TW201120537A - Method for locating a position where a droplet of liquid crystal is judged not to have dropped and method for dropping a droplet of liquid crystal toward the position - Google Patents

Abstract

There is provided a method for dropping a droplet of liquid crystal toward a position where the droplet of liquid crystal is judged not to have dropped, the method including: a first step of sliding down a piston to drop droplets of liquid crystal on each of panel areas; and a second step of, (1) when one or more positions are judged not to have dropped, obtaining X and Y coordinates of each of the one or more positions, from a relationship between the number of applied pulses, an accumulated value of applied pulses, and X and Y coordinates of a given position on the panel area, using the number of and the accumulated value of pulses which had been applied to a motor until a piston was slid down to drop the droplet of liquid crystal toward the each of the positions, and then sliding down the piston to drop the droplet of liquid crystal toward the each of the positions, (2) when no position is judged not to have dropped, discontinuing to drop the droplet of liquid crystal on the panel areas. The present invention provides an advantage of automatically locating the position where the droplet of liquid crystal is judged not to have dropped from the nozzle, with great precision and accuracy.

Description

201120537 VI. Description of the Invention: TECHNICAL FIELD OF THE INVENTION The present invention relates to a liquid crystal coater. [Prior Art]

Liquid crystal is the intermediate phase between the crystalline solid and the isotropic liquid, and combines the crystal = structure.妓 Display it (LCD) utilizes liquid crystal = fluidity and crystal side _ isotropic. The LCD age is used in mobile phones, portable f-brains, desktop monitors, and LCD TVs. The liquid crystal display device is composed of a TFT array substrate and a color filter array substrate which are attached to each other by a glue (or a sealant) pattern, and the liquid crystal layer is sandwiched between the TFT array substrate and the color filter array substrate, Controlling the voltage applied to the liquid crystal layer of each pixel 'can allow a different amount of light to pass therethrough, thereby generating an image. A plurality of TFT arrays are formed on one substrate. A plurality of color filter arrays are formed on another substrate. A seal coater coats the glue to form a glue pattern on either of the two substrates. The glue pattern contains four straight glues with a corner angle of 9 degrees, each having the same length as the opposite. A liquid crystal (LC) coater coats the liquid crystal in a droplet form to a panel region defined by a substrate sizing pattern. The number of panel areas depends on the number of glue patterns formed on the substrate. The two substrates are combined into a mother substrate. At this time, the glue pattern serves as an adhesive to attach the two substrates to each other. Subsequent cutting of the mother substrate into discrete LCD panels 0 201120537 The liquid BB coater is equipped with a coating head unit coated with liquid crystal droplets. A coating head unit includes a support assembly, a cylinder assembly, and a sensor unit. The cylinder assembly is detachably attached to the support assembly. The bottle containing the liquid crystal is placed on the support component. The cylinder assembly contains a cylinder and a piston. The cylinder has a piston bore that opens into the middle in the longitudinal direction. The piston is inserted into the piston bore. As the piston slides up to a predetermined height in the cylinder, the suction space is created and becomes larger. As a result, a predetermined amount of liquid crystal is forced to flow from the bottle tank into the suction space. Each time the piston slides a predetermined distance in the piston hole, a drop of liquid crystal is dropped from the nozzle to the panel area. The sensor unit includes a transmitting portion and a receiving portion. The liquid crystal droplets pass between the emitter and the receiver before reaching the panel area. At this time, the sensor unit detects the passing liquid crystal droplets. The sensor unit transmits a detection signal to the control unit. The control unit recognizes that a drop of liquid crystal has dripped from the nozzle. The liquid crystal occupying the suction space has bubbles. In this case, when the piston slides down to a predetermined position, it is possible to discharge air bubbles from the nozzle instead of liquid crystal droplets. At this time, the sensor unit does not transmit the detection signal to the control unit. 201120537 When the detection signal is not received, the control unit generates a warning sound through the loudspeaker or displays a warning message on the monitor. In either case, the operator looks for a position on the panel area that is judged to be that the liquid crystal droplets have not dripped. When it is found that the liquid crystal droplets are not actually dripping, the operator inputs the X and Y coordinates of the position to the control unit. It is very difficult and time consuming for the operator to accurately find out where the actual drop of liquid crystal droplets is. Moreover, people like this are very inconvenient to read, and it is easy to find the wrong position. SUMMARY OF THE INVENTION The object of the present invention is to automatically find out the position where the liquid crystal drop is not dripped. ====_Drip_Not dripping

On the domain: and the second step 2) == = not dripping 'the number of pulses from the application, the applied pulse cumulative value' to use the motor to calculate the accumulated value of the crystal, to obtain the - or more Bit 1 each number of impulses and (2) When it is judged that there is no position where there is no dripping, the middle ':::: face:: IS] 201120537 domain. According to another aspect of the present invention, there is provided a method for finding a liquid crystal, the method comprising: a first step, a sliding piston dropping a dripping liquid Ba onto each panel area; and a second step, (丨) When more positions are judged not to drip, the relationship between the number of applied pulses, the applied pulse value, and the X and Y coordinates of the predetermined position on the panel area is utilized, and the motor is used until the piston T slides; Listen to the number of pulses in each position of the liquid crystal: and apply it to the motor until the piston slides down to drop the liquid crystal to the _ value, obtain the χ& γ coordinates of the one or more positions, and the position where there is no drips, Interrupt the dripping liquid crystal to the panel area. According to still another aspect of the present invention, there is provided a method for observing a position where a liquid crystal droplet does not drip, wherein the green color comprises: a second step of dropping the liquid crystal onto the panel area by the second piston; and a second Step, (when two or more positions are judged to be non-drip, the number of pulses from the system, the cumulative value of the applied 、, and the χ and γ coordinates between the predetermined positions on the panel area are applied to the motor until the piston Sliding down to drop the liquid crystal droplets to the pulse number and pulse accumulation value at each position, and obtain the X and coordinates of the one or more positions, then the piston slides down to drop the liquid crystal droplets to each position, and (7) when there is no dripping In the position, the liquid crystal droplets are dropped into the panel region. According to still another aspect of the present invention, there is provided a method for dropping a liquid crystal droplet into a position of a liquid crystal droplet, the method comprising: the first step: sliding the piston to drop Falling liquid L 丨 on each panel area; and in the third step, the field or less position is judged as not dripping, the number of pulses applied, the applied 201120537 pulse value, the top position of the m panel d domain, and the γ coordinate Between The relationship should be based on (4) the motor direct plug down to drop the number of pulses of the liquid crystal drop to each position, and the pulse value of the motor should be turned off until the piston slides down to drop the liquid crystal to each position, and the X and the position of the money are obtained. γ coordinates, iron, piston sliding (10) drop positions, from (7) when the touch is not in the position 'interrupted drop liquid crystal drops to the panel area. The foregoing and other objects of the present invention' features, viewpoints, and advantages are described and matched below. With the accompanying drawings, it will be more clearly understood. [Embodiment] Liquid crystal twinning _ Judgment Figure 1 is a perspective view of a liquid crystal coater implementing the method. Moving unit H, coating head unit selection box: drive = As shown in Fig. 1, the coater comprises a main frame 11, a member 14, a coating unit, and a coating head unit 1 which is provided on the main frame 11 at a position of a flat surface. Fly + mouth 13 guilty to move on the 丫 shaft dry mouth 3 can also be used to install the board on the platform. The way & is provided on the main frame 11. The mother base - drive unit 丨 4 lift unit] 4 1 connection main frame plus 13 on each side. Wood 1, while the other end is connected to coating" 2011205 37 The frame 15 / the first moving unit 14 moves the coating head unit support frame 15 on the γ axis side, and the fresh element 14 can be a miscellaneous motor. The coated fresh it support frame 15 straddles the platform 13. The first driving unit 16 One end is connected to the coating head unit baffle frame 15, and the other end is connected to the coating head unit 丨 (8). The second driving unit 】 6 moves the coating head unit in the X-axis direction. The second driving unit 16 can be a linear motor. Figure 2 is a perspective circle of the coating head unit of Figure 1.

As shown in FIG. 2, the coating head unit 1A includes a branch assembly ιι, a linear, a moving grass 120, a rotary driving unit 13A, a cylinder assembly 14A, a liquid crystal storage unit 150, and a lashing single 60 And the sensor unit 17〇. Support 3 2 includes a first member U, a second member 112, a third member 113, and a housing 114. Second, the moving unit 16 is connected to the back of the first member (1). The member U is called the first housing 114 and is provided on the upper side of the third member 113. The piston 142 is reciprocated in the Z-axis direction. The wire 12G includes a motor 121, a ball screw 122, and connectors 123 and 2 124. The motor 121 is provided on the front side of the first member (1). Ma read Zhu Han = 2 Γ Another cow 123 is connected to one end of the ball screw 122. ^ The other end of the bead screw H22 is rotatably coupled to the second member u 9 201120537 When the pulse is rotated, the motor 121 rotates the ball screw 22 22 clockwise or counterclockwise to move the ball screw 122 up/down. The rotary drive unit 130 rotates the piston 142 about the Z axis. The rotary drive unit 130 includes a base member 131, a motor 132, a cylinder 133, a first rotating shaft 134, a coupling member 137', and a second rotating shaft 135. The base member 131 is movably provided to the casing 114. The moving member 124 is coupled to the back side of the base member Hi. A motor 132 and a cylinder 133 are provided on the front side of the base member 131. The shaft of the cylinder 133 is coupled to one end of the first rotating shaft 134 by a coupling member 137. The second shaft 丨 35 has perforations along its length. One end of the first rotating shaft 134 passes through the hole of the second rotating shaft 135 and is then detachably attached to the piston 142. The cylinder 133 pulls the first rotating shaft 134 and connects the piston 142 to the second rotating shaft 135. The motor 132 rotates the second rotating shaft 135. In the case where the piston 142 is coupled to the second rotating shaft 135, the second rotating shaft 135 is rotated by the motor 132 to rotate the piston 142 about the z-axis. The cylinder assembly 140 discharges the liquid crystal through the nozzle 162. The cylinder assembly 14A includes a cylinder 141 and a piston 142. The cylinder assembly 14 is detachably attached to the bottom side of the third member 113. One end of the first rod (not shown) and the second rod U3B are fixedly coupled to the bottom side of the third member 113. The first rod has a thread on the surface. The second rod 113B has a thread on the surface. The first nut (not shown) locks to the first lever and the second nut 113D locks to the second lever U3B. The cylinder 114 has a first groove (not shown) on the back side and a second groove (not shown) and a second rod 113B longitudinally inserted into the first groove (not shown) and the second groove 14IB, respectively. . Thereafter, the 'first nut (not shown) and the second nut n3D are respectively locked to the first rod (not shown) and the second rod 13B' to connect the cylinder assembly just to the bottom side of the three members 113. 201120537 Fig. 3 is a longitudinal perspective view of the cylindrical member in which the piston groove faces the inflow hole in the first embodiment in which the dropping liquid crystal is dropped to a position where the liquid crystal droplet is not dropped. Figure 4 is a longitudinal cross-sectional view of the cylindrical assembly of the piston groove of Figure 2 facing the outflow opening in the method of the first embodiment. The dotted arrows indicate the direction in which the liquid crystal flows. The solid arrows indicate the direction in which the piston slides up and down and rotates. As shown in Figs. 3 and 4, the cylinder Hi has a piston hole 141E passing through the center in the longitudinal direction. The cylinder 141 has an inflow hole 14ic and an outflow hole 141D which are urged to penetrate the cylindrical wall in the radial direction. The inflow hole 141C and the outflow hole 141D are opposed to each other. The inflow hole 141C and the outflow hole 141D are connected to the piston hole 141E. The piston 142 is inserted into the piston hole 141E. The piston 142 has a longitudinal groove 142A on the surface. The length of the recess 142A is from one end of the piston 142 to somewhere between the ends of the piston 142. When the groove 142A faces the inflow hole 141C, the piston hole 141E is connected to the inflow hole 141C, and at this time, the piston hole 141E is not connected to the outflow hole 141D. Conversely, when the groove 142A faces the outflow hole 141D, the piston hole 141E is connected to the outflow hole 141D'. At this time, the piston hole 141E is not connected to the inflow hole 141C. The liquid crystal storage unit 150 includes a bottle holder 151, a bottle can 152, and a first tube 153. A can holder 151 is provided on the housing 114. The bottle holder 151 supports the bottle 152. The bottle can 152 contains liquid crystal. The bottle can 152 is connected to the inflow hole 141C by the first tube 153. The nozzle unit 160 includes a nozzle branch seat 61, a nozzle 162, and a 201120537 second tube 163 喷嘴 nozzle support seat 161 provided to the housing 114. The nozzle support 161 supports the nozzle 162. The nozzle bore 62 is connected to the outflow hole 141D by the second tube 163. FIG. 5 is a schematic view of the sensor unit and the nozzle shown in FIG. 2. FIG. The broken line indicates that the light beam travels from the transmitting portion to the receiving portion. The sensor unit 170 includes a sensor support 171 and a sensor 172. The sensor support base 171 includes a first sensor support base 171A and a second sensor support base 171B. The sensor 172 includes a transmitting portion 172A and a receiving portion Π2Β. The transmitting portion 172A is provided on the first sensor supporting base i71A, and is connected

The receiving portion 172B is provided on the second sensor support 171B. The transmitting unit 172A and the receiving unit 172B are in line of sight with respect to each other. When the liquid hopper is discharged through the nozzle ι62, the emitting portion 172A emits a light beam to the receiving portion 172b. When the liquid crystal droplet dropped from the nozzle 162 passes between the transmitting portion 172A and the receiving portion 172B, it collides with the light beam. As a result, the receiving unit 172B receives a small amount of light from the transmitting portion 172B when there is no object in the beam path. When the receiving portion receives less light, the sensing 丨 72 transmits a fine weave in the form of a voltage to the control unit (not shown). Upon receipt of the detection signal, the control unit (not shown) recognizes that a drop of liquid crystal has dripped from the nozzle 162. The present invention is directed to a method of dropping liquid crystal droplets into a liquid of 201120537 according to the first embodiment of the present invention. In the method of dropping the liquid crystal droplets to the determined position in the first embodiment, 'the method of finding the position where the liquid crystal droplet is judged to be non-dropped, the first embodiment of the method. Therefore, for the sake of brevity and consistency, the first embodiment in which the liquid crystal droplets are not dripped is not separately stated. The blade power, 6 is a flow chart showing the first embodiment of the method of dropping the liquid crystal according to the present invention to a position judged to be a drop of the liquid droplet. As shown in FIG. 6, it is difficult for the liquid crystal to drip until it is judged that the liquid crystal droplet has not dripped. In the method, the method includes the first step su, and the sliding piston 142 drops the dripping liquid 33 to each panel region, and In the second step, (1) when the two positions are judged not to drip, the application from the pulse number, the applied: the cumulative value, and the gamma coordinate between the predetermined positions on the panel are applied to the motor 121 until the piston 142 slides down. Dropping the number of pulses and pulse accumulating values of the liquid crystal drop to each position, and obtaining or more setting the respective X and γ coordinates, the New Piston 142 slides down and drops the liquid crystal to each position to = (2) when there is no dripping When the price is checked, the area of the panel is shown in the first step s. Dropping into the panel area bit Fig. 7 is a schematic view of the path followed by the coating head unit of Fig. 1 from the falling liquid crystal. For example, Figure 7t defines a panel area on the mother substrate. 13 201120537 Two or more panel areas u can be defined on the mother substrate Μ. It is assumed that there are four positions on the panel area U defined by the glue pattern formed on the mother substrate, namely Ρ, Ρ3, and Ρ4. There can be 3 or fewer locations, or 5 or more locations. It is assumed that 1 mg of liquid crystal is dropped to the respective positions of P1, ρ2, ρ3, and ρ4 as shown in FIG. The piston 142 is slid a predetermined distance, and 4 mg of liquid crystal is caused to flow from the can 152 into the suction space S. Thereafter, the piston 142 slides down by a predetermined distance of 1/4 and drops 1 mg of liquid crystal from the nozzle 162 to the respective positions of pi, p2, p3, and p4. The motor 132 rotates the piston 142 counterclockwise about the Z axis such that the groove 142A faces the inflow hole 141C. The motor 121 slides the piston 142 from the bottom of the cylinder 141 to the Z0 point along the Z axis. It is assumed that the pulse value applied to the motor 121 for this action is -4000 (negative four thousand). The liquid crystal passes through the first tube 153 and the inflow hole 141C, and flows into the suction space S from the bottle can 152. The suction space s is equally divided into 4 small spaces. These small spaces have the same height. That is, the height between Z0 and Z1, Z1 and Z2, Z2 and Z3, and Z3 and Z4 are the same. As shown in Fig. 4, the motor 132 rotates the piston 142 clockwise around the Z axis, so that the groove 142A faces the outflow hole 141D. The coating head unit 100 is moved and positioned above the position P1. Motor 121 causes piston 142 to slide from point Z0 to point Z1. The pulse value applied to the motor 121 for this 14 201120537 action is 1000 (-thousands). Lmg liquid crystal droplets pass through the outflow hole

The 141D and the second tube 163 are dropped from the nozzle 162 to the position pi. The number of pulses applied to the motor 121 is 1 (one). The sensor 172 detects that the liquid crystal drop sensor 172 dropped from the nozzle 162 transmits a detection signal in the form of a voltage (24 V) to a control unit (not shown). A control unit (not shown) recognizes that a drop of liquid crystal has been dropped from the nozzle 162. The coating head unit 100 is moved and positioned above the position P2. Motor 121 causes piston 142 to slide from point Z1 to point Z2. The pulse value applied to the motor 121 for this action is 1000 (-thousands). The pulse cumulative value applied to the motor 121 is 2000 (2000 = 1000 + 1000). The lmg liquid crystal droplets drip from the nozzle 162 to the position P2 through the outflow hole hid and the second tube 163. The number of pulses applied to the motor 121 is 2 (two). The sensor 172 detects liquid crystal droplets dripping from the nozzle 162. The sensor 172 transmits a detection signal in the form of a voltage (24V) to a control unit (not shown). The control unit (not shown) recognizes that two drops of liquid crystal have been dropped from the nozzle 162. The coating head unit 100' is moved and positioned above the position P3. Motor 121 causes piston 142 to slide from point Z2 to point Z3. The pulse value applied to the motor 丨 21 for this action is 1000 (-thousands). The pulse cumulative value applied to the motor 121 is 300 〇 (3 〇〇〇 = i 〇〇〇 + i 〇〇〇 + i 〇〇〇). At this time, since there is a bubble in the pomelo suction space § occupied by the liquid crystal, bubbles are discharged from the nozzle 162 of the jet 201120537 instead of the liquid crystal droplets. Therefore, the liquid crystal droplet does not drip from the nozzle 162 to the position p3 through the outflow hole 141D and the second tube 163. The number of pulses applied to the motor 121 is 3 (three ^. When the sensor m does not measure the liquid crystal droplets dripping from the nozzle (6). The sensor 172 does not transmit a voltage (surgical) form of the detection signal to the control The unit (not shown). The control unit 7〇 (not shown) still considers a total of two drops of liquid crystal dripping from the nozzle (6). The coating head unit 100 is moved and positioned above the position P4. The motor 121 causes the piston 142 to slide from the Z3 point. Go to point Z4. The pulse value applied to the motor 121 for this action is 1 〇〇〇 (one thousand). The pulse cumulative value applied to the motor 121 is 4 〇〇〇 (4000 = 1 〇〇〇 + i 〇〇〇 + 1qqq+1q〇q^ 〇+ The liquid crystal droplets drip from the nozzle 162 to the position P4 through the outflow hole 141D and the second tube 163. The number of pulses applied to the motor 121 is 4 (four). The sensor 172 detects the slave nozzle 162 drops of liquid crystal droplets. The sensor 172 transmits a detection signal in the form of a voltage (24V) to a control unit (not shown). The control unit (not shown) recognizes that a total of three drops of liquid crystal have been dropped from the nozzle 162. The second step S12 is described. The control unit (not shown) determines that the liquid crystal droplet has not dropped to the position p3 because 201120537 = when f is not sensed The detector 172 receives the detection signal. Therefore, the control unit = the drop liquid crystal drops to the position Ρ 3. The control unit utilizes the applied pulse number, the pulse cumulative value for f, and the X and the Υ seat of the predetermined position on the panel area. The X and γ coordinates of the position P3 are calculated. Fig. 8 is a two bar graph of the method t of the first embodiment, the upper bar graph 2 pulse number and the pulse cumulative value, and the lower bar graph shows the pulse number and the sense of pull As shown in FIG. 8, when the control unit (not shown) does not receive the signal from the sensor 172, the pulse number and the pulse cumulative value are respectively 3 (three) and FIG. 9 is the method towel of the first embodiment, indicating that (4) A lookup table of the number of pulses, the applied pulse cumulative value, and the relationship between the 乂 and γ coordinates of the predetermined position on the panel area. As shown in Fig. 9, when the pulse number and the pulse cumulative value are 3 (three) and 3000, respectively. (three thousand) when the position P3 and the γ coordinate are (2〇2〇). The relationship between the pulse number, the pulse accumulation value, and the predetermined position on the panel area is input to the control before the coating operation is started. Unit (not shown). The coating head unit 1 drops the liquid crystal droplets to P3 is shown. As shown in Fig. 3, the 'motor' 32 rotates the piston 142 counterclockwise around the Z axis, so that the groove 142A faces the inflow hole MIC. The motor 21 slides the piston 142 to the Z3 point from the bottom of the cylinder 141 along the z axis. It is assumed that the pulse value of this operation is applied to the motor pi 201120537. The pulse value is -1000 (negative one thousand). The liquid crystal passes through the first tube 153 and the inflow hole 14IC, and flows from the bottle can 152 into the suction space S. As shown in Fig. 4, the motor The piston 142 is rotated clockwise about the Z axis so that the groove 142A faces the outflow hole 141D. The coating head unit 1 is moved and positioned above the position p3. Motor 121 causes piston 142 to slide from point Z3 to point Z4. Applied to the motor 121 for this action, the impulse value is 1_b). The lmg liquid crystal droplets drip from the nozzle 162 to the position p3 through the outflow hole MiD and the second tube 163. When it is judged that 1 mg of the liquid crystal droplets have not dripped to the respective positions of ρι, p2, and p4, the χ and Υ coordinates of the respective positions of pi, p2, and p4 can be obtained in the same manner as the position P3. Thereafter, in the same manner as in the position ρ3, liquid crystals are dropped to the respective positions of PI, P2, and P4. The field control unit judges that when the liquid crystal droplets are dropped from the nozzle to the positions of P, P3, and P4, the liquid crystal coating machine drops the liquid crystal droplets onto the panel region defined on the mother substrate. A method of dropping liquid crystal droplets to a position judged to be a liquid crystal droplet not dripping according to the second embodiment of the present invention will now be described. In the second embodiment, the liquid crystal is dropped to a position where it is determined that the liquid crystal droplet has not dripped.

LSI 18 201120537 The method of the method of determining the position of the liquid crystal droplet in the second embodiment of the method is to determine the position of the liquid crystal drop, and the position of the liquid crystal drop is not separately described. A second embodiment of the method. Dropping (4) Dropping the liquid crystal drop to the flow chart of the second embodiment of the method of determining the liquid crystal drop. As in the case of 1 10^ - the first drop of liquid crystal _ touch is the position where the liquid crystal drop does not drip

In the method, the method includes the first step S21, the sliding of the second-seven φ ί crystal droplets to each panel area, and the second step S22, (1) the field, the eve position is judged as not dripping, the number of pulses applied from the application, the application The value of the rush, and the relationship between the 位置 chain and the predetermined position on the panel area 'utilize the motor until the piston slides down to close the number of pulses of the liquid crystal drop to each position, and should (4) motor fine piston τ slip (10) crystal Drop the pulse value at each position to obtain the X and Υ coordinates of one or more positions, then the piston slides down to drop the liquid crystal to each position' and (2) when it is judged that there is no drop, the liquid crystal is interrupted. Drop into the panel area. It is assumed that 1 mg of liquid crystal is dropped to the respective positions of PI, Ρ2, Ρ3, and Ρ4, as shown in FIG. The piston 142 is first slid a predetermined distance, and the img liquid crystal is caused to flow from the bottle can 152 into the suction space S. Thereafter, the piston 142 slides down a predetermined distance, and lmg of liquid crystal drops from the nozzle 162 to the position. The piston repeatedly slides up/down to drop lmg of liquid crystal to the remaining positions P2, P3, and P4. For this reason, in the method of the second embodiment, it is necessary to individually apply to the motor each time to cause the piston to slide down and drop the pulse value of the liquid crystal droplet instead of the pulse accumulation value. t Μ 19 201120537 The first step S21 will now be described. Figure 11 is a longitudinal cross-sectional view showing the cylindrical member of the piston recess shown in Figure 2 facing the inflow hole in the method of the second embodiment. Figure 12 is a longitudinal cross-sectional view of the cylindrical assembly of the piston groove shown in Figure 2 facing the outflow opening in the method of the second embodiment. The dotted arrows indicate the direction in which the liquid crystal flows. The solid arrows indicate the direction in which the piston slides and slides up/down. As shown in Fig. 11, the motor 132 rotates the piston 142 counterclockwise about the Z axis so that the groove 142A faces the inflow hole 141C. The motor 121 slides the piston 142 up to the Z0 point from the bottom of the cylinder 141 along the Z axis. It is assumed that the pulse value applied to the motor 121 for this action is -1000 (negative one thousand). The liquid crystal passes through the first tube 153 and the inflow hole 141C, and flows into the suction space S from the bottle can 152. φ As shown in Fig. 12, the motor 132 rotates the piston 142' clockwise around the Z axis so that the groove 142A faces the outflow hole 141D. The coating head unit 100 is moved and positioned above the position P1. Motor 121 causes piston 142 to slide from point Z0 to point Z1. The pulse value applied to the motor 121 for this operation is 1 〇〇〇 (- 千 碌 l mg liquid crystal droplets are transmitted through the outflow hole 141D and the first tube 163 is dropped from the nozzle 162 to the position pi. The number of pulses applied to the motor 121 is 1 ( 1) 20 201120537 Sensor 172 gamma, j drops the liquid crystal droplets from the nozzle 162. The sensor 172 transmits a detection signal in the form of a tear (tear) to the control unit (not shown). The voltage is called "sensing value" The control unit (not shown) recognizes that a drop of liquid crystal has been dropped from the nozzle. A moving coating head unit 100 is positioned above position p2. As shown in Figure n, motor 132 rotates piston 142 counterclockwise about the Z axis. The groove 142A faces the inflow hole 141C. The motor (2) slides the piston 142 up to the bottom of the _141 from the bottom of the Z axis to the |] Z0· point. The pulse value applied to the motor 121 for this action is 1000 (negative-thousand). The suction space s flows from the bottle can 152 through the first tube 153 and the inflow hole (4) C. As shown in Fig. 12, the motor 132 rotates the piston 142 clockwise around the z-axis, so that the groove 142A faces the outflow hole i41D. The piston 142 is caused to slide from the Z0 point to the Z1 point. The pulse value applied to the horse f 121 for this action is applied. 1〇〇〇(一千).—The liquid crystal droplets are dropped from the nozzle 162 to the position p2 through the outflow hole 141D and the second tube 163. The pulse number of the 121 is 2 (2). The sensor 172 detects The droplets are dropped from the nozzle 162. The sensor 172 transmits a detection signal in the form of a voltage (24V) to the control unit (not shown) (the control unit (not shown) recognizes that a total of two drops of liquid crystal have been dropped from the nozzle 162. The coating head unit 100 is moved and positioned above the position p3. As shown in Fig. π, the motor 132 rotates the piston 丨 42 ' counterclockwise about the Ζ axis to make the groove ι 42α face the inflow hole 141 C. The motor i2 l is rounded along the ζ axis (4) The bottom slides up 201120537 to move the piston 142 to the Z0 point. The pulse value applied to the motor 〖21 for this action is · 1 〇〇〇 (negative one thousand) ° lmg liquid crystal passes through the first tube 153 and the inflow hole 141C, from the bottle 152 flows into the suction space s. As shown in Fig. 12, the motor 132 rotates the piston 142 clockwise about the z-axis, so that the groove 142A faces the outflow hole 141D. The motor 121 causes the piston 142 to slide from the z〇 point to the Z1 point. The pulse value to the motor 121 for this action is 1 〇〇〇 (one thousand). The number of pulses applied to the motor 3 (3) At this time, since there is a bubble in the suction space s occupied by the liquid crystal, bubbles are discharged from the nozzle 162 instead of the liquid crystal droplets. Therefore, 1 mg of the liquid crystal droplet does not pass through the outflow hole 141D and the second tube 163 from the nozzle. 162 is dropped to the position P3. The number of pulses applied to the motor 121 is 3 (three). The sensor 172 does not detect liquid crystal droplets dripping from the nozzle 162. The sensor 172 does not transmit a detection signal in the form of a voltage (24V) to the control unit (not shown). The control unit (not shown) still considers a total of two drops of liquid crystal dripping from the nozzle 162. The coating head unit 1 〇〇 ' is moved and positioned above the position P4. As shown in Fig. θ, the motor 132 rotates the piston 142 counterclockwise about the yoke axis so that the groove 142 面对 faces the inflow hole 141C. The motor 121 slides the piston 142 upward from the bottom of the cylinder 141 to the Ζ0 point along the 2-axis. The pulse value applied to the motor 121 for this operation is 〇〇〇 (negative one thousand) °1 mg of liquid crystal permeates through the first tube 153 and the inflow hole MIC, and flows into the suction space S from the bottle can 152. As shown in Fig. 2, the motor 132 rotates the piston 142' clockwise around the Z and the groove 142A faces the outflow hole 141D. 22 201120537 The motor 121 causes the piston 142 to slide from the Z0 point to the Z1 point. The pulse value applied to the motor 121 for this action is ι000 (-thousands). The number of pulses applied to the motor ΐ2ι is 4 (four).

The Img liquid crystal droplets are dripped from the nozzle 162 to the position P4 through the outflow hole 141D and the second tube 163. The sensor 172 detects liquid crystal droplets dripping from the nozzle 162. The sensor 172 transmits a detection signal in the form of a voltage (24V) to the control unit (not shown). A control unit (not shown) considers that a total of three drops of liquid crystal have been dropped from the nozzle 162. The second step S22 will now be described. The control unit (not shown) judges that the liquid crystal droplet has not dropped to the position p3 because the detection signal is not received from the sensor 丨72 at f. Therefore, the control unit ^ determines to drop the liquid crystal droplets to the position P3. The control unit calculates the X and γ coordinates of position Ρ3 using the applied pulse number, the applied pulse value, and the relationship between the χ and γ coordinates of the predetermined position on the panel area. Figure 13 is a two bar graph in the method of the second embodiment, the upper bar graph shows the thief and the pulse test' and the following button shows the number and sense as shown in Figure 13, when the control unit (not Display) When the detection signal is not received from the sensor, the number of pulses and the pulse value are 3 (three) and 1 〇〇〇 (one thousand, respectively. Figure 14 shows the applied pulse in the method of the second embodiment. Number, application [Si 23 201120537 pulse value, and the relationship between the x and γ coordinates of the predetermined position on the panel area. As shown in Figure 14, when the number of pulses and the cumulative value of the pulse are 3 (three) and 1000, respectively (-thousands), the X and Υ coordinates of position Ρ3 are (20, 20). The relationship between the number of pulses, the pulse value, and the predetermined position on the panel area is input to the control unit before the coating operation is started (not The coating head unit 1 drops the liquid crystal drop to the position Ρ 3. • As shown in Fig. 11, the motor 132 rotates the piston 142 counterclockwise around the Ζ axis, so that the groove 142 Α faces the inflow hole H1C. The yoke slides the piston 142 upward from the bottom of the cylinder ζ〇1 to the ζ〇 point. It is assumed that the motor 121 is applied to perform this action. The punching value is 1 〇〇〇 (negative one thousand). The liquid crystal flows into the suction space s from the bottle can 152 through the first tube 153 and the inflow hole 141C'. As shown in Fig. 12, the motor 132 rotates the piston clockwise around the x-axis. 142, = the groove 142A faces the outflow hole 141D. The coating head unit 100 is moved, and φ 疋 is located above the position P3. The motor 121 causes the piston 142 to slide from the Z0 point to the Z1 point. The pulse applied to the motor 121 is performed. The value is ι_(one thousand). The 1 mg liquid droplet drops from the mouth 162 to the position P3 through the outflow hole 141d and the second tube 163. When it is judged that 1 mg of the liquid crystal droplet does not drip to pi, p2, and p4 In the position, the X and Y coordinates of each position of P1, P2, and p4 can be obtained in the same manner as the position P3. Thereafter, the lmg liquid crystal can be dropped to the positions of pi, P2, and P4 in the same manner as the position P3. 24 201120537 When the control unit judges to drop 1mg of liquid crystal droplets from the nozzle to ρι ρ2 ρ3 Kit"/;!, the liquid crystal coating breaks the droplets on the substrate. The advantage provided by the present invention is that it is highly accurate and accurate. The liquid crystal droplet is judged to be a position where it does not drip from the nozzle. Although the present invention can be many shapes The implementation is not to be taken from the spirit and it should be understood that the above embodiments are not limited to any of the details described above, but should be construed in the context of the spirit and scope of the patent scope. Therefore, all changes and omissions that fall within the scope of such a boundary or spirit are defined in the scope of the patent application. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in the claims BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a liquid crystal coater in which a method of finding a position at which liquid crystal droplets are judged to be not dripped according to the present invention is implemented; FIG. 2 is a side view of the coating head unit shown in FIG. FIG. 3 is a longitudinal perspective view of the cylindrical group 201120537 of the piston groove facing the inflow hole in the first embodiment of the method of dropping the liquid crystal drop to the position where the liquid crystal droplet is not dripped; Figure 4 is a longitudinal sectional view of the cylindrical assembly of the piston recessed hole shown in Figure 2 in the method of the first embodiment; Figure 5 is a schematic view of the sensor unit and the nozzle of Figure 2; Figure 6 is a schematic view showing the drop liquid crystal drop A flow chart of a first embodiment of a method for determining a position at which a liquid crystal droplet does not drip; FIG. 7 is a schematic view showing a path followed by a coating head unit of FIG. 1 from a nozzle dropping a liquid crystal drop to a panel region;

- Figure 8 is two bar graphs in the method of the first embodiment, the upper bar graph shows the number of pulses and the pulse cumulative value ' and the number of the following ugly pulses and the sensed value; Figure 9 is the first - In the embodiment method, a lookup table indicating the pulse cumulative value of the applied pulse number and the relationship between the χ and γ of the predetermined position on the panel area; FIG. 10 is a position indicating that the liquid crystal droplet has not dripped according to the present invention. FIG. 11 is a longitudinal cross-sectional view of the cylindrical assembly of the piston groove shown in FIG. 2 facing the inflow hole in the method of the second embodiment; FIG. 12 is a second embodiment method 2 is a longitudinal cross-sectional view of the cylindrical assembly of the piston groove facing the outflow hole; FIG. 13 is a diagram showing the number of pulses and the pulse value of the two bar graphs in the second embodiment of the method of the second embodiment. The lower_bar graph shows the number of pulses and the sensed value; and FIG. 14 shows the relationship between the applied pulse number, the applied pulse value, the shape of the surface of the money surface (4) χ and the γ coordinate in the method of the second embodiment. Lookup table. S S1 26

201120537 [Description of main component symbols] 11 13 14 15 16 100 110 111 112 113 113b 113d 114 120 121 122 123 124 130 131 132 133 134 135 137 140 Main frame platform First drive unit Coating head unit Support frame Second drive unit Coat head unit support assembly first structure second member third member second rod second nut housing linear drive unit motor ball screw engage member moving member rotational drive single base member motor cylinder first turn second shaft handle Cylinder assembly

L SI 27 201120537

141 141b 141c 141d 141e 142 142a 150 151 152 153 160 161 162 163 170 171 171a 171b 172 172a 172b MS u PI ' P2 ' P3 ' P4 cylinder second groove inflow hole outflow hole piston hole piston groove liquid crystal storage early element Bottle support holder bottle first tube nozzle unit nozzle support seat nozzle second tube sensor unit sensor support seat first sensor branch base second sensor support sensor transmitter receiving portion mother substrate Suction space panel area location

Claims (1)

201120537 VII. Patent application scope: A method for judging that there is no dripping and miscellaneous, the method includes: upper; and 7th 'sliding-piston-dropping the liquid to drip the liquid crystal to the shore area of each panel area' (1) when - or When the button is not touched, it will be from the =: should be seated ^ f cake attack 'Gu application to - motor until a live accumulation of the number of impulses ^ = no drop location == & and Yf mark, And (2) when judging n the drop of liquid crystal drops to the panel area. 2. A method in which a droplet is judged to be a position where there is no dripping, the method includes · on; and the step is stepped down - the piston is in the panel area, the h_ value is lost, and a predetermined hatred is placed on the panel area. n fines should be turned off; the number of pulses at each position, and the application of more than 3: f each X and Y coordinates, and (2) when it is judged that there is no position to interrupt the drop of liquid crystal drops to the panel area. 3· - A method of dropping liquid crystal _ touches the position where the liquid crystal droplet does not drip, the method includes: the square; and the first step, sliding - the piston drops the liquid crystal to the panel area 29 I 201120537 application pulse Number, application, Erda, 2', slid down from the plug to drop the liquid crystal: use - coffee value, obtain the number of pulses of the - or more positions, and the pulse is accumulated to slide down the liquid crystal plug, interrupted The secret liquid drops into the panel area ^). Field _ there is no unfalling bit 4. A method of langlang light ^ not dripping position, the side; and the first step 'sliding - the piston to drop the crystal _ the application of the pulse zone : The relationship between the falling time '«, X and Υ coordinates, the use of 2 drops of liquid crystal _ the number of the pulse of the position, and the application to the plug to correct the liquid crystal _ each recorded ship value ^ more position Each X and Υ, then the lower phase of the wire is dropped = 曰 = to each of the positions, and (2) when _ there is no drop ^ liquid crystal drip panel area I 30