, the object to be inspected is a member in which the rectangular-shaped laminate F is adhered to the substrate C so that the four sides thereof are parallel to the four sides of the rectangular substrate C.

<Configuration of adhesive position inspection device>

1A and 1B are front views showing the pasting position inspection device according to the embodiment of the present invention, wherein FIG. 1A shows a state in which the cover member 7 is opened, and FIG. 1B shows a state in which the cover member 7 is closed. . Fig. 2 is a front elevational view showing the pasting position inspection device in a state in which the substrate C is placed. Fig. 3 is a side view showing the pasting position inspection device. Fig. 4 is an explanatory view of the inspection table 6 as seen from the rear side.

As shown in FIGS. 1A to 3, the pasting position inspection device mainly includes a support frame 5, an inspection table 6 supported by the support frame 5, and a left and right split cover that is attached to the front surface of the inspection table 6 through the hinge 9. The seventh optical measuring unit 8 attached to the rear surface of the inspection table 6, the operation panel SD fixed to the inspection table 6, the display unit RD fixed to the inspection table 6, and a control unit (not shown).

The support frame 5 is provided for supporting the other members, and has: a base; a support leg extending from the base toward the lower side and connected to the ground; and extending from the back surface of the base toward the upper portion to a predetermined height Rear support plate.

The inspection table 6 has a plate-shaped inspection table body; a long-sized positioning plate 60 disposed on the front surface of the inspection table body in a horizontal direction in the longitudinal direction; and a longitudinal direction along the longitudinal direction a long positioning plate 61 provided on the front surface of the inspection table main body in the longitudinal direction of the positioning plate 60; and four inspection holes 62, 63, 64 formed in the front and rear direction of the inspection table main body, 65; 4 sets of linear guides 66, 67, 68, 69 (69-1, 69-2) disposed behind the inspection table body; and 4 sets of adjustment motors 66 ' , 67 disposed behind the inspection table body ' , 68 ' , 69 ' (69-1 ' , 69-2 ' ).

The inspection table main body is placed on the substrate C to which the bonding material F is adhered together with the two positioning plates 60 and 61, and the positioning region to be positioned is divided. The plate-shaped inspection table body is a holder for adhering the substrate C of the bonding material F, and is supported by the front portion of the base of the support frame 5 and the upper portion of the rear support plate in a rearward tilting posture, and has a long shape. Each of the two positioning plates 60 and 61 is in surface contact with the adjacent two sides of the substrate C, and the substrate C to which the bonding material F is adhered is positioned on the inspection table body.

Among the four inspection holes 62, 63, 64, and 65, one inspection hole 62 (the inspection hole at the lower right side in FIG. 1A) is a circular hole formed in the extension line of the two positioning plates 60, 61 of the inspection table body. The portion near the intersection position, the other two inspection holes 63, 64 adjacent to the circular hole (the inspection holes at the lower left and the upper right in FIG. 1A) are perpendicular to each other, and the respective extension lines pass through the circular hole 62. The long hole, then the inspection hole 65 at the diagonal position of the circular hole (the inspection hole at the upper left of FIG. 1A) is formed to be inclined with respect to the other two inspection holes 63, 64 and the extension line passes through the circle Long holes in the hole.

As shown in Fig. 4, the linear guides 66, 67, 68, and 69 of the four sets are respectively disposed in the vicinity of the four inspection holes 62, 63, 64, and 65 behind the inspection table main body, and four optical measurement units 8 to be described later. Each of them is attached to the corresponding four sets of linear guides 66, 67, 68, 69, and four sets of adjustment motors 66 so as to be movable along the longitudinal direction of each of the inspection holes 62, 63, 64, and 65. ' , 67 ' , 68 ' , 69 ' are provided corresponding to the four linear guides 66, 67, 68, 69 behind the inspection table main body so that the four optical measurement units 8 described later are along the inspection holes. The movement of 62, 63, 64, and 65 in the longitudinal direction moves.

Specifically, the slide rail corresponding to the linear guide 66 of the inspection hole 62 which is a circular hole is provided in the horizontal direction below the inspection hole 62, and one end thereof is connected to the output shaft of the adjustment motor 66 ' . In addition, the slider of the linear guide 66 is slidably disposed on the slide rail, and one optical measuring unit 8 is mounted on the slider of the linear guide 66, and the imaging range thereof is opposite to the inspection hole 62, and at the same time, the inspection hole 62 is Within the scope.

The slide rail of the linear guide 67 corresponding to the inspection hole 63 of the long hole is provided in the horizontal direction below the inspection hole 63, and one end thereof is connected to the output shaft of the adjustment motor 67 ' . In addition, the slider of the linear guide 67 is slidably disposed on the slide rail, and the other optical measuring unit 8 is mounted on the slider of the linear guide 67, and the imaging range thereof is opposite to the inspection hole 63, and is inspected at the same time. The formation of the holes 63 is within the range.

The slide rail of the linear guide rail 68 corresponding to the inspection hole 64 of the long hole is provided on one of the left and right sides of the inspection hole 64 so that the longitudinal direction thereof is parallel to the longitudinal direction of the inspection hole 64. Connected to the output shaft of the adjustment motor 68 ' . In addition, the slider of the linear guide 68 is configured such that the slide rail is slidable, and the other optical measuring unit 8 is mounted on the slider of the linear guide 68, and the imaging range thereof is opposite to the inspection hole 64, and at the same time, the inspection is performed. The formation of the holes 64 is within the range.

The linear guide 69 corresponding to the inspection hole 65 of the long hole is formed by the first linear rail portion 69-1 and the second linear rail portion 69-2. The slide rail of the first linear rail portion 69-1 is provided in the horizontal direction above the inspection hole 65, and one end thereof is connected to the output shaft of one of the adjustment motors 69-1 ' among the adjustment motors 69 ' . The slider of the first linear rail portion 69-1 is such that the slide rail is slidable. Further, one end of the slide rail of the second linear rail portion 69-2 is attached to the slider of the first linear rail portion 69-1, and the other end is connected to the other one of the adjustment motors 69 ' . ' The output shaft. Then, the slide rail of the second linear rail portion 69-2 is configured such that the longitudinal direction thereof is perpendicular to the horizontal direction and parallel to the rear surface of the inspection table main body, and the slider of the second linear rail portion 69-2 The slide rails of the second linear guide portion 69-2 are slidable. Further, the optical measuring unit 8 is attached to the slider of the second linear rail portion 69-2, and the imaging range thereof is opposed to the inspection hole 65 and is within the range of the inspection hole 65.

The adjustment motors 66 ' , 67 ' , 68 ' , 69 ' (69-1 ' , 69-2 ' ) are servo motors and are connected to a control unit (not shown). The adjustment motors 66 ' , 67 ' , 68 ' , 69 ' are controlled by the control unit based on parameters input by the operator to control the linear guides to move the optical measurement units 8 to a desired position. Act in the way.

The lid member 7 is attached to the front surface of the inspection table 6 so as to be openable and closable when viewed from the front and rear directions. As shown in Fig. 1A, the cover member 7 is opened when the mounting portion of the inspection table 6 is opened. Then, as shown in Fig. 1B, the cover member 7 is shielded from the mounting area of the inspection table 6 when it is closed.

The four optical measuring units 8 are respectively disposed behind the viewing table 6 in front and rear directions, as described above, and corresponding inspection holes. It is constituted by the way of confrontation. In the case where the substrate C to which the adhesive composition F is adhered is placed on the inspection table 6, the four corners of the substrate C and the adhesive composition F are respectively located within the range of the four inspection holes 62, 63, 64, and 65. The optical measuring unit 8 is opposite to the four corners of the substrate C and the bonding material F, and at the four corners, the edge of the bonding material F is optically transmitted through the inspection hole and parallel to the bonding material F. The distance between the edges of the substrate C at the edge is measured (refer to Fig. 6).

Fig. 5 is an explanatory view showing the construction of the optical measuring unit 8 of the pasting position inspection device.

As shown in FIG. 5, each of the four optical measuring units 8 has a mount 80, an annular light source 81, a CCD camera 82, and an image processing means 83.

The mounting bracket 80 is a slider fixed to a corresponding linear guide (refer to reference numerals 66, 67, 68, 69 (69-1, 69-2)) as described above, and is movable along the slide rail together with the slider .

The annular light source 81 is attached to the mounting frame 80, and its light-emitting surface faces the inspection hole (reference numerals 62, 63, 64, 65) corresponding to the inspection table main body, and passes through the inspection hole for the substrate C and the bonding. Light is irradiated to the portion of the object F in the range in which the inspection hole is formed.

The CCD camera 82 is attached to the mounting frame 80 through the holder, and is disposed on the opposite side of the corresponding inspection hole with the annular light source 81 interposed therebetween. Then, the lens of the camera 82 is transmitted through the center hole of the annular light source 81 and the corresponding inspection hole to face the substrate C and the laminate F. The CCD camera 82 is emitted from the ring-shaped light source 81 and is attached by the substrate C and attached. The compound F is imaged in the direction of the lens, and the substrate C and the laminate F are imaged to generate image signals of the substrate C and the laminate F, and the image signal is transmitted to the image processing means 83.

The image processing means 83 is connected to the CCD camera 82, the control unit, and the display unit RD, and the edge of the bonding material F and the substrate parallel to the edge of the bonding material F by the image signal from the CCD camera 82. The distance between the edges of C (refer to symbols L1 and L2 in Fig. 6) is calculated, and the result of the calculation is sent to the display unit RD.

The operation panel SD has an operation button for the operator to turn the adhesion position inspection device on and off, and a touch panel for inputting various parameters to the operator.

The display unit RD is connected to the image processing means 83, the operation panel SD, and the like, and displays the image and measurement result from the image processing means 83 and the parameters input by the operator from the operation panel SD.

The control unit is connected to each of the adjustment motors 66 ' , 67 ' , 68 ' , 69 ' (69-1 ' , 69-2 ' ), the ring light source 81, the CCD camera 82, the image processing means 83, the operation panel SD, The display unit RD or the like mainly performs: 1) an operation for the operator to input and receive the parameters input by the operation panel SD; 2) adjusting the motors 66 ' , 67 ' , 68 according to the input parameters of the above 1). ' , 69 ' (69-1 ' , 69-2 ' ) operation to control the operation; 3) receiving the information from the image processing means 83 and remembering the operation; 4) based on the pre-stored control program 81. The operation of controlling the operation of the CCD camera 82 and the image processing means 83; and 5) the operation of controlling the display unit RD to display various parameters of the above 1) and 3) and other information.

<Action of the adhesive position inspection device>

Fig. 6 is an explanatory view showing an image of a substrate on which a sticker is adhered by image pickup using an annular illumination. 7A and 7B are flowcharts showing the operation of the pasting position inspection device in the embodiment of the present invention.

Hereinafter, the operation of the pasting position inspection apparatus according to the embodiment of the present invention will be described with reference to the drawings.

[Formulation process]

First, as shown in FIG. 7A, the operator turns on the pasting position inspection device by the operation panel SD in step S10, and then proceeds to step S11. In step S11, the operator sets the substrate C to which the adhesive composition F is attached to the mounting area of the inspection table 6.

At this time, the CCD camera 82 is switched to the operating state by the control of the control unit, and the substrate C and the bonding material F provided in the mounting region are imaged, and the captured image is displayed on the display unit RD.

Next, in step S12, the operator, while viewing the image displayed on the display unit RD, inputs the target value of the movement of the optical measuring unit 8 while operating on the panel SD, and falls into the edge of the substrate C and the laminate F. The position of each optical measurement unit 8 is adjusted in the manner of the imaging range.

Then, after the edges of the substrate C and the composition F fall within the imaging range, the process proceeds to step S13, and whether the edge and the parallel of the substrate C can be determined The distance between the edges of the laminate F at the edge of the substrate C is judged. If it is determined in step S13 that the measurement is impossible, the process returns to step S12.

On the other hand, if it is determined in step S13 that the measurement is possible, the process proceeds to step S14, and the recipe D1 in which the size of the substrate C described above is fitted is generated by the control unit, and the recipe D1 and the corresponding ones thereof are simultaneously prepared. The position of each of the optical measurement units 8 is stored in correspondence.

Finally, the process proceeds to step S15 to complete the formulation of the recipe. Further, after the end of step S14, the process returns to step S11, and the substrate C of another size to which the composition F is pasted is placed on the mounting area of the inspection table 6, and steps S12 to S14 are repeated to match the recipe D2 of other sizes. The positions of D3, ..., Dn and their corresponding optical measuring units 8 are determined and memorized.

[Quality inspection process]

First, as shown in FIG. 7B, the operator turns on the pasting position inspection device by the operation panel SD in step S20, and then proceeds to step S21. In step S21, the operator positions the substrate C to which the composition F is adhered, and positions it on the mounting area of the inspection table 6.

Next, in step S22, the operator determines whether or not the recipe Di of the size of the substrate C to be measured is stored in the pasting position inspection device.

When it is determined in step S22 that the recipe Di in which the size of the substrate C to be measured is not stored in the pasting position inspection device, the process proceeds to step S23 ' to return to the "recipe creation flow", and steps S12 to S15 are performed. The operation is thus made into a recipe Di.

On the other hand, if it is determined in step S22 that the recipe Di in which the size of the substrate C to be measured is matched is stored in the pasting position inspection device, the operator displays the corresponding recipe on the operation panel SD in step S23. Di makes a touch to select the recipe, and proceeds to step S24.

In step S24, the control unit reads the target position data of each optical measuring unit 8 that is combined with the recipe Di. Then, after the process of step S24 is completed, the process proceeds to step S25.

In step S25, the control unit sends a drive instruction to each of the adjustment motors 66 ' , 67 ' , 68 ' , 69 ' based on the target program data of each optical measurement unit 8 that is read, so that each adjustment motor is made. The rotation of 66 ' , 67 ' , 68 ' , 69 ' is only quantified to adjust each optical measurement unit 8 to the target position. After the process of step S25 is completed, the process proceeds to step S26.

In step S26, the control unit is a conventional optical measurement sheet. The ring-shaped light source 81 of the element 8 and the CCD camera 82 give an instruction to control the mode in which the ring-shaped light source 81 emits light and the CCD camera 82 performs an imaging operation.

Next, in step S27, the control unit controls to transmit the image captured by the CCD camera 82 to the image processing means 83. For the width direction and the vertical direction of the substrate C, as shown in FIG. 6, the image processing means 83 is based on the CCD camera. The image data of 82 is calculated from the distance L1 between the edge of the substrate C and the edge of the laminate F parallel to the edge of the substrate C, and the distance L2. Then, after the processing of step S27 is finished, proceed to Step S28.

In step S28, the control unit controls the calculation result (distance L1, L2) of the image processing means 83 and transmits the calculation result of the image processing means 83 to the display unit RD.

Finally, after the process of step S28 is completed, the process proceeds to step S29 to turn off the pasting position inspection device, and the quality check is ended.

<Effect of the adhesion position inspection device>

According to the present invention, four optical measuring units 8 can be used, and the edges of the composition F (for example, a polarizing film) and the substrate C (for example, a glass substrate) parallel to the edge of the bonding material F are respectively disposed at four corners. Since the distance between the edges is optically measured, it is possible to obtain a position on the substrate C in which the rectangular bonding material F bonded to the four sides of the rectangular substrate C is parallel to each other. Check the adhesion position inspection device with improved accuracy.

Further, the optical measuring unit 8 is disposed on the rear surface of the inspection table 6 so that the substrate can be prevented from interfering with the optical measurement unit when the substrate to which the adhesive is pasted is placed or taken out with respect to the inspection table. Then, an openable and closable cover member is provided on the front surface of the inspection table so that the cover member can be closed during the inspection, so that the measurement of the adhesive position of the adhesive composition using the optical measurement unit can be made more accurate.

<variation>

The above description is illustrative of the mode for carrying out the invention, but the invention is not limited to the embodiments described above. Without departing from the invention Various changes can be made within the scope of the invention, and such modifications are also included in the scope of the invention.

For example, in the above-described embodiment, each of the optical measuring units 8 is slidably disposed behind the inspection table 6 through the linear guides 66, 67, 68, and 69. However, the optical measurement unit 8 may be optically measured. One or a plurality of the units 8 are directly mounted on the rear surface of the inspection table 6.

In this case, the adjustment motors 66 ' , 67 ' , 68 ' , 69 ' (69-1 ' , 69-2 ' ) may be omitted.

Further, in the above-described embodiment, the first linear guide portion 69-1 and the second linear guide are used as means for moving the optical measuring unit 8 in the vicinity of the inspection hole 65 along the longitudinal direction of the inspection hole 65. The linear guide 69 formed by the portion 69-2 is not limited thereto, and a linear guide that matches the longitudinal direction of the slide rail with the longitudinal direction of the inspection hole 65 may be provided near the inspection hole 65 to be inspected. The optical measuring unit 8 near the hole 65 is mounted to the slider of the linear guide.

Further, in the above-described embodiment, the adjustment motor in which the output shaft is connected to the slide rail of the corresponding linear guide is provided, and the position of each optical measurement unit 8 is automatically adjusted by the adjustment motor, but is not limited thereto. The adjustment motor can be omitted and the position of each optical measurement unit 8 can be manually adjusted.

Further, in the above embodiment, each of the optical measuring units 8, the linear guides 66, 67, 68, 69 and the respective adjustment motors 66 ' , 67 ' , 68 ' , 69 ' are provided behind the inspection table 6, but It is not limited to this. A mounting frame that faces the inspection table 6 and is spaced apart from the front surface of the inspection table 6 at a predetermined interval may be disposed in front of the inspection table 6, and each linear guide 66, 67, 68, 69 and each adjustment motor 66 ' may be provided. 67 ' , 68 ' , 69 ' are attached to the mounting frame, and each optical measuring unit 8 is placed on a corresponding linear guide slider. That is, each of the optical measuring units 8, the linear guides 66, 67, 68, 69 and the respective adjustment motors 66 ' , 67 ' , 68 ' , 69 ' may be placed in front of the inspection table 6.

In this case, the inspection holes 62, 63, 64, 65 formed in the inspection table 6 and the cover member 7 attached to the inspection table 6 can be omitted.

Further, in the above embodiment, each of the optical measuring units 8, the linear guides 66, 67, 68, 69 and the respective adjustment motors 66 ' , 67 ' , 68 ' , 69 ' are provided behind the inspection table 6, but It is not limited to this. It is also possible to omit the arrangement of the linear guides 66, 67, 68, 69 and the respective adjustment motors 66 ' , 67 ' , 68 ' , 69 ', etc., and to face the inspection table 6 in front of the inspection table 6 and to check the inspection The optical measurement unit 8 is attached to the inspection table 6 through the mounting frame through the mounting frame at a predetermined interval on the front surface of the table 6. That is, each of the optical measuring units 8 can be disposed in front of the inspection table 6.

In this case, the inspection holes 62, 63, 64, 65 formed in the inspection table 6 and the cover member 7 attached to the inspection table 6 can be omitted.

Further, in the above embodiment, the cover member 7 is attached to the inspection table 6 through a hinge, but is not limited thereto. It is also possible to provide a slide rail on one side of the inspection table 6 and the cover member 7 and a slide member on the other side, and the cover member 7 is slidably mounted relative to the slide rail so as to be slidable relative to the inspection table 6 And open and close.

5‧‧‧Support frame

6‧‧‧Checkpoint

7‧‧‧Cleaning pieces

8‧‧‧Optical measurement unit

9‧‧‧ Hinges

60, 61‧‧‧ positioning plate

62, 63, 64, 65‧ ‧ inspection holes

Claims (10)

An adhesive position inspection device is characterized in that a position of a rectangular-shaped laminate which is bonded to each other on four sides in parallel with four sides of a rectangular substrate is inspected on the substrate, and is characterized in that: An inspection table that mounts the substrate on which the substrate of the paste is placed; is mounted on the inspection table and faces the four corners of the substrate and the laminate, and optically forms the foregoing at the four corners Four optical measurement units for measuring the distance between the edge of the laminate and the edge of the substrate parallel to the edge of the laminate; and the four optical measurement units connected to the four optical measurement units The measurement result display unit displayed as the measurement result by the distance measured by each of the units. The pasting position inspection device according to the first aspect of the invention, further comprising a cover that is openable and closable before and after the inspection table, opens the placement area when opened, and covers the placement area when closed In the mounting area on the inspection table, four inspection holes are formed through the front and rear, and the four corners of the substrate and the laminate are respectively located in the range of the four inspection holes, and the four opticals are The measuring units are respectively mounted on the front surface in the front-rear direction before and after the inspection table, and are respectively opposed to the four inspection holes. For example, the adhesive position inspection device of claim 2, Each of the four optical measuring units has a direction opposite to one of the four inspection holes, and passes through the inspection hole, and the substrate and the laminate are in the inspection hole. a light source that partially illuminates light in the range; an image that is reflected by the substrate and the laminate when the light source is used to emit light, an imaging device that images the substrate and the laminate; and an image pickup device and the measurement result The display unit calculates the distance between the edge of the laminate and the edge of the substrate parallel to the edge based on the image captured by the image capturing means, and transmits the distance to the image processing means of the measurement result display unit . The pasting position inspection device according to the third aspect of the invention, wherein the image pickup means is disposed on a side opposite to the inspection hole with the light source interposed therebetween. The adhesive position inspection device according to any one of the above-mentioned items, wherein the one of the four inspection holes is a circular hole, and the other two inspection holes adjacent to the circular hole have a longitudinal direction. a relationship perpendicular to each other and an extension line passing through the long hole of the circular hole, and an inspection hole at a diagonal position of the circular hole is formed obliquely with respect to the other two inspection holes and an extension wire passes through the long hole of the circular hole. The inspection table includes a rail mechanism in the vicinity of each of the inspection holes that are long holes, and the optical measurement unit that faces the inspection hole that is a long hole is provided along the corresponding inspection hole Long side direction The way of moving, while the corresponding aforementioned rail mechanism is mounted to be slidable. The adhesive position inspection device according to claim 5, wherein the inspection table is provided with a rail mechanism in the vicinity of the inspection hole which is a circular hole, and the optical measurement unit is opposed to the inspection hole which is a circular hole. The rail mechanism is slidably mounted in such a manner as to be movable within the formation range of the circular hole. The adhesive position inspection device according to claim 6, wherein the inspection table further includes a method of driving the corresponding optical measurement unit so as to move along the guide rail mechanism corresponding to each of the guide rail mechanisms. The drive unit further includes a control unit that controls the drive unit such that each of the optical measurement units moves to a desired position. The pasting position inspection device according to the first aspect of the invention, wherein the cover member is attached to the inspection table so as to be openable and closable through a hinge. The pasting position inspection device according to claim 1, wherein the inspection table and one of the cover members are provided with a slide rail, and the other of the cover members includes a slide member, and the cover member is configured to face the slider The slide rail is mounted to be slidable so as to be openable and closable with respect to the aforementioned inspection table. The adhesive position inspection device of claim 1, wherein the inspection table is disposed opposite to the inspection table and The mounting frames on the front surface of the inspection table are separated by a predetermined interval, and the four optical measurement units are respectively attached to the inspection table through the mounting frame.