Patent Publication Number: US-2010120318-A1

Title: Method of assembling lcd panel, interface apparatus, and assembling apparatus

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     This invention relates to a method of assembling an LCD panel, an interface apparatus, and an assembling apparatus, and more particularly to a method of assembling an LCD panel, an interface apparatus, and an assembling apparatus which can be applied to assemble a display panel. 
     2. Description of the Related Art 
     The manufacturing processes of a liquid crystal display (LCD) includes the steps of forming a color filter film and an array of switch elements, such as a Thin-Film Transistor (TFT), on a glass substrate, aligning, configuring sealants, sealing liquid crystals between two panels, installing an IC driver, and installing a back light unit. 
     During the sealing of the liquid crystals, one method is to paste two panels with a sealant and then let the sealant harden. Afterwards, the inlet between the two panels is immersed with the liquid crystals in a vacuum chamber, so that the liquid crystals will be injected between the two panels because of pressure differences and capillarity, which are known as the vacuum impregnation method. 
     Recently, the related community is paying attention to a method which is to drip liquid crystals with regular quantity on an array panel and make the array panel paste a corresponding panel to each other, which is known as the One Drop Filling (ODF) method. Compared with the vacuum impregnation method, the ODF method has advantages such as greatly shortening the injection time of liquid crystals and reduces the usage of liquid crystals, as has been disclosed in U.S. Pat. No. 4,691,995 and U.S. Pat. No. 5,263,888. 
     However, during the processes of the ODF method, it is important to holding the panels in a vacuum. With the trend of continually enlarging panel sizes (the size an 8 th  generation panel is almost four times of the 5 th  generation panel), it is important to support and flatly attach the panels. 
     Among the existing approaches, a first panel is mainly supported from its bottom by a robot arm (or is attached from its top) to enter a vacuum chamber, a carrying shaft which stretches out from a second press block carries the bottom of the first panel, and the robot arm then exits out of the vacuum chamber. Subsequently, a first press block will come down and attach to the top of the first panel, as has been disclosed in ROC Publication Patent Number 00594297, ROC Patent Number 1257515, and ROC Patent Number 1232418. 
     Moreover, a panel with a larger size is easy to become deformed, so the panel can not be attached upward only with a static electricity sucker. Instead, the surface of the panel must be quite flatly attached to the static electricity sucker by a vacuum cup or other auxiliary approach, to drive the static electricity sucker to attach the top of the panel. Afterward, a second panel is loaded into the vacuum chamber, and steps such as vacuuming and pressing are performed, as been disclosed in ROC Publication Patent Number 00594297, ROC Patent Number 1257515, and ROC Patent Number 1228183. 
     However, conversely, the above-mentioned devices which assist the panel to be flatly attached increase the complexity in the vacuum chamber, which not only increase the cost of the assembling equipment, but also raise the probability of failure and demands of repair. Furthermore, because the above-mentioned steps are performed in the vacuum chamber, the cycle time will also increase. Vacuum assembling is a key step in the processes of the ODF method, so the increased cycle time is unfavorable to increase the production capacity. A bigger problem is how to quickly and uniformly release static electricity adsorption force after the first panel assembles to the second panel. The problem is not only an important factor which will influence the alignment precision, but also a big challenge to the processes over and above the 8 th  generation. Presently, the alignment precision specification of the vacuum pressing equipment over and above 8 th  generation still has space to be improved, so the alignment precision specifications of the 8 th  generation provided by all equipment suppliers are looser than that of the 5 th  generation. 
     Accordingly, the major scope of the invention is to provide a method of assembling an LCD panel, an interface apparatus, and an assembling apparatus. Particularly, with the method of assembling an LCD panel, the interface apparatus, and the assembling apparatus, the following benefits/advantages can be achieved: (1) the complexity of the assembly room can be simplified and the cycle time in the assembly room can be shortened by moving the processes of flatly attaching and separating panels out of the assembly room, and the gravity of the panel is helpful for the panel to be flatly attached on an interface apparatus; (2) the interface apparatus, which can provide enough stiffness and be an interface for a robot arm to hold or unload, is easier to be processed than a glass substrate during operation; (3) the design of the interface apparatus, which can keep the first panel over the second panel a certain height without mounting the first panel on the upper press block, can simplify the mechanisms in the assembly room and shorten the cycle time; and (4) the action of rapidly releasing static electricity suckers can be prevented during the assembly processes in the assembly room because of the usage of the interface apparatus, such that the alignment error caused by nonsynchronization of releasing static electricity suckers can be reduced. 
     SUMMARY OF THE INVENTION 
     A scope of the invention is to provide a method of assembling an LCD panel. Firstly, the method of assembling an LCD panel according to the invention is performed to mount a first panel on an interface apparatus, to form a first panel assembly. Then, the method of assembling an LCD panel according to the invention is performed to input a second panel and the first panel assembly into an assembly room. Next, the method of assembling an LCD panel according to the invention is performed to mount the second panel on a lower press block. Afterward, the method of assembling an LCD panel according to the invention is performed to support the interface apparatus, to keep the first panel over the second panel. Subsequently, the method of assembling an LCD panel according to the invention is performed to press the first panel to the second panel. Then, the method of assembling an LCD panel according to the invention is performed to output the first panel assembly which is pressed with the second panel from the assembly room. Finally, the method of assembling an LCD panel according to the invention is performed to separate the first panel from the interface apparatus. 
     Another scope of the invention is to provide an interface apparatus. The interface apparatus can be used to assemble a first panel and a second panel in an assembly room. The second panel is mounted in the assembly room. The interface apparatus includes a panel-mounting interface and an actuating interface. The panel-mounting interface can be used to mount the first panel. The actuating interface can be used to bear an external force to make the interface apparatus move relative to the second panel. 
     Another scope of the invention is to provide an assembling apparatus. The assembling apparatus can be used to assemble a first panel and a second panel. The assembling apparatus mainly includes an assembly room and a lower press block. The assembly room includes a panel actuating device and an air pressure control device. The air pressure control device can be used to control the air pressure in the assembly room. The lower press block is disposed in the assembly room. The lower press block includes a panel-mounting interface and an adjusting device. The panel-mounting interface can be used to mount the second panel. The adjusting device can be used to adjust the position of the second panel. Wherein, the panel actuating device makes the first panel move relative to the second panel to press the first panel with the second panel mounted on the lower press block. 
     Accordingly, the method of assembling an LCD panel, the interface apparatus, and the assembling apparatus according to the invention can achieve the advantages of simplifying the complexity of the assembly room, shortening the cycle time in the assembly room, and flatly attaching the panel on the interface apparatus with the assistance of the gravity of the panel. 
     The advantage and spirit of the invention may be understood by the following recitations together with the appended drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE APPENDED DRAWINGS 
         FIG. 1  is a flow chart showing the method of assembling an LCD panel according to the invention. 
         FIG. 2  is a side view illustrating the interface apparatus according to the invention. 
         FIG. 3A  to  FIG. 3K  are schematic diagrams illustrating the method of assembling an LCD panel while assembling according to a first embodiment of the invention. 
         FIG. 4A  and  FIG. 4B  are side views illustrating the interface apparatus according to the first embodiment of the invention. 
         FIG. 5  is a schematic diagram illustrating the method of assembling an LCD panel while assembling according to a fourth embodiment of the invention. 
         FIG. 6  is a side view illustrating the interface apparatus according to the fourth embodiment of the invention. 
         FIG. 7  is a schematic diagram illustrating the method of assembling an LCD panel while assembling according to a fifth embodiment of the invention. 
         FIG. 8  is a side view illustrating the interface apparatus according to the fifth embodiment of the invention. 
         FIG. 9  is a schematic diagram illustrating the method of assembling an LCD panel while assembling according to a sixth embodiment of the invention. 
         FIG. 10  is a side view illustrating the interface apparatus according to the sixth embodiment of the invention. 
         FIG. 11  is a side view illustrating the interface apparatus according to a seventh embodiment of the invention. 
         FIG. 12A  is a cross-sectional view illustrating that the interface apparatus according to a ninth embodiment of the invention is operated in the assembling apparatus, wherein the assembling apparatus has not been pressed yet. 
         FIG. 12B  is a cross-sectional view illustrating that the interface apparatus in  FIG. 12A  is operated in the assembling apparatus, wherein the assembling apparatus has been pressed. 
         FIG. 13A  is a cross-sectional view illustrating that the interface apparatus according to a tenth embodiment of the invention is operated in the assembling apparatus, wherein the assembling apparatus has not been pressed yet. 
         FIG. 13B  is a cross-sectional view illustrating that the interface apparatus in  FIG. 13A  is operated in the assembling apparatus, wherein the assembling apparatus has been pressed. 
         FIG. 13C  is a cross-sectional view illustrating that the interface apparatus is operated in the assembling apparatus according to another embodiment. 
         FIG. 14  is a flow chart showing the method of assembling an LCD panel according to the ninth embodiment of the invention. 
         FIG. 15  is a flow chart showing the method of assembling an LCD panel according to the tenth embodiment of the invention. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     The purpose of the invention is to provide a method of assembling an LCD panel, an interface apparatus, and an assembling apparatus which can achieve the advantages of simplifying the complexity of the assembly room, shortening the cycle time in the assembly room, and flatly attaching the panel on the interface apparatus with the assistance of the gravity of the panel. The preferred embodiments of the invention are described below to illustrate the features and spirits of the invention. 
     The method of assembling an LCD panel includes following steps: 
     Step S 100 : mounting a first panel to an interface apparatus; 
     Step S 102 : inputting a second panel which has been dripped liquid crystal and the first panel which is mounted to the interface apparatus into an assembly room; 
     Step S 104 : mounting the interface apparatus which connects the first panel and the second panel to a first press block and a second press block respectively; 
     Step S 106 : aligning and pressing the first panel and the second panel; 
     Step S 108 : outputting the first panel and the second panel which are assembled to the interface apparatus out of the assembly room; and 
     Step S 110 : separating the interface apparatus from the first panel. 
     Wherein, the mounting approach in step S 100  can be performed with main approaches such as adhering or static electricity attaching or auxiliary approaches such as vacuum attaching or mechanical holding. The main approach of adhering is performed to make the first panel and the interface apparatus adhere to each other with an adhesion layer, and the adhesion layer is elastic. The adhesion layer can be a thermal separation film and/or a radial separation film. The main approach of static electricity attaching is performed to place an elastic layer between the first panel and the interface apparatus. In the main approach of static electricity attaching, the interface apparatus is powered by an external power supply to make the interface apparatus and the first panel attach to each other. After the interface apparatus is inputted in the assembly room and mounted to the first press block, the interface apparatus can be powered by the first press block, and the external power supply can be shut down, to make the interface apparatus and the first panel static electricity attach to each other. Wherein, step S 100  further includes the step of disposing a sealant to the first panel. 
     Step S 102  further includes the step of disposing a sealant to the second panel. 
     Step S 104  which is performed to mounting the interface apparatus to the first press block is achieved by the approaches such as static electricity attaching, electromagnetic attaching, locking, or mechanical holding. 
     Step S 106  further includes the step of lowering the air pressure in the assembly room, the step of approaching the first panel to the second panel gradually and pressing, and the step of separating the first press block from the interface apparatus after the sealant is temporarily hardened and the air pressure returns to the atmosphere. Another workable approach is that step S 106  further includes the precisely aligning step of approaching the first panel to the second panel up to a tiny distance (such as 100˜200 μm) gradually, and the step of precisely aligning further includes the step of releasing the attachment the first press block applies to the interface apparatus to separate the interface apparatus from the first press block. The step of releasing the attachment the attachment the first press block applies to the interface apparatus which can also include the step of applying a force (such as a reverse magnetic force, an air force, or an elastic force) from the first press block to the interface apparatus to separate the interface apparatus from the first press block. The step of releasing the attachment to the interface apparatus to separate the interface apparatus from the first press block further includes the steps of returning the air pressure to the atmosphere after temporarily hardening the sealant. 
     Step S 108  further includes the step of releasing the viscosity of the adhesion layer between the first panel and the interface apparatus with a heating step, the step of releasing the static electrical attachment between the first panel and the interface apparatus, or the step of releasing the vacuum attachment or mechanical holding between the first panel and the interface apparatus. Step S 108  can also include the step of permanently hardening the sealant. 
     The interface apparatus according to the invention includes: a main body  1  of the interface apparatus; a panel interface  11  which is disposed at one side of the main body  1  of the interface apparatus; and a first press block interface  12  which is disposed at another side of the main body  1  of the interface apparatus. Wherein, an adhesion layer is disposed to the panel interface  11 . The adhesion layer can be a thermal separation film and/or a radial separation film. Or, a main device such as a static electricity attaching device, a vacuum attachment device or an auxiliary device such as a mechanical holding device can be disposed to the panel interface  11 , and an elastic layer is further disposed to the panel interface  11 . Wherein, the first press block interface  12  has magnetoconductivity, or a magnetic device, a static electrical attachment interface, at least locker, a locking interface, a holding mechanism, or a mechanical holding interface is disposed to the first press block interface  12 . 
     First Embodiment 
     The method of assembling an LCD panel is performed by the following steps:
         (1) adhering the first panel  2  on the main body  1  of the interface apparatus with a thermal separation film  111  which is elastic before entering the vacuum assembly room and then turning the first panel  2  over, as shown in  FIG. 3A  to  FIG. 3C ;   (2) transporting (simultaneously or one by one) the second panel  3  which has been applied sealant  31  and dripped liquid crystal and the first panel  2  which is mounted to the main body  1  of the interface apparatus into a vacuum assembly room  4 , as shown in  FIG. 3D  to  FIG. 3E ; (Meanwhile, because the interface apparatus can provide enough stiffness, it is easier to be operated than a glass substrate and can solve the problems of inputting, carrying, and flatly attaching caused by the much bigger panel after the 8 th  generation.)   (3) mounting the second panel  3  to the second press block  52  with a traditional approach, and electromagnetically attaching the main body  1  of the interface apparatus connected with the first panel  2  by the first press block  51 , as shown in  FIG. 3F .   (4) vacuuming and aligning are performed, approaching the first panel  2  to the second panel  3  to align and to be pressed, temporarily hardening the sealant  31 , and then returning the air pressure to the atmosphere, as shown in  FIG. 3G  to  FIG. 3H ; moreover, releasing the electromagnetic attachment the first press block  51  applies to the main body  1  of the interface apparatus, as shown in  FIG. 3I .   (5) outputting the first panel  1  and the second panel  3  which are mounted to the main body  1  of the interface apparatus after assembling out of the assembly room  4 , as shown in  FIG. 3J ; and   (6) heating the sealant  31  to be hardened and separating the main body  1  of the interface apparatus from the first panel  2  of the assembled first panel  2  and the second panel  3  (because the viscosity of the thermal separation film  111  will disappear after being heated to a certain temperature), as shown in  FIG. 3K .       

     The first embodiment of the interface apparatus includes (as shown in  FIG. 4A  and  FIG. 4B ): an main body  1  of the interface apparatus; a panel interface  11  which is disposed at one side of the main body  1  of the interface apparatus; and a first press block interface  12  which is disposed at another side of the main body  1  of the interface apparatus. Wherein, a thermal separation film  111  is disposed to the panel interface  11 . Wherein, the first press block interface  12  has magnetoconductivity, or a magnetic device  121  is disposed to the first press block interface  12 . 
     Second Embodiment 
     The difference between the second embodiment and the first embodiment of the method of assembling an LCD panel is that step (4) can be changed as: releasing the electromagnetic attachment the first press block  51  applies to the main body  1  of the interface apparatus or further applying a reverse magnetic force after approaching the first panel  2  to the second panel  3  up to a tiny distance (such as 100˜200 μm) gradually, so as to separate the main body  1  of the interface apparatus from the first press block  51 , to attach the first panel  2  to the second panel  3 , to temporarily harden the sealant  31 , and then to return the air pressure to the atmosphere. 
     Third Embodiment 
     The difference between the third embodiment and the first embodiment of the method of assembling an LCD panel is that the step of applying and releasing the electromagnetic attachment in step (3) can be changed as applying and releasing an static electrical attachment, wherein the first press block interface  12  of the interface apparatus can be static electrically attached. 
     Fourth Embodiment 
     The difference between the fourth embodiment and the first embodiment of the method of assembling an LCD panel is that step (1) can be changed as: static electrically attaching the first panel  2  with the main body  1  of the interface apparatus and then turning over before the first panel  2  enters the vacuum assembly room  4 . Step (3) can be changed as: mounting the second panel  2  to the second press block  52  with a traditional approach, and mounting the main body  1  of the interface apparatus which is connected with the first panel  2  to the first press block  51  with a locker  122 . Step (4) can be changed as: vacuuming, aligning, approaching the first panel  2  to the second panel  3  gradually, and separating the locker  122  on the interface apparatus from the first press block  51  after aligning, pressing, hardening the sealant, and returning the air pressure to the atmosphere. Besides the step of permanently hardening the sealant, step (6) can be changed as: releasing the static electrical attachment between the first panel and the interface apparatus, to separate the main body  1  of the interface apparatus from the first panel  2  of the assembled first panel  2  and the second panel  3 . 
     As shown in  FIG. 6 , the difference between the fourth embodiment and the first embodiment of the interface apparatus is that a static electricity attaching device  112  is disposed to the panel interface  11  in the fourth embodiment, and at least one locker  122  is disposed to the first press block interface  12 . 
     Fifth Embodiment 
     The difference between the fifth embodiment and the first embodiment of the method of assembling an LCD panel is that step (1) can be changed as: attaching the first panel  2  to the main body  1  of the interface apparatus with a main approach of static electrically attaching and an auxiliary approach of vacuum attaching and then turning over before the first panel  2  enters the vacuum assembly room  4 . The auxiliary approach of vacuum attaching can be removed from any of the subsequent steps if necessary, and step (3) can be changed as: mounting the second panel  3  to the second press block  52  with a traditional approach and mounting the main body  1  of the interface apparatus which is connected with the first panel  2  to the first press block  51  with a holding mechanism  511 , as shown in  FIG. 7 . Step (4) can be changed as: vacuuming, aligning, approaching the first panel  2  to the second panel  3  gradually, and releasing the holding mechanism  511  to separate the interface apparatus from the first press block  51  after aligning, pressing, hardening the sealant, and returning the air pressure to the atmosphere. Besides the step of permanently hardening the sealant, step (6) can be changed as: releasing the static electrical attachment and the vacuum attachment between the first panel and the main body  1  of the interface apparatus, to separate the main body  1  of the interface apparatus from the first panel  2  of the assembled first panel  2  and the second panel  3 . 
     As shown in  FIG. 8 , the difference between the fifth embodiment and the first embodiment of the interface apparatus is that the panel interface  11  is a static electrical attaching interface in the fifth embodiment, a vacuum attaching device  113  is disposed to the static electrical attaching interface, and a mechanical holding interface  123  which can be held by the holding mechanism  511  is disposed to the first press block interface  12 . 
     Sixth Embodiment 
     The difference between the sixth embodiment and the first embodiment of the method of assembling an LCD panel is that step (1) can be changed as: attaching the first panel  2  to the main body  1  of the interface apparatus with a main approach of static electrically attaching and an auxiliary approach of mechanically holding and then turning over before the first panel  2  enters the vacuum assembly room  4  (as shown in  FIG. 9 ). The auxiliary approach of mechanically holding can be removed from any of the subsequent steps if necessary. Step (6) can be changed as: releasing the static electrical attachment between the first panel and the main body  1  of the interface apparatus, to separate the main body  1  of the interface apparatus from the first panel  2  of the assembled first panel  2  and the second panel  3 . 
     As shown in  FIG. 10 , the difference between the sixth embodiment and the first embodiment of the interface apparatus is that the panel interface  11  is a static electrical attaching interface in the fifth embodiment and a holding mechanism  114  is disposed to the static electrical attaching interface. 
     Seventh Embodiment 
     As shown in  FIG. 11 , the difference between the seventh embodiment and the forth embodiment of the interface apparatus is that the static electricity attaching device  112  of the seventh embodiment is further connected with an elastic layer  115 . When the static electricity interface attaches the first panel  2 , the elastic layer  115  can make the first panel  2  and the second panel  3  level and parallel to each other. 
     Eighth Embodiment 
     The difference between the eighth embodiment and the first embodiment of the method of assembling an LCD panel is that in the eighth embodiment, the second panel is attached to another interface apparatus without turning over, and the second panel is electromagnetically attached to the second press block and then is pressed with the first panel. 
     Nine Embodiment 
     Please refer to  FIGS. 12A and 12B .  FIG. 12A  is a cross-sectional view illustrating that the interface apparatus  7  according to a ninth embodiment of the invention is operated in the assembling apparatus  6 , wherein the assembling apparatus  6  has not been pressed yet.  FIG. 12B  is a cross-sectional view illustrating that the interface apparatus  7  in  FIG. 12A  is operated in the assembling apparatus  6 , wherein the assembling apparatus  6  has been pressed. The ninth embodiments of the invention are described below to illustrate the features and spirits of the invention. 
     As shown in  FIG. 12A , the assembling apparatus  6  and the interface apparatus  7  are used to assemble the first panel  2  and the second panel  3 . The assembling apparatus  6  includes an assembly room  60  and a lower press block  62 . The assembly room  60  includes a linear motion device  600  and an air pressure control device (not shown). The air pressure control device can be used to control the air pressure in the assembly room  60 . The lower press block  62  is disposed in the assembly room  60 . The lower press block  62  includes a panel-mounting interface  620  and an adjusting device  622 . The panel-mounting interface  620  can be used to mount the second panel  3 . The adjusting device  622  can be used to adjust the position of the second panel  3 . 
     As shown in  FIG. 12A , the interface apparatus  7  is mainly used to assemble the first panel  2  and the second panel  3  in the assembly room  60  of the assembling apparatus  6 . The interface apparatus  7  includes a panel-mounting interface  700  and an actuating interface  702 . The panel-mounting interface  700  can be used to mount the first panel  2 . The actuating interface  702  can serve as a carrying interface of a transportation device (not shown) to make the interface apparatus  7  get in and out of the assembly room  60  and bear an external force to make the interface apparatus  7  moves relative to the second panel  3 . In the ninth embodiment, the external force is generated by the linear motion device  600 . Thereby, the external force generated by the linear motion device  600  can make the interface apparatus  7  which is mounted with the first panel  2  move relative to the second panel  3  which is mounted to the panel-mounting interface  620 , to press the first panel  2  to the second panel  3  with the lower press block  62 , as shown in  FIG. 12B . 
     In an embodiment, to flatly attach the first panel  2  to the interface apparatus  7 , the panel-mounting interface  700  of the interface apparatus  7  can have a static electrical attaching device (not shown). In another workable embodiment, the panel-mounting interface  700  of the interface apparatus  7  can also have an adhesion layer (not shown). Of course, the panel-mounting interface  700  of the interface apparatus  7  can also have an elastic layer (not shown). The first panel  2  can be attached to the panel-mounting interface  700  of the interface apparatus  7  by using the thermal separation film of the elastic layer. 
     Tenth Embodiment 
     Please refer to  FIG. 13A  and  FIG. 13B ,  FIG. 13A  is a cross-sectional view illustrating that the interface apparatus  9  according to a tenth embodiment of the invention is operated in the assembling apparatus  8 , wherein the assembling apparatus  8  has not been pressed yet.  FIG. 13B  is a cross-sectional view illustrating that the interface apparatus  9  in  FIG. 13A  is operated in the assembling apparatus  8 , wherein the assembling apparatus  8  has been pressed. The tenth embodiments of the invention are described below to illustrate the features and spirits of the invention. 
     As shown in  FIG. 13A , the assembling apparatus  8  and the interface apparatus  9  are used to assemble the first panel  2  and the second panel  3 . The assembling apparatus  8  includes an assembly room  80  and a lower press block  82 . The assembly room  80  includes an electromagnetic device  800  and an air pressure control device (not shown). The air pressure control device can be used to control the air pressure in the assembly room  80 . The lower press block  82  is disposed in the assembly room  80 . The lower press block  82  includes a panel-mounting interface  820  and an adjusting device  822 . The panel-mounting interface  820  can be used to mount the second panel  3 . The adjusting device  822  can be used to adjust the position of the second panel  3 . 
     As shown in  FIG. 13A , the interface apparatus  9  is mainly used to assemble the first panel  2  and the second panel  3  in the assembly room  80  of the assembling apparatus  8 . The interface apparatus  9  includes a panel-mounting interface  900  and an actuating interface  902 . The panel-mounting interface  900  can be used to mount the first panel  2 . The actuating interface  902  can serve as a carrying interface of a transportation device (not shown) to make the interface apparatus  9  get in and out of the assembly room  80  and bear an external force to make the interface apparatus  9  move relative to the second panel  3 . In the tenth embodiment, the external force is generated by the electromagnetic device  800 . Thereby, the magnetic force generated by the electromagnetic device  800  can make the interface apparatus  9  which is mounted with the first panel  2  move relative to the second panel  3  which is mounted to the panel-mounting interface  820 , so as to press the first panel  2  to the second panel  3  with the lower press block  82 , as shown in  FIG. 13B . 
     It is notable that to keep the level of the first panel  2  and prevent the existence of the lateral displacement of the first panel  2  during the period the first panel  2  which is mounted with the interface apparatus  9  presses toward the second panel  3  which is mounted to the lower press block  82 , the assembly room  80  can farther include a guiding device  802 . Thereby, the first panel  2  can be guided during the period the first panel  2  moves relative to the second panel  3 . 
     Moreover, in the embodiment, the interface apparatus  9  is disposed between the electromagnetic device  800  and the lower press block  82 , as shown in  FIG. 13A . Therefore, while willing to keep the first panel  2  over the second panel  3  a certain distance, the electromagnetic device  800  can apply the magnetic force to the actuating interface  902  of the interface apparatus  9  to make the interface apparatus  9  which is mounted with the first panel  2  be suspended over the second panel  3 ; while willing to press the first panel  2  and the second panel  3 , the electromagnetic device  800  can release the magnetic force or generate an additional reverse magnetic force together with the gravity forces of the interface apparatus  9  and the first panel  2  to press the first panel  2  to the second panel  3 . 
     Eleventh Embodiment 
     Please refer to  FIG. 13C .  FIG. 13C  is a cross-sectional view illustrating that the interface apparatus  9  is operated in the assembling apparatus  8  according to another embodiment. As shown in  FIG. 13C , the lower press block  82  can be disposed between an electromagnetic device  800 ′ and the interface apparatus  9 . Therefore, while willing to keep the first panel  2  over the second panel  3  a certain distance, the electromagnetic device  800 ′ can apply a magnetic repulsive force to the actuating interface  902 ′ of the interface apparatus  9  to make the interface apparatus  9  which is mounted with the first panel  2  be suspended over the second panel  3 ; while willing to press the first panel  2  and the second panel  3 , the electromagnetic device  800 ′ can release the magnetic repulsive force or generate an additional magnetic attraction force together with the gravity forces of the interface apparatus  9  and the first panel  2  to press the first panel  2  to the second panel  3 . 
     Twelfth Embodiment 
     Furthermore, taking  FIG. 13A  as the infrastructure of another workable embodiment, the actuating interface  902  is completely attached to the electromagnetic device  800  of the assembly room  80  and over the second panel  3 . During aligning, the relative position of the second panel  3  to the first panel  2  can be controlled by the actions such as horizontal moving, rotating, lifting, or descending performed by the adjusting device  822 . During the period the first panel  2  presses toward the second panel  3  (the gap is smaller than 100 μm), the adjusting device  822  can make the lower press block  82  move toward the first panel  2 , to press the second panel  3  to the first panel  2 . Or, it can also be achieved by releasing the attraction force or generating an additional repulsive force by the electromagnetic device  800 . 
     Please refer to  FIG. 14  together with  FIG. 12A  and  FIG. 12B .  FIG. 14  is a flow chart showing the method of assembling an LCD panel according to the ninth embodiment of the invention. The method of assembling an LCD panel according to the ninth embodiment of the invention mainly includes following steps. 
     As shown in  FIG. 14 , the method of assembling an LCD panel according to the ninth embodiment of the invention firstly includes step S 200 : mounting a first panel  2  on an interface apparatus  7 , to form a first panel assembly. In a practical application, the first panel  2  can be mounted to the interface apparatus  7  by applying an adhesion process or a static electrical attaching process. Moreover, the first panel  2  can also be mounted to the interface apparatus  7  by applying a mechanical holding process or a vacuum attaching process. Additionally, an elastomer (not shown) can be disposed between the first panel  2  and the interface apparatus  7 . Moreover, a process of applying sealant can be added before or after the first panel  2  is mounted with the interface apparatus  7  in the step. 
     Then, the method of assembling an LCD panel according to the ninth embodiment of the invention includes step S 202 : inputting a second panel  3  and the first panel assembly (i.e., the first panel  2  and the interface apparatus  7  which are mounted to each other) into an assembly room  60 . Wherein, processes of disposing sealant and dripping liquid crystals are performed to the second panel  3 . 
     Next, the method of assembling an LCD panel according to the ninth embodiment of the invention includes step S 204 : mounting the second panel  3  on a lower press block  62 . It is notable that the step of inputting the second panel  3  into the assembly room  60  and mounting the second panel  3  to the lower press block  22  are unnecessary to comply with steps S 200 ˜S 204 . In other words, the step of inputting the second panel  3  into the assembly room  60  and mounting the second panel  3  to the lower press block  22  can be performed before the step of inputting the interface apparatus  7  which is mounted with the first panel  2  into the assembly room  60 . 
     As shown in  FIG. 12A  and  FIG. 14 , after inputting the interface apparatus  7  which is mounted with the first panel  2  into the assembly room  60 , the method of assembling an LCD panel according to the ninth embodiment of the invention includes step S 206 : supporting the interface apparatus  7  with a linear motion device  600 , to keep the first panel  2  over the second panel  3 . Subsequently, the method of assembling an LCD panel according to the ninth embodiment of the invention includes step S 208 : lowering the air pressure in the assembly room  60 . Then, the method of assembling an LCD panel according to the ninth embodiment of the invention includes step S 210 : aligning and approaching the first panel  2  to the second panel  3  gradually. 
     As shown in  FIG. 12B  and  FIG. 14 , after aligning and approaching the first panel  2  to the second panel  3  gradually, the method of assembling an LCD panel according to the ninth embodiment of the invention includes step S 212 : pressing the first panel  2  to the second panel  3  with the external force of the linear motion device  600  and the gravity force of the interface apparatus  7 . It is notable that the linear motion device  600  provides a supporting force which is equal to the gravity forces of the interface apparatus  7  and the first panel  2  when the linear motion device  600  supports the interface apparatus  7  to keep the first panel  2  over the second panel  3 . While willing to press the first panel  2  to the second panel  3 , the linear motion device  600  can release the supporting force and press the first panel  2  to the second panel  3  only with the gravity forces of the interface apparatus  7  and the first panel  2 ; or the linear motion device  600  can further provide a reverse supporting force together with the gravity forces of the interface apparatus  7  and the first panel  2  to press the first panel  2  to the second panel  3 . 
     As shown in  FIG. 14 , the method of assembling an LCD panel according to the ninth embodiment of the invention includes step S 214 : hardening the sealant temporarily and returning the air pressure of the assembly room  60 . After that, the method of assembling an LCD panel according to the ninth embodiment of the invention includes step S 216 : outputting the first panel assembly which is pressed with the second panel  3  from the assembly room  60 . Meanwhile, both the first panel  2  and the second panel  3  are mounted to the interface apparatus  7 . Furthermore, the method of assembling an LCD panel according to the ninth embodiment of the invention includes step S 218 : hardening the sealant permanently. Finally, the method of assembling an LCD panel according to the ninth embodiment of the invention includes step S 220 : separating the first panel  2  from the interface apparatus  7 . It is notable that the step S 218  can also be performed after the step S 220  without being limited by the flow chart in  FIG. 14  if necessary. Thereby, the method of assembling an LCD panel according to the ninth embodiment of the invention can be accomplished to assemble the first panel  2  and the second panel  3 . 
     It is notable that if a process of adhesion is performed in step S 200 , the method of assembling an LCD panel according to the ninth embodiment of the invention includes step S 222 : lowering the viscosity between the interface apparatus  7  and the first panel  2  (not shown in  FIG. 14 ). Similarly, if a process of static electrical attaching is performed in step S 200 , the method of assembling an LCD panel according to the ninth embodiment of the invention includes step S 224 : removing the static electricity between the interface apparatus  7  and the first panel  2  (not shown in  FIG. 14 ). 
     Please refer to  FIG. 15  together with  FIG. 13A  and  FIG. 13B ,  FIG. 15  is a flow chart showing the method of assembling an LCD panel according to the tenth embodiment of the invention. The tenth embodiments of the invention are described below to illustrate the features and spirits of the invention. 
     As shown in  FIG. 15 , the method of assembling an LCD panel according to the tenth embodiment of the invention firstly includes step S 300 : mounting a first panel  2  on an interface apparatus  9 , to form a first panel assembly. The method of assembling an LCD panel according to the tenth embodiment of the invention firstly includes step S 302 : inputting a second panel  3  and the first panel assembly into an assembly room  80 . Wherein, processes of disposing sealant and dripping liquid crystals are performed to the second panel  3 . The method of assembling an LCD panel according to the tenth embodiment of the invention firstly includes step S 304 : mounting the second panel  3  on a lower press block  82 . Similarly, it is notable that the step of inputting the second panel  3  into the assembly room  80  and mounting the second panel  3  to the lower press block  82  can be performed before the step of inputting the interface apparatus  9  which is mounted with the first panel  2  into the assembly room  80 . 
     As shown in  FIG. 13A  and  FIG. 15 , after inputting the interface apparatus  9  which is mounted with the first panel  2  into the assembly room  80 , the method of assembling an LCD panel according to the tenth embodiment of the invention includes step S 306 : supporting the interface apparatus  9  with an electromagnetic device  800 , to keep the first panel  2  over the second panel  3 . Subsequently, the method of assembling an LCD panel according to the tenth embodiment of the invention includes step S 308 : lowering the air pressure in the assembly room  80 . Then, the method of assembling an LCD panel according to the tenth embodiment of the invention includes step S 310 : aligning and approaching the first panel  2  to the second panel  3  gradually. 
     As shown in  FIG. 13A  and  FIG. 15 , after aligning and approaching the first panel  2  to the second panel  3  gradually, the method of assembling an LCD panel according to the tenth embodiment of the invention includes step S 312 : pressing the first panel  2  to the second panel  3  with the magnetic force of the electromagnetic device  800  and the gravity force of the interface apparatus  9 . It is notable that the interface apparatus  9  can be disposed between the electromagnetic device  800  and the lower press block  82 , as shown in  FIG. 13A . In other words, the electromagnetic device  800  provides a magnetic attraction force which is equal to the gravity forces of the interface apparatus  9  and the first panel  2  when the electromagnetic device  800  applies the magnetic attraction force to the interface apparatus  9  to keep the first panel  2  over the second panel  3 . While willing to press the first panel  2  to the second panel  3 , the electromagnetic device  800  can remove the magnetic attraction force and press the first panel  2  to the second panel  3  only with the gravity forces of the interface apparatus  9  and the first panel  2 ; or the electromagnetic device  800  can further applies a magnetic repulsive force together with the gravity forces of the interface apparatus  9  and the first panel  2  to press the first panel  2  to the second panel  3 . 
     In a practical application, the lower press block  82  can also be disposed between the electromagnetic device  800 ′ and the interface apparatus  9 , as shown in  FIG. 13C . In other words, the electromagnetic device  800 + provides a magnetic repulsive force which is equal to the gravity forces of the interface apparatus  9  and the first panel  2  when the electromagnetic device  800 ′ applies the magnetic repulsive force to the interface apparatus  9  to keep the first panel  2  over the second panel  3 . While willing to press the first panel  2  to the second panel  3 , the electromagnetic device  800 ′ can remove the magnetic repulsive force and press the first panel  2  to the second panel  3  only with the gravity forces of the interface apparatus  9  and the first panel  2 ; or the electromagnetic device  800 ′ can further applies a magnetic attraction force together with the gravity forces of the interface apparatus  9  and the first panel  2  to press the first panel  2  to the second panel  3 . 
     Moreover, taking  FIG. 13A  as the embodiment, if the actuating interface  902  is completely attached to the electromagnetic device  800  of the assembly room  80  and over the second panel  3  in step S 310 , the method of assembling an LCD panel according to the tenth embodiment of the invention includes step S 312 ′: driving the adjusting device  822  to make the lower press block  82  move toward the first panel  2 , to press the second panel  3  to the first panel  2  (not shown). By releasing the attraction force or generating an additional repulsive force by the electromagnetic device  800 , this can also be achieved. 
     As shown in  FIG. 15 , the method of assembling an LCD panel according to the tenth embodiment of the invention includes step S 314 : hardening the sealant temporarily and returning the air pressure of the assembly room  80 . After that, the method of assembling an LCD panel according to the tenth embodiment of the invention includes step S 316 : outputting the first panel assembly which is pressed with the second panel  3  from the assembly room  80 . Meanwhile, both the first panel  2  and the second panel  3  are mounted to the interface apparatus  9 . Furthermore, the method of assembling an LCD panel according to the tenth embodiment of the invention includes step S 318 : hardening the sealant permanently. Finally, the method of assembling an LCD panel according to the tenth embodiment of the invention includes step S 320 : separating the first panel  2  from the interface apparatus  9 . It is notable that the step S 318  can also be performed after the step S 320  without being limited by the flow chart in  FIG. 15  if necessary. Thereby, the method of assembling an LCD panel according to the tenth embodiment of the invention can be accomplished to assemble the first panel  2  and the second panel  3 . 
     Similarly, if a process of adhesion is performed in step S 300 , the method of assembling an LCD panel according to the tenth embodiment of the invention includes step S 322 : lowering the viscosity between the interface apparatus  9  and the first panel  2  (not shown in  FIG. 15 ). Additionally, if a process of static electrical attaching is performed in step S 300 , the method of assembling an LCD panel according to the ninth embodiment of the invention includes step S 324 : removing the static electricity between the interface apparatus  9  and the first panel  2  (not shown in  FIG. 15 ). 
     With the foregoing detailed description of the preferred embodiments of the invention, it can be clearly known that with the method of assembling an LCD panel, the interface apparatus, and the assembling apparatus, the following benefits/advantages can be achieved: (1) the complexity of the assembly room can be simplified and the cycle time in the assembly room can be shortened by moving the processes of flatly attaching and separating panels out of the assembly room, and the gravity of the panel is helpful for the panel to be flatly attached on an interface apparatus; (2) the interface apparatus, which can provide enough stiffness and be an interface for a robot arm to hold or unload, is easier to be processed than a glass substrate during operation; (3) the design of the interface apparatus, which can keep the first panel over the second panel a certain height without mounting the first panel on the upper press block, can simplify the mechanisms in the assembly room and shorten the cycle time; and (4) because the upper press block is unnecessary and the interface apparatus is attaching the first panel while pressing downward, the alignment offset caused by the static electricity sucker which does not easy to release simultaneously after the 8 th  generation. 
     With the example and explanations above, the features and spirits of the invention will be hopefully well described. Those skilled in the art will readily observe that numerous modifications and alterations of the device may be made while retaining the teaching of the invention. Accordingly, the above disclosure should be construed as being limited only by the metes and bounds of the appended claims.