KR100605088B1 - A test apparatus for the plate board - Google Patents

Abstract

The present invention relates to a flat panel display inspection apparatus for visually inspecting defects present in a flat plate by reflecting light emitted from a light source generator onto a reflecting plate and illuminating the flat plate.

Such inspection apparatus includes a frame; A light source generator installed in the frame and generating light; A reflector reflecting light emitted from the light source generator; Driving means for reciprocating the frame provided with the light source generator and the reflecting plate in all directions so that the reflected light reflected by the reflecting plate can be irradiated to the entire flat panel display; It is installed between the light source generator and the reflector plate and a plurality of color filters are detachably installed on one side of the plate to adjust the illuminance of the light on the other plate, so that the light irradiated to the reflector from the light source generator Adjusting means for varying the illuminance and color of the light to be illuminated on the flat panel display to be inspected through the color filter and the illuminance filter according to the inspection conditions; And a control panel for selectively rotating the plate body of the adjusting means by a button operation so as to match the selected filters among the color filter and the illuminance filter to adjust the color and illuminance of the light according to the inspection condition.

Flat panel display inspection device, color filter, illuminance filter

Description

A test apparatus for the plate board             

1 is a conceptual diagram of an embodiment of a flat panel display inspection apparatus according to the related art

2 is a conceptual diagram of another embodiment of a flat panel display inspection apparatus according to the related art.

Figure 3 is a perspective view of the inside of the flat panel display inspection apparatus according to the present invention opened

Figure 4 is a perspective view of the drive means for reciprocating in all directions in accordance with the present invention, the frame on which the light source generator and the reflector is mounted

5 is a front view showing an installation state of a pair of frames on which the light source generator and the reflector are mounted according to the present invention.

6 is a side cross-sectional view showing an installation state of a light source generator and a reflecting plate according to the present invention.

Figure 7 is a side cross-sectional view showing the internal structure of the light source generator according to the present invention

8 is a plan view showing the internal structure of the light source generator according to the present invention

Figure 9 is a side view showing the installation state of the color filter according to the present invention

10 is a side view showing an installation state of the illuminance filter according to the present invention;

Explanation of symbols on the main parts of the drawings

A: Inspection device

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat panel display inspection apparatus for visually inspecting a defect present in a flat plate by reflecting light emitted from a light source generator onto a reflecting plate and illuminating the flat plate. By varying the inspection conditions by adjusting, it is easier to find various defects on the plate, and it is also possible to horizontally move the lighting device to inspect according to the size of the plate. It relates to a flat panel display inspection device that can be.

In general, a display is an interface between an electronic device and a person, and is an information display device that converts electrical information signals output from various electronic devices into optical information signals so that humans can recognize them through vision.

There are many kinds of such displays, such as LCD, PDP, FED, ELD, and the like, and before manufacturing the finished product, visual inspection of defects such as foreign substances, stains, flatness mismatch, and scratches on the flat plate is performed.

In the conventional flat panel display inspection apparatus for inspecting defects as described above, light generated from the light source 1 is reflected by the mirror 2 to the upper Fresnel lens 3 as shown in FIGS. Reflected light reflected by the light is condensed into parallel light while passing through the upper Fresnel lens (3), and the parallel light passes through the lower Fresnel lens (4) and then contrasts the flat plate (5) located thereunder. Will be examined.

However, in recent years, the size of the flat panel display is rapidly increasing, and accordingly, the conventional inspection apparatus as shown in FIG. 2 inspects the large flat panel 5, and in this case, there is a problem that inspection is impossible except for a conventionally set area. .

In order to solve this problem, the inspection of the flat plate 5 while linearly moving the lighting device up, down, left, and right so as to enable inspection in addition to the conventionally set area, or by expanding the lighting device and moving it up and down, this is the illumination. The focus position (S) is displaced according to the movement of the device, and the operator has to find and move the focus, which is inconvenient to inspect, and when the lighting device is added and inspected, the focus position (S) is displaced during vertical movement upward and downward. The problem still had a drawback that could not be solved.

Accordingly, the present invention is to solve all the problems of the conventional inspection apparatus as described above, the object of the various defects present in the flat plate by varying the inspection conditions by selectively adjusting the color and illuminance of the light imaged on the flat plate in particular The present invention provides a flat panel display inspection device that makes it easier to find them.

Another object of the present invention is to provide a flat panel display inspection device that can ensure the convenience of the inspection by configuring to move the lighting device to be horizontally inspected according to the size of the flat plate.

Flat display inspection apparatus of the present invention for achieving this object, the frame; A light source generator installed in the frame and generating light by power supply; A reflection plate installed at one side of the light source generator and reflecting light emitted from the light source generator; Drive means for reciprocating the frame provided with the light source generator and the reflector in all directions so that the reflected light reflected by the reflector can be irradiated to the entire flat panel display which is pre-determined a predetermined distance from the frame; Between the light source generator and the reflecting plate is installed so as to be rotatable in parallel with at least two or more plates, a plurality of color filters on one side of the plate and a plurality of illumination filters that can adjust the illuminance of the light on the other plate is detachably installed. Adjusting means for varying the illuminance and color of the light to be illuminated on the flat panel display to be inspected by allowing the light irradiated from the light source to the reflector to pass through these color filters and illuminance filters; And a control panel for selectively rotating the plate body of the adjusting means by a button operation so as to match the selected filters among the color filter and the illuminance filter to adjust the color and illuminance of the light according to the inspection condition.

Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment configuration of a flat panel display inspection apparatus according to the present invention.

3 is a perspective view showing the inside of the flat display inspection apparatus according to the present invention by opening the top, Figure 4 is a perspective view showing the drive means for reciprocating the frame mounted with the light source generator and the reflector of the present invention in all directions, 5 is a front view showing an installation state of a pair of frames on which the light source generator and the reflector of the present invention are mounted, and FIG. 6 is a side cross-sectional view showing an installation state of the light source generator and the reflector of the present invention. And, Figure 7 is a side cross-sectional view showing the internal structure of the light source generator of the present invention, Figure 8 is a plan view showing the internal structure of the light source generator according to the present invention, Figure 9 shows the installation state of the color filter according to the present invention 10 is a side view, and Fig. 10 is a side view showing the installation of the illuminance filter according to the present invention.

Flat display inspection apparatus according to the present invention is provided with a storage room 10 for storing and protecting the elements necessary for the installation and replacement of the flat plate and other electrical control devices in the lower portion as usual, and practically above the storage room 10 The inspection apparatus A of the present invention for carrying out flat plate inspection is mounted.

The storage chamber 10 and the various elements accommodated therein are the same as the well-known configuration, and detailed descriptions thereof will be omitted, and the description of the flat panel display inspection apparatus A, which is the subject of the present invention, will be described in detail.

The configuration of the flat panel display inspection apparatus (A) according to the present invention comprises a frame (11) on which various elements are mounted; A light source generator 12 installed in the frame 11 and generating light by power supply; A reflection plate 13 installed at one side of the light source generator 12 and reflecting light emitted from the light source generator 12; The light source generator 12 and the reflector plate 13 are reciprocated in all directions so that the reflected light reflected by the reflector 13 can be irradiated to the entire flat panel display which is previously installed at a lower distance from the frame 11. Drive means for moving (14); Control means for selectively changing the color and illuminance according to the inspection conditions by configuring to give a color to the light generated by the light source generator 12 to be contrasted to the inspection target plate (P) and to adjust the illuminance of the light (15) ); And a control panel 16 for selectively rotating the plate body of the adjusting means 15 by the button N operation to match the selected filters of the color filter and the illuminance filter to adjust the color and illuminance of the light according to the inspection condition. );

Here, the frame 11 on which the light source generator 12, the reflector plate 13, and the adjusting means 15 are mounted is arranged in pairs, and the light irradiated from each light source generator 12 is illuminated on the flat plate P. Be sure to

As such, when the light source generator 12 and the reflector plate 13 are arranged in pairs, the irradiation area can be widened, thereby reducing the inspection time.

A pair of frames 11 are inclined to install a flat plate P at a portion where two light reflected from each reflecting plate 13 and reflected in a cone shape start to overlap as shown in FIG. By doing so, the efficiency of the inspection was increased.

The frame 11 has a plurality of unit frames are assembled into a rectangular shape as shown in Figs. 4 to 6, the light source generator 12, the adjusting means 15 and the reflecting plate 13 has an organic relationship therein. It should be installed so that the lower portion of the light source generator 12 should be formed so as to penetrate the light to be reflected on the flat plate (P).

The light source generator 12 has a conventional structure for generating light from its lamp 17 by power supply and irradiating the light to the reflector plate 13 through the plurality of lenses 18. do.

Light irradiated from the light source generator 12 having such a configuration is basically diffused light, and reflects the diffused light as parallel light in the reflecting plate 13.

The reflecting plate 13 is provided so that the front surface is inclined at one side of the light source generator 12 so that the light reflected thereon is illuminated on the flat plate P installed in the lower part, and its configuration and function are the same as those of the known reflecting plate. Description is omitted.

As described above, the reflecting plate 13 reflecting light onto the flat plate P deforms the diffused light of the light source generator 12 into a parallel light to enable inspection of the flat plate P. FIG.

The driving means 14 moves the frame 11 on which the light source generator 12, the reflecting plate 13, and the adjusting unit 15 are mounted in all directions to reflect the reflecting plate 13 according to the size of the flat plate P. FIG. It is to be able to accommodate the inspection conveniently by making the light to the entire flat plate (P).

The driving means 14 is an X-axis rail 19 is installed in the X-axis direction on the upper part of the storage chamber 10; A lower slide member 20 mounted on the X-axis rail 19 and reciprocating along the X-axis rail 19; An X-axis screw 22 engaged with the lower slide member 20 to rotate forward and reverse by driving the motor 21 to reciprocate the lower slide member 20 in the X-axis direction; A Y-axis rail 23 fixed to an upper portion of the lower slide member 20; An upper slide member 24 mounted on the Y-axis rail 23 and reciprocating along the Y-axis rail 23; And a Y-axis screw 26 fastened to the upper slide member 24 and rotating forward and reverse by driving the motor 25 to reciprocate the upper slide member 24 in the Y-axis direction. .

The driving means 14 configured as described above has the lower slide member 20 linearly reciprocating along the X-axis rail 19 by driving the motor 21 and the X-axis screw 22, and the upper slide member 24. Since the linear movement along the Y-axis rail 23 is driven by the driving of the motor 25 and the Y-axis screw 26, the frame 11 mounted on the upper slide member 24 above these upper and lower slide members (24) By 20, it becomes possible to move to X, Y-axis direction (four directions).

Therefore, the light generated by the light source generator 12 by the four-way movement of the frame 11 can be illuminated over the entire surface of the disk of different sizes to achieve the object of the present invention.

Here, the motors 25 and 21 that provide power to drive the upper and lower slide members 24 and 20 use a motor capable of forward and reverse rotation. It is preferable that the connected X and Y-axis screws 22 and 26 smoothly move the upper and lower slide members 24 and 20 by using a ball screw having a low frictional resistance.

The adjusting means 15 is installed between the light source generator 12 and the reflector plate 13 and gives a color to the light irradiated from the light source generator 12 to the reflector plate 13, and also adjusts the brightness of the flat plate ( It is to optimize the light to be illuminated on P) to the inspection condition for inspecting the defect.

The adjusting means 15 is at least two or more first and second plate bodies 27 and 28 are rotatably installed in parallel between the light source generator 12 and the reflector plate 13 and the first plate body 27. A plurality of color filters 29 are installed on the second plate 28 so that the plurality of illuminance filters 30 that can adjust the illuminance of the light are detachably installed from the light source generator 12 to the reflector plate 13. The irradiated light passes through these color filters 29 and the illuminance filter 30 so as to vary the illuminance and color of the light imaged onto the flat panel display to be inspected according to the inspection conditions.

In more detail, the adjustment means 15, the shaft (S1) rotatably installed in a position adjacent to the light outlet of the light source generator (12); A first plate body (27) in which a disc-shaped body center is assembled to the shaft (S1); A color filter 29 having a different color and detachably assembled to the first plate body 27 to impart various colors to light to be illuminated on the flat plate P; A second plate body 28 in which a disc-shaped body center is assembled to the shaft S1 and arranged in parallel on one side of the first plate body 27; An illuminance filter 30 having a plurality of different degrees of contrast to adjust the intensity of the light irradiated from the light source generator 12 differently and detachably assembled to the second plate 28; And a drive gear 32 that rotates by driving the motor 31 to rotate the first and second plate bodies 27 and 28.

The first plate body 27 has teeth formed so as to engage with the driving gear 32 at the periphery of the body to rotate, and a plurality of receiving grooves 33 penetrate radially through the body around the shaft S1. On both sides of the receiving groove 33, a fastening hole 34 for fastening and fixing the color filter 29 to the bolt is formed.

The number of the receiving grooves 33 is determined according to the number of the color filters 29, four in the figure is penetrated, the shape is formed in a rectangular shape.

The color filter 29 imparts a color to light to be contrasted to the flat plate P so that defects existing in the flat plate P can be easily found according to conditions.

In other words, the defects in the plate are easily exposed to a certain color, so that the number of possible defects can be predicted, and light can be easily inspected by giving a color to which these defects can be easily exposed. will be.

For example, the presence in the flat plate P is used by fastening and fixing the red color filter 29 to the receiving groove 33 of the first plate 27 if the foreign matter becomes easy to red, and yellow if the stain is easily exposed to yellow. If the color filter 29 is used and scratches are easily exposed to the blue color, the blue color filter 29 is used to easily check for defects.

Therefore, according to this principle, the color filter 29 is determined according to the kind of defects, and it is good to use a lot of colors to detect unexpected defects, but there is a concern that it may cause confusion in inspection by using too many colors. It is preferable to use 4 to 6 kinds of colors.

The second plate body 28 is formed with a tooth so as to engage with the drive gear 32 at the periphery of the body like the first plate body 27 so as to rotate and have a roughness filter 30 around the shaft S1. A plurality of receiving grooves 35 are radially penetrated so as to be detachably fixed), and fastening holes 36 are formed at both sides of the receiving grooves 35 to fasten and fix the illuminance filter 30 to a bowl. do.

The accommodating groove 35 of the second plate body 28 is formed to correspond to the accommodating groove 33 of the first plate body 27 so that light irradiated from the light source generator 12 to the reflector plate 13 is color filter 29. ) And the illuminance filter 30 can be transmitted together.

The illuminance filter 30 cooperates with the color filter 29 to make it easier to find defects. The illuminance filter 30 determines the illuminance of the light to be illuminated on the plate according to the degree of blocking the light irradiated from the light source generator 12 to the reflector plate 13.

Therefore, the degree of light blocking is determined by the difference in contrast, and as the light blocking amount increases, the illuminance of light is low, and the light blocking amount is high, so the illuminance is high, thus preparing a plurality of illuminance filters 30 and preparing the prepared illuminance filter 30. By setting the degree of light blocking step by step, these illumination filters 30 are sequentially assembled to the receiving groove 35 of the second plate body 28 to rotate the brightness of the light to be illuminated on the plate can be adjusted. .

The illuminance filter 30 is detachably assembled by a bolt in the receiving groove 35 of the second plate body 28 so as to correspond to the color filter 29. Experiments will determine the conditions under which roughness can be adjusted to find the defects most easily.

The drive gear 32 is connected to the shaft of the motor 31 and meshed with the gears of the first and second plate bodies 27 and 28, and driven by the power of the motor 31 to drive the first and second plate bodies. (27) (28) to rotate. As described above, when the first and second plates 27 and 28 are rotated using the driving gear 32, the color filter 29 and the illuminance filter 30 to be used are connected to the light outlet of the light source generator 12. Because they can be matched, you can selectively adjust color and illuminance.

The control panel 16 selects the color filter 29 and the illuminance filter 30 according to the inspection conditions by operating the button N, and the filter 30 controls the illumination of the light on the flat plate P. Since the color and illuminance are set, the detailed description thereof is omitted as in the conventional control system.

Next, a process of inspecting a flat panel display using the flat panel display inspecting apparatus A according to the present invention configured as described above will be described.

First, when the inspection device A of the present invention is turned on by operating the button N of the control panel 16 in a state where the flat plate P to be inspected is positioned at a designated place under the frame 11, the light source generator 12 ) Is driven to irradiate the light generated by the reflector plate 13, the reflector plate 13 reflects the light to the plate (P), at this time the inspector is flat plate by the light reflected on the plate (P) The defect of (P) is examined.

The light reflected by the flat plate P is transmitted through the color filter 29 and the illuminance filter 30 installed in the first and second plate bodies 27 and 28 of the adjusting means 15, so that the color filter 29 At the same time the brightness of the filter is determined by the illumination filter 30.

Here, the adjustment means 15 is driven by the motor 31 to rotate the first and second plate body 27, 28 so that the color filter 29 and the illuminance filter 30 is rotated in sequence so that each of these The color filters 29 and the illuminance filters 30 transmit the light irradiated from the light source generator 12 so as to vary the condition of the light illuminated on the flat plate P, thereby optimizing the inspection conditions to exist in the flat plate P. Several defects will be investigated.

At this time, the flat plate (P) to be examined may be different in size, and when the large flat plate is the inspection target, the flat plate is moved by moving the upper and lower slide members 24 and 20 of the driving means 14 in the X and Y directions. (P) Visually inspect the whole.

In the method of inspecting the flat plate in this way, the first and second plate bodies 27 and 28 may be selectively rotated to correspond various illumination filters 30 to a specific color filter 29. For example, when the color filter 29 is red, inspection conditions can be variously set by rotating the second plate body 28 to correspond to a specific illuminance filter 30 by rotating the second plate body 28 to the red color filter 29. .

The inspection apparatus of the present invention configured as described above has an advantage that the inspection can be performed more easily and simply by optimizing the inspection conditions of the defects by giving color to the light imaged on the plate and selectively setting the brightness.

In addition, the inspection apparatus of the present invention has the advantage of increasing the inspection efficiency by varying the entire area of the light of different sizes by varying the area of light irradiated to the plate by the drive means.

Claims (5)

(Correction) A light source generator for generating light by power supply is installed on the frame, a reflector plate for reflecting light emitted from the light source generator is installed on one side of the light source generator, the reflecting light reflected from the reflector plate is installed on the lower part of the frame The driving means reciprocates the frame provided with the light source generator and the reflector in all directions so that the entire display can be irradiated, and the light irradiated from the light source generator to the reflector passes through the color filter and the illuminance filter of the adjusting means. The illuminance and color of the light to be displayed on the display are varied according to the inspection conditions, and by operating the buttons on the control panel, the plate body of the adjusting means is selectively rotated to match the selected filters of the color filter and the illumination filter according to the inspection conditions. To the flat panel display inspection device that controls the color and illuminance of the light. Come on. The driving means An X-axis rail installed in the X-axis direction above the storage room; A lower slide member mounted on the X-axis rail and reciprocating along the X-axis rail; An X-axis screw fastened to the lower slide member to rotate forward and reverse by driving a motor to reciprocate the lower slide member in the X-axis direction; A Y-axis rail fixed to the lower slide member; An upper slide member mounted on the Y-axis rail and reciprocating along the Y-axis rail; And And a Y-axis screw fastened to the upper slide member and configured to rotate forward and backward by driving a motor to reciprocate the upper slide member in the Y-axis direction. The adjusting means A shaft rotatably installed at a position adjacent to the light outlet of the light source generator; A first plate body in which a disc-shaped body central part is assembled to the shaft, and a tooth is formed in the periphery of the body, and a plurality of receiving grooves radially penetrate the body around the shaft; A plurality of color filters having different colors detachably assembled to respective receiving grooves of the first plate body; A second plate body in which a disk-shaped body center is assembled to the shaft and disposed in parallel on one side of the first plate body, wherein a tooth is formed at the periphery of the body, and a plurality of receiving grooves radially penetrate the body around the shaft; An illuminance filter having a plurality of different degrees of contrast to adjust the intensity of light irradiated from the light source generator and detachably assembled to a receiving groove of the second plate body; And And a drive gear which rotates by driving of the motor and is engaged with the teeth of the first and second plate bodies to rotate the first and second plate bodies. delete delete delete The flat panel display inspection apparatus according to claim 1, wherein the color filter and the illuminance filter assembled on the first and second plate bodies are disposed correspondingly.

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