KR100372836B1 - Method for Manufacturing Liquid Crystal Display Device and Apparatus for Removing Removal Part in Liquid Crystal Display Device - Google Patents

Abstract

An object of the present invention is to provide a method for manufacturing a liquid crystal display device that can easily remove the removal portion from the liquid crystal display device using a substrate made of a thermoplastic resin. The liquid crystal display device is constructed by bonding the first and second substrates made of thermoplastic resin to each other using a sealing material. Separation lines are formed on the first substrate by the dicing method, which is half cutting, leaving a predetermined thickness so that the removal portion in the first substrate is easily removed. Compressed air is injected between the 1st board | substrate and the 2nd board | substrate which the half cutting was performed, and a removal part is lifted up. The compressed air is injected diagonally toward the liquid crystal display device. When compressed air is injected, a removal head is inserted between the removal section and the terminal area to remove the removal section.

Description

Method for Manufacturing Liquid Crystal Display Device and Apparatus for Removing Removal Part in Liquid Crystal Display Device

The present invention relates to a method for manufacturing a liquid crystal display device, in particular a method for manufacturing a plastic liquid crystal display device.

In general, a liquid crystal display element is coupled to each other as a sealing material in a bonding region disposed along the outer periphery of a pair of substrates facing each other with a predetermined gap and having electrodes for forming terminals and display electrodes. The liquid crystal is sealed in the space enclosed by to form a display part, and it has a structure which provides a terminal part outside the sealing material layer.

Within the terminal portion, an electrode to be used as a terminal is formed only on one substrate. That is, since the electrode to be used as the terminal is not formed in the substrate portion facing the terminal, it is necessary to remove the portion. This part to be removed is called a removing part and a method of removing the removing part is called a terminal exposing method.

In the case where the liquid crystal display element uses a glass substrate, a separating line is drawn out with a diamond cutting machine or the like on the upper and lower portions of the substrate under the condition that the pair of substrates are bonded to each other, and a pair of substrates are simultaneously pressed along with the separating line. The removal can be removed by separating out, which is not a difficult process.

If the substrate is made of a thermosetting resin having a thickness of about 0.4 mm, by separating the substrate having a highly sophisticated blade that rotates at high speed, as proposed in Japanese Unexamined Patent Publication JP-A 5-45617 (1993) Remove the dicing method. To remove the removal portion, the substrate of a predetermined thickness is left uncut and then torn off. Since the thermosetting resin is hard and hard, the removal portion can be removed relatively easily by tearing.

On the other hand, in the case where the liquid crystal display device uses a substrate made of a thermoplastic resin having a thickness of about 0.1 mm, a method of punching out the removing portion before joining the pair of substrates to each other has been proposed. In this method, from the alignment film side In the case where the punching out is performed, a projection may be formed on the alignment film when the fitting for punching out is removed from the substrate, and when the punching out is performed from the opposite side of the alignment film, the stage or the like closely adheres to the alignment film to prevent the alignment defect. It is not desirable because it causes. However, when the substrate has a thickness of about 0.1 mm, the influence of the projections is small.

However, when the liquid crystal display element uses a substrate made of a thermoplastic resin having a thickness larger than about 0.2 mm, the influence of the above-described protrusions becomes larger, causing an inadequate cell thickness, resulting in poor image quality. Cannot be used.

Compared to thermosetting resins, thermoplastic resins such as PES (polyether sulfone) or PC (polycarbonate) are more flexible and have higher tensile strength, making it difficult to use the tear-off method described above. Do. At this time, when the removal portion is forcibly removed, a sealing material for adhering the pair of substrates may be peeled off from the substrate. In particular, when the liquid crystal material penetrates into the terminal portion when the liquid crystal material is injected, the pair of substrates are brought into close contact with the liquid crystal material, which makes the removal of the removal portion more difficult.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for manufacturing a liquid crystal display element which can easily remove the removal portion even in a liquid crystal display element using a substrate made of a thermoplastic resin, and an apparatus for removing the removal portion from the liquid crystal display element.

The present invention,

Coupling the first substrate on which the terminal and the display electrode are formed and the second substrate on the display electrode to each other in a bonding region provided along the outer periphery of the substrates without enclosing the terminals through the sealing material so that the display electrodes face each other;

Forming a display unit by injecting a liquid crystal material into a space surrounded by the sealing material and the substrate;

Providing a half cut line along a boundary of a removal portion opposite a terminal on a portion of the first substrate that is part of the second substrate and that is outside of the sealing material; And

A method of manufacturing a liquid crystal display device comprising exposing a terminal by removing a removal portion along the half cutting line.

A method of manufacturing a liquid crystal display device is provided by lifting compressed air along a half cut line by injecting compressed air between a first substrate portion having a terminal and a removed portion.

According to the manufacturing method of the liquid crystal display element of the present invention, a half cutting line is formed on the second substrate, and the removal of the removal portion injects compressed air between the first substrate portion where the terminal is formed and the removal portion which is part of the second substrate. Is started by. Thereby, it is possible to lift the removal portion along the half cut line, and at the same time scatter the liquid crystal material penetrating into the terminal portion when the liquid crystal material is injected. Thus, the first and second substrates can be prevented from coming into close contact with each other by the liquid crystal material.

In the method of the present invention, it is preferable to completely remove the removing portion by inserting the removing portion removing means between the first substrate portion where the terminal is formed and the removing portion.

According to the present invention, the removing portion removing means is inserted between the first substrate portion where the terminal is formed and the removing portion, and the removing portion removing means can be easily removed by lifting the removing portion so that compressed air can lift the removing portion. have. At this time, since the removal portion is lifted by the compressed air, the removal portion removal means can be easily inserted between the first substrate and the removal portion.

In the method of the present invention, the compressed air is preferably sprayed diagonally toward the liquid crystal display instead of the direction opposite to the insertion of the removal unit removal means.

According to the present invention, by pressing the compressed air diagonally toward the liquid crystal display element instead of the insertion direction of the removing portion removing means, the compressed air is injected diagonally from the rear of the removing portion removing means so that the removing portion removing means is compressed air. The removal unit can be removed with the aid of.

In the method of the present invention, the first and second substrates are preferably made of thermoplastic resin.

According to the present invention, even when the first and second substrates are made of a thermoplastic resin, the removal portion can be easily removed.

In the method of the present invention, it is preferable to spray the compressed air under conditions in which at least a portion of the sealing material layer formed around the semi-cut line is compressed.

According to the present invention, in the method of manufacturing a liquid crystal display device, the liquid crystal display device is fixed while blowing compressed air by pressing a portion of the liquid crystal display device provided with a layer of sealing material around the half cutting line. Thereby, the display surface of the liquid crystal display element is not pressurized and does not impair the image quality of the liquid crystal display element, and the sealing material can be prevented from being peeled off from the substrate while the removal portion is removed.

The present invention provides a method of manufacturing a semiconductor device comprising: providing a first substrate on which a terminal and a display electrode are formed and a second substrate on which a display electrode is formed; Coupling the first substrate and the second substrate to each other in a bonding region provided along the outer periphery of the substrates without enclosing the terminals through the sealing material so that the display electrodes face each other; Forming a display unit by injecting a liquid crystal material into a space surrounded by the sealing material and the substrate; Providing a half cut line along a boundary of a removal portion opposite a terminal on a portion of the first substrate that is part of the second substrate and that is outside of the sealing material; And removing the removing portion along the half cutting line, thereby exposing the terminal to remove the removing portion of the liquid crystal display device manufactured by the method.

Means for adsorbing a liquid crystal display element on the adsorption stage; And

Provided is a removal unit removal device for a liquid crystal display device including means for supplying compressed air between the removal unit and a first substrate of the liquid crystal display device.

According to the present invention, the removing portion removing device is a portion facing the terminal in the second substrate from the liquid crystal display element formed by sealing the liquid crystal material between the display electrode and the first substrate on which the terminal is formed and the second substrate on which the display electrode is formed. Remove the phosphorus remover. For this reason, the removal part removal apparatus adsorb | sucks a liquid crystal display element to an adsorption stage after a half cutting line is provided along the removal part boundary on a 2nd board | substrate, and supplies compressed air between a removal part and a 1st board | substrate. As a result, the liquid crystal material penetrated between the removal portion and the first substrate can be scattered by lifting the removal portion by compressed air, and the terminal can be exposed reliably and easily.

In the apparatus of the present invention, it is preferable to further include fixing means for fixing the second substrate of the liquid crystal display element.

According to the present invention, the removal unit removal device may fix the liquid crystal display by further using fixing means for fixing not only the adsorption stage but also the second substrate during the injection of the compressed air. For this reason, the removal part removal apparatus can lift only a removal part by using compressed air.

In the apparatus of the present invention, it is preferable that the apparatus further includes a removal head for contacting the removing portion to remove the removing portion from the liquid crystal display element.

According to the invention, the removal part removal device removes the removal part by using the removal head as well as the compressed air. Since the removal portion is lifted by the compressed air, it is possible to easily insert the removal head between the removal portion and the first substrate so as to contact only the removal portion. For this reason, the removal part removal apparatus can reliably remove a removal part, without damaging a terminal.

1A to 1C are explanatory diagrams showing a terminal exposing step according to the present invention;

2A to 2C are explanatory views showing a method of fixing the liquid crystal display element when the removal unit is removed;

3a and 3b are explanatory diagrams showing a method for lifting the removal unit;

4 is a side view illustrating a method in which the liquid crystal display is peeled from the adsorption step when the pressure of the compressed air is high;

5 is a plan view showing a method of injecting compressed air while moving the adsorption stage;

6a to 6d are plan views illustrating a method of removing the removal unit by a removal head;

7 is a perspective view obtained by the enlargement of FIGS. 6A-6D,

8 is a perspective view of FIG. 7 viewed from another direction;

9 is an explanatory diagram showing an example of an apparatus used in a process for removing a removing unit; and

10 is an explanatory diagram showing another example of an apparatus used in a process for removing a removing unit.

Hereinafter, with reference to the drawings will be described a preferred embodiment of the present invention.

The terminal exposing method according to the present invention will be briefly described with reference to FIGS. 1A to 1C. 1A to 1C are views for explaining a terminal exposing method according to the present invention.

As shown in Fig. 1A, the liquid crystal display device is formed by using a sealing material 3 for the first substrate 1 and the second substrate made of thermoplastic resin such as PES or PC having a thickness of about 0.2 to 0.5 mm. 1), the 2nd board | substrate 2 and the sealing material 3 are comprised so that it may bond so that they may mutually seal. Here, the display surface of a liquid crystal display element is shown by (4), and the terminal area | region in which the terminal was formed is shown by (5). Although not shown, a display electrode, an alignment film, and the like as well as a terminal are already formed on each substrate before the method of adhering the substrates to each other. In addition, the present invention can also be applied to manufacturing a plurality of liquid crystal display elements from a pair of substrates.

In addition, as shown in FIG. 1B, the removal unit 7 cuts the first substrate along the boundary of the removal unit 7, leaving only a predetermined thickness through a dicing method (hereinafter referred to as a half cut). It is set in such a way that it can be easily removed to form the trench-shaped half cutting line 6 on the first substrate 1.

1C shows that the terminal region 5 is exposed after removing the removal portion 7. Here, the remaining part of the half cutting line is represented by (8). That is the terminal exposure method.

Next, the terminal exposure method will be described in detail with reference to FIGS. 2 to 10. The removal method of the removal unit 7 shown in FIG. 1C will be described in detail below.

As shown in Figs. 2A to 2C, the liquid crystal display element subjected to the half cutting is adsorbed and fixed on the adsorption stage 10 of the removal part separation device. The adsorption stage 10 may be a porous plate or a plate having adsorption holes. A fixing stick for fixing the liquid crystal display device is indicated by (9).

Here, as shown in the side view of Fig. 2B and the top view of Fig. 2C, the end face 9 of the adsorption stage and the end face of the liquid crystal display element are preferably aligned well. When the cross section of the liquid crystal display element is recessed in the cross section of the adsorption stage, the compressed air may diffuse from the cross section of the adsorption stage 10 after the compressed air is injected, so that the removal unit 7 cannot be sufficiently lifted. do. On the contrary, when the cross section of the liquid crystal display element protrudes from the cross section of the adsorption stage 10, the compressed air may act as a force to separate the liquid crystal display element from the adsorption stage 10 after the compressed air is injected. Therefore, the removal unit 7 cannot be lifted sufficiently.

The fixing rod 9 of the removal unit removal device is arranged to press the portion where the sealing material layer 3 is formed to fix the liquid crystal display element without pressing the display surface 4. As a result, the sealing material 3 is removed from the substrate while the removal portion 7 is removed while simultaneously preventing the inferior cell thickness or orientation defect caused by pressing the display surface from occurring, thereby damaging the display quality of the liquid crystal display element. To prevent it from peeling off.

Further, as shown in Figs. 3A to 3B, the compressed air 12 is injected from the blower 11 of the removal unit removal device between the first substrate and the removal unit. The compressed air 12 is preferably injected at a pressure of about 3 to 5 kg / cm 2. By this pressurized air 12, the removal part 7 can be lifted, and when the liquid crystal material is injected, the liquid crystal material penetrated between the removal part and the first substrate can be scattered.

As shown in FIG. 4, in order to adjust the pressure of the compressed air 12, an adjustment device 13 may be provided in the middle of the pipe 14 for supplying air to the blower 11 to arbitrarily change the pressure of the injection air. Make sure If the degree of lifting the removal unit 7 is inappropriate, the pressure is raised by the adjusting device 13. As shown in FIG. 4, in the case where the pressure of the compressed air 12 exceeds the pressure of the fixed rod 9 and the adsorption force of the adsorption stage 10, and the liquid crystal display element is peeled off from the adsorption stage 10, the adjusting device. The pressure is lowered by (13).

As shown in Fig. 5, when the compressed air 12 is injected, it is preferable to inject the compressed air 12 from the blower 11 while the adsorption stage 10 moves in the movement direction indicated by the arrow. In this way, the compressed air is injected in the direction of movement 15 of the adsorption stage 10, that is, in a diagonal direction with respect to the liquid crystal display element.

6A to 6D, as shown in FIGS. 7 and 8, when ejecting the compressed air 12, the removal head (removal removal) tapering off from the side between the removal portion 7 and the terminal region 5. It is preferable to remove the removal part 7 by inserting means.

Even while the removal head 16 is inserted between the removal portion 7 and the terminal region 5, the compressed air 12 is ejected from the blower 11 to lift the removal portion. Here, the removal head 16 is set not to contact the terminal since the terminal may be damaged when the removal head 16 is brought into contact with the terminal. According to this embodiment, the gap with the terminal is set to 0.1 mm.

In this way, the removal unit removal device completely removes the removal unit 7 by the removal head 16 by compressed air 12 being blown from the blower 11 and lifting the removal unit 7. Since the removal portion 7 is lifted by the compressed air, the removal head 16 can be easily inserted between the removal portion 7 and the terminal region 5.

By spraying the compressed air 12 diagonally toward the liquid crystal display element instead of the direction opposite to the insertion direction of the removal head 16, the compressed air 12 is sprayed diagonally from the rear of the removal head 16 to remove the removal head. 16 may remove the removal portion with the aid of the compressed air.

The method of removing the removal unit 7 by the terminal exposing method as described above may be arranged in a circular shape as shown in FIG. 9 or may be arranged in a linear shape as shown in FIG. 10. This arrangement may be bent in an L-shape in any manner, or may be arranged in a T-shape or polygonal or two-layer form.

An example of the removal method of the removal part 7 is demonstrated with reference to FIG. First, in step s1, the liquid crystal display device is aligned by moving in the movement direction 15 according to the rotational direction of the device. Then, in the step s2, the liquid crystal display device is fixed by the fixing rod 9. Next, while moving from the step s3 to the step s4, the compressed air 12 is injected from the blower 11 disposed around the circle. At this time, the direction in which the compressed air 12 is injected is regarded as the direction between the 3 o'clock and 6 o'clock directions on the clock face when the moving direction 15 of the liquid crystal display element is regarded as the 12 o'clock direction. During the movement from step s4 to step s6, the removal portion is completely removed from the liquid crystal display element by the removal head 16, during which the compressed air 12 is continuously injected to the liquid crystal display element.

In step s5, the removal part 7 is removed completely and the terminal is exposed in this condition. Next, the condition for removing the removal unit 7 is confirmed in step s6, and when the removal unit 7 is completely removed, the adsorption by the fixed and adsorption stage 10 by the fixed rod 9 in step s7. After releasing, the liquid crystal display device is pulled out of the apparatus. If the removal unit 7 remains in step s6, the flow returns to the step s1 through the buffer step s8.

Another example of the removal method of the removal unit 7 will be described next with reference to FIG. First, in the step s1, the liquid crystal display device is disposed to move in the moving direction 15 indicated by the arrow, and then the liquid crystal display device is sucked and fixed. In the step s2, the liquid crystal display device is fixed by the fixing rod 9. Then, while the liquid crystal display moves from step s3 to step s4, compressed air 12 is injected from the blower 11 arranged along the moving direction 15. The liquid crystal display moves from step s4 to step s6. In the meantime, the removing part 7 is completely removed from the liquid crystal display element by the removing head 16, during which the compressed air 12 is continuously injected into the liquid crystal display element.

In step s6, the removal unit 7 is completely removed and the terminal is exposed. Next, the conditions for removing the removal unit 7 are confirmed in step s6, and in the case of the removal unit 7 is completely removed, in step s7, adsorption by the fixing and adsorption stage 10 by the fixing rod 9 is performed. After releasing, the liquid crystal display is pulled out of the device. If the removal unit 7 remains in step s6, the flow returns to the step s1 through the buffer step s8.

As described above, according to the manufacturing method of the liquid crystal display device according to the present invention, the terminal exposure method of the liquid crystal display device using a substrate made of a thermoplastic resin, in particular a thermoplastic resin of about 0.2mm to 0.5mm thick, which was difficult to use conventionally Can be run easily.

The invention may be embodied in other specific forms of embodiment without departing from its spirit and its main characteristics. Therefore, the present embodiment is for illustrative purposes only and is not limited thereto. The scope of the present invention is indicated by the appended claims and is not limited by the specification. All modifications belonging to the equivalent scope of the claims are within the scope of the present invention. Belong.

Claims (8)

Coupling the first substrate on which the terminal and the display electrode are formed and the second substrate on the display electrode to each other in a bonding region provided along the outer periphery of the substrates without enclosing the terminals through the sealing material so that the display electrodes face each other; Forming a display unit by injecting a liquid crystal material into a space surrounded by the sealing material and the substrate; Providing a half cut line along a boundary of a removal portion opposite a terminal on a portion of the first substrate that is part of the second substrate and that is outside of the sealing material; And A method of manufacturing a liquid crystal display device comprising exposing a terminal by removing a removal portion along the half cutting line. A method of manufacturing a liquid crystal display device, characterized in that the removal portion is lifted along the half cut line by blowing compressed air between the first substrate portion where the terminal is formed and the removal portion. The method for manufacturing a liquid crystal display device according to claim 1, wherein the removal portion is completely removed by inserting the removal portion removal means between the first substrate portion where the terminal is formed and the removal portion. The liquid crystal display device manufacturing method according to claim 2, wherein the compressed air is sprayed in a diagonal direction toward the liquid crystal display device instead of the insertion opposite direction of the removal unit removing means. The liquid crystal display device manufacturing method according to claim 1, wherein the first substrate and the second substrate are made of thermoplastic resin. The method for manufacturing a liquid crystal display device according to claim 1, wherein compressed air is blown under conditions in which at least a portion of the sealing material layer is formed around the half cutting line. Providing a first substrate having a terminal and a display electrode formed thereon and a second substrate having a display electrode formed thereon; Bonding the first substrate and the second substrate to each other in a bonding region provided along the outer periphery of the substrates without enclosing the terminals through the sealing material so that the display electrodes face each other; Forming a display unit by injecting a liquid crystal material into a space surrounded by the sealing material and the substrate; Providing a half cut line along a boundary of a removal portion opposite a terminal on a portion of the first substrate that is part of the second substrate and that is outside of the sealing material; And removing the removing portion along the half cutting line, thereby exposing the terminal, wherein the removing portion removing apparatus of the liquid crystal display device manufactured by the method comprises: Means for adsorbing a liquid crystal display element on the adsorption stage; And And a means for supplying compressed air between the removal portion of the liquid crystal display element and the first substrate. 7. The apparatus of claim 6, further comprising a fixing means for fixing the second substrate of the liquid crystal display element. 8. The removal unit removal apparatus of claim 7, further comprising a removal head which contacts the removal unit and removes the removal unit from the liquid crystal display.