JP2000015188A - Washer for liquid crystal displaying panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a washer for a liquid crystal displaying panel which washer is of a space saving and low cost type. SOLUTION: A liquid crystal displaying panel fed to a table 8 is sucked and fixed on the table 8. A cullet removing unit 9 for a surface fitted with plural knives 10 descends to the surface of the liquid crystal displaying panel to start the removal of cullet stuck on the liquid crystal panel. The cullet removing unit 9 for a surface is provided with a brush 11 driven by a belt to advance while rotating and a shower 12 for jetting pure water to the brush 11. Immediately after the removal of the cullet by the knives 10, the removal of soil on a terminal part and a displaying part of the liquid crystal displaying panel is performed. When washing of the surface of the liquid crystal displaying panel has been completed, the sucked fixing of the liquid crystal displaying panel to the table 8 is released and thrust-up pins 20 are raised to deliver the liquid crystal displaying panel to the table 13 of the cullet removing unit 9 for a surface. The liquid crystal displaying panel that has been delivered to the table 13 is sucked and fixed on the table 13 to perform the washing of the back surface like the surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a cleaning apparatus for a liquid crystal display panel, and more particularly to a cleaning apparatus for a liquid crystal display panel used for cleaning before attaching a polarizing plate to the liquid crystal display panel.

[0002]

2. Description of the Related Art Liquid crystal display panels have been provided as display elements utilizing the electro-optic effect of liquid crystal for television images. For example, the liquid crystal display panel includes a large number of pixel electrodes arranged in a matrix and a liquid crystal layer that modulates light according to a voltage applied thereto.

[0003] As a method of manufacturing a liquid crystal display panel, for example, after a color filter side substrate and a TFT side substrate are aligned and bonded to each other, the substrate is cut into a predetermined size, and liquid crystal injection, injection port sealing, and short ring sealing are performed. A method of chamfering or the like is generally used. Thereafter, a polarizing plate is attached in a mounting process, an LSI and a circuit board are mounted, and a backlight and a chassis are assembled to complete a liquid crystal module.

In the manufacturing process of a liquid crystal display panel, cleaning is performed in each process, and a main method of cleaning includes batch processing or brush cleaning. In recent years, a brush cleaning device has been used because dirt attached to the surface of a liquid crystal display panel can be efficiently removed.

In the process of manufacturing a liquid crystal display panel, when a polarizing plate is attached, if the polarizing plate is attached while foreign matter is attached to the display screen, the foreign matter becomes bubbles and adversely affects display quality. Foreign matter must be removed. The foreign matter adheres to both front and back surfaces of the liquid crystal display panel.

[0006] As a liquid crystal display panel cleaning device for removing foreign substances adhering to both front and back surfaces of a liquid crystal display panel, a liquid crystal display panel holding table is used for a front surface and a rear surface.
A liquid crystal that is provided separately and slides on a liquid crystal display panel that has been fixed to the front table by sliding a blade to remove foreign matter, is turned upside down, is supplied to the back table, and is fixed to the back table. By removing foreign matter by sliding a blade on the display panel, foreign matter adhering to the front and back surfaces of the liquid crystal display panel is removed.

[0007] Then, the liquid crystal display panel is conveyed to a brush cleaning device by a conveyor, and stains on the terminal portion and the display portion are removed by brush cleaning.

[0008]

However, the above-described liquid crystal display panel cleaning apparatus requires two tables for the front and rear surfaces and a mechanism for turning the liquid crystal display panel upside down. A large area is required for the installation space.

Further, since a brush cleaning device for removing stains on the terminal portion and the display portion is separately installed for cleaning, a large area is required for the installation space of the cleaning device, and the equipment cost is increased. The cost of the liquid crystal display panel increases.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and has as its object to provide a space-saving and low-cost cleaning apparatus for a liquid crystal display panel.

[0011]

According to a first aspect of the present invention, there is provided an apparatus for cleaning a liquid crystal display panel, comprising the steps of: First suction fixing means for suction-fixing the second surface of the display panel, and second suction-fixing means for suction-fixing the first surface of the liquid crystal display panel when cleaning the second surface of the liquid crystal display panel. Suction fixing means, first cleaning means for cleaning a first surface of the liquid crystal display panel, and second cleaning means for cleaning the liquid crystal display panel.
A second cleaning means for cleaning the surface of the liquid crystal display panel, a first unit in which the first suction fixing means and the second cleaning means are integrally formed, It is characterized by comprising a second unit in which the second suction fixing means and the first cleaning means are integrally formed.

According to a second aspect of the present invention, in the cleaning apparatus for a liquid crystal display panel according to the first aspect, the first and second cleaning means comprise a blade and a brush. .

According to a third aspect of the present invention, in the cleaning apparatus for a liquid crystal display panel according to the first or second aspect, the first and second suction fixing means are provided on the liquid crystal display panel. It is characterized in that a conductive rubber is attached to a contacting part.

According to the liquid crystal display panel cleaning apparatus of the present invention, the first unit in which the first suction and fixing means and the second cleaning means are integrally formed, the second suction and fixing means, and the second suction and fixing means. And a second unit integrally formed with the first cleaning means. After the liquid crystal display panel is fixed by the first unit and the liquid crystal display panel is cleaned by the second unit, At almost the same place, the liquid crystal display panel can be fixed by the second unit and the liquid crystal display panel can be cleaned by the first unit. Therefore, the size of the cleaning device can be significantly reduced.

Further, since the first and second cleaning means are composed of a blade and a brush, foreign matter and dirt adhering to the liquid crystal display panel can be continuously removed by one cleaning device. Conventionally necessary two cleaning devices can be reduced to one without increasing the size.

Further, the first and second suction fixing means include:
Since the conductive rubber is attached to a portion in contact with the liquid crystal display panel, it is possible to prevent static electricity and prevent the liquid crystal display panel from being damaged.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an explanatory view showing a cleaning device for a liquid crystal display panel according to an embodiment.
2A is a plan view, FIG. 1B is a side view, FIG. 2 is an explanatory view showing a cullet removing unit, FIG. 2A is a plan view, and FIG. 2B is a side view.

First, representative foreign substances adhering to the liquid crystal display panel will be described. For example, after a color filter side substrate and a TFT side substrate are aligned and bonded to each other, the liquid crystal display panel is cut into a predetermined size, and liquid crystal injection, injection port sealing, short ring chamfering, and the like are performed. Glass powder of various shapes (hereinafter referred to as cullet) often adheres. When the flat portion of the cullet and the liquid crystal display panel are in close contact with each other, the contact surface is in a vacuum state. It sticks and cannot be easily removed.

As shown in FIGS. 1 and 2, the liquid crystal display panels 1 are sequentially taken out one by one to a predetermined position from a take-out cassette 4 set in the stocker 3 by a take-out arm 5.

The liquid crystal display panel 1 taken out of the take-out cassette 4 is supplied to the supply arm 6 installed above the take-out arm 5 by a push-up pin (not shown) from the take-out arm 5 and is attracted to the supply arm 6. It is fixed and transported to a position above the table 8 of the back cullet removing unit 7.

Then, push up the pin 2 from the table 8 surface.
0 rises to receive the liquid crystal display panel 1, the push-up pins 20 move down, and the liquid crystal is placed on the table 8 on which the conductive rubber 2 is attached to prevent static electricity and the table 8 from damaging the liquid crystal display panel 1. A display panel 1 is provided.

Liquid crystal display panel 1 supplied to table 8
The liquid crystal display panel 1 has a front cullet removing unit 9 to which a plurality of blades 10 mounted above the back cullet removing unit 7 are fixed by suction on a table 8.
To start removing the cullet adhering to the liquid crystal display panel 1.

The front cullet removing unit 9 has a spring mechanism (not shown) for preventing a shock when the cullet removing unit 9 comes into contact with the liquid crystal display panel 1. Further, in order to remove the cullet on the surface of the liquid crystal display panel 1, the surface cullet removing unit 9 performs a linear operation by driving a motor (not shown) so that the blade 10 slides on the liquid crystal display panel 1 to remove the cullet. ing.

The brush 1 which is driven by a belt (not shown) and advances while rotating is provided on the surface cullet unit 9.
1. A shower 12 for spraying pure water on a brush 11 is provided, and immediately after the cullet is removed by the blade 10, dirt is removed from a terminal portion and a display portion of the liquid crystal display panel 1.

When the front cullet removing unit 9 completes the movement of the entire surface of the liquid crystal display panel 1, the liquid crystal display panel 1 is released from being fixed to the table 8 by suction, and the push-up pins 20 are lifted up. Is transferred to the table 13 of the front cullet removing unit 9.

The liquid crystal display panel 1 delivered to the table 13 is fixed by suction to the table 13, and the back cullet removing unit 7 to which a plurality of blades 14 below the front cullet removing unit 9 are attached is attached. The liquid crystal display panel 1 ascends to the back surface and starts removing cullet adhering to the liquid crystal display panel 1.

The back cullet removing unit 7 has a spring mechanism (not shown) in order to prevent an impact when coming into contact with the liquid crystal display panel 1. Further, in order to remove the cullet on the back surface of the liquid crystal display panel 1, the back cullet removing unit 7 performs a linear operation in a direction opposite to that of the front cullet removing unit 9 by driving a motor (not shown), and the blade 14 is moved to the liquid crystal display panel. The cullet is removed by sliding to 1.

The back side cullet removing unit 7 is provided with a brush 15 driven by a belt (not shown) and moving forward while rotating, and a shower 16 for spraying pure water on the brush 15. Then, the terminal portion and the display portion of the liquid crystal display panel 1 are cleaned.

When cleaning of the front and rear surfaces of the liquid crystal display panel 1 is completed, the front cullet removing unit 9 moves to above the panel storage arm 17, and a push-up pin (not shown) rises from the storage arm 17 to raise the liquid crystal display panel 1. Is received, the liquid crystal display panels 1 are stored one by one in the storage cassette 19 set in the out stocker 18, and the washing is completed.

Here, the back cullet removing unit 7 and the front cullet removing unit 9 will be described in more detail.

The back cullet removing unit 7 and the front cullet removing unit 9 are composed of a cleaning section for cleaning the liquid crystal display panel 1, and tables 8 and 13 for adsorbing and fixing the liquid crystal display panel 1.

The back cullet removing unit 7 and the front cullet removing unit 9 perform front-rear and left-right operations by driving a motor, and up and down operations by driving an actuator.

The cleaning section includes a plurality of blades 10 and 14,
It is composed of resin brushes 11 and 15 that rotate by belt driving, and showers 12 and 16 that spray water on the brushes 11 and 15.

The tables 8 and 13 are provided with suction holes at a constant pitch so as not to cause a cell gap defect in the liquid crystal display panel 1. The rear cullet removing unit 7 has a built-in push-up pin 20 as a transfer mechanism for the liquid crystal display panel 1, and the push-up pin 20 is driven by an actuator.

[0035]

As described above, according to the liquid crystal display panel cleaning device of the present invention, the first suction fixing means and the second
A first unit integrally formed with the cleaning means,
By providing the second unit in which the second suction fixing means and the first cleaning means are integrally formed, the size of the cleaning apparatus can be greatly reduced, and space can be saved. it can.

Further, since the first and second cleaning means comprise a blade and a brush, foreign matter and dirt adhering to the liquid crystal display panel can be removed without increasing the size of the two cleaning devices conventionally required. One unit can be used, and space saving and low cost can be realized.

Further, the first and second suction fixing means include:
Since the conductive rubber is attached to the portion in contact with the liquid crystal display panel, it is possible to prevent static electricity and prevent the liquid crystal display panel from being damaged, thereby improving the yield of the liquid crystal display panel.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a liquid crystal display panel cleaning apparatus according to an embodiment, wherein (a) is a plan view and (b) is a side view.

FIG. 2 is an explanatory view showing a cullet removing unit, (a).
Is a plan view, and (b) is a side view.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 liquid crystal display panel 2 conductive rubber 3 stocker 4 take-out cassette 5 take-out arm 6 supply arm 7 backside cullet removal unit 8 table 9 front-side cullet removal unit 10 blade 11 brush 12 shower 13 table 14 blade 15 brush 16 shower 17 panel Storage arm 18 Outstocker 19 Storage cassette 20 Push-up pin

Claims (3)

[Claims] When cleaning a first surface of a liquid crystal display panel, a first surface for adsorbing and fixing a second surface of the liquid crystal display panel is provided.
A second adsorbing and fixing means for adsorbing and fixing the first surface of the liquid crystal display panel when cleaning the second surface of the liquid crystal display panel; A cleaning apparatus for a liquid crystal display panel, comprising: a first cleaning unit that cleans a surface; and a second cleaning unit that cleans a second surface of the liquid crystal display panel. A first unit in which the second cleaning means is integrally formed, and a second unit in which the second suction-fixing means and the first cleaning means are integrally formed. Characteristic cleaning equipment for liquid crystal display panels. 2. The cleaning device for a liquid crystal display panel according to claim 1, wherein said first and second cleaning means comprise a blade and a brush. 3. The first and second suction fixing means,
3. A conductive rubber is adhered to a portion in contact with the liquid crystal display panel.
The cleaning device for a liquid crystal display panel according to the above.