KR20060039782A - Method and apparatus of dropping liquid crystalon substrate - Google Patents

Abstract

Disclosed are a liquid crystal dropping method and a liquid crystal dropping device for dropping a liquid crystal onto a display panel. The liquid crystal dropping method firstly provides the liquid crystal contained in the liquid crystal container to the first passage and the second passage connected to the first passage. Then, the liquid crystal discharged from the second passage is stored in a specified amount. The stored liquid crystal is then provided to the dispenser through a second passage and a third passage connected to the second passage. Next, the liquid crystal provided by the dispenser is dripped at the display panel. In this manner, by accurately storing the specified amount of liquid crystal and dropping the liquid crystal onto the display panel, the precise amount can be accurately dropped onto the display panel.

Description

Liquid crystal dropping method and liquid crystal dropping device {METHOD AND APPARATUS OF DROPPING LIQUID CRYSTALON SUBSTRATE}

1 is a conceptual diagram illustrating a step in which a liquid crystal container is connected to a first passage according to a liquid crystal dropping method according to a first embodiment of the present invention.

2 is a conceptual diagram illustrating a step of storing a predetermined amount of liquid crystal in a liquid crystal temporary storage unit according to the liquid crystal dropping method according to the first embodiment of the present invention.

FIG. 3 is a conceptual diagram illustrating a step of blocking between the first passage and the second passage according to the liquid crystal dropping method according to the first embodiment of the present invention.

4 is a conceptual diagram illustrating a step in which liquid crystal is introduced into the dispenser according to the liquid crystal dropping method according to the first embodiment of the present invention.

5 is a conceptual diagram illustrating a step of dropping liquid crystal onto the display panel according to the liquid crystal dropping method according to the first embodiment of the present invention.

6 is a conceptual diagram illustrating a liquid crystal dropping device according to a second embodiment of the present invention.

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

    10: liquid crystal 100: liquid crystal storage container

200: opening and closing unit 210: first passage

    220: second passage 230: third passage                 

    240 connection member 300 liquid crystal temporary storage unit

    400: dispenser 500: liquid crystal dropping device

The present invention relates to a liquid crystal dropping method and a liquid crystal dropping device. More specifically, the present invention relates to a liquid crystal dropping method and a liquid crystal dropping apparatus capable of accurately dropping an amount of liquid crystal specified in a display panel.

In general, various electronic devices such as a mobile communication terminal, a digital camera, a notebook, a monitor, and the like include a display device for displaying an image in response to an image signal input from an external source.

Various types of display devices, for example, cathode-ray tube (CRT), liquid crystal display (LCD), plasma display panel (PDP), field radiation display device (Field) Emission Display (FED) and Electro Luminescence (EL).

Among these, a liquid crystal display (LCD) displays an image by using optical characteristics of a liquid crystal. Liquid crystal displays (LCDs) have the advantages of being thinner and lighter than other displays and operating at low power consumption and low driving voltage.

Conventional liquid crystal display (LCD) includes a display panel (display panel) for displaying an image using the liquid crystal transmittance of light, the display panel includes a first substrate, a thin film transistor (Thin Film Transistor; TFT), a color filter ( a color filter) and a liquid crystal layer disposed between the first substrate and the second substrate. At this time, the liquid crystal layer is formed by dropping a liquid crystal having fluidity on the first substrate or the second substrate.

In general, in the method of dropping a liquid crystal onto either the first substrate or the second substrate, first, a large amount of liquid crystal is stored in the liquid crystal storage container. Subsequently, a specified amount of liquid crystal is dropped onto the substrate from the liquid crystal storage container.

However, when the liquid crystal is directly discharged from the liquid crystal container to the substrate, the amount of liquid crystal dropped on the substrate is not accurate. For example, when the liquid crystal is directly discharged from the liquid crystal container to the substrate, the amount of liquid crystal discharged to the substrate may be greater than the specified liquid crystal amount, or less than the specified liquid crystal amount.

Accordingly, the present invention has been made in view of such a conventional problem, and a first object of the present invention is to provide a liquid crystal dropping method for dropping a specified amount of liquid crystal onto a display panel.

In addition, a second object of the present invention is to provide a liquid crystal dropping device for implementing the liquid crystal dropping method.

The liquid crystal dropping method for achieving the first object of the present invention first provides the liquid crystal contained in the liquid crystal storage container to the first passage and the second passage connected to the first passage. Then, the liquid crystal discharged from the second passage is stored in a specified amount. The stored liquid crystal is then provided to the dispenser through a second passage and a third passage connected to the second passage. Next, the liquid crystal provided by the dispenser is dripped at the display panel.

In addition, the liquid crystal dropping device for achieving the second object of the present invention includes a liquid crystal container, an opening and closing unit, a liquid crystal temporary storage unit and a dispenser.

The liquid crystal storage container houses the liquid crystal. The opening / closing unit is connected to the liquid crystal container and has a first passage through which liquid crystal flows in, a second passage through which liquid crystal enters and exits, and a third passage through which liquid crystal is discharged, and includes a first passage, a second passage, a second passage, and a third passage. It includes a connection member for connecting. The liquid crystal temporary storage unit is connected to the second passage and sucks and stores the liquid crystal from the first barrel by a predetermined amount. The dispenser is connected to the third passage, sucks a predetermined amount of liquid crystal from the suction unit through the second passage, and drops the liquid crystal onto the display panel.

As described above, the present invention is characterized in that, before the liquid crystal is discharged from the liquid crystal container and directly dropped onto the display panel, a predetermined amount of liquid crystal is temporarily stored and then the correct amount is dropped onto the display panel.

For example, when the amount of liquid crystal dropped into the display panel is less than the required amount, a problem occurs in that an image does not appear where the liquid crystal is not filled in the display panel, whereas the amount of liquid crystal dropped into the display panel is required. In more cases, a problem of contaminating the inside and the periphery of the display panel occurs due to the overflowed liquid crystal.

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

Liquid crystal dropping method

Example 1

1 is a conceptual diagram illustrating a step in which a liquid crystal container is connected to a first passage according to a liquid crystal dropping method according to a first embodiment of the present invention.

Referring to FIG. 1, in order to drop the liquid crystal 10 onto the display panel 450 according to the present embodiment, first, the liquid crystal 10 to be dropped onto the display panel 450 is accommodated in the liquid crystal storage container 100. In the liquid crystal container 100 according to the present embodiment, for example, about 500 cc of liquid crystal 10 is stored.

Subsequently, the liquid crystal contained in the liquid crystal container 100 is provided with an arbitrary amount through the first passage 210 connected to the liquid crystal container 100.

In the present exemplary embodiment, bubbles included in the liquid crystal 10 contained in the liquid crystal container 100 may be removed before the liquid crystal 10 passes through the first passage 210.

2 is a conceptual diagram illustrating a step of storing a predetermined amount of liquid crystal in a liquid crystal temporary storage unit according to the liquid crystal dropping method according to the first embodiment of the present invention.

Referring to FIG. 2, the liquid crystal 10 provided to the first passage 210 is provided to the second passage 220. In the present embodiment, the first passage 210 and the second passage 220 are connected by the connection member 240 in which the connection passage 242 is formed.

The connection member 240 connects or blocks the first passage 210, the second passage 220, the second passage 220, and the third passage 230, which will be described later, through, for example, a rotary motion. For example, in the present embodiment, the connecting member 240 is controlled by an opening and closing control device (not shown), the controlled connecting member 240 is the first passage 210 and the second passage 220 and Opening and closing the connection of the third passage 230.

As a result, the liquid crystal 10 is discharged from the liquid crystal container 100 through the first passage 210 and the second passage 220 connected to the first passage 210.

Subsequently, the liquid crystal 10 discharged into the second passage 220 is stored in a predetermined amount, for example, by the liquid crystal temporary storage unit 300.

The liquid crystal temporary storage unit 300 according to the present embodiment may be, for example, a piston for sucking liquid crystal. The amount of the liquid crystal 10 stored in the liquid crystal temporary storage unit 300 is, for example, about 2 cc to 3 cc, and is about 1 mg to 3 mg by weight. FIG. 3 is a conceptual diagram illustrating a step of blocking between the first passage and the second passage according to the liquid crystal dropping method according to the first embodiment of the present invention.

Referring to FIG. 3, when the liquid crystal 10 is accommodated in the liquid crystal temporary storage unit 300 in a predetermined amount, the connection between the first passage 210 and the second passage 220 is blocked. As a result, the liquid crystal 10 of a specified amount or more is prevented from being accommodated in the liquid crystal temporary storage unit 300.

4 is a conceptual diagram illustrating a step in which liquid crystal is introduced into the dispenser according to the liquid crystal dropping method according to the first embodiment of the present invention.

Referring to FIG. 4, when the liquid crystal 10 is stored in the liquid crystal temporary storage unit 300 in a predetermined amount, the second passage 220 and the third passage 230 are mutually connected by the connection member 240. Connected. The connecting member 240 is rotated at a predetermined angle to connect the second passage 220 and the third passage 230 to each other.

Subsequently, the liquid crystal temporary storage unit 300, for example, the liquid crystal 10 stored in the piston is provided to the second passage 220 and the third passage 230, and the provided liquid crystal 10 is the third passage 230. And a dispenser 400 connected thereto.

5 is a conceptual diagram illustrating a step of dropping liquid crystal onto the display panel according to the liquid crystal dropping method according to the first embodiment of the present invention.

Referring to FIG. 5, the liquid crystal 10 provided to the dispenser 400 is dropped into the display panel 450 through, for example, the liquid crystal injection hole 410.

As described above, the liquid crystal 10 accommodated in the liquid crystal storage container 100 is accommodated by the amount specified by the liquid crystal temporary storage unit 300, and the liquid crystal stored in the liquid crystal temporary storage unit 300 displays the display panel 450. By dropping in, the amount of the liquid crystal 10 dropping onto the display panel 450 may be prevented from being insufficient or dropping more than the required amount.

Liquid crystal dropping device

Example 2

6 is a conceptual diagram illustrating a liquid crystal dropping device according to a second embodiment of the present invention.

Referring to FIG. 6, the liquid crystal dropping apparatus 500 according to the present embodiment includes a liquid crystal storage container 100, an opening and closing unit 200, a liquid crystal temporary storage unit 300, and a dispenser 400.

The liquid crystal storage container 100 according to the present embodiment accommodates the liquid crystal 10. For example, the liquid crystal container 100 according to the present embodiment may accommodate about 500 cc of liquid crystal 10.

In the present embodiment, the liquid crystal container 100 preferably includes a defoaming unit (not shown) for removing bubbles contained in the liquid crystal 10 contained in the liquid crystal container 100.

The opening and closing unit 200 includes a first passage 210, a second passage 220, a third passage 230, and a connection member 240.

The first passage 210 is directly connected to the liquid crystal container 100, and the liquid crystal 10 flows into the first passage 210 from the liquid crystal container 100.

The second passage 220 is discontinuously disposed with the first passage 210.

The third passage 230 is disposed discontinuously with the first passage 210 and the second passage 220.

In this embodiment, the first passage 210, the second passage 220, and the third passage 230 are each disposed toward one center, and the first passage 210, the second passage 220, and the first passage 210 are each disposed toward one center. Each of the three passages 230 is preferably disposed at a circular interval of 120 degrees.

The connection member 240 according to the present embodiment connects or closes the first passage 210 and the second passage 220, the second passage 220, and the third passage 230. The connection member 240 according to the present embodiment may include, for example, a connection passage for connecting the first passage 210 and the second passage 220, the third passage 230, and the second passage 220. 242).

The opening / closing unit 200 controls the connection member 240 to open or close a control device for connecting or blocking the first passage 210 and the second passage 220, the third passage 230, and the second passage 220 ( Not shown).

The liquid crystal temporary storage unit 300 is connected to the second passage 220 to suck and store the liquid crystal 10 provided through the first passage 210 by a predetermined amount.

In the present embodiment, the liquid crystal temporary storage unit 300 may be, for example, a piston suitable for storing liquid crystals, and the liquid crystal 10 stored in the liquid crystal temporary storage unit 300 may be, for example, about 2 cc to 3 cc, and may be about 1 mg to 3 mg by weight.

The dispenser 400 is connected to the third passage 230 and receives a predetermined amount of liquid crystal 10 from the liquid crystal temporary storage unit 300 through the second passage 220 and the third passage 230.

The dispenser 400 according to the present embodiment includes, for example, a liquid crystal jet outlet 410 for discharging the liquid crystal 10, and the liquid crystal 10 introduced into the dispenser 400 is formed by the liquid crystal jet outlet 410. The liquid crystal layer is dropped onto the display panel 450, and as a result, a liquid crystal layer is formed on the display panel 450.

As such, the liquid crystal temporary storage unit 300 temporarily stores the amount of liquid crystal 10 required to be dropped onto one display panel 450, and the connection member 240 includes the first passage 210 and the second. By connecting or blocking the passage 220 and the third passage 230, the amount of liquid crystal dropped on the display panel 450 may be prevented from being insufficient or being dropped more than a specified amount.

According to the present invention, the liquid crystal is not dropped directly from the liquid crystal storage container to the display panel, but the liquid crystal is dropped into the display panel by dropping the liquid crystal in an amount specified by the liquid crystal temporary storage unit in the middle. The amount of d may be prevented from being dropped or dropped more than necessary, and as a result, the display quality of the image may be improved.

In addition, by connecting or blocking the connection between the first passage, the second passage, and the third passage, the flow of the liquid crystal can be efficiently controlled to improve the productivity of the manufacturing process and to prevent part of the liquid crystal from being wasted. .

In the detailed description of the present invention described above with reference to the preferred embodiments of the present invention, those skilled in the art or those skilled in the art having ordinary skill in the art will be described in the claims to be described later It will be understood that various modifications and variations can be made in the present invention without departing from the scope of the present invention.

Claims (9)

Providing liquid crystal contained in the liquid crystal container to a first passage and a second passage connected to the first passage; Storing the liquid crystal discharged from the second passage in a predetermined amount; Providing the stored liquid crystal to the dispenser through the second passage and a third passage connected to the second passage; And Dropping the liquid crystal provided by the dispenser onto a display panel. In the first phase, prior to the step of providing the liquid crystal to the first passage And defoaming the bubbles contained in the liquid crystal contained in the liquid crystal container. The liquid crystal dropping method according to claim 1, wherein the specified amount of liquid crystal is stored in a liquid crystal temporary storage unit. The liquid crystal dropping method according to claim 1, wherein the designated amount is 1 mg to 3 mg. The liquid crystal dropping method according to claim 1, wherein the first passage, the second passage, and the third passage are opened and closed by an opening and closing control device. A liquid crystal accommodating container for storing liquid crystals; A first passage through which the liquid crystal is introduced, a second passage through which the liquid crystal flows in and out, and a third passage through which the liquid crystal is discharged, the first passage, the second passage, and the second passage connected to the liquid crystal storage container; An opening / closing unit including a connecting member connecting the third passage; A liquid crystal temporary storage unit connected to the second passage to suck and store the liquid crystal from the first barrel by a predetermined amount; And a dispenser connected to the third passage to suck the specified amount of liquid crystal from the liquid crystal temporary storage unit through the second passage and drop the liquid crystal onto the display panel. 7. The liquid crystal dropping apparatus according to claim 6, wherein the liquid crystal temporary storage unit is a piston for storing the liquid crystal in a predetermined amount. 7. The liquid crystal dropping apparatus according to claim 6, wherein the designated amount is 1 mg to 3 mg. The method of claim 1, wherein the opening and closing unit further comprises an opening and closing control device for controlling the connecting member for automatically connecting the first passage and the second passage and the second passage and the third passage. Liquid crystal dropping device.

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