KR20030077848A - Inspection Apparatus for LCD Glass - Google Patents

Abstract

PURPOSE: An LCD glass testing device is provided to realize the precise and accurate testing by spraying vapor to the surface of an LCD glass, and conveniently and precisely control an LCD glass moving unit, thereby improving the testing efficiency. CONSTITUTION: An LCD glass testing device includes a testing table(10), a vapor spraying unit(100), a cooling unit(200), a tilting unit(300), a turn unit(400), first and second base plates(500,600), and a lower base(700). The testing table is provided with a plurality of guide pins(11) at the upper outer periphery for guiding LCD glasses, a plurality of support pins(12) supporting bottom surfaces of the LCD glasses, a plurality of adsorbing elements(13) for vacuum adsorption of the LCD glasses, and handles(14) for position control of the testing table. The vapor spraying unit sprays fine vapor to the surfaces of the LCD glasses in advance to test the glasses, for clearly exposing the defects of the glasses. The cooling unit sprays cooling air to the glasses before spraying the vapor for promoting the attachment of the vapor to the glasses. The testing table is mounted on the top of the tilting unit and inclined by the tilting unit. The tilting unit is stacked on the turn unit, which has a rotation shaft(401) connected to a lower part of the tilting unit for rotating the tilting unit. The first and second base plates move rectinearly in X-axis and Y-axis directions respectively. The turn unit is stacked on the first base plate and the first base plate is slidably stacked on the second base plate. The second base plate is slidably mounted on the lower base.

Description

LCD Glass Inspector {Inspection Apparatus for LCD Glass}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an LCD glass inspection apparatus which visually inspects stains, scratches, liquid crystal injection states, etc. of a liquid crystal display (LCD) under certain lighting, and is particularly accurate by spraying fine vapor on the surface of an LCD glass. LCD glass that improves the inspection efficiency by allowing the inspector to have a sense of unity with the inspection device by allowing the user to adjust the LCD glass moving mechanism conveniently, smoothly and finely in various ways. It relates to an inspection apparatus.

Visual inspection of LCD glass is an inspection method that the inspector visually confirms when it is difficult to use automated measuring equipment or when manufacturing the measuring equipment is difficult to manufacture precisely and accurately. For example, staining, scratches, liquid crystal injection state, etc. on the surface of the LCD glass can be said to be the most accurate method of directly inspecting the inspector.

In the past, the visual inspection of the LCD glass has been performed by the inspector holding the LCD glass by hand and illuminating it in the light. However, as the LCD glass is enlarged in recent years, the inspection can be observed while mounting the LCD glass and moving it in various directions. An apparatus was provided.

In addition, in the related art, a method of spraying steam on the surface of the LCD glass is sometimes used in parallel at the inspection site as a means for inspecting the LCD glass more easily. If steam is frosted on the LCD glass surface, for example, scratches or stains generated on the LCD glass surface are clearly displayed, such as when blowing on the glass window.

On the other hand, the conventional LCD inspection apparatus for mounting and inspecting the LCD glass, tilting the inspection table equipped with the LCD glass with the front and rear tilt motor and the left and right tilt motor, and rotates the inspection table It is connected to the table so that it can be rotated by a motor.The rotating table is mounted on the X-direction table so that it can be linearly moved in the X-direction by the motor and the ball screw. By having a structure that allows the linear movement in the Y direction, the operator was to drive the motor using a motor operation switch to perform the inspection while moving in the direction that is easy to observe the LCD glass mounting table.

However, conventionally, as a method of injecting steam on the surface of the LCD glass, a very conventional method of heating the water separately from the LCD inspection device and admitting the steam generated from the heated water to the LCD glass as a temporary measure in the field. There was this. For example, a very primitive and ad hoc method was used in which a cooking frying pan was heated with water, and then the frying pan was brought close to the bottom of the LCD glass to let steam generated from the frying pan into the LCD glass.

However, such a conventional method is difficult to control the amount and temperature of the steam, the steam effect is reduced due to the influence of the outside air, the local inspection is also difficult, and furthermore, the vapor particles are large and contain a lot of moisture, which is wrong. Meanwhile, water droplets were formed on the LCD glass surface.

In the conventional inspection apparatus as described above, the operation of moving the LCD glass moves only by driving the motor by a switch operation. Therefore, the LCD glass is always moved at the same speed by the constant speed of the motor. Therefore, there are many cases where the moving speed of the LCD glass does not match the inspection speed of the inspector. In other words, the inspector has a different inspection ability for each individual, and the moving speed of the LCD glass is maintained uniformly regardless of it, so it is difficult to determine the defect factor when the sensory speed and the moving speed of the LCD glass do not match. However, even if there are defective parts, there is a problem that cannot be found. For example, since the LCD glass inspection apparatus should always be operated only by driving of the motor, fine adjustment of the LCD glass is difficult and time consuming. The inspector operates the switch to drive the motor. Even a skilled examiner suffers from the inconvenience of having to repeat the operation several times because it is difficult to precisely adjust the LCD to the desired position and angle.

The present invention has been made to solve the above problems, the first object of the present invention is to spray the steam generator and the steam generated from the steam generator to the LCD glass surface through the nozzle, to apply the steam easily and uniformly To make it possible. In addition, in the steam injection test, the particles generated from the water are made of large and wet primary steam again into a fine dry dry secondary steam, and then the secondary steam evenly sprayed on the LCD glass surface through the nozzle to the LCD The present invention also provides an LCD glass inspection apparatus which can easily detect minute defects on the glass surface and prevent water droplets from forming on the LCD glass or the nozzle tip.

The second object of the present invention is to vaporize the LCD glass by spraying cooling air on the surface of the LCD glass before spraying the steam to cool the LCD glass, and also by spraying cooling air after the inspection, thereby facilitating adhesion of the steam. To quickly remove it.

In addition, the third object of the present invention, the examiner is to configure the inspection table in the desired angle vigorously manual structure by the inspector can adjust the angle of the LCD glass in a quick, accurate and convenient way according to the lighting or inspection site It is in such a way.

In addition, the fourth object of the present invention is equipped with a clutch mechanism capable of intermitting the transmission power in the rotation of the inspection table or the X, Y-direction transfer to perform the rotation and transfer operation of the table manually as well as the motor at the convenience of the inspector. The present invention provides a convenient LCD glass inspection apparatus that enables the inspector to operate with a sense of unity with respect to the inspection apparatus.

1 is a perspective view showing the entire structure of the LCD glass inspection apparatus according to the present invention

2 is a view schematically showing a steam injection unit for injecting steam on the LCD glass surface according to the present invention

3 is a schematic illustration of a cooling unit for injecting cooling air onto an LCD glass surface in accordance with the present invention.

4 shows an up-down structure of the cooling unit according to the present invention.

Figure 5a is a perspective view showing in detail the tilting unit according to the present invention

FIG. 5B is a cross-sectional view of the tilting unit of FIG. 5A viewed from the "X" direction of FIG. 5A

FIG. 5C is a cross-sectional view of the tilting unit of FIG. 5A viewed from the “Y” direction of FIG. 5A.

6 is a view showing in detail the turn unit according to the present invention;

FIG. 7A is a view of the first and second base plates and the lower base of the present invention and is viewed from the "X" direction of FIG.

FIG. 7B is a detailed view of a brake unit for power interruption of the first base plate in FIG. 7A; FIG.

7C is a view illustrating a state in which power is connected by the brake unit in FIG. 7B.

FIG. 8A is a view of the first and second base plates and the lower base of the present invention and is viewed from the “Y” direction of FIG. 1.

FIG. 8B is a detailed view of the brake unit for power interruption of the second base plate in FIG. 8A; FIG.

8C is a view illustrating a state in which power is connected by the brake unit in FIG. 8B;

<Explanation of symbols for the main parts of the drawings>

10: inspection table 11: guide pin

12: support pin 13: adsorption means

14 handle

100: steam injection unit 101: steam generator

110: primary steam generator 111: heating vessel

112: heater 113: connector

114, 124, 142: flow control valve 120: secondary steam generator

121: nozzle 122: heater

123: extension tube 130: nozzle

131: pipeline 140: compressor

200: cooling unit 201: cooling piping

202: nozzle 203: heat exchanger

204: blower 205: support plate

206: working cylinder 300: tilting unit

310: first yoke member 314: torque controller

330: second yoke member 334, 335: hinge shaft

350: third yoke member 354: torque controller

400: turn unit 401: rotation axis

401a, 405a: Pulley 402: Mount

404: belt 405: motor

406: reducer 407: clutch

500: first base plate 501,601: L guide

502,602: guide rail 503,603: slider

504,604: Motor 505,506,605,606: Pulley

507,607: Belt 508,608: Brake unit

509,609: upper friction plate member 510,610: fluid cylinder

511,611: upper and lower operating part 512,612: lower friction plate member

600: second base plate 700: lower base

In order to achieve the first object described above, the LCD glass inspection apparatus according to the present invention includes an inspection table for mounting an LCD glass, an inclination angle of the inspection table, and a rotation of the inspection table in the XY direction. An inspection apparatus for inspecting scratches, stains, liquid crystal injection state, etc. of an LCD including an apparatus, comprising: a steam generator for heating water to generate steam; A plurality of nozzles disposed on the inspection table for injecting steam generated from the steam generator to the LCD glass surface; And a flow rate control valve installed in an extension pipe connecting the steam generator and the plurality of nozzles to control an amount of steam supplied to the nozzle. Characterized in that comprises a.

Further, the steam generator, the primary steam generator to heat the water primarily to generate steam, and the wet and large vapor obtained from the primary steam generator is evaporated again to generate dry steam of fine particles Characterized in that it consists of a secondary steam generator that is supplied to the plurality of nozzles.

In order to achieve the second object, the LCD glass inspection apparatus according to the present invention may cool the LCD glass prior to injecting the secondary steam to the LCD glass so that the secondary steam can be easily attached to the LCD glass surface. And after the inspection is completed, further comprising a cooling unit for injecting cooling air to the LCD glass surface to remove steam from the LCD glass surface.

In order to achieve the third object, the LCD glass inspection apparatus according to the present invention includes: a tilting unit to which an inspection table for mounting the LCD glass is fixed on an upper side thereof; A turn unit having a rotation shaft connected to a lower portion of the tilting unit to rotate the tilting unit by the rotation of the rotation shaft; A first base plate on which the turn unit is mounted; A second base plate on which the first base plate is slidably mounted in a straight line; And a lower base on which the second base plate is slidably mounted in a direction orthogonal to the conveying direction of the first base plate. The tilting unit may include: a first yoke member fixed to an upper end of a rotation shaft of the turn unit and rotated by a rotation shaft, and a second yoke member rotatably hinged to the first yoke member in a forward and backward direction; And a third yoke member rotatably hinged to the second yoke member in a left and right direction and having an inspection table fixed to an upper surface thereof.

Here, hinge shafts are fixed to both left and right sides of the second yoke member, and both hinge shafts are rotatably coupled to both sides of the first yoke member, and at least one of both sides of the first yoke member. A torque controller is provided to prevent the second yoke member from inclining itself with respect to the first yoke member by pressing the hinge shaft of the second yoke member with a constant force to suppress arbitrary rotation of the hinge shaft. Hinge shafts are fixed to both sides of the front and rear sides, and both sides of the third yoke member are rotatably coupled to both of the hinge shafts, and at least one of both sides of the third yoke member includes a hinge shaft of the second yoke member. Torque cone which prevents the third yoke member from inclining itself with respect to the second yoke member by pressing with a constant force to suppress arbitrary rotation of the hinge shaft. The controller may be provided.

In order to achieve the fourth object of the present invention, the turn unit is rotatably installed on a mount whose rotational axis is mounted on the first base plate, and is driven by a motor and belt connection. Is characterized in that configured to be connected via a clutch to intermittent the power of the motor.

In addition, the sliding configuration of the first base plate with respect to the second base plate and the sliding configuration of the second base plate with respect to the lower base may be made through an LM guide to manually transport the first and second base plates. You can do that.

Alternatively, the sliding configuration of the first base plate with respect to the second base plate and the sliding configuration of the second base plate with respect to the lower base are provided with a belt by motor transmission at each of the second base plate and the lower base. The first base plate and the second base plate may be connected to the respective belts so that the first and second base plates may be transferred by the motor and the belt.

According to the most preferred direction of the present invention by interposing the brake unit to the connecting portion of the first base plate and the belt and the connecting portion of the second base plate and the belt, respectively, so that the power can be connected or released through the brake unit The first base plate and the second base plate may be selectively transported manually or by a motor.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

1 is a view showing the overall configuration of the LCD glass inspection apparatus according to the present invention.

As shown in Figure 1, the preferred LCD glass inspection apparatus according to the present invention is large, the inspection table 10, steam injection unit 100, cooling unit 200, tilting unit 300, turn unit 400, The first base plate 500, the second base plate 600, and the lower base 700 are included.

In the drawings, the inspection table 10, the steam injection unit 100 and the cooling unit 200 are shown by a broken line to help understand the overall structure of the invention.

The LCD table (not shown) to be inspected is placed on the inspection table 10, and a plurality of guide pins 11 are provided at the outer circumference of the upper surface of the inspection table 10 to guide the side of the LCD glass. Inside the (11), a plurality of support pins 12 supporting the bottom of the LCD glass are provided, and a plurality of adsorption means 13 for vacuum adsorption of the LCD glass are provided. And the side of the examination table 10 is provided with a handle 14 for holding the examination table 10 by hand to adjust the position.

The steam injection unit 100 sprays and attaches fine steam to the LCD glass surface before inspecting the LCD glass. When vapor is attached to the LCD glass surface, stains or scratches on the LCD glass surface are visibly present, so that the inspector can easily determine. The cooling unit 200 facilitates the adhesion of the steam by injecting cooling air to the LCD glass to maintain the temperature of the LCD glass lower than the temperature of the steam prior to injecting steam on the surface of the LCD glass, and the inspection Afterwards, vapors removed on the LCD glass surface are removed by evaporation.

The examination table 10 is mounted on the top of the tilting unit 300, and the inspector may tilt the examination table 10 using the tilting unit 300. The tilting unit 300 is mounted to the turn unit 400, and includes a rotating shaft 401 connected to the lower portion of the tilting unit 300, thereby rotating the tilting unit 300 by the rotation of the rotating shaft 401. Rotated. The first base plate 500 linearly moves in the X-axis direction in the drawing, and the turn unit 400 is mounted on an upper portion thereof. The second base plate 600 linearly moves in the Y-axis direction in the drawing, and the first base plate 500 is slidably mounted in the X-axis direction. The second base plate 600 is mounted on the lower base 700 so as to be slidable in the Y-axis direction.

2 is a detailed view of the steam injection unit 100 described above. Reference is made in parallel to FIG. 1.

The steam injection unit 100 is a steam generator 101 for heating the water to generate steam, and to the test table to inject the steam generated from the steam generator 101 to the LCD glass surface. Flow rate control for controlling the amount of steam supplied to the nozzle 130 is installed in the plurality of nozzles 130 and the extension pipe 123 connecting the steam generator 101 and the plurality of nozzles 130 are arranged Valve 124.

In the present embodiment, the steam generator 101 is a primary steam generator 110 that heats water to generate steam primarily, and again by evaporating the wet steam obtained from the primary steam generator 110 to be fine. It consists of a secondary steam generator 120 to produce a dry steam of particles.

In addition, in the present embodiment, the first steam generator 110 includes a heating container 111 capable of filling water therein and a heater 112 for evaporating the water contained in the heating container 111 by heat. . The secondary steam generator 120 is connected to the primary steam generator 110 and the connection pipe 113, the flow control valve 114 is installed in the middle of the connection pipe 113. The secondary steam generator 120 is provided with a heater 122, and at one side, a nozzle 121 provided at an end of the connecting pipe 113 protrudes. Humid, large particle steam supplied from the primary steam generator 110 and injected into the nozzle 121 is evaporated again by the heater 122 to reduce moisture and generate fine secondary steam. . The nozzle 130 is installed in a plurality of intervals at a predetermined interval in the pipe 131 piped on the upper surface of the inspection table 10, the pipe 131 is the secondary steam generator 120 and the aforementioned extension pipe ( While connected to 123, the flow control valve 124 is installed in the middle of the extension pipe 123.

In addition, the present invention supplies a compressed air to the steam generator 101, the compressor 140 for pumping the steam generated in the steam generator 101 to the plurality of nozzles 130, and from the compressor 140 It further includes a flow control valve 142 is disposed on the conduit 141 connecting the steam generator 101. In the illustrated embodiment, the compressor 140 is connected to the lower portion of the secondary steam generator 120 to supply compressed air to the inside of the secondary steam generator 120.

Referring to Figure 2, looks at the process of injecting steam to the LCD glass surface. First, when water (pure water) inside the heating container 111 is heated by the heater 112, steam is generated in the first steam generator 110. When steam is generated, the pressure of the upper portion of the heating vessel 111 of the primary steam generator 110 is increased, and the boosted primary steam is connected to the connection pipe 113, the flow control valve 114, and the nozzle 121. It is discharged into the secondary steam generator 120 via. The primary steam discharged into the secondary steam generator 120 is evaporated again by the heater 122 to generate secondary steam in a state in which particles are fine and moisture is removed compared to the primary steam. . The secondary steam generated by the secondary steam generator 120 is boosted by the compressed air from the compressor 140 to pass through the extension pipe 123 and the flow control valve 124, and then through the nozzle 130. It is sprayed on the LCD glass 50 surface. Here, the injection pressure of the nozzle 130 is controlled by the flow control valve 124 on the conduit 131 connecting the secondary steam generator 120 and the nozzle 130, the concentration of the steam Connecting the secondary steam generator 120 from the compressor 140 and the flow control valve 114 on the connection pipe 113 connecting the primary steam generator 110 and the secondary steam generator 120 The flow rate control valve 142 is properly arranged.

As described above, the present invention is equipped with a steam generator 101, a nozzle 130, and a flow control valve 124 to easily and uniformly inject steam onto the LCD glass surface. Therefore, spots and scratches on the LCD glass surface can be easily and precisely inspected. Particularly, according to the present invention, the wet steam having large particles generated primarily in the first steam generator 110 is evaporated again in the second steam generator 120 to make dry steam having a fine particle state, and then a plurality of nozzles ( 130 is evenly sprayed on the LCD glass surface. Since the secondary steam is very fine and dry, it is easier to detect minute scratches or stains on the LCD glass surface than the method of leaving the wet and large-sized steam generated primarily from water on the LCD glass surface. do. In addition, by using the secondary steam as described above, there is no fear that water droplets may form on the surface of the LCD glass or the tip of the nozzle 130 due to moisture contained in the steam, thereby preventing the problem of adversely affecting the process.

3 and 4 show the cooling unit 200. See FIG. 1 in parallel.

As shown in FIGS. 1 and 3, the cooling unit 200 includes a cooling pipe 201 formed along the circumference of the LCD glass and disposed on the cooling pipe 201 toward the LCD glass. A plurality of nozzles 202, a heat exchanger 203 for cooling the air, and cooling air generated from the heat exchanger 203 are pumped to the cooling pipe 201 to discharge cooling air to the nozzle 202. Blower 204 to be made. Further, in the present invention, the cooling pipe 201 is mounted to the support plate 205, as shown in Figure 4, the support plate 205 is connected to the operation cylinder 206, to the operation cylinder 206 As a result, the support plate 205 moves up and down to allow the cooling pipe 201 to move up and down toward the LCD glass. Therefore, when the cooling air is to be sprayed on the LCD glass, the operation cylinder 206 is lowered to bring the nozzle 202 close to the LCD glass, and then the cooling air is injected. After the injection is finished, the operation cylinder 206 is sprayed. By raising it, the cooling unit 200 is spaced apart from the LCD glass so as not to disturb the moving of the examination table 10 and also to prevent the operator's view.

The present invention prior to spraying the secondary steam to the LCD glass surface through the above-described steam injection unit 100 by spraying the cooling air to the LCD glass surface through the cooling unit 200 to increase the temperature of the LCD glass secondary steam Cool below temperature. If the temperature of the LCD glass is kept lower than the temperature of the secondary steam, it is easy to attach the secondary steam, so a very accurate inspection can be performed. In addition, by injecting cooling air even after the inspection is completed, the vapor adhering to the LCD glass surface is rapidly evaporated to dryness. Therefore, the inspection process can be advanced quickly, and the problem of affecting other processes by the unremoved steam can also be prevented.

5A to 5C show the tilting unit 300 described above in detail.

FIG. 5A is a perspective view illustrating the tilting unit 300 together with the turn unit 400 and the first base plate 500.

As shown in FIG. 5A, the tilting unit 300 is fixed to the upper end of the rotating shaft 401 of the turn unit 400 and rotated by the rotating shaft 401. The tilting unit 300 includes a first yoke member 310 fixed to an upper end of the rotation shaft 401 and a front and rear directions (“X” direction in the drawing) in front of the first yoke member 310. And a second yoke member 330 rotatably hinged to the second yoke member 330, and a third yoke member 350 rotatably hinged to the second yoke member 330. The above-described examination table 10 is fixed to the upper surface of the third yoke member 350. Therefore, when the inspector holds the examination table 10 by hand and tilts it in any direction, the examination table is rotated by the left and right rotations of the third yoke member 350 and the forward and rearward rotation of the second yoke member 330. 10 can be tilted at any angle. In the illustrated example, the first yoke member 310 has a lower plate 311 fixed to the rotation shaft 401 of the turn unit 400, and side plates placed on both left and right sides of the lower plate 311. 312. The second yoke member 330 is placed on both sides of the lower plate 331 and the left and right sides of the lower plate 331, and is moved forward and backward on both side plates 312 of the first yoke member 310. First side plate 332 rotatably hinged to the second side plate and a second side plate placed on the lower plate 331 at both sides of the first side plate 332 at a right angle, i.e., in the front and rear directions. Consists of 333. The third yoke member 350 extends downward from both sides of the upper plate 351 to which the examination table 10 is fixed, and the second side plate of the second yoke member 330. And a side plate 352 rotatably hinged to the left and right sides 333.

FIG. 5B is a cross-sectional view seen from the direction “X” of FIG. 5A, and FIG. 5C is a view seen from the “Y” direction of FIG. 5A, and shows the hinge structures of the second and third yoke members 330 and 350.

As shown in FIGS. 5B and 5C, hinge shafts 334 are fixed to the first side plates 332 on both the left and right sides of the second yoke member 330, and the hinge shafts 334 are fixed to both side hinge shafts 334. Both side plates 312 of the first yoke member 310 are rotatably coupled via a bearing 313. At least one of both sides of the first yoke member 310 presses the hinge shaft 334 of the second yoke member 330 with a constant force to suppress an arbitrary rotation of the hinge shaft 334 so as to suppress the second yoke member. A torque controller 314 is provided to prevent the 330 from inclining itself relative to the first yoke member 310 (the hinge shaft 334 rotates). In the illustrated example, the torque controller 314 is adopted as a kind of known magnetic damper, and the hinge shaft 334 is applied to the hinge shaft 334 by a magnetic force 314a in the middle of the torque controller 314. Random rotation of 334 is prevented. That is, when the inspector puts the second yoke member 330 in an inclined state at an angle, the weight of the second yoke member 330 and the third yoke that apply a load to the second yoke member 330 are maintained. The rotational force to rotate the hinge shaft 334 by the weight of the member 350, the examination table 10 and the LCD glass is blocked by the torque controller 314. Therefore, even when the examination table 10 is inclined at any angle, it is no longer inclined by itself, so that the inclined table 10 can be continuously maintained.

In addition, also in the hinge structure of the third yoke member 350, the hinge shaft 335 is fixed to the second side plate 333 on both sides before and after the second yoke member 330, both sides Both side plates 352 of the third yoke member 350 are rotatably coupled to the hinge shaft 335 via the bearing 353, and at least one of both sides of the third yoke member 350 may be provided. By pressing the hinge shaft 335 of the second yoke member 330 with a constant force to suppress the arbitrary rotation of the hinge shaft 335, the third yoke member 350 is spontaneously with respect to the second yoke member 330. A torque controller 354 is provided to prevent tilting.

As described above, the present invention has a structure in which the tilting unit 300 is rotatably hinged to the plurality of yoke members 310, 330, and 350, so that the tilting unit 300 is manually operated unlike the conventional method of operating the tilting unit 300 by forcible power such as a motor. Can be operated with Therefore, the inspector can tilt the examination table 10 at a desired angle very fine, convenient, and quick, and the local inspection of a large LCD glass can be performed very accurately and conveniently. In addition, by providing the torque controllers 314 and 354 at the hinge portions of the second and third yoke members 330 and 350, the inspection table 10 may be stopped as it is at an angle. Also, as is well known, the torque controller 314, 354 maintains a constant and stable speed when the tester tilts the test table 10 by the action of suppressing rotation of each hinge shaft 334, 335 with a constant force.

6 shows a turn unit 400 according to the present invention. It demonstrates with reference to FIG. 5A.

As shown in the figure, the rotation shaft 401 of the turn unit 400 is rotatably installed in the mount 402 installed on the upper surface of the first base plate 500. A pulley 401a is provided at a lower end of the rotating shaft 401, and a pulley 405a connected to the pulley 401a of the rotating shaft 401 and the belt 404 is provided at one side of the first base plate 500. The motor 405 is provided. As such, the rotation shaft 401 driven by the motor 405 extends upward and is connected to the lower plate 331 of the first yoke member 310 at the end. In addition, in the illustrated embodiment, a reduction gear 406 is interposed in the process of extending the rotation shaft 401 to output after the rotation of the motor 405 is decelerated.

In addition, according to a preferred direction of the present invention in the middle of the connection between the rotary shaft 401 and the first yoke member 310, the clutch 407 that can control the power by the motor 405, that is to connect or cut off ). The clutch 407 is a kind of known magnetic clutch. 6, the end of the output shaft 406a of the reduction gear 406 connected to the rotational shaft 401 to be power transmission is connected to the first block 408, and the first block ( The 408 is connected to the second block 409 having the shaft 410 formed thereon, and the lower drum 411 is fixed to the second block 409, and the thrust bearing 412 is mounted on the lower drum 411. The upper drum 413 is connected to be idling so as to be idle, and the upper end of the upper drum 413 is fixed to the first yoke member 310. The shaft 410 of the second block 409 is the upper drum ( 413 to idle through the bearing 414. The shaft 410 is coupled to the magnetic body 415 to be integrally rotated by the key 416, and the hub 417 is fixed to the upper drum 413, and the sliding sleeve is connected to the hub 417. 418 is coupled to the upper and lower slidable by the coupling of the spline, serration or the projection and the groove, the lower surface of the sliding sleeve 418 to form a clutch gear (419), the magnetic body 415 of the The upper surface has a structure in which a clutch gear 415a opposite to the clutch gear 419 of the sleeve 418 is formed.

As a result, the first and second blocks 408 and 409, the shaft 410, the lower drum 411, and the magnetic body 415 are connected to the output shaft 406a of the speed reducer 406 integrally. The yoke member 310 is connected to the upper drum 413, the hub 417, and the sleeve 418 to rotate integrally with the thrust bearing 412 on the lower drum 411 and the shaft 410. The bearings 414 are connected to be idle with each other. Therefore, the first yoke member 310 has a structure in which the power from the reducer 406 output shaft 406a and the thrust bearing 412 and the bearing 414 are cut off (idle). In this state, since the power from the motor 405 is not transmitted to the first yoke member 310, that is, the tilting unit 300, the inspection table 10 may be manually operated. At this time, the sliding sleeve 418 is in a state in which the sliding sleeve 418 is upwardly slid by a magnetic force generated by applying a current to the coil 415b of the magnetic body 415. In such a state, when the tilting unit 300 is to be driven by the motor 405, the magnetic force is dissipated when the current applied to the coil 415b of the magnetic body 415 is cut off. Moves downward so that the clutch gear 419 of the sleeve 418 meshes with the clutch gear 415a of the magnetic body 415 to transmit power.

As such, according to the preferred direction of the present invention, first, the turn unit 400 may be driven only by the motor 405. In particular, according to a more preferred direction of the present invention can be interrupted or connected to the power via the clutch 407 in the power transmission process between the turn unit 400 and the tilting unit 300. Therefore, there is an advantage in that the inspection can be performed while appropriately selecting one of the method of rotating by the forced driving of the motor 405 or the method of manually rotating according to the inspector's intention.

7A, 7B, 7C, 8A, 8B, and 8C show connection details of the first base plate 500, the second base plate 600, and the lower base 700 in detail. See parallel with FIG. 1.

As shown in the figure, the linear transfer of the first base plate 500 with respect to the second base plate 600 has a structure to be guided by the Linear Motion Guide (501). The L guide 501 is provided with a guide rail 502 on both sides of the upper surface of the second base plate 600, similar to the known L guide, and the guide rail (on the lower surface of the first base plate 500) It is made of a structure provided with a slider 503 slidably coupled to the 502. In addition, the linear transfer of the second base plate 600 with respect to the lower base 700 also has a structure to be guided by the LM guide 601. Similarly to the known LM guide 601, the L guide 601 is provided with guide rails 602 on both sides of the upper surface of the lower base 700, and the guide rail 602 on the lower surface of the second base plate 600 The slider 603 is provided to be slidably coupled to the structure. The present invention enables the first base plate 500 and the second base plate 600 to be manually transported. That is, when the examiner grasps the handle 14 of the examination table 10 and moves, the first and second base plates 500 and 600 are guided by the respective L-M guides 501 and 601 to move the X-axis and the Y-axis. Combined feed in the axial direction is possible.

In addition, according to another direction of the present invention, a method of forcibly transferring the first base plate 500 and the second base plate 600 by manipulating a switch is also possible. To this end, the embodiment of the present invention includes a motor 504 having a pulley 505 on one side of the upper surface of the second base plate 600 and a corresponding pulley 506 (see FIG. 1) on the other side. The pulley 505 of the motor 504 and the corresponding pulley 506 are connected by a belt 507. In addition, the first base plate 500 may be driven by directly coupling the first base plate 500 to the middle of the upper strand 507a of the upper and lower strands 507a and 507b of the belt 507 connected as described above. When the inspector operates the motor 504 operation switch (not shown), the motor 504 rotates, and the upper strand 507a of the belt 507 is caused by the movement of the belt 507 by the rotation of the motor 504. The first base plate 500 which is integrally fastened to) is transferred. In this case, the LM guide 501 guides the linear transfer of the first base plate 500.

Similarly to the first base plate 500, in the case of the second base plate 600, the motor 604 having the pulley 605 is provided on one side of the upper surface of the lower base 700, and the other base plate is provided. On the side is provided with a corresponding pulley 606 (see FIG. 1), and the pulley 605 of the motor 604 and the corresponding pulley 606 by a belt 607, above the belt 607, The second base plate 600 is directly fastened to the middle of the upper strand 607a of the lower two strands 607a and 607b. When the inspector operates the motor 604 operation switch (not shown), the motor 604 rotates, and the upper strand 607a of the belt 607 is moved by the rotation of the motor 604. The second base plate 600 which is integrally fastened to) is transferred. In this case, the L guide 601 guides the linear transfer of the second base plate 600.

In particular, the most preferred configuration in accordance with the fourth object of the present invention is to manually transfer the first base plate 500 and the second base plate 600 or to be automatically transferred by the motors 504 and 604. Is optional. To this end, in the present invention, in the connection of the first base plate 500 and the belt 507, and in the connection of the second base plate 600 and the belt 607, respectively, the brake unit 508 ( 608) is provided.

First, as illustrated in FIG. 7B, the brake unit 508 for controlling the connection between the first base plate 500 and the belt 507 may be formed under the belt 507 under the first base plate 500. The upper friction plate member 509 adjacent to the upper surface of the upper strand 507a) is fixed, and the fluid cylinder 510 by pneumatic or hydraulic pressure is fixed to another side of the lower portion of the first base plate 500, and The lower friction plate member 512 disposed on the lower surface of the upper strand 507a of the belt 507 is fixed to the upper and lower operating portions 511 of the fluid cylinder 510. 7B shows that the upper and lower friction plate members 509 and 512 are separated from the upper strand 507a of the belt 507 by moving the upper and lower operating portions 511 of the fluid cylinder 510 downward so that the power connection is performed. In this state, the first base plate 500 may be manually transferred. 7C shows a state in which power is connected. When the upper and lower operation portions 511 of the fluid cylinder 510 are raised, the lower friction plate member 512 presses the upper strand 507a of the belt 507 to the upper friction plate member 509 to bring it into close contact. The power is connected. As a result, the first base plate 500 is transferred by the movement of the belt 507 according to the driving of the motor 504.

Next, as shown in FIG. 8B, the brake unit 608 that controls the connection between the second base plate 600 and the belt 607 is the belt 607 below the second base plate 600. The upper friction plate member 609 adjacent to the upper surface of the upper strand 607a) is fixed, and the fluid cylinder 610 by pneumatic or hydraulic pressure is fixed to another side of the lower part of the second base plate 600, and The lower friction plate member 612 which is disposed on the lower surface of the upper strand 607a of the belt 607 is fixed to the upper and lower operating portions 611 of the fluid cylinder 610. 8B shows that the upper and lower friction plate members 609 and 612 are separated from the upper strand 607a of the belt 607 by moving the upper and lower operating portions 611 of the fluid cylinder 610 downward so that the power connection is performed. In this state, the second base plate 500 may be manually transferred. 8C shows a state in which power is connected. When the upper and lower operation portions 611 of the fluid cylinder 610 are raised, the lower friction plate member 612 presses the upper strand 607a of the belt 607 to the upper friction plate member 609 to bring it into close contact. The power is connected. As a result, the second base plate 600 is transferred by the movement of the belt 607 according to the driving of the motor 604.

As described above, according to the present invention, the transfer of the first base plate 500 and the second base plate 600 can be performed by belt transmission, and the belt transmission thereof can be controlled by the brake units 508 and 608. There is an advantage in that manual and automatic feeds can be selected. For example, when the first base plate 500 needs to be transferred a lot, the motor 504 is operated after the power is connected through the brake unit 508. By operating the switch to transfer to the vicinity of the desired position, after that can be finely transferred manually by releasing the power connection of the brake unit 508. This operation is the same as in the case of the second base plate 600, so description thereof will be omitted.

As described above, the LCD device for inspecting the glass according to the present invention may uniformly and easily apply steam to the LCD glass surface through the steam generator 101, the plurality of nozzles 130, and the flow control valve 124. Accordingly, stains, scratches, and the like on the LCD glass surface can be easily discriminated. Furthermore, in the present invention, the particles generated from the primary evaporator 110 are evaporated again in the secondary steam generator 120 by making the large and wet primary steam regenerate into secondary steam in which the particles are fine and moisture is reduced. The secondary steam is sprayed on the LCD glass surface through the plurality of nozzles 130. In this case, since the vapor attached to the LCD glass surface is very fine, fine scratches or stains on the LCD glass surface appear more clearly, and thus a more precise inspection can be performed. In addition, since the secondary steam sprayed on the LCD glass surface is not only fine particles but also a lot of moisture is reduced, it is a very useful invention that can prevent water droplets from forming on the LCD glass surface or the tip of the nozzle 130.

In addition, according to the present invention, the tilting unit 300 has a structure in which a plurality of yoke members 310, 330, and 350 are rotatably hinged, and thus the tilting unit 300 may be manually operated. Accordingly, the inspector can incline the examination table 10 at a desired angle very finely, conveniently, and quickly, and can perform a local inspection of the LCD, especially a large size, very accurately and conveniently. In addition, by providing torque controllers 314 and 354 in the hinge structures of the second and third yoke members 330 and 350, the inspection table 10 may be maintained at an arbitrary angle while maintaining a constant speed when the inspection table 10 is manually operated. You can stop in the tilted state.

In addition, the present invention can be configured to drive the turn unit 400 only by the configuration by the motor 405, the power between the turn unit 400 and the tilting unit 300 according to a more preferred direction of the present invention When the clutch 407 is involved in the transmission process, the inspection can be performed while appropriately selecting one of a method of rotating by a forced driving of the motor 405 or a method of manually rotating, according to the inspector's intention.

In addition, according to the present invention, the transfer of the first base plate 500 and the second base plate 600 can be carried out by belt transmission, and the belt transmission thereof can be controlled by the brake units 508 and 608. It is convenient to perform the inspection while properly selecting manual and automatic transfer.

Claims (23)

An inspection table for mounting an LCD glass, a mechanism for adjusting the inclination angle of the inspection table, and a mechanism for rotating the inspection table in the XY direction to inspect the scratches, stains, liquid crystal injection state, etc. of the LCD glass In the inspection apparatus, A steam generator 101 for heating water to generate steam; A plurality of nozzles 130 disposed on the inspection table for injecting steam generated from the steam generator 101 onto the LCD glass surface; And A flow control valve (124) installed in the extension pipe (123) connecting the steam generator (101) and the plurality of nozzles (130) to control the amount of steam supplied to the nozzle (130); LCD glass inspection apparatus comprising a. The method of claim 1, Compressor 140 for supplying compressed air to the steam generator 101 to pump the steam generated by the steam generator 101 to the plurality of nozzles 130, and the steam generator 101 from the compressor 140 LCD glass inspection apparatus further comprises a flow control valve (142) disposed on the conduit (141) for connecting. The method according to claim 1 or 2, The steam generator 101, The primary steam generator 110, which primarily generates water by heating water, and the wet and large vapor obtained from the primary steam generator 110 are evaporated again to generate dry steam of fine particles. LCD glass inspection device, characterized in that consisting of a secondary steam generator 120 for supplying a plurality of nozzles (130). The method of claim 3, LCD glass inspection apparatus, characterized in that the flow control valve 114 is installed in the middle of the connection pipe 113 is connected to the secondary steam generator 120 from the primary steam generator (110). The method of claim 3, The primary steam generator 110 includes a heating vessel 111 capable of filling water therein, and a heater 112 for evaporating the water contained in the heating vessel 111. The secondary steam generator 120 evaporates the nozzle 121 for injecting the primary steam generated from the primary steam generator 110 and the steam injected from the nozzle 121 to evaporate the secondary steam again. LCD glass inspection apparatus comprising a heater 122 to generate. The method of claim 1, Prior to injecting the secondary steam into the LCD glass, the LCD glass is cooled so that the secondary steam can be easily attached to the LCD glass surface, and after the inspection is completed, to remove the vapor on the LCD glass surface. LCD glass inspection apparatus further comprises a cooling unit (200) for injecting cooling air to the LCD glass surface. The method of claim 6, The cooling unit 200, A cooling pipe 201 formed along the circumference of the LCD glass, a plurality of nozzles 202 disposed on the cooling pipe 201 toward the LCD glass, a heat exchanger 203 for cooling air; And a blower (204) for pumping cooling air generated from the heat exchanger (203) into the cooling pipe (201) to discharge cooling air to the nozzle (202). The method of claim 7, wherein The cooling pipe 201 is mounted to the support plate 205, which is connected to the operation cylinder 206 so that the cooling pipe 201 is directed to the LCD glass by the operation cylinder 206. LCD glass inspection device, characterized in that configured to be elevated. A tilting unit 300 to which the examination table 10 for mounting the LCD glass is fixed at an upper side thereof; A turn unit 400 having a rotating shaft 401 connected to a lower portion of the tilting unit 300 to rotate the tilting unit 300 by the rotation of the rotating shaft 401; A first base plate 500 on which the turn unit 400 is mounted; A second base plate 600 on which the first base plate 500 is slidably mounted in a straight line; And A lower base 700 on which the second base plate 600 is slidably mounted in a direction orthogonal to a conveying direction of the first base plate 500; Including, The tilting unit 300 is fixed to an upper end of the rotation shaft 401 of the turn unit 400 and is transferred to the first yoke member 310 and the first yoke member 310 that are rotated by the rotation shaft 401. The second yoke member 330 rotatably hinged in a rearward direction, the second yoke member 330 is rotatably hinged in left and right directions, and the inspection table 10 is fixed to an upper surface thereof. LCD device, characterized in that it comprises a yoke member (350). The method of claim 9, Hinge shafts 334 are fixed to both left and right sides of the second yoke member 330, and both hinge shafts 334 are rotatably coupled to both sides of the first yoke member 310. At least one of both sides of the first yoke member 310 presses the hinge shaft 334 of the second yoke member 330 with a constant force to suppress an arbitrary rotation of the hinge shaft 334 so that the second yoke member ( Torque controller 314 is provided to prevent the 330 from inclining itself with respect to the first yoke member 310, Hinge shafts 335 are fixed to both sides of the second yoke member 330 before and after the second yoke member 330, and both sides of the third yoke member 350 are rotatably coupled to both hinge shafts 335. At least one of both sides of the third yoke member 350 presses the hinge shaft 335 of the second yoke member 330 with a constant force to suppress arbitrary rotation of the hinge shaft 335 so as to suppress the third yoke member ( The LCD glass inspection apparatus, characterized in that the torque controller 354 is provided to prevent the 350 from inclining itself with respect to the second yoke member (330). The method of claim 9, The turn unit 400, And a mount 402 mounted on the first base plate 500 to which the rotation shaft 401 is rotatably installed, and a motor 405 for driving the rotation shaft 401 with the belt 404. LCD glass inspection device characterized in that. The method of claim 9, The turn unit 400 is rotatably installed on a mount 402 whose rotating shaft 401 is mounted on the first base plate 500, and is driven by connecting the motor 405 and the belt 404. And, the first yoke member 500 is connected to the clutch 407 via a medium, the LCD glass inspection apparatus, characterized in that configured to be able to control the power of the motor (405). The method of claim 9, A sliding configuration of the first base plate 500 with respect to the second base plate 600 may include guide rails 502 and the first base plate 500 provided on both sides of the upper surface of the second base plate 600. LCD glass inspection device, characterized in that consisting of the LM guide 501 including a slider 503 provided on the lower surface. The method according to claim 9 or 13, The first base plate 500 includes a motor 504 having a pulley 505 on one side of an upper surface of the second base plate 600 and a corresponding pulley 506 on the other side thereof. The pulley 505 of the motor 504 and the corresponding pulley 506 are connected by a belt 507, and the first base plate 500 in the middle of the upper strand of the two strands above and below the belt 507. LCD glass inspection apparatus, characterized in that the drive to be connected. The method of claim 14, In the connection between the first base plate 500 and the belt 507, a brake unit 508 is interposed between the first base plate 500 and the upper strand of the belt 507. LCD glass inspection apparatus, characterized in that. The method of claim 15, The brake unit 508, An upper friction plate member 509 adjacent to an upper strand upper surface of the belt 507 is fixed to a lower portion of the first base plate 500, and a fluid cylinder (or lower portion) is provided on another side of the lower portion of the first base plate 500. 510 is fixed, and the lower friction plate member 512 which is disposed on the upper and lower surfaces of the belt 507 is fixed to the upper and lower operation portions 511 of the fluid cylinder 510, and the fluid cylinder 510 is fixed. The first base plate 500 by the lower friction plate member 512 closes or detaches the upper strand of the belt 507 to the upper friction plate member 509 by raising or lowering the upper and lower operating parts 511. ) And the belt 507 is connected to the LCD release device characterized in that configured to be configured. The method of claim 9, The sliding structure of the second base plate 600 with respect to the lower base 700 is provided on the lower surface of the guide rail 602 and the second base plate 600 provided on both sides of the upper surface of the lower base 700. LCD device, characterized in that the LCD comprises a guide 601 including a slider (603). The method according to claim 9 or 17, The second base plate 600 includes a motor 604 having a pulley 605 on one side of an upper surface of the lower base 700 and a corresponding pulley 606 on the other side of the lower base 700. The pulley 605 of the 604 and the corresponding pulley 606 is connected to the belt 607, the second base plate 600 in the middle of the upper strand of the upper and lower strands of the belt 607 LCD glass inspection device, characterized in that to be driven by connecting. The method of claim 18, In the connection between the second base plate 600 and the belt 607, a brake unit 608 interposed between the second base plate 600 and the upper strand of the belt 607 is interposed therebetween. LCD glass inspection apparatus, characterized in that. The method of claim 19, The brake unit 608, An upper friction plate member 609 adjacent to an upper strand upper surface of the belt 607 is fixed to a lower portion of the second base plate 600, and a fluid cylinder is disposed on the other side of the lower portion of the second base plate 600. 610 is fixed, and the lower friction plate member 612 disposed on the upper and lower operating portions 619 of the fluid cylinder 610 and the lower strand of the upper portion of the belt 607 is fixed to the fluid cylinder 610. When the lower friction plate member 612 closes or detaches the upper strand of the belt 607 to the upper friction plate member 609 by raising or lowering the lower operation part 611, the second base plate 600 is provided. And the LCD 607 is configured to be connected or released. The method of claim 9, The device, A steam generator 101 for heating water to generate steam; A plurality of nozzles (130) disposed on the inspection table (10) for injecting steam generated from the steam generator (101) to the LCD glass surface; A flow control valve (124) installed in the extension pipe (123) connecting the steam generator (101) and the plurality of nozzles (130) to control the amount of steam supplied to the nozzle (130); And Cooling unit for cooling the LC glass before injecting steam to the LCD glass, or injecting cooling air to the LCD glass surface to remove the vapor applied to the LCD glass after the inspection of the LCD glass ( LCD device, characterized in that it comprises a 200). The method of claim 21, The steam generator 101, Water is accommodated in the heating vessel 111, the primary steam generator 110 for generating steam by heating the water received by the heater 112; While having a heater 122 therein, it is connected to the primary steam generator 110, and sprays the steam generated by the primary steam generator 100 to the heater 122, the particles are fine and moisture is A secondary steam generator 120 producing reduced secondary steam; And A plurality of nozzles 130 connected from the secondary steam generator 120 to spray secondary steam onto the LCD glass seated on the test table 10; Including, Compressor 140 for supplying compressed air to the secondary steam generator 120 to pump the secondary steam generated by the secondary steam generator 120 to the plurality of nozzles 130, and the compressor ( LCD glass inspection apparatus further comprises a flow control valve (142) disposed on the conduit (141) connecting the second steam generator (120) from. The method of claim 21, The cooling unit 200, A heat exchanger 203 for cooling air, a cooling pipe 201 formed along the circumference of the LCD glass, a plurality of nozzles 202 disposed on the cooling pipe 201 toward the LCD glass, And a blower (204) for pumping cooling air generated from the heat exchanger (203) into the cooling pipe (201) to discharge cooling air to the nozzle (202).