KR20050066267A - Apparatus for cleaning in liquid crystal display device - Google Patents

Abstract

The present invention relates to a cleaning apparatus of a liquid crystal display device in which a device is simplified by integrating an area of a high pressure chamber for high pressure treatment of a pad part after grinding and a final shower room for showering on the front of the panel, and remaining on the panel after grinding of the panel. A first shower room for brushing and removing particles by wiping off particles, a second shower room for performing a high pressure treatment on a pad portion of the panel and a shower on the front of the panel, and a first drying room for drying the panel through an air knife And a second drying chamber dried by hot air or infrared rays, an electrostatic removing chamber for removing static electricity on the panel using an ionizer, and an external inspection chamber for inspecting the appearance of the panel.

Description

Apparatus for Cleaning in Liquid Crystal Display Device

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the manufacture of a liquid crystal display, and in particular, a high pressure zone for high pressure treatment of a pad portion after grinding and a final showering zone for showering the front of the panel. The cleaning apparatus of the liquid crystal display device which simplifies the equipment by integrating the area of the present invention.

As the information society develops, the demand for display devices is increasing in various forms, and in recent years, liquid crystal display devices (LCDs), plasma display panels (PDPs), electro luminescent displays (ELD), and vacuum fluorescent (VFD) Various flat panel display devices such as displays have been studied, and some of them are already used as display devices in various devices.

Among them, LCD is the most widely used as the substitute for CRT (Cathode Ray Tube) for mobile image display device because of its excellent image quality, light weight, thinness, and low power consumption. In addition to the use of the present invention has been developed in various ways such as a television and a computer monitor for receiving and displaying broadcast signals.

In order to use such a liquid crystal display as a general screen display device in various parts, it is a matter of how high quality images such as high definition, high brightness and large area can be realized while maintaining the characteristics of light weight, thinness and low power consumption. Can be.

A general liquid crystal display device may be largely divided into a liquid crystal panel displaying an image and a driving unit for applying a driving signal to the liquid crystal panel, wherein the liquid crystal panel includes first and second glass substrates bonded to each other with a predetermined space; It consists of a liquid crystal layer injected between the said 1st, 2nd glass substrate.

Here, the first glass substrate (TFT array substrate) has a plurality of gate lines arranged in one direction at regular intervals, a plurality of data lines arranged at regular intervals in a direction perpendicular to the gate lines, A plurality of pixel electrodes formed in a matrix form in each pixel region defined by crossing a gate line and a data line, and a plurality of thin film transistors switched by signals of the gate line to transfer the signal of the data line to each pixel electrode. Is formed.

The second glass substrate (color filter substrate) includes a light shielding layer for blocking light in portions other than the pixel region, an R, G, and B color filter layers for expressing color colors, and a common electrode for implementing an image. Is formed.

The first and second glass substrates are bonded to each other by a seal material having a predetermined space by a spacer and having a liquid crystal injection hole, so that the liquid crystal is injected between the two substrates.

Here, in the liquid crystal injection method, the liquid crystal is injected between the two substrates by osmotic pressure when the liquid crystal injection hole is immersed in the liquid crystal container by maintaining the vacuum state between the two substrates bonded by the real material. When the liquid crystal is injected as described above, the liquid crystal injection hole is sealed with a sealing material.

The driving principle of the general liquid crystal display device uses the optical anisotropy and polarization property of the liquid crystal. Since the liquid crystal is thin and long in structure, the liquid crystal has directivity in the arrangement of molecules, and the direction of the arrangement of molecules can be controlled by artificially applying an electric field to the liquid crystal. Therefore, when the molecular arrangement direction of the liquid crystal is arbitrarily adjusted, the molecular arrangement of the liquid crystal is changed, and light is refracted in the molecular arrangement direction of the liquid crystal by optical anisotropy, thereby representing image information.

Currently, an active matrix LCD, in which a thin film transistor and pixel electrodes connected to the thin film transistor are arranged in a matrix manner, is attracting the most attention due to its excellent resolution and ability to implement video.

Hereinafter, a cleaning apparatus of a conventional liquid crystal display device will be described with reference to the accompanying drawings.

1 is a plan view illustrating a general liquid crystal panel.

The liquid crystal panel 10 of the general liquid crystal display device having the shape as shown in FIG. 1 is manufactured from the first and second disc glasses (not shown) in which the color filter array and the thin film transistor array are formed, respectively, through the following process. do.

In other words, first, the first disc glass in which a plurality of upper substrates 1 are defined and the second disc glass (not shown) in which a plurality of lower substrates 2 are defined are opposed to each other and bonded together.

Next, a scribe line is formed to distinguish each unit panel.

Then, the unit panels are formed by breaking the scribe lines. At this time, when scribing and breaking each unit panel, the cutting is slightly larger than the actual liquid crystal panel, and then the edges of the liquid crystal panel are rounded through grinding. Polishing is carried out to form a silk machine of the liquid crystal panel 1.

Next, liquid crystal is injected into each unit panel.

Subsequently, a liquid crystal panel assembly is connected to the lower substrate pad part by connecting a tape carrier package (TCP) and a driving printed circuit board (PCB) (not shown) on which a driving drive IC is mounted. Build a Liquid Crystal Panel Assembly. The LCD panel assembly is combined with a backlight assembly and a chassis to manufacture an LCD module, and the LCD module and a case are combined to produce a liquid crystal display device.

On the other hand, each of the plurality of upper substrates 11, R, G, B color filters, black matrix is formed in an array form, the common electrode is formed on the front surface.

Each of the plurality of lower substrates 12 includes a gate line defining a pixel area vertically crossing each other, a data line, a thin film transistor formed at an intersection of the gate line and the data line, and a pixel formed in the pixel area. The electrodes are formed in an array. The lower substrate 12 is formed larger than the upper substrate 11 because the lower substrate 12 further includes a gate pad portion and a data pad portion for applying driving signals to gate lines and data lines. To put a margin.

2 is a schematic view showing cleaning equipment of a conventional liquid crystal display device.

After grinding to round the edges of the liquid crystal panel, particles generated during grinding on the panel and residues of the spraying material for grinding remain, and a cleaning process is required to remove them.

FIG. 2 shows a cleaning apparatus of a conventional liquid crystal display device for cleaning such a panel after grinding. The apparatus for cleaning and removing particles remaining on the panel after grinding the panel is performed by brushing and showering. 1 the shower chamber 11, the high pressure processing chamber 12 for high pressure treatment of the pad portion of the panel, the second shower chamber 13 for showering the front of the panel, and the panel through an air knife A first drying chamber 14 for drying the dust, a second drying chamber 15 for drying by hot air or infrared rays, and an electrostatic removing chamber 16 for removing static electricity on the panel using an ionizer. And an exterior inspection room 17 which performs an exterior inspection of the panel, and each of the loading unit 18a and the side of the first shower room 11 and one side of the exterior inspection room 17 is mounted. The loading section 18b is provided. All.

Hereinafter, with reference to the drawings looks at the function of each chamber of the cleaning equipment of the conventional liquid crystal display device.

3 is a view showing a first chamber for performing the broaching and showering of FIG. 2, FIG. 4 is a view showing a second chamber for performing the high pressure treatment of FIG. 2, and FIG. 5 is a view for performing the final showering of FIG. 2. It is a figure which shows a 3rd room.

As shown in FIG. 3, the panel introduced by the loading unit 18a corresponds to the rear surfaces of the upper and lower substrates 1 and 2 and is attached to the brushes 22a and 22b provided in the first shower room 11. Particles generated during grinding are brushed, and front surfaces of the upper and lower substrates 1 and 2 exposed by the first upper and lower showers 21a and 21b mounted on the upper and lower inner walls of the first shower room 11 are shower rings ( showering). At this time, the particles washed by the brushes 22a and 22b are washed off by the ultra pure water (DI water: De-Ionized Water) supplied by the first upper and lower showers 21a and 21b.

After the liquid crystal injection is performed, the gate pad portion and the data pad portion of the panel 10 are exposed to the outside as a portion connected to the driving printed circuit board (PCB), and after passing through the first shower room 11, FIG. 4. As described above, the ultrafine water must be cleaned by ultrapure water sprayed through a separate high pressure treatment by the high pressure treatment chamber 12.

At this time, the high pressure processing chamber 12 is provided with the injection device 23 only in the formation direction of the gate pad part and the data pad part to perform local cleaning.

Subsequently, as shown in FIG. 5, the panel 10 is moved to the second shower room 13 to perform a final shower on the front surface of the panel 10. At this time, the final shower ring is provided with second upper and lower showers 24a and 24b in the second shower room 12, and showers ultrapure water to the back of the upper and lower substrates 1 and 2 of the panel 10. By feeding in a fashion.

Next, in the first drying chamber 14, air is blown by an air knife to dry the surface of the panel 10, that is, the back surface of the upper and lower substrates 1 and 2.

Subsequently, hot air or infrared rays are applied to the surface of the panel 10 in the second drying chamber 15 to complete drying.

Subsequently, in the static elimination chamber 16, predetermined ions are generated through an ionizer to react with the static electricity generated on the surface of the panel 10 to neutralize them.

Subsequently, the wiring formed in the pad portion of the panel 10 is inspected in the external inspection room 17 to prepare for the connection with the subsequent driving circuit printed board.

Subsequently, the panel 10 is taken out of the cleaning equipment by the unloading part 18b.

Here, the movement of the panel from the loading part 18a to the unloading part 18b is made to a conveying apparatus such as a roller.

However, the cleaning equipment of the conventional liquid crystal display device as described above has the following problems.

That is, the space occupied by each seal in the cleaning equipment from the loading unit to the unloading unit is large, and thus the length of the cleaning equipment is increased, so that the length of the cleaning equipment is required to maximize the space utilization.

The present invention has been made to solve the above problems, and after grinding, to provide the cleaning equipment of the liquid crystal display device by simplifying the equipment by integrating the region of the High Pressure Zone and the Shower Zone. , Its purpose is.

Cleaning apparatus of the liquid crystal display device of the present invention for achieving the above object is a high pressure treatment of the first shower room for performing a brush and the brush to remove the particles remaining on the panel after grinding the panel and the shower, and the pad portion of the panel And a second shower room for showering the entire surface of the panel, a first drying room for drying the panel through an air knife, a second drying room for drying by hot air or infrared rays, and static electricity on the panel using an ionizer. It is characterized in that it comprises a static elimination chamber to remove and the appearance inspection chamber to perform the appearance inspection of the panel.

A loading part / unloading part of the panel is provided at one side of the first shower room and the external inspection room.

The second shower room includes a spraying device for performing high pressure injection of ultra pure water corresponding to the pad portion formed on the panel, and a shower for ultrapure water cleaning corresponding to the entire surface of the panel.

The injection device is provided with a plurality of high-pressure injection on all of the pad portion formed in the panel.

When the ultrapure water is injected at the pad portion of the panel using the injection device, the panel is in a stopped state.

The injection device is provided in the gate pad portion and the data pad portion formed in the panel according to the forming direction, respectively.

The injection device linearly moves along the forming direction of the gate pad portion and the data pad portion formed in the panel.

The shower showers ultrapure water in the panel with the transfer of the panel.

The shower showers ultrapure water on the upper and lower surfaces of the panel.

Hereinafter, the cleaning equipment of the liquid crystal display of the present invention will be described in detail with reference to the accompanying drawings.

6 is a schematic view showing the cleaning equipment of the liquid crystal display device of the present invention.

As shown in FIG. 6, the cleaning apparatus of the liquid crystal display according to the present invention includes a loading unit 60 into which a panel is introduced, a first shower room 61 which performs a brushing and a shower to remove particles remaining on the panel after grinding. ), A second shower chamber 62 for high pressure treatment of the pad portion of the panel and a shower on the front surface of the panel, a first drying chamber 63 for drying the panel through an air knife, and hot air. Or a second drying chamber 64 dried by infrared rays, an electrostatic eliminating chamber 65 for removing static electricity on the panel by using an ionizer, and an external inspection chamber which performs external appearance inspection of the panel. Including 66.

That is, the cleaning equipment of the liquid crystal display device according to the present invention configures both the high pressure treatment and the elements necessary for the showering to simultaneously perform the high pressure treatment on the pad portion of the panel and the final shower on the front surface of the panel in the second shower room 62. This reduces space in the cleaning equipment and improves space utilization.

In addition, the movement of the panel in each chamber of the cleaning equipment of the liquid crystal display device of the present invention is performed through a transfer device such as a roller provided at a position corresponding to the panel in each chamber.

In the cleaning equipment of the liquid crystal display of the present invention, the panel in which the cleaning process is performed is provided between the upper substrate 41 on which the color filter array is formed, the lower substrate 42 on which the thin film transistor array is formed, and the two substrates 41 and 42. It is formed of a liquid crystal layer (not shown) formed.

Each of the upper substrates 41 includes R, G, B color filters, and a black matrix in an array form, and a common electrode is formed on an entire surface of the upper substrate 41.

In the lower substrate, a gate line defining a pixel area crossing each other perpendicularly to each other, a data line, a thin film transistor formed at an intersection of the gate line and the data line, and a pixel electrode formed in the pixel area are formed in an array form. It is.

The lower substrate 42 is formed larger than the upper substrate 41 because the lower substrate 42 further includes a gate pad portion and a data pad portion for applying driving signals to the gate lines and the data lines. To put a margin.

Hereinafter, the function of each chamber of the washing | cleaning apparatus of the liquid crystal display device of this invention is demonstrated with reference to drawings.

FIG. 7 is a view showing a first chamber for performing the broaching and showering in FIG. 6.

As shown in FIG. 7, the panel introduced by the loading unit 60 is connected to the rear surfaces of the upper and lower substrates 41 and 42 by brushes 72a and 72b provided in the first shower room 61. Particles, etc., generated during grinding are brushed, and the front and bottom surfaces of the upper and lower substrates 1 and 2 exposed by the upper and lower showers 21a and 21b mounted on the upper and lower inner walls of the first shower chamber 61 are showering. )do. At this time, the particles washed by the brushes 22a and 22b are washed off by the ultra pure water (DI water: De-Ionized Water) supplied by the first upper and lower showers 21a and 21b.

FIG. 8 is a view showing a second shower room that performs the high pressure treatment and final showering of FIG. 7, and FIG. 9 is a view showing the high pressure treatment direction in the second shower room of FIG. 8.

The pad portion of the panel 10, that is, the gate pad portion and the data pad portion is exposed to the outside as a portion connected to the driving printed circuit board (PCB), and passes through the first shower room 61, and then separately Should be cleaned by ultrapure water sprayed through high pressure treatment.

A part of performing the high pressure treatment is the second shower room 62. In the second shower room 62, the injection device 82a corresponding to the pad formed on the panel and performing ultra-high pressure (DI Water) injection is performed. 82b), and second upper and lower showerheads 81a and 81b are provided on the upper and lower inner walls of the second shower room so as to perform ultrapure water cleaning corresponding to the entire surface of the panel, and to the second shower room 62 by a roller or the like. Ultra-pure water is cleaned at a high pressure on the pad portion of the panel 40 by the injection apparatuses 82a and 82b provided by fixing the panel 40 that has been brought in for a predetermined time, and the second upper and lower showers 81a and 81b are provided. The final shower is performed on the front of the panel 40 through.

The injection apparatuses 82a and 82b may be provided in plural to spray high pressure on all of the pad portions formed in the panel, or as shown in FIG. 9, the injection apparatuses 82a and 82b may include gate pad portions and data pads formed in the panel. Each part is provided one by one according to the formation direction, and moves linearly according to the formation direction of the gate pad part and the data pad part, respectively, and the high pressure injection process can be completed for each pad part.

Like the former, when a plurality of the injection device (82a, 82b) is provided, when the ultra-pure high pressure injection of the pad portion of the panel 40 by using the injection device (82a, 82b), the panel 40 is stopped to be.

Here, only one pad portion of the gate pad portion or data pad portion is linearly moved, and the other pad portion moves the panel 40 by a transfer device such as a roller, and the second upper and lower showers 81a and 81b allow the panel ( 40) It can also proceed with the shower ring that goes on the front.

Here, the ultrapure water to be injected under high pressure is discharged through the injection devices 82a and 82b, and the ultrapure water (DI water) used in the general cleaning process is discharged through the second upper and lower showers 81a and 81b.

The second upper and lower showers 81a and 81b shower ultrapure water on the back surface of the upper and lower substrates 41 and 42 of the panel 40 together with the transfer of the panel 40 which is stopped at the time of high pressure injection.

As such, after the high pressure treatment and the final showering are completed through the second shower room 62, the air is blown by an air knife in the first drying room 63, that is, the surface of the panel 40, that is, The back surfaces of the upper and lower substrates 41 and 42 are dried.

Subsequently, hot air or infrared rays are emitted to the surface of the panel 40 in the second drying chamber 64 to complete drying.

Subsequently, in the static elimination chamber 65, predetermined ions are generated through an ionizer to react with the static electricity generated on the surface of the panel 40 to neutralize them.

Subsequently, the wiring formed in the pad portion of the panel 40 is inspected in the external inspection room 66 to prepare for the connection with the subsequent driving circuit printed board.

Subsequently, the panel 40 is taken out of the cleaning equipment by the unloading part 67.

The cleaning equipment of the liquid crystal display device of the present invention as described above has the following effects.

After grinding, the high pressure zone and shower zone of the scrubber can be combined into one chamber to reduce the size of the equipment, thereby maximizing space utilization.

In addition, the reduced size of the equipment can reduce the time it takes to clean the panel.

1 is a plan view showing a typical liquid crystal panel

2 is a schematic view showing cleaning equipment of a conventional liquid crystal display device

FIG. 3 shows a first chamber for broaching and showering in FIG. 2. FIG.

4 shows a second chamber for performing the high pressure treatment of FIG.

FIG. 5 shows a third chamber to perform the final showering of FIG.

6 is a schematic view showing cleaning equipment of the liquid crystal display device of the present invention.

FIG. 7 is a view illustrating a first shower room that performs the browsing and showering of FIG. 6.

FIG. 8 shows a second shower room for performing the high pressure treatment and final showering of FIG.

FIG. 9 is a view illustrating a high pressure treatment direction in the second shower room of FIG. 8.

* Description of the main parts of the drawings *

40 liquid crystal panel 41 upper substrate

42: lower substrate 60: loading portion

61: the first shower room 62: the second shower room

63: first drying chamber 64: second drying chamber

65: static electricity removing room 66: outer laboratory

67: unloading unit 71a, 71b: shower

72a, 72b: Brush 81a, 81b: Shower

82a, 82b: High Pressure DI Injector

Claims (9)

A first shower room for wiping and removing the particles remaining on the panel after grinding the panel; A second shower room for performing high pressure treatment on the pad portion of the panel and showering the front of the panel; A first drying chamber for drying the panel through an air knife; A second drying chamber dried by hot air or infrared rays; A static electricity removing chamber for removing static electricity on the panel using an ionizer; And Cleaning equipment for a liquid crystal display device, comprising: an external inspection room for performing an external inspection of the panel. The method of claim 1, And a loading part / unloading part of the panel on one side of the first shower room and the external inspection room. The method of claim 1, The second shower room And a spraying device for performing ultra pure water (DI Water) high pressure injection corresponding to the pad portion formed on the panel, and a shower unit for ultrapure water cleaning corresponding to the entire surface of the panel. The method of claim 3, wherein And a plurality of spraying apparatuses so as to spray at a high pressure on all of the pad portions formed in the panel. The method of claim 4, wherein And the panel is in a stop state when the ultrapure water is injected at a pad portion of the panel by using the injection device. The method of claim 3, wherein And the injection apparatuses are respectively provided in the gate pad portion and the data pad portion formed in the panel according to the forming direction. The method of claim 6, And the spray device moves linearly along the forming direction of the gate pad portion and the data pad portion formed on the panel. The method of claim 3, wherein And the shower unit showers ultrapure water in the panel together with the transfer of the panel. The method of claim 3, wherein The shower device is a cleaning device of the liquid crystal display device, characterized in that for showering the ultrapure water on the upper and lower front surfaces of the panel.