KR20200093099A - Stage alignment device for manufacturing a display device and method - Google Patents

Abstract

The present invention relates to a stage alignment device for manufacturing a display device and a method thereof, which can adjust alignment between a first stage for supporting a flexible circuit board (FPC) and a second stage for supporting a panel in case of bending to attach and connect the FPC to the panel in a process of manufacturing the display device. According to the present invention, the stage alignment device for manufacturing the display device comprises: a first stage for fixing and supporting an FPC; a second stage spaced apart from the first stage, having one end facing one end of the first stage to be adjacent to each other, and fixing and supporting a panel; an image obtaining unit for obtaining image information by photographing the FPC and the panel; and a control unit for receiving image information on the FPC and the panel from the image obtaining unit to calculate an alignment error, and controlling movement and rotation of the first stage and a second stage in accordance with the calculated alignment error. A rotation central point of the first stage is located on an adjacent surface of the first stage, and the rotation central point of the second stage is located on an adjacent surface of the second stage.

Description

Stage alignment device for manufacturing a display device and method}

The present invention relates to a stage alignment device and method for manufacturing a display device, and more specifically, in the case of bending to connect a flexible printed circuit board (FPC) to a panel in a display device manufacturing process, The present invention relates to a stage alignment apparatus and method for manufacturing a display device, which controls alignment between a first stage fixing a flexible circuit board (FPC) and a second stage fixing a panel.

In general, a display device requires a process of bending a flexible circuit board (FPC) after attaching and connecting a flexible circuit board (FPC) to a panel in a manufacturing process. At this time, the bending process requires precise alignment between the first stage supporting the panel and the second stage supporting the flexible circuit board (FPC).

However, only one of the two stages performs the alignment function, and the operation stage performing the alignment operates around the support 4 axis geometry.

Accordingly, such a structure may cause damage to the flexible circuit board (FPC) by generating excessive stress on the flexible circuit board (FPC) during orthogonal and rotational direction adjustment of the panel and the flexible circuit board (FPC).

An object of the present invention for solving the above-described problem is, when bending to attach and connect the flexible circuit board (FPC) to the panel in the manufacturing process of the display device, the first stage and the panel supporting the flexible circuit board (FPC) Disclosed is a stage alignment apparatus and method for manufacturing a display device that controls alignment between second supporting stages.

A stage alignment device for manufacturing a display device according to an exemplary embodiment of the present invention includes: a first stage for fixing and supporting a flexible circuit board (FPC); A second stage spaced apart from the first stage, one end of which is adjacent to one end of the first stage and is fixed to the panel; An image acquisition unit that acquires image information by photographing a flexible circuit board (FPC) and a panel; And a controller that receives image information of the flexible circuit board (FPC) and the panel from the image acquisition unit, calculates alignment errors, and controls movement and rotation of the first and second stages according to the calculated alignment errors, The center of rotation of the first stage may be located on an adjacent surface of the first stage, and the center of rotation of the second stage may be located on an adjacent surface of the second stage.

The controller may calculate the alignment error by analyzing the image information and calculating a distance from an adjacent surface of the first stage to an adjacent surface of the second stage.

The center of rotation of the first stage and the center of rotation of the second stage may be located on the same straight line in a plane.

The control unit may control movement and rotation of the first stage and the second stage until the adjacent surfaces of the first stage and the adjacent surfaces of the second stage are parallel to each other.

The control unit may move at least one of the first stage or the second stage in the thickness direction such that the upper end of the adjacent surface of the first stage and the upper end of the adjacent surface of the second stage are on one plane.

The first stage includes: a first driving unit for moving the first stage in the x-axis direction; A second driving unit moving the first stage in the y-axis direction; And a third driving unit moving the first stage in the z-axis direction.

The first driving unit includes a first-first driving unit for moving the upper side of the first stage in the x-axis direction, and a first-second driving unit for moving the lower side of the first stage in the x-axis direction. Can.

The second driving unit includes a 2-1 driving unit for moving the left side (左) of the first stage in the y-axis direction and a 2-2 driving portion for moving the right side (右) of the first stage in the y-axis direction. Can.

The second stage includes: a fourth driving unit moving the second stage in the x-axis direction; A fifth driving unit moving the second stage in the y-axis direction; And a sixth driving unit moving the second stage in the z-axis direction.

The fourth driving unit includes a 4-1 driving unit for moving the upper side of the second stage in the x-axis direction, and a 4-2 driving unit for moving the lower side of the second stage in the x-axis direction. Can.

The fifth driving unit includes a 5-1 driving unit that moves the left side of the second stage in the y-axis direction, and a 5-2 driving portion that moves the right side of the second stage in the y-axis direction. Can.

Meanwhile, a stage alignment method for manufacturing a display device according to an exemplary embodiment of the present invention includes: (a) a first stage fixing and supporting a flexible circuit board (FPC); (b) the second stage fixing and supporting the panel; (c) acquiring image information by photographing the first stage and the second stage by an image acquisition unit; (d) the control unit receiving the image information from the image acquisition unit and calculating an alignment error; And (e) the control unit controlling the movement and rotation of the first stage and the second stage according to the calculated alignment error.

The second stage is spaced from the first stage, one end of which is opposite to one end of the first stage, the center of rotation of the first stage is located on the adjacent surface of the first stage, and the center of rotation of the second stage is the first It can be located on two adjacent stages.

In step (d), the controller may calculate the alignment error by analyzing the image information and calculating a distance from the adjacent surface of the first stage to the adjacent surface of the second stage.

In step (e), the controller may control movement and rotation of the first stage and the second stage until the adjacent surfaces of the first stage and the adjacent surfaces of the second stage are parallel to each other.

In step (e), the control unit may move at least one of the first stage or the second stage in the thickness direction such that the upper end of the adjacent surface of the first stage and the upper end of the adjacent surface of the second stage are on one plane. have.

In step (e), the control unit moves the first stage in the x-axis direction through the first driving unit, moves the first stage in the y-axis direction through the second driving unit, or the first driving unit and the second driving unit. Simultaneously by controlling, the first stage can be rotated at a certain angle in the left or right direction.

In step (e), the control unit may move the second stage in the x-axis direction through the fourth driving unit, move the second stage in the y-axis direction through the fifth driving unit, or the fourth driving unit and the fifth driving unit. Simultaneously by controlling, the second stage can be rotated in a left or right direction at a certain angle.

In step (e), the controller may move the first stage in the z-axis direction through the third driving unit or the second stage in the z-axis direction through the sixth driving unit.

In step (e), the control unit moves the first stage in the z-axis direction through the third driving unit, or moves the second stage in the z-axis direction through the sixth driving unit, so that the upper end and the thickness direction of the first stage are removed. The upper end of the thickness direction of the two stages may be positioned on the same straight line.

In general, a flexible circuit board (FPCB) attached to a panel is vulnerable to breakage due to a slight tensile and torsional load, and damage to the flexible circuit board (FPCB) connected to the panel may occur in the process of position correction by an existing single alignment stage Can.

However, according to the present invention, it is possible to implement a bending system in consideration of the structure of a flexible circuit board (FPCB) vulnerable to external loads. That is, it is possible to implement a bending process while minimizing excessive load applied to the flexible circuit board (FPCB).

In addition, since the occurrence of damage or defects in the flexible circuit board (FPCB) can be prevented, the yield of the module process can be improved.

1 is a view schematically showing the overall configuration of a stage alignment device for manufacturing a display device according to an embodiment of the present invention.
2 is a view showing a center of rotation of the first stage and the second stage according to an embodiment of the present invention.
3 is a view showing a distance from an adjacent surface of the first stage to an adjacent surface of the second stage according to an embodiment of the present invention.
4 is a view showing a reference position of the first stage and the second stage according to an embodiment of the present invention.
5 is a view showing that the center of rotation of the first stage and the center of rotation of the second stage are located on the same straight line according to an embodiment of the present invention.
6 is a view showing an example of moving and rotating the first stage and the second stage until the two adjacent surfaces are parallel according to an embodiment of the present invention.
7 is a view showing an example of moving the first stage or the second stage in the thickness direction according to an embodiment of the present invention.
8 is a view showing a driving unit of the first stage according to an embodiment of the present invention.
9 is a view showing a driving unit of the second stage according to an embodiment of the present invention.
10 is a view showing an example of moving the first stage or the second stage in the x-axis direction according to an embodiment of the present invention.
11 is a view showing an example of moving the first stage or the second stage in the x-axis and y-axis according to an embodiment of the present invention.
12 is a view showing an example of rotating the first stage or the second stage according to an embodiment of the present invention.
13 is a view showing an example of shooting the first stage and the second stage in the image acquisition unit according to an embodiment of the present invention.
14 is a diagram illustrating an example of calculating Z coordinates of a first stage and a second stage according to an embodiment of the present invention.
15 is a flowchart illustrating a stage alignment method for manufacturing a display device according to an embodiment of the present invention.
16 is a view illustrating an example in which the first stage and the second stage rotate according to a rotation center point according to an embodiment of the present invention.

Advantages and features of the present invention, and methods for achieving them will be clarified with reference to embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, and only the present embodiments allow the disclosure of the present invention to be complete, and the general knowledge in the technical field to which the present invention pertains. It is provided to fully inform the holder of the scope of the invention, and the invention is only defined by the scope of the claims. Thus, in some embodiments, well-known process steps, well-known device structures, and well-known techniques are not specifically described to avoid obscuring the present invention. The same reference numerals refer to the same components throughout the specification.

The spatially relative terms “below”, “beneath”, “lower”, “above”, “upper”, etc., are as shown in the figure. It can be used to easily describe the correlation of a device or components with other devices or components. The spatially relative terms should be understood as terms including different directions of the device in use or operation in addition to the directions shown in the drawings. For example, if the device shown in the figure is turned over, a device described as "below" or "beneath" the other device may be placed "above" the other device. Thus, the exemplary term “below” can include both the directions below and above. The device can also be oriented in other directions, so that spatially relative terms can be interpreted according to the orientation.

In the present specification, when a part is connected to another part, this includes not only the case of being directly connected, but also the case of being electrically connected with another element in between. In addition, when a part includes a certain component, this means that other components may be further included rather than excluding other components unless otherwise specified.

In the present specification, terms such as first, second, and third may be used to describe various components, but these components are not limited by the terms. The terms are used for the purpose of distinguishing one component from other components. For example, without departing from the scope of the present invention, the first component may be referred to as a second or third component, etc., and similarly, the second or third component may also be alternately named.

Unless otherwise defined, all terms (including technical and scientific terms) used in the present specification may be used as meanings commonly understood by those skilled in the art to which the present invention pertains. In addition, terms defined in commonly used dictionaries are not to be interpreted ideally or excessively, unless specifically defined.

Hereinafter, a stage alignment device for manufacturing a display device according to the present invention will be described in detail with reference to FIGS. 1 to 16.

1 is a view schematically showing the overall configuration of a stage alignment device for manufacturing a display device according to an embodiment of the present invention.

Referring to FIG. 1, a stage alignment device 100 for manufacturing a display device according to an embodiment of the present invention includes a flexible printed circuit board (FPC) 110, a first stage (Stage 1) 120, A panel 130, a second stage 140, an image acquisition unit 150, and a control unit 160 may be included.

In general, the display device may include a driving IC for driving the display panel, and a flexible circuit board 110 connected to the display panel to transmit a signal for driving the display panel.

The flexible circuit board 110 is connected to the panel 130 and is used to receive a detection signal from the panel 130 and transmit it to the driving IC.

The first stage 120 fixes and supports the flexible circuit board 110.

The panel 130 may be, for example, a display panel, and receives a driving signal from the driving IC through the flexible circuit board 110. In addition, the panel 130 may be, for example, a touch screen panel, and transmit a detection signal generated according to a user's touch to the driving IC through the flexible circuit board 110.

The second stage 140 fixes and supports the panel 130, is spaced apart from the first stage 120, and one end is adjacent to one end of the first stage 120 adjacent to each other.

The image acquisition unit 150 may acquire image information by photographing the flexible circuit board 110 and the panel 130. The image acquisition unit 150 acquires a captured image by photographing, for example, the first stage 120 fixing the flexible circuit board 110 and the second stage 140 fixing the panel 130. An example of this is a camera. Here, the camera may generate image information by collecting light emitted from an object to be photographed through an image sensor such as a Charge Coupled Device (CCD) or a Complementary Metal Oxide Semiconductor (CMOS). The image acquiring unit 150 according to the present invention may be any one of an industrial camera, but is not limited thereto, and may be any device as long as it is a device capable of generating image information.

The control unit 160 receives the image information of the flexible circuit board 110 and the panel 130 from the image acquisition unit 150 to calculate alignment errors, and according to the calculated alignment error, the first stage 120 and the second stage The movement and rotation of the stage 140 can be controlled.

Here, the rotation center point 122 of the first stage 120 is located on the adjacent surface 124 of the first stage 120 as shown in FIG. 2, and the rotation center point 142 of the second stage 140 May be located on the adjacent surface 144 of the second stage 140. 2 is a view showing a center of rotation of the first stage and the second stage according to an embodiment of the present invention. In FIG. 2, the rotation center point 122 of the first stage 120 is located at the center on the adjacent surface 124 of the first stage 120, but is not limited thereto. Can be located at In addition, in FIG. 2, the rotation center point 142 of the second stage 140 is illustrated as being located at the center on the adjacent surface 144 of the second stage 140, but is not limited thereto, and the left or left end of the adjacent surface or It can be located on the right or right end of the adjacent surface.

The controller 160 analyzes the image information and calculates a distance from an adjacent surface 124 of the first stage 120 to an adjacent surface 144 of the second stage 140 as illustrated in FIG. 3. The error can be calculated. 3 is a view showing a distance from an adjacent surface of the first stage to an adjacent surface of the second stage according to an embodiment of the present invention. That is, as shown in FIG. 3, the control unit 160 includes a distance d1 from the right adjacent surface of the first stage 120 to the right adjacent surface of the second stage 140 and the first stage 120. The distance d2 from the rotation center point to the rotation center point of the second stage 140 and the distance d3 from the left adjacent surface of the first stage 120 to the left adjacent surface of the second stage 140 can be calculated, respectively. have.

At this time, the control unit 160 is the reference position 320 of the first stage 120 and the second stage 140, the first stage 120 and the second stage 140 are parallel to each other, the reference position of the second stage 140 340 is stored in the internal memory.

Here, the reference position 320 of the first stage 120 is four vertices constituting the first stage 120, as shown in Figure 4, that is, a (x1, y1), b (x2, y2), Contains the x and y coordinates for c(x3, y3) and d(x4, y4), respectively. 4 is a view showing a reference position of the first stage and the second stage according to an embodiment of the present invention. In addition, in FIG. 4, the reference position 340 of the second stage 140 is four vertices constituting the second stage 140, that is, e(x5, y5), f(x6, y6), g(x7) , y7), h(x8, y8), respectively.

In addition, as illustrated in FIG. 5, the rotation center point 122 of the first stage 120 and the rotation center point 142 of the second stage 140 may be located on the same straight line 510 on a plane. 5 is a view showing that the center of rotation of the first stage and the center of rotation of the second stage are located on the same straight line according to an embodiment of the present invention.

In addition, the control unit 160, as shown in FIG. 6 until the adjacent surface 124 of the first stage 120 and the adjacent surface 144 of the second stage 140 are parallel to each other ( 120) and the second stage 140 may be controlled to move and rotate. 6 is a view showing an example of moving and rotating the first stage and the second stage until the two adjacent surfaces are parallel according to an embodiment of the present invention. That is, as illustrated in FIGS. 4 and 6, the control unit 160 has a current position (a′, b′, c′, d′) of the first stage 120 as a reference position of the first stage 120. The first stage 120 may be moved and rotated to be (a, b, c, d). In addition, as shown in FIGS. 4 and 6, the control unit 160 has a current position (e′, f′, g′, h′) of the second stage 140 as a reference position of the second stage 120. The movement and rotation of the second stage 140 may be controlled to be (e, f, g, h).

4 and 6, the first stage 120 moves and rotates under the control of the control unit 160, so that the current positions a'(x1', y1'), b'(x2') corresponding to each vertex y2'), c'(x3', y3'), d'(x4', y4') are reference positions a(x1, y1), b(x2, y2), c(x3, y3), d(x4 , y4).

4 and 6, the second stage 140 moves and rotates under the control of the controller 160, so that the current positions e'(x5', y5'), f'(x6') corresponding to each vertex y6'), g'(x7', y7'), h'(x8', y8') are reference positions e(x5, y5), f(x6, y6), g(x7, y7), h(x8 , y8).

On the other hand, the control unit 160, as shown in FIG. 7, the upper end 126 of the adjacent surface 124 of the first stage 120 and the upper end 146 of the adjacent surface 144 of the second stage 140 At least one of the first stage 120 or the second stage 140 may be moved in the thickness direction (+z or -z) to be positioned on one plane. 7 is a view showing an example of moving the first stage or the second stage in the thickness direction according to an embodiment of the present invention. Therefore, the upper end 126 of the adjacent surface 124 of the first stage 120 and the upper end 146 of the adjacent surface 144 of the second stage 140 are positioned on the same line.

8 is a view showing a driving unit of a first stage according to an embodiment of the present invention, and FIG. 9 is a view showing a driving unit of a second stage according to an embodiment of the present invention.

8 and 9, the first stage 120 according to the present invention includes a first driving unit 810, a second driving unit 820, and a third driving unit 830.

The first driving unit 810 moves the first stage 120 in the x-axis direction, and includes a 1-1 driving unit 812 and a 1-2 driving unit 814 as illustrated in FIG. 8. The first-first driving unit 812 moves the upper side (top, X1) of the first stage 120 in the x-axis direction, and the first-second driving unit 814 is the lower side of the first stage 120 (below, X2) is moved in the x-axis direction. That is, the first driving unit 810 converts the rotational motion of the motor into a linear motion to move the upper and lower sides of the first stage 120 in the x-axis direction.

The second driving unit 820 moves the first stage 120 in the y-axis direction orthogonal to the x-axis direction, and as illustrated in FIG. 9, the 2-1 driving unit 822 and the 2-2 driving unit ( 824). The 2-1 driving unit 822 moves the left (左, Y1) of the first stage 120 in the y-axis direction, and the 2-2 driving unit 824 is the right (右, of the first stage 120) Y2) is moved in the y-axis direction. That is, the second driving unit 820 converts the rotational motion of the motor into a linear motion to move the left and right sides of the first stage 120 in the y-axis direction.

The third driving unit 830 moves the first stage 120 in the z-axis direction perpendicular to the x-axis direction and also perpendicular to the y-axis direction. That is, the third driving unit 830 converts the rotational motion of the motor into a linear motion, and moves the first stage 120 in the z-axis direction as shown in FIG. 8.

The second stage 140 includes a fourth driver 840, a fifth driver 850 and a sixth driver 860.

The fourth driving unit 840 moves the second stage 140 in the x-axis direction, and includes a 4-1 driving unit 842 and a 4-2 driving unit 844 as illustrated in FIG. 8. The 4-1 driving unit 842 moves the upper side (X1) of the second stage 140 in the x-axis direction, and the 4-2 driving unit 844 moves the lower side (below) of the second stage 140. , X2) in the x-axis direction. That is, the fourth driving unit 840 converts the rotational motion of the motor into a linear motion, and moves the upper and lower sides of the second stage 140 in the x-axis direction as shown in FIG. 8.

The fifth driving unit 850 moves the second stage 140 in the y-axis direction orthogonal to the x-axis direction, and as illustrated in FIG. 9, the 5-1 driving unit 852 and the 5-2 driving unit ( 854). The 5-1 driving unit 852 moves the left (左, Y1) of the second stage 140 in the y-axis direction, and the 5-2 driving unit 854 is the right (右, of the second stage 140) Y2) is moved in the y-axis direction. That is, the fifth driving unit 850 converts the rotational motion of the motor into a linear motion, and moves the left and right sides of the second stage 140 in the y-axis direction as shown in FIG. 9.

The sixth driving unit 860 moves the second stage 140 in the z-axis direction orthogonal to the x-axis direction and also perpendicular to the y-axis direction. The sixth driving unit 860 also converts the rotational motion of the motor into a linear motion, and moves the second stage 140 in the z-axis direction as shown in FIG. 9.

Here, the first driving unit 810 to the sixth driving unit 860 are illustrated as using the power of the motor, but the solenoid power is not limited thereto.

10 is a view showing an example of moving the first stage or the second stage in the x-axis direction according to an embodiment of the present invention.

Referring to FIG. 10, when the first stage 120 or the second stage 140 is moved in the x-axis direction, the control unit 160 according to the present invention controls only the first driving unit 810 to control the first stage The 120 or the second stage 140 is moved in the x-axis direction.

For example, when the first stage 120 is moved in the x-axis direction, the control unit 160 may include a first-first driving unit 812 and a first stage on the upper side X1 of the first stage 120. Simultaneously controlling the 1-2 driver 814 on the lower side X2 of the 120, the first stage 120 is moved in the +X axis direction. That is, the control unit 160 does not control the second driving unit 820 moving the first stage 120 in the y-axis direction.

Accordingly, the first driving unit 810 simultaneously drives the first-first driving unit 812 and the first-second driving unit 814 to move the first stage 120 in the +X axis direction.

Likewise, when the second stage 140 is moved in the X-axis direction, the control unit 160 simultaneously controls the 4-1 driving unit 842 and the 4-2 driving unit 844 in the same manner, so that the second stage The 140 may be moved in the +X axis direction or the -X axis direction.

11 is a view showing an example of moving the first stage or the second stage in the x-axis and y-axis directions according to an embodiment of the present invention.

Referring to FIG. 11, when the first stage 120 or the second stage 140 according to the present invention is moved in the x-axis and the y-axis, the control unit 160 includes a first driver 810 and a second driver 820 is controlled. For example, the control unit 160 controls the first driving unit 810 to move the first stage 120 on the x-axis, and then controls the second driving unit 820 to y-axis the first stage 120. To move.

Accordingly, the first driving unit 810 simultaneously drives the first-first driving unit 812 and the first-second driving unit 814 to move the first stage 120 in the +X axis direction, and the second driving unit 820. ) Moves the first stage 120 moved in the +X axis direction in the -Y axis direction.

At this time, the control unit 160 may control the first driving unit 810 first and then control the second driving unit 820 later, or control the second driving unit 820 first and control the first driving unit 810 later. . That is, the control unit 160 does not simultaneously control the first driving unit 810 and the second driving unit 820, and sequentially controls the two driving units.

Similarly, when the second stage 140 moves in the X-axis and Y-axis directions, the control unit 160 controls the fourth driving unit 840 in the same manner to move the second stage 140 in the +X-axis direction. After that, the fifth driving unit 850 may be controlled to move the second stage 140 in the -Y axis direction.

12 is a view showing an example of rotating the first stage or the second stage according to an embodiment of the present invention.

Referring to FIG. 12, the control unit 160 according to the present invention includes the first-first driving unit 812 and the first-second driving unit 814 when the first stage 120 or the second stage 140 is rotated. And the second driving unit 820 simultaneously.

For example, the controller 160 moves the first stage 120 through the 1-1 driving unit 812 in the +X axis direction, and the first stage 120 through the 1-2 driving unit 814- In the X-axis direction, the first stage 120 is moved through the second driving unit 820 in the -Y-axis direction, all at the same time. Therefore, as shown in FIG. 12, the first stage 120 moves to the right as the upper left end moves up, moves to the right while the upper right end moves to the right, and moves to the left while the lower right end moves down. , The lower left end moves to the left and moves upward, and a right turn is performed.

Likewise, the control unit 160 may rotate the second stage 140 in the same manner as shown in FIG. 12. That is, the controller 160 moves the second stage 140 through the 4-1 driving unit 842 in the +X axis direction, and the second stage 140 through the 4-2 driving unit 844 -X axis. In the direction, the second stage 140 is moved through the fifth driving unit 850 in the -Y axis direction, all at the same time. Therefore, as shown in FIG. 12, the second stage 140 moves to the right as the upper left end moves up, moves to the right while the upper right end moves to the right, and moves to the left while the lower right end moves down. , The lower left end moves to the left and moves upward, and a right turn is performed.

13 is a view showing an example of shooting the first stage and the second stage in the image acquisition unit according to an embodiment of the present invention.

1 to 13, the image acquiring unit 150 according to the present invention photographs the flexible circuit board 110 fixed to the first stage 120 through the camera, and at the same time, the second stage 140 The panel 130 fixed to the camera is photographed.

To this end, the image acquisition unit 150 is located above the first stage 120 or the second stage 140.

The control unit 160 calculates the positions of the first stage 120 and the second stage 140 based on the image information captured by the image acquisition unit 150. Specifically, the control unit 160 analyzes the captured image information to detect 3D coordinates (XYZ coordinates) of the first stage 120 and the second stage 140. To this end, the control unit 160, for example, binarizes the image information received from the image acquisition unit 150 based on the photographing illuminance to generate a black-white image. The black-white image is scanned in the vertical and horizontal directions to extract the basic contours of the subject in the image, determine the center position of the subject from the contours, and determine the subject (eg, stage) based on the center position. ), each vertex position can be detected.

Accordingly, the control unit 160 may obtain XY coordinates of the first stage 120 and the second stage 140 as illustrated in FIG. 6. That is, the control unit 160 corresponds to each vertex coordinates a'(x1', y1'), b'(x2', y2'), and c'(x3', y3' corresponding to the current position of the first stage 120 ), d'(x4', y4'). In addition, the control unit 160, each vertex coordinates corresponding to the current position of the second stage 140 e'(x5', y5'), f'(x6', y6'), g'(x7', y7' ), h'(x8', y8').

Meanwhile, the control unit 160 may calculate Z coordinates of the first stage 120 and the second stage 140 as illustrated in FIG. 14.

14 is a diagram illustrating an example of calculating Z coordinates of a first stage and a second stage according to an embodiment of the present invention.

Referring to FIG. 14, the image acquisition unit 150 according to the present invention photographs the region 151 of the maximum viewing angle and transmits a plurality of images to the control unit 160. In FIG. 14, the maximum viewing angle of the image acquisition unit 150 is 2θ. That is, the image acquisition unit 150 can freely set the maximum viewing angle according to the place where it is installed, and the area 151 of the maximum viewing angle that the image acquisition unit 150 can photograph is determined according to the set maximum viewing angle. . The image acquisition unit 150 may photograph the first stage 120 and the second stage 140 within the region 151 of the maximum viewing angle.

The controller 160 calculates the positions of the first stage 120 and the second stage 140 based on the plurality of images. To this end, the controller 160 includes a ratio calculator 162 and a coordinate calculator 164.

First, the reference point 0 of the Z coordinate is defined as the image acquisition unit 150. In addition, the reference point (0) overlaps the center of the reference surface (1410). Here, the reference surface 1410 may set the upper surface of the second stage 140 shown in FIG. 13. In contrast, the reference surface 1410 of the maximum viewing angle area 151 may be set as an upper surface of the first stage 120. In addition, the reference surface 1410 may be set as a virtual surface having a different height. A plane set parallel to the reference plane 1410 based on the Z coordinate among the three-dimensional coordinates is defined as a photographing plane 1420. Here, the photographing surface 1420 may set an upper surface of the first stage 120 illustrated in FIG. 13. Therefore, the 3D coordinates of the first stage 120 located on the photographing surface 1420 are 3D coordinates of the stage to be actually obtained.

The Z coordinate of the stage becomes Z1 when located on the reference plane 1410 and Z2 when located on the photographing surface 1420. The maximum viewing angle of the image acquisition unit 150 is 2. Since the reference surface 1410 is an upper surface of the second stage 140, the length t1 of one side of the reference surface 1410 can be measured. The length t2 corresponding to half of one side of the reference surface 1410 can also be known through the measured length t1 of one side.

Therefore, Z1 is determined according to the following equation (1) according to the law of the trigonometric function.

On the other hand, the size of the stage of the image captured by the image acquisition unit 150 varies according to the actual position height. That is, the farther away from the image acquisition unit 150, the smaller the size of the stage photographed.

Therefore, it is possible to know the height of the actual stage, that is, the Z coordinate according to the size of the stage photographed.

The size of the second stage 140 located on the reference plane 1410 becomes a reference value, and the size of the second stage 140 photographed by the image acquisition unit 150 can be compared with a reference value to calculate a coordinate conversion ratio. . The coordinate conversion ratio can be calculated according to Equation 2 below.

Accordingly, if the coordinate conversion ratio is multiplied by Equation 1, the Z coordinate of the first stage 120 may be calculated according to Equation 3 below.

The ratio calculating unit 162 calculates the coordinate conversion ratio using the size of the stage and the size of the stage displayed on the image according to the coordinates of the reference plane 1410 of the region 151 of the maximum viewing angle.

The coordinate calculating unit 164 includes a coordinate conversion ratio, a maximum viewing angle of the image acquisition unit 150, a Z coordinate (Z1) of the second stage 140 located on the reference plane 1410, and a reference plane 1410 of the maximum viewing angle region. The Z coordinate Z2 of the first stage 120 is calculated using the length t1 of one side of.

Meanwhile, the XY coordinates of the first stage 120 set a reference point (0) in the image information, and each vertex coordinates a'(x1', y1') as shown in FIG. 6 according to the set reference point (0), You can get b'(x2', y2'), c'(x3', y3'), and d'(x4', y4').

Here, since the XY coordinates of the first stage 120 displayed on the image information are different from the actual, the actual XY coordinates can be obtained when the coordinate conversion ratio obtained above is applied according to Equation 4 below.

As described above, the present invention can more accurately calculate the three-dimensional coordinates of the stage using the maximum perspective angle of the image acquisition unit 150 and the coordinate conversion ratio.

6, the control unit 160 displays XY current coordinates (a', b', c', d') of the first stage 120 and the first stage 120 as shown in FIG. 4. Alignment errors of XY coordinates are calculated by comparing XY reference coordinates (a, b, c, d), respectively.

In addition, the controller 160 compares the Z coordinate (Z1) from the image acquisition unit 150 to the reference plane 1410 and the Z coordinate (Z2) from the image acquisition unit 150 to the photographing surface 1420. Calculate the alignment error of the coordinates.

Then, the control unit 160 controls the alignment of the first stage 120 by controlling the first driving unit 810, the second driving unit 820, and the third driving unit 830 according to the calculated alignment error.

On the other hand, the control unit 160 is the XY current coordinates of the second stage 140 shown in FIG. 6 (e', f', g', h'), and the XY of the second stage 140 shown in FIG. Alignment errors of XY coordinates are calculated by comparing reference coordinates (e, f, g, and h), respectively.

In addition, the control unit 160 controls the fourth driving unit 840, the fifth driving unit 850, and the sixth driving unit 860 according to the calculated XY coordinate alignment error and Z coordinate alignment error, thereby controlling the second stage 140. ).

15 is a flowchart illustrating a stage alignment method for manufacturing a display device according to an embodiment of the present invention.

1 to 16, in the stage alignment method for manufacturing a display device according to an exemplary embodiment of the present invention, first, the first stage 120 fixes and supports the flexible circuit board 110 (S1510 ).

Here, the second stage 140 is spaced apart from the first stage 120, one end of which is opposite to one end of the first stage 120 adjacent to each other.

In addition, the center of rotation 122 of the first stage 120 is located on the adjacent surface 124 of the first stage 120, and the center of rotation 142 of the second stage 140 is the second stage 140 ).

Subsequently, the second stage 140 fixes and supports the panel 130 (S1520).

Subsequently, the image acquisition unit 150 acquires image information by photographing the first stage 120 and the second stage 140 (S1530 ).

That is, the image acquisition unit 150 acquires image information by photographing the flexible circuit board 110 fixed to the first stage 120 and the panel 130 fixed to the second stage 140.

Subsequently, the control unit 160 receives image information of the flexible circuit board 110 and the panel 130 from the image acquisition unit 150 to calculate an alignment error (S1540).

At this time, the controller 160 analyzes the image information, and as shown in FIGS. 4 and 6, the current position (a', b', c', d') of the first stage 120 and the reference position ( a, b, c, d) and comparing the current position (e', f', g', h') of the second stage 140 with the reference position (e, f, g, h), Alignment errors can be calculated.

In addition, the controller 160 analyzes the image information to calculate a distance (d1, d2, d3) from the adjacent surface 124 of the first stage 120 to the adjacent surface 144 of the second stage 140 Alignment errors can be calculated.

Subsequently, the controller 160 controls movement and rotation of the first stage 120 and the second stage 140 according to the calculated alignment error (S1550).

At this time, the control unit 160, as shown in Figure 3, the first stage 120, the adjacent surface 124 and the second stage 140 of the adjacent surface 144 until the parallel to each other, the first stage ( 120) and the second stage 140 may be controlled to move and rotate. In FIG. 3, when the separation distance when the first stage 120 and the second stage 140 are parallel to each other is d2, the control unit 160 may transmit the first driving unit 810 and the second driving unit 820 through the first driving unit 810 and the second driving unit 820. By controlling the movement and rotation of the first stage 120, and controlling the movement and rotation of the second stage 140 through the fourth driving unit 840 and the fifth driving unit 850, d3 becomes d2, d1 Let d2 be this.

That is, the control unit 160 may move the first stage 120 in the x-axis direction through the first driving unit 810 or the y-axis direction through the second driving unit 820. At this time, the control unit 160 may simultaneously control the first driving unit 120 and the second driving unit 140 to rotate the first stage 120 at a certain angle in the left or right direction.

In addition, the control unit 160 may move the second stage 140 in the x-axis direction through the fourth driving unit 840 or in the y-axis direction through the fifth driving unit 850. At this time, the control unit 160 may simultaneously control the fourth driving unit 840 and the fifth driving unit 850 to rotate the second stage 140 at a certain angle in the left or right direction.

For example, as illustrated in FIG. 16, the first stage 120 rotates clockwise right with respect to the rotation center point 122, and the second stage 140 counterclockwise with respect to the rotation center point 142. Turn left in the direction. 16 is a view illustrating an example in which the first stage and the second stage rotate according to a rotation center point according to an embodiment of the present invention. Accordingly, the first stage 120 and the second stage 140 are in a state where two adjacent surfaces 124 and 144 are parallel to each other as shown in FIG. 16.

On the other hand, the control unit 160, as shown in FIG. 7, the upper end 126 of the adjacent surface 124 of the first stage 120 and the upper end 146 of the adjacent surface 144 of the second stage 140 At least one of the first stage 120 or the second stage 140 may be moved in the thickness direction (+Z or -Z) to be positioned on one plane.

That is, the control unit 160 moves the first stage 120 in the z-axis direction through the third driving unit 830 or the second stage 140 in the z-axis direction through the sixth driving unit 860. Can be moved.

In this case, the control unit 160 moves the first stage 120 in the z-axis direction through the third driving unit 830 or the second stage 140 in the z-axis direction through the sixth driving unit 860. By moving, the upper end 126 in the thickness direction of the first stage 120 and the upper end 146 in the thickness direction of the second stage 140 may be positioned on the same straight line.

According to the present invention as described above, in the case of bending to connect the flexible circuit board (FPC) to the panel in the display device manufacturing process, the first stage supporting the flexible circuit board (FPC) and the second stage supporting the panel It is possible to realize a stage alignment device and method for manufacturing a display device that adjusts the alignment of the liver.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and it is common in the technical field to which the present invention pertains that various substitutions, modifications and changes are possible without departing from the spirit of the present invention. It will be clear to those who have the knowledge of

100: stage alignment device for manufacturing a display device
110: flexible circuit board 120: first stage
122: first stage rotation center point 124: first stage adjacent surface
130: panel 140: second stage
142: second stage rotation center point 144: second stage adjacent surface
150: image acquisition unit 160: control unit
810: 1st driving unit 812: 1-1 driving unit
814: first-2 driving unit 820: second driving unit
822: 2-1 driving unit 824: 2-2 driving unit
830: third driving unit 840: fourth driving unit
842: 4-1 driving unit 844: 4-2 driving unit
850: 5th driving unit 852: 5-1 driving unit
854: 5-2 driving unit 860: 6th driving unit
1410: Reference plane 1420: Shooting plane
a, b, c, d: reference position of the first stage
a', b', c', d': current position of the first stage
e, f, g, h: reference position of the second stage
e', f', g', h': the current position of the second stage

Claims (20)

A first stage for fixing and supporting a flexible circuit board (FPC);
A second stage spaced apart from the first stage, one end of which is opposite to one end of the first stage, and fixedly supports the panel;
An image acquisition unit that acquires image information by photographing the flexible circuit board (FPC) and the panel; And
A control unit that receives image information of the flexible circuit board (FPC) and the panel from the image acquisition unit, calculates an alignment error, and controls movement and rotation of the first stage and the second stage according to the calculated alignment error ;
Including,
The center of rotation of the first stage is located on an adjacent surface of the first stage, and the center of rotation of the second stage is located on an adjacent surface of the second stage,
Stage alignment device for manufacturing display devices.
According to claim 1,
The control unit calculates the alignment error by calculating a distance from an adjacent surface of the first stage to an adjacent surface of the second stage by analyzing the image information, and a stage alignment device for manufacturing a display device.
According to claim 1,
A stage alignment device for manufacturing a display device, wherein a rotation center point of the first stage and a rotation center point of the second stage are positioned on the same straight line on a plane.
According to claim 1,
The control unit controls the movement and rotation of the first stage and the second stage until the adjacent surfaces of the first stage and the adjacent surfaces of the second stage are parallel to each other.
According to claim 1,
The control unit moves at least one of the first stage or the second stage in a thickness direction such that the upper end of the adjacent surface of the first stage and the upper end of the adjacent surface of the second stage are on one plane, Stage alignment device for manufacturing display devices.
According to claim 1,
The first stage,
A first driving unit moving the first stage in the x-axis direction;
A second driving unit moving the first stage in the y-axis direction; And
A third driving unit moving the first stage in the z-axis direction orthogonal to the x-axis and the y-axis direction;
Stage alignment device for manufacturing a display device comprising a.
The method of claim 6,
The first driving unit,
A display device including a 1-1 driving unit for moving the upper side of the first stage in the x-axis direction and a 1-2 driving unit for moving the lower side of the first stage in the x-axis direction. Manufacturing stage alignment device.
The method of claim 6,
The second driving unit,
A display device comprising a 2-1 driving unit for moving the left side of the first stage in the y-axis direction and a 2-2 driving portion for moving the right side of the first stage in the y-axis direction. Manufacturing stage alignment device.
According to claim 1,
The second stage,
A fourth driving unit moving the second stage in the x-axis direction;
A fifth driving unit moving the second stage in the y-axis direction; And
A sixth driving unit moving the second stage in the z-axis direction orthogonal to the x-axis and the y-axis direction;
Stage alignment device for manufacturing a display device comprising a.
The method of claim 9,
The fourth driving unit,
A display device including a 4-1 driving unit for moving the upper side of the second stage in the x-axis direction and a 4-2 driving unit for moving the lower side of the second stage in the x-axis direction. Manufacturing stage alignment device.
The method of claim 9,
The fifth driving unit,
A display device comprising a 5-1 driving unit for moving the left side of the second stage in the y-axis direction and a 5-2 driving portion for moving the right side of the second stage in the y-axis direction. Manufacturing stage alignment device.
(A) the first stage is fixed to support the flexible circuit board (FPC);
(b) the second stage fixing and supporting the panel;
(c) acquiring image information by photographing the first stage and the second stage by an image acquisition unit;
(d) a control unit receiving the image information from the image acquisition unit and calculating an alignment error; And
(e) the controller controlling movement and rotation of the first stage and the second stage according to the calculated alignment error;
Stage alignment method for manufacturing a display device comprising a.
The method of claim 12,
The second stage is spaced apart from the first stage and one end is opposite to one end of the first stage adjacent to each other,
The center of rotation of the first stage is located on an adjacent surface of the first stage, and the center of rotation of the second stage is located on an adjacent surface of the second stage,
Stage alignment method for manufacturing a display device.
The method of claim 12,
In the step (d), the control unit,
Calculating the distance from the adjacent surface of the first stage to the adjacent surface of the second stage by analyzing the image information to calculate the alignment error,
Stage alignment method for manufacturing a display device.
The method of claim 12,
In the step (e), the control unit,
A stage alignment method for manufacturing a display device, wherein movement and rotation of the first stage and the second stage are controlled until adjacent surfaces of the first stage and adjacent surfaces of the second stage are parallel to each other.
The method of claim 12,
In the step (e), the control unit,
A stage for manufacturing a display device that moves at least one of the first stage or the second stage in a thickness direction such that an upper end portion of the adjacent surface of the first stage and an upper portion of the adjacent surface of the second stage are positioned on one plane. Alignment method.
The method of claim 12,
In the step (e), the control unit,
The first stage is moved in the x-axis direction through the first driving unit, the first stage is moved in the y-axis direction through the second driving unit, or the first driving unit and the second driving unit are simultaneously controlled to A stage alignment method for manufacturing a display device, wherein the first stage is rotated at a predetermined angle in the left or right direction.
The method of claim 12,
In the step (e), the control unit,
The second stage is moved in the x-axis direction through the fourth driving unit, the second stage is moved in the y-axis direction through the fifth driving unit, or the fourth driving unit and the fifth driving unit are simultaneously controlled to A stage alignment method for manufacturing a display device, wherein the second stage is rotated at a predetermined angle in the left or right direction.
The method of claim 12,
In the step (e), the control unit,
A stage alignment method for manufacturing a display device, wherein the first stage is moved in the z-axis direction through the third driver, or the second stage is moved in the z-axis direction through the sixth driver.
The method of claim 19,
In the step (e), the control unit,
The first stage is moved in the z-axis direction through the third driving unit, or the second stage is moved in the z-axis direction through the sixth driving unit, so that the upper end in the thickness direction of the first stage and the thickness of the second stage are moved. A stage alignment method for manufacturing a display device, wherein the upper end portion of the direction is positioned on the same straight line.

Images