TWI311929B - Head unit for use in a paste dispenser - Google Patents

Description

Γ 311929 IX. Description of the Invention: [Technical Field] The present invention relates to a head unit for a dispenser, in particular, a device that is horizontally rotatable or has an angle with the X-axis. The head unit of the detector. [Prior Art] Lu, has a flat panel display technology that makes image displays thinner than conventional TVs and conventional displays using cathode ray tubes. Flat-panel displays are usually thinner than a centimeter (4 inches). Flat-panel displays that require continuous refreshing include: • liquid crystal displays (LCDs), plasma displays, field emission displays (FEDs), organic light-emitting diode displays (organic Hght emitting diode displays, OLEDs), surface-conduction Electron-emitter Displays (SEDs), nano-emissive displays (NEDs), and electroluminescent displays (ELDs) . A liquid crystal display is a thin, flat display device consisting of any number of color or monochrome pixel arrays located in front of a light source or mirror. Liquid crystal displays are widely used due to low power consumption.

4TOP-EN/06012TW : OP06H0049-TW 1311929 The liquid crystal panel is used for the manufacture of liquid crystal displays, as described below. The pattern of the color filter and the common electrode is formed on the upper glass substrate. A pattern of a thin film transistor (TFT) and a pixel electrode is formed on the lower substrate with respect to the upper substrate. An alignment layer is disposed on the upper and lower substrates

^. The alignment layer is mbbed such that liquid crystal molecules create a pretilt angle and direction between the two alignment layers. The glue pattern is formed on any of the upper and lower glass substrates to seal the upper layer of the glass substrate. Thereafter, the liquid crystal is stored between the two glass substrates. After that, the upper layer and the lower layer are formed to form a liquid crystal panel. The dispenser is used to form a gel pattern on a glass substrate. Dispenser = the table on which the substrate is placed, with nozzles (via nozzle

, the head unit of the cloth colloid on the glass substrate, and the head supporting unit for supporting the head. a When the relative position between the glass substrate and the nozzle changes, the dispenser coats the adhesive pattern on the _ substrate. By moving the coating up perpendicularly to the jade table (moving), the dispenser changes the distance between the glass substrate and the nozzle. That is, the L stage moves in the γ direction, and the coating head moves in the direction. The dispenser can move the head unit in the γ-axis direction by moving the head supporting unit in the Y-axis direction.

4TOF-EN/06012TW ; OP06H0049-TW

Bll929 As shown in Fig. 1, the sensor i is used to inspect the glue formed on the glass substrate. Sensor 1 area. Sensing ϋ 1 can be installed on the head of the movable head. It can also be used in the head of the movable head. The launch is shown in Figure 1. From the lens 2 P. Therefore, the glue pattern can be measured. ::: ί: The pattern of the glue on the substrate Direction:::::: Gel type. It is perpendicular to the scanning area, and the face area of the guzzle pattern is positive: check the glue pattern in the γ-axis direction. It can be installed with two sensors in the head unit, and the solution is set to r σ ′ and the other is located in the γ axis direction. However, this % method will increase the cost of purchasing a sensor. SUMMARY OF THE INVENTION Therefore, one of the objects of the present invention is to enable the head unit to be measured.

4r〇P-EN/〇6〇l2TW ; 〇P〇6H0049^TW The area of the MY axis direction of the MY axis direction of the rubber pattern of the section of the U-the aspect is to provide the head unit for the nozzle on the substrate _ the distance When passing through the head colloid on the substrate of the dispenser. The main purple spray cloth on the head sheet - Shuo early 兀匕 3 master body, sensor and crane early 疋. Head body lining support = scan to form a gel pattern formed on the substrate in the amount of two patterns = =. The driver activates the sensor to rotate the water relative to the head body to measure the slice area in the X-axis direction and the γ direction, respectively. The other is to provide a head for the dispenser. =* When changing the relative distance between the nozzle and the substrate, the dispenser passes the head: the nozzle is coated with the gel on the substrate. The head unit includes a head body, a sensing H, and a driving unit. The head field is scanned at a specific angle with the χ_γ axis to form a substrate ί / pattern to measure the gel pattern on the X-axis and γ-axis. t will have a clearer understanding of the purpose, features, viewpoints and advantages of this X month month by the detailed description and the corresponding drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The detailed description of the preferred embodiments of the present invention is set forth in the accompanying drawings.

4TOP-EN/06012TW; OP06H0049-TW 1311929 Fig. 3 is a perspective view showing a dispenser equipped with a head unit according to an embodiment of the present invention. Dispensing machines are used to coat specific substrates on a substrate. As shown in FIG. 3, the dispenser 10 includes a frame 11. The frame 11 placed on the bottom surface supports the weight of the dispenser 10 as a whole and provides stability to the dispenser 10. A table 12 on which the substrate is placed is placed on the frame 11. The table 12 is for supporting a substrate placed on one side of the frame S. The frame 11 supports the table 12. The table 12 is slidable in the Y direction via the Y-axis drive unit. The Y-beat drive unit can include a linear motor. A linear motor (LM) rail can be further mounted between the table 12 and the frame 11 to allow the table 12 to slide. The table 12 is slidable in the X direction via the X-axis drive unit and horizontally rotated in the 0 direction via the 0-axis drive unit. The table 12 can be fixed to the frame 11. The head supporting unit 13 is disposed on the table 12. The head supporting unit 13 extends above the table 12 in the X direction, and both ends thereof are supported by the frame 11. The head supporting unit 13 supported by the frame 11 is slidable in the Y-axis direction via the Y-axis driving device. Y-axis drive

4TOP-EN/06012TW : OP06H(8)49-TW can include linear motors. A linear motor 14 may be provided between the head unit 11 and may be provided between the head unit 13 and the frame to make the head support unit 13 slidable. The head end ^ single end is fixed to the linear guide 14 (moving in the x-axis direction) 2 :: unit 13 can slide along the linear guide ... or the evening head support early 13 can be provided for work a more efficient The head unit i(8) Μ =, the side unit (10) of the first embodiment of the present invention is used for coating a colloid on a substrate placed on the =12. The head unit supporting unit 13 supports two sheets: ' In this manner, the head unit 100 is slidable in the z-axis direction. The head single 1 可 can be slid in the χ direction via the X-axis drive unit. χAxis drive Early 疋 can include a linear motor. As shown in Fig. 3, the head unit 1 of the first embodiment of the present invention includes a head body 1 and a sensor block 160. The coating head 120 is mounted on the head body 110. The nozzle 121 and the connection/ejector 122 are mounted on the coating head 12A. The nozzle 121' is applied to the substrate S by a colloid. The syringe 122 includes a gel that is applied through the nozzle 121. The sensor 123 can be mounted on the coating head 120

4TOP-EN/06012TW : OP06H0049-TW 10 Measure the distance between the button and the nozzle 121. The coating head 120 can be difficult to ώ ^ ± a y, the m-axis driving element 13G moves up and down _ ° This way adjusts the nozzle 121 on the substrate S to drive the single phantom enamel coating head (10), but Bit ^ other side of the mouth. The up/down unit that is moved in the two-axis direction by the spindle motor 131 (for example, a rotary motor or a linear motor) is fastened to the head bracket 124 of the coating head 12G. Therefore, the Z-axis driving unit 13 〇 moves the coating head 12 in the two-axis direction. The coating head 120 can horizontally move the nozzle 121 in the Y-axis direction by the Y-axis driving unit 14 〇 moving in the γ-axis direction. Here, the Y-axis driving unit 140 can be mounted on one side of the z-axis driving unit 130. That is, the moving unit moved by the Y-axis driving unit 140 in the Y-axis direction is fixed to the Z-axis driving unit 130. Therefore, the coating master 2 is moved in the Y-axis direction together with the Z-axis driving unit 130. The gamma vehicle drive unit 140 can include a linear motor. The ZZ-axis motor drive unit 150 may be further mounted to the coating head 12'' to adjust the position of the nozzle 121 to a minute level. As described above, the Z-axis driving unit 130 moves the nozzle 121 up and down in the Z-axis direction by the Z-axis driving unit 130. The ZZ-axis driving unit 150 adjusts the position of the nozzle 121 by moving the nozzle 121 up and down in the Z-axis direction.

4TOP-EN/06012TW; OP06H0049-TW 1311929 The ascending/descending block 125 is mounted on the head bracket 124 to move the ascending/descending block 125 up and down. The nozzle 12, the injector 122, and the sensor 123 are mounted on the ascending/descending block 125. Therefore, the nozzle 121 can be moved up and down via the ZZ-axis driving device 150. The rising/falling area & single 兀 which can be moved up and down by the ZZ-axis driving unit 15A is fixed to the rising/falling block 125. Therefore, the nozzle ΐ2ι moves in the Z-axis direction. The zz (four) scale can contain a linear motor. (4) The thief block 16 〇 is installed in the head body. 16 〇 can be fixed to the head branch located at the lower part of the 2_ moving unit (10). 124 = , μ μ μ frame 124 must be installed on the z-axis drive list

The mouthpiece mode sensor block _ will not move down more than n mesh. Although the sensor 160 is mounted in the head body 110 in this manner, the diametric block 160 does not exceed the head body 110 in the X-axis direction. Ϊ元元100 can have a tighter structure. Further, when there are two or more head units on the head two 13, the phase = 2 = the distance between the heads and the head body can be greatly reduced. As shown in the figure and back and forth: the sensor block 160 includes a sensor 161 to display the drive unit 17 of the device 161. As shown in Fig. 9, the H is scanned in the direction of the rubber pattern ρ, X formed on the substrate. The sensor 161 transmits the scanned gel

4TOP-EN/06012TW ; OP06H0049-TW -12- ^ Data to the processing unit to calculate the scanned gel profile. The laser sensor can be included. Laser sensor, #. The lens that rotates back and forth within a predetermined angle of the point, and even the laser light. The laser sensor is positioned in this manner, and the laser beam is injected from the laser beam pattern p, thereby scanning the glue pattern to drive the unit 170 to make the sensor 16 horizontally and horizontally Rotate to the area of the cut in the X and γ directions. The state glue pattern driving unit 170 can rotate the sensor 161 back A at the pivot point. In most cases, the 'gel pattern' is squared on the substrate, as shown in Figure 9. Therefore, the sensor 161 rotates the axis of the rubber pattern and the gamma axis at 9^^. Therefore, the "measurement of the glue" can be measured in the X-axis direction and the x-axis direction. The drive unit 170 can rotate the sensor 161 back and forth between the position where the glue pattern can be scanned and the direction of the Y-axis. For example, the driving unit 170 can position the sensor 161 at a position as shown in FIG. 5, where the sensor 161 can scan the glue pattern in the X direction. The driving unit 170 can be rotated by the sensor 161. Sense of positioning at 9 degrees

4TOP-EN/06012TW : OP06H0049-TW 13 1311929 The detector 161 is in a position as shown in Fig. 7, where the sensor 161 can scan the glue pattern in the Y direction. That is, the drive unit 170 can rotate the sensor back and forth within a 90 degree angle of the pivot point. When the X axis and the Y axis are aligned with the X axis and the Y axis, respectively, the sensor 161 can scan the Y axis at an angle of 90 degrees to the X axis of the glue pattern, as shown in FIG. This design makes it possible to accurately measure the area of the cut surface of the glue pattern in the X-axis direction. Similarly, the sensor 161 can scan the X axis at a 90 degree angle to the Y axis of the glue pattern. This design accurately measures the area of the cut of the gel pattern in the y-axis direction. In this way, the single sensor 161 can accurately measure the area of the cut surface of the glue pattern located in the X-axis direction and the Y-axis direction. Therefore, it is possible to efficiently detect a defective gel pattern without requiring an additional sensor. The maximum angle at which the sensor rotates at a pivot point is not limited to 90 degrees. The driving unit 170 can rotate the sensor 171 around the pivot point at any angle to measure the slice area of the glue pattern in the X-axis direction and the Y-axis direction. As shown in FIGS. 5 to 8, the driving unit 170 may include a rotary actuator for transmitting the rotational power generated by the rotary actuator to the sensor 161 and a power transmission unit.

4TOP-EN/06012TW : OP06H0049-TW -14- 1311929 The rotary starter can include an air compressor starter 171. The air pressure starter 171 converts the air pressure energy into mechanical rotational energy for rotating an axis back and forth in a predetermined angle. The air compressor starter 171 has a compact structure = performing other actions. σ

The square shaft can be rotated clockwise or counterclockwise, and the drag 3 is stopped by the directional control valve using the air pressure starter 171. The pressure start state 171 has two tubes 1723 and a port for applying air. pressure. The rotary shaft can be rotated clockwise or counterclockwise, or the valve can be used to control the flow of the pressurized gas to stop the rotation.

When the sensor 161 has to be rotated within 90 degrees, the angle of rotation of the shaft in the air compressor starter can be limited to 90 degrees. The first-limit sense ^ is set at the first position where the rotary axis is stopped, and the second limit tester is set to rotate at the first position. The second position to stop. According to the signals provided by the first and second limit sensors, the directional control valve can limit the rotation range of the shaft to within 90 degrees. The shaft of the I starter 171 is mounted to the facing sensor 161. The shaft is mounted on the starter core 173, and the starter bracket 173 is fixed to the head bracket 124 located at the lower portion of the Ζ_moving unit 13G. The suspected starter is not limited to ^press start $(7). That is, any actuator that can be used for the rotation sensor 161 can be used.

4TOP-HN/060I2TW ; OP06H0049-TW -15- 1311929 The sensor bracket 181 is mounted on the motion transfer unit. The sensor bracket 181 is fixed to the upper portion of the sensor and is fixed to the shaft of the air compressor. The shaft of the air compressor is rotated so that the sensor bracket is also rotated. Therefore, the sensing write is also rotated. In the figure, the sensor 181 is structured to surround at least a portion of the sensor 161, but is not limited to this structure. Knife A invention can further mount a bearing 182 to the motion transfer unit for supporting the axle load when the shaft of the air compressor is rotated to rotate the sensor 161. The rotation limiting unit can be mounted to the driving unit 17A. From the outside of the air compressor 171, the rotation limiting unit limits the rotation of the sensor 161 within a 90 degree angle. This is to rotate accurately within a 9 degree angle. The rotation limiting unit may include a first stopper 191 mounted on the actuator bracket 173, and a second stopping device 192 and a third stopping device 193 mounted on the sensor 181. When the second sensor 161 is rotated back and forth from the position shown in FIG. 5 to the position shown in FIG. 7, the second stopping device 192 and the third stopping device 193 cooperate with the first stopping device 191 to prevent the sensor 161 from rotating. More than 90 degrees angle.

4TOP-EN/06012TW; OP06H0049-TW -16-1311929 The stop device 192 is configured in such a manner as to be in contact with the stop device 191 as shown in FIG. When the sensor 161 is rotated 90 degrees from the position shown in Fig. 5 to the position shown in Fig. 7, the stop means 193 is configured to be in contact with the stop means 191. This allows the sensor 161 to accurately rotate back and forth within a 9 degree angle. The drive unit 17A and the sensor 161 can be wrapped in a case for protection. Providing sufficient space in the housing 165 allows the sensor to rotate without a hitch. The housing 165 has an opening 165a in its lower portion through which the sensor component 1a of the sensor 161 is exposed to the outside. The shape of the opening 165a can be designed to correspond to the track of the sensor 161 rotating back and forth between Figs. 6-8. This allows the sensor component 161a to be exposed to the outside when the sensor 161 is rotated back and forth between the positions shown in Figures 6 and 8. The housing 165 can have an opening to the side through which the drive unit 170 and the sensor ι 61 can be conveniently accommodated. The housing is provided with a side opening such that the space in which the sensor 161 is mounted is a closed space 'where the sensor block 160 is attached to the head body 110. The housing 160 is not limited to this structure, but may include various structures. Fig. 10 and Fig. 11 are views showing the head unit of the second embodiment of the present invention. The same reference numbers are used in the drawings to indicate the same elements.

4TOP-HN/06012TW : QP06H0049-TW -17- 1311929 pieces. Referring to FIG. 10 and FIG. 11, the sensor block 260 of the second embodiment is different from the sensor block 16 of the first embodiment. In the second embodiment of the present invention, the sensor block 260 has a structure in which the sensor 261 corresponds to the pattern p formed on the substrate at a predetermined angle on the X-axis and the Y-axis. This allows the sensor 271 to measure the slice area of the glue pattern P in the X direction and the Y direction. As described in the first embodiment, the sensor 261 transmits the scanned pattern data to the processing unit to calculate the tangent region of the scanned gel pattern. The sensor 261 can include a laser sensor. The sensor block 160 includes a sensor support block 262 that causes the sensor 261 to have a θ❹ angle corresponding to the X axis. That is, the sensor support block 262 has an inclined surface 263 which is in contact with the sensor 26A having an angle of 对应 corresponding to X. The sensor block 262 is fixed to the head holder I24. Alternatively, the sensor block 262 head mount 124 is formed into a body. Therefore, the sensor 26l is skirted in such a manner as to have a predetermined angle corresponding to the X-axis and the γ-axis. The sensor support block 262 can be mounted under the cymbal drive unit 130. This prevents the sensor block from protruding the head body in the X-axis direction

4TOP-EN/06012TW ; OP06H0049-TW * 18- 1311929 110. Therefore, the head unit 200 can have a compact structure. Further, when two or more head units 200 are mounted on the head supporting unit 13, the distance between the head units 200 can be reduced. The sensor 261 has a predetermined angle corresponding to the X-axis and the Y-axis, and scans the X-axis and the Y-axis of the quadrilateral gel pattern. Therefore, only the single sensor 261 can be used to shape the energy side rubber in the X-axis and Y-axis directions. When the θ angle is too small or too large, the sensor 261 cannot measure the cut surface area of the glue pattern in the Y-axis direction. The sensor is preferably at a 45 degree angle, but is not limited to a 45 degree angle. When scanning by the sensor 261, the slice area of the glue pattern in the X-axis direction and the Υ-axis direction can be obtained by the following formula. [Formula] The section area in the X-axis direction = A〇 X cos (θ〇 - θι)

The area of the section in the direction of the x-axis is = Α〇χ sin (θ 〇 - D where the value measured by the susceptor 261 refers to the angle of the X-axis of the sensor, and the substrate S of the heart refers to The angle of the X-axis is as shown in Fig. 12. When the substrate S is placed on the table 12 at an angle to the X-axis, the above formula is used to calculate the direction in the X-axis and Υ

4TOP-EN/06012TW ; OP06H0049-TW -19 - 1311929 The area of the cut surface. When the substrate 8 is used as the stage 12, the degree of sensing ϋ and X is placed in the working degree ~ (the angle formed by the sensor and the X axis); the angle 3 is at an angle to the substrate by the angle) . a) minus the angle θ] (the sensor axis and the γ axis are formed in the direction of the cut surface. Therefore, it is not necessary to add extra == Ρ to effectively detect the defective rubber pattern. & w item single ΐ: The lower part of the shaft drive unit, when the unit is united, can be reduced by two solid heads: the master support unit has a distance between two or more "1" and two early turns. Note that the above embodiment is not intended to be a Instead, the attached request section should be used as a solicitation. Therefore, all changes and runs that fall within the request item should be followed by the patent specification. [Simplified illustration] The accompanying schema is used. Further explanation of the contents of the present specification, ^ m乍 is the basis of the ',' and the various embodiments of the present invention can be implemented in many different ways without departing from the spirit of the present invention or its important features, however What you need to know is that unless you limit

4 TOP-EN/06012TW; OP06H0049-TW -20- '1311929 The explanation explains the principles of the present invention together. FIG. 1 and FIG. 2 are schematic views showing a method for measuring a rubber pattern by a conventional sensor in a dispenser; FIG. 3 is a perspective view showing a dispensing machine of the first embodiment of the present invention; Figure 4 is a perspective view showing the head unit of Figure 3; Figure 5 is a perspective view of the sensing block of Figure 4, Figure 6 is a bottom view of Figure 5; Figure 7 is a perspective view showing the sensing of Figure 5. a block in which the sensor is rotated by 90 degrees; FIG. 8 is a bottom view of FIG. 7; FIG. 9 is a schematic diagram of assistance in explaining how the sensor of FIG. 5 scans the tangent region of the glue pattern, and FIG. 10 shows the present invention. 2 is a bottom view of the head unit, FIG. 11 is a bottom view of FIG. 10; FIG. 12 is a schematic diagram of assistance in explaining how the sensor having a 45 degree tilt angle of FIG. 10 scans the area of the glue pattern, and FIG. Schematic diagram to assist in explaining how the sensor of Figure 10 scans the area of the cut pattern when the substrate formed by the gel pattern is at a particular angle to the X-axis. [Main component symbol description]

4TOP-EN/06012TW : OP06H0049-TW -21 - 1311929

1 sensor 2 lens P glue pattern s substrate 10 dispenser 11 frame 12 table 13 support unit 14 linear motor 100 head unit 110 head body 120 coating head 121 nozzle 122 syringe 123 sensor 124 head bracket 125 rise / falling block 130 Z-axis driving unit 131 Z-axis motor 140 Y-axis driving unit 150 ZZ-axis driving unit 160 sensor block 161 sensor 161a sensor part

4TOP-EN/06012TW ; OP06H0049-TW -22 - .1311929 165 Housing 165a Opening 170 Drive unit 171 Drive unit 172a Vent tube 172b Vent tube 173 Starter bracket 182 Bearing 191 First stop device 192 Second stop device 193 Third Stop device 200 head unit 260 sensor block 261 sensor 262 sensor support block 263 inclined surface

4TOP-HN/06012TW : OP06H0049-TW -23 -

Claims (1)

Patent application scope: - the head unit is used in a dispenser, and the dispenser passes a nozzle of the head unit to apply a glue pattern when changing the relative position between the nozzle and a substrate. On the substrate, the head unit comprises: a head body supporting the nozzle; a sensor' measuring the gel pattern by scanning the gel pattern formed on the substrate in one direction All of the aoss-sectional area; and a driving unit, enabling the sensor to rotate horizontally back and forth corresponding to the head body to measure in the χ direction and the Y direction All of the area of the gel pattern formed on the substrate. The head unit of claim 1, wherein the drive unit activates the sensor to rotate back and forth at a pivotal point within a 90 degree angle. The head unit of claim 2, wherein the driving unit comprises a rotary actuator mounted on the head body, and a power-transferring unit, and the rotary actuator is transmitted The resulting rotational power is applied to the sensor. The head unit of claim 3, wherein the rotary actuator comprises 4TOP-EN/06012TW; OP06H0049-TW-24- an air compressor starter comprising an axis that rotates within a 90 degree angle range. The head unit of claim 4, wherein the drive unit further comprises a rotation limiting unit that only allows the sensor to rotate within a range of the 90 degree angle. The head unit of claim 1, wherein the head body comprises: a coating head on which the nozzle is disposed; and a Z-axis driving unit that moves up and down on the other side opposite to the nozzle mounting The coating head; wherein the sensor is mounted on a lower part of the Z-axis driving unit. The head unit according to claim 1, wherein the sensor comprises a laser sensor, and the laser light is continuously radiated through a lens, and the lens rotates back and forth in a direction at a predetermined angle of the defect to scan the glue. style. A head unit for use in a dispensing machine, wherein the dispenser passes a nozzle of the head unit to apply a glue pattern to the substrate when changing a position between the nozzle and a substrate. The head unit includes: a head body supporting the nozzle; and a sensor mounted on the head body to be specific to the X-axis and the Y-axis 4TOP-EN/06012TW; OP06H0049-TW -25 - 1311929 Within the angle, the gel pattern formed on the substrate is scanned, thereby measuring all surface areas of the gel pattern in the X-axis direction and the γ-axis direction, respectively. 9. The head unit of claim 8, wherein the sensor is mounted in a manner having a 45 degree inclination angle. 10. The head unit of claim 8, wherein the head unit comprises: a coating head on which the nozzle is mounted; and a Z-axis driving unit moving the coating head up and down to be mounted on the nozzle On the other side, the coating head is moved up and down; wherein the sensor is mounted on a lower portion of the Z-axis driving unit. 11. The head unit of claim 8, wherein the sensor comprises a laser sensor that continuously emits laser light through a lens, the lens rotating back and forth at a predetermined angle with the pivot point in a direction Scan the gel pattern. 4TOP-EN/06012TW : OP06H0049-TW -26 -