Display panel encapsulation device, display panel encapsulation method and display panel

Abstract

The application discloses a display panel sealing device, a display panel sealing method and a display panel. The display panel sealing device comprises a carrier table, a vacuum adsorption hole is arranged on the first surface of the adsorption area, a glue containing groove is arranged on the first surface of the containing area, and the glue containing groove is arranged around the adsorption area. A sealing glue assembly is arranged opposite to the first surface of the carrier table, the sealing glue assembly comprises a supporting rod, a glue dropping part movably connected with the supporting rod, and a scraper part movably connected with the supporting rod. The glue dropping part and the scraper part are arranged at intervals along the extension direction of the supporting rod. The glue dropping part can move relative to the supporting rod along the extension direction of the supporting rod. The scraper part can move relative to the supporting rod along the extension direction of the supporting rod. The width of the scraper part is greater than the width of the display panel along the direction perpendicular to the extension direction of the supporting rod. The sealing of the backlight surface and the periphery of the display panel is realized, and the structural strength and reliability of the display panel are improved.

Description

Technical Field

[0001] This application belongs to the field of display technology, and in particular relates to a display panel sealing device, a display panel sealing method, and a display panel. Background Technology

[0002] Organic light-emitting diodes (OLEDs) and flat panel displays based on light-emitting diodes (LEDs) are widely used in various consumer electronics products such as mobile phones, televisions, laptops, and desktop computers due to their advantages such as high image quality, energy saving, thin body, and wide range of applications, becoming the mainstream of display panels.

[0003] In existing technologies, the sealing process and sealing equipment have limited effectiveness in preventing moisture or corrosive liquids from entering the display panel by sealing around its perimeter. Summary of the Invention

[0004] This application provides a display panel sealing device, a display panel sealing method, and a display panel. The dispensing part of the sealing component can dispense liquid adhesive onto the backlight surface of the display panel to be sealed. The scraper part moves along the support rod to apply the adhesive, so that the adhesive can cover the backlight surface of the display panel and overflow to the sides of the display panel, thereby sealing the backlight surface and the surrounding area of ​​the display panel. This improves the structural strength and reliability of the display panel and avoids light leakage problems around the edges caused by the adhesion tolerance of films such as polarizers or optical adhesives.

[0005] One embodiment of this application provides a display panel sealing device, comprising: a stage, the stage including a first surface for placing a display panel, the first surface including an adsorption area and a receiving area surrounding the adsorption area, the first surface of the adsorption area having vacuum adsorption holes, the first surface of the receiving area having an adhesive receiving groove, the adhesive receiving groove surrounding the adsorption area; and a sealing assembly disposed opposite to the first surface of the stage, the sealing assembly including a support rod, a dispensing part movably connected to the support rod, and a scraper part movably connected to the support rod, the dispensing part and the scraper part being spaced apart along the extension direction of the support rod, the dispensing part being movable relative to the support rod along the extension direction of the support rod, the scraper part being movable relative to the support rod along the extension direction of the support rod, and the width of the scraper part being greater than the width of the display panel in a direction perpendicular to the extension direction of the support rod.

[0006] According to one aspect of this application, the sealing assembly includes a first support rod and a second support rod, the first support rod and the second support rod extending in the same direction, and the first support rod and the second support rod are spaced apart along a direction perpendicular to the extending direction of the first support rod; the dispensing part is connected to both the first support rod and the second support rod, and the scraper part is connected to both the first support rod and the second support rod.

[0007] According to one aspect of this application, the sealing assembly further includes a first connector and a second connector, both extending in a direction perpendicular to the extension direction of the first support rod. The two ends of the first connector are movably connected to the first support rod and the second support rod, respectively, and the two ends of the second connector are movably connected to the first support rod and the second support rod, respectively. The dispensing portion is fixedly connected to the first connector, and the scraper portion is fixedly connected to the second connector.

[0008] According to one aspect of this application, the sealing assembly further includes a first sliding block and a second sliding block, and a slide rail is provided on the support rod; the dispensing part is slidably connected to the slide rail via the first sliding block, and the scraper part is slidably connected to the slide rail via the second sliding block.

[0009] According to one aspect of this application, the sealing assembly further includes a lifting part that is respectively connected to the scraper portion and the support rod, the lifting part being capable of moving the scraper portion away from or closer to the platform.

[0010] According to one aspect of this application, the material of the scraper portion includes silicone; preferably, the dispensing portion includes a cylindrical dispensing cylinder and a conical dispensing head communicating with the dispensing cylinder for dispensing; preferably, the vacuum adsorption holes are uniformly distributed in the receiving area.

[0011] Another aspect of this application provides a method for sealing a display panel, comprising the following steps: providing a display panel sealing device, wherein the display panel sealing device is the display panel sealing device in any of the above embodiments; placing the display panel to be processed on a first surface of a stage, and using an adsorption hole to adsorb and fix the display panel to be processed; controlling the dispensing part to move along a support rod to form a scraping material on the backlight surface of the display panel to be processed; controlling the scraper part to contact the scraping material, and causing the scraper part to move along the support rod so that the scraping material covers the backlight surface of the display panel to be processed, and a portion of the scraping material overflows to the side of the display panel to be processed to form a first encapsulating adhesive.

[0012] According to another aspect of this application, in the step of placing the display panel to be processed on the first surface of the stage and using the adsorption holes to adsorb and fix the display panel to be processed: the display panel to be processed includes a display functional layer and an unbent circuit board connected to the display functional layer; the dispensing part is controlled to move along the support rod, and the adhesive material to be scraped is formed for the first time on the backlight surface of the display functional layer of the display panel to be processed.

[0013] According to another aspect of this application, between the steps of controlling the scraper portion to contact the adhesive material to be scraped and causing the scraper portion to move along the support rod so that the adhesive material to be scraped covers the backlight surface of the display panel to be processed, and a portion of the adhesive material to be scraped overflows to the side of the display panel to be processed to form a first encapsulating adhesive, the method further includes: bending the unbent circuit board to the side of the first encapsulating adhesive away from the display functional layer; controlling the dispensing portion to move along the support rod to form the adhesive material to be scraped a second time on the side of the circuit board away from the first encapsulating adhesive; controlling the scraper portion to contact the adhesive material to be scraped and causing the scraper portion to move along the support rod so that the adhesive material to be scraped covers the side of the circuit board away from the first encapsulating adhesive to form a second encapsulating adhesive.

[0014] Another aspect of this application provides a display panel prepared using the display panel encapsulation apparatus preparation method described in any of the above embodiments.

[0015] Compared with the prior art, the display panel sealing device provided in this embodiment of the invention includes a carrier and a sealing assembly. The carrier is used to support and fix the display panel. Specifically, the display panel can be adsorbed and fixed by the adsorption force generated by the vacuum adsorption holes without damaging the display panel. Furthermore, a receiving area is provided on the edge of the carrier to accommodate excess adhesive after sealing, facilitating recycling and reducing costs. The dispensing part of the sealing assembly can dispense liquid adhesive onto the backlight surface of the display panel to be sealed. The amount of adhesive dispensed can be controlled according to actual needs, and the required adhesive can be formed at different positions on the backlight surface of the display panel by moving the dispensing part along the extension direction of the support rod. After the adhesive is applied, the squeegee part can be used to contact the adhesive material on the backlight side of the display panel. By moving the squeegee part along the support rod, the adhesive material can be applied, allowing it to cover the backlight side of the display panel and overflow to the sides of the display panel. This seals the backlight side and the surrounding area of ​​the display panel, improving the structural strength and reliability of the display panel and preventing light leakage around the edges caused by adhesion tolerances of polarizers or optical adhesives. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a top view of a platform provided in one embodiment of the present invention;

[0018] Figure 2 This is a front view of the platform provided in one embodiment of the present invention;

[0019] Figure 3 This is a top view of a sealing assembly provided in one embodiment of the present invention;

[0020] Figure 4 This is a front view of the scraper section provided in one embodiment of the present invention;

[0021] Figure 5 This is a front view of the dispensing portion provided in one embodiment of the present invention;

[0022] Figure 6 This is a flowchart of a display panel sealing method provided in one embodiment of the present invention;

[0023] Figures 7 to 11 This is a schematic diagram of the structure obtained during the encapsulation process of the display panel encapsulation method provided in this embodiment of the invention.

[0024] In the attached image:

[0025] 10-Stage; 20-Sealing assembly; 21-Support rod; 211-First support rod; 212-Second support rod; 22-Scraper part; 23-Dispensing part; 24-First connector; 25-Second connector; 30-Display panel to be processed; 31-Circuit board; 32-Display functional layer; J1-First encapsulant; J2-Second encapsulant; H1-First sliding block; H2-Second sliding block; F1-First surface; A1-Adsorption area; A2-Receiving area; K-Adhesive tank; Z-Vacuum adsorption hole. Detailed Implementation

[0026] The features and exemplary embodiments of various aspects of this application will now be described in detail. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain this application and are not configured to limit this application. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples of this application.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0028] It should be understood that when describing the structure of a component, when referring to a layer or region as being "above" or "on top of" another layer or region, it can mean that it is directly above the other layer or region, or that it contains other layers or regions between it and the other layer or region. Furthermore, if the component is flipped over, that layer or region will be located "below" or "under" the other layer or region.

[0029] Various modifications and variations can be made to this application without departing from its spirit or scope, which will be apparent to those skilled in the art. Therefore, this application is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the embodiments provided in this application can be combined with each other without contradiction.

[0030] This application provides a display panel sealing device, a display panel sealing method, and a display panel, which will be described below in conjunction with the accompanying drawings. Figures 1 to 11 The following describes various embodiments of the display panel sealing device, the display panel sealing method, and the display panel.

[0031] Please see Figures 1 to 5 , Figure 1 This is a top view of the platform 10 provided in one embodiment of the present invention; Figure 2 This is a front view of the platform 10 provided in one embodiment of the present invention; Figure 3 This is a top view of a sealing assembly 20 provided in one embodiment of the present invention; Figure 4 This is a front view of the scraper section 22 provided in one embodiment of the present invention; Figure 5 This is a front view of the dispensing portion 23 provided in one embodiment of the present invention.

[0032] This application provides a display panel sealing device, including: a stage 10, the stage 10 including a first surface F1 for placing the display panel, the first surface F1 including an adsorption area A1 and a receiving area A2 surrounding the adsorption area A1, the first surface F1 of the adsorption area A1 is provided with a vacuum adsorption hole Z, the first surface F1 of the receiving area A2 is provided with a glue-containing groove K, the glue-containing groove K surrounding the adsorption area A1; and a sealing assembly 20, which is disposed opposite to the first surface F1 of the stage 10, the sealing assembly 20 including a support rod 21, a dispensing part 23 movably connected to the support rod 21, and a scraper part 22 movably connected to the support rod 21. The dispensing part 23 and the scraper part 22 are spaced apart along the extension direction of the support rod 21. The dispensing part 23 can move relative to the support rod 21 along the extension direction of the support rod 21, and the scraper part 22 can move relative to the support rod 21 along the extension direction of the support rod 21. In a direction perpendicular to the extension direction of the support rod 21, the width of the scraper part 22 is greater than the width of the display panel.

[0033] The display panel sealing device provided in this embodiment of the invention includes a stage 10 and a sealing assembly 20. The stage 10 is used to support and fix the display panel. Specifically, the display panel can be adsorbed and fixed by the adsorption force generated by the vacuum adsorption hole Z without damaging the display panel. A receiving area A2 at the edge of the stage 10 is provided with an adhesive reservoir K to hold excess adhesive after sealing, facilitating recycling and reducing costs. The dispensing part 23 of the sealing assembly 20 can dispense liquid adhesive onto the backlight surface of the display panel to be sealed. The amount of adhesive dispensed can be controlled according to actual needs. By moving the dispensing part 23 along the extension direction of the support rod 21, the required adhesive can be formed at different positions on the backlight surface of the display panel. After the dispensing is completed, the scraper part 22 can be used to contact the adhesive material on the backlight side of the display panel, and the scraper part 22 can be used to move along the support rod 21 to apply the adhesive material, so that the adhesive material can cover the backlight side of the display panel and overflow to the side of the display panel, thereby sealing the backlight side and the surrounding area of ​​the display panel, improving the structural strength and reliability of the display panel, and avoiding light leakage problems around the perimeter caused by the adhesion tolerance of polarizers or optical adhesives.

[0034] Please see Figure 2In this embodiment, the display panel is fixed to the adsorption area A1 of the stage 10, and the adhesive tank K in the receiving area A2 is arranged around the placed display panel. When the scraper part 22 moves along the support rod 21 to apply the adhesive, the adhesive can cover the backlight surface of the display panel and overflow to the side of the display panel. The excess adhesive can flow into the adhesive tank K. After the display panel is sealed, the adhesive in the adhesive tank K can be recycled to reduce costs.

[0035] The vacuum adsorption port Z can be connected to a vacuum machine used to generate suction.

[0036] Optionally, the dispensing section 23 may include a cylindrical glue container and a conical dropper connected to the glue container for dispensing glue, facilitating accurate control of the glue drop's falling position. Of course, the dispensing section 23 may also adopt other structural forms, as long as accurate glue dispensing can be achieved.

[0037] Optionally, the scraper portion 22 may include a rectangular plate to ensure that the adhesive material can be scraped evenly.

[0038] It should be noted that, in the direction perpendicular to the extension direction of the support rod 21, the width of the scraper portion 22 is greater than the width of the display panel. This ensures that the adhesive can flow to the side of the display panel under the scraping action of the scraper portion 22, thus completing the sealing of the side of the display panel. If, in the direction perpendicular to the extension direction of the support rod 21, the width of the scraper portion 22 is less than the width of the display panel, the adhesive may only cover the backlight surface of the display panel and may not be able to flow to the side of the display panel under the scraping action of the scraper portion 22. Therefore, it is necessary to limit the scraper portion 22 to extend a certain distance beyond the edge of the display panel in the direction parallel to the backlight surface of the display panel.

[0039] Please see Figures 3 to 5 In some optional embodiments, the sealing assembly 20 includes a first support rod 211 and a second support rod 212, the first support rod 211 and the second support rod 212 extending in the same direction, and the first support rod 211 and the second support rod 212 are spaced apart in a direction perpendicular to the extending direction of the first support rod 211; the dispensing part 23 is connected to both the first support rod 211 and the second support rod 212, and the scraper part 22 is connected to both the first support rod 211 and the second support rod 212.

[0040] It is understood that by setting the first support rod 211 and the second support rod 212 in this embodiment for the movement and fixation of the dispensing part 23 and the scraper part 22, the overall stability of the sealing assembly 20 can be improved. The dispensing part 23 can move along the extension direction of the first support rod 211 and the second support rod 212 under the constraint of the first support rod 211 and the second support rod 212, which has better reliability. Similarly, the scraper part 22 can move along the extension direction of the first support rod 211 and the second support rod 212 under the constraint of the first support rod 211 and the second support rod 212.

[0041] Please see Figures 3 to 5 In some optional embodiments, the sealing assembly 20 further includes a first connector 24 and a second connector 25. Both the first connector 24 and the second connector 25 extend in a direction perpendicular to the extension direction of the first support rod 211. The two ends of the first connector 24 are movably connected to the first support rod 211 and the second support rod 212, respectively. The two ends of the second connector 25 are movably connected to the first support rod 211 and the second support rod 212, respectively. The dispensing part 23 is fixedly connected to the first connector 24, and the scraper part 22 is fixedly connected to the second connector 25.

[0042] In this embodiment, the two ends of the first connector 24 are movably connected to the first support rod 211 and the second support rod 212, respectively. Specifically, the first connector 24 and the first support rod 211 and the second support rod 212 can be movably connected by means of slide rails, sliding grooves, etc. That is, the first connector 24 can drive the dispensing part 23 to move along the extension direction of the first support rod 211 and the second support rod 212. In other words, the dispensing part 23 is indirectly connected to the first support rod 211 and the second support rod 212 through the first connector 24, which facilitates the adjustment of the position of the dispensing part 23.

[0043] The scraper section 22 and the second connecting member 25 are fixedly connected, and a stable connection can be achieved through bolt connection, adhesive layer connection, or welding to avoid relative displacement between the scraper section 22 and the second connecting member 25. Of course, the scraper section 22 and the second connecting member 25 can also be an integral structure, that is, the two are manufactured together to improve structural strength.

[0044] Please see Figures 4 to 5 In some optional embodiments, the sealing assembly 20 further includes a first sliding block H1 and a second sliding block H2, and a slide rail is provided on the support rod 21; the dispensing part 23 is slidably connected to the slide rail via the first sliding block H1, and the scraper part 22 is slidably connected to the slide rail via the second sliding block H2.

[0045] In this embodiment, the dispensing part 23 can be directly slidably connected to the slide rail via the first sliding block H1. Alternatively, when the first connecting member 24 is provided, the dispensing part 23 can be indirectly connected to the first sliding block H1 via the first connecting member 24, and the first connecting member 24 can then be slidably connected to the slide rail via the first sliding block H1, thereby driving the dispensing part 23 to move along the slide rail. Similarly, the scraper part 22 can be directly slidably connected to the slide rail via the second sliding block H2. Alternatively, when the second connecting member 25 is provided, the scraper part 22 can be indirectly connected to the second sliding block H2 via the second connecting member 25, and the second connecting member 25 can then be slidably connected to the slide rail via the second sliding block H2, thereby driving the scraper part 22 to move along the slide rail.

[0046] Optionally, the dispensing section 23 and the scraper section 22 can be moved by a power component such as a cylinder or a motor.

[0047] Alternatively, in addition to the above methods, the dispensing section 23 and the scraper section 22 can be moved by means of a robotic arm.

[0048] In some optional embodiments, the sealing assembly 20 further includes a lifting part that is connected to the scraper part 22 and the support rod 21 respectively, and the lifting part can drive the scraper part 22 away from or closer to the platform 10.

[0049] It should be noted that when the dispensing unit 23 is working, the lifting unit can be controlled to raise the scraper unit 22 away from the platform 10 to avoid affecting the normal operation of the dispensing unit 23. After the dispensing unit 23 completes dispensing, the lifting unit can be controlled to lower the scraper unit 22 towards the platform 10 so that the scraper unit 22 comes into contact with the adhesive material for the subsequent smoothing process.

[0050] Optionally, the lifting unit can adopt a structure such as a cylinder or a robotic arm.

[0051] In some alternative embodiments, the material of the scraper portion 22 includes silicone.

[0052] Optionally, the vacuum adsorption holes Z are evenly distributed in the receiving area A2 to improve the stability of the display panel fixation.

[0053] Please see Figure 6 This invention also provides a method for sealing a display panel, comprising the following steps:

[0054] S110: Provide a display panel sealing device, wherein the display panel sealing device is the display panel sealing device in any of the above embodiments, such as... Figures 2 to 5 As shown;

[0055] S120: The display panel 30 to be processed is placed on the first surface F1 of the stage 10, and the display panel 30 to be processed is fixed by adsorption holes, such as... Figure 7 As shown;

[0056] S130: Control the dispensing part 23 to move along the support rod 21 to form the adhesive material to be scraped on the backlight surface of the display panel 30 to be processed, such as... Figure 5 As shown;

[0057] S140: Control the squeegee part 22 to contact the adhesive material to be squeegeed, and cause the squeegee part 22 to move along the support rod 21 so that the adhesive material to be squeegeed covers the backlight surface of the display panel 30 to be processed, and some of the adhesive material to be squeegeed overflows to the side of the display panel 30 to be processed to form the first encapsulating adhesive J1, such as Figure 8 and Figure 9 As shown.

[0058] In the display panel sealing method provided in this embodiment of the invention, the display panel 30 to be processed can be adsorbed and fixed by the adsorption force generated by the vacuum adsorption hole Z of the stage 10 without damaging the display panel. Furthermore, a glue-containing groove K is provided in the receiving area A2 at the edge of the stage 10 to accommodate excess glue after sealing, facilitating recycling and reducing costs. The glue-dispensing part 23 of the sealing assembly 20 can dispense liquid glue onto the backlight surface of the display panel to be sealed. The amount of glue dispensed can be controlled according to actual needs, and the glue-dispensing part 23 moves along the extension direction of the support rod 21 to form the required glue at different positions on the backlight surface of the display panel. After the dispensing is completed, the scraper part 22 can be used to contact the adhesive material on the backlight side of the display panel, and the scraper part 22 can be used to move along the support rod 21 to apply the adhesive material, so that the adhesive material can cover the backlight side of the display panel and overflow to the side of the display panel, thereby sealing the backlight side and the surrounding area of ​​the display panel, improving the structural strength and reliability of the display panel, and avoiding light leakage problems around the perimeter caused by the adhesion tolerance of polarizers or optical adhesives.

[0059] In step S110, the vacuum adsorption hole Z of the stage 10 can be connected to a vacuum machine used to generate suction.

[0060] Optionally, the dispensing section 23 may include a cylindrical glue container and a conical dropper connected to the glue container for dispensing glue, facilitating accurate control of the glue drop's falling position. Of course, the dispensing section 23 may also adopt other structural forms, as long as accurate glue dispensing can be achieved.

[0061] Optionally, the scraper portion 22 may include a rectangular plate to ensure that the adhesive material can be scraped evenly.

[0062] In some optional embodiments, the sealing assembly 20 further includes a first connector 24 and a second connector 25, both of which extend in a direction perpendicular to the extension direction of the first support rod 211. The two ends of the first connector 24 are movably connected to the first support rod 211 and the second support rod 212, respectively, and the two ends of the second connector 25 are movably connected to the first support rod 211 and the second support rod 212, respectively. The dispensing part 23 is fixedly connected to the first connector 24, and the scraper part 22 is fixedly connected to the second connector 25.

[0063] In this embodiment, the two ends of the first connector 24 are movably connected to the first support rod 211 and the second support rod 212, respectively. Specifically, the first connector 24 and the first support rod 211 and the second support rod 212 can be movably connected by means of slide rails, sliding grooves, etc. That is, the first connector 24 can drive the dispensing part 23 to move along the extension direction of the first support rod 211 and the second support rod 212. In other words, the dispensing part 23 is indirectly connected to the first support rod 211 and the second support rod 212 through the first connector 24, which facilitates the adjustment of the position of the dispensing part 23.

[0064] The scraper section 22 and the second connecting member 25 are fixedly connected, and a stable connection can be achieved through bolt connection, adhesive layer connection, or welding to avoid relative displacement between the scraper section 22 and the second connecting member 25. Of course, the scraper section 22 and the second connecting member 25 can also be an integral structure, that is, the two are manufactured together to improve structural strength.

[0065] In step S120, the display panel is fixed to the adsorption area A1 of the stage 10, and the adhesive tank K in the receiving area A2 is set around the placed display panel. Subsequently, the adhesive can be applied by the movement of the scraper 22 along the support rod 21, so that the adhesive can cover the backlight surface of the display panel and overflow to the side of the display panel. When the excess adhesive flows into the adhesive tank K, the adhesive in the adhesive tank K can be recycled after the display panel is sealed, thus reducing costs.

[0066] In step S130, the dispensing part 23 can move along the support rod 21 to dispense adhesive at different positions on the backlight side of the display panel, ensuring that the amount of adhesive dispensed is sufficient. Under the action of the subsequent scraper part 22, the adhesive can cover the backlight side (back side) and the side of the display panel to complete the sealing.

[0067] In step S140, since the width of the scraper portion 22 is greater than the width of the display panel along the direction perpendicular to the extension direction of the support rod 21, it can be ensured that the adhesive can flow to the side of the display panel under the scraping action of the scraper portion 22, thus completing the sealing of the side of the display panel. If the width of the scraper portion 22 is less than the width of the display panel along the direction perpendicular to the extension direction of the support rod 21, the adhesive may only cover the backlight surface of the display panel and cannot flow to the side of the display panel under the scraping action of the scraper portion 22. Therefore, it is necessary to limit the scraper portion 22 to extend a certain distance relative to the edge of the display panel along the direction parallel to the backlight surface of the display panel.

[0068] In some optional embodiments, the sealing assembly 20 further includes a lifting part that is connected to the scraper part 22 and the support rod 21 respectively, and the lifting part can drive the scraper part 22 away from or closer to the platform 10.

[0069] It should be noted that when the dispensing unit 23 is working, the lifting unit can be controlled to raise the scraper unit 22 away from the platform 10 to avoid affecting the normal operation of the dispensing unit 23. After the dispensing unit 23 completes dispensing, the lifting unit can be controlled to lower the scraper unit 22 towards the platform 10 so that the scraper unit 22 comes into contact with the adhesive material for the subsequent smoothing process.

[0070] Optionally, the lifting unit can adopt a structure such as a cylinder or a robotic arm.

[0071] In some optional embodiments, in the step of placing the display panel 30 to be processed on the first surface F1 of the stage 10 and using the adsorption holes to adsorb and fix the display panel 30 to be processed: the display panel 30 to be processed includes a display functional layer 32 and an unbent circuit board 31 connected to the display functional layer 32; the dispensing part 23 is controlled to move along the support rod 21, and the adhesive material to be scraped is formed for the first time on the backlight surface of the display functional layer 32 of the display panel 30 to be processed.

[0072] In this embodiment, before the circuit board 31 is bent to the backlight surface of the display functional layer 32, the sealing component 20 can be used to perform a sealing process. This involves controlling the dispensing part 23 to move along the support rod 21 to form a first adhesive material to be scraped on the backlight surface of the display functional layer 32 of the display panel 30 to be processed. Then, the scraper part 22 is used to scrape the adhesive material to be scraped flat, forming a first encapsulating adhesive J1 located on the backlight surface and the side of the display functional layer 32 to ensure the protective effect of the first encapsulating adhesive J1 on the display functional layer 32.

[0073] In some optional embodiments, between the steps of controlling the squeegee portion 22 to contact the adhesive material to be squeegeed and moving the squeegee portion 22 along the support rod 21 so that the adhesive material to be squeegeed covers the backlight surface of the display panel 30 to be processed, and partially overflowing the adhesive material to the side of the display panel 30 to be processed to form the first encapsulating adhesive J1, the method further includes: bending the unbent circuit board 31 to the side of the first encapsulating adhesive J1 away from the display functional layer 32; controlling the dispensing portion 23 to move along the support rod 21 to form the adhesive material to be squeegeed a second time on the side of the circuit board 31 away from the first encapsulating adhesive J1; controlling the squeegee portion 22 to contact the adhesive material to be squeegeed and moving the squeegee portion 22 along the support rod 21 so that the adhesive material to be squeegeed covers the side of the circuit board 31 away from the first encapsulating adhesive J1 to form the second encapsulating adhesive J2, as shown. Figures 10 to 11 As shown.

[0074] It is understandable that after bending the unbent circuit board 31 to the side of the first encapsulant J1 away from the display function layer 32, in order to avoid damage to the circuit board 31, the encapsulant assembly 20 can be used to encapsulate the circuit board 31 separately to improve the reliability of the circuit board 31 and prevent damage to the circuit board 31.

[0075] In this embodiment, the dispensing part 23 can be used to drip adhesive onto the surface of the circuit board 31 away from the first encapsulating adhesive J1 to form adhesive material to be scraped. Then, the scraper part 22 is used to spread the adhesive material to be scraped on the surface of the circuit board 31 away from the first encapsulating adhesive J1 to form the second encapsulating adhesive J2, so as to encapsulate and protect the circuit board 31.

[0076] When controlling the squeegee part 22 to contact the adhesive material to be squeegeed, and moving the squeegee part 22 along the support rod 21 so that the adhesive material to be squeegeed covers the side of the circuit board 31 away from the first encapsulating adhesive J1 to form the second encapsulating adhesive J2, considering the influence of the thickness of the circuit board 31 itself, the squeegee part 22 can be appropriately raised, that is, along the thickness direction of the display panel, the distance between the squeegee part 22 and the second adhesive material to be squeegeed is greater than the distance between the squeegee part 22 and the first adhesive material to be squeegeed, so as to avoid the squeegee part 22 damaging the circuit board 31.

[0077] This invention also provides a display panel prepared using the display panel encapsulation apparatus preparation method described in any of the above embodiments.

[0078] Optionally, the display functional layer 32 provided in the embodiments of the present invention may include a substrate, a light-emitting functional layer, and other film layers.

[0079] Optionally, the substrate may include a substrate and an array layer, the array layer including a driving circuit. For example, the array layer may include a first conductive layer, a second conductive layer, and a third conductive layer disposed on one side of the substrate and stacked thereon. An insulating layer is disposed between adjacent conductive film layers. Exemplarily, the pixel driving circuit disposed on the array layer includes a transistor and a storage capacitor. The transistor includes an active layer, a gate, a source, and a drain. The materials of the source and gate may include one or more combinations of molybdenum, titanium, aluminum, copper, etc. The gate of the transistor is typically used to receive a control signal, causing the transistor to turn on or off under the control of the control signal. One of the source and drain of the thin-film transistor is connected to the light-emitting unit to control the normal light emission of the light-emitting unit.

[0080] The substrate can be a rigid substrate, such as a glass substrate, or a flexible substrate, made of materials such as polyimide, polystyrene, polyethylene terephthalate, poly(p-xylene), polyethersulfone, or polyethylene naphthalate. The substrate is mainly used to support the devices mounted on it.

[0081] The storage capacitor includes a first plate and a second plate. As an example, the gate and the first plate can be located in a first conductive layer, the second plate can be located in a second conductive layer, and the source and drain can be located in a third conductive layer.

[0082] Optionally, the display panel also includes a light-emitting functional layer and an encapsulation layer disposed on the side of the array layer away from the substrate, wherein at least one film layer in the light-emitting functional layer and the encapsulation layer can be formed using IJP (Inkjet printing) technology.

[0083] Inkjet printing is a non-contact, micron-level printing process that can be achieved by directly jetting nanoscale solutions onto flexible or rigid substrates. Specifically, inkjet printing involves dissolving OLED materials in a solvent to form a solution, which is then ejected from a printhead in extremely small volumes (picoliters). Each tiny ink droplet is precisely printed onto the pixel electrode, and after drying, it forms the film layer of the device.

[0084] Optionally, the light-emitting functional layer includes a first electrode layer, a light-emitting layer, and a second electrode layer stacked along the direction away from the substrate.

[0085] Optionally, the light-emitting layer includes one or more of the following: an electron injection layer, an electron transport layer, a light-emitting material layer, a hole blocking layer, an electron blocking layer, a hole transport layer, and a hole injection layer. The specific selection depends on the type of light-emitting layer and is not particularly limited. The electron injection layer, electron transport layer, and hole blocking layer can be disposed between the second electrode layer and the light-emitting material layer. The electron blocking layer, hole transport layer, and hole injection layer can be disposed between the first electrode layer and the light-emitting material layer.

[0086] The material of the first electrode layer is generally a material with a high work function to improve hole injection efficiency. It can be gold (Au), platinum (Pt), titanium (Ti), silver (Ag), indium tin oxide (ITO), zinc tin oxide (IZO), or a transparent conductive polymer (such as polyaniline). For example, the first electrode layer can be made of an ITO-Ag-ITO composite material, without any particular limitation.

[0087] The material of the second electrode layer can be one of the following metals: silver (Ag), aluminum (Al), lithium (Li), magnesium (Mg), ytterbium (Yb), calcium (Ca), or indium (In). It can also be an alloy of the aforementioned metals, such as magnesium-silver alloy (Mg / Ag) or lithium-aluminum alloy (Li / Al). This embodiment does not limit the material in this regard.

[0088] Optionally, the encapsulation layer includes a first encapsulation layer, the material of which includes an inorganic material. Specifically, the inorganic material can be silicon nitride, silicon oxide, or silicon oxynitride, and can be formed using a CVD (Chemical Vapor Deposition) process.

[0089] Chemical vapor deposition (CVD) refers to the process of introducing vapors of gaseous or liquid reactants containing elements constituting the thin film, along with other gases required for the reaction, into a reaction chamber to generate a thin film through a chemical reaction on the substrate surface.

[0090] The films formed by chemical vapor deposition are dense and uniform, with strong adhesion between the film and the substrate. The film composition is easy to control, the deposition rate is fast, and the film quality is very stable.

[0091] Optionally, the encapsulation layer also includes a second encapsulation layer located on the side of the first encapsulation layer facing away from the substrate. The material of the second encapsulation layer includes an organic material. The organic material can be made of resin or polymeric organic material, and can be formed using IJP (Inkjet printing) technology.

[0092] Optionally, the encapsulation layer may also include a third encapsulation layer located on the side of the second encapsulation layer away from the substrate. The material of the third encapsulation layer includes inorganic materials. Adding an inorganic encapsulation layer outside the organic encapsulation layer can further improve the encapsulation effect of the encapsulation layer. In this embodiment, the material of the third encapsulation layer may be the same as or different from the material of the first encapsulation layer, and there is no special limitation.

[0093] Optionally, the materials of the first encapsulation layer and the third encapsulation layer are the same, so that the first encapsulation layer and the third encapsulation layer can be manufactured using the same equipment, which can simplify the manufacturing process of the display panel.

[0094] Optionally, the display panel further includes a pixel definition layer disposed on one side of the substrate, the pixel definition layer having pixel openings; the first electrode layer is at least partially disposed within the pixel openings.

[0095] In this embodiment, a pixel definition layer is disposed on the substrate including a pixel opening, and a light-emitting functional layer can be disposed within the pixel opening to realize the light-emitting display of the display panel.

[0096] Optionally, multiple pixel openings are spaced apart, and each pixel opening contains a light-emitting functional layer.

[0097] Optionally, a planarization layer may be included between the substrate and the pixel definition layer. The planarization layer may be made of hexamethyl dimethyl ether, epoxy resin, or polyimide, or other materials. This embodiment does not limit the application of this material.

[0098] Optionally, the display panel may also include a polarizer, a transparent adhesive layer, or other film layers disposed on the side of the light-emitting functional layer facing away from the substrate.

[0099] A polarizer, also known as a beam polarizer, is a key component that controls the polarization direction of a specific light beam. Polarizers are made of various composite materials, primarily including PVA film, TAC film, protective film, release film, and pressure-sensitive adhesive. Among these, the PVA film is the core material, responsible for polarization. It achieves its polarization function by forming ordered arrangements of iodine molecules through stretching and dyeing processes. The TAC film accounts for the highest cost, approximately 50%, while the PVA film accounts for about 12%.

[0100] The transparent adhesive layer can be made of OCA (Optically Clear Adhesive). OCA adhesive uses optical acrylic glue as a base material, and then a release film is laminated on the top and bottom layers to obtain a double-sided adhesive tape without a substrate. OCA adhesive layers have uniform thickness, high flatness, high adhesion, and strong bonding strength after lamination. Of course, other materials can also be used for the transparent adhesive layer, such as double-sided tape.

[0101] The display panel provided in the embodiments of the present invention can be an organic light-emitting diode (OLED) display panel, a quantum dot light-emitting diode (QLED) panel, or a micro flat panel display panel (Micro-OLED or Micro-LED), etc.

[0102] The display panel in this application embodiment includes, but is not limited to, devices with display functions such as mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, and control consoles.

[0103] The above are merely specific embodiments of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application.

[0104] It should also be noted that the exemplary embodiments mentioned in this application describe methods or systems based on a series of steps or apparatus. However, this application is not limited to the order of the above steps; that is, the steps can be performed in the order mentioned in the embodiments, or in a different order, or several steps can be performed simultaneously.

Claims

1. A display panel sealing device, characterized in that, include: A stage, the stage including a first surface for placing a display panel, the first surface including an adsorption area and a receiving area disposed around the adsorption area, the first surface of the adsorption area having a vacuum adsorption hole, the first surface of the receiving area having an adhesive tank, the adhesive tank being disposed around the adsorption area; A sealing assembly is disposed opposite to the first surface of the stage. The sealing assembly includes a support rod, a dispensing part movably connected to the support rod, and a scraper part movably connected to the support rod. The dispensing part and the scraper part are spaced apart along the extension direction of the support rod. The dispensing part is movable relative to the support rod along the extension direction of the support rod, and the scraper part is movable relative to the support rod along the extension direction of the support rod. In a direction perpendicular to the extension direction of the support rod, the width of the scraper part is greater than the width of the display panel.

2. The display panel sealing device according to claim 1, characterized in that, The sealing assembly includes a first support rod and a second support rod, the first support rod and the second support rod extend in the same direction, and the first support rod and the second support rod are spaced apart in a direction perpendicular to the extension direction of the first support rod; The dispensing part is connected to both the first support rod and the second support rod, and the scraper part is also connected to both the first support rod and the second support rod.

3. The display panel sealing device according to claim 2, characterized in that, The sealing assembly further includes a first connector and a second connector. Both the first connector and the second connector extend in a direction perpendicular to the extension direction of the first support rod. The two ends of the first connector are movably connected to the first support rod and the second support rod, respectively. The two ends of the second connector are movably connected to the first support rod and the second support rod, respectively. The dispensing part is fixedly connected to the first connector, and the scraper part is fixedly connected to the second connector.

4. The display panel sealing device according to claim 1, characterized in that, The sealing assembly further includes a first sliding block and a second sliding block, and the support rod is provided with a slide rail; The dispensing section is slidably connected to the slide rail via the first sliding block, and the scraper section is slidably connected to the slide rail via the second sliding block.

5. The display panel sealing device according to claim 1, characterized in that, The sealing assembly also includes a lifting part that connects the scraper part and the support rod respectively. The lifting part can move the scraper part away from or closer to the platform.

6. The display panel sealing device according to claim 1, characterized in that, The material of the scraper section includes silicone; Preferably, the dispensing part includes a cylindrical glue container and a conical dispensing head connected to the glue container for dispensing glue; Preferably, the vacuum adsorption pores are uniformly distributed in the accommodating area.

7. A method for sealing a display panel, characterized in that, Includes the following steps: A display panel sealing device is provided, wherein the display panel sealing device is the same as that described in claims 1 to 6; The display panel to be processed is placed on the first surface of the stage, and the display panel to be processed is adsorbed and fixed by the adsorption holes. The dispensing section is controlled to move along the support rod to form adhesive material to be scraped on the backlight surface of the display panel to be processed; The scraper part is controlled to contact the adhesive material to be scraped, and the scraper part is moved along the support rod so that the adhesive material to be scraped covers the backlight surface of the display panel to be processed, and part of the adhesive material to be scraped overflows to the side of the display panel to be processed to form a first encapsulating adhesive.

8. The display panel sealing method according to claim 7, characterized in that, In the step of placing the display panel to be processed on the first surface of the stage and using the adsorption holes to adsorb and fix the display panel to be processed: The display panel to be processed includes a display functional layer and an unbent circuit board connected to the display functional layer; The dispensing section is controlled to move along the support rod, and the adhesive material to be scraped is formed for the first time on the backlight surface of the display functional layer of the display panel to be processed.

9. The display panel sealing method according to claim 8, characterized in that, Between the steps of contacting the control scraper portion with the adhesive material to be scraped, and moving the scraper portion along the support rod to cover the backlight surface of the display panel to be processed with the adhesive material to be scraped, and partially overflowing the adhesive material to the side of the display panel to be processed to form the first encapsulating adhesive, the method further includes: The unbent circuit board is bent to the side of the first encapsulant away from the display functional layer; The dispensing section is controlled to move along the support rod to form a second adhesive material to be scraped on the side of the circuit board away from the first encapsulating adhesive. The scraper section is controlled to contact the adhesive material to be scraped, and the scraper section is moved along the support rod so that the adhesive material to be scraped covers the side of the circuit board away from the first encapsulating adhesive, thereby forming a second encapsulating adhesive.

10. A display panel, characterized in that, Prepared using the method for preparing the display panel encapsulation apparatus according to any one of claims 7 to 9.

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