Screen, processing method and processing equipment thereof

Abstract

The invention provides a screen, a processing method and processing equipment thereof. According to the scheme, when the screen is laminated, the inclined plane on the display module can gradually extrude the second optical adhesive layer from the middle part to the edge part by extruding the display module. Meanwhile, the second optical adhesive layer and the first optical adhesive layer are heated by the heat conduction film, so that after gas in the second optical adhesive layer is exhausted, the first optical adhesive layer and the second optical adhesive layer are softened to fill and block the exhaust groove, and therefore the gas in the second optical adhesive layer can be efficiently exhausted, and after screen lamination is completed, the first optical adhesive layer and the second optical adhesive layer are sealed. And the screen quality problem caused by cavities or gas in the screen is avoided. And the frame is provided with the frame body and the supporting part, so that the problem that the touch screen is damaged due to stress caused by direct contact between the display module and the touch screen in the laminating process is avoided.

Description

Technical Field

[0001] The present application relates to the field of screen processing, and in particular to a screen, a processing method and equipment thereof. Background Art

[0002] During the touchscreen manufacturing process, the touchscreen display, glass cover, and display module are laminated to form a screen module, which is then assembled into the phone's midframe. Mainstream capacitive touchscreens typically have a thickness between 0.2mm and 0.55mm. During the lamination process, the ultra-thin nature of the touchscreen display prevents it from withstanding excessive pressure. Furthermore, if the pressure is too low, air bubbles within the module cannot be expelled, creating a dilemma.

[0003] Based on this, existing patent application document CN113608636B proposes a display screen assembly and manufacturing method, which involves attaching a first filling laminating layer to a touch display panel and laminating the first filling laminating layer to a display screen protective frame. A stepped supporting ridge is provided on the display screen frame, and a first opening is provided on the stepped supporting ridge. Therefore, during the lamination process, the touch screen panel is first laminated to one side of the display screen protective frame via the first filling laminating layer. The first and second filling laminating layers are respectively filled in the first and second receiving areas of the opening, and the display screen module is placed on the supporting ridge. Therefore, during the lamination process, by applying pressure to the display screen module, the pressure of the display screen module is transmitted to the display screen protective frame via the supporting ridge without directly compressing the touch display panel. During the lamination process, the display screen panel presses the second filling laminating layer to cause it to be squeezed laterally, thereby expelling bubbles in the second receiving area.

[0004] In the lamination process, the above-mentioned prior art extrude the second filling bonding layer by applying a planar force. The second filling bonding layer is essentially OCA optical adhesive, and there will be residual gas inside it. The flat pressing method will not squeeze out the residual gas in the second filling bonding layer at all, and the flow of air in the second receiving area cannot be controlled, resulting in the problem of incomplete bubble discharge. Summary of the Invention

[0005] In view of this, it is necessary to provide a screen, a processing method and a processing device thereof that can exhaust air thoroughly without damaging the touch display panel, so as to solve the above problems.

[0006] An embodiment of the present application provides a screen, comprising:

[0007] Touch screen, thickness range is 0.2mm-0.55mm;

[0008] The frame includes a body and a support portion, wherein the body is surrounded to form a first opening, and the support portion protrudes from the body toward the center thereof and surrounds to form a second opening communicating with the first opening;

[0009] An adhesive assembly comprising a first optical adhesive layer and a second optical adhesive layer, wherein the first optical adhesive layer is adhered to the touch screen and the body, and the second optical adhesive layer is filled in the second opening. The second optical adhesive layer has an adhesive surface facing the first optical adhesive layer, and the adhesive surface is provided with an exhaust groove having a groove width of 100-300 μm and a groove depth of 20-50 μm, and the adhesive surface is attached to the first optical adhesive layer.

[0010] A display module is disposed in the first opening, and the display module has an extrusion surface facing the second optical adhesive layer, the extrusion surface protrudes from the display module, and the protrusion height of the extrusion surface gradually decreases from the central axis of the display module to the surrounding areas;

[0011] A heat-conductive film is provided on the extrusion surface and is arranged in contact with the second optical adhesive layer. The heat-conductive film is used to heat the second optical adhesive layer to drive the gas in the second optical adhesive layer to be discharged through the exhaust groove when the display module is laminated toward the second optical adhesive layer, and to soften the first optical adhesive layer and the second optical adhesive layer to seal the exhaust groove.

[0012] In at least one embodiment of the present application, there are a plurality of the exhaust grooves, and each of the exhaust grooves passes through the second optical adhesive layer along the width direction of the second optical adhesive layer.

[0013] In at least one embodiment of the present application, there are a plurality of exhaust grooves, and the plurality of exhaust grooves are arranged on the adhesive surface at intervals and in parallel.

[0014] In at least one embodiment of the present application, the second optical adhesive layer further includes a resilient portion;

[0015] The rebound portion is floated and filled in the exhaust groove, and is used to soften and fill in the exhaust groove after the display module and the thermal conductive film heat and squeeze the second optical adhesive layer and discharge bubbles in the second optical adhesive layer.

[0016] In at least one embodiment of the present application, the first optical adhesive layer further includes an extrusion portion;

[0017] The extrusion portion is provided on the surface of the first optical adhesive layer facing the second optical adhesive layer, and is used to extend into the exhaust groove to squeeze the rebound portion after the display module and the thermal conductive film heat and extrude the second optical adhesive layer and discharge bubbles in the second optical adhesive layer.

[0018] In at least one embodiment of the present application, the rebound portion and the extrusion portion are both OCA optical adhesive.

[0019] In at least one embodiment of the present application, the width of the extrusion surface is less than or equal to the width of the second opening.

[0020] In at least one embodiment of the present application, the thermally conductive film is a thermally conductive optical silicone film or a polyester film.

[0021] A screen processing method, applied to the screen as described above, is characterized by comprising the following steps:

[0022] Adhere a first optical adhesive layer to the touch screen, and adhere the side of the touch screen with the first optical adhesive layer to the body of the frame;

[0023] inverting the frame and the touch screen;

[0024] Filling the second opening with a second optical adhesive layer and causing the adhesive surface of the second optical adhesive layer to adhere to the first optical adhesive layer;

[0025] Laminating the thermal conductive film on the display module and placing the display module on the support portion of the first opening;

[0026] pressing the display module toward the second optical adhesive layer and heating the thermal conductive film;

[0027] After the second optical adhesive layer is heated, the gas inside the second optical adhesive layer is discharged through the exhaust groove. After the first optical adhesive layer and the second optical adhesive layer are heated, they are fused and the exhaust groove is sealed.

[0028] A screen processing device, used for processing the screen as described above, characterized by comprising:

[0029] A placement component for placing the screen;

[0030] An extrusion assembly, used for extruding the display module to move toward the second optical adhesive layer;

[0031] A heating component is electrically connected to the heat-conducting film and is used to heat the heat-conducting film.

[0032] The screen, processing method, and processing equipment provided above provide an extrusion surface, i.e., an inclined surface, extending from its central axis toward the periphery and gradually decreasing in height, on the display module. A thermally conductive film is provided on the extrusion surface and bonded to the second optical adhesive layer, and venting grooves are provided on the bonding surface where the second optical adhesive layer and the first optical adhesive layer bond. Thus, when the screen is laminated, the inclined surface on the display module gradually squeezes the second optical adhesive layer from the center to the edge by squeezing the display module. Simultaneously, the thermally conductive film heats the second and first optical adhesive layers, causing the first and second optical adhesive layers to soften and fill and seal the venting grooves after the gas within the second optical adhesive layer is discharged. This allows for efficient discharge of gas within the second optical adhesive layer and avoids screen quality issues caused by cavities or gas within the screen after screen lamination is completed. Furthermore, the frame is provided as a main body and support portion, avoiding the problem of direct contact between the display module and the touch screen during the lamination process, which could damage the touch screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the three-dimensional structure of the screen in Example 1 of the present application.

[0034] Figure 2 for Figure 1 The screen is shown in cross-section along the AA direction before lamination.

[0035] Figure 3 for Figure 1 The screen is shown in cross-section along AA when laminated.

[0036] Figure 4 FIG. 4 is a top view of the second optical adhesive layer in one embodiment.

[0037] Figure 5 FIG. 4 is a top view of the second optical adhesive layer in another embodiment.

[0038] Figure 6 This is a flowchart of the screen processing method in Example 2 of this application.

[0039] Description of main component symbols

[0040] 100. Screen; 10. Touch screen; 20. Frame; 21. Main body; 21a. First opening; 22. Support portion; 22a. Second opening; 30. Adhesive assembly; 31. First optical adhesive layer; 311. Extrusion portion; 32. Second optical adhesive layer; 32a. Adhesive surface; 32b. Exhaust groove; 321. Rebound portion; 40. Display module; 40a. Extrusion surface; 50. Thermal conductive film. DETAILED DESCRIPTION

[0041] The embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0042] It should be noted that when a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component. The terms "top", "bottom", "upper", "lower", "left", "right", "front", "back", and similar expressions used herein are for illustrative purposes only.

[0043] The following embodiments of the present application are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features therein may be combined with each other.

[0044] Example 1

[0045] See also Figure 1-Figure 5 , this embodiment 1 provides a screen 100, including a touch screen 10, with a thickness ranging from 0.2mm to 0.55mm;

[0046] The frame 20 includes a body 21 and a support portion 22. The body 21 is surrounded to form a first opening 21a. The support portion 22 protrudes from the body 21 toward the center thereof and surrounds to form a second opening 22a communicating with the first opening 21a.

[0047] The adhesive assembly 30 includes a first optical adhesive layer 31 and a second optical adhesive layer 32. The first optical adhesive layer 31 is adhered to the touch screen 10 and the body 21. The second optical adhesive layer 32 fills the second opening 22a. The second optical adhesive layer 32 has an adhesive surface 32a facing the first optical adhesive layer 31. The adhesive surface 32a has an exhaust groove 32b with a width of 100-300 μm and a depth of 20-50 μm. The adhesive surface 32a is attached to the first optical adhesive layer 31.

[0048] The display module 40 is disposed in the first opening 21 a and has an extrusion surface 40 a facing the second optical adhesive layer 32 . The extrusion surface 40 a protrudes from the display module 40 , and the height of the extrusion surface 40 a gradually decreases from the central axis of the display module 40 toward the periphery.

[0049] The thermally conductive film 50 is disposed on the extrusion surface 40a and is arranged in contact with the second optical adhesive layer 32. It is used to heat the second optical adhesive layer 32 when the display module 40 is laminated toward the second optical adhesive layer 32 to drive the gas in the second optical adhesive layer 32 to be discharged through the exhaust groove 32b, and to soften the first optical adhesive layer 31 and the second optical adhesive layer 32 to seal the exhaust groove 32b.

[0050] It should be noted that the touch screen 10 is mainly composed of a conductive ITO sensing layer, a glass substrate and a buffer layer (which is part of the prior art and will not be elaborated on here). In order to ensure the sensitivity of the touch screen 10, the thickness of the mainstream capacitive display screens currently on the market is generally between 0.2mm and 0.55mm. In the current manufacturing process of the screen 100, the screen 100 module is generally produced and processed by lamination. It is necessary to laminate the touch screen 10, the middle frame and the display module 40 to form the screen 100 module for subsequent assembly of electronic products. In order to ensure the performance of the touch screen 10, it is often necessary to control the touch screen 10 within a certain thickness. When the touch screen 10 is thin, when the force applied during the lamination process is too large, the touch screen 10 will be crushed. When the force used during lamination is small, the air between the layers cannot be discharged, resulting in bubbles in the screen 100 module formed by lamination, which causes display problems on the screen 100.

[0051] The above solution provides an extrusion surface 40a, or inclined surface, on the display module 40, extending from its central axis toward its periphery with a gradually decreasing height. A thermally conductive film 50 is disposed on the extrusion surface 40a and bonded to the second optical adhesive layer 32. Furthermore, venting grooves 32b are provided on the bonding surface 32a where the second optical adhesive layer 32 and the first optical adhesive layer 31 bond. Consequently, when the screen 100 is laminated, the display module 40 is pressed against the inclined surface, gradually squeezing the second optical adhesive layer 32 from its center toward its edges. Simultaneously, the thermally conductive film 50 heats the second optical adhesive layer 32 and the first optical adhesive layer 31. After the gas within the second optical adhesive layer 32 is discharged, the first and second optical adhesive layers 31, 32, soften, and fill and seal the venting grooves 32b. This effectively vents the gas within the second optical adhesive layer 32 and, after lamination of the screen 100, prevents the formation of cavities or gas within the screen 100, which could lead to quality issues with the screen 100. Furthermore, the frame 20 is provided with the main body 21 and the support portion 22 , thereby avoiding the problem that the display module 40 is directly in contact with the touch screen 10 during the lamination process, thereby causing damage to the touch screen 10 .

[0052] For details, please refer to Figure 2 and Figure 3The frame 20 described in this embodiment is a structure similar to a picture frame, with the main body 21 and the support portion 22 integrally formed. That is, the main body 21 is the peripheral structure of the frame 20, and its periphery is enclosed to form an annular outer frame 20, and the area enclosed by it is the first opening 21a. The support portion 22 is a frame structure integrally formed on the inner side of the main body 21, and it is enclosed to form an annular inner frame 20, and the area enclosed by it is the second opening 22a. It can be understood that the frame 20 here is similar to a stepped picture frame structure.

[0053] Furthermore, the touch screen 10 is bonded to the body 21 using the first optical adhesive layer 31, thereby securing the touch screen 10 to the body 21. By filling the second opening 22a with the second optical adhesive layer 32 and bonding it to the first optical adhesive layer 31, the problem of a gap between the first and second optical adhesive layers 31, which could lead to bubbles during the lamination process, is avoided. It is understood that because the first optical adhesive layer 31 is bonded to the body 21 with the exterior facing the second opening 22a, by filling the second optical adhesive layer 32 within the second opening 22a, the second optical adhesive layer 32 exposed through the second opening 22a can directly contact the first optical adhesive layer 31, thus avoiding the problem of bubbles after lamination caused by a gap between them.

[0054] In one embodiment, the first optical adhesive layer 31 and the second optical adhesive layer 32 are both OCA optical adhesive layers. It is understood that the OCA optical adhesive layer is a solid adhesive film that is solid at room temperature and exhibits a softening "viscoelasticity" under pressure or heating (this is common knowledge in the art and will not be elaborated on here).

[0055] Furthermore, since there may be a problem of bubbles not being discharged during the production process of the OCA optical adhesive layer, and in the existing technology (such as patent application document CN113608636B), the bubbles in the second optical adhesive layer 32 are often not discharged by simply squeezing the second optical adhesive layer 32 set in the second opening 22a, and the squeezing is performed in a planar manner, and there is no order of squeezing positions, it is difficult to discharge the bubbles in the gap of the second opening 22a in a specific order, which may cause the edge pressure to squeeze the bubbles at the edge to the middle part, thereby causing excessive accumulation of bubbles in the second optical adhesive layer 32 and affecting the display performance of the screen 100 module after lamination.

[0056] In the first embodiment, an extrusion surface 40a is provided on the surface of the display module 40 facing the second optical adhesive layer 32, and the height of the extrusion surface 40a gradually decreases from the central axis of the display module 40 toward the surrounding areas (i.e., a slanted protrusion structure with a height in the middle and a short height on the surrounding areas). Thus, when the display module 40 is pushed to push the extrusion surface 40a to squeeze the second optical adhesive layer 32, the middle portion of the extrusion surface 40a first contacts the second optical adhesive layer 32, and then the edge portion of the extrusion surface 40a slowly contacts the second optical adhesive layer 32, thereby gradually squeezing from the middle outward. It is understandable that this can be understood as squeezing toothpaste, but here the middle is used as the squeezing point and squeezes outward, thereby squeezing out the bubbles in the middle of the second optical adhesive layer 32 toward the surrounding areas and expelling them from the second optical adhesive layer 32.

[0057] Furthermore, the present application sets a thermally conductive film 50 on the extrusion surface 40a, so that when the display module 40 is pushed to extrude the second optical adhesive layer 32, the thermally conductive film 50 can heat the second optical adhesive layer 32 during the extrusion process, thereby softening the second adhesive layer to facilitate the discharge of gas in the second optical adhesive layer 32.

[0058] In one embodiment, the thermally conductive film 50 is a thermally conductive optical silicone film or a polyester film. Preferably, the thermally conductive film 50 is a transparent thermally conductive silicone structure that is adhered to the extrusion surface 40a so as to simultaneously heat the second optical adhesive layer 32 as the extrusion surface 40a compresses the second optical adhesive layer 32. It is understood that because the thermally conductive film 50 is a transparent silicone structure, after being adhered to the extrusion surface 40a and laminated, it does not affect the light transmittance of the screen 100 module, thereby not significantly affecting the screen 100. Furthermore, the thermally conductive film 50 is connected to an external heating device to be heated by the external heating device.

[0059] Furthermore, in this first embodiment, the exhaust groove 32b is configured to have a groove width of 100-300 μm and a groove depth of 20-50 μm, so that the exhaust groove 32b can be fully filled when the first optical adhesive layer 31 and the second optical adhesive layer 32 soften. It should be understood that the groove width and groove depth described above refer to a very small and shallow exhaust groove 32b on the second optical adhesive layer 32. When the display module 40 presses and heats the second optical adhesive layer 32, the heat heats the second optical adhesive layer 32, driving the gas in the second optical adhesive layer 32 to flow into the exhaust groove 32b for discharge.

[0060] Furthermore, as the temperature continues to rise until it reaches the melting point of the first optical adhesive layer 31 and the second optical adhesive layer 32, the heat will be transferred to the first optical adhesive layer 31 through the second optical adhesive layer 32. At this time, the first optical adhesive layer 31 and the second optical adhesive layer 32 will soften, and the softened structure of the first optical adhesive layer 31 and the second optical adhesive layer 32 near the exhaust groove 32b will flow into and fill the exhaust groove 32b.

[0061] Furthermore, in this embodiment, the width of the exhaust groove 32b is set to 100-300 μm and the depth is set to 20-50 μm to ensure that the gas, after being heated and separated from the second optical adhesive layer 32, can directly enter the exhaust groove 32b and be discharged. It can be understood that due to the width and depth of the exhaust groove 32b, and because the exhaust groove 32b has less resistance than the second optical adhesive layer 32, the gas will flow out along the exhaust groove 32b with less resistance after penetrating the second optical adhesive layer 32.

[0062] It is understandable that due to the capillary guiding effect, the gas will only flow in the exhaust groove 32b and will not penetrate out of the exhaust groove 32b. The specific explanation is as follows:

[0063] The capillary effect is a phenomenon in which a liquid or gas is "spontaneously driven" to move forward in a tiny space. It comes from the interaction between surface tension and solid wall surfaces. Specifically, when the second optical adhesive layer 32 is provided with an exhaust groove 32b structure (width 10-100μm, depth 5-20μm), the groove wall and groove bottom are solid surfaces with a certain "wettability" or "surface energy". The gas molecules in the groove are attracted near these solid surfaces (surface molecular forces). Due to the narrow groove, the gas is more easily guided to slide along the groove wall rather than freely diffuse inside the colloid. More specifically, the physical form of capillary pressure is: Among them, △P is the pressure difference between the inside and outside of the groove (capillary pressure difference); γ is the surface tension between the gas and the wall; θ is the contact angle (wettability); r is the equivalent radius of the groove (the smaller the capillary pressure, the stronger the capillary pressure); thus, in the micron-scale groove, r is extremely small → ΔP is extremely large, which can form self-drive, and the gas is pushed by the capillary pressure difference and will be sucked into the exhaust groove 32b.

[0064] The exhaust groove 32b is provided on the bonding surface 32a, and the bonding surface 32a is provided on the surface where the first optical adhesive layer 31 and the second optical adhesive layer 32 contact each other. When the first optical adhesive layer 31 and the second optical adhesive layer 32 are heated, the gas in the first optical adhesive layer 31 and the second optical adhesive layer 32 will be collected in the exhaust groove 32b, and the bonding surface 32a will make the first optical adhesive layer 31 and the second optical adhesive layer 32 fit more tightly to avoid the formation of gaps.

[0065] Further, in a specific embodiment, please refer to Figure 4There are a plurality of exhaust grooves 32b, each of which penetrates the second optical adhesive layer 32 along the width direction of the second optical adhesive layer 32. By providing the exhaust grooves 32b on the second optical adhesive layer 32, the gas flowing out of the exhaust grooves 32b can be directly discharged into the second opening 22a.

[0066] Furthermore, in another specific embodiment, please refer to Figure 5 The plurality of exhaust grooves 32b are provided on the adhesive surface 32a at intervals and in parallel. Specifically, the plurality of exhaust grooves 32b are short grooves provided on the adhesive surface 32a at intervals and in parallel. Thus, when gas is exhausted from any location within the second optical adhesive layer 32, it is discharged into one of the exhaust grooves 32b.

[0067] In a specific embodiment, please refer to Figure 2 and Figure 3 In order to prevent the first optical adhesive layer 31 and the second optical adhesive layer 32 from being insufficiently softened during heating and unable to fill the exhaust groove 32b, thereby causing gaps and affecting the display effect of the screen 100, the second optical adhesive layer 32 further includes a rebound portion 321; the rebound portion 321 floats and fills the exhaust groove 32b, and is used to soften and fill the exhaust groove 32b after the display module 40 and the thermal conductive film 50 heat and squeeze the second optical adhesive layer 32 and discharge the bubbles in the second optical adhesive layer 32.

[0068] It should be noted that the above scheme fills the rebound portion 321 in the air-venting groove 32b, so that after the first optical adhesive layer 31 and the second optical adhesive layer 32 are softened, the rebound portion 321 will also soften and fill into the air-venting groove 32b, so as to avoid the air-venting groove 32b not being fully filled due to insufficient softening of the first optical adhesive layer 31 and the second optical adhesive layer 32, thereby affecting the optical performance of the laminated thick screen 100.

[0069] In a specific embodiment, the rebound portion 321 is an elastic arched micro-rib structure, and its material is OCA solid optical adhesive, so that when the first optical adhesive layer 31 and the second optical adhesive layer 32 are squeezed and heated, the rebound portion 321 can also be squeezed and heated at the same time to soften and fill the exhaust groove 32b.

[0070] Specifically, the rebound portion 321 can be manufactured using the following process:

[0071] 1. A semi-arched raised structure is formed on the mold through nano-level polishing. Liquid elastic material is injected into the mold and then heated or UV-cured until a resilient semi-arched structure is formed. The formed layer is peeled off / transferred onto a carrier film (PET or OCA film). Specifically, using plasma treatment and initiator assistance, the "ribbed film" is aligned and bonded to the micro-grooved base film / plate, ensuring that the rebound portion 321 overhangs the groove.

[0072] Using laser, dry etching, or gravure embossing technology, ribbed channel areas are etched into a flexible film (such as PET). An elastic polymer material (such as a UV elastic coating) is sprayed directionally within the grooves, automatically forming an arc (arch) shape using surface tension. After UV or thermal curing, the arched rib structure is bonded to the micro-grooved surface to complete the structural docking.

[0073] Furthermore, in order to better fill the exhaust groove 32b, in a specific embodiment, the first optical adhesive layer 31 also includes an extrusion portion 311; the extrusion portion 311 is arranged on the surface of the first optical adhesive layer 31 facing the second optical adhesive layer 32, and is used to extend into the exhaust groove 32b to squeeze the rebound portion 321 after the display module 40 and the thermal conductive film 50 heat and extrude the second optical adhesive layer 32 and discharge the bubbles in the second optical adhesive layer 32.

[0074] Similarly, the extrusion portion 311 is made of the same material and the same manufacturing process as the rebound portion 321 , which will not be described in detail here.

[0075] In a specific embodiment, the rebound portion 321 and the second optical adhesive layer 32 are integrally formed, and the pressing portion 311 and the first optical adhesive layer 31 are integrally formed.

[0076] In a specific embodiment, the rebound portion 321 and the extrusion portion 311 are both made of OCA optical adhesive.

[0077] Furthermore, to ensure the assembly of the extrusion surface 40a and the display module 40, in a specific embodiment, the width of the extrusion surface 40a is less than or equal to the width of the second opening 22a, so that the display module 40 can be placed opposite the first opening 21a during assembly. Since the size of the extrusion surface 40a is smaller than that of the second opening 22a, the extrusion surface 40a can extend into the second opening 22a to push and extrude the second optical adhesive layer 32.

[0078] Example 2

[0079] See also Figure 6 The second embodiment provides a method for processing a screen 100, comprising the following steps:

[0080] S10: bonding the first optical adhesive layer 31 to the touch screen 10 , and bonding the surface of the touch screen 10 with the first optical adhesive layer 31 to the body 21 of the frame 20 ;

[0081] S20: inverting the frame 20 and the touch screen 10;

[0082] S30: filling the second opening 22 a with the second optical adhesive layer 32 and causing the adhesive surface 32 a of the second optical adhesive layer 32 to adhere to the first optical adhesive layer 31 ;

[0083] S40: Laminating the thermal conductive film 50 on the display module 40 and placing the display module on the support portion 22 of the first opening 21 a;

[0084] S50 : pressing the display module 40 toward the second optical adhesive layer 32 and heating the thermal conductive film 50 ;

[0085] S60 : The second optical adhesive layer 32 is heated to discharge the gas therein through the exhaust groove 32 b , and the first optical adhesive layer 31 and the second optical adhesive layer 32 are heated to fuse and seal the exhaust groove 32 b .

[0086] When using the above method, the first optical adhesive layer 31 is first bonded to the touch screen 10 and the body 21 of the frame 20, and then the touch screen 10 and the frame 20 to which the first optical adhesive layer 31 is bonded are turned upside down. Then, the second optical adhesive layer 32 is filled into the second opening 22a, and the bonding surface 32a of the second optical adhesive layer 32 is caused to adhere to the first optical adhesive layer 31, so as to facilitate filling the first optical adhesive layer 31 and the second optical adhesive layer 32 into the frame 20.

[0087] Furthermore, by inverting the frame 20 and the touch screen 10, the display module 40 with the thermal conductive film 50 is placed on the support portion 22 in the first opening 21a. Since the support portion 22 in this embodiment 2 is similar to a step to the main body 21, when the display module 40 is placed on the support portion 22 in the first opening 21a, the display module 40 will not contact the touch screen 10. Therefore, during the lamination process, the display module 40 will not press on the touch screen 10, thereby avoiding the problem of the touch screen 10 being crushed.

[0088] Furthermore, the second optical adhesive layer 32 is squeezed by the display module 40, and the second optical adhesive layer 32 is heated by the heat-conductive film 50 to discharge the gas in the second optical adhesive layer 32 and soften the first optical adhesive layer 31 and the second optical adhesive layer 32. When the gas in the second optical adhesive layer 32 is exhausted, the first optical adhesive layer 31 and the second optical adhesive layer 32 are filled into the exhaust groove 32b to fill the exhaust groove 32b, thereby avoiding the problem of affecting the display of the screen 100 due to the exhaust groove 32b not being filled.

[0089] Since the second embodiment is fully applicable to the screen 100 described in the first embodiment, the second embodiment also has all the beneficial effects of the first embodiment, and will not be elaborated here.

[0090] Example 3

[0091] The third embodiment provides a screen 100 processing device, which applies the screen 100 processing method described in the second embodiment to process the screen 100 described in the first embodiment, specifically including:

[0092] A placement component (not shown), used for placing the screen 100;

[0093] An extrusion assembly (not shown), used for extruding the display module 40 to move toward the second optical adhesive layer 32;

[0094] The heating component (not shown) is electrically connected to the thermally conductive film 50 and is used to heat the thermally conductive film 50 .

[0095] It should be noted that since the placement component, extrusion component and heating component in this embodiment three are existing very mature technologies, which are well known to those skilled in the art, and are not the invention point of this application, they will not be discussed here.

[0096] The above is only an implementation method of the present application. It should be pointed out that for ordinary technicians in this field, improvements can be made without departing from the creative concept of the present application, but these all fall within the scope of protection of the present application.

Claims

1. A screen, characterized in that: include: Touch screen, thickness range is 0.2mm-0.55mm; The frame includes a body and a support portion, wherein the body is surrounded to form a first opening, and the support portion protrudes from the body toward the center thereof and surrounds to form a second opening communicating with the first opening; An adhesive assembly comprising a first optical adhesive layer and a second optical adhesive layer, wherein the first optical adhesive layer is adhered to the touch screen and the body, and the second optical adhesive layer is filled in the second opening. The second optical adhesive layer has an adhesive surface facing the first optical adhesive layer, and the adhesive surface is provided with an exhaust groove having a groove width of 100-300 μm and a groove depth of 20-50 μm, and the adhesive surface is attached to the first optical adhesive layer. A display module is disposed in the first opening, and the display module has an extrusion surface facing the second optical adhesive layer, the extrusion surface protrudes from the display module, and the protrusion height of the extrusion surface gradually decreases from the central axis of the display module to the surrounding areas; A heat-conductive film is provided on the extrusion surface and is arranged in contact with the second optical adhesive layer. The heat-conductive film is used to heat the second optical adhesive layer to drive the gas in the second optical adhesive layer to be discharged through the exhaust groove when the display module is laminated toward the second optical adhesive layer, and to soften the first optical adhesive layer and the second optical adhesive layer to seal the exhaust groove.

2. The screen according to claim 1, characterized in that There are a plurality of the exhaust grooves, and each of the exhaust grooves passes through the second optical adhesive layer along the width direction of the second optical adhesive layer.

3. The screen according to claim 1, characterized in that There are a plurality of exhaust grooves, and the plurality of exhaust grooves are arranged on the bonding surface at intervals and in parallel.

4. The screen according to any one of claims 2 or 3, characterized in that The second optical adhesive layer further includes a rebound portion; The rebound portion is floated and filled in the exhaust groove, and is used to soften and fill in the exhaust groove after the display module and the thermal conductive film heat and squeeze the second optical adhesive layer and discharge bubbles in the second optical adhesive layer.

5. The screen according to claim 4, characterized in that The first optical adhesive layer further includes an extrusion portion; The extrusion portion is provided on the surface of the first optical adhesive layer facing the second optical adhesive layer, and is used to extend into the exhaust groove to squeeze the rebound portion after the display module and the thermal conductive film heat and extrude the second optical adhesive layer and discharge bubbles in the second optical adhesive layer.

6. The screen according to claim 5, characterized in that The rebound portion and the extrusion portion are both OCA optical adhesives.

7. The screen according to claim 1, characterized in that The width of the extrusion surface is less than or equal to the width of the second opening.

8. The screen according to claim 1, characterized in that The thermally conductive film is a thermally conductive optical silicone film or a polyester film.

9. A screen processing method, applied to the screen according to any one of claims 1 to 8, characterized in that: The steps include: Adhere a first optical adhesive layer to the touch screen, and adhere the side of the touch screen with the first optical adhesive layer to the body of the frame; inverting the frame and the touch screen; Filling the second opening with a second optical adhesive layer and causing the adhesive surface of the second optical adhesive layer to adhere to the first optical adhesive layer; Laminating the thermal conductive film on the display module and placing the display module on the support portion of the first opening; pressing the display module toward the second optical adhesive layer and heating the thermal conductive film; After the second optical adhesive layer is heated, the gas inside the second optical adhesive layer is discharged through the exhaust groove. After the first optical adhesive layer and the second optical adhesive layer are heated, they are fused and the exhaust groove is sealed.

10. A screen processing device for processing the screen according to any one of claims 1 to 8, characterized in that: include: A placement component for placing the screen; An extrusion assembly, used for extruding the display module to move toward the second optical adhesive layer; A heating component is electrically connected to the heat-conducting film and is used to heat the heat-conducting film.

Images