WO2024092380A1 - 贴合设备及贴合方法 - Google Patents

贴合设备及贴合方法 Download PDF

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Publication number
WO2024092380A1
WO2024092380A1 PCT/CN2022/128509 CN2022128509W WO2024092380A1 WO 2024092380 A1 WO2024092380 A1 WO 2024092380A1 CN 2022128509 W CN2022128509 W CN 2022128509W WO 2024092380 A1 WO2024092380 A1 WO 2024092380A1
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WO
WIPO (PCT)
Prior art keywords
film
flexible
clamping
bonding
film material
Prior art date
Application number
PCT/CN2022/128509
Other languages
English (en)
French (fr)
Inventor
周国栋
王鹏
范荣坤
王家林
梁海涛
曾飞
孟雪
蒲强
周伟
叶礼鹏
何记
Original Assignee
京东方科技集团股份有限公司
成都京东方光电科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 京东方科技集团股份有限公司, 成都京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to CN202280003893.8A priority Critical patent/CN118284504A/zh
Priority to PCT/CN2022/128509 priority patent/WO2024092380A1/zh
Publication of WO2024092380A1 publication Critical patent/WO2024092380A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/02—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus

Definitions

  • the present disclosure relates to the field of display technology, and in particular to a bonding device and a bonding method.
  • OLED displays have been widely used in various electronic products, and with the development of curved screens, large curvature covers have become a new trend, which puts higher requirements on the full bonding method of curved cover plates and flexible display panels.
  • the present invention provides a laminating device and a laminating method.
  • a bonding device including a laminating mechanism, a supporting mechanism and a bearing mechanism, the laminating mechanism including a laminating mold, the laminating mold having an outwardly protruding laminating surface, the laminating surface being used to bond with a first film material to be fixed, and the shape of the laminating surface matches the shape of the first film material to be bonded;
  • the supporting mechanism including a supporting table and a flexible laminating pad, the flexible laminating pad being located on a side of the supporting table facing the laminating mechanism, the flexible laminating pad having a supporting surface, the shape of the supporting surface matching the shape of the first film material to be bonded, and the curvature of the supporting surface being greater than the curvature of the first film material to be bonded;
  • the bearing mechanism including a bearing film and a clamping jig, the bearing film being located between the laminating surface and the supporting surface, the side of the bearing film facing the laminating surface being used to
  • the pressing surface is provided with a plurality of vacuum adsorption holes, and the plurality of vacuum adsorption holes are evenly arranged on the pressing surface.
  • the pressing surface is provided with at least one pair of buckles, and the pair of buckles includes two buckles.
  • the two buckles are arranged on the periphery of multiple vacuum adsorption holes and are respectively arranged close to two opposite straight edges of the pressing surface.
  • the buckles can slide along the curved contour of the pressing surface.
  • the flexible fitting pad includes a main body and an overlapping portion, wherein the overlapping portion is arranged at the periphery of the main body, and the thickness of the overlapping portion is less than the thickness of the main body.
  • the fitting device also includes a stopper assembly, which cooperates with the overlapping portion to fix the position of the flexible fitting pad.
  • the block assembly includes a first block, which is fixedly connected to the support platform and adheres to the periphery of the overlapping portion along a first direction.
  • the first block has the same bending curvature as the flexible fitting pad.
  • the block assembly further includes a second block, which is connected to a side of the first block away from the support platform along a third direction, and the second block is pressed against the overlapping portion, and the third direction is the thickness direction of the supporting film.
  • the length of the first stopper is equal to the dimension of the flexible conformable pad along the first direction, and the number of the second stoppers is multiple, and the multiple second stoppers are evenly arranged along the first direction.
  • a third mounting hole is provided on the second stop block, and a fastener is provided to pass through the third mounting hole to fix the relative position of the second stop block and the first stop block.
  • the third mounting hole is a strip hole extending along the second direction, and the second direction is perpendicular to the first direction and the third direction.
  • the total thickness of the first stopper and the second stopper is smaller than the thickness of the main body.
  • the block assembly further includes a third block, and the third block is attached to the periphery of the overlapping portion along a second direction, and the second direction is perpendicular to the first direction.
  • a groove is provided on one side of the support platform close to the flexible conformable pad, and the orthographic projection of the flexible conformable pad on the support platform covers the groove.
  • the difference between the curvature of the laminating surface and the curvature of the second film material to be laminated is less than 50-150 mm.
  • the clamping fixture includes two clamping units, and the two clamping units are respectively used to clamp two opposite sides of the second film material to be bonded along the first direction.
  • the clamping unit includes a first clamping structure and a second clamping structure
  • the first clamping structure includes a first clamping portion
  • the second clamping structure includes a second clamping portion
  • the first clamping portion and the second clamping portion are parallel to the carrier film, and the carrier film is clamped between the first clamping portion and the second clamping portion.
  • a portion of the first clamping portion and/or the second clamping portion in contact with the carrier film is provided with a rough surface, and the rough surface includes a plurality of saw teeth distributed along a first direction, and the first direction is the length direction of the carrier film.
  • the first clamping structure also includes an arc-shaped connecting portion, which is arranged at one end of the first clamping portion close to the center of the supporting film along the first direction, and the arc-shaped connecting portion is bent in a direction away from the pressing surface.
  • the first clamping portion is located on the side of the supporting film away from the pressing surface.
  • the second clamping portion is connected to a sliding fitting portion, and an angle between the sliding fitting portion and the second clamping portion is less than 90 degrees.
  • a portion of the first clamping portion located outside the carrying film along the first direction is provided with a sliding groove, and the sliding fitting portion is slidably fitted in the sliding groove.
  • a bonding method wherein bonding is performed using any of the bonding devices described above, the method comprising:
  • the lamination mechanism drives the first film material to be laminated to move toward the direction close to the carrier film, so that the first film material to be laminated is completely laminated with the second film material to be laminated on the carrier film to form a film group to be laminated;
  • the clamping fixture and the pressing mechanism move synchronously toward the direction approaching the flexible bonding pad, driving the film group to be pressed and the carrier film to move synchronously toward the direction approaching the flexible bonding pad, until the pressing mechanism and the supporting mechanism completely press the film group to be pressed, the carrier film and the flexible bonding pad together.
  • the method further comprises: when the film group to be laminated, the carrier film and the flexible laminating pad are completely laminated together, maintaining the laminating pressure applied by the laminating mechanism for a preset period of time.
  • FIG. 1 is a three-dimensional structural diagram of a bonding device according to an embodiment of the present disclosure.
  • FIG. 2 is a three-dimensional structural diagram of the pressing mechanism involved in the embodiment of the present disclosure.
  • FIG. 3 is a three-dimensional structural diagram of the pressing mold involved in the embodiment of the present disclosure.
  • FIG. 4 is a three-dimensional structural diagram of a first film material to be bonded according to an embodiment of the present disclosure.
  • 5 to 7 are schematic diagrams of the positioning process of the first film material to be bonded by the lamination mechanism according to the embodiment of the present disclosure.
  • FIG. 8 is a three-dimensional structural diagram of the support mechanism involved in the embodiment of the present disclosure.
  • FIG. 9 is a schematic diagram of the connection between the support platform and the stopper assembly involved in the embodiment of the present disclosure.
  • FIG. 10 is a three-dimensional structural diagram of the flexible conformable pad according to an embodiment of the present disclosure.
  • FIG. 11 is a three-dimensional structural diagram of the supporting mechanism involved in the embodiment of the present disclosure.
  • FIG. 12 is a partial enlarged view of the supporting mechanism involved in the embodiment of the present disclosure.
  • FIG. 13 is a schematic flow chart of the bonding method according to an embodiment of the present disclosure.
  • FIG. 14 is a front view of the bonding device according to an embodiment of the present disclosure.
  • FIG. 15 is a schematic diagram of the state of the bonding device when the pressing mechanism involved in the embodiment of the present disclosure moves downward.
  • FIG. 16 is a schematic diagram of the state of a laminating device when the first film material to be laminated and the second film material to be laminated are pre-laminated according to an embodiment of the present disclosure.
  • FIG. 17 is a schematic diagram of the state of the bonding device when the first film material to be bonded contacts the center of the flexible bonding pad according to an embodiment of the present disclosure.
  • FIG. 18 is a schematic diagram of the state of the bonding device when the first film material to be bonded and the flexible bonding pad involved in the embodiment of the present disclosure are completely bonded.
  • FIG. 19 is a schematic diagram of the state of the bonding device during pressure maintenance according to an embodiment of the present disclosure.
  • a protective cover plate needs to be attached to the outside of the display screen to protect the OLED flexible panel.
  • the edge end surface of the OLED flexible panel is usually set as a curved surface, so that the image in the edge area can be displayed normally during display. Therefore, the edge end surface of the protective cover plate is also usually set as a curved surface to form a curved cover plate that matches the flexible panel with a curved surface.
  • “matching" means that the shapes are roughly the same.
  • the flexible bonding pad cannot be designed to be convex, so the carrier film and the flexible panel cannot be contoured through the above solution. If the carrier film and the flexible panel are not contoured, and the concave pad in the middle is directly used for bonding, there will be a gap between the carrier film and the flexible bonding pad, and the flexible panel cannot be stably placed on the flexible bonding pad, which affects the visual alignment.
  • the curved cover plate and the flexible panel are likely to come into contact prematurely during the bonding process, which will still cause quality risks such as bubbles and wrinkles.
  • the embodiment of the present disclosure provides a laminating device.
  • the laminating device includes a laminating mechanism 1, a supporting mechanism 2 and a bearing mechanism 3.
  • the laminating mechanism 1 includes a laminating mold 11.
  • the laminating mold 11 has a laminating surface 111 protruding outward.
  • the laminating surface 111 is used to be laminated with a first film material 4 to be fixed.
  • the shape of the laminating surface 111 matches the shape of the first film material 4 to be laminated.
  • the supporting mechanism 2 includes a supporting platform 21 and a flexible laminating pad 22.
  • the flexible laminating pad 22 is located on the supporting platform 21 facing the laminating mechanism.
  • the flexible bonding pad 22 has a supporting surface 2211, the shape of the supporting surface 2211 matches the shape of the first film material 4 to be bonded, and the curvature of the supporting surface 2211 is greater than the curvature of the first film material 4 to be bonded;
  • the bearing mechanism 3 includes a bearing film 31 and a clamping fixture, the bearing film 31 is located between the pressing surface 111 and the supporting surface 2211, the side of the bearing film 31 facing the pressing surface 111 is used to attach the second film material 5 to be bonded, and the clamping fixture is clamped at the edge of the bearing film 31.
  • the laminating mechanism 1 drives the first film material 4 to be laminated to move toward the direction close to the carrier film 31, and drives the first film material 4 to be laminated and the second film material 5 to be laminated to achieve gradual contact from the middle to both ends, and finally makes the first film material 4 to be laminated and the second film material 5 to be laminated located on the carrier film 31 completely laminated to form a film group to be laminated.
  • the clamping fixture and the laminating mechanism 1 move synchronously toward the direction close to the flexible laminating pad 22, and drive the film group to be laminated and the carrier film 31 to move synchronously toward the direction close to the flexible laminating pad 22.
  • the flexible laminating pad 22 and the carrier film 31 sequentially contact from the middle to both ends, and the bubbles between the carrier film 31 and the flexible laminating pad 22 are squeezed out from both sides. There are no bubbles or wrinkles between the first film material 4 to be laminated and the second film material 5 to be laminated, and the quality of the film group formed by laminating is relatively stable.
  • the laminating device is described in detail below in conjunction with specific implementation methods.
  • the pressing mechanism 1 has a first connecting surface and a pressing surface 111.
  • the first connecting surface is a plane, and the pressing surface 111 is arranged opposite to the first connecting surface.
  • the pressing surface 111 is a curved surface convex to the side away from the first connecting surface.
  • the shape of the pressing surface 111 matches the shape of the concave surface of the first film material 4 to be bonded.
  • the curvature of the pressing surface 111 gradually changes along the first direction, and of course, it can also gradually change along the second direction.
  • the second direction is perpendicular to the first direction.
  • the first direction can be the length direction of the pressing mechanism 1, and the second direction can be the width direction of the pressing mechanism 1.
  • the curvature of the pressing surface 111 matches the curvature design of the first film material 4 to be bonded.
  • the pressing mechanism 1 also has a first side surface and a second side surface, which connect the first connecting surface and the pressing surface 111 together, the four sides of the first connecting surface are all straight sides, the two opposite sides of the pressing surface are straight sides, and the other two opposite sides are arcuate sides, the two first side surfaces connect the two arcuate sides of the pressing surface with two of the straight sides of the first connecting surface, and the two second side surfaces connect the two straight sides of the pressing surface with the other two straight sides of the first connecting surface.
  • the lamination surface 111 is provided with a plurality of vacuum adsorption holes 112, and negative pressure is formed in the vacuum adsorption holes 112 by suction, so as to adsorb the first film material 4 to be laminated that blocks the vacuum adsorption holes 112, so that the first film material 4 to be laminated is laminated on the lamination surface 111.
  • the plurality of vacuum adsorption holes 112 are evenly distributed on the lamination surface 111, so that each part of the first film material 4 to be laminated is subjected to the adsorption force, so as to better ensure the lamination effect between the first film material 4 to be laminated and the lamination surface 111, and prevent the first film material 4 to be laminated from falling off.
  • a plurality of vacuum adsorption holes 112 are arranged in an array on the lamination surface 111 to form a vacuum adsorption hole array.
  • the first film material 4 to be bonded is usually a rigid film material, and even if the adsorption forces of different vacuum adsorption holes 112 are slightly different, the first film material 4 to be bonded will not have wrinkles.
  • the shape of the vacuum adsorption hole array matches the first film material 4 to be bonded. In this embodiment, the shape of the first film material 4 to be bonded is rectangular, so the vacuum adsorption hole array is a rectangular array. When the shape of the film material to be bonded is circular, the vacuum adsorption hole array can also be a circular array, which is not specifically limited here.
  • the pressing surface 111 is also provided with two pairs of buckles 12, each pair of buckles 12 includes two buckles 12, and the two buckles 12 are arranged on the periphery of the vacuum adsorption hole array.
  • the two buckles 12 are respectively arranged close to the two opposite straight edges of the pressing surface 111.
  • the buckles 12 can slide along the curved contour of the first film material 4 to be bonded to change its position in the first direction.
  • the first film material 4 to be bonded is adsorbed through the vacuum adsorption holes 112 on the laminating surface 111.
  • the buckle 12 is driven to slide along the curved contour of the laminating surface 111, so that the buckle 12 abuts against the straight edge of the first film material 4 to be bonded, and the buckle 12 is continued to be driven to slide, which can push the first film material 4 to be bonded to slide along the laminating surface 111.
  • a slide rail matching the curved contour of the laminating surface 111 can be set to make the buckle 12 slide along the slide rail.
  • the slide rail can also be set to be retractable. After the first film material 4 to be bonded is adjusted into place, the slide rail is retracted to avoid interference with the movement of the laminating mechanism 1.
  • a driving mechanism is provided to drive the position of the buckle 12.
  • the driving mechanism may include a clamping cylinder and a limit block, the limit block is respectively connected to the buckle 12 and the action end of the cylinder, the limit block is driven by the cylinder, and the position of the buckle 12 is controlled by the limit block.
  • other driving mechanisms may also be used, for example: a gear cooperates with a rack, the gear rotates to drive the rack to translate, and the rack drives the buckle 12 to move.
  • a cam-link mechanism may also be used, the cam drives the connecting rod, and the connecting rod drives the buckle 12 to move.
  • the buckle 12 may include a first clamping portion and a second clamping portion connected to each other, the second clamping portion and the first clamping portion may be integrally formed, and the second clamping portion is perpendicular to the first clamping portion.
  • the first film material 4 to be laminated When the buckle 12 is continuously driven to slide along the curved contour of the lamination surface 111, the first film material 4 to be laminated can be pushed to slide along the curved contour of the lamination surface 111, thereby adjusting the fixed position of the first film material 4 to be laminated along the first direction, ensuring that the position with the smallest curvature of the first film material 4 to be laminated first contacts the second film material 5 to be laminated, and avoiding the problem that the first film material 4 to be laminated and the lamination surface 111 of the lamination mechanism 1 have a relative angle, resulting in the problem that the accuracy cannot be compensated. It can be understood that when adjusting the lamination position of the first film material 4 to be laminated, the first film material 4 to be laminated will not be damaged while ensuring that its curvature remains unchanged.
  • the first film material 4 to be bonded is not affected by the curvature along the second direction, so there is no need to use the buckle 12 to control the position of the first film material 4 to be bonded in the second direction.
  • the position of the second film material 5 to be bonded can be adaptively adjusted to realign the second film material 5 with the first film material 4 to be bonded.
  • a third clamping portion (not shown in the figure) can also be provided, and the third clamping portion is perpendicularly connected to the first clamping portion and the second clamping portion, and the position of the first film material 4 to be bonded along the second direction is adjusted by the third clamping portion abutting against the arcuate edge of the first film material 4 to be bonded.
  • the support mechanism 2 includes a support platform 21 and a flexible laminating pad 22, the flexible laminating pad 22 is located on the side of the support platform 21 facing the laminating mechanism 1, and the flexible laminating pad 22 has a support surface 2211 and a second connecting surface, the support surface 2211 is a curved surface concave toward the side close to the second connecting surface, and the shape of the support surface 2211 matches the convex shape of the first film material 4 to be laminated. It can be understood that the direction of the curvature change of the support surface 2211 matches the curvature of the laminating portion.
  • the support mechanism 2 also has a third side surface and a fourth side surface, which connect the second connection surface and the support surface 2211 together, the third side surface and the first side surface are located in the same plane, and the fourth side surface and the second side surface are located in the same plane.
  • the four sides of the second connection surface are all straight sides, the two sides opposite to the support surface 2211 are straight sides, and the other two sides opposite to each other are arcuate sides, the two third side surfaces connect the two arcuate sides of the support surface 2211 with two of the straight sides of the second connection surface together, and the two fourth side surfaces connect the two straight sides of the support surface 2211 with the other two straight sides of the second connection surface together.
  • the flexible bonding pad 22 is made of silicone, has excellent electrical insulation properties, and a surface resistance of 1012 ⁇ cm, which can effectively avoid electrical breakdown of the membrane group; the deformation of the flexible bonding pad 22 under normal conditions can reach 40%, and it has excellent compression deformation performance. At the same time, it is not easy to cause plastic deformation and affect the bonding quality.
  • the first film material 4 to be bonded and the second film material 5 to be bonded are generally bonded together by an optical adhesive layer 6.
  • the area of the second film material 5 to be bonded is usually larger than the area of the first film material 4 to be bonded, and the area of the optical adhesive layer 6 is usually smaller than the area of the second film material 5 to be bonded.
  • the size of the flexible bonding pad 22 is smaller than the size of the first film material 4 to be bonded, but larger than the size of the optical adhesive layer 6 (OCA), because the core purpose of the flexible bonding pad 22 is to squeeze the optical adhesive layer 6 between the first film material 4 to be bonded and the second film material 5 to be bonded, so as to ensure that the optical layer is tightly bonded to the first film material 4 to be bonded and the second film material 5 to be bonded.
  • OCA optical adhesive layer 6
  • the curvature of the flexible bonding pad 22 is slightly smaller than the maximum curvature of the first film material 4 to be bonded, and the difference between the curvature of the bonding surface and the curvature of the second film material 5 to be bonded is less than 50-150mm, so as to ensure that the two ends of the first film material 4 to be bonded and the two ends of the flexible bonding pad 22 can be completely bonded to ensure tightness.
  • the flexible bonding pad 22 can be set to a structure with a thick middle and thin edges along the second direction.
  • the flexible bonding pad 22 includes a main body 221 and an overlap portion 222, the overlap portion 222 is arranged at the periphery of the main body 221, and the thickness of the overlap portion 222 is less than the thickness of the main body 221.
  • the bonding device also includes a stopper assembly 23, which cooperates with the overlap portion 222, and the stopper assembly 23 limits the position of the overlap portion 222 in the first direction, the second direction and the third direction respectively, thereby fixing the position of the flexible bonding pad 22 on the support platform 21.
  • the stopper assembly 23 includes a first stopper 231, which is fixedly connected to the support platform 21.
  • the first stopper 231 is attached to the periphery of the overlap portion 222 along the first direction.
  • the size of the first stopper 231 along the first direction is substantially equal to the size of the flexible bonding pad 22 along the first direction, and the curvature change of the first stopper 231 is the same as the curvature change of the bonding substrate.
  • the size of the first stopper 231 along the second direction is less than or equal to the distance between the edge of the flexible bonding pad 22 and the edge of the support platform 21 along the second direction, and the size of the first stopper 231 along the third direction is equal to the thickness of the overlap portion 222 of the flexible bonding pad 22.
  • the first stop block 231 is provided with a plurality of first mounting holes
  • the support platform 21 is provided with second mounting holes corresponding to the first mounting holes one by one.
  • Fasteners can be arranged to pass through the first mounting holes and the second mounting holes to fix the relative position of the first stop block 231 and the support platform 21, thereby ensuring that the flexible bonding pad 22 will not be displaced along the second direction.
  • the stopper assembly 23 further includes a second stopper 232, which is connected to a side of the first stopper 231 away from the support platform 21 along the third direction, and is pressed against the overlapping portion 222.
  • the second stopper 232 overlaps both the first stopper 231 and the overlapping portion 222 in the second direction.
  • the second stopper 232 limits the degree of freedom of the flexible bonding pad 22 along the third direction, thereby ensuring that the position of the flexible bonding pad 22 in the third direction will not be offset.
  • the second stopper 232 is provided with a third mounting hole, and the fastener can be passed through the third mounting hole, the second mounting hole and the first mounting hole in sequence to fix the relative positions of the second stopper 232, the first stopper 231 and the support platform 21.
  • the first mounting hole can be set as a strip hole extending along the second direction, and the position of the second stopper 232 can be freely adjusted in the second direction by adjusting the position of the fastener in the first mounting hole, thereby ensuring the tightness of the flexible fitting pad 22.
  • the total thickness of the first stopper 231 and the second stopper 232 is less than the thickness of the main body 221.
  • the total thickness of the first stopper 231 and the second stopper 232 is too large to prevent the pressing mechanism 1 from continuing to move downward, thereby affecting the pressing process.
  • the stopper assembly 23 may further include a third stopper 233, which is attached to the periphery of the overlap portion 222 along the second direction, and can limit the degree of freedom of the flexible bonding pad 22 in the first direction.
  • the relative position of the third stopper 233 and the support platform 21 is fixed to ensure that the flexible bonding pad 22 will not be offset in the first direction.
  • the support platform 21 has the same shape as the flexible bonding pad 22, and the curvature of the support platform 21 can be equal to the curvature of the flexible bonding pad 22.
  • the pressure in the middle of the membrane group is 0.2Mpa, and the pressure at the four corners is only 0.08Mpa. In this state, the four corners of the membrane group are almost not under pressure, and there are problems of false bonding and infiltration of atmospheric bubbles.
  • the pressing mechanism 1 continues to pressurize the membrane group, the pressure in the middle of the membrane group is too large, because the first membrane material 4 to be bonded is a rigid membrane material, which may cause the first membrane material 4 to be bonded to be fractured, and there is not much increase in the pressure on the four corners of the membrane group.
  • a groove 211 is provided on one side of the support platform 21 close to the flexible bonding pad 22, and the orthographic projection of the flexible bonding pad 22 on the support platform 21 covers the groove 211, so the area of the groove 211 is smaller than the area of the flexible bonding pad 22.
  • the depth of the groove 211 is 2mm and the pressure in the middle of the membrane group is 0.18Mpa, the pressure at the four corners of the membrane group reaches 0.8Mpa. It can be understood that when the membrane group and the carrier film 31 are bonded, the four corners of the membrane group are all subjected to relatively large pressure.
  • the depth of the groove 211 can be adjusted, and the pressure on the middle and four corners of the membrane group is measured.
  • the ratio of the pressure on the four corners of the membrane group to the pressure on the middle of the membrane group is the largest, the depth of the groove 211 is the optimal value.
  • the specific method of adjusting the depth of the groove 211 can be to attach an adhesive tape in the groove 211 to shorten the groove depth.
  • the supporting mechanism 3 includes a supporting film 31 and a clamping jig.
  • the supporting film 31 is located between the pressing surface 111 of the pressing mechanism 1 and the supporting surface 2211 of the supporting mechanism 2.
  • the clamping jig is clamped at the edge of the supporting film 31.
  • the side of the supporting film 31 facing the pressing surface 111 is used to attach the second film material 5 to be bonded.
  • the second film material 5 to be bonded is a flexible film material.
  • the clamping fixture may include two clamping units 32, and the two clamping units 32 are respectively used to clamp the two opposite sides of the second film material 5 to be bonded along the first direction.
  • the clamping unit 32 may include a first clamping structure 321 and a second clamping structure 322.
  • the first clamping structure 321 includes a first clamping portion 3211
  • the second clamping structure 322 includes a second clamping portion 3221.
  • the first clamping portion 3211 and the second clamping portion 3221 are parallel to the supporting film 31, and the supporting film 31 is clamped between the first clamping portion 3211 and the second clamping portion 3221.
  • the portion where the first clamping portion contacts the carrier film 31 may be set as a rough surface, and the portion where the second clamping portion contacts the carrier film 31 may be set as a rough surface.
  • the portions where the first clamping portion and the second clamping portion contact the carrier film 31 may be set as rough surfaces.
  • the rough surface may include a plurality of saw teeth distributed along the first direction, and the saw teeth may be distributed continuously or at intervals, which is not specifically limited here.
  • the first clamping structure 321 also includes an arc-shaped connecting portion 3212, which is disposed at one end of the first clamping portion close to the center of the carrier film 31 along the first direction, and the arc-shaped connecting portion 3212 is bent in a direction away from the pressing surface 111.
  • the first clamping portion can be disposed on a side of the carrier film 31 away from the pressing surface 111, and the second clamping portion can be disposed on a side of the carrier film 31 close to the pressing surface 111.
  • the carrier film 31 is pulled to the same arc as the arc-shaped connecting portion 3212, and at this time, the second bonding film material contacts the arc-shaped connecting portion 3212, which can relieve the tensile stress it is subjected to.
  • the first clamping structure 321 also includes a sliding fitting portion 3222, which is connected to the second clamping portion 3221.
  • the distance between the sliding fitting portion 3222 and the carrier film 31 along the first direction can be used to control the clamping amount of the first clamping portion on the carrier film 31. While ensuring effective clamping of the carrier film 31, as much bearing area as possible is reserved to leave more freedom for adjusting the position of the second film material 5 to be bonded.
  • the included angle between the sliding fitting part 3222 and the second clamping part 3221 is less than 90 degrees, and only one obliquely arranged clamping cylinder is required.
  • the clamping cylinder can drive the second clamping part 3221 to move simultaneously in the first direction and the third direction by applying force once, which not only has high uniformity of force application, but also has good clamping stability, and can reduce the clamping time of the carrier film 31 to a certain extent, and improve the lamination efficiency of the film group as a whole.
  • the third direction is perpendicular to the first direction and the second direction, that is, the third direction is the thickness direction of the pressing mechanism 1.
  • the first clamping portion is provided with a sliding groove 3213 at the portion located outside the carrier film along the first direction, and the sliding fitting portion 3222 is slidingly fitted in the sliding groove 3213.
  • the sliding groove 3213 is arranged to be inclined, and the inclination angle is the same as the inclination angle of the sliding fitting portion 3222, that is, when the clamping fixture clamps the carrier film 31, the sliding fitting portion 3222 and the two side walls of the sliding groove 3213 are parallel to each other.
  • the aforementioned film group can be a large-sized vehicle display module.
  • the first film material 4 to be bonded is a curved cover plate
  • the second film material 5 to be bonded is a flexible panel, which can be an OLED display panel. It can be understood that the vehicle display module bonded by the bonding device has no interference from bubbles or wrinkles, and has good display quality.
  • the length of the first film material 4 to be laminated is 389 mm
  • the width of the first film material 4 to be laminated is 219 mm
  • the thickness of the first film material 4 to be laminated is 1 mm
  • the depth of the first film material 4 to be laminated is 43.5 mm
  • the curvature of the first film material 4 to be laminated gradually changes between 250 and 750 mm
  • the curvature of the deepest part of the first film material 4 to be laminated is the smallest, which is 250 mm
  • the curvature of the two ends of the first film material 4 to be laminated is the largest, which is 750 mm.
  • the length of the second film material 5 to be laminated is 332 mm, and the width of the second film material 5 to be laminated is 213 mm.
  • the optical adhesive layer 6 is disposed between the first film material 4 and the second film material 5 to be bonded, and the first film material 4 and the second film material 5 to be bonded are bonded together by the optical adhesive layer 6.
  • the length of the optical adhesive layer 6 is 331.6 mm, and the width of the optical adhesive layer 6 is 210 mm.
  • the curvature of the laminating surface 111 of the laminating mechanism 1 is 250-750 mm.
  • a plurality of vacuum adsorption holes 112 are arranged in a 17 ⁇ 25 rectangular array on the laminating surface 111, and the diameter of the vacuum adsorption through hole can be 0.8-1.2 mm. Specifically, 25 vacuum adsorption holes 112 are arranged along the first direction, and the spacing between two adjacent vacuum adsorption holes 112 is 8-12 mm. 17 vacuum adsorption holes 112 are arranged along the second direction, and the spacing between two adjacent vacuum adsorption holes 112 is 10-15 mm. Normal adsorption of 0.16-0.24 Mpa on the entire surface can be achieved, which can effectively avoid the first film material 4 to be bonded from falling off.
  • the length of the flexible conformable pad 22 is 337 mm, the width of the flexible conformable pad 22 is 230 mm, and the depth of the flexible conformable pad 22 is 38.8 mm.
  • the flexible conformable pad 22 includes a main body 221 and an overlapping portion 222 along the second direction.
  • the lengths of the main body 221 and the overlapping portion 222 along the first direction are both 337 mm, the width of the main body 221 is 317 mm, the width of the overlapping portion 222 is 10 mm, the thickness of the main body 221 is 8.5 mm, and the thickness of the overlapping portion 222 is 3.5 mm.
  • the flexible bonding pad 22 when the flexible bonding pad 22 is not installed with the support platform 21, the flexible bonding pad 22 will undergo elastic deformation.
  • the maximum curvature of the first film material 4 to be bonded can be 600-700 mm, and the maximum curvature of the flexible bonding pad 22 will be released from 600-700 mm to between 750-850 mm.
  • a corresponding transfer fixture matching the flexible bonding pad 22 is required.
  • the length of the support surface 2211 of the pressing mechanism 1 can be set to 357 mm, the width of the support surface 2211 of the pressing mechanism 1 can be set to 250 mm, a 2 mm groove 211 is provided on the support surface 2211, and the orthographic projection of the flexible bonding pad 22 on the support surface 2211 covers the groove 211.
  • the portion of the support surface 2211 where the flexible bonding pad 22 is provided can be provided with a block assembly 23, and the block assembly 23 includes a first block 231, a second block 232 and a third block 233.
  • the first block 231 is provided at the outer side of the overlapping portion 222 along the first direction
  • the second block 232 is provided at a side of the first block 231 away from the support platform 21, and the second block 232 overlaps with both the first block 231 and the overlapping portion 222 in the second direction.
  • the third block 233 is attached to the outer periphery of the overlapping portion 222 along the second direction.
  • the length of the first stopper 231 is 337 mm, the width of the first stopper 231 is 10 mm, the thickness of the first stopper 231 is 3.5 mm, the maximum curvature is 600-700 mm, the thickness of the first stopper 231 is the same as the thickness of the overlap portion 222 of the flexible contact pad 22, and the material of the first stopper 231 is metal.
  • the length of the second stopper 232 is 18 mm, the width of the second stopper 232 is 5 mm, the thickness of the second stopper 232 is 2 mm, and the material of the second stopper 232 is also metal.
  • the sum of the thickness of the first stopper 231 and the thickness of the second stopper 232 is 5.5 mm, which is obviously less than the thickness of the main body 221 of the flexible contact pad 22.
  • the length of the third stopper 233 is 230 mm, the width of the third stopper 233 can be 10 mm, and the thickness of the third stopper 233 can be 3.5 mm.
  • the present disclosure also provides a bonding method, which uses any of the bonding devices described above to perform bonding. As shown in FIG13 , the method may include:
  • Step S10 the lamination mechanism drives the first film material to be laminated to move in a direction close to the carrier film, so that the first film material to be laminated is completely laminated with the second film material to be laminated on the carrier film to form a film group to be laminated;
  • step S20 the clamping fixture and the pressing mechanism move synchronously toward the direction approaching the flexible bonding pad, driving the film group to be pressed and the carrier film to move synchronously toward the direction approaching the flexible bonding pad, until the pressing mechanism and the supporting mechanism 2 completely press the film group to be pressed, the carrier film and the flexible bonding pad together.
  • the beneficial effects of the bonding method can refer to the beneficial effects of the bonding device, which will not be described in detail here.
  • the relative positions of the first film material to be laminated, the second film material to be laminated and the flexible laminating pad need to be determined.
  • the concave surface of the first film material 4 to be bonded is firstly attached to the bonding surface of the bonding mechanism, and vacuum is drawn through the vacuum adsorption hole, so that the first film material 4 to be bonded is adsorbed on the bonding surface.
  • the bonding accuracy of the first film material 4 to be bonded is observed.
  • the driving buckle 12 slides along the curved contour of the bonding surface, which can push the first film material 4 to be bonded to slide along the bonding surface, and adjust the relative position of the first film material 4 to be bonded and the bonding surface along the first direction until the curvature of the first film material 4 to be bonded and the bonding surface are completely matched.
  • the position of the second film material 5 to be laminated is adaptively adjusted along the second direction so that the second film material 5 to be laminated and the first film material 4 to be laminated are aligned again.
  • a first shell is arranged on the side of the laminating mechanism away from the supporting mechanism
  • a second shell is arranged on the side of the supporting mechanism away from the laminating mechanism, and the second shell cooperates with the first shell to form a closed laminating space.
  • the first film material 4 and the second film material 5 to be laminar need to be laminarized in a vacuum environment, so it is necessary to ensure that the laminating space is in a vacuum state.
  • the first film material to be laminated and the second film material to be laminated are laminated.
  • step S10 the middle of the first film material to be bonded (the part with the smallest curvature) contacts the middle of the second film material to be bonded first, and when the pressing mechanism drives the first film material to be bonded to continue to move toward the direction close to the carrier film, the first film material to be bonded and the second film material to be bonded are driven to gradually contact from the middle to both ends.
  • the carrier film is pulled to the same curvature as the arc-shaped connecting portion, and at this time, the second bonding film is in contact with the arc-shaped connecting portion of the first clamping structure.
  • step S20 the clamping fixture and the pressing mechanism move synchronously toward the direction close to the flexible bonding pad 22, driving the film group to be pressed and the carrier film 31 to move synchronously toward the direction close to the flexible bonding pad 22. Since the curvature of the flexible bonding pad 22 is greater than the curvature of the first film material 4 to be pressed, the middle of the carrier film 31 and the flexible bonding pad 22 are first contacted to ensure stress extrusion in the middle area of the film group.
  • the method may further include step S30 , when the to-be-laminated film group, the carrier film and the flexible laminating pad are completely laminated together, maintaining the laminating pressure applied by the laminating mechanism for a preset time period.
  • the preset time length of the pressure holding can further ensure the adhesion effect of the first film material to be bonded 4 and the second film material to be bonded 5.
  • the preset time length can usually be set to 5 seconds.

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Abstract

本公开是关于一种贴合设备及贴合方法，贴合设备的压合机构（1）带动第一待贴合膜材（4）向靠近承载膜（31）的方向运动，带动第一待贴合膜材（4）与第二待贴合膜材（5）实现从中间向两端的逐渐接触，最终使得第一待贴合膜材（4）与第二待贴合膜材（5）完全贴合，形成待压合膜组。夹持治具和压合机构（1）同步向靠近柔性贴合衬垫（22）的方向运动，使得柔性贴合衬垫（22）与承载膜（31）由中间向两端的顺序接触，将承载膜（31）与柔性贴合衬垫（22）之间的气泡从两侧挤出。第一待贴合膜材（4）与第二待贴合膜材（5）之间无气泡或褶皱，贴合形成的膜组的品质较为稳定。

Description

贴合设备及贴合方法 技术领域
本公开涉及显示技术领域，具体而言，涉及一种贴合设备及贴合方法。
背景技术
目前，OLED显示屏已经广泛的应用于各种电子产品中，且随着曲面屏的开发，大弯折曲率盖板成为一种新趋势，这就对曲面盖板与柔性显示面板的全贴合方法提出了更高的要求。
对于凸形贴合面的玻璃盖板与柔性面板的贴合过程中，容易出现气泡或褶皱，影响贴合效果，进而影响贴合形成的显示模组的品质。
需要说明的是，在上述背景技术部分公开的信息仅用于加强对本公开的背景的理解，因此可以包括不构成对本领域普通技术人员已知的现有技术的信息。
发明内容
本公开提供一种贴合设备及贴合方法。
根据本公开的一个方面，提供一种该贴合设备，包括压合机构、支撑机构和承载机构，压合机构包括压合模具，压合模具具有向外凸出的压合面，压合面用于与待固定的第一待贴合膜材贴合，压合面的形状与第一待贴合膜材的形状相匹配；支撑机构包括支撑台和柔性贴合衬垫，柔性贴合衬垫位于支撑台朝向压合机构的一侧，柔性贴合衬垫具有支撑面，支撑面的形状与第一待贴合膜材的形状相匹配，支撑面的曲率大于第一待贴合膜材的曲率；承载机构包括承载膜和夹持治具，承载膜位于压合面与支撑面之间，承载膜朝向压合面的一侧用于贴附第二待贴合膜材，夹持治具夹持于承载膜的边缘。
在本公开的一个实施例中，压合面设有多个真空吸附孔，多个真空吸附孔均匀地排布于压合面上。
在本公开的一个实施例中，压合面设有至少一对卡扣，一对卡扣包括两个卡扣，两个卡扣设于多个真空吸附孔的外围，且分别靠近压合面相对的两条直边设置，卡扣能沿压合面的弯曲轮廓滑动。
在本公开的一个实施例中，柔性贴合衬垫包括主体部和搭接部，搭接部设于主体部的外围，搭接部的厚度小于主体部的厚度，贴合设备还包括挡块组件，挡块组件与搭接部配合，以固定柔性贴合衬垫的位置。
在本公开的一个实施例中，挡块组件包括第一挡块，第一挡块与支撑台固定连接，第一挡块沿第一方向贴合于搭接部的外围，第一挡块与柔性贴合衬垫的弯曲弧度相同。
在本公开的一个实施例中，挡块组件还包括第二挡块，第二挡块沿第三方向连接于第一挡块远离支撑台的一侧，第二挡块压紧于搭接部上，第三方向为承载膜的厚度方向。
在本公开的一个实施例中，第一挡块的长度等于柔性贴合衬垫沿第一方向的尺寸，第二挡块的数量为多个，多个第二挡块沿第一方向均匀设置。
在本公开的一个实施例中，第二挡块上设有第三安装孔，设置紧固件穿过第三安装孔，将第二挡块与第一挡块的相对位置固定，第三安装孔为沿第二方向延伸的条形孔，第二方向垂直于第一方向和第三方向。
在本公开的一个实施例中，第一挡块和第二挡块的总厚度小于主体部的厚度。
在本公开的一个实施例中，挡块组件还包括第三挡块，第三挡块沿第二方向贴合于搭接部的外围，第二方向垂直于第一方向。
在本公开的一个实施例中，支撑台靠近柔性贴合衬垫的一面设有凹槽，柔性贴合衬垫在支撑台上的正投影覆盖凹槽。
在本公开的一个实施例中，贴合面的曲率与第二待贴合膜材的曲率的差值小于50-150mm。
在本公开的一个实施例中，夹持治具包括两个夹持单元，两个夹持单元分别用于夹持第二待贴合膜材沿第一方向相对的两边。
在本公开的一个实施例中，夹持单元包括第一夹持结构和第二夹持结构，第一夹持结构包括第一夹紧部，第二夹持结构包括第二夹紧部， 第一夹紧部和第二夹紧部平行于承载膜，承载膜夹紧于第一夹紧部与第二夹紧部之间。
在本公开的一个实施例中，第一夹持部和/或第二夹持部与承载膜接触的部分设有粗糙面，粗糙面包括沿第一方向分布的多个锯齿，第一方向为承载膜的长度方向。
在本公开的一个实施例中，第一夹持结构还包括弧形连接部，弧形连接部设于第一夹持部沿第一方向靠近承载膜中心的一端，弧形连接部向远离压合面的方向弯曲，第一夹持部位于承载膜远离压合面的一侧。
在本公开的一个实施例中，第二夹紧部连接有滑动配合部，滑动配合部与第二夹紧部之间的夹角小于90度。
在本公开的一个实施例中，第一夹紧部沿第一方向位于承载膜外侧的部分设有滑槽，滑动配合部滑动配合于滑槽内。
根据本公开的另一个方面，提供一种贴合方法，采用上面任一项所述的贴合设备进行贴合，该方法包括：
压合机构带动第一待贴合膜材向靠近承载膜的方向运动，使得第一待贴合膜材与位于承载膜上的第二待贴合膜材完全贴合，形成待压合膜组；
夹持治具和压合机构同步向靠近柔性贴合衬垫的方向运动，带动待压合膜组和承载膜向靠近柔性贴合衬垫的方向同步运动，直至压合机构与支撑机构将待压合膜组、承载膜和柔性贴合衬垫完全压合在一起。
在本公开的一个实施例中，该方法还包括：当待压合膜组、承载膜和柔性贴合衬垫完全压合在一起时，将压合机构所施加的贴合压力保持预设时长。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本公开。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本公开的实施例，并与说明书一起用于解释本公开的原理。显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人 员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本公开实施例涉及的贴合设备的立体结构图。
图2为本公开实施例涉及的压合机构的立体结构图。
图3为本公开实施例涉及的压合模具的立体结构图。
图4为本公开实施例涉及的第一待贴合膜材的立体结构图。
图5至图7为本公开实施例涉及的压合机构对第一待贴合膜材的定位过程示意图。
图8为本公开实施例涉及的支撑机构的立体结构图。
图9为本公开实施例涉及的支撑台与挡块组件的连接示意图。
图10为本公开实施例涉及的柔性贴合衬垫的立体结构图。
图11为本公开实施例涉及的承载机构的立体结构图。
图12为本公开实施例涉及的承载机构的局部放大图。
图13为本公开实施例涉及的贴合方法的流程示意图。
图14为本公开实施例涉及的贴合设备的主视图。
图15为本公开实施例涉及的压合机构向下运动时，贴合设备的状态示意图。
图16为本公开实施例涉及的第一待贴合膜材与第二待贴合膜材预贴合时，贴合设备的状态示意图。
图17为本公开实施例涉及的第一待贴合膜材与柔性贴合衬垫的中心接触时，贴合设备的状态示意图。
图18为本公开实施例涉及的第一待贴合膜材与柔性贴合衬垫完全贴合时，贴合设备的状态示意图。
图19为本公开实施例涉及的保压时贴合设备的状态示意图。
图中：1-压合机构，11-压合模具，111-压合面，112-真空吸附孔，12-卡扣，2-支撑机构，21-支撑台，211-凹槽，22-柔性贴合衬垫，221-主体部，2211-支撑面，222-搭接部，23-挡块组件，231-第一挡块，232-第二挡块，233-第三挡块，3-承载机构，31-承载膜，32-夹持单元，321-第一夹持结构，3211-第一夹紧部，3212-弧形连接部，3213-滑槽，322-第二夹持结构，3221-第二夹紧部，3222-滑动配合部，4-第一待贴合膜材， 5-第二待贴合膜材，6-光学胶层。
具体实施方式
现在将参考附图更全面地描述示例实施方式。然而，示例实施方式能够以多种形式实施，且不应被理解为限于在此阐述的实施方式；相反，提供这些实施方式使得本公开将全面和完整，并将示例实施方式的构思全面地传达给本领域的技术人员。图中相同的附图标记表示相同或类似的结构，因而将省略它们的详细描述。此外，附图仅为本公开的示意性图解，并非一定是按比例绘制。
虽然本说明书中使用相对性的用语，例如“上”“下”来描述图标的一个组件对于另一组件的相对关系，但是这些术语用于本说明书中仅出于方便，例如根据附图中所述的示例的方向。能理解的是，如果将图标的装置翻转使其上下颠倒，则所叙述在“上”的组件将会成为在“下”的组件。当某结构在其它结构“上”时，有可能是指某结构一体形成于其它结构上，或指某结构“直接”设置在其它结构上，或指某结构通过另一结构“间接”设置在其它结构上。
用语“一个”、“一”、“该”、“所述”和“至少一个”用以表示存在一个或多个要素/组成部分/等；用语“包括”和“具有”用以表示开放式的包括在内的意思并且是指除了列出的要素/组成部分/等之外还可存在另外的要素/组成部分/等；用语“第一”、“第二”和“第三”等仅作为标记使用，不是对其对象的数量限制。
目前，OLED柔性面板在制备完成后，在其显示屏外侧均需贴设保护盖板，以对OLED柔性面板形成保护。为了实现OLED柔性面板的3D曲面显示，通常将OLED柔性面板的边缘端面设置为弧形面，如此，在显示时，其边缘区域的图像也可以正常显示，因此，保护盖板的边缘端面也通常设置为弧形面，以形成与具有弧形面的柔性面板相匹配的曲面盖板。在本发明中“匹配”的意思是形状大致相同。
目前手机或车载产品成熟应用的，大多将柔性面板贴合于曲面盖板的凹面，设置中间外凸的柔性贴合衬垫，贴合时通过夹持治具把承载膜拉扯成与柔性贴合衬垫相匹配的弧形，然后将柔性贴合衬垫连同柔性面 板向靠近曲面盖板的方向移动，使柔性面板的中间与曲面盖板接触，然后由中间至两端逐渐贴合，将柔性面板与曲面盖板之间的气泡挤出。可以理解的是，该贴合方式需要使用承载膜对柔性面板进行预拉伸，承载膜与柔性面板贴合时，会出现气泡和褶皱等不良的工艺效果。
因此考虑将柔性面板贴合于曲面盖板的凸面，但对于由于曲面盖板的特殊形态，柔性贴合衬垫无法设计成外凸的形态，因此无法通过上述方案对承载膜和柔性面板进行仿形。倘若不对承载膜和柔性面板进行仿形，直接采用中间内凹的衬垫进行贴合，承载膜与柔性贴合衬垫之间存在间隙，柔性面板不能稳定放置在柔性贴合衬垫上，影响了视觉对位，贴合过程中容易造成曲面盖板与柔性面板提前接触，仍然会产生气泡和褶皱等品质风险。
基于此，本公开实施方式提供一种贴合设备。如图1至图8所示，该贴合设备包括压合机构1、支撑机构2和承载机构3，压合机构1包括压合模具11，压合模具11具有向外凸出的压合面111，压合面111用于与待固定的第一待贴合膜材4贴合，压合面111的形状与第一待贴合膜材4的形状相匹配；支撑机构2包括支撑台21和柔性贴合衬垫22，柔性贴合衬垫22位于支撑台21朝向压合机构1的一侧，柔性贴合衬垫22具有支撑面2211，支撑面2211的形状与第一待贴合膜材4的形状相匹配，支撑面2211的曲率大于第一待贴合膜材4的曲率；承载机构3包括承载膜31和夹持治具，承载膜31位于压合面111与支撑面2211之间，承载膜31朝向压合面111的一侧用于贴附第二待贴合膜材5，夹持治具夹持于承载膜31的边缘。
压合机构1带动第一待贴合膜材4向靠近承载膜31的方向运动，带动第一待贴合膜材4与第二待贴合膜材5实现从中间向两端的逐渐接触，最终使得第一待贴合膜材4与位于承载膜31上的第二待贴合膜材5完全贴合，形成待压合膜组。夹持治具和压合机构1同步向靠近柔性贴合衬垫22的方向运动，带动待压合膜组和承载膜31向靠近柔性贴合衬垫22的方向同步运动，因柔性贴合衬垫22的曲率大于第一待贴合膜材4的曲率，因此柔性贴合衬垫22与承载膜31由中间向两端的顺序接触，将承载膜31与柔性贴合衬垫22之间的气泡从两侧挤出。第一待贴合膜材4 与第二待贴合膜材5之间无气泡或褶皱，贴合形成的膜组的品质较为稳定。
下面结合具体的实施方式对该贴合设备进行详细说明。
如图1、图2至图4所示，压合机构1具有第一连接面和压合面111，第一连接面为平面，压合面111与第一连接面相对设置，压合面111为向远离第一连接面的一侧外凸的曲面，压合面111的形状与第一待贴合膜材4的凹面的形状相匹配。压合面111的弧度沿第一方向逐渐变化，当然也可以沿第二方向逐渐变化，第二方向垂直于第一方向，第一方向可以为压合机构1的长度方向，第二方向可以为压合机构1的宽度方向。压合面111的曲率匹配第一待贴合膜材4的曲率设计。
压合机构1还具有第一侧面和第二侧面，第一侧面和第二侧面将第一连接面与压合面111连接在一起，第一连接面的四条边均为直边，压接面相对的两条边为直边，另外相对的两条边为弧形边，两个第一侧面将压接面的两条弧形边与第一连接面的其中两条直边连接在一起，两个第二侧面将压接面的两条直边与第一连接面的另外两条直边连接在一起。
压合面111设有多个真空吸附孔112，通过吸气的方式在真空吸附孔112内形成负压，吸附遮挡真空吸附孔112的第一待贴合膜材4，使得第一待贴合膜材4贴合于压合面111上。多个真空吸附孔112均匀分布于压合面111上，使得第一待贴合膜材4的各部位均受到的吸附力，以更好地保证第一待贴合膜材4与压合面111的贴合效果，防止第一待贴合膜材4脱落。
在本实施例中，多个真空吸附孔112阵列排布于压合面111上，形成真空吸附孔阵列。第一待贴合膜材4通常为刚性膜材，即使不同真空吸附孔112的吸附力有略微差异，第一待贴合膜材4也不会出现褶皱。真空吸附孔阵列的形状匹配第一待贴合膜材4。在本实施例中，第一待贴合膜材4的形状为矩形，因此真空吸附孔阵列为矩形阵列。当待贴合膜材的形状为圆形时，真空吸附孔阵列也可以为圆形阵列，此处不进行具体限定。
压合面111还设有两对卡扣12，每一对卡扣12包括两个卡扣12，两个卡扣12设于真空吸附孔阵列的外围，两个卡扣12分别靠近压合面 111相对的两条直边设置，卡扣12能沿第一待贴合膜材4的弯曲轮廓滑动，改变其在第一方向上的位置。
如图5至图7所示，通过压合面111上的真空吸附孔112吸附第一待贴合膜材4。在真空吸附完成的前提下，驱动卡扣12沿压合面111的弯曲轮廓滑动，使得卡扣12与第一待贴合膜材4的直边抵靠，继续驱动卡扣12滑动，可以推动第一待贴合膜材4沿压合面111滑动。为了保证卡扣12滑动轨迹的可靠性，可以设置与压合面111的弯曲轮廓匹配的滑轨，使卡扣12沿滑轨滑动。还可以将滑轨设置为可伸缩的，在第一待贴合膜材4调整到位后，将滑轨收回，避免对压合机构1的移动形成干扰。
设置驱动机构对卡扣12的位置进行驱动，作为一种可实现方式，驱动机构可以包括压紧气缸和限位块，限位块分别连接卡扣12以及气缸的动作端，通过气缸施力驱动限位块，通过限位块控制卡扣12的位置。当然也可以采用其他驱动机构，例如：齿轮与齿条配合，通过齿轮转动带动齿条平移，由齿条带动卡扣12移动。还可以凸轮连杆机构，凸轮驱动连杆，由连杆带动卡扣12移动。
卡扣12可以包括相互连接的第一卡接部和第二卡接部，第二卡接部与第一卡接部可以一体成型，第二卡接部垂直于第一卡接部。当卡扣12与第一待贴合膜材4抵靠时，第二卡接部与第一待贴合膜材4的直边接触，第二卡接部与第一待贴合膜材4远离压合面111的一面接触。
继续驱动卡扣12沿压合面111的弯曲轮廓滑动时，可以推动第一待贴合膜材4沿压合面111的弯曲轮廓滑动，从而实现对第一待贴合膜材4沿第一方向的固定位置进行调整，保证第一待贴合膜材4曲率的最小的位置与第二待贴合膜材5先接触，规避第一待贴合膜材4与压合机构1的压合面111存在相对角度，导致精度无法补偿的问题。可以理解的是，在对第一待贴合膜材4贴合位置的调整时，在保证其曲率不变的前提下，不会对第一待贴合膜材4产生损伤。
相对而言，第一待贴合膜材4沿第二方向不受曲率的影响，因此无需使用卡扣12对第一待贴合膜材4在第二方向上的位置进行管控，可以通过对第一待贴合膜材4拍照后，对第二待贴合膜材5位置进行适应性调节，使第二待贴合膜材5与第一待贴合膜材4重新趋于对准。当然也 可以设置第三卡接部(图中未示出)，第三卡接部垂直于连接于第一卡接部和第二卡接部上，通过第三卡接部与第一待贴合膜材4的弧形边抵靠，调节第一待贴合膜材4沿第二方向的位置。
如图1、图8至图10所示，支撑机构2包括支撑台21和柔性贴合衬垫22，柔性贴合衬垫22位于支撑台21朝向压合机构1的一侧，柔性贴合衬垫22具有支撑面2211和第二连接面，支撑面2211为向靠近第二连接面的一侧内凹的曲面，支撑面2211的形状与第一待贴合膜材4的凸面形状相匹配。可以理解的是，支撑面2211的弧度变化方向与压合部的弧度匹配。
支撑机构2还具有第三侧面和第四侧面，第三侧面和第四侧面将第二连接面与支撑面2211连接在一起，第三侧面与第一侧面位于同一平面，第四侧面与第二侧面位于同一平面。第二连接面的四条边均为直边，支撑面2211相对的两条边为直边，另外相对的两条边为弧形边，两个第三侧面将支撑面2211的两条弧形边与第二连接面的其中两条直边连接在一起，两个第四侧面将支撑面2211的两条直边与第二连接面的另外两条直边连接在一起。
柔性贴合衬垫22为硅胶材质，具有优良的电绝缘性能，表面电阻为1012Ω·cm，能有效规避对膜组的电性击穿；柔性贴合衬垫22常规条件下的变形可达到40％，压缩变形性能优异，同时不易引发塑性变形，影响贴合品质。
第一待贴合膜材4与第二待贴合膜材5一般通过光学胶层6粘接在一起，第二待贴合膜材膜材5的面积通常大于第一待贴合膜材4面积，光学胶层6的面积通常小于第二待贴合膜材5的面积。柔性贴合衬垫22的尺寸小于第一待贴合膜材4的尺寸，但大于光学胶层6(OCA)的尺寸，这是因为柔性贴合衬垫22的核心目的是挤压第一待贴合膜材4与第二待贴合膜材5之间的光学胶层6，保证光学层与第一待贴合膜材4和第二待贴合膜材5紧密结合在一起。
柔性贴合衬垫22的曲率略小于第一待贴合膜材4的最大曲率，贴合面的曲率与第二待贴合膜材5的曲率的差值小于50-150mm，以保证第一待贴合膜材4的两端与柔性贴合衬垫22的两端可以达到完全贴合，保 证紧密性。
此外，考虑到硅胶材质的静态变形，在柔性贴合衬垫22未安装的状态下，容易发生弹性变形，使得柔性贴合衬垫22的曲率释放变大。因此为规避柔性贴合衬垫22发生塑性变形，导致贴合应力出现偏差，需使用专用移载治具对柔性贴合衬垫22的曲率进行固定。
为了便于对柔性贴合衬垫22进行定位，可以沿第二方向将柔性贴合衬垫22设为中间厚边缘薄的结构。柔性贴合衬垫22包括主体部221和搭接部222，搭接部222设于主体部221的外围，搭接部222的厚度小于主体部221的厚度。贴合设备还包括挡块组件23，挡块组件23与搭接部222配合，由挡块组件23对搭接部222在第一方向、第二方向以及第三方向的位置分别进行限制，从而固定柔性贴合衬垫22在支撑台21上的位置。
挡块组件23包括第一挡块231，第一挡块231与支撑台21固定连接，第一挡块231沿第一方向贴合于搭接部222的外围，第一挡块231沿第一方向的尺寸与柔性贴合衬垫22沿第一方向的尺寸大致相等，且第一挡块231的曲率变化与贴合衬底的曲率变化相同。第一挡块231沿第二方向的尺寸小于等于柔性贴合衬垫22的边缘沿第二方向与支撑台21的边缘之间的距离，第一挡块231沿第三方向的尺寸与柔性贴合衬垫22的搭接部222的厚度相等。
沿第一方向，第一挡块231上设有多个第一安装孔，支撑台21上设有与第一安装孔一一对应的第二安装孔，可以设置紧固件穿过第一安装孔和第二安装孔，将第一挡块231与支撑台21的相对位置固定，保证柔性贴合衬垫22沿第二方向不会出现位置偏移。
挡块组件23还包括第二挡块232，第二挡块232沿第三方向连接于第一挡块231远离支撑台21的一侧，第二挡块232压紧于搭接部222上，第二挡块232在第二方向上与第一挡块231和搭接部222均交叠。通过第二挡块232限制柔性贴合衬垫22沿第三方向上的自由度，保证柔性贴合衬垫22在第三方向的位置不会出现偏移。
第二挡块232上设有第三安装孔，可以将紧固件依次穿过第三安装孔、第二安装孔和第一安装孔，将第二挡块232、第一挡块231及支撑 台21的相对位置固定。可以将第一安装孔设置为沿第二方向延伸的条形孔，通过调节紧固件在第一安装孔内的位置，可以在第二方向自由调节第二挡块232的位置，从而保证柔性贴合衬垫22的紧实度。
需要说明的是，第一挡块231和第二挡块232的总厚度小于主体部221的厚度。在压合机构1与支撑机构2对膜组与柔性贴合衬垫22进行压紧时，不会因为第一挡块231和第二挡块232的总厚度太大，阻挡压合机构1继续向下运动，对压紧过程造成影响。
此外，挡块组件23还可以包括第三挡块233，第三挡块233沿第二方向贴合于搭接部222的外围，可以限制柔性贴合衬垫22在第一方向的自由度。将第三挡块233与支撑台21的相对位置固定，保证柔性贴合衬垫22沿第一方向不会出现位置偏移。
支撑台21与柔性贴合衬垫22的形状相同，支撑台21的曲率可以等于柔性贴合衬垫22的曲率。在承载膜31与柔性贴合衬垫22完全贴合在一起时，膜组中间的压力在0.2Mpa的条件下，四角压力仅0.08Mpa，该状态下膜组的四角几乎未受压，存在虚贴以及大气气泡渗入的问题。若压合机构1继续对膜组加压，则膜组的中间所受到的压力过大，因为第一待贴合膜材4为刚性膜材，可能导致第一待贴合膜材4被压裂，且对膜组的四角所受到的压力没有太大的增益。
为减缓膜组的中间受压过大，且四角受压较小的情况，在支撑台21靠近柔性贴合衬垫22的一面设置凹槽211，柔性贴合衬垫22在支撑台21上的正投影覆盖凹槽211，因此凹槽211的面积小于柔性贴合衬垫22的面积。当凹槽211的深度为2mm，膜组的中间所受到的压力0.18Mpa时，膜组的四角受到的压力达到了0.8Mpa。可以理解的是，膜组与承载膜31贴合结束时，膜组的四角均受到相对较大的压力。
为了进一步提升膜组所受压力的均匀性，还可以调整凹槽211的深度，对膜组的中间和四角所受到的压力进行测量，当膜组的四角受到的压力与膜组的中间受到的压力的比值最大时，凹槽211的深度为最佳值。调整凹槽211深度的具体方式可以是，在凹槽211内贴附胶带，以缩短挖槽深度。
如图1和图11所示，承载机构3包括承载膜31和夹持治具，承载 膜31位于压合机构1的压合面111与支撑机构2的支撑面2211之间，夹持治具夹持于承载膜31的边缘，承载膜31朝向压合面111的一侧用于贴附第二待贴合膜材5，第二待贴合膜材5为柔性膜材，压合机构1带动第一待贴合膜材4向靠近承载膜31的方向运动时，带动第一待贴合膜材4与第二待贴合膜材5实现从中间向两端的逐渐接触。
夹持治具可以包括两个夹持单元32，两个夹持单元32分别用于夹持第二待贴合膜材5沿第一方向相对的两边，夹持单元32可以包括第一夹持结构321和第二夹持结构322，第一夹持结构321包括第一夹紧部3211，第二夹持结构322包括第二夹紧部3221，第一夹紧部3211和第二夹紧部3221平行于承载膜31，承载膜31夹紧于第一夹紧部3211与第二夹紧部3221之间。
如图12所示，为了防止承载膜31与夹持治具之间产生相对松动，可以将第一夹持部与承载膜31接触的部分设为粗糙面，也可以将第二夹持部与承载膜31接触的部分设为粗糙面。为了进一步保证夹持治具的夹持稳定性，还可以将第一夹持部和第二夹持部与承载膜31接触的部分均设为粗糙面。粗糙面可以包括沿第一方向分布的多个锯齿，锯齿可以连续分布，也可以间隔分布，此处不做具体限定。
第一夹持结构321还包括弧形连接部3212，弧形连接部3212设于第一夹持部沿第一方向靠近承载膜31中心的一端，弧形连接部3212向远离压合面111的方向弯曲，可以将第一夹持部设于承载膜31远离压合面111的一侧，第二夹持部设于承载膜31靠近压合面111的一侧。当第一待贴合膜材4与第二待贴合膜材5完全贴合时，承载膜31被拉扯至与弧形连接部3212相同的弧度，此时第二贴合膜材与弧形连接部3212接触，可以缓解其所受到的拉扯应力。
第一夹持结构321还包括滑动配合部3222，滑动配合部3222与第二夹紧部3221连接，可以通过滑动配合部3222与承载膜31沿第一方向的距离，来控制第一夹持部对承载膜31的夹持量，在保证对承载膜31有效夹持的情况下，留出尽可能多的承载区域，以便为第二待贴合膜材5的位置调节留出更大的自由度。
滑动配合部3222与第二夹紧部3221之间的夹角小于90度，仅需配 置一斜向设置的夹紧气缸，夹紧气缸一次施力即可驱动第二夹紧部3221沿第一方向和第三方向同时运动，不仅施力的均匀性较高，且夹持的稳定性较好，可以在一定程度上缩减承载膜31的夹紧时间，总体上提高膜组的贴合效率。需要说明的是，第三方向垂直于第一方向和第二方向，即第三方向为压合机构1的厚度方向。
第一夹紧部沿第一方向位于承载膜外侧的部分设有滑槽3213，滑动配合部3222滑动配合于滑槽3213内。滑槽3213倾斜设置，且倾斜的角度与滑动配合部3222倾斜的角度相同，也就是当夹持治具对承载膜31夹紧时，滑动配合部3222与滑槽3213的两侧壁相互平行。通过设置滑槽3213沿第一方向的尺寸，可以限制滑动配合部3222的移动行程，进而控制第二夹紧部3221对承载膜31的夹紧程度，在实现对承载膜31夹紧的同时，不会对承载膜31造成损伤。
前面提到的膜组可以是大尺寸的车载显示模组。此时，第一待贴合膜材4为曲面盖板，第二待贴合膜材5为柔性面板，柔性面板可以为OLED显示面板。可以理解的是，采用该贴合设备所贴合形成的车载显示模组无气泡或褶皱的干扰，显示品质较好。
下面对上述车载显示模组及其所匹配的贴合设备进行具体说明。
如图1至图12所示，当第一待贴合膜材4为曲面盖板时，第一待贴合膜材4的长度为389mm，第一待贴合膜材4的宽度为219mm，第一待贴合膜材4的厚度为1mm，第一待贴合膜材4的深度为43.5mm，第一待贴合膜材4的曲率在250-750mm之间渐变，第一待贴合膜材4最深处的曲率最小，为250mm；第一待贴合膜材4两端的曲率最大，为750mm。当第二待贴合膜材5为柔性面板时，第二待贴合膜材5的长度为332mm，第二待贴合膜材5的宽度为213mm。光学胶层6设于第一待贴合膜材4与第二待贴合膜材5之间，通过光学胶层6将第一待贴合膜材4与第二待贴合膜材5粘接在一起，光学胶层6的长度为331.6mm，光学胶层6的宽度为210mm。
压合机构1的压合面111的曲率为对应的250～750mm。多个真空吸附孔112在压合面111上排成17×25的矩形阵列，真空吸附通孔的直径可以为0.8-1.2mm。具体地，沿第一方向设置有25个真空吸附孔112， 相邻两个真空吸附孔112之间的间距为8-12mm，沿第二方向置有17个真空吸附孔112，相邻的两个真空吸附孔112之间的间距10-15mm，可以实现整面0.16-0.24Mpa的正常吸附，可以有效规避第一待贴合膜材4脱落。
柔性贴合衬垫22的长度为337mm，柔性贴合衬垫22的宽度为230mm，柔性贴合衬垫22的深度为38.8mm。沿第二方向柔性贴合衬垫22包括主体部221和搭接部222，主体部221与搭接部222沿第一方向的长度均为337mm，主体部221的宽度为317mm，搭接部222的宽度为10mm，主体部221的厚度为8.5mm，搭接部222的厚度为3.5mm。
前面提到，在柔性贴合衬垫22未与支撑台21安装的情况下，柔性贴合衬垫22会发生弹性变形。对应第一待贴合膜材4的最大曲率，柔性贴合衬垫22的最大曲率可以为600～700mm，柔性贴合衬垫22的最大曲率会由600～700mm释放到750～850mm之间，为规避柔性贴合衬垫22发生塑性变形，导致贴合应力出现偏差，需使用为该柔性贴合衬垫22匹配相应的移载治具。
压合机构1的支撑面2211的长度可以设为357mm，压合机构1的支撑面2211的宽度可以设为250mm，支撑面2211上设有2mm的凹槽211，柔性贴合衬垫22在支撑面2211上的正投影覆盖凹槽211。支撑面2211设置柔性贴合衬垫22的部分可以设置挡块组件23，挡块组件23包括第一挡块231、第二挡块232和第三挡块233，第一挡块231沿第一方向设于搭接部222的外侧，第一挡块231远离支撑台21的一侧设置第二挡块232，第二挡块232在第二方向上与第一挡块231和搭接部222均交叠。第三挡块233沿第二方向贴合于搭接部222的外围。
第一挡块231的长度为337mm，第一挡块231的宽度为10mm，第一挡块231的厚度为3.5mm，最大曲率为600～700mm，第一挡块231与柔性贴合衬垫22的搭接部222的厚度相同，第一挡块231的材料为金属材质。第二挡块232的长度为18mm，第二挡块232的宽度为5mm，第二挡块232的厚度为2mm，第二挡块232的材料也为金属材质。可以理解的是，第一挡块231的厚度与第二挡块232的厚度之和为5.5mm，显然小于柔性贴合衬垫22的主体部221的厚度。第三挡块233的长度为 230mm，第三挡块233的宽度可以为10mm，第三挡块233的厚度可以为3.5mm。
本公开实施方式还提供一种贴合方法，该方法采用上面任一项所述的贴合设备进行贴合。如图13所示，该方法可以包括：
步骤S10，压合机构带动第一待贴合膜材向靠近承载膜的方向运动，使得所述第一待贴合膜材与位于所述承载膜上的第二待贴合膜材完全贴合，形成待压合膜组；
步骤S20，夹持治具和压合机构同步向靠近柔性贴合衬垫的方向运动，带动所述待压合膜组和所述承载膜向靠近柔性贴合衬垫的方向同步运动，直至压合机构与支撑机构2将所述待压合膜组、所述承载膜和所述柔性贴合衬垫完全压合在一起。
由于该贴合方法通过本公开实施方式所提供的贴合设备来实现，该贴合方法的有益效果可以参考贴合设备的有益效果，在此不再进行赘述。
在进行贴合动作之间，需要确定第一待贴合膜材、第二待贴合膜材以及柔性贴合衬垫的相对位置。
如图14所示，先将第一待贴合膜材4的凹面贴附于压合机构的压合面上，并通过真空吸附孔抽真空，使得第一待贴合膜材4被吸附于压合面上。观察第一待贴合膜材4的贴合精度，在存在对位偏差时，驱动卡扣12沿压合面的弯曲轮廓滑动，可以推动第一待贴合膜材4沿压合面滑动，调整第一待贴合膜材4与压合面沿第一方向的相对位置，直至第一待贴合膜材4与压合面的曲率完全契合。
对第一待贴合膜材4拍照后，观察第一待贴合膜材4沿第二方向的位置。倘若在第二方向上第二待贴合膜材5与第一待贴合膜材4相对位置存在偏差，对第二待贴合膜材5位置沿第二方向进行适应性调节，使第二待贴合膜材5与第一待贴合膜材4重新趋于对准。
将柔性贴合衬垫22放置于支撑台21上，确保柔性贴合衬垫22在支撑台21上的正投影覆盖凹槽，然后安装第一挡块231、第二挡块232及第三挡块，确保第一挡块231、第二挡块232及第三挡块与柔性贴合衬垫22紧密接触，且第一挡块231、第二挡块232及第三挡块稳定无松动，以保证柔性贴合衬垫22在第一方向、第二方向和第三方向的位置精度。
一般会在压合机构远离支撑机构的一侧设置第一壳体，在支撑机构远离压合机构的一侧设置第二壳体，第二壳体与第一壳体配合形成一密闭的贴合空间。为了减少贴合气泡的产生，对第一待贴合膜材4和第二待贴合膜材5需要在真空环境中进行贴合，因此需要确保贴合空间处于真空状态。
接下来对第一待贴合膜材与第二待贴合膜材进行贴合。
如图15和图16所示，在步骤S10中，第一待贴合膜材中间(曲率最小的部位)与第二待贴合膜材中间先接触，压合机构带动第一待贴合膜材继续向靠近承载膜的方向运动时，带动第一待贴合膜材与第二待贴合膜材实现从中间向两端的逐渐接触。当第一待贴合膜材与第二待贴合膜材完全贴合时，承载膜被拉扯至与弧形连接部相同的弧度，此时第二贴合膜材与第一夹持结构的弧形连接部接触。
如图17和图18所示，在步骤S20中，夹持治具和压合机构同步向靠近柔性贴合衬垫22的方向运动，带动待压合膜组和承载膜31向靠近柔性贴合衬垫22的方向同步运动，因柔性贴合衬垫22的曲率大于第一待贴合膜材4的曲率，因此承载膜31与柔性贴合衬垫22的中间先接触，保证膜组中间区域的应力挤压。夹持治具和压合机构继续运动时，柔性贴合衬垫22与承载膜31由中间向两端的顺序接触，将承载膜31与柔性贴合衬垫22之间的气泡从两侧挤出，直至将待压合膜组、承载膜31和柔性贴合衬垫22完全压合在一起。
如图19所示，该方法还可以包括步骤S30，当所述待压合膜组、所述承载膜和所述柔性贴合衬垫完全压合在一起时，将所述压合机构所施加的贴合压力保持预设时长。
保压预设时长，可以进一步保证第一待贴合膜材4与第二待贴合膜材5的贴附效果。在本实施例中，预设时长通常可以设为5s。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本公开的其它实施方案。本申请旨在涵盖本公开的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本公开的真正范围和精神由所附的权 利要求指出。

Claims (20)

  1. 一种贴合设备，其中，包括：
    压合机构，包括压合模具，所述压合模具具有向外凸出的压合面，所述压合面用于与待固定的第一待贴合膜材贴合，所述压合面的形状与所述第一待贴合膜材的形状相匹配；
    支撑机构，包括支撑台和柔性贴合衬垫，所述柔性贴合衬垫位于所述支撑台朝向所述压合机构的一侧，所述柔性贴合衬垫具有支撑面，所述支撑面的形状与所述第一待贴合膜材的形状相匹配，所述支撑面的曲率大于所述第一待贴合膜材的曲率；
    承载机构包括承载膜和夹持治具，承载膜位于所述压合面与所述支撑面之间，所述承载膜朝向所述压合面的一侧用于贴附第二待贴合膜材，夹持治具夹持于所述承载膜的边缘。
  2. 根据权利要求1所述的贴合设备，其中，所述压合面设有多个真空吸附孔，多个所述真空吸附孔均匀地排布于所述压合面上。
  3. 根据权利要求2所述的贴合设备，其中，所述压合面设有至少一对卡扣，所述一对卡扣包括两个卡扣，两个所述卡扣设于所述多个真空吸附孔的外围，且分别靠近所述压合面相对的两条直边设置，所述卡扣能沿所述压合面的弯曲轮廓滑动。
  4. 根据权利要求1所述的贴合设备，其中，所述柔性贴合衬垫包括主体部和搭接部，所述搭接部设于所述主体部的外围，所述搭接部的厚度小于所述主体部的厚度，所述贴合设备还包括挡块组件，所述挡块组件与所述搭接部配合，以固定所述柔性贴合衬垫的位置。
  5. 根据权利要求4所述的贴合设备，其中，所述挡块组件包括第一挡块，所述第一挡块与所述支撑台固定连接，所述第一挡块沿第一方向贴合于所述搭接部的外围，所述第一挡块与所述柔性贴合衬垫的弯曲弧度相同。
  6. 根据权利要求5所述的贴合设备，其中，所述挡块组件还包括第二挡块，所述第二挡块沿第三方向连接于所述第一挡块远离所述支撑台的一侧，所述第二挡块压紧于所述搭接部上，所述第三方向为所述承载膜的厚度方向。
  7. 根据权利要求6所述的贴合设备，其中，所述第一挡块的长度等于所述柔性贴合衬垫沿所述第一方向的尺寸，所述第二挡块的数量为多个，多个所述第二挡块沿所述第一方向均匀设置。
  8. 根据权利要求6所述的贴合设备，其中，所述第二挡块上设有第三安装孔，设置紧固件穿过所述第三安装孔，将所述第二挡块与所述第一挡块的相对位置固定，所述第三安装孔为沿第二方向延伸的条形孔，所述第二方向垂直于所述第一方向和所述第三方向。
  9. 根据权利要求6所述的贴合设备，其中，所述第一挡块和所述第二挡块的总厚度小于所述主体部的厚度。
  10. 根据权利要求8所述的贴合设备，其中，所述挡块组件还包括第三挡块，所述第三挡块沿所述第二方向贴合于所述搭接部的外围。
  11. 根据权利要求1所述的贴合设备，其中，所述支撑台靠近柔性贴合衬垫的一面设有凹槽，所述柔性贴合衬垫在所述支撑台上的正投影覆盖所述凹槽。
  12. 根据权利要求1所述的贴合设备，其中，所述贴合面的曲率与所述第二待贴合膜材的曲率的差值小于50-150mm。
  13. 根据权利要求1所述的贴合设备，其中，所述夹持治具包括两个夹持单元，两个所述夹持单元分别用于夹持所述第二待贴合膜材沿所述第一方向相对的两边。
  14. 根据权利要求1所述的贴合设备，其中，所述夹持单元包括第一夹持结构和第二夹持结构，所述第一夹持结构包括第一夹紧部，所述第二夹持结构包括第二夹紧部，所述第一夹紧部和所述第二夹紧部平行于所述承载膜，所述承载膜夹紧于所述第一夹紧部与所述第二夹紧部之间。
  15. 根据权利要求14所述的贴合设备，其中，所述第一夹持部和/或所述第二夹持部与所述承载膜接触的部分设有粗糙面，所述粗糙面包括沿第一方向分布的多个锯齿，所述第一方向为所述承载膜的长度方向。
  16. 根据权利要求14所述的贴合设备，其中，所述第一夹持结构还包括弧形连接部，所述弧形连接部设于所述第一夹持部沿第一方向靠近所述承载膜中心的一端，所述弧形连接部向远离所述压合面的方向弯曲， 所述第一夹持部位于所述承载膜远离所述压合面的一侧。
  17. 根据权利要求15所述的贴合设备，其中，所述第二夹紧部连接有滑动配合部，所述滑动配合部与第二夹紧部之间的夹角小于90度。
  18. 根据权利要求17所述的贴合设备，其中，所述第一夹紧部沿所述第一方向位于所述承载膜外侧的部分设有滑槽，所述滑动配合部滑动配合于所述滑槽内。
  19. 一种贴合方法，其中，采用权利要求1所述的贴合设备进行贴合，所述方法包括：
    压合机构带动第一待贴合膜材向靠近承载膜的方向运动，使得所述第一待贴合膜材与位于所述承载膜上的第二待贴合膜材完全贴合，形成待压合膜组；
    夹持治具和压合机构同步向靠近柔性贴合衬垫的方向运动，带动所述待压合膜组和所述承载膜向靠近柔性贴合衬垫的方向同步运动，直至压合机构与支撑机构将所述待压合膜组、所述承载膜和所述柔性贴合衬垫完全压合在一起。
  20. 根据权利要求19所述的贴合方法，其中，所述方法还包括：
    当所述待压合膜组、所述承载膜和所述柔性贴合衬垫完全压合在一起时，将所述压合机构所施加的贴合压力保持预设时长。
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JP2005035130A (ja) * 2003-07-18 2005-02-10 Three M Innovative Properties Co 装飾フィルムの貼り付け方法
US20110146893A1 (en) * 2006-06-13 2011-06-23 Essilor International (Compagnie Generale D'optique) Method of Bonding a Film to a Curved Substrate
CN114454489A (zh) * 2022-02-10 2022-05-10 京东方科技集团股份有限公司 一种贴合设备
CN114801150A (zh) * 2022-05-13 2022-07-29 业泓科技(成都)有限公司 立体贴合成型装置及方法
CN217553401U (zh) * 2022-03-29 2022-10-11 芜湖长信科技股份有限公司 一种车载曲面屏玻璃贴合装置

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JP2005035130A (ja) * 2003-07-18 2005-02-10 Three M Innovative Properties Co 装飾フィルムの貼り付け方法
US20110146893A1 (en) * 2006-06-13 2011-06-23 Essilor International (Compagnie Generale D'optique) Method of Bonding a Film to a Curved Substrate
CN114454489A (zh) * 2022-02-10 2022-05-10 京东方科技集团股份有限公司 一种贴合设备
CN217553401U (zh) * 2022-03-29 2022-10-11 芜湖长信科技股份有限公司 一种车载曲面屏玻璃贴合装置
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