KR20080001237A - Seal curing device for liquid crystal display device - Google Patents

Abstract

A seal curing device of an LCD(Liquid Crystal Display) is provided to form plural pins for performing up/down function in a sub support and prevent an active area of a glass substrate from being contacted with the sub support while a seal pattern is cured, thereby preventing the active area of the glass substrate from being pressed by its own loads. First and second cradles(115b) are formed in parallel to each other. Sub supports(110a~110d) are crossed with the first and second cradles. Plural pins(130) are formed on the sub support. The sub supports are integrated with the first and second cradles. The plural pins, formed on the sub support, can perform up/down functions. A controller controls the up/down function of the plural pins. On the sub supports, a pin hole corresponding to the plural pins is formed.

Description

Seal curing device for liquid crystal display

1 is a view schematically showing a seal pattern curing apparatus of a conventional liquid crystal display device.

Figure 2a is a view from above of the glass substrate is placed on the sub support of Figure 1;

2B is a cross-sectional view taken along line AA ′ of FIG. 2A;

3 is a view showing a seal curing device of a liquid crystal display according to the present invention.

4 is a detailed view of the sub support and the pin of FIG.

FIG. 5A is a view from above of a glass substrate on the sub support of FIG. 3; FIG.

5B is a cross-sectional view taken along line BB ′ of FIG. 5A.

<Brief description of the main parts of the drawing>

100: seal curing chamber 103: glass substrate

110a to 110d: first to fourth supports

115a, 115b: 1st and 2nd holder 120: Sub supporter

125a, 125b: first and second pin drive motors

130: Pin 140: Drive section

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device, and more particularly, to a seal curing apparatus of a liquid crystal display device capable of reducing defects in an active region.

As the information society develops, the demand for display devices is increasing in various forms. In response to this, various flat panel display devices such as LCD (Liquid Crystal Display Device), PDP (Plasma Display Panel) and ELD (Electro Luminescent Display) have been studied. It is used as a display device.

Among them, liquid crystal displays are the most widely used, replacing CRTs for mobile image display devices because of their excellent image quality, light weight, thinness, and low power consumption. In addition to the mobile use, such as a variety of TV monitors have been developed.

A liquid crystal display device displays an image using 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 molecular arrangement can be controlled by artificially applying an electric field to the liquid crystal.

In the liquid crystal panel for the liquid crystal display device, a process of manufacturing an array substrate in which pixel electrodes and thin film transistors are formed for each pixel, and a common electrode and red, green, and blue colors are formed corresponding to each pixel while facing the array substrate. The liquid crystal layer is formed between the process of manufacturing the color filter substrate, and the array substrate and the color filter substrate manufactured by the above two processes, and then a series of processes of bonding are completed.

The manufacturing process of a liquid crystal panel is demonstrated simply.

The liquid crystal panel manufacturing process is called a cell process, and the cell process is an array process in which thin film transistors are arranged and an alignment process for aligning liquid crystals in one direction to a color filter substrate on which color filters are formed. It can be largely divided into a cell gap forming step, a cell cutting step, and a liquid crystal layer forming step to maintain the.

An alignment layer is formed on the array substrate and the color filter substrate, and the array substrate and the color filter substrate on which the alignment layer is formed are subjected to a rubbing process. The array substrate and the color filter substrate which have undergone the rubbing process may proceed to form a seal pattern.

At this time, a seal pattern is formed on the array substrate, which is a lower substrate.

Meanwhile, in order to bond the array substrate and the color filter substrate, the color filter pattern of the upper substrate and the pixels of the lower substrate must be exactly matched, which is referred to as a bonding alignment.

The degree of adhesion alignment is determined by a margin given during the design of each substrate, and the adhesion margin is attributable to the degree of overlap between the black matrix on the color filter substrate and the pixel electrode on the array substrate.

After the array substrate and the color filter substrate are bonded together to form a liquid crystal panel, a uniform pressure is applied to the liquid crystal panel, and at the same time, heat is applied to the seal pattern or UV is maintained to maintain a constant cell gap. Harden.

The plurality of array substrates on which the seal pattern is formed are moved to a device for curing the seal pattern and simultaneously cured in a batch in the seal pattern curing device.

1 is a view schematically showing a seal pattern curing apparatus of a conventional liquid crystal display.

As shown in FIG. 1, the seal pattern curing apparatus of the conventional liquid crystal display device includes a seal curing chamber 1, and the first to fourth supports 10a to 10d are perpendicular to the seal curing chamber 1. It is erected in the direction, and a plurality of first and second cradles 15a and 15b hang on the first to fourth support bases 10a to 10d.

In addition, the seal curing chamber 1 has a plurality of sub-supports 20 intersecting with the first and second cradles 15a and 15b and integrally formed with the first and second cradles 15a and 15b. It is included.

 A glass substrate (not shown) having a seal pattern is placed on the first and second holders 15a and 15b and the sub supporter 20 integrally formed with the first and second holders 15a and 15b.

The glass substrate on which the seal pattern is formed is moved to the seal curing chamber 1 and cured by heat or UV in the seal curing chamber 1.

FIG. 2A is a view showing the glass substrate on the sub support of FIG. 1 from above, and FIG. 2B is a cross-sectional view taken along line AA ′ of FIG. 2A.

As shown in FIGS. 2A and 2B, the glass substrate 3 having the seal pattern is mounted on the sub support 20.

As mentioned above, the glass substrate 3 has a seal pattern formed thereon and is mounted on the sub support 20 of the seal curing chamber 1 to cure the seal pattern.

The sub supporter 20 supports the glass substrate 3 while the seal pattern formed on the glass substrate 3 is cured in the seal curing chamber 1.

The sub supporter 20 supports the glass substrate 3 while the seal pattern formed on the glass substrate 3 is cured. In particular, since the active region of the glass substrate 3 is supported on the sub support 20, a failure of pressing the active region of the glass substrate 3 occurs due to the self-load of the glass substrate 3.

If the active area of the glass substrate 3 is depressed in a bad state, the bad state occurs in the pixels formed in the active area.

In addition, the sub support 20 is replaced for each size of the glass substrate 3, thereby increasing the process time and cost is also increased.

An object of the present invention is to provide a seal curing apparatus of a liquid crystal display device capable of reducing defects in an active region.

It is an object of the present invention to provide a seal curing apparatus of a liquid crystal display device which can shorten the process time.

An object of the present invention is to provide a seal curing apparatus of a liquid crystal display device which can reduce the cost.

The seal curing apparatus of the liquid crystal display device according to the present invention for achieving the above object is a first and second cradles formed in parallel with each other, a sub supporter and a plurality of formed on the sub supporter crossed with the first and second holders; It characterized in that it comprises a pin.

Hereinafter, with reference to the accompanying drawings will be described an embodiment according to the present invention.

3 is a view showing a seal curing device of a liquid crystal display according to the present invention.

As shown in FIG. 3, the seal curing apparatus of the liquid crystal display according to the present invention includes a seal curing chamber 100, and the first to fourth support bases 110a are disposed in the seal curing chamber 100 in a vertical direction. ~ 110d is provided, and the first and second cradles (115a, 115b) connected to the first to fourth support (110a ~ 110d) is provided on the first to fourth support (110a ~ 110d) It is.

In addition, the seal curing chamber 100 includes a plurality of sub supporters 120 integrally connected to the first and second cradles 115a and 115b and intersecting the first and second cradles 115a and 115b. It includes more.

A plurality of pins 130 are formed on the sub supporter 120, and the plurality of pins 130 are up / down through holes (not shown) formed on the sub supporter 120. Function is possible.

First and second pin driving motors 125a and 125b are respectively formed in the first and second cradles 115a and 115b to control the up / down function of the pin 130. . That is, the first pin driving motor 125a is formed in the first cradle 115a, and the second pin driving motor 125b is formed in the second cradle 115b.

The first pin driving motor 125a controls a portion of the plurality of pins 130 formed on the sub supporter 120, and the second pin driving motor 125b is the first pin driving motor 125a. It controls the extra pins except the ones that it controls.

The driving unit 140 is formed outside the seal curing chamber 100 to collectively control the first and second pin driving motors 125a and 125b.

In this case, the seal curing chamber 100 is provided with about 30 first and second cradles 115a and 115b as an example.

The glass substrate on which the seal pattern is formed is mounted on the sub support 120. That is, the sub supporter 120 supports the glass substrate on which the seal pattern is formed.

As described above, a plurality of pins 130 are formed in the sub support 120, and the plurality of pins 130 are formed through holes corresponding to the plurality of pins 130, respectively. Up or down into the hole to perform a function.

Up / down of the plurality of pins 130 is controlled by the first and second pin driving motors 125a and 125b provided in the first and second cradles 115a and 115b.

4 is a view illustrating in detail the sub supporter and the pin of FIG.

3 and 4, for example, five pins 130 are formed on the sub supporter 120. The pins 130 perform an up / down function in the pinholes H corresponding to the pins 130, respectively.

Since the inside of the sub support 120 has an empty structure and the inside thereof is empty, the pin 130 is connected to the pin 130 and the first pin driving motor 125a through the pin hole H. Perform the Up / Down function of.

The pin 130 is controlled so that the first pin driving motor 125a performs an up / down function of the pin 130. The first pin driving motor 125a controls the up / down function of the pin 130 according to a program of the driving unit 140 provided outside the seal curing chamber 100.

The drive unit 140 includes a program for controlling the up / down function of the pin 130 according to the glass substrate size.

The sub supporter 120 supports the glass substrate on which the seal pattern is formed, and when the pin support 130 is formed on the sub supporter 120, the sub supporter 120 supports the glass substrate. The fins 130 formed on the sub supporter 120 support the non-display area except for the active area of the glass substrate.

The fins 130 corresponding to the active area of the glass substrate on the sub supporter 120 perform a down function, and the fins 130 corresponding to the non-display area of the glass substrate have an up function. Perform.

As a result, only the non-display area of the glass substrate is supported by the pins 130 formed on the sub supporter 120.

As a result, since the active region of the glass substrate does not contact the sub supporter 120, the phenomenon in which the active region of the glass substrate is not depressed due to its own load of the glass substrate does not occur.

The fin 130 selectively performs a down function in the active region of the glass substrate, and selectively performs an up function in a region other than the active region of the glass substrate.

As a result, the active area of the glass substrate does not contact the sub supporter 120 while the glass substrate is supported on the sub supporter 120. The substrate is not generated in the active region.

In addition, since the pin 130 formed on the sub supporter 120 can selectively up / down according to the first pin driving motor 125a, the pin 130 may be formed according to the glass substrate size. ) Can be properly controlled to prevent the active region of the glass substrate from contacting the fin 130.

In the non-display area except for the active area of the glass substrate supported on the sub support 120, the fins 130 formed at a position corresponding to the non-display area perform an up function. Only the display area is supported by the pins 130 of the sub supporter 120.

As the fins 130 formed at the position corresponding to the active area of the glass substrate on the sub supporter 120 perform a down function, the active area of the glass substrate is the pin of the sub supporter 120. Not supported by the 130.

FIG. 5A is a view showing the glass substrate on the sub support of FIG. 3 from above. FIG. 5B is a cross-sectional view of FIG. 5A taken along B-B '.

The sub supporter 120 includes a plurality of pins 130, and the pins 130 of the sub supporter 120 support the glass substrate 103 on which a seal pattern (not shown) is formed. That is, the glass substrate 103 having the seal pattern is mounted on the sub support 120 having the plurality of pins 130.

The glass substrate 103 on which the seal pattern is formed is mounted on the sub support 120 of the seal curing chamber 100 (see FIG. 3). The seal pattern formed on the glass substrate 103 is cured by heat or UV in the seal curing chamber 100.

A plurality of pins 130 are formed on the sub supporter 120 so that the pins 130 support the glass substrate 103.

Since the pin 130 performs an up / down function, a part of the plurality of pins 130 supporting the glass substrate 103 performs an up function and the other part is down. (Down) function can be performed.

All of the plurality of pins 130 may perform an up function, or all of the plurality of pins 130 may perform a down function to support the glass substrate 103.

The up / down function of the plurality of pins 130 is based on the first and second pin driving motors 125a and 125b formed on the first and second cradles 115a and 115b of FIG. 3. Determined according to the control, the first and second pin driving motors 125a and 125b are driven according to a program of an externally provided driving unit (140 in FIG. 3).

When the glass substrate 103 is mounted on the pin 130 formed on the sub support 120, the pin 130 may support the glass substrate 103.

Therefore, the sub supporter 120 does not directly support the glass substrate 103, but the pin 130 formed on the sub supporter 120 supports the glass substrate 103.

The fins 130 corresponding to the non-display area of the glass substrate 103 on the sub supporter 120 perform an up function and the fins 130 corresponding to the active area of the glass substrate 103. ) Will perform the down function.

As a result, since the active area of the glass substrate 103 does not directly contact the fins 130 formed on the sub support 120, the active area of the glass substrate 103 is poor in pressing due to its own load. This can be prevented from occurring.

While the seal pattern formed on the glass substrate 103 is cured in the seal curing chamber (100 of FIG. 3), the active region of the glass substrate 103 does not come into contact with the sub support 120 so that the glass substrate It is possible to prevent the pressing area from occurring due to its own load in the active region of 103.

In addition, the process to freely control the up / down function of the pins 130 on the sub support 120 according to the glass substrate size, compared to the conventional process of replacing the sub support 130 for each glass substrate size Save time and money.

As mentioned above, the seal curing apparatus of the liquid crystal display according to the present invention forms a plurality of pins on the sub supporter that perform up / down functions, thereby forming an active region of the glass substrate while the seal pattern is cured. By preventing the sub supporter from contacting the active area of the glass substrate can reduce the poor failure caused by the self-load of the glass substrate.

As described above, the seal curing apparatus of the liquid crystal display according to the present invention forms a plurality of pins for performing an up / down function on the sub supporter, thereby forming an active region of the glass substrate while the seal pattern is cured. By preventing the sub supporter from contacting the active area of the glass substrate can reduce the poor failure caused by the self-load of the glass substrate.

In addition, the seal curing apparatus of the liquid crystal display according to the present invention controls the up / down function of the pins according to the glass substrate size, thereby replacing the sub supporter for each glass substrate size. Compared to the device, process time and cost can be reduced.

Claims (6)

First and second cradles formed side by side; A sub supporter crossed with the first and second holders; And And a plurality of pins formed on the sub supporter. The method of claim 1, And the sub supporter is integrally formed with the first and second holders. The method of claim 1, And a plurality of pins formed on the sub supporter to enable an up / down function. The method of claim 3, wherein Seal curing apparatus further comprises a control unit for controlling the up / down function of the plurality of pins. The method of claim 1, And a pinhole corresponding to the plurality of pins is formed on the sub supporter. The method of claim 1, And a first to fourth supporters for supporting the first and second holders.

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