Patent Publication Number: US-2022212457-A1

Title: Buffer component and pressing device

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     The present application is a Divisional Application of U.S. patent application Ser. No. 16/471,563 filed on Jun. 20, 2019, which is a National phase application of PCT Application No. PCT/CN2017/107254 filed on Oct. 23, 2017, which claims the benefit of Chinese Patent Application No. 201710797334.X filed on Sep. 6, 2017. All the above are hereby incorporated by reference in their entirety. 
    
    
     FIELD 
     The present disclosure generally relates to the technical field of processing equipment, and more particularly relates to a pressing device which is for attaching anisotropic conductive film (ACF) on a display panel, and a buffer component defined on the pressing device. 
     BACKGROUND 
     With the rapid development of the electronic products towards a direction of becoming light, thin, short, and small, various portable electronic products almost all use liquid crystal displays (LCD) as the display panels, thus the liquid crystal display has become an important component. A liquid crystal display not only includes a liquid crystal panel, but also a driving chip which is connected to the liquid crystal panel for controlling a display signal. We can connect the liquid crystal display panel with the driving chip by an ACF hot pressure welding process. The ACF hot pressure welding process is carried out by using the ACF to pre-press and bond an IC or an integrated circuit to a LCD glass substrate. During pre-pressing, a pressing device having different buffer components defined there on may give rise to different bonding result. The current buffer components are commonly packaged type and box-type, the packaged type buffer component is not fixedly fixed in use and is prone to fall off, resulting that the bond would have a high failure rate which is greater than 2%. The box-type buffer component has a punching supporter in large size, which is prone to damage the product during the punching supporter is changed, thus the using and changing of the box-type buffer component are inconvenient, the efficiency of a bonding machine using the box-type buffer component is also affected. Further, both the two kinds buffer components need to be changed frequently, almost every two days for once, and the changing always takes a long time of about 10 minutes for each time, resulting a long down time and a low efficiency. 
     SUMMARY 
     The present disclosure provides a buffer component and a pressing device, which can improve the pressing device&#39;s attaching success rate of bonding the ACF film, in which the buffer component can be excellently fixed, and is convenient to be used and changed, thus the down time can be reduced and the efficiency of the pressing device can be improved, the risk of damaging the product during the process of changing the buffer component can also be reduced. 
     One aspect, the present disclosure provides a buffer component, applied in a pressing device which includes an anisotropic conductive film pressure knife. The Buffer component includes: 
     an inserting part, made of a first elastic material, the inserting part is configured to insert into a lower end of the anisotropic conductive film pressure knife; and 
     a buffering part, made of a second elastic material, the buffering part connects to the inserting part, the buffering part is configured to closely attach to a lower end surface of the lower end of the anisotropic conductive film pressure knife. 
     Another aspect, the present disclosure provides a buffer component, applied in a pressing device. The pressing device includes an anisotropic conductive film pressure knife, the buffer component includes: 
     an inserting part, configured to insert into a lower end of the anisotropic conductive film pressure knife, a cross section of the inserting part is a regular polygon; and 
     a buffering part, connected to the inserting part, the buffering part is configured to closely attach to a lower end surface of the lower end of the anisotropic conductive film pressure knife, a cross section of the buffering part is a rectangle; 
     the buffer component is an integrated element made of rubber. 
     Another aspect, the present disclosure also provides a pressing device, which is configured to press an anisotropic conductive film on a display panel. The pressing device includes an anisotropic conductive film pressure knife and a buffer component. A lower end of the anisotropic conductive film pressure knife defines a groove. The buffer component includes: 
     an inserting part, made of a first elastic material, the inserting part is received in the groove of the anisotropic conductive film pressure knife; and 
     a buffering part, made of a second elastic material, the buffering part is configured to closely attach to a lower end surface of the lower end of the anisotropic conductive film pressure knife. 
     The exemplary embodiment of the present disclosure provides a buffer component and a pressing device, the buffer component includes the inserting part and the buffering part, the inserting part is configured to insert into the lower end of the anisotropic conductive film pressure knife, to fix the buffer component at the lower end of the anisotropic conductive film pressure knife, the buffer component is attached at the lower end surface of the anisotropic conductive film pressure knife. The inserting part and the buffering part are both made of the elastic material, the buffering part can provide buffer during the process of attaching the ACF film through the pressing device, to improve the attaching rate and the success rate. The buffer part connects to the anisotropic conductive film pressure knife through the inserting mode, as such the buffer component can be fixedly bonded with the anisotropic conductive film pressure knife, the bonding is much stronger, and the buffer component is not prone to fall off, and the inner cavity of the device is saved. The changing cycle is longer, the changing time is shorted, it is convenient to manage and change the buffer component, the efficiency of the ACF attaching machine is improved, the down time of the ACF attaching machine is also reduced. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       To better illustrate the technical solutions that are reflected in various embodiments according to this disclosure or that are found in the prior art, the accompanying drawings intended for the description of the embodiments herein or for the prior art will now be briefly described, it is evident that the accompanying drawings listed in the following description show merely some embodiments according to this disclosure, and that those having ordinary skill in the art will be able to obtain other drawings based on the arrangements shown in these drawings without making inventive efforts, where in these drawings. 
         FIG. 1  is a structure diagram of the buffer component of the present disclosure according to an exemplary embodiment. 
         FIG. 2  is a structure diagram of the anisotropic conductive film pressure knife of the pressing device of the present disclosure according to an exemplary embodiment. 
         FIG. 3  is a diagram of mounting the buffer component shown in  FIG. 1  to the anisotropic conductive film pressure knife shown in  FIG. 2 . 
         FIG. 4  is a structure diagram of another buffer component of the present disclosure according to an exemplary embodiment. 
         FIG. 5  is a cross section of the inserting part of the buffer component of the present disclosure according to an exemplary embodiment. 
     
    
    
     DETAILED DESCRIPTION 
     The technical solutions of the embodiments of the present disclosure will be clearly and completely described in the following with reference to the accompanying drawings. It is obvious that the embodiments to be described are only a part rather than all of the embodiments of the present disclosure. All other embodiments obtained by persons skilled in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. 
     It should be understood that the terms used in this specification and claims such as “comprising” and “including” refer to the existence of the described characteristics, steps, operations, elements and/or components, without excluding one or more other characteristics, steps, operations, elements and/or components, or the existence or addition of their sets. 
     It is also to be understood that, the terms described in the present disclosure are only for description of specific embodiment, rather than limiting the scope of the disclosure. As described in the specification and claims of the present disclosure, “a”, “one” and “this” is used for description of subject including the plural form, unless other situation is clearly defined in the context. 
     Referring to  FIG. 1 ,  FIG. 1  is a structure diagram of the buffer component  10  of the present disclosure according to an exemplary embodiment. The buffer component  10  of the exemplary embodiment can be mounted on an anisotropic conductive film pressure knife  20  of the pressing device, referring to  FIGS. 2-3 . 
     Referring to  FIGS. 1-3 and 5 , in the exemplary embodiment, the buffer component  10  includes an inserting part  101  and a buffering part  102 . 
     The inserting part  101  is made of a first elastic material, the inserting part  101  is configured to insert into a groove  201  formed at a lower end of the anisotropic conductive film pressure knife  20 . The buffering part  102  is made of a second elastic material, the buffering part  102  is connected to the inserting part, the buffering part  102  is configured to closely attach to a lower end surface of the lower end of the anisotropic conductive film pressure knife  20 . In detail, the first elastic material is the same as the second elastic material, or, the first elastic material is different from the second elastic material. The elastic material is configured to provide buffering for the anisotropic conductive film pressure knife  20  of the pressing device, therefore, when the ACF film is attached on the display panel by the pressing device, the ACF film is not easily to be broken, so as to achieve a higher attaching rate and a higher qualification rate. 
     In the exemplary embodiment, the first material is the same with the second material, can the first material and the second material are both silica gel. And the inserting part  101  is integrated with the buffering part  102 . It is to be understood that, the elastic material can also be a rubber, or an elastic plastic. The inserting part  101  includes a top end surface inserted in the lower end of the anisotropic conductive film pressure knife  20 , and a lower end surface connected to the buffering part  102 , a cross section of the inserting part  101  is a regular polygon. In detail, the cross section of the inserting part  101  is a trapezoid, as such the inserting part  101  can be clamped in the groove  201  of the anisotropic conductive film pressure knife  20 , therefore, the buffer component  10  can be fixed on the pressing device, and cannot be escaped from the pressing device. In the exemplary embodiment, the cross section of the inserting part  101  is the trapezoid which is wide at the top and narrow at the bottom, as such, the buffer component  10  is fixed in the groove  201  of the anisotropic conductive film pressure knife  20 . In some feasible exemplary embodiments, for example, in the exemplary embodiment, the topline W 1  of the trapezoid has a length of 1.6 centimeter, the baseline W 2  of the trapezoid has a length of 1 centimeter, the height H 1  of the trapezoid has a length of 1.5 centimeter. A cross section of the buffer part  102  is a rectangle, a length of the buffering part  102  is equal to a length of the anisotropic conductive film pressure knife  20 , and a width of the buffering part  102  is equal to a width of the anisotropic conductive film pressure knife  20 , and the buffering part  102  is closely attached with the lower end surface of the anisotropic conductive film pressure knife  20 , as such the buffering part  102  can provides buffer for the anisotropic conductive film pressure knife  20 . In some feasible exemplary embodiments, for example, in the exemplary embodiment, a length L of the rectangle is 3 centimeter, a height H 2  of the rectangle is 1 centimeter. 
     One buffer component of the present disclosure according to the exemplary embodiment is applied in the pressing device. The pressing device includes the anisotropic conductive film pressure knife  20 , the buffer component includes: the inserting part, which is made of the first elastic material, the inserting part is configured to insert into the lower end of the anisotropic conductive film pressure knife  20 ; the buffering part, which is made of the second elastic material, the buffering part connects to the inserting part, the buffering part is configured to attach to the lower end surface of the lower end of the anisotropic conductive film pressure knife, so as to improve the attaching success rate of an ACF attaching machine. The buffer component is tightly fixed with the anisotropic conductive film pressure knife  20 , it is convenient to use and change the buffer component. And the using condition of the buffer component can be measured, as such it is convenient to manage the buffer component, so as to improve the efficiency and reduce the down time, the risk of damaging the product during the process of changing the buffer component can also be reduced. 
     Referring to  FIG. 1  again,  FIG. 1  shows a buffering component of the present disclosure according to an exemplary embodiment, the buffering component can be applied in the pressing device. The pressing device includes an anisotropic conductive film pressure knife  20 . The buffering component  10  is an integrated element made of silica gel, the buffering component  10  includes the inserting part  101  and the buffering part  102 . 
     The inserting part  101  is configured to mount into the groove  201  formed on the lower end of the anisotropic conductive film pressure knife  20 , the cross section of the inserting part  101  is regular polygon, as such the inserting part  101  can be clamped in the groove  201  of the anisotropic conductive film pressure knife  20 , therefore, the buffer component  10  can be fixed on the anisotropic conductive film pressure knife  20 , and the buffer component is not easy to fall off. The cross section of the buffering part  102  is a rectangle, and the buffering part  102  connects to the inserting part, the length of buffering part  102  is equal to the length of the anisotropic conductive film pressure knife  20 , the width of buffering part  102  is equal to the width of the anisotropic conductive film pressure knife  20 . The buffering part  102  is closely attached at the lower end surface of the lower end of the anisotropic conductive film pressure knife  20 , to provide buffering for the anisotropic conductive film pressure knife  20 . 
     One buffer component of the present disclosure according to the exemplary embodiment is applied in the pressing device. The pressing device includes the anisotropic conductive film pressure knife  20 , the buffer component includes: the inserting part, the inserting part is configured to insert into the lower end of the anisotropic conductive film pressure knife  20 , the cross section of the inserting part is regular polygon; the buffering part, the buffering part connects to the inserting part, the buffering part is configured to attach to the lower end surface of the lower end of the anisotropic conductive film pressure knife, so as to improve the attaching success rate of an ACF attaching machine. The buffer component is tightly fixed with the anisotropic conductive film pressure knife  20 , it is convenient to use and change the buffer component. And the using condition of the buffer component can be measured, as such it is convenient to manage the buffer component, so as to improve the efficiency and reduce the down time, the risk of damaging the product during the process of changing the buffer component can also be reduced. 
     Referring to  FIGS. 2-3 and 5 ,  FIG. 2  is a structure diagram of the anisotropic conductive film pressure knife of the pressing device of the present disclosure according to an exemplary embodiment.  FIG. 3  is a diagram of mounting the buffer component shown in  FIG. 1  to the anisotropic conductive film pressure knife shown in  FIG. 2 . 
     Referring to the figures, the pressing device in the exemplary embodiment includes the anisotropic conductive film pressure knife  20  and the buffer component  10  mounted in the lower end of the anisotropic conductive film pressure knife  20 . Of course, the pressing device further includes other existing components, while the details are not redundantly described herein. The anisotropic conductive film pressure knife  20  is connected to a power device of the ACF attaching machine, the power device can provide power to the anisotropic conductive film pressure knife  20 , the lower end of the anisotropic conductive film pressure knife  20  defines a groove  201 , the groove  201  is matched with the inserting part  101  of the buffer component  10  in shape, the groove  201  has an structure which is wide at the top and narrow at the bottom. For example, the inserting part  101  of the buffer component  10  in the exemplary embodiment and the groove  201  of the anisotropic conductive film pressure knife  20  are both trapezoid. In some feasible exemplary embodiments, for example, in the exemplary embodiment, the cross section of the inserting part  101  is a trapezoid. the topline W 1  of the trapezoid has a length of 1.6 centimeter, the baseline W 2  of the trapezoid has a length of 1 centimeter, the height H 1  of the trapezoid has a length of 1.5 centimeter. In the exemplary embodiments, referring to  FIG. 2 , the cross section of the groove  201  is a trapezoid. In some feasible exemplary embodiments, for example, in the exemplary embodiment, the cross section of the buffer part  102  is a rectangle, the length L of the rectangle is 3 centimeter, the height H 2  of the rectangle is 1 centimeter. The length of the buffering part  102  is equal to the length of the lower end surface of the anisotropic conductive film pressure knife  20 , and the width of the buffering part  102  is equal to the width of the lower end surface of the anisotropic conductive film pressure knife  20 . When the pressing device works, the buffering part  102  provides a buffer between the anisotropic conductive film pressure knife  20  and the ACF film, to improve the attaching success rate. The inserting part  101  is inserted in the groove  201 , so as to fix the buffer component  10  on the anisotropic conductive film pressure knife  20 . As the inserting part  101  is trapezoid in shape, the buffer component  10  is not easy to fall off. The the inserting part  101  of the buffer component  10  is matched with the groove  201  of the anisotropic conductive film pressure knife  20  in shape, when changing the buffer component  10 , the inserting part  101  of the buffer component  10  can be gradually filled into the groove  201  along the groove  201 . Referring to  FIG. 3 , the buffer component  10  can be mounted on the anisotropic conductive film pressure knife  20  from left to right or from right to left, as such it easy to change the buffer component  10 , the down time is reduced, so as to achieve a higher efficiency. 
     One pressing device provided by the exemplary embodiment of the present disclosure is configured to press the anisotropic conductive film on the display panel. The pressing device includes the anisotropic conductive film pressure knife, the lower end of the anisotropic conductive film defines a groove; and the buffer component, the buffer component includes: the inserting part, which is made of the first elastic material material, the inserting part is configured to insert into the groove of the anisotropic conductive film pressure knife; the buffering part, which is made of the second elastic material, the buffering part connects to the inserting part, the buffering part is configured to closely attach to the lower end surface of the lower end of the anisotropic conductive film pressure knife, so as to improve the attaching success rate of the ACF attaching machine. The buffer component is tightly fixed with the anisotropic conductive film pressure knife, it is convenient to use and change the buffer component. And the using condition of the buffer component can be measured, as such it is convenient to manage the buffer component, so as to improve the efficiency and reduce the down time, the risk of damaging the product during the process of changing the buffer component can also be reduced. 
     Referring to  FIG. 4 , which is a structure diagram of another buffer component of the present disclosure according to another exemplary embodiment. In the exemplary embodiment, the buffering component  40  includes an inserting part  401  and a buffering part  402 . 
     The inserting part  401  is made of the first elastic material, and the inserting part  401  is configured to insert into the groove formed at the lower end surface of the lower end of the anisotropic conductive film pressure knife  20 ; the buffering part  402  is made of the second elastic material, the buffering part is closely attached with the lower end surface of the lower end of the anisotropic conductive film pressure knife  20 . In detail, the first material is the same with the second material, or the first material is different from the second material, the elastic material can provide buffer for the anisotropic conductive film pressure knife  20  of the pressing device. Therefore, when the pressing device attaches the ACF film on the display panel, the ACF film is not easily to be broken, so as to achieve a higher attaching rate and a higher qualification rate. In the exemplary embodiment, the first material is the same with the second material, can the first material and the second material are both silica gel. And the inserting part  401  is integrated with the buffering part  402 . In detail, the elastic material can also be a rubber, or an elastic plastic. The inserting part  401  includes a top end surface inserted in the lower end of the anisotropic conductive film pressure knife  20 , and a lower end surface connected to the buffering part  402 . In the exemplary embodiment, the inserting part  401  has a hexagon structure, as such the buffer  40  can be fixed in the groove of the anisotropic conductive film pressure knife  20 . It is to be understood that, in another exemplary embodiment of the present disclosure, the inserting part  401  can have other regular polygonal structure, the length of the buffering part  402  is equal to the length of the anisotropic conductive film pressure knife  20 , and the width of the buffering part  402  is equal to the width of the anisotropic conductive film pressure knife  20 , and the buffering part  402  is closely attached with the lower end surface of the anisotropic conductive film pressure knife  20 , as such the buffering part  402  can provides buffer for the anisotropic conductive film pressure knife  20 . 
     In the above exemplary embodiments, a buffer component and a pressing device are provided, the inserting part of the buffer component is matched with the groove of the pressing device in shape, as such the buffer component can fixedly connects to the pressing device to prevent the buffer component from being escaped from the pressing device, so as to improve the attaching success rate of the ACF attaching machine. Furthermore, as the inserting part of the buffer component is matched with the groove pf the pressing device in shape, when the buffer component needs to be changed, the buffer component can be placed into or took out along sides of the groove, as such it easy to change the buffer component, the down time of the ACF attaching machine for changing the buffer component can be reduced, so as to achieve a higher efficiency, and it is also convenient to manage. 
     The foregoing description merely portrays some illustrative embodiments according to the disclosure and therefore is not intended to limit the patentable scope of the disclosure. Any equivalent structural or flow transformations that are made taking advantage of the specification and accompanying drawings of the disclosure and any direct or indirect applications thereof in other related technical fields shall all fall in the scope of protection of the disclosure. Therefore, the scope of protection of this disclosure shall be subject to the claims.