KR200175776Y1 - Apparatus for testing a state of sealing of sealant for lcd - Google Patents

Abstract

The present invention discloses an encapsulation state inspection apparatus for an encapsulant for a liquid crystal display device. In the disclosed subject matter, a table 4 is horizontally moved by driving the motor 41 on the mounting plate 3 on which the liquid crystal panel L is placed. The solid-state image pickup device camera 7 is connected to the table 4 so as to be movable up and down and left and right through the vertical and horizontal micrometers 4 and 5. A zoom lens 8 is provided at the lower end of the solid state image pickup device camera 7 for enlarging the liquid crystal injection hole portion of the liquid crystal panel L, and the zoom lens 8 is automatically magnified by the motors 81 and 82. Adjusted. The screen shot by the solid-state imaging device camera 7 is enlarged and displayed on the computer 9, and it is possible to measure the thickness of the encapsulant up to 0.1 mm in the computer 9.

Description

Encapsulation state inspection device of encapsulant for liquid crystal display elements

The present invention relates to a device for checking a state of encapsulation of an encapsulant for a liquid crystal display device (LCD: hereinafter referred to as English), and more particularly, after the liquid crystal is injected into an LCD panel, The present invention relates to an apparatus for inspecting the encapsulation state of an encapsulant.

In general, in manufacturing a liquid crystal panel used for manufacturing a liquid crystal display device, a rubbing treatment is performed by applying a polymer organic alignment film between electrodes, which are transparent conductive films attached to inner surfaces of upper and lower glass substrates. Subsequently, a thermosetting sealing compound mixed with spacers is printed on the lower glass substrate, the upper and lower glass substrates are bonded, and then thermally cured so that the upper and lower glass substrates are maintained at a predetermined interval (7 to 10 μm).

As a method of injecting liquid crystal into the liquid crystal panel configured as described above, there are a yarn method using a fiber material, a boat method, and a dip method.

In the yarn method, a yarn of fiber material is immersed in the liquid crystal to inhale a sufficient amount of liquid crystal, and then the yarn is placed in the long groove provided in the boat, and then the boat is placed close to the liquid crystal injection hole formed in the liquid crystal panel. The liquid crystal is injected into the liquid crystal panel by the suction force generated by the vacuum pressure and the capillary phenomenon.

On the other hand, the boat method is a method in which the liquid crystal is poured directly into the liquid crystal injection hole without using a yarn, and the dip method is a method of dipping and injecting the liquid crystal injection hole into a tray full of liquid crystal.

Therefore, a liquid crystal injection hole for injecting liquid crystal should be formed in the liquid crystal panel, and the position thereof is shown in FIG. 1.

As illustrated, two liquid crystal injection holes L1 and L2 are formed at one side of the liquid crystal panel L. After injecting the liquid crystal through each of the liquid crystal injection holes (L1, L2), the liquid crystal injection holes (L1, L2) are sealed with an encapsulant to prevent the leakage of the liquid crystal, the sealed state is shown in detail the part II of FIG. 2 is shown. As illustrated, an encapsulant S having a thickness of about 0.1 to 0.8 mm is coated on the outer surface of the liquid crystal injection hole L2.

Since the leakage of the liquid crystal can be prevented only when the thickness of the encapsulant S is kept within the thickness range, the process of inspecting the encapsulation state must be performed after the encapsulant S is applied. In addition, since the sealing state of the sealing agent S apply | coated to each liquid crystal injection port L1, L2 differs, you should test each individually.

In the related art, an operator visually inspected a microscope at each liquid crystal injection hole L1 and L2, and manually operated a table for moving the microscope to an inspection position, that is, a microscope to an upper position of the liquid crystal panel.

However, the conventional inspection method described above has the following problems.

First, since the operator had to adjust the lens magnification of the microscope with his left hand while moving the table with his right hand, the fatigue of the worker was quite high. In particular, the operator has to see a very thin encapsulant (S) that is only about 0.1 to 0.8 mm in thickness for a long time through the microscope, there was a problem that the eye fatigue is increased.

In addition, there is a problem in that too much inspection time is required because it is a method by manual operation.

Therefore, the present invention has been devised to solve the problems caused by the inspection method of the conventional encapsulation state, and it is possible to automatically move the table and adjust the lens magnification to reduce the fatigue of the operator, especially to the enlarged screen It is an object of the present invention to provide an encapsulation state inspection apparatus of an encapsulant for a liquid crystal display device that can reduce the eye fatigue and also reduce the inspection time.

1 is a view showing a position of a liquid crystal injection hole formed in a general liquid crystal display device

FIG. 2 is a detailed view of the II site of FIG. 1

Figure 3 is a front view showing an apparatus for checking the state of encapsulation according to the present invention

4 and 5 are a plan view and a left side view of FIG. 3 showing an enlarged main part of the present invention.

6 is an enlarged perspective view of a motor-driven zoom lens that is an essential part of the present invention;

-Explanation of symbols for the main parts of the drawing-

1-Body Frame 2-Cassette

3-Settlement 4-Table

5-Longitudinal Micrometer 6-Lateral Micrometer

7-Solid State Camera 8-Zoom Lens

9-Computer 41-Table Motor

42-Ball screw 81,82-Motor for lenses

83,84-Gear 85,86-Knobs

In order to achieve the above object, the present invention has the following configuration.

A mounting plate on which the liquid crystal panel is placed is provided in the main frame, and a table is horizontally movable on the main frame located above the mounting plate. The table is horizontally moved by driving the motor, and the ball screw is connected to the shaft of the motor, and the table is screwed to the ball screw, so that the table can be moved to a desired position by the rotation of the ball screw. At least one table (CCD) camera is installed in the table corresponding to the number of liquid crystal injection holes of the liquid crystal panel. In particular, the solid-state imaging device camera is connected to the table via vertical and horizontal micrometers, and is finely moved up, down, left and right by adjusting each micrometer. A zoom lens is installed below the solid state image pickup device. The magnification of the zoom lens is not operated manually, but the magnification is operated by motor driving. On the other hand, a solid-state imaging device camera is connected to a computer that controls a motor driving of a zoom lens, enlarges the captured image, displays it on a monitor, and measures a thickness of the encapsulant.

According to the above-described configuration of the present invention, the table and the zoom lens are automatically moved by the motor drive, and in particular, the operator can measure the thickness of the encapsulant while the operator views the enlarged image through the monitor. Fatigue can be reduced and inspection time can also be shortened.

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

Figure 3 is a front view showing the state inspection device of the encapsulation agent according to the present invention, Figures 4 and 5 are a plan view and a left side view of Figure 3 showing an enlarged main part of the present invention, Figure 6 is the main of the present invention A perspective view showing an enlarged denial motor-driven zoom lens.

As shown in FIG. 3, the facilities according to the present invention are provided on the right side of the main frame 1. That is, the cassette 2 in which the plurality of liquid crystal panels L is stacked up and down is provided on the uppermost right side surface of the main frame 1. The mounting plate 3 on which the liquid crystal panel L on which the sealing state is to be enclosed is placed is placed on the upper left side of the main frame 1. Although the mounting plate 3 may be fixed in a fixed position, it may be connected to the robot which can rotate up and down and left and right like this embodiment.

The table 4 is installed on the main body frame 1 located above the base plate 3 so as to be movable horizontally. The table 4 is screwed to the ball screw 42 connected to the shaft of the motor 41, as shown in FIGS. 4 and 5, such that the ball screw 42 is rotated so that the ball screw 42 is rotated. Is moved left and right along the axial direction.

Two solid-state image pickup cameras 7 for photographing the encapsulant of the liquid crystal panel L are provided on the table 4 as shown in Figs. Since two liquid crystal injection holes are normally formed in the liquid crystal panel L, two solid state image pickup cameras 7 are also provided to simultaneously photograph each of them. Therefore, when the liquid crystal injection port is one or three or more, the solid-state imaging device camera 7 may also be provided at a corresponding number and interval.

In addition, each solid-state imaging device camera 7 is not immovably fixed to the table 4, but is connected via the vertical and horizontal micrometers 5 and 6. That is, each solid-state imaging device camera 7 can be finely moved by the operation of the vertical and horizontal micrometers 5 and 6.

A zoom lens 8 for enlarging an image near the encapsulant of the liquid crystal panel L is provided at the lower end of each solid state image pickup camera 7. In other words, the zoom lens 8 is provided in the solid state image pickup camera 7 as in a conventional camera. However, the zoom lens 8 of the present invention is not operated manually but is operated automatically by a motor drive.

That is, as shown in FIG. 6, the zoom lens 8 is provided with two or more knobs 85 and 86 for adjusting the magnification, and the knobs 85 and 86 are rotated by the motors 81 and 82. It is rotated automatically by driving. That is, gears 83 and 84 are mounted on the shafts of the motors 81 and 82, and knobs 85 and 86 are engaged with the gears 83 and 84.

On the other hand, the solid-state image pickup device camera 7 is connected to a computer 9 including a monitor that enlarges the captured image. The computer 9 is input with a program that can measure the thickness of the encapsulant up to 0.1 mm by mouse operation on the photographed screen. In addition, the drive of the motors 81 and 82 for the zoom lens 8 can be controlled by the computer 9.

Hereinafter, the operation of this embodiment configured as described above will be described in detail.

When the liquid crystal panel L stacked on the cassette 2 is placed on the mounting plate 3, the table motor 41 is driven to seal the solid state image pickup device camera 7 with the sealing agent of the liquid crystal panel L. Move to nearby upper position. Then, the vertical and horizontal micrometers 5 and 6 are operated to bring the zoom lens 8 close to and placed on the encapsulant.

Then, the operator operates the keyboard in front of the computer 9 to drive the zoom lens motors 81 and 82 so that the encapsulant is at the magnification at which the encapsulation is most clearly captured. That is, when the respective motors 81 and 82 are driven, the rotational force is transmitted to the knobs 85 and 86 via the gears 83 and 84, whereby the magnification of the zoom lens 8 can be adjusted optimally.

The screen shot by the zoom lens 8 of the optimum magnification is displayed on the monitor of the computer 9 at a predetermined magnification. The operator can easily measure the thickness of the encapsulant by operating a mouse while looking at the enlarged screen.

As described above, according to the present invention, the operator can easily measure the thickness of the encapsulant only by operating the computer 9, and in particular, the encapsulant portion can be enlarged and viewed, thereby reducing the eye fatigue of the operator. Therefore, the time which examines the sealing state of sealing agent can also be shortened significantly.

On the other hand, the present invention is not limited to the above-described specific preferred embodiments, anyone of ordinary skill in the art to which the present invention pertains without departing from the gist of the present invention claimed in the claims may be variously modified. will be.

Claims (1)

Body frame; A mounting plate installed in the main body frame and having a liquid crystal panel placed therein; A table mounted horizontally on the main frame of the upper plate; A solid-state imaging device camera connected to the table so as to be movable up, down, left, and right and corresponding to the number and interval of liquid crystal injection holes of the liquid crystal panel; Vertical and horizontal micrometers disposed between the commercial solid state imaging device camera and the table to finely move the solid state imaging device camera vertically and horizontally; A zoom lens installed at a lower end of the solid state image pickup device camera to enlarge a liquid crystal injection hole at a predetermined magnification; And a computer on which a screen shot by the solid-state imaging device camera is enlarged and displayed, and a program for measuring a thickness of an encapsulant encapsulated in a liquid crystal injection hole is input. The table is screwed to the ball screw, the ball screw is connected to the motor for the table, the table is moved horizontally along the axial direction of the rotating ball screw, A motor for automatically operating knobs for adjusting the magnification is installed in the zoom lens, a gear mounted to the shaft of the lens motor is engaged with the knob, and the motor for the lens is controlled by the operation of the computer. Sealing state inspection apparatus of the sealing agent for a liquid crystal display element characterized in that.