Support jig

Abstract

The present application relates to the technical field related to display module assembly, and specifically to a support jig for supporting a display panel assembly, wherein the display panel assembly includes a curved cover plate and a display panel, the curved cover plate includes a cover plate side wall and a cover plate body, the cover plate side wall surrounding the cover plate body; the cover plate body is fixedly attached to the display area of ​​the display panel, and the support jig includes a support member; the support member is formed with a through groove and an opening formed in the side wall of the through groove, the through groove is used to provide an operating space for the assembly of the display panel, and the side wall of the through groove of the support member is used to support the side wall of the cover plate. In this arrangement, when the support jig supports the display panel assembly with the display panel at the bottom and the curved cover plate at the top, the support jig is located below the curved cover plate, and the support member supports the curved cover plate by supporting the cover plate side wall. At this time, the bending area of ​​the display panel overlaps with the cover plate body and is located within the opening of the support member, avoiding compression of the bending area and improving product yield.

Description

Technical Field

[0001] The present application relates to the technical field related to display module assembly, and more specifically, to a supporting fixture. Background Art

[0002] The display device includes a display panel and a curved cover plate; the display panel is attached to the inner side of the curved cover plate. The display panel includes a display area for displaying, a bonding area for bonding to the IC and FPC, and a bending area between the display and bonding areas. After installation, the bending area is bent so that the bonding area is folded over to the back of the display panel to achieve a narrow bezel effect.

[0003] However, after the display panel is attached to the curved cover plate, multiple steps are required before the binding area is folded over to the back of the display panel. During these multiple steps, the bending area of ​​the display panel may be compressed, significantly reducing the reliability of the bending area of ​​the display panel and seriously affecting the product yield. Summary of the Invention

[0004] In view of this, the embodiments of the present application are directed to providing a supporting fixture to avoid pressure on the bending area of ​​the display panel.

[0005] The embodiment of the present application provides a support fixture for supporting a curved cover plate, which is used to support a display panel assembly. The display panel assembly includes a curved cover plate and a display panel. The curved cover plate includes a cover plate side wall and a cover plate body, and the cover plate side wall surrounds the cover plate body. The display panel includes a display area, a bending area, and a binding area. The cover plate body is fixed to the display area of ​​the display panel. The support fixture includes a support member.

[0006] The support member is formed with a through groove and an opening formed on the side wall of the through groove. The through groove is used to provide an operating space for assembling the display panel assembly, and the side wall of the support member through groove is used to support the cover plate side wall of the curved cover plate.

[0007] In one embodiment, a support plate is overlapped on the support member and extends outward corresponding to the opening position, and is used to support the binding area.

[0008] In one embodiment, the first side of the support plate is coplanar with the first side of the support member.

[0009] In one embodiment, an adhesive layer is provided on the first side surface of the support plate and the first side surface of the support member, the first side surface of the support member is used to be detachably bonded and fixed to the side wall of the cover plate through the adhesive layer, and the first side surface of the support plate is used to be detachably bonded and fixed to the binding area through the adhesive layer.

[0010] In one embodiment, a first vent hole is provided on the support member; one end of the first vent hole extends to the surface for supporting the side wall of the cover plate, and the other end of the first vent hole extends to the air extraction port;

[0011] Preferably, a second vent hole is provided on the support plate, one end of the second vent hole extends to the surface for supporting the binding area, and the other end of the second vent hole extends to the air extraction port.

[0012] In one embodiment, the support member is connected to an exhaust pipe, and the exhaust pipe has an exhaust port.

[0013] In one embodiment, the material of the support member and the support plate includes a material having a micro-through-hole structure, and the first vent hole and the second vent hole are formed by being connected by the micro-through-holes.

[0014] In one embodiment, the material having the micro-through-pore structure includes aluminum oxide and / or silicon carbide.

[0015] In one embodiment, the method further comprises: a connecting structure provided at the connection between the support plate and the support member, the connecting structure connecting the first vent hole in the support member and the second vent hole in the support plate respectively.

[0016] In one embodiment, a coating is provided on the support member and the support plate, and the coating is used to prevent air leakage.

[0017] The support member of the support jig provided in the present application can support the curved cover plate. When the support jig supports the display panel assembly, at this time, the display panel is at the bottom and the curved cover plate is placed on the top, the support jig is located below the curved cover plate, and the support member supports the curved cover plate by supporting the side wall of the cover plate. At this time, the bending area of ​​the display panel overlaps with the cover plate body and is located in the opening of the support member, avoiding the bending area from being compressed by the side wall of the curved cover plate, which can improve the reliability of the bending area of ​​the display panel and improve the product yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a display panel and a curved cover provided in an embodiment of the present application;

[0019] Figure 2 1 is a schematic structural diagram of another display panel and curved cover provided in an embodiment of the present application;

[0020] Figure 3 This is a structural diagram of a support fixture provided in an embodiment of the present application;

[0021] Figure 4 This is a schematic diagram of a method of using a support fixture provided in an embodiment of the present application;

[0022] Figure 5This is a schematic diagram of another method of using a support fixture provided in an embodiment of the present application;

[0023] Figure 6 This is a schematic structural diagram of another supporting fixture provided in an embodiment of the present application;

[0024] Figure 7 This is a schematic diagram of another method of using a support fixture provided in an embodiment of the present application;

[0025] Figure 8 This is a schematic diagram of another method of using a support fixture provided in an embodiment of the present application;

[0026] Figure 9 This is a schematic structural diagram of another supporting fixture provided in an embodiment of the present application;

[0027] Figure 10 This is a schematic structural diagram of another supporting fixture provided in an embodiment of the present application;

[0028] Figure 11 It is a structural schematic diagram of another supporting fixture provided in an embodiment of the present application. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0030] Application Overview

[0031] Reference Figure 1 and Figure 2 The display panel assembly includes a display panel 2 and a curved cover plate 1; the display panel 2 is attached to the inner side of the curved cover plate 1. The display panel 2 includes a display area for displaying, a bonding area 22 for bonding to the IC and FPC, and a narrow bending area 21 between the display area and the bonding area 22. After installation, the bonding area 22 is folded back to the back of the display area to achieve a narrow bezel effect.

[0032] However, after the display panel 2 is attached to the inner surface of the curved cover plate 1, there are multiple steps before the binding area 22 is folded to the back of the display area. Figure 1 As shown, when the curved cover plate 1 is on top and the display panel 2 is on the bottom, the curved cover plate 1 will press against the bend area 21 of the display panel 2. This situation greatly reduces the reliability of the bend area 21 of the display panel 2, seriously affecting the product yield. To solve the above problem, the present application provides a support fixture.

[0033] The display panel 2 provided in the embodiment of the present application is described below in a non-restrictive manner through several examples or embodiments. As described below, different features in these specific examples or embodiments can be combined with each other without conflicting with each other to obtain new examples or embodiments, and these new examples or embodiments also fall within the scope of protection of the present application.

[0034] An exemplary support fixture.

[0035] Reference Figure 3 and Figure 4 An exemplary embodiment of the present application provides a supporting jig for supporting a display panel assembly, wherein the curved cover plate 1 includes a cover plate side wall 11 and a cover plate body 12, wherein the cover plate side wall 11 surrounds the cover plate body 12; the display panel 2 includes a display area, a bending area 21 and a binding area 22, and the cover plate body 12 is fitted and fixed to the display area of ​​the display panel 2; the supporting jig includes a supporting member 3; a through groove and an opening 31 formed on the side wall of the through groove are formed on the supporting member 3, and the side wall of the through groove of the supporting member 3 is used to support the cover plate side wall 11 of the curved cover plate 1.

[0036] Specifically, the through-groove can be made free to provide operating space for assembling the display panel assembly, preventing the support member 3 from obstructing the display panel 2 and affecting subsequent processing of the display area of ​​the display panel 2. For example, the display area can be observed or operated through the through-groove.

[0037] Furthermore, in actual applications, when the support jig supports the display panel assembly, if the display panel is placed at the bottom and the curved cover is placed at the top, the cover body is fixed to the display area of ​​the display panel 2, and the bending area 21 of the display panel 2 overlaps with the cover body and is located in the opening 31 of the support member 3. The support member 3 is used to support the curved cover 1 to prevent the cover side wall 11 from compressing the bending area 21.

[0038] It should be noted that the shape of the support member 3 matches the shape of the curved cover plate 1. For example, when the cover plate side wall 11 of the curved cover plate 1 is a square ring, the support member 3 can be a square ring with a notch; when the cover plate side wall 11 of the curved cover plate 1 is a circular ring, the support member 3 can be a circular ring with a notch. The inner edge of the first side surface of the support member 3 is aligned with the inner edge of the cover plate side wall where the cover plate side wall 11 contacts the support member 3; or, the inner edge of the first side surface of the support member 3 is between the inner edge and the outer edge of the cover plate side wall where the cover plate side wall 11 contacts the support member 3. With this arrangement, the support member 3 can avoid the display area of ​​the display panel 2 to a certain extent. Among them, the first side surface of the support member 3 is the plane of the support member 3 used to support the cover plate side wall 11.

[0039] The design of the opening 31 on the support member 3 is mainly to allow the bending area 21 to be located within the opening 31 to avoid being compressed. Therefore, the size of the opening 31 matches the size of the bending area 21 so that the opening 31 can accommodate the bending area 21.

[0040] So set up, refer to Figure 4 and Figure 5 , (It should be noted that, Figure 4 The picture shown is a bottom view. Figure 4 The display panel 2 is not shown. Figure 5 For the Figure 4 (As shown in the image obtained by cutting along the cutting line AA' in FIG), when the display panel 2 is at the bottom and the curved cover plate 1 is placed on the top, the support member 3 supports the curved cover plate 1 by supporting the side wall 11 of the cover plate. At this time, the bending area 21 of the display panel 2 overlaps with the cover plate body and is located in the opening 31 of the support member 3, avoiding the bending area 21 from being compressed by the side wall 11 of the curved cover plate 1, thereby improving the reliability of the bending area 21 of the display panel 2 and improving the product yield.

[0041] Furthermore, in actual applications, the display panel 2 may also encounter the following problems: Figure 2 The problem shown. Figure 2 As shown, when the curved cover plate 1 is at the bottom and the display panel 2 is at the top, due to the gravity of the binding area 22 itself, an additional pulling force will be generated on the bending area 21 on the outside of the curved cover plate 1; at the same time, the top pressure of the curved cover plate 1 will also cause the BPL glue of the bending area 21 to break, causing the neutral layer of the bending area 21 to shift, and increasing the risk of the metal wire in the bending area 21 being broken under stress. In summary, the existence of the curved cover plate 1 and the pulling of the display panel 2 by the drooping of the binding area 22 will greatly reduce the reliability of the bending area 21, seriously affecting the product yield. In response to this situation, refer to Figure 6 and Figure 7 The support fixture provided in the present application also includes a support plate 4 connected to the support member 3; the support plate 4 is overlapped on the opening 31 and extends outward corresponding to the position of the opening 31. The support plate 4 is detachably fixed to at least the binding area 22 of the display panel 2, and can also be detachably fixed to the bending area 21 and the binding area 22 at the same time. The support plate 4 is at least used to support the binding area 22 to prevent the binding area 22 from driving the bending area 21 to compress the side wall 11 of the cover plate.

[0042] It should be noted that the design of the support plate 4 is mainly to avoid Figure 2 In the case shown, the binding area 22 pulls the bending area 21 under the influence of gravity, and at the same time, the cover side wall 11 of the curved cover 1 presses the bending area 21. Figure 7 and Figure 8 As shown ( Figure 8 For the Figure 7(Image obtained by cutting along the cutting line AA' in the figure), when the curved cover plate 1 is placed at the bottom, the support plate 4 will support the binding area 22, so that the binding area 22 is fixed on the support plate 4. At this time, the gravity on the binding area 22 and the support of the support plate 4 on the binding area 22 are balanced. The binding area 22 cannot pull the bending area 21. The bending area 21 is in a state of being almost free of force. The bending area 21 will not press the cover side wall 11 of the curved cover plate 1, and the cover side wall 11 of the curved cover plate 1 will not press the bending area 21. Avoid the following Figure 2 The situation shown greatly improves the reliability of the bending area 21, thereby improving the product yield.

[0043] In some embodiments, in order to better fix the curved cover plate 1 and the display panel 2 to the support plate 4 and the support member 3, the first side surface of the support plate 4 can be made coplanar with the first side surface of the support member 3; the first side surface of the support plate 4 is the side surface that contacts the binding area 22 when the support plate 4 is fixed to the binding area 22; the first side surface of the support member 3 is the side surface that contacts the cover plate side wall 11 when the support member 3 is fixed to the cover plate side wall 11. With this arrangement, the surface of the support plate 4 fixing the binding area 22 is coplanar with the surface of the support plate 4 fixing the cover plate side wall 11, which can make the binding area 22 coplanar with the supporting surface of the cover plate side wall 11 of the curved cover plate 1, so that the bending area 21 is at a relatively gentle angle, avoiding damage caused by excessive bending angle of the bending area 21. In other embodiments, the surface of the support plate 4 fixing the binding area 22 and the surface of the support plate 4 fixing the cover plate side wall 11 may not be coplanar.

[0044] It should be noted that the support plate 4 may only support the binding area 22 , or may support the binding area 22 and the bending area 21 at the same time.

[0045] Specifically, the support member 3 can be fixed to the cover side wall 11 by adhesion, and the support member 3 can also be fixed to the cover side wall 11 by adsorption; the support plate 4 can be fixed to the binding area 22 of the display panel 2 by adhesion, and the support plate 4 can also be fixed to the bending area 21 and / or binding area 22 of the display panel 2 by adsorption.

[0046] The bonding method involves attaching the display panel 2 and the curved cover plate 1 to a support jig via an adhesive layer. Specifically, the adhesive layer is made of a viscous material, which may be, but is not limited to, photoresist. When the support jig and the curved cover plate need to be separated, the photoresist can be cured by exposure to light, causing it to lose its stickiness, allowing the two to be separated. In this method, the support jig can be made of a transparent hard resin.

[0047] The specific implementation process of adsorption is as follows:

[0048] Reference Figure 9 、 Figure 10 and Figure 11The support fixture further includes: a first vent hole 71 provided on the support member 3; one end of the first vent hole 71 extends to the surface supporting the cover side wall 11, and the other end of the first vent hole 71 extends to the air extraction port; with this arrangement, when air is extracted from the air extraction port, the "surface supporting the cover side wall 11" can adhere to the cover side wall 11. When air is not extracted from the air extraction port, the "surface supporting the cover side wall 11" is separated from the cover side wall 11 adsorbed thereon.

[0049] Furthermore, the support plate 4 is provided with a second vent hole 72, one end of which extends to the surface supporting the binding area 22, and the other end of which extends to the air extraction port. This arrangement allows the "surface supporting the binding area" to adhere to the binding area 22 when air is extracted from the air extraction port. When air is not extracted from the air extraction port, the "surface supporting the binding area" detaches from the binding area 22 attached thereto.

[0050] It should be noted that the air extraction port can be provided on the support member 1. In this manner, the air extraction device can be directly connected to the air extraction port provided on the support member 1 to extract air. However, in this manner, the air extraction device is directly connected to the support member 1, and the connection between the air extraction device and the support member 1 may become loose during the movement of the support member 1.

[0051] Furthermore, the support fixture further includes an exhaust pipe 5 connected to the support member 1 and having an exhaust port. One end of the exhaust pipe 5 is connected to the first through hole 71 and the second through hole 72, and the other end is configured as an exhaust port. In this configuration, the end of the exhaust pipe 5 configured as the exhaust port can be used to connect to a preset exhaust device. When the exhaust device is in operation, the exhaust device extracts air through the exhaust port, the exhaust pipe 5, the first through hole 71, and the second through hole 72 to absorb the cover plate side wall 11 and the binding area 22.

[0052] With this arrangement, when the curved cover plate 1 and display panel 2 are placed on the support jig, the exhaust device can be activated. The exhaust device extracts air through the exhaust pipe 5, the first vent 71, and the second vent 72. Under the action of the exhaust, the curved cover plate 1 and display panel 2 are fixed to the support jig by atmospheric pressure, so that the support member 3 is fixed to the cover plate side wall 11 by suction, and the support plate 4 is fixed to the bending area 21 and / or binding area 22 of the display panel 2 by suction.

[0053] In practical applications, the first vent 71 and the second vent 72 can be formed using a material having a microporous structure. For example, a support jig can be made of a material having a microporous structure, so that the first vent 71 and the second vent 72 are connected by the microporous structure. Of course, it is also possible to use a material having a vent structure in certain locations of the support jig to form targeted vents. Specifically, materials having a microporous structure include aluminum oxide and / or silicon carbide.

[0054] It should be noted that, based on the integral molding of the support plate 4 and the support member 3, the micro-through hole structure within the support fixture is interconnected to form the first vent hole 71 and the second vent hole 72 that meet the above requirements. However, when the support plate 4 and the support member 3 are not integrally molded but are subsequently spliced, the micro-through hole structure within the support plate 4 and the support member 3 may not be interconnected. To address this situation, a connecting structure 6 can be provided at the connection between the support plate 4 and the support member 3. The connecting structure 6 connects the micro-through holes in the support member 3 and the micro-through holes in the support plate 4, respectively, so that the micro-through holes in the support plate 4 and the support member 3 are interconnected.

[0055] In actual applications, if the first vent 71 and the second vent 72 are connected by micro-through holes, during air extraction, there are multiple air inlets for the first vent 71 and multiple air inlets for the second vent 72. If these air inlets are not located on the "surface for supporting the cover side wall" and the "surface for supporting the binding area", then these air inlets will affect the adsorption effect of the support fixture on the display panel assembly.

[0056] Based on this, the support jig provided in the embodiment of the present application also includes a coating; the support member 3 and the support plate 4 are provided with a coating, and the coating is used to cover the "air inlets that are not located on the 'surface for supporting the cover plate side wall 11' and the 'surface for supporting the binding area 22'" to avoid air leakage during the extraction process. Specifically, in actual application, if the exhaust device starts to extract air, some of the air inlets are covered by the coating and cannot take in air, and some of the air inlets are covered by the display panel assembly and cannot take in air, a low-pressure environment (similar to a vacuum environment) will be formed in the first air vent 71 and the second air vent 72. At this time, the outside atmosphere will form a large pressure on the curved cover plate 1 and the display panel 2, so that the curved cover plate 1 and the display panel 2 are tightly adsorbed on the support jig. At this time, if the "air inlets that are not located on the 'surface for supporting the cover plate side wall 11' and the 'surface for supporting the binding area 22'" take in air (i.e., air leakage occurs), it will cause the air pressure in the first air vent 71 and the second air vent 72 to increase, affecting the adsorption effect.

[0057] The air extraction device may be a vacuum system.

[0058] In summary, the support jig provided in the present application comprises a support member 3 and a support plate 4, and the support plate 4 can be overlapped on the support member 3. The support member 3 is detachably fixed to the cover plate side wall 11 of the curved cover plate 1. The curved cover plate 1 comprises a cover plate side wall 11 and a cover plate body, and the cover plate side wall 11 surrounds the cover plate body. The support member 3 has an opening 31, and the cover plate body is fitted and fixed to the display area of ​​the display panel 2. The bending area 21 of the display panel 2 overlaps with the cover plate body and is located in the opening of the support member 3. The support member 3 is used to support the curved cover plate 1 to prevent the cover plate side wall 11 from compressing the bending area 21. The support plate 4 is at least detachably fixed to the binding area 22 of the display panel 2. The bending area 21 is located between the display area and the binding area 22. The support plate 4 is at least used to support the binding area 22 to prevent the binding area 22 from driving the bending area 21 to compress the cover plate side wall 11.

[0059] When the support fixture provided in this embodiment is used to support the curved cover plate 1 and the display panel 2, the bending angle of the display panel 2 is fixed. At this angle, whether the curved cover plate 1 or the display panel 2 is placed on top, the bending area 21 will not be compressed or pulled by the binding area 22, and the bending area 21 is at a relatively gentle bending angle, thereby avoiding damage to the bending area 21 due to compression, pulling or repeated bending, improving the reliability of the bending area 21, and improving the product yield.

[0060] Unless otherwise defined, technical or scientific terms used in the embodiments of this application should have the same ordinary meaning as those understood by persons of ordinary skill in the art to which this application belongs. The terms "first," "second," and similar expressions used in the embodiments of this application do not denote any order, quantity, or importance, but are merely provided to avoid confusion among constituent elements.

[0061] Unless the context requires otherwise, throughout this specification, the terms "including" and "comprising" are to be interpreted as open-ended and inclusive, meaning "including, but not limited to." Throughout this specification, terms such as "one embodiment," "some embodiments," "exemplary embodiments," "examples," "specific examples," or "some examples" are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of the present disclosure. The schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics may be included in any suitable manner in any one or more embodiments or examples. When describing some embodiments, the terms "coupled" and "connected," and their derivatives, may be used. For example, when describing some embodiments, the term "connected" may be used to indicate that two or more components are in direct physical or electrical contact with each other. For another example, when describing some embodiments, the term "coupled" may be used to indicate that two or more components are in direct physical or electrical contact with each other. However, the terms "coupled" or "communicatively coupled" may also refer to two or more components that are not in direct contact with each other but nonetheless cooperate or interact with each other. The embodiments disclosed herein are not necessarily limited to those described herein.

[0062] The basic principles of the present application have been described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, and effects mentioned in this application are merely illustrative and not restrictive, and it should not be assumed that these advantages, strengths, and effects are required of each embodiment of this application. In addition, the specific details disclosed above are merely illustrative and facilitating understanding, and are not restrictive. The above details do not limit this application to necessarily being implemented using the above specific details.

[0063] The block diagrams of devices, apparatuses, equipment, and systems referred to in this application are intended only as illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems may be connected, arranged, or configured in any manner.

[0064] It should also be noted that in the apparatus, device, and method of the present application, each component or each step can be decomposed and / or recombined, and such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

Claims

1. A support fixture for supporting a display panel assembly, wherein the display panel assembly comprises a curved cover plate and a display panel, wherein the curved cover plate comprises a cover plate sidewall and a cover plate body, wherein the cover plate sidewall surrounds the cover plate body; the display panel comprises a display area, a bending area, and a binding area; the cover plate body is fixedly attached to the display area of ​​the display panel, and wherein: The supporting jig includes a supporting member; The support member is formed with a through groove and an opening formed on a side wall of the through groove, the through groove is used to provide an operating space for assembling the display panel assembly, and the side wall of the through groove of the support member is used to support the cover plate side wall of the curved cover plate; The support fixture further includes a support plate overlapped on the support member and extending outward corresponding to the opening position, wherein the support plate is used to support the binding area; Wherein, the support is connected to an exhaust pipe, and the exhaust pipe has an exhaust port; The support member is provided with a first vent hole; one end of the first vent hole extends to the surface for supporting the side wall of the cover plate, and the other end of the first vent hole extends to the air extraction port; The support plate is provided with a second vent hole, one end of the second vent hole extends to the surface for supporting the binding area, and the other end of the second vent hole extends to the air extraction port; The material of the support member and the support plate includes a material having a micro-through-hole structure, and the first vent hole and the second vent hole are formed by connecting the micro-through-holes; The supporting fixture further includes a connecting structure provided at a connection between the supporting plate and the supporting member, wherein the connecting structure is connected to the first vent hole in the supporting member and the second vent hole in the supporting plate respectively.

2. The support jig according to claim 1, characterized in that: The first side surface of the support plate is coplanar with the first side surface of the support member.

3. The support jig according to claim 1, characterized in that: An adhesive layer is provided on the first side surface of the support plate and the first side surface of the support member. The first side surface of the support member is used to be detachably bonded and fixed to the side wall of the cover plate through the adhesive layer. The first side surface of the support plate is used to be detachably bonded and fixed to the binding area through the adhesive layer.

4. The support jig according to claim 1, characterized in that: The material having a micro-through-pore structure includes aluminum oxide and / or silicon carbide.

5. The supporting jig according to claim 1, characterized in that: The support member and the support plate are provided with a coating, and the coating is used to prevent air leakage.

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