A flexible OLED screen OCA bonding device

Abstract

The present invention discloses a flexible OLED screen OCA bonding device, including a bonding longitudinal module, a bonding transverse module, a bonding lifting motor, a bonding lifting slide and a bonding head, wherein the above-mentioned bonding longitudinal module is arranged across the transmission line body of the bonding machine and the upper part of the OCA film tearing mechanism; the above-mentioned bonding transverse module is connected to the output end of the bonding longitudinal module; the above-mentioned bonding lifting motor is connected to the output end of the bonding transverse module, and the output end is arranged downward; the above-mentioned bonding lifting slide is connected to the output end of the bonding lifting motor through a screw rod; the above-mentioned bonding head is connected to the bonding lifting slide and moves with the bonding lifting slide; the bonding head includes a rotation correction component, a bonding plate, a pressure plate component, a pressure roller component and an air pressure component. The present invention adopts a single-sided movable rotating structure to realize edge bonding, and has bonding, rolling and air pressure coordinated actions in sequence, which greatly improves the bonding stability and bonding thickness uniformity.

Description

Technical Field

[0001] The present invention relates to the field of automated manufacturing, and in particular to an OCA laminating device for a flexible OLED screen. Background Art

[0002] Flat panel display devices are human-computer interaction carriers that realize text and image display. They are mainly composed of display modules, backlight modules and touch modules. The display module is composed of display panels, polarizers, driver chips (ICs), circuit boards (PCBs and FPCs) and other components. The production of flat panel display devices is divided into front-end arrays, box-making processes and back-end module assembly processes. The front-end process is used to produce display panels, and the back-end process is used to assemble display panels, polarizers, backlight modules, touch modules and other components into flat panel display devices. The front-end process production equipment is currently mainly provided by Japanese, Korean and American companies, and it is basically impossible to produce it domestically; in the back-end process production equipment, a few domestic companies have achieved breakthroughs and are gradually replacing imported equipment. The display panel is the main component to realize the display function. In order to assemble it into a display device, polarizers need to be attached to both sides of the panel (LCD panels need to attach a polarizer on the upper and lower sides, and OLED panels need to attach a polarizer on the top) to achieve directional propagation of light.

[0003] In order to ensure the stability of the polarizer and OLED panel, the bonding process requires that transparent OCA glue be attached to the OLED panel first, and the OCA glue can achieve the adhesion function; therefore, it is necessary to design an automatic bonding device for attaching OCA to OLED. Since the accuracy, thickness uniformity and bonding stability of OCA bonding directly affect the subsequent polarizer bonding process, a new bonding device needs to be independently developed for OCA bonding. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a flexible OLED screen OCA bonding device which adopts a single-sided movable rotating structure to achieve edge bonding, and has bonding, rolling and air pressure working in sequence to greatly improve the bonding stability and bonding thickness uniformity.

[0005] The technical solution adopted by the present invention is as follows: a flexible OLED screen OCA bonding device, including a bonding longitudinal module, a bonding transverse module, a bonding lifting motor, a bonding lifting slide and a bonding head, wherein the above-mentioned bonding longitudinal module is arranged across the transmission line body of the bonding machine and the OCA film tearing mechanism; the above-mentioned bonding transverse module is connected to the output end of the bonding longitudinal module; the above-mentioned bonding lifting motor is connected to the output end of the bonding transverse module, and the output end is arranged downward; the above-mentioned bonding lifting slide is connected to the output end of the bonding lifting motor through a screw rod; the above-mentioned bonding head is connected to the bonding lifting slide and moves with the bonding lifting slide; the bonding head includes a rotation correction component, a bonding plate, a pressure plate component, a pressure roller component and an air pressure component, wherein the above-mentioned rotation correction component is connected to the lower part of the bonding lifting slide, and the output end is arranged downward, The plate is connected to the output end of the rotating correction component, and the position is adjusted by the rotating correction component. The bottom of the bonding plate absorbs the OCA to be bonded through the vacuum suction hole; one side of the bonding plate is rotatably connected to the rotating correction component; the above-mentioned pressure plate component is arranged on the other side of the bonding plate, the upper part of the pressure plate component is connected to the rotating correction component, and the lower part is connected to the bonding plate, and drives the other side of the bonding plate to rotate downward, so that when bonding, one side of the OCA is first bonded to the flexible OLED, and the bonding is completed by continuous rotation; the above-mentioned pressure roller component is connected to the outer side of the pressure plate component, the output end of the pressure roller component is arranged downward, and it rolls downward onto the bonded OCA; the above-mentioned air pressure component is arranged on the outer side of the pressure roller component, and the output end is arranged downward. After the pressure roller component rolls the bonded OCA, the air pressure component is close to the OCA and presses the OCA through downward air pressure.

[0006] Preferably, the pressure plate component includes a pressure plate cylinder, a pressure plate slide, a pressure plate wheel, a pressure support and a tension spring, wherein the pressure plate cylinder is connected to one side of the rotation correction component, and the output end is arranged downward; the pressure plate slide is connected to the output end of the pressure plate cylinder, and the bottom of the pressure plate slide is rotatably connected to the pressure plate wheel.

[0007] Preferably, the pressure support is vertically arranged on the upper part of the other side of the bonding plate, and a horizontal pressure platform is provided on the upper part of the pressure support. The pressure plate cylinder drives the pressure plate wheel to press down on the pressure support, so that the pressure support presses down the other side of the bonding plate, so that the bonding plate rotates around one side, and the OCA on the other side of the bonding plate contacts the flexible OLED first.

[0008] Preferably, the tension spring is vertically connected to the laminating plate and the rotation correction component, and in a natural state, the tension spring pulls the other side of the laminating plate upwards.

[0009] Preferably, the rotation correction component is a rotation correction motor, the output end of the rotation correction motor is connected to the bonding base, and the rotation correction motor drives the bonding base to rotate; a rotating seat is provided at the lower part of one side of the bonding base; one side of the above-mentioned bonding plate is rotatably connected to the rotating seat through a rotating shaft.

[0010] Preferably, the pressure roller component includes a pressure roller cylinder, a pressure roller slide and a lower pressure roller, wherein the pressure roller cylinder is vertically connected to the outer wall of the pressure support and the output end is arranged downward; the pressure roller slide is slidably connected to the side wall of the pressure support along the vertical direction and is connected to the output end of the pressure roller cylinder.

[0011] Preferably, the lower pressure roller is rotatably connected to the lower end of the pressure roller slide and extends downward to the outer side of the other side of the bonding plate; the pressure roller cylinder drives the lower pressure roller to slide down along the arc-shaped transition surface opened on the outer side wall of the other side of the bonding plate so as to roll the OCA part after bonding.

[0012] Preferably, the pneumatic component includes a pneumatic cylinder, a pneumatic slide and a pneumatic seat, wherein the pneumatic cylinder is connected to the side wall of the pressure roller slide and the output end is arranged downward; the pneumatic slide can be slidably connected to the pressure roller slide and is connected to the output end of the pneumatic cylinder.

[0013] Preferably, the air pressure seat is connected to the pressure roller slide and extends downward to the outside of the lower pressure roller. An air hole is provided at the bottom of the air pressure seat. The air pressure cylinder drives the air pressure seat close to the OCA after rolling and continuously acts on the OCA through air pressure to maintain pressure.

[0014] The beneficial effects of the present invention are:

[0015] In view of the defects and shortcomings of the prior art, the present invention independently develops and designs a flexible OLED screen OCA bonding device which adopts a single-sided movable rotating structure to achieve edge bonding, and has bonding, rolling and air pressure working in sequence to greatly improve the bonding stability and bonding thickness uniformity.

[0016] After the bonding plate of the present invention takes out the OCA sheet from the mobile platform by vacuum negative pressure, the angle of the OCA sheet is corrected and aligned by a rotating correction component; the bonding plate of the present invention adopts a rotatable structure design, one side of the bonding plate is rotatably connected to a rotating seat arranged at the lower part of the bonding base by a rotating shaft, and the other side of the bonding plate is connected to the bonding base by a tension spring. In a natural state, the tension of the tension spring pulls the bonding plate upward. In order to ensure the bonding stability of the OCA and the uniformity of the thickness of the OCA glue, the present invention is designed with a pressure plate component, a pressure roller component and an air pressure component on the other movable side of the bonding plate, wherein the pressure plate component includes two parts arranged upper and lower, the upper part is connected to the rotation correction component, the upper pressure plate cylinder drives the pressure plate slide to drive the pressure plate wheel rotatably connected to its lower part to move downward, and the lower pressure support is connected to the bonding plate. After the pressure support receives the pressure of the pressure plate wheel, it drives the bonding plate to overcome the pulling force of the tension spring and rotates downward, so that one side of the OCA at the bottom of the bonding plate contacts the OLED panel first, and as the bonding head descends as a whole, the OCA is gradually pressed down from one side and bonded to the OLED panel until the overall bonding of the OCA is completed; this edge contact bonding method can effectively reduce bonding bubbles and improve bonding stability. At the same time, the pressure roller component of the present invention is connected to the side wall of the pressure plate slide of the pressure plate component, and the pressure roller cylinder of the pressure roller component drives the pressure roller slide to drive the lower pressure roller rotatably connected to its bottom to gradually press along the arc transition surface opened on the outer wall on the other side of the bonding plate to the OCA part bonded to the OLED panel, and as the bonding plate continuously bonds the OCA, the lower pressure roller cooperates to roll the bonded OCA to ensure the uniformity of the thickness of the OCA after bonding. In addition, the present invention also provides a pneumatic component on the outside of the pressure roller component. The pneumatic cylinder and the pneumatic slide of the pneumatic component are connected to the pressure roller slide, and the cylinder drives the pneumatic slide to rise and fall independently, so that the pneumatic seat arranged at the bottom of the pneumatic slide approaches the OCA from the outside of the lower pressure roller. The OCA after being pressed by the lower pressure roller is continuously pressed by the high-pressure gas discharged from the bottom of the pneumatic seat, which prevents the OCA from rebounding upward due to its own tension after being pressed by the lower pressure roller, thereby realizing the pressure maintaining function, further ensuring the bonding stability and the uniformity of the OCA bonding thickness, and effectively improving the bonding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is one of the three-dimensional structural schematic diagrams of the present invention.

[0018] Figure 2 for Figure 1 Schematic diagram of the initial amplification structure.

[0019] Figure 3 This is the second schematic diagram of the three-dimensional structure of the present invention.

[0020] Figure 4 This is the third schematic diagram of the three-dimensional structure of the present invention. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with the accompanying drawings:

[0022] like Figures 1 to 4 As shown, the technical solution adopted by the present invention is as follows: a flexible OLED screen OCA bonding device, including a bonding longitudinal module 81, a bonding transverse module 82, a bonding lifting motor 83, a bonding lifting slide 84 and a bonding head, wherein the above-mentioned bonding longitudinal module 81 is arranged across the transmission line body of the bonding machine and the OCA film tearing mechanism; the above-mentioned bonding transverse module 82 is connected to the output end of the bonding longitudinal module 81; the above-mentioned bonding lifting motor 83 is connected to the output end of the bonding transverse module 82, and the output end is arranged downward; the above-mentioned bonding lifting slide 84 is connected to the output end of the bonding lifting motor 83 through a screw rod; the above-mentioned bonding head is connected to the bonding lifting slide 84 and moves with the bonding lifting slide 84; the bonding head includes a rotation correction component, a bonding plate 85, a pressure plate component, a pressure roller component and an air pressure component, wherein the above-mentioned rotation correction component is connected to the lower part of the bonding lifting slide 84, and The output end is set downward, and the bonding plate 85 is connected to the output end of the rotating correction component. After the rotating correction component adjusts the position, the bottom of the bonding plate 85 absorbs the OCA to be bonded through the vacuum suction hole; one side of the bonding plate 85 is rotatably connected to the rotating correction component; the above-mentioned pressure plate component is set on the other side of the bonding plate 85, the upper part of the pressure plate component is connected to the rotating correction component, and the lower part is connected to the bonding plate 85, and drives the other side of the bonding plate 85 to rotate downward, so that when bonding, one side of the OCA is first bonded to the flexible OLED, and the bonding is completed by continuous rotation; the above-mentioned pressure roller component is connected to the outer side of the pressure plate component, the output end of the pressure roller component is set downward, and it rolls downward onto the bonded OCA; the above-mentioned air pressure component is set on the outer side of the pressure roller component, and the output end is set downward. After the pressure roller component rolls the bonded OCA, the air pressure component is close to the OCA and presses the OCA through downward air pressure.

[0023] The pressure plate component includes a pressure plate cylinder 86, a pressure plate slide 87, a pressure plate wheel 88, a pressure support 89 and a tension spring 819, wherein the pressure plate cylinder 86 is connected to one side of the rotation correction component, and the output end is set downward; the pressure plate slide 87 is connected to the output end of the pressure plate cylinder 86, and the bottom of the pressure plate slide 87 is rotatably connected to the pressure plate wheel 88.

[0024] The pressure support 89 is vertically arranged on the upper part of the other side of the bonding plate 85. A horizontal pressure platform is provided on the upper part of the pressure support 89. The pressure plate cylinder 86 drives the pressure plate wheel 88 to press down on the pressure support 89, so that the pressure support 89 presses down on the other side of the bonding plate 85, so that the bonding plate 85 rotates around one side, and the OCA on the other side of the bonding plate 85 contacts the flexible OLED first.

[0025] The tension spring 819 is vertically connected to the laminating plate 85 and the rotation correction component. In a natural state, the tension spring 819 pulls the other side of the laminating plate 85 upward.

[0026] The rotation correction component is a rotation correction motor 816, the output end of the rotation correction motor 816 is connected to the bonding base 817, and the rotation correction motor 816 drives the bonding base 817 to rotate; a rotating base 818 is provided at the lower part of one side of the bonding base 817; one side of the above-mentioned bonding plate 85 is rotatably connected to the rotating base 818 through a rotating shaft.

[0027] The pressure roller component includes a pressure roller cylinder 810, a pressure roller slide 811 and a lower pressure roller 812, wherein the pressure roller cylinder 810 is vertically connected to the outer wall of the pressure support 89, and the output end is set downward; the pressure roller slide 811 is slidably connected to the side wall of the pressure support 89 along the vertical direction, and is connected to the output end of the pressure roller cylinder 810.

[0028] The lower pressure roller 812 is rotatably connected to the lower end of the pressure roller slide 811 and extends downward to the outer side of the other side of the bonding plate 85; the pressure roller cylinder 810 drives the lower pressure roller 812 to slide down along the arc-shaped transition surface opened on the outer side wall of the other side of the bonding plate 85 so as to roll the OCA part after bonding.

[0029] The pneumatic component includes a pneumatic cylinder 813, a pneumatic slide 814 and a pneumatic seat 815, wherein the pneumatic cylinder 813 is connected to the side wall of the pressure roller slide 811, and the output end is set downward; the pneumatic slide 814 is slidably connected to the pressure roller slide 811, and is connected to the output end of the pneumatic cylinder 813.

[0030] The pneumatic seat 815 is connected to the pressure roller slide 811 and extends downward to the outside of the lower pressure roller 812. An air hole is provided at the bottom of the pneumatic seat 815. The pneumatic cylinder 813 drives the pneumatic seat 815 to approach the OCA after rolling and continuously acts on the OCA through air pressure to maintain pressure.

[0031] Furthermore, the present invention designs a flexible OLED screen OCA bonding device that uses a single-sided movable rotating structure to achieve edge bonding, and has bonding, rolling and air pressure that work together in sequence, greatly improving bonding stability and bonding thickness uniformity. After the bonding plate of the present invention removes the OCA sheet from the mobile platform through vacuum negative pressure, the angle of the OCA sheet is corrected and aligned using a rotating correction component; the bonding plate of the present invention adopts a rotatable structure design, one side of the bonding plate is rotatably connected to the rotating seat provided at the lower part of the bonding base through a rotating shaft, and the other side of the bonding plate is connected to the bonding base through a tension spring, and the tension of the tension spring in the natural state pulls the bonding plate upward. In order to ensure the bonding stability of the OCA and the uniformity of the thickness of the OCA glue, the present invention is designed with a pressure plate component, a pressure roller component and an air pressure component on the other movable side of the bonding plate, wherein the pressure plate component includes two parts arranged upper and lower, the upper part is connected to the rotation correction component, the upper pressure plate cylinder drives the pressure plate slide to drive the pressure plate wheel rotatably connected to its lower part to move downward, and the lower pressure support is connected to the bonding plate. After the pressure support receives the pressure of the pressure plate wheel, it drives the bonding plate to overcome the pulling force of the tension spring and rotates downward, so that one side of the OCA at the bottom of the bonding plate contacts the OLED panel first, and as the bonding head descends as a whole, the OCA is gradually pressed down from one side and bonded to the OLED panel until the overall bonding of the OCA is completed; this edge contact bonding method can effectively reduce bonding bubbles and improve bonding stability. At the same time, the pressure roller component of the present invention is connected to the side wall of the pressure plate slide of the pressure plate component, and the pressure roller cylinder of the pressure roller component drives the pressure roller slide to drive the lower pressure roller rotatably connected to its bottom to gradually press along the arc transition surface opened on the outer wall on the other side of the bonding plate to the OCA part bonded to the OLED panel, and as the bonding plate continuously bonds the OCA, the lower pressure roller cooperates to roll the bonded OCA to ensure the uniformity of the thickness of the OCA after bonding. In addition, the present invention also provides a pneumatic component on the outside of the pressure roller component. The pneumatic cylinder and the pneumatic slide of the pneumatic component are connected to the pressure roller slide, and the cylinder drives the pneumatic slide to rise and fall independently, so that the pneumatic seat arranged at the bottom of the pneumatic slide approaches the OCA from the outside of the lower pressure roller. The OCA after being pressed by the lower pressure roller is continuously pressed by the high-pressure gas discharged from the bottom of the pneumatic seat, which prevents the OCA from rebounding upward due to its own tension after being pressed by the lower pressure roller, thereby realizing the pressure maintaining function, further ensuring the bonding stability and the uniformity of the OCA bonding thickness, and effectively improving the bonding quality.

[0032] The embodiments of the present invention are only to introduce its specific implementation methods and are not intended to limit its protection scope. The technicians in this industry can make some modifications inspired by this embodiment, so any equivalent changes or modifications made according to the scope of the patent of the present invention are within the scope of the patent claims of the present invention.

Claims

1. A flexible OLED screen OCA bonding device, characterized by: The laminating machine comprises a longitudinal laminating module (81), a transverse laminating module (82), a laminating lifting motor (83), a laminating lifting slide (84) and a laminating head, wherein the longitudinal laminating module (81) is arranged across the transmission line of the laminating machine and the OCA film tearing mechanism; the transverse laminating module (82) is connected to the output end of the longitudinal laminating module (81); the laminating lifting motor (83) is connected to the output end of the transverse laminating module (82), and the output end is arranged downward; the laminating lifting slide (84) is connected to the output end of the laminating lifting motor (83) through a screw rod; the laminating head is connected to the laminating lifting slide (84) and moves with the laminating lifting slide (84); the laminating head comprises a rotation correction component, a laminating plate (85), a pressure plate component, a pressure roller component and an air pressure component, wherein the rotation correction component is connected to the lower part of the laminating lifting slide (84), and the output end is arranged downward, The laminating plate (85) is connected to the output end of the rotating correction component, and the position is adjusted by the rotating correction component, and the bottom of the laminating plate (85) absorbs the OCA to be laminated through the vacuum suction hole; one side of the laminating plate (85) is rotatably connected to the rotating correction component; the above-mentioned pressing plate component is arranged on the other side of the laminating plate (85), the upper part of the pressing plate component is connected to the rotating correction component, and the lower part is connected to the laminating plate (85), and drives the other side of the laminating plate (85) to rotate downward, so that when laminating, one side of the OCA is first laminated to the flexible OLED, and the laminating is completed by continuous rotation; the above-mentioned pressing roller component is connected to the outer side of the pressing plate component, the output end of the pressing roller component is arranged downward, and it rolls downward onto the laminated OCA; the above-mentioned air pressure component is arranged on the outer side of the pressing roller component, and the output end is arranged downward. After the pressing roller component rolls the laminated OCA, the air pressure component is close to the OCA and presses the OCA through downward air pressure.

2. The OCA bonding device for a flexible OLED screen according to claim 1, characterized in that: The pressure plate component includes a pressure plate cylinder (86), a pressure plate slide (87), a pressure plate wheel (88), a pressure support (89) and a tension spring (819), wherein the pressure plate cylinder (86) is connected to one side of the rotation correction component, and the output end is arranged downward; the pressure plate slide (87) is connected to the output end of the pressure plate cylinder (86), and the bottom of the pressure plate slide (87) is rotatably connected to the pressure plate wheel (88).

3. The OCA bonding device for a flexible OLED screen according to claim 2, characterized in that: The pressure support (89) is vertically arranged on the upper part of the other side of the bonding plate (85), and a horizontal pressure platform is arranged on the upper part of the pressure support (89). The pressure plate cylinder (86) drives the pressure plate wheel (88) to press down on the pressure support (89), so that the pressure support (89) presses down on the other side of the bonding plate (85), so that the bonding plate (85) rotates around one side, and the OCA on the other side of the bonding plate (85) first contacts the flexible OLED.

4. The OCA bonding device for a flexible OLED screen according to claim 3, characterized in that: The tension spring (819) is vertically connected to the laminating plate (85) and the rotation correction component. In a natural state, the tension spring (819) pulls the other side of the laminating plate (85) upward.

5. The OCA bonding device for a flexible OLED screen according to claim 4, characterized in that: The rotation correction component is a rotation correction motor (816), the output end of the rotation correction motor (816) is connected to a bonding base (817), and the rotation correction motor (816) drives the bonding base (817) to rotate; a rotating base (818) is provided at the lower part of one side of the bonding base (817); one side of the bonding plate (85) is rotatably connected to the rotating base (818) via a rotating shaft.

6. The OCA bonding device for a flexible OLED screen according to claim 5, characterized in that: The pressure roller component includes a pressure roller cylinder (810), a pressure roller slide (811) and a lower pressure roller (812), wherein the pressure roller cylinder (810) is vertically connected to the outer wall of the pressure support (89), and the output end is arranged downward; the pressure roller slide (811) is slidably connected to the side wall of the pressure support (89) in the vertical direction, and is connected to the output end of the pressure roller cylinder (810).

7. The OCA bonding device for a flexible OLED screen according to claim 6, characterized in that: The lower pressing roller (812) is rotatably connected to the lower end of the pressing roller slide (811) and extends downward to the outer side of the other side of the bonding plate (85); the pressing roller cylinder (810) drives the lower pressing roller (812) to slide down along the arc-shaped transition surface opened on the outer side wall of the other side of the bonding plate (85) so as to roll the OCA part after bonding.

8. The OCA bonding device for a flexible OLED screen according to claim 7, characterized in that: The pneumatic component comprises a pneumatic cylinder (813), a pneumatic slide seat (814) and a pneumatic seat (815), wherein the pneumatic cylinder (813) is connected to the side wall of the pressure roller slide seat (811) and the output end is arranged downward; the pneumatic slide seat (814) is slidably connected to the pressure roller slide seat (811) and is connected to the output end of the pneumatic cylinder (813).

9. The OCA bonding device for a flexible OLED screen according to claim 8, characterized in that: The air pressure seat (815) is connected to the pressure roller slide (811) and extends downward to the outside of the lower pressure roller (812). An air hole is provided at the bottom of the air pressure seat (815). The air pressure cylinder (813) drives the air pressure seat (815) close to the OCA after rolling and continuously acts on the OCA through air pressure to maintain pressure.

Images