KR100464850B1 - Liquid Crystal Injection Port Encapsulation Press - Google Patents

Abstract

Even if cells of different sizes are put in the pressurizing chamber, the cylinder is pre-formed in the upper surface of the base metal and aligned in the alignment groove so that the cylinder is always located at the center of the cell regardless of the size of the cell. The cell gap can be uniformly controlled by aligning the cylinder with the bar at the center of the cell.

In addition, by inserting a rubber with a large impact buffer effect between the cell and the cell, between the cell and the metal spacer, between the metal spacer and the metal spacer to cushion the force imbalance caused by the mechanical difference between the cylinders to deliver a uniform force to the cell The gap can be controlled uniformly.

Description

Liquid Crystal Injection Port Encapsulation Press

The present invention relates to a press for encapsulating a liquid crystal injection hole, and more particularly, in an end seal process, an LCD is formed by forming an alignment groove in the base metal so that the cylinder is always located at the center of the metal spacer regardless of the size of the cell. The present invention relates to a press for encapsulating a liquid crystal injection hole in which the cell gap of the panel is uniformly controlled.

In general, the LCD panel includes a thin film transistor substrate (hereinafter referred to as a TFT substrate), a color filter substrate facing the TFT substrate, and a liquid crystal material injected between the two substrates, and thus the electro-optic of the liquid crystal inserted therein. Display device using properties.

Here, in order to inject a liquid crystal material between the TFT substrate and the color filter substrate, a spacer is added along the edge of the color filter substrate except for a predetermined portion, and then the TFT substrate and the color filter substrate are aligned. Thereafter, the aligned TFT substrate and the color filter substrate are moved to a hot press facility to apply a predetermined pressure and heat to the TFT substrate and the color filter substrate to cure the yarn, thereby forming a cell gap having a predetermined height between the TFT substrate and the color filter substrate. do.

As such, when the yarn is cured by heat and pressure, the TFT substrate and the color filter substrate are cut to size, and then the liquid crystal is injected into the cell gap through a predetermined portion, that is, the liquid crystal injection hole, where the seal is not printed. Thereafter, the ultraviolet curable material is printed on the liquid crystal inlet and the liquid crystal inlet is sealed by using a liquid crystal inlet encapsulation press to prevent the liquid crystal from leaking out.

As shown in FIG. 1, the liquid crystal injection hole encapsulation press 1 includes a pressure chamber 10 through which a liquid crystal injection hole encapsulation process is performed, and a cell jig 20 into which the cell 36 is accommodated and injected into the pressure chamber 10. And a guide holder 12 formed at an edge of the pressure chamber 10 to guide the cell jig 20 to a proper position of the pressure chamber 10, and spaced apart from the guide holder 12 by a predetermined distance. The base metal 14 installed inside the holder 12 and one or more cylinders 16 installed on the pressure chamber 10 to pressurize the cell 36 to seal the liquid crystal injection hole.

Here, the cell jig 20 is present in the upper plate 22 and the lower surface of the upper plate member 22 formed with a plurality of first screw grooves 22 ′ to correspond to the different cell 36 sizes. The upper plate member is provided between the lower plate member 24 and the upper plate member 22 and the lower plate member member 24 formed with the second screw groove member 24 'so as to correspond to the first screw groove member 22' formed in the 22. The support plate material 26 which supports the 22, and the alignment plate material 28 which is provided inside the support plate material 26, and forms the accommodating space so that it may fit in the size of the cell 36 accommodated in the cell jig 20. It consists of. Here, reference numerals 32 and 32 'are metal spacers for uniformly transmitting a force to the cell 36, and 34 is a paper for preventing scratches on the surface of the cell 36 by friction.

Referring to the operation of the liquid crystal injection port sealing press equipment configured as described above is as follows.

For example, when the cell jig 20 is housed with, for example, a 12.1 inch cell 36, the alignment plate 28 is first moved to the first and second threaded grooves 22 'and 24' corresponding to the 12.1 inch. The upper plate 22, the alignment plate 28, and the lower plate 24 are mutually coupled to each other by inserting the screws 29 into the first and second screw grooves 22 'and 24'. ) To create a space to accommodate the cell size of 12.1 inches.

As described above, when the storage space is formed in the cell jig 20, the metal spacer 32 ′ that uniformly transmits force to the cell 36 is stored in the storage space and the paper 34 is placed on the metal spacer 32 ′. Then, a plurality of 12.1 inch cells 36 having a TFT substrate and a color filter substrate attached thereto are stacked on the paper 34. At this time, the paper 34 is inserted between the cell 36 and the cell 36 to prevent scratches on the surface of the cell 36 by friction. In addition, the metal spacer 32 is placed on the upper surface of the 12.1-inch cell 36 and the paper 34 is inserted between the cell 36 and the metal spacer 32.

When a plurality of metal spacers 32 and 32 ', a paper 34, and a 12.1-inch cell 36 are stacked in the storage space of the cell jig 20, the cylinder 16 is driven to drive the metal spacers 32 in a predetermined manner. The liquid crystal inlet is sealed by pressurizing with pressure and irradiating ultraviolet rays to the cell 36 to cure the ultraviolet curable material.

However, the cylinder for pressurizing the cell may be located at the center of the cell or not at the center of the cell, depending on the size of the cell. When the cylinder is not located at the center of the cell, the force for pressing the cell is biased in one place. As a result, the cell gap cannot be formed uniformly. The reason why the cylinder is not located at the center of the cell is that the cells accommodated in the cell jig are different in size, and the cylinder is aligned to be located at the center of any one cell having a predetermined size.

In addition, when a plurality of cylinders are installed in the pressurizing chamber, a difference in force for pressurizing the cell is generated due to the mechanical difference of each cylinder, and this difference in force acts as an obstacle to control the cell gap uniformly. There was a problem that the uniformity is degraded.

Therefore, an object of the present invention is devised in view of the above problems, by forming an alignment groove in the base metal by the size of the cell so that the cylinder is always located in the center of the cell, and inserts the alignment plate in the alignment groove It is to uniformly control the cell gap by keeping the cylinder always in the center of the cell.

In addition, by inserting a rubber material having a large impact buffer effect between the cell and the cell to prevent the uniformity of the cell gap is lowered by the mechanical difference of the cylinder.

In order to achieve the above object, the liquid crystal injection hole encapsulation press of the present invention includes a pressurized chamber in which a process of encapsulating a liquid crystal inlet is performed, a base metal installed on a lower surface of the pressurized chamber and transmitting a force to a cell, and an upper portion of the base metal A cell jig placed inside the cell jig, a cell jig having an accommodating space therein for accommodating the cell and metal spacers, a cylinder installed on the upper surface of the pressure chamber to press the cell housed in the cell jig, and a cell center regardless of the size of the cell And an alignment portion formed inside the pressurizing chamber so that the cylinder is always located at the portion to limit the moving range of the cell jig.

Preferably, the alignment part includes alignment grooves formed by the size of the cell on the base metal, and an alignment bar fitted into the alignment groove to limit the movement range of the cell jig. Also, in order to transmit uniform force to the cell, rubber having a large impact buffering effect is sandwiched between the cell and the cell and between the cell and the metal spacer.

Hereinafter, the structure of the liquid crystal injection hole encapsulation press according to the present invention will be described with reference to the accompanying drawings.

As shown, the liquid crystal injection hole encapsulation press 100 includes a pressurizing chamber 110 in which a process is performed, a cell jig 120 in which a cell 136 to be processed is processed, and is injected into the pressurizing chamber 110. The base metal 114 is installed on the lower surface of the pressure chamber 110 to transmit a force to the cell 136 and the cell 136 is installed on the pressure chamber 110 at a predetermined pressure to seal the liquid crystal injection hole. One or more cylinders 116 to pressurize the pressure chamber 110 and the inside of the pressure chamber 110 so that the cylinder 116 is always located at the center of the cell 136 regardless of the size of the cell 136 injected into the pressure chamber 110. It is formed by the alignment unit 140 to align the cell jig 120.

Here, the cell jig 120 has a shape corresponding to the cell 136, the upper surface is opened, the receiving space is formed on the inner side to accommodate the cell 136 of a predetermined size through the upper surface and the handle (on the outer side) 122) is formed. Preferably, the cell jig 120 is manufactured to be the same size as the cell 136 to be accommodated so as to accommodate only one type of cell 136. For example, when 12.1 inches are inserted into the cell jig 120, a 12.1 inch dedicated cell jig 120 is manufactured to store only the 12.1 inch cell 136 in the storage space of the cell jig 120.

Meanwhile, a metal spacer 132 ′ that buffers the force applied by the cylinder 116 and transmits a uniform force to the cell 136 is accommodated in the storage space of the cell jig 120, and an upper portion of the metal spacer 132 ′. In the process, a plurality of cells 136 to be processed are stacked, and at least one metal spacer 132 is placed on the cell 136 again. Here, between the metal spacer 132 ′ and the cell 136, between the cell 136 and the cell 136, between the cell 136 and the metal spacer 132, between the metal spacer 132 and the metal spacer 132. The rubber 134 is inserted into the rubber 134 to prevent scratches on the surface of the cell 136 due to friction.

The alignment unit 140 is disposed on the upper surface of the base metal 114 so that the cylinder 116 is always located at the center of the cell 136 into which the cylinder 116 is inserted when the cells 136 having different sizes are introduced into the pressure chamber 110. A plurality of alignment grooves 142 formed to correspond to the size of each cell 136 and an alignment bar fitted into the alignment groove 142 to limit the moving range of the cell jig 120 in which the cells 136 are accommodated. 144. Here, the plurality of alignment grooves 142 are formed at a predetermined interval such that the cylinder 116 is positioned at the center of the cell 136 regardless of the size of the cell 136.

Referring to the operation of the liquid crystal injection port sealing press equipment configured as described above is as follows.

The metal spacer 132 ′, rubber 134, cell 136, rubber 134, and metal spacer 132 are sequentially placed in the storage space of the cell jig 120, for example, a 12.1 inch dedicated cell jig 120. Laminated by.

Subsequently, when the cell jig 120 containing the 12.1 inch cell 136 is inserted into the pressure chamber 110, the alignment groove 142 is formed such that the cylinders 116 are positioned at the center of the cell 136. Insert the alignment bar 144 into the. Subsequently, the cell jig 120 containing the metal spacers 132 and 132 ′, the rubber 134, the cell 136, and the like is introduced into the pressure chamber 110, and then the cylinder 116 is placed at the center of the cell 136. ) Moves the cell jig 120 toward the alignment bar 144 so that the cylinder 116 and the cell jig 120 are aligned.

As such, when the cell jig 120 is aligned with the cylinder 116, the cylinder 116 is driven to press the metal spacer 132 at a predetermined pressure to control the height of the liquid crystal injection hole to be the same as the height of the cell gap. The cell 136 is then irradiated with ultraviolet rays to cure the ultraviolet curing agent printed on the liquid crystal injection hole to completely encapsulate the liquid crystal injection hole to prevent the liquid crystal injected between the TFT substrate and the color filter substrate from leaking out. Here, since the cylinder 116 is located at the center of the metal spacer 132, the force is uniformly transmitted to the cell 136, thereby making the cell gap uniform. In addition, when pressing the cell 136 by using the plurality of cylinders 116, the pressing force is unevenly transmitted to the cell 136 due to the mechanical difference between the cylinders 116, wherein the cell 136 and the cell ( Rubber 134 inserted between 136 or between cell 136 and metal spacer 132 buffers the non-uniform force of cylinder 116 to transfer uniform force to cell 136 to ensure uniform cell gap This is improved.

As described above, in the present invention, even if cells of different sizes are introduced into the pressurizing chamber, the cylinders are arranged in advance on the upper surface of the base metal according to the size of the cells so that the cylinder is always located at the center of the cell regardless of the size of the cells. Forming and aligning the cylinder in the center portion of the cell by inserting the alignment bar in the alignment groove has an effect that can uniformly control the cell gap.

In addition, by inserting a rubber with a large impact buffer effect between the cell and the cell, between the cell and the metal spacer, between the metal spacer and the metal spacer to cushion the force imbalance caused by the mechanical difference between the cylinders to deliver a uniform force to the cell There is an effect that the gap can be controlled uniformly.

1 is a cross-sectional view schematically showing a conventional press equipment for sealing a liquid crystal injection hole,

2 is a cross-sectional view schematically showing a press installation for sealing a liquid crystal injection hole of the present invention.

Claims (4)

A pressurizing chamber in which a process of sealing the liquid crystal injection hole is performed; A base metal installed on the lower surface of the pressure chamber to transmit a force to the cell; A cell jig disposed on the base metal and having an accommodation space for accommodating the cell and the metal spacer therein; A cylinder installed on an upper surface of the pressure chamber to press the cell accommodated in the cell jig; And an alignment portion formed inside the pressurizing chamber so that the cylinder is always located at the center of the cell irrespective of the size of the cell, thereby limiting a movement range of the cell jig. The liquid crystal injection hole of claim 1, wherein the alignment part includes alignment grooves formed according to the size of the cell on the base metal, and an alignment bar inserted into the alignment groove to limit a moving range of the cell jig. Sealing press. The liquid crystal injection hole encapsulation press according to claim 1, wherein a rubber having a high impact buffering effect is sandwiched between the cell and the cell and between the cell and the metal spacer. The liquid crystal injection hole encapsulation press according to claim 1, wherein a handle for moving the cell jig is formed outside the cell jig.