Patent Publication Number: US-9897381-B2

Title: Supporting structure and oven

Description:
FIELD OF THE INVENTION 
     The present invention relates to an equipment technology field of panel display industry, and more particularly to a supporting structure and an oven applying the supporting structure. 
     DESCRIPTION OF RELATED ART 
     In a PI (Polyimide) process stage of manufacturing a liquid crystal panel, a substrate printed with a PI liquid is required transferring a heating platform having a temperature around 100° C. for performing a prebaking process such that a solvent in the PI liquid is evenly volatilized and form a film. In the heating process, using supporting pins having a certain height to support the substrate such that a certain distance is maintained between the substrate and the heating platform in order to ensure the heating uniformity of the PI liquid on the surface of the substrate. Because between the position of the surface of the substrate contacted with the supporting pins and other positions, temperature difference is existed, an uneven heating to the surface of the PI film when baking is easily generated such that a mura phenomenon (mura means that a phenomenon of various marks because of uneven brightness) is generated at a liquid crystal panel applying the substrate. In the manufacturing process, moving the positions of the supporting pins to an ineffective region (that is, a non-display region) such that the mura phenomenon is located within the ineffective region. 
     However, in the conventional manufacturing process, the supporting pins are installed on fixed locations of the heating platform for supporting the substrate. The fixed locations can only correspond to one type of substrate such that the positions of the supporting pins are located within the ineffective region of the substrate. When the heating platform is used for heating other types of substrates, because the positions of the supporting pins are fixed, the supporting pins are easily located in an effective region of the substrate such that the liquid crystal panel applying the substrate generates the mura phenomenon. 
     SUMMARY OF THE INVENTION 
     The technology problem solved by the present invention is to provide a supporting structure that can move the positions of the supporting pins, and the supporting structure is used for supporting a substrate in an oven. 
     In order to achieve the above purpose, the embodiment of the present invention adopts the following technology solutions: 
     On the one hand, providing a supporting structure for supporting a substrate in an oven, the oven is used for baking the substrate in a production process of a liquid crystal panel, and the supporting structure comprises: 
     a fixing frame including a frame body, and a fixing portion and a support portion which are fixed to the frame body, wherein the fixing portion is provided with a sliding slot, the fixing portion is provided with at least one positioning region located inside the sliding slot, through a fastener passing through the positioning region, the fixing portion is secured and fixed to a heating platform of the oven such that the frame body is fixed to the heating platform; 
     a supporting strip engaged at the support portion; and 
     multiple supporting pins disposed separately on the supporting strip to support the substrate. 
     Wherein, the sliding slot is a strip-shaped slot, and the fixing portion is provided with at least two positioning regions inside the sliding slot. 
     Wherein, the sliding slot is a cross-shaped slot or a rectangular slot, and the fixing portion is provided with at least four positioning regions located inside the sliding slot. 
     Wherein, the sliding slot is V-shaped or Δ-shaped, and the fixing portion is provided with at least three positioning regions located inside the sliding slot. 
     Wherein, the fastener is a bolt, a stud or a screw. 
     Wherein, the support portion includes a support slot, and the supporting strip is engaged in the support slot. 
     Wherein, each supporting pin adopts a ceramic material. 
     Wherein, the frame body and the fixing portion form an included angle for gripping and holding the frame body conveniently. 
     On the other hand, also providing an oven used for baking a substrate of a liquid crystal panel, comprising: a heating platform; and a supporting structure as described in any one of the above. 
     Wherein the number of the fixing frames of the supporting structure is two, the fixing frames are disposed oppositely at two sides of the heating platform, each of the fixing frames includes at least two support portions, the support portions of the two fixing frames are disposed correspondingly one by one, and two terminals of the supporting strip are respectively engaged at two of the corresponding support portions of the fixing frame. 
     Comparing to the prior art, the present invention has following advantageous effects: 
     In the supporting structure of the present embodiment, the fixing portion is provided with at least one positioning region located inside the sliding slot. The fastener passes through the positioning region in order to fix the fixing portion to the heating platform of the oven. Therefore, when the fastener passes through different positioning regions, the fixing portion generates a displacement with respect to the heating platform so as to move positions of the supporting pins to generate a displacement with respect to the heating platform. Because the positions of the supporting pins of the supporting structure can be moved so that the positions of the supporting pins can fall in a non-display region of the substrate such that a liquid crystal panel applying the substrate can avoid generating a mura phenomenon. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       In order to more clearly illustrate the technical solution in the present invention or in the prior art, the following will illustrate the figures used for describing the embodiments or the prior art. It is obvious that the following figures are only some embodiments of the present invention. For the person of ordinary skill in the art without creative effort, it can also obtain other figures according to these figures. 
         FIG. 1  is a schematic structure diagram of an oven provided by an embodiment of the present invention; 
         FIG. 2  is an enlarged schematic diagram of the structure at portion A in  FIG. 1 ; and 
         FIG. 3  is a schematic structure diagram of a fixing frame of a supporting structure of an oven provided by an embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     The following content combines with the drawings and the embodiment for describing the present invention in detail. It is obvious that the following embodiments are only some embodiments of the present invention. For the person of ordinary skill in the art without creative effort, the other embodiments obtained thereby are still covered by the present invention 
     Besides, the description of the following embodiments is referred to the appended figures in order to exemplarily illustrate the specific embodiments of the present invention. The directional terms mentioned in the present invention such as “up”, “down”, “front”, “rear”, “left”, “right”, “inside”, “outside”, “side surface” and so on only refer to the direction of appended figures. Therefore, the adopted directional terms are for describing and understanding the present invention better and more clearly, not for indicating or implying the device or component having specific direction or operating by using a specific directional structure. Therefore, cannot be understood as the limitation of the present invention. 
     In the description of the present invention, it should be noted that unless additional definite rule and limitation are provided, the term “install”, “link”, “connect” should be understood broadly. For example, can be fixedly connected or detachably connected or integrally connected; or mechanically connected, directly connected, indirectly connected through an intermediate or internal communication between two components. For the person of ordinary skill in the art, the specific meaning of the present invention of the above terms can be understood based on specific situation. 
     With reference to  FIG. 1  and  FIG. 2 , the present embodiment provides a supporting structure  1  for supporting a substrate in an oven. The oven is used for baking the substrate in a production process of liquid crystal panel. The supporting structure  1  includes a fixing frame  11 , a supporting strip  12  and multiple supporting pins  13 . The fixing frame  11  includes a fastener  111 , a frame body  112 , a fixing portion  113  fixed to the frame body  112  and a support portion  114  fixed to the frame body  112 . The fixing portion  113  is provided with a sliding slot  115 . The fixing portion  113  is provided with at least one positioning region  1150  located inside the sliding slot  115 . Through the fastener  111  passing through the positioning region  1150 , the fixing portion  113  is secured and fixed to a heating platform  2  of the oven such that the frame body  112  is fixed to the heating platform  2 . The supporting strip  12  is engaged at the support portion  114 . The multiple supporting pins  13  are disposed separately on the supporting strip  12  to support the substrate. 
     In the present embodiment, because the fixing portion  113  is provided with at least one positioning region  1150  located inside the sliding slot  115 , the fastener  111  passing through the positioning region  1150  in order to secure and fix the fixing portion  113  to the heating platform  2  of the oven, therefore, when the fastener  111  passes through different positioning regions  1150  (that is, located at different positions of the sliding slot  115 ), the fixing portion  113  generates a displacement with respect to the heating platform  2  so as to move positions of the supporting pins  13  to generate a displacement with respect to the heating platform  2 . Because the positions of the supporting pins  13  of the supporting structure  1  can be moved so that the positions of the supporting pins  13  can fall in a non-display region of the substrate such that a liquid crystal panel applying the substrate can avoid generating a mura phenomenon. 
     Furthermore, with reference to  FIG. 1  and  FIG. 2 , as an alternative embodiment, the sliding slot  115  of the fixing portion  113  is a strip-shaped slot. The fixing portion  113  is provided with at least two positioning regions inside the sliding slot  115 . At the same time, because the sliding slot  115  is a continuous strip-shaped slot, anyone position inside the sliding slot  115  can be the positioning region. A user can flexibility adjust the position that the fastener  111  passes through the sliding slot  115  in order to adjust the positions of the supporting pins  13  to satisfy a supporting requirement of different products. 
     In the present embodiment, the direction of the strip-shaped slot of the sliding slot  115  can be any direction. As the embodiment shown in  FIG. 2 , the strip-shaped slot of the sliding slot  115  is disposed horizontally. Particularly, when the sliding slot  115  are disposed obliquely (that is, forming an included angle with respect to a horizontal direction and a vertical direction), the fixing portion  113  can realize adjusting a horizontal and vertical displacement with respect to the heating platform  2  such that the application of the supporting structure  1  can be more flexible and diverse to be suitable for the supporting of more types of substrates. 
     Furthermore, as an alternative embodiment, the sliding slot  115  of the fixing portion  113  is a cross-shaped slot or a rectangular slot. The fixing portion  113  is provided with at least four positioning regions located inside the sliding slot  115 . For example, the four positioning regions can be arranged at four endpoints of the sliding slot  115 . At the same time, because the sliding slot  115  is continuous, any one position inside the sliding slot  115  can be the positioning region. The fixing portion  113  can realize adjusting a horizontal and vertical displacement with respect to the heating platform  2  such that the application of the supporting structure  1  can be more flexible and diverse to be suitable for the supporting of more types of substrates. 
     Furthermore, as an alternative embodiment, the sliding slot  115  of the fixing portion  113  can be V-shaped or Δ-shaped. The fixing portion  113  is provided with at least three positioning regions located inside the sliding slot  115 . For example, the three positioning regions can be arranged at three endpoints of the sliding slot  115 . At the same time, because the sliding slot  115  is continuous, any one position inside the sliding slot  115  can be the positioning region. The fixing portion  113  can realize adjusting a horizontal and vertical displacement with respect to the heating platform  2  such that the application of the supporting structure  1  can be more flexible and diverse to be suitable for the supporting of more types of substrates. 
     It can be understood that the sliding slot  115  can also be other different shapes such as an annular shape, a pentagonal shape and so on, no more repeating here. 
     Furthermore, optionally, the fastener  111  is a mechanical part used for fastening and connecting so that the fastener  111  can be a bolt, a stud or a screw. 
     Furthermore, with reference to  FIG. 1  and  FIG. 2 , the support portion  114  includes a support slot  1141 , and the supporting strip  12  is engaged in the support slot  1141 . As shown in  FIG. 2 , when a space inside the support slot  1141  is larger than a size of the supporting strip  12  engaged inside the support slot  1141 , the supporting strip  12  can slightly move with respect to the supporting strip  12 . Therefore, through adjusting the position of the supporting strip  12 , slightly adjusting the positions pf the supporting pins  13  can be realized. 
     Furthermore, the supporting strip  12  adopts a wearable and high temperature resistant material. The supporting pin  13  adopts a wearable, high temperature resistant and antistatic material such as ceramics. 
     Furthermore, with reference to  FIG. 1  to  FIG. 3 , optionally, the frame body  112  of the fixing frame  11  and the fixing portion  113  form an included angle for griping and holding the frame body  112  conveniently. Particularly, when the fixing frame  11  is heated to be hot by the high temperature of the heating platform  2 , a user can grip and hold the frame body  112  in order to move the fixing frame  11 . 
     Optionally, the number of the fixing portion  113  and the support portion  114  of the fixing structure  1  can be flexibility adjusted. Generally, the number is at least two. For example, in the embodiment as shown in  FIG. 1 , the number of the fixing portions  113  is four, adjacent fixing portions  113  are disposed at an interval. The number of the support portions  114  is three, and the support portions  114  are respectively disposed at locations between two adjacent fixing portions  113 . 
     With reference to  FIG. 1 , the embodiment of the present invention also provides an oven, and the oven includes a heating platform  2  and a supporting structure  1  as described above. The oven can be used for baking a substrate of a liquid crystal panel. Because the oven adopts the supporting structure  1 , positions of the supporting pins  13  can be moved. Therefore, the supporting pins  13  can fall in a non-display region of the substrate such that a liquid crystal panel applying the substrate can avoid generating a mura phenomenon. 
     Furthermore, with reference to  FIG. 1  and  FIG. 2 , specifically, the number of the fixing frames  11  of the supporting structure  1  is two. Besides, the fixing frames  11  are disposed oppositely at two sides of the heating platform  2 . Each of the fixing frames  11  includes at least two support portions  114 , and the support portions  114  of the two fixing frames  11  are disposed correspondingly one by one. Two terminals of the supporting strip  12  are respectively engaged at two of corresponding support portions  114  of the fixing frame  11 . 
     In the present embodiment, the number of the supporting strips  12  is less than or equal to the number of the support portions  114  at each fixing frame  11 . The supporting strip  12  can be engaged at different support portions  114  according to different product such that the positions of the supporting pins  13  are different. 
     The above embodiment is described in detail. The specification adopts specific example to illustrate the principle and embodiment of the present invention. The illustration of the above embodiments is only used for helping understanding the method and core idea of the present invention; at the same time, for one person ordinary skilled in the art, based on the idea of the present invention, the specific embodiments and application range will be changed. In summary, the content of the specification should not be understood as a limitation of the present invention.