Dimming module and vehicle

Abstract

The utility model discloses a dimming module and a vehicle, and aims to solve the problems that the dimming module in the prior art is poor in tolerance and easy to lose efficacy due to the fact that liquid crystal is easy to volatilize and lose. The dimming module is provided with a dimming area and a peripheral area located on the periphery of the dimming area, and the dimming module comprises a first substrate and a dimming part located on one side of the first substrate and located in the dimming area; the first substrate comprises a first sub-substrate located in the dimming area and a second sub-substrate located in the peripheral area and surrounding the first sub-substrate; the dimming part and the second sub-substrate form a first step structure in an edge area; the dimming module further comprises first edge sealing glue located on the side, away from the first substrate, of the first electrode. And the first edge sealing glue covers at least part of the first step structure.

Description

Technical Field

[0001] This utility model relates to the field of liquid crystal technology, and in particular to a dimming module and a vehicle. Background Technology

[0002] The dimming module includes two opposing electrode layers and a dye polymer dispersed liquid crystal layer located between the two electrode layers. The dye polymer dispersed liquid crystal layer includes polymer dispersed liquid crystal (PDLC) and dye molecules. In the dye polymer dispersed liquid crystal layer, when no power is applied, the dye molecules absorb the incident light, and the polymer dispersed liquid crystal scatters the light, presenting a dual state of darkness and privacy. When power is applied, the dye molecules deflect with the polymer dispersed liquid crystal molecules, absorbing less incident light, and presenting a transparent state.

[0003] Dimming modules have advantages such as simple manufacturing process, short response time, fast speed, and no need for polarizers, and have been gradually applied to many electronic components such as soft light, gratings, projection, and dimming glass. However, in existing dimming modules, polymer-dispersed liquid crystals are prone to liquid crystal evaporation and loss during long-term reliability testing in environments such as high temperature and high humidity, resulting in poor module tolerance and easy failure. Utility Model Content

[0004] This invention provides a dimming module and a vehicle to improve the existing dimming module, which is prone to liquid crystal evaporation and loss, resulting in poor module durability and easy failure.

[0005] This utility model embodiment provides a dimming module having a dimming area and a peripheral area located around the dimming area. The dimming module includes: a first substrate and a dimming part located on one side of the first substrate and located in the dimming area.

[0006] The first substrate includes: a first sub-substrate located in the dimming area, and a second sub-substrate located in the peripheral area and surrounding the first sub-substrate; the dimming part and the second sub-substrate form a first step structure in the edge region;

[0007] The dimming module further includes: a first sealing adhesive located on the side of the first electrode opposite to the first substrate; the first sealing adhesive covers at least a portion of the first stepped structure.

[0008] In one possible implementation, the dimming unit has a first surface facing away from the first sub-substrate and a side surface connected to the first surface; the second sub-substrate has a second surface facing the dimming unit.

[0009] The first sealing adhesive covers the edge region of the first surface of the dimming part, the side surface, and the second surface covering the second sub-subbase.

[0010] In one possible implementation, the first edge sealant includes a first sub-edge sealant covering the edge region of the first surface; the thickness of the first sub-edge sealant gradually decreases in the direction from the peripheral region to the dimming region.

[0011] In one possible implementation, the peripheral area includes: a binding area, and a side area other than the binding area;

[0012] The first sealing adhesive includes: a first adhesive portion located in the bonding area and a second adhesive portion located in the side area; in the direction from the dimming area to the peripheral area, the width of the first adhesive portion is greater than the width of the second adhesive portion.

[0013] In one possible implementation, the dimming module further includes: a second substrate, and a polymer-dispersed liquid crystal layer located between the first substrate and the second substrate; the first substrate includes: a first substrate and a first electrode located on the side of the first substrate facing the dimming section; the second substrate includes: a second substrate and a second electrode located on the side of the second substrate facing the dimming section; the second substrate includes: a third sub-substrate located in the dimming region, and a fourth sub-substrate located in the bonding region; the orthographic projection of the polymer-dispersed liquid crystal layer onto the first substrate coincides with the orthographic projection of the third sub-substrate onto the first substrate; the dimming section includes the polymer-dispersed liquid crystal layer and the third sub-substrate;

[0014] The first substrate has a first notch in the bonding area, and the second substrate has a second notch in the bonding area; the first notch and the second notch are distributed in the bonding area along a first direction; the dimming module further includes: a first flexible circuit board and a second flexible circuit board; the first flexible circuit board is bonded and electrically connected to the first electrode of the first substrate through the second notch; the second flexible circuit board is bonded and electrically connected to the second electrode of the second substrate through the first notch.

[0015] In one possible implementation, the first edge sealant covers the side area and the second notch covers the bonding area;

[0016] The dimming module further includes: a second edge-sealing adhesive located on the other side of the first substrate; the second edge-sealing adhesive covers the first notch in the bonding area;

[0017] In the region between the first flexible circuit board and the second flexible circuit board, the first edge sealant and the second edge sealant are connected.

[0018] In one possible implementation, the first edge-sealing adhesive comprises: epoxy adhesive and / or UV-curing adhesive; and / or the second edge-sealing adhesive comprises: epoxy adhesive and / or UV-curing adhesive.

[0019] In one possible implementation, the length of the first adhesive portion ranges from 3 mm to 8 mm in the direction from the dimming area to the peripheral area; and the length of the second adhesive portion ranges from 1 mm to 6 mm in the direction from the dimming area to the peripheral area.

[0020] In one possible implementation, in the side area and in the direction from the dimming area to the peripheral area, the width of the first sealing adhesive covering the second sub-substrate of the second adhesive portion is 2mm to 3mm, and the width of the first sealing adhesive covering the dimming portion is 2mm to 3mm.

[0021] In the direction from the dimming area to the peripheral area in the bonding area, the width of the first sealing adhesive covering the second sub-substrate is 3mm to 5mm, and the width of the first sealing adhesive covering the dimming area is 2mm to 3mm.

[0022] This utility model also provides a vehicle, including: a vehicle window; the vehicle window includes: a first glass disposed opposite to the first glass and a second glass, a dimming module as provided in this utility model located between the first glass and the second glass, and a resin adhesive covering the dimming module.

[0023] The beneficial effects of this utility model embodiment are as follows: In this utility model, the dimming part and the second sub-substrate form a first step structure in the edge region, and the first edge sealing adhesive covers at least part of the first step structure. The setting of the first step structure can make the first edge sealing adhesive and the dimming module have more contact area, so that the first edge sealing adhesive has a better adhesion effect and a better sealing effect on the liquid crystal in the dimming part. This improves the problem that the dimming module in the prior art is prone to liquid crystal evaporation and loss, resulting in poor dimming module tolerance and easy failure. Attached Figure Description

[0024] Figure 1A This is one of the front view diagrams of the dimming module;

[0025] Figure 1B for Figure 1A A schematic diagram of the stacking of the first substrate and the second substrate;

[0026] Figure 1Cfor Figure 1A A schematic diagram of the first basement in the middle;

[0027] Figure 1D for Figure 1A A schematic diagram of the second basement in the middle;

[0028] Figure 1E for Figure 1A A schematic diagram of the first and second edge sealing adhesives;

[0029] Figure 1F for Figure 1A A schematic diagram of the back of the central dimming module;

[0030] Figure 2A for Figure 1A A schematic diagram of the cross-section at the dashed line e1;

[0031] Figure 2B for Figure 1A A schematic diagram of the cross-section at the dashed line e2;

[0032] Figure 2C for Figure 1A A schematic diagram of the cross-section at the dashed line e4;

[0033] Figure 2D for Figure 1A A schematic diagram of the cross-section at the dashed line e3;

[0034] Figure 3A This is the second front view of the dimming module;

[0035] Figure 3B for Figure 3A A schematic diagram of the stacking of the first substrate and the second substrate;

[0036] Figure 3C for Figure 3A A schematic diagram of the first basement in the middle;

[0037] Figure 3D for Figure 3A A schematic diagram of the second basement in the middle;

[0038] Figure 3E for Figure 3A A schematic diagram of the cross-section at the dashed line e1;

[0039] Figure 4A This is the third front view of the dimming module;

[0040] Figure 4B for Figure 4A A schematic diagram of the stacking of the first substrate and the second substrate;

[0041] Figure 4C for Figure 4A A schematic diagram of the first basement in the middle;

[0042] Figure 4D for Figure 4A A schematic diagram of the second basement in the middle;

[0043] Figure 4E for Figure 4A A schematic diagram of the cross-section at the dashed line e1;

[0044] Figure 5 A cross-sectional schematic diagram of the vehicle window provided by this utility model;

[0045] Figure 6 This is a second front view of the dimming module provided in an embodiment of the present utility model;

[0046] Figure 7 This is a second schematic diagram of the back of the dimming module provided in an embodiment of the present invention. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0048] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0049] As used herein, “approximately” or “substantially the same” includes the stated value and means within an acceptable range of deviations from the specific value, as determined by a person skilled in the art taking into account the measurement in question and the errors associated with the measurement of the specific quantity (i.e., limitations of the measurement system). For example, “substantially the same” may mean a difference relative to the stated value within one or more standard deviations, or within ±30%, 20%, 10%, or 5%.

[0050] In the accompanying drawings, the thicknesses of layers, films, panels, regions, etc., are enlarged for clarity. Exemplary embodiments are described herein with reference to cross-sectional views that are schematic diagrams of idealized embodiments. Thus, deviations from the shapes shown in the drawings will be expected as a result of, for example, manufacturing techniques and / or tolerances. Therefore, the embodiments described herein should not be construed as limited to the specific shapes of the regions shown herein, but rather include deviations in shape caused, for example, by manufacturing processes. For example, regions illustrated or described as flat may typically have rough and / or non-linear characteristics. Furthermore, sharp corners illustrated may be rounded. Thus, the regions shown in the figures are schematic in nature, and their shapes are not intended to illustrate the precise shapes of the regions, nor are they intended to limit the scope of the claims.

[0051] To keep the following description of the embodiments of this disclosure clear and concise, detailed descriptions of known functions and known components are omitted.

[0052] See Figures 1A-1F , Figures 2A-2D As shown, where, Figure 1A This is a front view of the dimming module. Figure 1B This is a schematic diagram of the stacking of the first substrate and the second substrate. Figure 1C This is a schematic diagram of the first substrate. Figure 1D This is a schematic diagram of the second substrate. Figure 1E This is a schematic diagram of the first and second edge sealing adhesives. Figure 1F This is a schematic diagram of the back of the dimming module. Figure 2A for Figure 1A A schematic diagram of the cross-section at the dashed line e1. Figure 2B for Figure 1A A schematic diagram of the cross-section at the dashed line e2. Figure 2C for Figure 1A A schematic diagram of the cross-section at the dashed line e4. Figure 2D for Figure 1A A cross-sectional schematic diagram at the dashed line e3 shows that this utility model embodiment provides a dimming module having a dimming area A1 and a peripheral area A2 located around the dimming area A1. The dimming module includes: a first substrate 1, and a dimming part 3 located on one side of the first substrate 1 and located in the dimming area A1; optionally, the area where the dimming part 3 is located can be regarded as the dimming area A1.

[0053] The first substrate 1 includes: a first sub-substrate 101 located in the dimming area A1, and a second sub-substrate 102 located in the peripheral area A2 and surrounding the first sub-substrate 101; the dimming part 3 and the second sub-substrate 102 form a first step structure T in the edge region;

[0054] The dimming module also includes: a first sealing adhesive 4 located on the side of the dimming section 3 opposite to the first substrate 1; the first sealing adhesive 4 covers at least a portion of the first stepped structure T.

[0055] In this invention, the dimming section 3 and the second sub-substrate 102 of the peripheral area A2 form a first stepped structure T at the edge region. The first sealing adhesive 4 covers at least a portion of the first stepped structure T. The setting of the first stepped structure T allows the first sealing adhesive 4 to have a larger contact area with the dimming module, resulting in better adhesion of the first sealing adhesive 4 and a better sealing effect on the liquid crystal in the dimming section 3. This improves the problem of existing dimming modules, which are prone to liquid crystal evaporation and loss, leading to poor dimming module tolerance and easy failure.

[0056] In one possible implementation, see Figures 1A-1F , Figures 2A-2D As shown, the peripheral area A2 may include: a bonding area A21, and a side area A22 other than the bonding area A21; the dimming module also includes: a second substrate 32, and a polymer-dispersed liquid crystal layer 31 located between the first substrate 1 and the second substrate 32; the first substrate 1 includes: a first substrate 11 and a first electrode 12 located on the side of the first substrate 11 facing the dimming unit 3; the second substrate 32 includes: a second substrate 321 and a second electrode 322 located on the side of the second substrate 321 facing the first substrate 1; the second substrate 32 includes: a third sub-substrate 301 located in the dimming area A1, and a fourth sub-substrate 302 located in the bonding area A21; the orthographic projection of the polymer-dispersed liquid crystal layer 31 on the first substrate 1 coincides with the orthographic projection of the third sub-substrate 301 on the first substrate 1; the dimming unit 3 includes the polymer-dispersed liquid crystal layer 31 and the third sub-substrate 301; that is, the polymer-dispersed liquid crystal layer 31 and the third sub-substrate 301 whose projection coincides with the polymer-dispersed liquid crystal layer 31 can be used as the dimming unit 3.

[0057] In one possible implementation, the second substrate 321 may be made of the same material as the first substrate 11. Optionally, the first substrate 11 may be made of polyethylene terephthalate (PET).

[0058] In one possible implementation, the second electrode 322 may be made of the same material as the first electrode 12. In one possible implementation, the first electrode 12 may be a transparent electrode; in one possible implementation, the material of the first electrode 12 may include indium tin oxide (ITO).

[0059] In one possible implementation, combined with Figures 1A-1F , Figures 2A-2DAs shown, the dimming unit 3 has a first surface f1 on the side opposite to the first sub-substrate 101 and a side surface f0 connected to the first surface f1; the second sub-substrate 102 has a second surface f2 facing the dimming unit 3; the first step structure T may include: the edge region of the first surface f1, the side surface f0, and the second surface f2 covering the second sub-substrate 102.

[0060] In one possible implementation, combined with Figures 1A-1F , Figures 2A-2D As shown, the first sealing adhesive 4 covers the edge region of the first surface f1 of the dimming part 3, the side surface f0, and the second surface f2 of the second sub-sub-base 102.

[0061] In one possible implementation, combined with Figures 1A-1F , Figures 2A-2D As shown, the first surface f1 can be the surface of the second substrate 321 facing away from the first substrate 1; the side surface f0 can include: the side surface of the polymer-dispersed liquid crystal layer 31, the side surface of the first electrode 12, and the side surface of the second electrode 322.

[0062] In one possible implementation, combined with Figure 2A As shown, the first edge sealing adhesive 4 includes a first sub-edge sealing adhesive 40 covering the edge region of the first surface f1; the thickness d of the first sub-edge sealing adhesive 40 gradually decreases in the direction from the peripheral area A2 to the dimming area A1. In this way, while ensuring good coverage of the periphery by the first edge sealing adhesive 4, the influence of the first sub-edge sealing adhesive 40 on the light transmission of the internal dimmer A1 is reduced.

[0063] In one possible implementation, combined with Figure 2A As shown, the outer edge of the first sealing adhesive 4 is flush with the outer edge of the second sub-sub-base 102.

[0064] In one possible implementation, combined with Figure 1A As shown, the first sealing adhesive 4 includes a first adhesive portion 41 located in the bonding area A21 and a second adhesive portion 42 located in the side area A22. In the direction from the dimming area A1 to the peripheral area A2, the width b1 of the first adhesive portion 41 is greater than the width b2 of the second adhesive portion 42. In this utility model, since the bonding area A21 is usually also bonded to a flexible circuit board (FPC), it needs to be set wider. In order to achieve better sealing performance of the polymer-dispersed liquid crystal layer 31 in the dimming part 3 and better encapsulation effect of the flexible circuit board (FPC), the width b1 of the first adhesive portion 41 can be set to be greater than the width b2 of the second adhesive portion 42.

[0065] In one possible implementation, combined with Figures 1A-1F , Figures 2A-2DAs shown, the first substrate 101 has a first notch Q1 in the bonding area A21, and the second substrate 32 has a second notch Q2 in the bonding area; the first notch Q1 and the second notch Q2 are distributed along the first direction X in the bonding area A21; the dimming module also includes: a first flexible circuit board FPC1 and a second flexible circuit board FPC2; the first flexible circuit board FPC1 is bonded and electrically connected to the first electrode 11 of the first substrate 1 through the second notch Q2; the second flexible circuit board FPC2 is bonded and electrically connected to the second electrode 322 of the second substrate 32 through the first notch Q1. In this way, the first electrode 12 and the second electrode 322 are respectively connected to the external circuit, thereby realizing the power supply to the first electrode 12 and the second electrode 322.

[0066] In one possible implementation, combined with Figures 1A-1F , Figures 2A-2D As shown, the first sealing adhesive 4 covers the side area A22 and the second notch Q2 covering the bonding area A22; the dimming module also includes: a second sealing adhesive 5 located on the other side of the first substrate 1; the second sealing adhesive 5 covers the first notch Q1 of the bonding area A21; the first sealing adhesive 4 and the second sealing adhesive 5 are connected in the area between the first flexible circuit board FPC1 and the second flexible circuit board FPC2. This achieves complete sealing of the dimming module.

[0067] In one possible implementation, combined with Figures 4A-4E As shown in the figure, the first substrate 1 can be cut off halfway along the first direction X in the bonding area A21 as the first notch Q1, and the second substrate 1 can be cut off halfway along the first direction X in the bonding area A21 as the second notch Q2.

[0068] In another possible implementation, combined Figures 1A-1E As shown, the first substrate 1 can also be cut off at half of the first direction X in the bonding area A21 as the first notch Q1, and the second substrate 1 can be cut off at half of the first direction X in the bonding area A21 as the second notch Q2.

[0069] In another possible implementation, combined Figures 3A-3E As shown, the first base 1 can also be cut off halfway along the first direction X in the binding area A21 as the first notch Q1, and the second base 1 can be cut off halfway along the first direction X in the binding area A21 as the second notch Q2, while retaining the portion D opposite to the second base 1 and the second notch Q2 so as to be flush with the outer edge of the first base 1 perpendicular to the first direction X.

[0070] In one possible implementation, the first edge sealant 4 comprises epoxy adhesive and / or UV-curable adhesive; and / or the second edge sealant 5 comprises epoxy adhesive and / or UV-curable adhesive.

[0071] In one possible implementation, combined with Figure 1A As shown, the width b1 of the first adhesive portion 41 can range from 3mm to 8mm; in one possible embodiment, combined with Figure 1A As shown, the width b2 of the second adhesive portion 42 can range from 1 mm to 6 mm.

[0072] In one possible implementation, combined with Figure 1A , Figure 2B As shown, in the side area A22 and in the direction from the dimming area A1 to the peripheral area A2, the width c1 of the first sealing adhesive 4 covering the second sub-substrate 102 ranges from 2mm to 3mm, and the width c2 of the first sealing adhesive 4 covering the dimming part 3 ranges from 2mm to 3mm.

[0073] In the bonding area A21 and in the direction from the dimming area A1 to the peripheral area A2, the width c3 of the first sealing adhesive 4 covering the second sub-substrate 102 ranges from 3mm to 5mm, and the width c4 of the first sealing adhesive 4 covering the dimming part 3 ranges from 2mm to 3mm.

[0074] Based on the same concept, this utility model also provides a vehicle, including: a window; see also Figure 5 As shown, the car window includes a first glass 8 and a second glass 9 disposed opposite each other, a dimming module as provided in this utility model located between the first glass 8 and the second glass 9, and a resin adhesive 7 covering the dimming module.

[0075] Optionally, the resin adhesive 7 can be a transparent resin. Optionally, the resin adhesive 7 can be polyvinyl butyral (PVB). Optionally, the first glass 8 can be tempered glass or plexiglass. Optionally, the second glass 9 can be tempered glass or plexiglass.

[0076] To better understand the dimming module provided by this utility model, the edge sealing process of the dimming module is further explained below through three embodiments:

[0077] Example 1

[0078] Step 1: Lay the dimming module without the edge sealing adhesive flat on the workbench, remove excess film and material from the step edges (including the binding area and the non-binding area), peel off the protective film on both sides of the dimming module, and ensure that the first step structure interface is normal and free of dust and foreign objects.

[0079] Step 2: Apply adhesive using a pressure device to the steps in both the bonding and unbonded areas. The dry adhesive height should be less than or equal to 200μm above the film surface. The adhesive (i.e., the first sealing adhesive 4) needs to overlap the steps and the film surface (i.e., the first surface f1 of the dimming unit 3). Specifically, the overlap width of the adhesive (i.e., the first sealing adhesive 4) with the first step structure in the unbonded area is 2mm to 3mm, the overlap width of the adhesive (i.e., the first sealing adhesive 4) with the first step structure in the bonding area is 3mm to 5mm, and the overlap width of the adhesive (i.e., the first sealing adhesive 4) with the film surface (i.e., the first surface f1 of the dimming unit 3) is 2mm to 3mm. The total width of the adhesive in the unbonded area is less than 6mm, and the width of the adhesive in the bonding area is less than 8mm. The application of adhesive must be continuous and uniform, without any breaks.

[0080] Before curing, check for any breaks or residual adhesive in the dimming area A1. If there are breaks, manually apply adhesive to fill them in, or clean the already applied adhesive and repeat the above steps. If there is residual adhesive in the dimming area A1, wipe it off and reapply adhesive.

[0081] Step 3: After confirming the adhesive coating is free of defects, heat-cure the dimming module at 80℃ for 1 hour. After curing, remove the dimming module and flip it over. Repeat Step 2 on the other side of the bonding area, applying adhesive as in Step 3. After a second curing, remove the module and cover it with a protective film. A schematic diagram of the front side after adhesive application can be seen as follows: Figure 1A or Figure 6 As shown; a schematic diagram after applying adhesive to the back can be seen as follows. Figure 1F or Figure 7 As shown;

[0082] Alternatively, it may include step four: confirm that the adhesive is free of defects, cure the dimming module of the adhesive with 365nm ultraviolet light at an illuminance of 100-400mw / cm2 for 15-30s, remove the dimming module after curing, repeat step two on the other side of the bonding area step edge, and apply the adhesive. After the second curing in step four, remove the module and cover it with a protective film.

[0083] The above-mentioned painting adhesive was applied at room temperature in a Class 1000 cleanroom environment. The adhesive used in step three was epoxy resin, model EP7285, with a dispensing pressure of approximately 0.3-0.5 MPa. The adhesive used in step four was UV adhesive, model UVLH21 / 29, with a dispensing pressure of approximately 0.3-0.5 MPa.

[0084] Example 2

[0085] Step 1: Lay the dimming module without the edge sealing adhesive flat on the workbench, remove excess film and material from the step edges (including the binding area and the non-binding area), peel off the protective film on both sides of the dimming module, and ensure that the first step structure interface is normal and free of dust and foreign objects.

[0086] Step 2: Apply adhesive using a pressure device to the steps in both the bonding and unbonded areas. The dry adhesive height should be less than or equal to 200μm above the film surface. The adhesive (i.e., the first sealing adhesive 4) needs to overlap the steps and the film surface (i.e., the first surface f1 of the dimming unit 3). Specifically, the overlap width of the adhesive (i.e., the first sealing adhesive 4) with the first step structure in the unbonded area is 2mm to 3mm, the overlap width of the adhesive (i.e., the first sealing adhesive 4) with the first step structure in the bonding area is 3mm to 5mm, and the overlap width of the adhesive (i.e., the first sealing adhesive 4) with the film surface (i.e., the first surface f1 of the dimming unit 3) is 2mm to 3mm. The total width of the adhesive in the unbonded area is less than 6mm, and the width of the adhesive in the bonding area is less than 8mm. The application of adhesive must be continuous and uniform, without any breaks.

[0087] Before curing, check for any breaks or residual adhesive in the dimming area A1. If there are breaks, manually apply adhesive to fill them in, or clean the already applied adhesive and repeat the above steps. If there is residual adhesive in the dimming area A1, wipe it off and reapply adhesive.

[0088] Step 3: Confirm that there are no defects in the adhesive coating. Heat-cur the dimming module with the adhesive coating at 80°C for 1 hour. After curing, remove the dimming module and flip it over. Repeat Step 2 on the other side of the bonding area step edge to apply the adhesive coating. After the second curing in Step 3, remove the module and cover it with a protective film.

[0089] The above-mentioned painting adhesive was applied at room temperature in a Class 1000 cleanroom environment; the paint adhesive used in step three above was epoxy adhesive, model EP7285, with a dispensing pressure of approximately 0.3-0.5 MPa.

[0090] Example 3

[0091] Step 1: Lay the dimming module without the edge sealing adhesive flat on the workbench, remove excess film and material from the step edges (including the binding area and the non-binding area), peel off the protective film on both sides of the dimming module, and ensure that the first step structure interface is normal and free of dust and foreign objects.

[0092] Step 2: Apply adhesive using a pressure device to the steps in both the bonding and unbonded areas. The dry adhesive height should be less than or equal to 200μm above the film surface. The adhesive (i.e., the first sealing adhesive 4) needs to overlap the steps and the film surface (i.e., the first surface f1 of the dimming unit 3). Specifically, the overlap width of the adhesive (i.e., the first sealing adhesive 4) with the first step structure in the unbonded area is 2mm to 3mm, the overlap width of the adhesive (i.e., the first sealing adhesive 4) with the first step structure in the bonding area is 3mm to 5mm, and the overlap width of the adhesive (i.e., the first sealing adhesive 4) with the film surface (i.e., the first surface f1 of the dimming unit 3) is 2mm to 3mm. The total width of the adhesive in the unbonded area is less than 6mm, and the width of the adhesive in the bonding area is less than 8mm. The application of adhesive must be continuous and uniform, without any breaks.

[0093] Before curing, check for any breaks or residual adhesive in the dimming area A1. If there are breaks, manually apply adhesive to fill them in, or clean the already applied adhesive and repeat the above steps. If there is residual adhesive in the dimming area A1, wipe it off and reapply adhesive.

[0094] Step 3: Confirm that there are no defects in the adhesive. Cure the dimming module of the adhesive with 365nm ultraviolet light at an illuminance of 100-400mw / cm2 for 15-30s. After curing, remove the dimming module and repeat Step 2 on the other side of the bonding area step edge to apply the adhesive. After curing twice as in Step 4, remove the module and cover it with a protective film.

[0095] The above-mentioned painting adhesive was applied at room temperature in a Class 1000 cleanroom environment; the paint adhesive used in step three above was a UV adhesive, model UVLH21 / 29, with an application pressure of approximately 0.3-0.5 MPa.

[0096] Although preferred embodiments of this disclosure have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this disclosure.

[0097] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A dimming module having a dimming region and a peripheral region located peripherally of the dimming region, characterized by, The light-adjusting module comprises: a first substrate, a light-adjusting part of the light-adjusting area on one side of the first substrate; The first substrate comprises: a first sub-substrate in the light-adjusting area, and a second sub-substrate surrounding the first sub-substrate in the peripheral area; the light-adjusting part and the second sub-substrate form a first step structure in the edge area; The light-adjusting module further comprises: a first edge sealing glue on the side of the light-adjusting part away from the first substrate; the first edge sealing glue covers at least part of the first step structure.

2. The dimming module of claim 1, wherein, The light-adjusting part has a first surface on the side away from the first sub-substrate, and a side surface connected with the first surface; the second sub-substrate has a second surface on the side facing the light-adjusting part; The first edge sealing glue covers the edge area of the first surface of the light-adjusting part, the side surface, and covers the second surface of the second sub-substrate.

3. The dimming module of claim 2, wherein the first and second dimming circuits are configured to provide a first and second dimming signal, respectively, to the first and second light sources, respectively. The first edge sealing glue comprises a first sub-edge sealing glue covering the edge area of the first surface; in the direction from the peripheral area to the light-adjusting area, the thickness of the first sub-edge sealing glue gradually decreases.

4. The dimming module of any one of claims 1-3, wherein, The peripheral area comprises: a binding area, and a side area other than the binding area; The first edge sealing glue comprises: a first glue part in the binding area, and a second glue part in the side area; in the direction from the light-adjusting area to the peripheral area, the width of the first glue part is greater than the width of the second glue part.

5. The dimming module of claim 4, wherein the first and second dimming circuits are configured to provide a first and second dimming signal, respectively, to the first and second light sources, respectively. The light-adjusting module further comprises: a second substrate, and a polymer dispersed liquid crystal layer between the first substrate and the second substrate; the first substrate comprises: a first substrate and a first electrode on the side of the first substrate facing the light-adjusting part; the second substrate comprises: a second substrate and a second electrode on the side of the second substrate facing the first substrate; the second substrate comprises: a third sub-substrate in the light-adjusting area, and a fourth sub-substrate in the binding area; the polymer dispersed liquid crystal layer in the orthographic projection of the first substrate and the orthographic projection of the third sub-substrate in the first substrate coincide with each other; the light-adjusting part comprises the polymer dispersed liquid crystal layer and the third sub-substrate; The first substrate has a first notch in the binding area, and the second substrate has a second notch in the binding area; the first notch and the second notch are distributed in the binding area along a first direction; the light-adjusting module further comprises: a first flexible circuit board and a second flexible circuit board; the first flexible circuit board is electrically connected with the first electrode of the first substrate through the second notch; the second flexible circuit board is electrically connected with the second electrode of the second substrate through the first notch.

6. The dimming module of claim 5, wherein the first and second dimming circuits are configured to provide a first and second dimming signal, respectively, to the first and second light sources, respectively. The first edge sealing glue covers the side area and covers the second notch of the binding area; The light-adjusting module further comprises: a second edge sealing glue on the other side of the first substrate; the second edge sealing glue covers the first notch of the binding area; The first edge sealing glue and the second edge sealing glue are in communication at the area between the first flexible circuit board and the second flexible circuit board.

7. The dimming module of claim 6, wherein the first and second dimming circuits are configured to provide a first and second dimming signal, respectively, to the first and second light sources, respectively. The first edge sealing glue comprises: epoxy glue and / or ultraviolet curing glue; and / or the second edge sealing glue comprises: epoxy glue and / or ultraviolet curing glue.

8. The dimming module as described in claim 4, characterized in that, The length of the first glue part ranges from 3mm to 8mm in the direction from the light adjusting area to the peripheral area; the length of the second glue part ranges from 1mm to 6mm in the direction from the light adjusting area to the peripheral area.

9. The dimming module of claim 8, wherein the first and second dimming circuits are configured to provide a first and second dimming signal, respectively, to the first and second light sources, respectively. In the side area and in the direction from the light adjusting area to the peripheral area, the width of the first edge sealing glue covering the second sub-base ranges from 2mm to 3mm, and the width of the first edge sealing glue covering the light adjusting part ranges from 2mm to 3mm. In the binding area and in the direction from the light adjusting area to the peripheral area, the width of the first edge sealing glue covering the second sub-base ranges from 3mm to 5mm, and the width of the first edge sealing glue covering the light adjusting part ranges from 2mm to 3mm.

10. A vehicle characterized by comprising: Comprise: A vehicle window; The vehicle window comprises: oppositely arranged first and second glasses, a light adjusting module as claimed in any one of claims 1-9 between the first and second glasses, and a resin glue wrapped around the light adjusting module.

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