JP3108312B2 - How to clean LCD panel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a liquid crystal display panel (hereinafter, referred to as a liquid crystal display panel).
More specifically, the present invention relates to a method for cleaning an LCD panel, which can respond immediately to a change in the size of an LCD panel, stabilize quality by uniform processing, and reduce material loss.

[0002]

2. Description of the Related Art Conventionally, various proposals have been made regarding a liquid crystal unit manufacturing process, particularly a method of cleaning an LCD panel before attaching a polarizing plate. FIG. 4 is a schematic view showing a conventional LCD panel cleaning method. As shown in FIG. 4, when the LCD panel 22 is transported by the transport belt 21 to a position to be cleaned, the cylinder 23 lowers the metal blade 24 until the metal blade 24 contacts the LCD panel 22. continue,
The metal blade 24 removes foreign substances adhering to the surface of the LCD panel 22 while moving straight (in a speed higher than the transport speed of the LCD panel) in the same direction as the transport direction of the LCD panel 22, and cleans the surface of the LCD panel 22. to clean. After the cleaning, the cylinder 23 raises the metal blade 24 to release the contact with the LCD panel 22. When the metal blade 24 returns to the initial operation position, the next LCD panel 22 is cleaned.

[0003]

However, in the conventional LCD panel cleaning method, every time the size of the LCD panel is changed, it is necessary to prepare a metal blade having a width corresponding to the size and a dedicated jig. There is a problem.
Further, in the conventional method of cleaning an LCD panel, only the fixed metal blade is moved straight in a predetermined direction with respect to the LCD panel to perform cleaning, and a directional foreign matter adhered to the surface of the LCD panel. There is a problem that it is difficult to sufficiently remove the

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and it is possible to clean an LCD panel with a metal blade having the same dimensions regardless of the size of the LCD panel, and to adhere to the surface of the LCD panel. It is an object of the present invention to provide a method of cleaning an LCD panel that can reliably remove and clean any foreign matter.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a method of forming an LC with a metal blade.
In a method of cleaning an LCD panel for cleaning a surface of a D panel, a metal blade of a cleaning unit including at least one revolvable metal blade and driving means for applying a revolving driving force to the metal blade is provided on a surface of the LCD panel. , The metal blade is revolved by the driving means, the stage on which the LCD panel is mounted is moved by the stage moving means, and the metal blade is moved in a direction substantially perpendicular to the stage moving direction by the cleaning unit. The present invention relates to a method for cleaning an LCD panel, comprising moving the LCD panel on a surface of the LCD panel by means.

[0006]

According to the present invention, the metal blade is driven by the driving means by LC.
Since the revolving motion is performed on the surface of the D panel and a linear motion is also added by the stage moving means and the cleaning unit moving means, cleaning is performed at an arbitrary position from different directions. In addition, the stage on which the LCD panel is mounted moves with respect to the revolving metal blade, and the cleaning unit also moves in a direction substantially perpendicular to the moving direction. Cleaned without change.

[0007]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a schematic front view of a cleaning device used in the method of cleaning an LCD panel according to the present invention, and FIG. 2 is a left side view of the cleaning device of FIG. As shown in FIGS. 1 and 2, the cleaning device used in the method of cleaning an LCD panel according to the present invention includes two revolvable metal blades 4 and a speed control for applying a revolving driving force to the metal blades 4. A cleaning unit 13 having a motor 5; a cylinder 3 for moving the cleaning unit 13 up and down;
And a pulse motor 6 for moving the motor in the lateral direction. Transmission of the revolution driving force from the speed control motor 5 to the metal blade 4 is performed as shown in FIG. That is, the rotation of the speed control motor 5 is transmitted to the metal blade 4 fixed to the tip of the cleaning unit 13 via the gear engaging portions 11 and 12, and the metal blade 4 performs a revolving operation.

Next, a method of cleaning an LCD panel according to the present invention using the cleaning device having the above-described configuration will be described with reference to the drawings. First, the cleaning unit moving pulse motor 6 is operated to move the cleaning unit 13 having the revolving metal blade 4 at the tip in the Y direction in FIG. 1, and the cleaning unit 13 is mounted on the LCD panel on the stage 2. When the pulse motor 6 reaches above one end, the pulse motor 6 is stopped. Then, the cleaning unit 13 is lowered by the cylinder 3 with respect to the LCD panel 1, and when the metal blade 4 at the tip thereof contacts one end of the LCD panel 1, the speed control motor 5 is operated to operate the metal blade 4. Start orbital motion. In this embodiment, the angle of the cutting edge of the metal blade 4 is set to 40 ° with respect to the surface of the LCD panel 1, and the rotation speed of the speed control motor 5 is set to LC
It is set so that the same location on the surface of the D panel 1 is cleaned at least twice.

Next, the stage-moving pulse motor 10 is operated in a state where the revolving metal blade 4 is in contact with the LCD panel 1 and its position is fixed. Move stage 2. That is,
By moving the stage 2 in a direction parallel to the sides of the LCD panel 1, the revolving metal blade 4 can clean the surface of the LCD panel 1. Subsequently, when the metal blade 4 relatively reaches the other end (edge) of the LCD panel 1, the pulse motor 10 is stopped, and the pulse motor 6 is operated instead to move the cleaning unit 13 to the above-mentioned stage moving direction. It is moved in a substantially perpendicular direction, that is, in the Y direction in FIG.

When the metal blade 4 reaches the other end of the LCD panel 1, the pulse motor 6 is stopped and the pulse motor 10 is operated to move the stage 2 in a direction substantially perpendicular to the cleaning unit moving direction. That is, FIG.
In the direction opposite to the X direction. Finally, the metal blade 4 is L
When reaching the remaining end of the CD panel 1, the pulse motor 10 is stopped and the pulse motor 6 is operated to move the cleaning unit 13 in a direction substantially perpendicular to the stage moving direction, that is, in a direction opposite to the Y direction in FIG. Move to
As a result, the metal blade 4 returns to the end of the starting point,
The cleaning of the entire surface of the panel 1 is completed. In addition, you may employ | adopt the cleaning process of reverse rotation with respect to the above-mentioned cleaning process.

After the cleaning, the speed control motor 5 is turned off, and the revolving operation of the metal blade 4 stops.
Then, the cleaning unit 13 is raised by the cylinder 3 to release the contact between the metal blade 4 and the LCD panel 1, and a series of cleaning operations is completed. In order to keep the cutting edge of the metal blade 4 in an optimum state, the metal blade 4 is
The roller 3 is moved to the position of the roller brush 7 by the cylinder 3 and is cleaned by the rotation of the roller brush 7.

[0012]

According to the present invention, the metal blade is revolved on the surface of the LCD panel by the driving means, and the linear movement is also added by the stage moving means and the cleaning unit moving means, so that the metal blade can be moved in different directions at arbitrary positions. , And the directional attached foreign matter can be easily removed. Therefore, the quality can be stabilized and the material loss can be reduced by the uniform processing. Also, even if the size of the LCD panel is changed by moving the stage on which the LCD panel is mounted with respect to the revolving metal blade and further moving the cleaning unit in a direction substantially perpendicular to the moving direction. It can be dealt with only by changing the position data of the stage, and it is not necessary to replace the dedicated jig and the metal blade.

[Brief description of the drawings]

FIG. 1 is a schematic front view of a cleaning device used in a method of cleaning an LCD panel according to the present invention.

FIG. 2 is a left side view of the cleaning device of FIG. 1;

FIG. 3 is a schematic configuration diagram of a cleaning unit shown in FIG. 2;

FIG. 4 is an explanatory view showing a conventional method of cleaning an LCD panel.

[Explanation of symbols]

 Reference Signs List 1 LCD panel 2 Stage 3 Cylinder 4 Metal blade 5 Speed control motor 6 Pulse motor 10 Pulse motor 13 Cleaning unit

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G02F 1/13 101 B08B 1/00 G02F 1/1333 500

Claims (1)

(57) [Claims] An LCD panel cleaning method for cleaning the surface of an LCD panel with a metal blade, the cleaning unit comprising: at least one revolvable metal blade; and driving means for applying a revolving driving force to the metal blade. The metal blade is brought into contact with the surface of the LCD panel, the metal blade is revolved by the driving means, and the stage on which the LCD panel is mounted is moved by the stage moving means, and further in a direction substantially perpendicular to the stage moving direction. And moving the metal blade on the surface of the LCD panel by a cleaning unit moving means.