JP2004272242A - Automatic liquid crystal panel grasping apparatus and method for the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an automatic liquid crystal panel grasping apparatus of a panel carrier for an automatic probe unit capable of automatically grasping a liquid crystal panel even if the size of the liquid crystal panel is changed. <P>SOLUTION: An automatic liquid crystal panel grasping apparatus 150 of the panel carrier for an automatic probe unit has transfer carriage transfer screws 152, a transfer carriage bracket block 156 which is transferred along the respective screws 152, a transfer carriage 162 which is mounted with grippers 158 and 159 coupled to the block 156 to clamp the liquid crystal panel, a transfer carriage moving distance varying means 160 which adjusts the moving distance of both ends of the transfer carriage 162 at both ends of the transfer carriage 162, detecting means 157 which are attached to the grippers 158 and 159 and detect the sizes etc., of the liquid crystal panel, and a control section which controls the operation of the screws 152 and the gripper 159 according to the detection signals of the detecting means 157. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

  The present invention relates to a liquid crystal panel automatic holding device and a method for mounting the same on a panel carrier for an auto probe unit, and more particularly, to a liquid crystal panel whose size is changed by changing a model of a liquid crystal panel to be inspected. The present invention relates to a liquid crystal panel automatic gripping device and a method thereof that can automatically grip a liquid crystal panel that is loaded while being shifted.

  2. Description of the Related Art As is well known, a flat glass (Flat display) such as a TFT-LCD (Thin Film Transistor-Liquid Crystal Display), a PDP (Plasma Display Panel), an EL (Electro Luminescent), and the like are used in a large-sized flat panel display manufacturing field. And thinner. A lighting inspection is performed on a liquid crystal panel manufactured using such a glass substrate at the last stage of the manufacturing process. The lighting inspection of the liquid crystal panel is performed by inspecting each of the data line and the gate line of the liquid crystal panel for disconnection and hue by using an auto probe unit, and otherwise by visual inspection using a microscope or the like. .

  FIG. 1 shows a horizontal auto probe unit as a representative example. As shown in the figure, the auto probe unit has a main body 12 mounted on an entire surface thereof inclined at a predetermined angle, for example, 60 °, and an object to be inspected (hereinafter, referred to as a “liquid crystal panel P”). ) Is supplied, and the liquid crystal panel P supplied from the liquid crystal panel supply unit 20 is loaded and illuminated by a light source (not shown) provided on the bottom surface, thereby improving the manufacturing process. An inspection unit 30 for inspecting the generated unevenness of the liquid crystal panel P or disconnection and hue of the data line and the gate line; and at least two units for transporting the liquid crystal panel P to the liquid crystal panel supply unit 20 and the inspection unit 30 And a panel carrier 60 composed of a transfer device. The liquid crystal panel supply unit 20 is provided with a sub-table 50 for selectively waiting the supplied liquid crystal panel P in accordance with the two-stage panel carrier 60. While the liquid crystal panel P is moved to the inspection table 32 of the inspection unit 30 by one of the transport devices and the inspection is performed, a new uninspected liquid crystal panel P is loaded into the sub-table 50. When the inspection of the liquid crystal panel P is completed, one of the transporting devices unloads the inspected liquid crystal panel P from the inspection table 32, and then moves the liquid crystal panel P again to the sub-table 50 of the supply unit 20, while performing another transport. The apparatus causes the new untested liquid crystal panel P loaded on the sub-table 50 to be transported to the inspection table 32 of the inspection unit 30. By repeating such a process, the inspection of the liquid crystal panel P is continuously performed.

  As shown in FIGS. 2 and 3, such a panel carrier 60 is provided with a pair of guide rails 62 and 64 that are disposed to face each other over the entire length of the liquid crystal panel supply unit 20 and the inspection unit 30. , A pair of guide rails 62 ′, 64 ′ which are disposed below and are opposed to and parallel to the guide rails 62, 64, and a pair of guide rails 62, 64, or First and second transfer arms 70,80 that move horizontally away from each other along a pair of guide rails 62 ', 64' and are connected to ends of the respective transfer arms 70,80. A plurality of transfer bodies 61, 63, 65, 67 for respectively moving the first and second transfer arms 70, 80 horizontally by moving along the respective guide rails, and the first and second transfer arms 70,80 upper and lower The conveying member, which is connected to one of, for example, is combined with the lower of the conveying member 65 and 67 includes a plurality of drive means 90. for movably driving the 該移 Okukarada 65,67.

  As shown in FIG. 2, the first transfer arm 70 is a square frame member to which two pairs of guides 71 and 71 ′ provided vertically from the upper and lower left and right ends to the inside of the transfer arm 70 are attached. 72, a pair of upper and lower moving blocks 76 movably mounted vertically along the guides 71 and 71 ′, and a plurality of grippers 75 installed on the inner end side of each moving block 76 to grip the liquid crystal panel P. Consists of The moving block 76 is configured to advance in a vertically symmetrical direction by an air cylinder (not shown) and to grip the liquid crystal panel P by a fitting method using a gripper 75. The configuration of the second transfer arm 80 is the same as the configuration of the first transfer arm 70, and the details are omitted.

  However, the moving blocks 76 and 78 of the conventional panel carrier 60 having this configuration manually take the guides 71, 71 ', and 73 into account in consideration of the size corresponding to the model of the liquid crystal panel P on which the lighting inspection is to be performed. , 73 'are moved by moving the moving blocks 76, 78 by the number of eyes, and are set in advance before the operation of the equipment. For this reason, when the size of the liquid crystal panel P changes according to the change of the model, there is a problem that the setting of the equipment must be changed manually again according to the data of the model.

  Further, since the liquid crystal panel P is configured to be gripped by being sandwiched between the grippers 75, the liquid crystal panel P may be slightly shifted even when the same liquid crystal panel P is loaded. In this state, when transferring to another stage, for example, when transferring to the inspection unit 30 for lighting inspection, the inspection position of the liquid crystal panel P is changed, whereby a different inspection result is obtained, and the reliability of the inspection is improved. Performance is reduced. For small LCD panels, even if there is no problem with the reliability of the inspection, the change in the inspection position at the peripheral edge increases even if the angle of the center of the panel is slightly deviated, even if the LCD panel has recently become larger and larger. As a result, there was a serious problem in reliability during lighting inspection.

  Furthermore, since the gripper 75 provided in the above-mentioned liquid crystal panel automatic gripping device is fixed to the inner central portion of the moving blocks 76 and 78, when gripping and transporting a large liquid crystal panel of 30 inches or more, There is also a disadvantage that the side edge of the liquid crystal panel is bent, or the liquid crystal panel causes repetitive vibration, and the edge is damaged.

  The present invention has been made in view of the above circumstances, and an auto probe unit capable of automatically gripping a liquid crystal panel even when its size is changed by changing the model of the liquid crystal panel. It is an object of the present invention to provide a liquid crystal panel automatic gripping device for a panel carrier.

  Another object of the present invention is to provide a liquid crystal panel automatic gripping device of a panel carrier for an auto probe unit, which can automatically grip a liquid crystal panel that is loaded while being shifted.

  Still another object of the present invention is to provide a panel carrier for an auto probe unit, which can automatically grip the liquid crystal panel even if the model of the liquid crystal panel is changed or the panel is loaded with a shift. It is to provide a gripping method that can be performed.

  It is still another object of the present invention to prevent a side edge of a liquid crystal panel from being bent or causing a repetitive vibration of the liquid crystal panel when the large liquid crystal panel is gripped and transported, thereby preventing the edge from being damaged. Another object of the present invention is to provide a liquid crystal panel automatic holding device for a panel carrier for an auto probe unit, which can be adapted to liquid crystal panels of various sizes.

  In order to achieve the above object, according to the present invention, there is provided an automatic liquid crystal panel gripping device for a panel carrier for an auto probe unit, wherein the liquid crystal panel is vertically provided on both left and right ends of an upper portion and a lower member of a frame. A plurality of transfer table transfer screws that can be individually rotated forward and backward by driving a drive source, a transfer table bracket block coupled to transfer along the respective transfer table transfer screws, and the transfer table bracket block And a pair of upper and lower transfer tables to which a pair of fixed grippers and another pair of movable grippers are attached, which are coupled to one end of the liquid crystal panel and are separated by a predetermined distance so as to grip the liquid crystal panel; Transfer table moving distance variable means attached to both ends of the transfer table to adjust the movement distance of both ends of the transfer table; and Detection means for detecting the size and displacement of the panels in accordance with the detection signal the detection unit, characterized in that it comprises a control unit for individually controlling the operation of the transfer table feed screw and the moving gripper.

  Further, according to the present invention, in the method for automatically holding a liquid crystal panel on a panel carrier for an auto probe unit, the method includes the steps of: loading a liquid crystal panel on the panel carrier; and detecting a degree of displacement of the loaded liquid crystal panel. Determining the degree of displacement of the loaded liquid crystal panel by the control unit based on the detection result, and using a plurality of grippers for gripping the liquid crystal panel, Gripping a panel, wherein a moving distance of each of the plurality of grippers to the loaded liquid crystal panel is determined based on a determination of a degree of displacement of the loaded liquid crystal panel. .

  According to the liquid crystal panel automatic gripping device of the panel carrier for the auto probe unit of the present invention, the size and displacement of the loaded liquid crystal panel model can be automatically detected and the liquid crystal panel can be gripped. Also, a new model having no data for the liquid crystal panel model can be easily and automatically grasped.

  Furthermore, even if the model of the liquid crystal panel to be inspected is changed, the equipment itself automatically grips the changed liquid crystal panel, so that setting is not particularly troublesome and productivity is improved.

  Further, according to the present invention, it is possible to store data for a new model obtained while automatically grasping a liquid crystal panel of a new model, and by applying this stored data to an auto probe unit. In the case where a liquid crystal panel of a similar model is loaded later, a separate setting time for the liquid crystal panel can be reduced.

  Further, according to the present invention, by attaching the moving gripper to the transfer table, when the large liquid crystal panel is gripped and transferred, the measuring end of the liquid crystal panel is bent or the liquid crystal panel causes repetitive vibration. It is possible to prevent the end portion from being damaged, and it is possible to cope with liquid crystal panels of various sizes.

  Hereinafter, the details of the liquid crystal panel automatic holding device of the panel carrier for the auto probe unit according to a preferred embodiment of the present invention will be described with reference to FIGS.

  4 to 6 show a configuration of a panel carrier for a vertical type auto probe unit according to a preferred embodiment of the present invention. As shown in the figure, the auto probe unit according to a preferred embodiment of the present invention is a vertical type in which portions corresponding to a liquid crystal panel supply unit 220 and an inspection unit 230 are vertically arranged. The auto probe unit according to a preferred embodiment of the present invention includes a liquid crystal panel supply unit 220 to which the liquid crystal panel P to be inspected is supplied and an inspection for inspecting the liquid crystal panel P supplied from the liquid crystal panel supply unit 220. A unit 230 and a panel carrier 260 including at least two transfer devices for transferring the liquid crystal panel P to the supply unit 220 and the inspection unit 230. Further, the liquid crystal panel supply unit 220 is provided with a sub-table 250 for selectively waiting the supplied liquid crystal panel P in accordance with the two-stage panel carrier 260 so that the inspection of the liquid crystal panel P can be continuously performed. It can be carried out.

  The panel carrier for the vertical type auto probe unit having such a configuration includes a rectangular frame-shaped base portion 100 on which the liquid crystal panel supply unit 220 and the inspection unit 230 are respectively disposed vertically, and both ends of the base unit 100. , Two pairs of transfer screws 110 and 110 ′ disposed in the upper and lower stages adjacent to the hopper, a driving source 120 for rotating the transfer screws 110 and 110 ′ in forward and reverse directions, and upper and lower transfer screws 110 and 110 ′, respectively. , And first and second transfer devices 130 and 140 coupled to each other, and an automatic liquid crystal panel gripping device 150 attached to each of the transfer devices 130 and 140.

  Since the first transport device 130 and the second transport device 140 have the same configuration, only the configuration of the first transport device 130 will be described for convenience of description. As shown in FIG. 7, the first transfer device 130 is configured such that the substantially rectangular frame 132 provided in the base unit 100 and the frame 132 move up and down by forward and reverse rotation of the transfer screws 110 and 110 ′. , A bracket part 134 attached to both sides of the frame 132 and coupled to the transfer screws 110 and 110 '.

  Also, the liquid crystal panel automatic gripping device 150 is provided vertically at the left and right ends of the upper and lower members inside the frame 132, and can be individually rotated forward and reverse by the driving of each drive source 154; The transfer table bracket block 156 connected to transfer the transfer table along each transfer table transfer screw 152 is connected to the ends of the left and right transfer table bracket blocks 156, and the liquid crystal panel P is previously gripped. A pair of upper and lower transfer tables 162 provided with a pair of fixed grippers 158 and another pair of moving grippers 159 separated by a predetermined distance, and attached to both ends of each transfer table 162, and the movement distance of both ends of the transfer table 162 is determined. The transfer table moving distance variable means 160 for adjusting, and each gripper 158, 159 for detecting the size and displacement of the liquid crystal panel P. A detection means 157 mounted, and a control unit for controlling the operation of the drive source 154 so as to individually drive the transport stage feed screw 152 in accordance with the detection signal of the detecting means 157 (not shown).

  The transfer table moving distance varying means 160 is a roller bearing assembly, and is provided on a transfer table bracket block 156 attached to both ends of the transfer table 162 as shown in FIG. A base 172 is provided, a shaft 174 connected to the base 172, and a rotating cross roller bearing 176 connected to the shaft 174. , A cross roller bearing 173 for linear movement attached to one side surface of the base 172, and a support housing 175 sandwiched between the base 172 and the shaft 174. On the other hand, the configuration of the transfer table moving distance variable means 160 attached to the upper and lower transfer tables 162 is the same, respectively, but the left and right transfer table moving distance variable means 160 are located in reverse.

  As shown in FIG. 9, a pair of fixed grippers 158 that are separated by a predetermined distance so as to grip the liquid crystal panel P are provided at the center of the rear surface of the transfer table 162. On both left and right sides, a pair of moving grippers 159 that can move along gripper guide rails 190 that are mounted on the transfer table 162 in the longitudinal direction are provided.

  Although the detecting means 157 is not shown in detail, it is preferable that two or more photo sensors provided integrally with the light receiving sensor and the light emitting sensor are installed on the upper and lower portions of the panel, that is, on each of the upper and lower transfer tables 162. preferable. In another embodiment, the degree of displacement of the liquid crystal panel P can be naturally detected by separating the light receiving sensor and the light emitting sensor vertically while holding the liquid crystal panel therebetween. Further, when the liquid crystal panel P shifts around the liquid crystal panel P, a contact sensor that generates an electric signal by contacting the liquid crystal panel P can be used.

  The panel carrier for a vertical type auto probe unit according to the embodiment of the present invention having the above configuration automatically grips the liquid crystal panel P as described later.

  When a new model of the liquid crystal panel P is loaded into the liquid crystal panel supply unit 220, the operator inputs data relating to the changed model of the liquid crystal panel P to the control unit provided in the inspection equipment. The operation of the auto probe unit changes depending on whether or not the model data of the liquid crystal panel P input by the operator already exists in the control unit.

  When the model data does not exist in the control unit, the transfer table 162 is transferred by the drive source 154, and the liquid crystal panel P is detected by the detection means 157 attached to the fixed gripper 158.

  When the liquid crystal panel is not detected by the detection unit 157, the control unit (not shown) operates each drive source 154 to individually drive the transfer table transfer screws 152, and then the transfer table transfer screws 152 When individually rotated, the transfer table bracket block 156 and the transfer table 162 move toward the liquid crystal panel P. If the transfer means 162 approaches the liquid crystal panel P and the detecting means 157 attached to the pair of fixed grippers 158 simultaneously detects the surface of the liquid crystal panel P, the liquid crystal panel P is loaded without displacement. Therefore, the control unit stops the operation of the drive source 154 so as to stop the rotation of the transfer table transfer screw 152. At this time, the moving distance data of the transfer table 162 is transmitted to and stored in the control unit, and is used later when a liquid crystal panel P of a similar model is loaded on the transfer device. Next, the moving grippers 159 attached to both sides of the fixed gripper 158 move left and right, respectively, so that the detecting means 157 attached to the moving gripper 159 detects the surface of the liquid crystal panel P. Until the detecting means 157 attached to the moving gripper 159 cannot detect the liquid crystal panel P, data of the width of the liquid crystal panel P is obtained based on the distance moved by the moving gripper 159 and transmitted to the control unit. . The control unit calculates the position of the movable gripper 159 that can be safely gripped by the liquid crystal panel P to be loaded, and sends a control signal to a drive source 191 provided integrally with the movable gripper 159 so that the movable gripper 159 is determined in advance. Move to position. Actuators 192 and 192 ′ which are installed on the inner surface of the transfer table 162 and are provided with grippers 158 and 159 at the ends are operated, and the fixed gripper 158 and the movable gripper 159 move forward to grip the liquid crystal panel P. Thereby, the holding of the liquid crystal panel P is completed.

  On the other hand, when the detecting means 157 attached to one fixed gripper 158 detects the liquid crystal panel and the detecting means 157 of the other fixed gripper 158 does not detect the liquid crystal panel, the liquid crystal panel is not detected. This means that the detection means 157 is shifted by an interval until the liquid crystal panel is detected. In addition, since one of the liquid crystal panels is detected, the control unit stops the operation of the driving source 154 so as to stop the rotation of the detected transfer table transfer screw 152. After that, the moving distance of both ends of the transfer table 162 is adjusted by the transfer table moving distance variable means 160. That is, the cross roller bearing 176 for rotation is mounted on both sides of the transfer table 162, and the cross roller bearing 173 for linear movement is mounted on one of the transfer tables 162. When the drive source 154 is operated so that only the transfer screw 152 rotates, the transfer table bracket block 156 that cannot be detected is moved around the transfer table bracket block 156 of the transfer table transfer screw 152 that has stopped moving. Lower to correct the gap. Next, after the moving gripper 159 attached to the transfer table 162 operates in the same manner as described above, the liquid crystal panel P is gripped together with the fixed gripper 158, thereby completing the gripping of the liquid crystal panel P.

  When the data input by the operator already exists in the control unit, each drive source 154 is driven in accordance with the data and the transfer table transfer screw 152 is rotated to adjust the movement distance between both ends and transfer the data. The table 162 is moved to set the distance between the ends of the grippers 158 and 159 and the end of the loaded liquid crystal panel P to be, for example, 2 to 5 mm. After the transfer table 162 is set, the actuator is installed on the inner surface of the transfer table 162, and an actuator provided with grippers 158 and 159 at its ends is operated, and the grippers 158 and 159 move forward to grip the liquid crystal panel P. Then, the holding of the liquid crystal panel P is completed. At this time, when the liquid crystal panel P is not properly gripped as a result of operating based on the data present in the control unit, for example, the liquid crystal panel P is loaded with a displacement, and some grippers do not grip the liquid crystal panel P. In this case, all the grippers 158 and 159 release the gripping, and after the transfer table 162 is retracted to the original position, the gripping of the liquid crystal panel P is attempted again as in the case where the input data does not exist in the control unit. Will be.

  For example, as shown in FIG. 10, when the small liquid crystal panel P is supplied to the center of the frame 132 of the supply unit 220 without being shifted, the liquid crystal panel is not detected by any of the detection means 157, When the respective drive sources 154 are operated and the respective transfer stage transfer screws 152 are simultaneously rotated, the upper and lower transfer stages 162 move from the dotted line position to the solid line position in parallel with the frame 132, and thereafter, the gripper 158 , 159 to hold the liquid crystal panel P.

  On the other hand, as shown in FIG. 11, when a large liquid crystal panel P is supplied to the lower part of the frame 132 of the supply part 220 without being displaced, the liquid crystal panel P is detected by the upper detecting means 157. Since the pair of driving sources 154 on the upper side are operated and are not detected, when the respective transfer stage transfer screws 152 are simultaneously rotated, the upper transfer stage 162 moves from the dotted line position to the solid line position in parallel with the frame 132, and thereafter, The liquid crystal panel P is gripped by the grippers 158 and 159.

  Further, in contrast to this, as shown in FIG. 12, when a small liquid crystal panel P is supplied to the center of the frame 132 of the supply unit 220 with a shift, the liquid crystal panel P Since the panel is not detected, the drive sources 154 on the upper, lower, left and right sides are operated to rotate the respective transfer table transfer screws 152 at the same time until the respective detection means 157 detects the liquid crystal panel. Next, when any of the detection means 157 detects the liquid crystal panel, the rotation of the corresponding transfer screw 152 detected is stopped. As a result, the transfer table bracket block 156 that has been moving along the transfer screw 152 also stops.

  After that, by the time the other detecting means 157 detects the surface of the liquid crystal panel P, the other moving table bracket block 156 is moved down by the moving table moving distance variable means 160 to correct the displacement, so that the moving table 162 is corrected. Is shifted by the angle θ. As described above, since all of the upper and lower transfer tables 162 are rotated by the shifted angle θ of the liquid crystal panel P, the gripper 158 or 159 grips the liquid crystal panel P. It will be possible to grasp it in an appropriate manner.

  As described above, the process of transporting the liquid crystal panel P loaded from the sub-table to the panel carrier from the liquid crystal panel supply unit 220 to the inspection unit 230 is performed as follows.

<Example 1>
After transporting the liquid crystal panel P held by the panel carrier in a shifted state to the inspection table of the inspection unit 230, the data of the liquid crystal panel P held by the shift is transmitted to the control unit. The control unit sends a control signal to the inspection table 232, and the inspection table 232 responds to the displacement of the liquid crystal panel loaded on the panel carrier, and receives the liquid crystal panel in that state. After the inspection of the liquid crystal panel P is completed by the inspection table 232, the liquid crystal panel in a displaced state is gripped by the panel carrier as it is, and then transported to the liquid crystal panel supply unit 220. Thereafter, the data of the liquid crystal panel loaded off the panel carrier is sent to the control unit, which sends a control signal to the sub-table 250, and the sub-table 250 sends the control signal to the liquid crystal panel loaded on the panel carrier. Receive the liquid crystal panel according to the deviation.

<Example 2>
The data of the liquid crystal panel held by the panel carrier is sent to the control unit, and the control unit sends a control signal to the drive source 154 of the first and second transfer devices 130 and 140 of the panel carrier. By rotating the transfer table transfer screws 152 connected to the driving source 154 to adjust the shift of the transfer table 162, the liquid crystal panels P that have been shifted and gripped are aligned. The aligned liquid crystal panels P are conveyed from the liquid crystal panel supply unit 220 to the inspection unit 230, loaded on the inspection table 232 of the inspection unit 230, and inspected. Thereafter, the inspected liquid crystal panel is transported again from the inspection unit 230 to the liquid crystal panel supply unit 220 in a state where the liquid crystal panel is already aligned, and the sub table 250 receives the liquid crystal panel.

  In the above description, the panel carrier for an auto probe unit of the present invention has been exemplified as a vertical type. However, the present invention is not limited to this. For example, like the panel carrier for a horizontal type auto probe unit, the present invention is applicable. Those skilled in the art will be able to make various modifications without departing from the scope of the claims.

FIG. 11 is a perspective view illustrating a configuration of a conventional auto probe unit. FIG. 2 is a plan view illustrating a configuration of a panel carrier in the unit in FIG. 1. FIG. 3 is a side view of the panel carrier of FIG. 2. FIG. 1 is a perspective view showing a configuration of a vertical auto probe unit according to a preferred embodiment of the present invention. FIG. 5 is a plan view illustrating a configuration of a panel carrier of the auto probe unit in FIG. 4. FIG. 6 is a side view of the panel carrier of FIG. 5. FIG. 6 is a plan view showing the transfer device of FIG. 5. FIG. 3 is an exploded perspective view illustrating a configuration of a transfer table moving distance variable unit. It is a rear view of the transfer stand which shows arrangement of a fixed gripper and a movable gripper. FIG. 10 is an exemplary view showing a state in which a panel carrier according to a preferred embodiment of the present invention grips liquid crystal panels of various models. FIG. 11 is a view similar to FIG. FIG. 12 is a view similar to FIG.

Explanation of reference numerals

  100: base unit, 110, 110 ': transfer screw, 120: drive source, 130, 140: transfer device, 132: frame, 134: bracket unit, 150: liquid crystal panel automatic gripping device, 152: transfer table transfer screw, 154 .., Drive source, 156, transfer table bracket block, 157, detection means, 158, fixed gripper, 159, moving gripper, 160, transfer table moving distance variable means, 162, transfer table.

Claims (14)

A liquid crystal panel automatic holding device for a panel carrier for an auto probe unit,
A plurality of transfer table transfer screws that are vertically installed on both left and right ends of the upper and lower members of the frame and can be individually rotated forward and backward by driving each drive source,
A carriage bracket block coupled to transport along each of the carriage transport screws;
A pair of upper and lower transports to which a pair of fixed grippers and another pair of movable grippers, which are coupled to one end of the transport bracket block and are separated by a predetermined distance so as to grip a liquid crystal panel, are attached. Table and
A transfer table moving distance variable means attached to both ends of the transfer table to adjust a movement distance of both ends of the transfer table;
A detection unit attached to the gripper and configured to detect a size or displacement of the liquid crystal panel;
A controller for individually controlling the operations of the transfer table transfer screw and the moving gripper in accordance with a detection signal of the detection means.   The transfer table moving distance variable means is a roller bearing assembly provided on the transfer table bracket block attached to both ends of the transfer table, and a base unit integrally provided on the transfer table bracket block. And a shaft coupled to the base, and a cross roller bearing for rotation coupled to the shaft, one of the transfer table moving distance variable means attached to both ends of the transfer table, 2. The device according to claim 1, further comprising: a cross roller bearing for linear movement attached to one side surface of the base portion; and a support housing sandwiched between the base portion and the shaft portion. 3. LCD panel automatic gripping device.   The pair of fixed grippers are separated by a predetermined distance so as to grip a liquid crystal panel at the center of the inner end of the transfer table, and the pair of movable grippers are provided on both left and right sides of the fixed gripper. The liquid crystal panel automatic gripping device according to claim 1, wherein   4. The liquid crystal panel automatic holding device according to claim 3, wherein the movable gripper is movable along a gripper guide rail provided on the transfer table in a longitudinal direction.   2. The liquid crystal panel automatic grip according to claim 1, wherein the detection unit is two or more photo sensors integrally provided with a light receiving sensor and a light emitting sensor attached to each of the upper and lower transfer tables. apparatus.   2. The liquid crystal panel automatic gripping device according to claim 1, wherein the detecting means is a photo sensor in which the light receiving sensor and the light emitting sensor sandwich the liquid crystal panel and are vertically separated from each other.   The liquid crystal according to claim 1, wherein the detection unit is a contact sensor that generates an electrical signal by contacting the liquid crystal panel when the liquid crystal panel shifts around the liquid crystal panel. Panel automatic gripping device. A liquid crystal panel automatic holding device for a panel carrier for an auto probe unit,
A plurality of transfer table transfer screws that are arranged at the inner end of the frame and are individually rotatable forward and backward,
A carriage bracket block coupled to transport along each of the carriage transport screws;
A plurality of transfer tables coupled to the transfer table bracket block and including a plurality of grippers for gripping a liquid crystal panel;
A transfer table moving distance variable means attached to both ends of each of the transfer tables to adjust a movement distance of both ends of the transfer table;
A plurality of detecting means for detecting the size and displacement of the liquid crystal panel,
A controller for individually driving the transfer table transfer screws in accordance with a detection signal of the detection means.   The transfer table moving distance variable means attached to one end of each of the transfer tables is a roller bearing assembly, and includes a cross roller bearing for rotation. 9. The automatic liquid crystal panel gripping device according to claim 8, further comprising a cross roller bearing for linear movement and a cross roller bearing for linear movement.   9. The apparatus according to claim 8, wherein the gripper comprises one or more fixed grippers for holding a liquid crystal panel at an inner end of the transfer table, and a plurality of movable grippers provided on both left and right sides of the fixed gripper. The liquid crystal panel automatic gripping device as described in the above. A liquid crystal panel automatic holding device for a panel carrier for an auto probe unit,
A plurality of transfer means arranged to be movable in parallel along the inner surface of the frame,
A plurality of transfer tables coupled to the transfer means and provided with a plurality of grippers for holding a liquid crystal panel,
A transfer table moving distance variable means attached to both ends of each of the plurality of transfer tables to adjust a movement distance of both ends of the transfer table,
A plurality of detecting means for detecting the size and displacement of the liquid crystal panel,
A controller for individually driving the transfer means in response to a detection signal from the detection means. A method for automatically holding a liquid crystal panel of a panel carrier for an auto probe unit,
Loading a liquid crystal panel on the panel carrier;
Detecting the degree of displacement of the loaded liquid crystal panel;
Based on the detection result, the control unit determines the degree of displacement of the loaded liquid crystal panel,
Gripping the loaded liquid crystal panel using a plurality of grippers for gripping the liquid crystal panel,
A moving distance of the plurality of grippers to the loaded liquid crystal panel is determined based on a determination of a degree of displacement of the loaded liquid crystal panel. Transporting the liquid crystal panel to an inspection table for inspecting the state of the liquid crystal panel in a state where the liquid crystal panel is loaded with being shifted to the panel carrier,
Supplying the determination data of the degree of displacement of the liquid crystal panel to the inspection table by the control unit;
13. The liquid crystal panel automatic grip according to claim 12, further comprising: gripping the liquid crystal panel conveyed to the inspection table in the same manner as the degree of displacement in the panel carrier based on the determination data. Method. Correcting the displacement of the liquid crystal panel if there is a displacement in the liquid crystal panel loaded on the panel carrier after the liquid crystal panel holding step;
13. The method according to claim 12, further comprising the step of: transporting the liquid crystal panel whose displacement has been corrected to the inspection table for inspecting a state of the liquid crystal panel.

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