Stretchable device and manufacturing method therefor, and beauty treatment apparatus

Abstract

Provided in the present disclosure are a stretchable device and a manufacturing method therefor, and a beauty treatment apparatus. The stretchable device comprises a substrate layer, a plurality of island regions arranged on the substrate layer and separated from each other, a hole region arranged between adjacent island areas, and a bridge region connecting adjacent island regions, wherein at least one island region comprises a sub-pixel. Each island region comprises an anode, a light-emitting layer and a cathode, which are arranged on the substrate layer; and each island region comprises an active light-emitting region and a lap-joint region located on the periphery of the active light-emitting region, wherein the anode and the light-emitting layer cover the active light-emitting region, the cathode covers the active light-emitting region and at least part of the lap-joint region, the lap-joint region comprises an auxiliary cathode arranged on the same layer as the anode, and the cathode is electrically connected to the auxiliary cathode.

Description

A stretchable device, its manufacturing method and beauty device Technical Field

[0001] The present disclosure relates to the technical field of beauty instruments, and in particular to a stretchable device, a manufacturing method thereof, and a beauty device. Background Art

[0002] Stretchable electronics is a key development in flexible electronics. Only when electronic products possess the ability to stretch can they achieve multi-axis curved surface deformation. Display, sensing, and functionalization of complex surfaces are all important applications for flexible electronics. Beyond display, stretchable electronics also has important optoelectronic applications in medical and cosmetic fields. According to relevant literature, different optoelectronic signals can achieve different functions. For example, red light can have a cosmetic effect, and cosmetic products (such as facial masks) are currently available. However, these products suffer from poor light uniformity.

[0003] Summary of the Invention

[0004] The present disclosure provides a stretchable device, a manufacturing method thereof, and a cosmetic device, the specific solutions of which are as follows:

[0005] An embodiment of the present disclosure provides a stretchable device, comprising a substrate layer, and a plurality of island regions disposed on the substrate layer and separated from each other, a hole region disposed between adjacent island regions, and a bridge region connecting adjacent island regions, wherein at least one island region includes a sub-pixel;

[0006] The island area includes an anode, a light-emitting layer and a cathode arranged on the substrate layer, the island area includes an effective light-emitting area and an overlapping area located outside the effective light-emitting area, the anode and the light-emitting layer at least cover the effective light-emitting area, the cathode covers the effective light-emitting area and at least part of the overlapping area, the overlapping area includes an auxiliary cathode arranged on the same layer as the anode, and the cathode is electrically connected to the auxiliary cathode.

[0007] In a possible implementation, in the above-mentioned stretchable device provided in an embodiment of the present disclosure, the auxiliary cathode includes a plurality of overlapping portions located at each corner position of the overlapping area, and the cathode is electrically connected to at least one of the overlapping portions.

[0008] In a possible implementation, in the above-mentioned stretchable device provided in an embodiment of the present disclosure, the auxiliary cathode includes a plurality of overlapping portions located at the center of each side of the overlapping area, and the cathode is electrically connected to at least one of the overlapping portions.

[0009] In a possible implementation, the stretchable device provided in the embodiment of the present disclosure further includes a pixel defining layer located between the anode and the light-emitting layer, and the cathode is electrically connected to the overlapping portion through a via hole penetrating the pixel defining layer.

[0010] In a possible implementation, in the above-mentioned stretchable device provided in an embodiment of the present disclosure, the island region further includes a transition region located outside the overlapping region, the transition region is provided with an annular closed partition groove, and the cathode is disconnected at the partition groove.

[0011] In a possible implementation, the stretchable device provided in the embodiment of the present disclosure further includes: a planar layer located between the substrate layer and the anode, a first passivation layer located between the planar layer and the anode, a second passivation layer located between the first passivation layer and the anode, a first inorganic encapsulation layer located on a side of the cathode facing away from the substrate layer, an organic encapsulation layer located on a side of the first inorganic encapsulation layer facing away from the substrate layer, and a second inorganic encapsulation layer located on a side of the organic encapsulation layer facing away from the substrate layer;

[0012] The partition groove passes through the first passivation layer and at least part of the planar layer, the side of the first passivation layer close to the partition groove protrudes out of the side of the planar layer close to the partition groove, the second passivation layer and the first inorganic encapsulation layer both cover the bottom and sidewalls of the partition groove, and the organic encapsulation layer fills the partition groove.

[0013] In a possible implementation, in the above-mentioned stretchable device provided in an embodiment of the present disclosure, the auxiliary cathode is a closed structure arranged around the effective light-emitting area.

[0014] In one possible implementation, the stretchable device provided in the embodiment of the present disclosure further includes: a planar layer located between the substrate layer and the anode, a pixel defining layer located between the anode and the light-emitting layer, and an annular metal partition structure located between the pixel defining layer and the cathode and located in the overlapping region; the annular metal partition structure is electrically connected to the auxiliary cathode;

[0015] The cathode includes: a first cathode portion located in the annular metal partition structure and in contact with and electrically connected to the annular metal partition structure; and a second cathode portion located on a side of the annular metal partition structure away from the substrate layer.

[0016] In one possible implementation, in the above-mentioned stretchable device provided in the embodiment of the present disclosure, the annular metal partition structure includes: a first conductive structure located between the pixel defining layer and the second cathode portion, and a second conductive structure located between the first conductive structure and the second cathode portion; the first conductive structure is electrically connected to the auxiliary cathode through a via hole passing through the pixel defining layer, the first cathode portion is electrically connected in contact with the first conductive structure, and the orthographic projection area of ​​the bottom surface of the second conductive structure close to the substrate layer on the substrate layer is larger than the orthographic projection area of ​​the top surface of the first conductive structure facing away from the substrate layer on the substrate layer.

[0017] In a possible implementation, in the above-mentioned stretchable device provided in an embodiment of the present disclosure, the material of the pixel defining layer is an inorganic material.

[0018] In a possible implementation, the stretchable device provided in the embodiment of the present disclosure further includes a first power line and a second power line disposed in the bridge region and extending to the island region and electrically connected to the sub-pixel;

[0019] The stretchable device further includes: a barrier layer located between the substrate layer and the planar layer, a first metal layer located between the barrier layer and the planar layer, an interlayer insulating layer located between the first metal layer and the planar layer, and at least one second metal layer located between the interlayer insulating layer and the planar layer;

[0020] The portion of the first power line located in the island area is provided in the first metal layer, the portion of the first power line located in the bridge area includes at least one signal line provided in the second metal layer, the auxiliary cathode is electrically connected to the first transition portion provided in the second metal layer via a via penetrating the planar layer, and the first transition portion is electrically connected to the first power line provided in the first metal layer via a via penetrating the interlayer insulating layer;

[0021] The portion of the second power line located in the island area is set in the first metal layer, the portion of the second power line located in the bridge area includes a signal line set in at least one of the second metal layers, the anode is electrically connected to the second transfer portion located in the second metal layer through a via penetrating the flat layer, and the second transfer portion is electrically connected to the second power line located in the first metal layer through a via penetrating the interlayer insulating layer.

[0022] In a possible implementation, in the stretchable device provided in the embodiment of the present disclosure, the sum of the widths of each of the first power lines and each of the second power lines is greater than 40 μm.

[0023] In a possible implementation, in the above-mentioned stretchable device provided in an embodiment of the present disclosure, the sum of the widths of each of the first power lines and each of the second power lines is the width of the signal line × the number of layers of the signal line × the number of bridge areas between adjacent island areas.

[0024] In a possible implementation, in the above-mentioned stretchable device provided in the embodiment of the present disclosure, the aperture ratio of the stretchable device is greater than 50%.

[0025] Correspondingly, an embodiment of the present disclosure further provides a beauty device, which includes a main body and a stretchable device attached to the main body, and the stretchable device is the above-mentioned stretchable device provided according to the embodiment of the present disclosure.

[0026] In a possible implementation, in the above-mentioned beauty device provided in an embodiment of the present disclosure, the beauty device is a facial mask, and the substrate layer of the stretchable device is away from the body.

[0027] In a possible implementation, the above-mentioned beauty device provided in the embodiment of the present disclosure further includes a protective film attached to the side of the stretchable device facing away from the main body, and the protective film is provided with a through hole corresponding to the hole area of ​​the stretchable device.

[0028] In a possible implementation, in the above-mentioned beauty device provided in an embodiment of the present disclosure, the body is an elastic bearing film having the function of absorbing beauty liquid.

[0029] In a possible implementation, in the above-mentioned beauty device provided in the embodiment of the present disclosure, the body is provided with a mouth opening, a nose opening, and an eye opening.

[0030] In a possible implementation, in the above-mentioned beauty device provided in an embodiment of the present disclosure, the beauty device is a mask, the main body is a curved structure, the stretchable device is fitted in the curved structure, and the substrate layer of the stretchable device is close to the main body.

[0031] In a possible implementation, the above-mentioned beauty device provided in the embodiment of the present disclosure further includes an elastic bearing membrane located between the main body and the substrate layer of the stretchable device, and the elastic bearing membrane is provided with through holes corresponding to the hole area of ​​the stretchable device.

[0032] In a possible implementation, in the above-mentioned beauty device provided in the embodiment of the present disclosure, eye openings are provided on the body.

[0033] In a possible implementation, in the above-mentioned beauty device provided in an embodiment of the present disclosure, two stretchable components are attached to the body, and the two stretchable components are symmetrically arranged along a line connecting the nose and the center of the eyebrows.

[0034] In a possible implementation, in the above-mentioned cosmetic device provided in an embodiment of the present disclosure, the number of hole areas in the stretchable device close to the line connecting the nose and the center of the eyebrows is less than the number of hole areas away from the line connecting the nose and the center of the eyebrows.

[0035] Accordingly, the present disclosure also provides a method for manufacturing a stretchable device, which is used to manufacture the stretchable device provided in the present disclosure. The method comprises:

[0036] forming a plurality of island regions, a plurality of hole regions, and a plurality of bridge regions on the substrate layer, wherein at least one of the island regions includes a sub-pixel;

[0037] An anode, a light-emitting layer and a cathode are formed in the island area along a direction away from the substrate layer; wherein the island area includes an effective light-emitting area and an overlapping area located outside the effective light-emitting area, the anode and the light-emitting layer cover the effective light-emitting area, the cathode covers the effective light-emitting area and at least part of the overlapping area, and the overlapping area includes an auxiliary cathode arranged in the same layer as the anode, and the cathode is electrically connected to the auxiliary cathode. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] FIG1 is a schematic diagram of a planar structure of a stretchable device provided by the present disclosure;

[0039] FIG2 is a schematic diagram of a partial cross-sectional structure of the stretchable device shown in FIG1 ;

[0040] FIG3 is a schematic diagram of another planar structure of a stretchable device provided by the present disclosure;

[0041] FIG4 is a schematic diagram of a partial cross-sectional structure of the stretchable device shown in FIG3 ;

[0042] FIG5 is a schematic diagram of another planar structure of a stretchable device provided by the present disclosure;

[0043] FIG6 is a schematic diagram showing the alignment of a mask for making a light-emitting layer and a mask for making a cathode;

[0044] FIG7 is a schematic flow chart of a method for manufacturing a stretchable device according to an embodiment of the present disclosure;

[0045] 8A-8P are schematic structural diagrams of a stretchable device in a manufacturing process according to an embodiment of the present disclosure;

[0046] FIG9 is a schematic structural diagram of a beauty device provided by the present disclosure;

[0047] FIG10 is a schematic diagram of another structure of the beauty device provided by the present disclosure;

[0048] FIG11 is a schematic plan view of the main body in FIG9 ;

[0049] FIG12 is a planar schematic diagram of two stretchable devices bonded to the body in FIG9 and FIG10. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. And in the absence of conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0051] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the usual meanings understood by persons of ordinary skill in the field to which this disclosure belongs. The words “include” or “comprise” and the like used in this disclosure mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. The words “connect” or “connected” and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. “Inside”, “outside”, “upper”, “lower”, etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0052] It should be noted that the sizes and shapes of the figures in the accompanying drawings do not reflect the actual scale and are only for the purpose of illustrating the present disclosure. The same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions.

[0053] Currently, beauty products that use LED lamp beads as light sources can be distributed throughout the products, as the LEDs are in the form of lamp beads. The inventors of this case conducted research on beauty products on the current market and found that beauty products with different numbers of LED lamp beads have significant price differences. As the number of LED lamp beads increases, the price of the beauty product also increases. The selling point is that the increase in LED lamp beads can significantly improve the uniformity of the light. This is because LED lamp beads have the characteristic of high brightness. Beauty treatments usually require a certain energy range. Exceeding this range can cause damage to the human body. To ensure that the energy does not exceed the standard, LED lamp beads usually provide a high-brightness, small-area light spot, resulting in poor light uniformity. Although increasing the number of LED lamp beads can improve the uniformity problem, LED lamp beads are point light sources and cannot be stretched. The uniformity problem caused by point light sources is difficult to solve.

[0054] In view of this, in order to solve the problem of poor light uniformity in current beauty products (for example, the problem of poor light uniformity in beauty products using LED lamp beads as light sources), the present disclosure provides a stretchable device, as shown in Figures 1 to 4, Figure 1 is a schematic diagram of a planar structure of the stretchable device provided by the present disclosure, Figure 2 is a schematic diagram of a partial cross-sectional structure of the stretchable device shown in Figure 1, Figure 3 is another schematic diagram of a planar structure of the stretchable device provided by the present disclosure, and Figure 4 is a schematic diagram of a partial cross-sectional structure of the stretchable device shown in Figure 3, the stretchable device includes a substrate layer 1, and a substrate layer 1 provided on the substrate layer 1. There are multiple island areas Q1 separated from each other, hole areas Q2 arranged between adjacent island areas Q1, and bridge areas Q3 connecting adjacent island areas Q1, at least one island area Q1 includes a sub-pixel; specifically, the island area Q1 is used to display images, the bridge area Q3 is used for routing (to connect signals between adjacent island areas Q1) and to transmit tension, and the hole area Q2 is used to provide deformation space for the stretchable device during stretching; during the stretching process of the stretchable device, the island area Q1 does not deform, and the bridge area Q3 undertakes large deformation, so as to realize the stress / strain isolation design of the island area Q3 device and realize the stretching deformation capability of the island-bridge structure during the stretching process.

[0055] The stretchable device provided by the embodiment of the present disclosure can achieve a higher stretchability by adopting an island-bridge structure design. Since at least one island area is only provided with one sub-pixel, that is, a single-island single-light-emitting unit design is adopted, compared with the single-island multiple-light-emitting units in the related art, redundant light-emitting units can be removed to reduce the space occupied by pixel gaps, increase the aperture ratio of the stretchable device, and improve the light uniformity of the beauty product, thereby enhancing the beauty effect; in addition, since the stretchable device has multiple hole areas, when applied to beauty products, the beauty products have better air permeability.

[0056] In some embodiments, at least one island region Q1 may include one sub-pixel or multiple sub-pixels. In order to further improve the aperture ratio of the stretchable device, each island region Q1 in some embodiments of the present disclosure is configured to include only one sub-pixel.

[0057] As shown in Figures 1 to 4, the island region Q1 includes an anode 2, a light-emitting layer 3, and a cathode 4, which are sequentially stacked on a substrate layer 1. The island region Q1 includes an effective light-emitting region Q11 and an overlapping region Q12 located outside the effective light-emitting region Q11. The anode 2 and the light-emitting layer 3 at least cover the effective light-emitting region Q11. The cathode 4 covers the effective light-emitting region Q11 and at least a portion of the overlapping region Q12. The overlapping region Q12 includes an auxiliary cathode 5 provided in the same layer as the anode 2, and the cathode 4 is electrically connected to the auxiliary cathode 5. For example, the overlapping region Q12 includes an auxiliary cathode 5 provided in the same layer as the anode 2 and surrounding the effective light-emitting region Q11, and the cathode 4 is electrically connected to the auxiliary cathode 5.

[0058] When the stretchable device provided by the present disclosure is applied to beauty products, passive driving (PM) can be adopted. For example, the first power line (for example, VSS) of the bridge area transmits a signal to the cathode through the auxiliary cathode, and the second power line (for example, VDD) of the bridge area transmits a signal to the anode. Since the auxiliary cathode in the present disclosure is arranged around the effective light-emitting area, the auxiliary cathodes can be designed in a dispersed manner or a circle of auxiliary cathodes can be designed around the effective light-emitting area. When a cathode mask is used to make the cathode, no matter which side the mask is biased to, it will be aligned with at least part of the auxiliary cathode. Therefore, the pixel space occupied by the mask due to alignment deviation can be reduced, thereby further improving the aperture ratio of the stretchable device, thereby further improving the light uniformity of the beauty product, and the high aperture ratio can ensure the energy demand per unit area of ​​the skin, ensuring that the heat in local positions will not be too high to burn the skin.

[0059] The anode 2, light-emitting layer 3 and cathode 4 in the present disclosure constitute an OLED light-emitting device. The stretchable device using the OLED light-emitting device is applied to the phototherapy effect of a beauty product, which can improve the uniformity of the phototherapy brightness, and the stretchable device can be stretched into a corresponding shape according to the required shape of the beauty product. For example, when the stretchable device of the present disclosure is used to make a stretchable mask with a phototherapy effect, it can be stretched according to the needs of different faces, so that the stretchable mask can fit perfectly with different faces; when the stretchable device of the present disclosure is used to make a mask with a phototherapy effect, it can be stretched into the shape of the mask according to the shape of the mask and then fit with the inside of the mask. Therefore, the stretchable device provided by the present disclosure can have good appearance adaptability with various beauty products, expanding the use of beauty products.

[0060] In some embodiments, as shown in FIG. 1 to FIG. 4 , the luminous color of the sub-pixel in the island region Q1 may be red, or green or blue. The luminous color of the sub-pixel is designed according to cosmetic requirements.

[0061] In some embodiments, in the stretchable device provided in the embodiments of the present disclosure, as shown in Figures 2 and 4 , substrate layer 1 can be a flexible substrate layer, enabling the stretchable device to be stretched. Substrate layer 1 can include a single flexible layer, or can include a first flexible layer, a barrier layer, and a second flexible layer stacked together. The embodiments of the present disclosure use substrate layer 1 including a single flexible layer as an example. Specifically, the material of the flexible layer can be polyimide (PI), polyester, polyamide, or the like.

[0062] Specifically, as shown in FIG2 and FIG4 , the base material layer 1 and the film layer thereon can be provided on a glass substrate having a supporting function. After the production of each film layer is completed, the glass substrate is peeled off to obtain a stretchable device.

[0063] It should be noted that, as shown in Figures 2 and 4, the hole region Q2 in the embodiment of the present disclosure may completely penetrate the stretchable device. Of course, the hole region Q2 may also penetrate at least a portion of the film layer on the substrate layer 1 of the stretchable device and a portion of the substrate layer 1. The embodiment of the present disclosure takes the case where the hole region Q2 completely penetrates the stretchable device as an example.

[0064] In some embodiments, in the stretchable device provided by the embodiments of the present disclosure, as shown in Figures 1 and 2, the auxiliary cathode 5 includes a plurality of overlapping portions 51 located at the corners of the overlapping region Q12, and the cathode 4 is electrically connected to at least one overlapping portion 51. In this way, the auxiliary cathode 5 is designed with four corners, as shown in Figure 6, which is a schematic diagram of the alignment of the mask 30 for making the light-emitting layer 3 and the mask 40 for making the cathode. It can be seen that no matter which side the mask 40 of the cathode is biased to, it will be aligned with the overlapping portion 51 on at least one side, thereby reducing the pixel space occupied by the mask 40 due to the alignment deviation, thereby improving the aperture ratio of the stretchable device.

[0065] In some embodiments, in the stretchable device provided by the embodiments of the present disclosure, as shown in FIG5 , the auxiliary cathode 5 may further include a plurality of overlapping portions 51 located at the center of each side of the overlapping region Q12, and the cathode 4 is electrically connected to at least one overlapping portion 51. Providing overlapping portions 51 at the center of each side of the overlapping region Q12 can also reduce the pixel space occupied by the mask due to alignment deviation, thereby improving the aperture ratio of the stretchable device.

[0066] It should be noted that the number of overlapping portions 51 is not limited to the four shown in Figures 1 and 5. Of course, there can be more, as long as they are arranged around the effective light-emitting area Q11; the position of the overlapping portions 51 is not limited to the position shown in Figures 1 and 5, as long as they are dispersed on all sides of the overlapping area Q12.

[0067] In some embodiments, the stretchable device provided in the embodiments of the present disclosure, as shown in FIG2 , further includes a pixel defining layer 6 located between the anode 2 and the light-emitting layer 3, and the cathode 4 is electrically connected to the bridging portion 51 via a via hole penetrating the pixel defining layer 6. This allows signals to be transmitted to the bridging portion 51 and the cathode 4 via the second power line (VSS) in the bridge region, thereby achieving electrical signal transmission.

[0068] In some embodiments, as shown in FIG. 2 , the pixel defining layer 6 has a pixel opening to expose the anode 2 , and the light emitting layer at least covers the pixel opening. The material of the pixel defining layer 6 may be an organic material, such as resin.

[0069] In some embodiments, in the stretchable device provided in the embodiments of the present disclosure, as shown in Figures 1 and 2, the island region Q1 further includes a transition region Q13 located outside the overlap region Q12. The transition region Q13 is provided with an annular, closed partition groove U1, and the cathode 4 is disconnected at the partition groove U1. Because the light-emitting layer 3 and cathode 4 near the hole region Q2 are susceptible to water and oxygen intrusion, the partition groove U1 is configured to surround the sub-pixels within the island region Q1. The partition groove U1 can disconnect the cathode 4 near the hole region Q2 from the cathode 4 located within the sub-pixel. This prevents water and oxygen from invading the light-emitting layer 3 and cathode 4 in the sub-pixel from the hole region Q2, thereby ensuring normal light emission of the OLED device.

[0070] In some embodiments, in the above-mentioned stretchable device provided in the embodiments of the present disclosure, as shown in Figures 1 and 2, it also includes: a flat layer 7 located between the substrate layer 1 and the anode 2, a first passivation layer 8 located between the flat layer 7 and the anode 2, a second passivation layer 9 located between the first passivation layer 8 and the anode 2, a first inorganic encapsulation layer 11 located on the side of the cathode 4 away from the substrate layer 1, an organic encapsulation layer 10 located on the side of the first inorganic encapsulation layer 11 away from the substrate layer 1, and a second inorganic encapsulation layer 12 located on the side of the organic encapsulation layer 10 away from the substrate layer 1; wherein the orthographic projection of the organic encapsulation layer 10 on the substrate layer 1 covers the island area Q1 and the orthographic projection boundary ends at the periphery of the partition groove U1. The thin film encapsulation structure formed by the first inorganic encapsulation layer 11, the organic encapsulation layer 10 and the second inorganic encapsulation layer 12 can reduce the intrusion of water vapor in the external environment into the sub-pixel OLED light-emitting device, thereby reducing the probability of failure of the light-emitting device.

[0071] In some embodiments, in the stretchable device provided in the embodiments of the present disclosure, as shown in Figures 1 and 2, the partition groove U1 penetrates the first passivation layer 8 and at least a portion of the planar layer 7. The side of the first passivation layer 8 near the partition groove U1 protrudes from the side of the planar layer 7 near the partition groove U1. The second passivation layer 9 and the first inorganic encapsulation layer 11 both cover the bottom and sidewalls of the partition groove U1, and the organic encapsulation layer 10 fills the partition groove U1. In this way, the portion of the first passivation layer 8 that protrudes relative to the planar layer 7, together with the side of the planar layer 7 and the bottom near the substrate layer 1, can form an undercut partition structure, which can ensure that the cathode 4 is disconnected at this position, thereby achieving the function of blocking water and oxygen.

[0072] Specifically, the materials of the first passivation layer 8 and the second passivation layer 9 are inorganic materials, and the material of the planarization layer 7 is organic material.

[0073] It should be noted that the embodiment of the present disclosure takes the setting of one partition groove U1 as an example. Of course, in a specific implementation, the number of partition grooves U1 can be 2, 3 or more, and multiple partition grooves U1 are set at intervals.

[0074] In some embodiments, the stretchable device provided in the embodiments of the present disclosure, as shown in FIG1 and FIG2 , further includes: a barrier layer 13 located between the substrate layer 1 and the planar layer 7, a first metal layer 14 (e.g., a gate layer) located between the barrier layer 13 and the planar layer 7, an interlayer insulating layer 15 located between the first metal layer 14 and the planar layer 7, and at least one second metal layer 16 (e.g., an SD layer) located between the interlayer insulating layer 15 and the planar layer 7; wherein,

[0075] The barrier layer 13 is made of an inorganic material. The edge of the first passivation layer 8 is arranged in contact with the edge of the barrier layer 13, so that the flat layer 7 can be wrapped inside the inorganic layer to prevent water vapor from entering the flat layer 7 and transmitting into the light-emitting device.

[0076] In some embodiments, in the above-mentioned stretchable device provided by the embodiment of the present disclosure, as shown in FIG2 , the boundary of the organic encapsulation layer 10 close to the hole area Q2 generally covers the periphery of the partition groove U1, that is, the orthographic projection of the organic encapsulation layer 10 on the substrate layer 1 is located within the orthographic projection boundary of the first inorganic encapsulation layer 11 and the second inorganic encapsulation layer 12 on the substrate layer 1, so that the first inorganic encapsulation layer 11 and the second inorganic encapsulation layer 12 wrap the organic encapsulation layer 10 to prevent water vapor from entering the organic encapsulation layer 10; at the position of the island area Q1 close to the hole area Q2, the interlayer insulating layer 15 is retracted relative to the barrier layer 13, that is, the interlayer insulating layer 15 and the barrier layer 13 are in the island area. A step structure is formed at the position of Q1 near the hole area Q2, and the boundary of the flat layer 7 near the hole area Q2 is located between the boundary of the interlayer insulating layer 15 and the boundary of the barrier layer 13. The first passivation layer 8 and the barrier layer 13 are in contact at the position of the island area Q1 near the hole area Q2. The orthographic projection boundary of the first passivation layer 8 and the barrier layer 13 on the substrate layer 1 is located within the orthographic projection boundary of the second passivation layer 9, the first inorganic encapsulation layer 11 and the second inorganic encapsulation layer 12 on the substrate layer 1, and the first passivation layer 8 is in direct contact with the substrate layer 1, so that the flat layer 7 can be wrapped inside the inorganic layers to prevent external water and oxygen from entering the flat layer 7, which can further block water and oxygen.

[0077] In some embodiments, in the stretchable device provided by the embodiments of the present disclosure, as shown in FIG2 , the insulating layer of the bridge region Q3 of the embodiment of the present disclosure mainly includes a barrier layer 13, a planarization layer 7, a first passivation layer 8, a second passivation layer 9, a first inorganic encapsulation layer 11, and a second inorganic encapsulation layer 12 located on the substrate layer 1, while the interlayer insulating layer 15, the pixel defining layer 6, and the organic encapsulation layer 10 are removed. This can reduce the number of inorganic layers in the bridge region Q3 and reduce the height of the bridge region Q3, thereby preventing the risk of fracture in the bridge region Q3 due to excessive inorganic layers during stretching. Of course, the insulating layer of the bridge region Q3 can be selected according to the stretching requirements.

[0078] In some embodiments, the stretchable device provided in the embodiments of the present disclosure, as shown in FIG1 and FIG2 , further includes a first power line VSS and a second power line VDD provided in the bridge region Q3 and extending to the island region Q1 and electrically connected to the sub-pixels; wherein,

[0079] The portion of the first power line VSS located in the island region Q1 is provided in the first metal layer 14. The portion of the first power line VSS located in the bridge region Q3 includes a signal line provided in at least one second metal layer 16. The auxiliary cathode 5 is electrically connected to the first transfer portion 161 located in the second metal layer 16 via a via penetrating the second passivation layer 9, the first passivation layer 8, and the planar layer 7. The first transfer portion 161 is electrically connected to the first power line VSS located in the first metal layer 14 via a via penetrating the interlayer insulating layer 15. In this way, the first power line VSS transmits the cathode signal to the cathode 4 via the first transfer portion 161 and the auxiliary cathode 5. Furthermore, the first power line VSS located in the island region Q1 is routed using the first metal layer 14. This can prevent the first power line VSS from entering the bridge region Q3 by routing from the edge of the planar layer 7, thereby preventing water and oxygen from entering the planar layer 7, and thus causing the light-emitting layer 3 to be corroded by water and oxygen.

[0080] The portion of the second power line VDD located in the island area Q1 is arranged in the first metal layer 14, and the portion of the second power line VDD located in the bridge area Q3 includes a signal line arranged in at least one second metal layer 16. The anode 2 is electrically connected to the second transfer portion 162 located in the second metal layer 16 through a via penetrating the second passivation layer 9, the first passivation layer 8 and the flat layer 7. The second transfer portion 162 is electrically connected to the second power line VDD located in the first metal layer 14 through a via penetrating the interlayer insulating layer 15; in this way, the second power line VDD transmits the anode signal to the anode 2 through the second transfer portion 162, and the second power line VDD located in the island area Q1 is routed using the first metal layer 14, which can avoid the second power line VDD from being routed from the edge of the flat layer 7 into the bridge area Q3, causing external water and oxygen to enter the flat layer 7, and then causing the light-emitting layer 3 to be corroded by water and oxygen.

[0081] In some embodiments, in the embodiment of the present disclosure, the first power line VSS and the second power line VDD can be led out to the border area of ​​the stretchable device, and then bound to an external circuit board to transmit electrical signals to the first power line VSS and the second power line VDD through the external circuit board.

[0082] It should be noted that the first power line VSS and the second power line VDD located in the island area Q1 can be jumped from the first metal layer 14 to the second metal layer near the bridge area Q3 to realize the routing of the first power line VSS and the second power line VDD of the bridge area Q3 in the second metal layer 16.

[0083] In some embodiments, as shown in FIG2 , the embodiment of the present disclosure includes only one first metal layer 14 (SD), that is, the first power line VSS and the second power line VDD both adopt a single-layer SD routing in the bridge area Q3. Of course, in a specific implementation, the stretchable device may also include two or even more layers of the first metal layer 14 (SD), so that the first power line VSS and the second power line VDD may adopt a double or more layers of SD routing in the bridge area Q3. The multi-layer routing parallel design can reduce the resistance of the first power line VSS and the second power line VDD.

[0084] In some embodiments, in the above-mentioned stretchable device provided in the embodiments of the present disclosure, as shown in Figures 1 and 2, in order to make the stretchable device a high-brightness and high-aperture device, the operating current of the OLED needs to be large, so it is necessary to ensure that the sum of the widths of the first power line VSS and the second power line VDD is greater than 40μm. Since the widths of the first power line VSS and the second power line VDD are too large, which is not conducive to stretching, the stretching amount of the stretchable device must also be ensured. Therefore, the first power line VSS and the second power line VDD can be split into multiple lines, as long as the total width is greater than 40μm.

[0085] In some embodiments, the first power line VSS and the second power line VDD are split into multiple routings. The number of bridge areas can be increased without changing the number of routing layers. For example, a power line with a width of 20 μm and a single-layer routing is originally a bridge. Now, the power line can be split into four bridges with a width of 5 μm respectively. In this way, the total width of the power line remains unchanged. Splitting into multiple bridges can increase the stretching amount. Alternatively, the number of bridge areas can be increased without changing the number of routing layers. For example, a power line with a width of 20 μm and a single-layer routing is originally a bridge. Now, the single-layer routing can be designed as a double-layer routing, and the width of each routing layer is 10 μm. In this way, the total width of the power line remains unchanged. Splitting into a double-layer routing can also increase the stretching amount.

[0086] In some embodiments, in the above-mentioned stretchable device provided in the embodiments of the present disclosure, as shown in Figures 1 and 2, the sum of the widths of each first power line VSS and each second power line VDD is the width of the signal line (the bridge area Q3 is located in the signal line of the second metal layer 16) × the number of layers of the signal line × the number of bridge areas between adjacent island areas. For example, the width of the signal line in the bridge area Q3 in Figure 2 is one value, the number of layers of the signal line is 1, and the number of bridge areas is 2. In this way, the width of a single signal line must be greater than 20μm to ensure that the sum of the widths of the first power line VSS and the second power line VDD is greater than 40μm. If the number of layers of the signal line is 2 and the number of bridge areas is 4, the width of a single signal line only needs to be greater than 5μm. Therefore, the width of a single signal line can be determined based on the number of layers of the signal line and the number of bridge areas.

[0087] In specific implementation, the aperture ratio and stretching amount of the stretchable device are related to the number of layers of the second metal layer (signal line), the number of bridge areas between adjacent island areas, the width of the signal line, the length of the island area, and the distance between adjacent island areas (island spacing). The following tables are the parameters related to the number of layers of signal lines, the number of bridge areas, the width of the signal line, the length of the island area, and the distance between adjacent island areas corresponding to several high aperture ratios and high stretching amounts provided by the inventors of the embodiments disclosed herein, all of which adopt the stretchable device structure shown in Figure 2.

[0088] Table 1

[0089] Table 2

[0090] Table 3

[0091] Table 4

[0092] According to the above table, the present disclosure can adjust the number of signal line layers, the number of bridge areas, the signal line width, the island area length and the island spacing to adjust the opening ratio and stretching amount of the stretchable device, so as to obtain a stretchable device with high stretching amount and high opening ratio, thereby improving the cosmetic effect.

[0093] In some embodiments, in the stretchable device provided by the embodiments of the present disclosure, as shown in Figures 3 and 4 , the auxiliary cathode 5 is a closed structure disposed around the effective light-emitting region Q11. With this annular closed structure, the auxiliary cathode 5 is aligned with the auxiliary cathode 5 on at least one side, regardless of which side the cathode mask is tilted toward. This reduces the pixel space occupied by the mask due to misalignment, thereby increasing the aperture ratio of the stretchable device.

[0094] In some embodiments, the stretchable device provided in the embodiments of the present disclosure, as shown in FIG3 and FIG4 , further includes: a planar layer 7 located between the substrate layer 1 and the anode 2, a pixel defining layer 6 located between the anode 2 and the light-emitting layer 3, and an annular metal partition structure U2 located between the pixel defining layer 6 and the cathode 4 and located in the overlapping region Q12; the annular metal partition structure U2 is electrically connected to the auxiliary cathode 5;

[0095] The cathode 4 includes: a first cathode portion 41 located in the annular metal partition structure U2 and in contact and electrical connection with the annular metal partition structure U2, and a second cathode portion 42 located on the side of the annular metal partition structure U2 facing away from the substrate layer 1. In this way, the embodiment of the present disclosure sets an annular metal partition structure U2 in the overlap area Q12, and the cathode 4 is disconnected at the position of the annular metal partition structure U2, using the water-blocking properties of the metal to improve the packaging capability, and the first cathode portion 41 located in the annular metal partition structure U2 is designed to be in contact and electrically connected with the annular metal partition structure U2, and the annular metal partition structure U2 is electrically connected to the auxiliary cathode 5, so that the cathode 4 of the effective light-emitting area Q11 is electrically connected to the auxiliary cathode 5, and the cathode signal is turned on. In addition, by directly setting an annular metal partition structure U2 electrically connected to the auxiliary cathode 5 in the overlap area Q12, there is no need to design the partition groove U1 shown in Figure 2, so that the effective light-emitting area Q11 can be designed to be larger, thereby reducing the width of the side frame structure, reducing the space occupied by the packaging frame, and further improving the aperture ratio.

[0096] In some embodiments, in the above-mentioned stretchable device provided in the embodiments of the present disclosure, as shown in Figures 3 and 4, the annular metal partition structure U2 includes: a first conductive structure 17 located between the pixel defining layer 6 and the second cathode portion 42, and a second conductive structure 18 located between the first conductive structure 17 and the second cathode portion 42; the first conductive structure 17 is electrically connected to the auxiliary cathode 5 through a via penetrating the pixel defining layer 6, the first cathode portion 41 is in contact and electrically connected with the first conductive structure 17, and the orthographic projection area of ​​the bottom surface of the second conductive structure 18 close to the substrate layer 1 on the substrate layer 1 is larger than the orthographic projection area of ​​the top surface of the first conductive structure 17 facing away from the substrate layer 1 on the substrate layer 1. In this way, the first conductive structure 17 and the second conductive structure 18 form an undercut annular metal partition structure U2 with a larger top and a smaller bottom, which can ensure that the cathode 4 is disconnected at the position of the annular metal partition structure U2. At the same time, the annular metal partition structure U2 is used as an intermediate conductive layer to connect the cathode 4 and the auxiliary cathode 5, which can further reduce the resistance of the cathode 5 and improve the luminous efficiency.

[0097] In some embodiments, in the above-mentioned stretchable device provided in the embodiments of the present disclosure, as shown in Figure 4, the material of the first conductive structure 17 may be but is not limited to Al, and the material of the second conductive structure 18 may be but is not limited to Ti. In this way, the different etching rates of Al and Ti can be utilized to form a bottom-cut annular metal partition structure U2.

[0098] In some embodiments, in the above-mentioned stretchable device provided in the embodiments of the present disclosure, as shown in Figure 4, the material of the pixel defining layer 6 is an inorganic material. Since inorganic materials can form a layer structure through sputtering and evaporation processes, compared with organic materials that need to form a layer structure through coating, inorganic materials can be made thinner, avoiding the problem of lack of connectivity between the first conductive structure 17 and the auxiliary cathode 5 due to the via hole of the pixel defining layer 6 being too deep.

[0099] Optionally, the inorganic material used to make the pixel defining layer includes at least one of the following: silicon oxide, silicon nitride, and silicon carbonitride.

[0100] It should be noted that since the material of the pixel defining layer 6 shown in Figure 4 is an inorganic material, and the water-blocking performance of inorganic materials is good, this embodiment does not need to produce the first passivation layer 8 and the second passivation layer 9 shown in Figure 2. Therefore, this embodiment can reduce the thickness of the stretchable device and further improve the stretching performance.

[0101] In some embodiments, the above-mentioned stretchable device provided in the embodiments of the present disclosure, as shown in Figure 4, also includes: a barrier layer 13 located between the substrate layer 1 and the flat layer 7, a first metal layer 14 (for example, a Gate layer) located between the barrier layer 13 and the flat layer 7, an interlayer insulating layer 15 located between the first metal layer 14 and the flat layer 7, at least one second metal layer 16 (for example, an SD layer) located between the interlayer insulating layer 15 and the flat layer 7, a first inorganic encapsulation layer 11 located on the side of the cathode 4 facing away from the substrate layer 1, an organic encapsulation layer 10 located on the side of the first inorganic encapsulation layer 11 facing away from the substrate layer 1, and a second inorganic encapsulation layer 12 located on the side of the organic encapsulation layer 10 facing away from the substrate layer 1.

[0102] It should be noted that the functions and effects of the above-mentioned film layers can be found in the relevant description of the structure shown in FIG2 , and will not be described in detail here.

[0103] In some embodiments, the above-mentioned stretchable device provided in the embodiments of the present disclosure, as shown in Figures 3 and 4, also includes a first power line VSS and a second power line VDD arranged in the bridge area Q3 and extending to the island area Q1 and electrically connected to the sub-pixels. The routing method and related width design of the first power line VSS and the second power line VDD in this embodiment are the same as those in the embodiments shown in Figures 1 and 2. For details, please refer to the relevant description in the embodiments shown in Figures 1 and 2, and this embodiment will not be repeated here.

[0104] In some embodiments, in the above-mentioned stretchable device provided in the embodiments of the present disclosure, as shown in Figure 4, the orthographic projection of the organic encapsulation layer 10 on the substrate layer 1 is located within the orthographic projection boundary of the first inorganic encapsulation layer 11 and the second inorganic encapsulation layer 12 on the substrate layer 1, so that the first inorganic encapsulation layer 11 and the second inorganic encapsulation layer 12 wrap the organic encapsulation layer 10 to prevent water vapor from entering the organic encapsulation layer 10; at the position of the island area Q1 close to the hole area Q2, the boundaries of the pixel defining layer 6 and the flattening layer 7 close to the hole area Q2 are retracted relative to the boundary of the interlayer insulating layer 15, and the orthographic projection boundaries of the pixel defining layer 6 and the flattening layer 7 on the substrate layer 1 are located within the orthographic projection boundaries of the first inorganic encapsulation layer 11 and the second inorganic encapsulation layer 12 on the substrate layer 1, and the first inorganic encapsulation layer 11 and the second inorganic encapsulation layer 12 are directly contacted with the interlayer insulating layer 15, so that the flattening layer 7 can be wrapped inside each inorganic layer to prevent external water and oxygen from entering the flattening layer 7, which can further block water and oxygen.

[0105] In some embodiments, in the above-mentioned stretchable device provided in the embodiments of the present disclosure, as shown in Figure 4, the distance from the top surface of the partition structure U2 facing away from the substrate layer 1 to the substrate layer 1 is higher than the distance from the light-emitting layer 3 to the substrate layer 1, so that the cathode 4 can be ensured to be disconnected. However, if the partition structure U2 with a certain height is too close to the hole area Q2, it is easy to affect the encapsulation effect of the second inorganic encapsulation layer 12. Therefore, the distance between the partition structure U2 and the boundary of the organic encapsulation layer 10 close to the hole area Q2 can be greater than the distance between the boundary of the organic encapsulation layer 10 close to the hole area Q2 and the hole area Q2, thereby ensuring the encapsulation effect.

[0106] In some embodiments, in the stretchable device provided by the embodiments of the present disclosure, as shown in FIG4 , the insulating layer of the bridge region Q3 of the embodiment of the present disclosure mainly includes a barrier layer 13, a planarization layer 7, a first inorganic encapsulation layer 11, and a second inorganic encapsulation layer 12 located on the substrate layer 1, while the interlayer insulating layer 15, the pixel defining layer 6, and the organic encapsulation layer 10 are removed. This can reduce the number of inorganic layers in the bridge region Q3 and lower the height of the bridge region Q3, thereby preventing the risk of fracture in the bridge region Q3 due to excessive inorganic layers during stretching. Of course, the insulating layer of the bridge region Q3 can be selected according to the stretching requirements.

[0107] In some embodiments, in the above-mentioned stretchable device provided in the embodiments of the present disclosure, as shown in Figures 1 to 4, the aperture ratio of the stretchable device provided in the embodiments of the present disclosure is greater than 50%; further, the aperture ratio of the stretchable device is greater than 60%. The specific aperture ratio can be obtained by adjusting the relevant parameters in the aforementioned Tables 1 to 4. The high aperture ratio can ensure the light uniformity of the beauty product, and the high aperture ratio can ensure the energy demand per unit area of ​​the skin, ensuring that the heat in local positions is not too high and burns the skin.

[0108] In some embodiments, the anode in the embodiment of the present disclosure can be a single-layer metal film, or it can include a three-layer stacked structure of transparent conductive film / metal film / transparent conductive film, wherein the material of the transparent conductive film can be indium tin oxide ITO or indium zinc oxide IZO, and the metal film can be a metal film such as Al, Ag, or Cu.

[0109] In some embodiments, the cathode material in the embodiments of the present disclosure can be any one or more of magnesium (Mg), silver (Ag), aluminum (Al), copper (Cu) and lithium (Li), or an alloy made of any one or more of the above metals.

[0110] In some embodiments, the light-emitting device composed of the anode, light-emitting layer, and cathode in the embodiments of the present disclosure may be an inorganic light-emitting diode, an organic light-emitting diode (OLED) made of organic materials, a quantum dot light-emitting diode (QLED) made of quantum dot materials, a micro light-emitting diode (Micro LED), or a mini light-emitting diode (Mini LED). The embodiments of the present disclosure take the light-emitting device as an OLED as an example.

[0111] Based on the same inventive concept, the present disclosure further provides a method for manufacturing the above-mentioned stretchable device, which is used to manufacture the above-mentioned stretchable device provided in the embodiment of the present disclosure, as shown in FIG7 , comprising:

[0112] S701, forming a plurality of island regions, a plurality of hole regions, and a plurality of bridge regions on a substrate layer, wherein at least one island region includes a sub-pixel;

[0113] S702. Form an anode, a light-emitting layer and a cathode in the island area along a direction away from the substrate layer; wherein the island area includes an effective light-emitting area and an overlapping area located outside the effective light-emitting area, the anode and the light-emitting layer cover the effective light-emitting area, the cathode covers the effective light-emitting area and at least part of the overlapping area, the overlapping area includes an auxiliary cathode arranged in the same layer as the anode, and the cathode is electrically connected to the auxiliary cathode.

[0114] The process of forming each film layer in the present disclosure may include a composition process and a photolithography process, among which the composition process may include depositing a film layer, coating a photoresist, mask exposure, development, etching, stripping the photoresist and other processes, while the photolithography process may include coating a film layer, mask exposure, development and other processes. The evaporation, deposition, coating, and coating used are all mature preparation processes in the relevant technology.

[0115] Taking the stretchable device shown in FIG2 as an example, the manufacturing process of the stretchable device shown in FIG2 is described in detail, which may include the following steps:

[0116] (1) Taking the substrate layer 1 including a flexible layer structure as an example, the substrate layer 1 is divided into an island area Q1, a hole area Q2 and a bridge area Q3, and the substrate layer 1 is formed on the glass substrate 100. A barrier layer 13 is formed on the substrate layer 1, and a metal film is deposited on the barrier layer 13. The metal film is patterned by a patterning process to form a first metal layer 14 (Gate layer) on the barrier layer 13. The first metal layer 14 is used to route the first power line VSS and the second power line VDD located in the island area Q1, as shown in FIG8A.

[0117] (2) A thin film of inorganic material is deposited on the first metal layer 14 and patterned to form an interlayer insulating layer 15. The interlayer insulating layer 15 covers the island region Q1, as shown in FIG8B.

[0118] (3) A metal film is deposited on the interlayer insulating layer 15, and the metal film is patterned by a patterning process to form a second metal layer 16 (SD layer) on the interlayer insulating layer 15. The second metal layer 16 includes a first transfer portion 161 and a second transfer portion 162 for electrically connecting to each power line located in the first metal layer 14, and includes a first power line VSS and a second power line VDD located in the bridge area Q3, as shown in FIG8C.

[0119] (4) A flat thin film of organic material is coated on the second metal layer 16, and a flat layer 7 is formed in the island area Q1 and the bridge area Q3 through masking, exposure, and development processes. The flat layer 7 corresponding to the first transition portion 161, the second transition portion 162, and the hole area Q2 is developed away, as shown in FIG8D.

[0120] (5) An inorganic insulating material film layer is deposited on the flat layer 7, and the inorganic insulating material film layer is patterned. The inorganic insulating material film layer in the hole area Q2 is removed, and a groove is formed in the transition area Q13 of the island area Q1 that penetrates the inorganic insulating material film layer to form a first passivation layer 8, as shown in FIG8E.

[0121] (6) Using the first passivation layer 8 as a mask, the flat layer 7 is exposed and developed to form a groove below the slot, thereby forming an annular partition groove U1, as shown in FIG8F.

[0122] (7) An inorganic insulating material film layer is deposited on the first passivation layer 8, and the inorganic insulating material film layer and the first passivation layer 8 are patterned. The inorganic insulating material film layer and the first passivation layer 8 are etched away at positions corresponding to the first transition portion 161 and the second transition portion 162 to form a second passivation layer 9, as shown in FIG8G .

[0123] (8) A conductive film is deposited on the second passivation layer 9, and the conductive film is patterned by a patterning process to form an anode 2 and an auxiliary cathode 5. The auxiliary cathode 5 is electrically connected to the first transition portion 161 through a via hole penetrating the second passivation layer 9, the first passivation layer 8 and the flat layer 7. The anode 2 is electrically connected to the second transition portion 162 through a via hole penetrating the second passivation layer 9, the first passivation layer 8 and the flat layer 7, as shown in FIG8H.

[0124] (9) A pixel defining film is coated on the anode 2, and a pixel defining layer 6 is formed in the island area Q1 through masking, exposure, and development processes. A pixel opening is provided on the pixel defining layer 6 of the island area Q1, and the pixel defining film in the pixel opening is developed away to expose the surface of the anode 2; the pixel defining film has a via hole at the position corresponding to the auxiliary cathode 5; and the pixel defining film is developed away at the position corresponding to the hole area Q2 and the bridge area Q3, as shown in FIG8I.

[0125] (10) A light-emitting layer 3 and a cathode 4 are sequentially formed on the pixel defining layer 6. The light-emitting layer 3 is formed in the pixel opening of the pixel defining layer 6 and is connected to the anode 2. The cathode 4 is disconnected at the position of the partition groove U1. The cathode 4 is electrically connected to the auxiliary cathode 5 through a via hole penetrating the pixel defining layer 6. The cathode 4 is developed corresponding to the hole area Q2 and the bridge area Q3, as shown in FIG8J.

[0126] (11) A first inorganic encapsulation film 11 ′ is deposited on the cathode 4 , as shown in FIG8K .

[0127] (12) An organic encapsulation film is formed on the first inorganic encapsulation film 11 ′, and the organic encapsulation film is exposed and developed to form an organic encapsulation layer 10 in the island area Q1 , and all organic encapsulation films in the bridge area Q3 and the hole area Q2 are removed, as shown in FIG8L .

[0128] (13) A second inorganic encapsulation film 12 ′ is deposited on the organic encapsulation layer 10 , as shown in FIG8M .

[0129] (14) The second inorganic encapsulation film 12', the first inorganic encapsulation film 11' and the second passivation layer 9 are patterned, and a through hole penetrating the second inorganic encapsulation film 12', the first inorganic encapsulation film 11' and the second passivation layer 9 is formed in the hole area Q2, the first inorganic encapsulation layer 11 and the second inorganic encapsulation layer 12 are formed in the island area Q1, and the second inorganic encapsulation film 12', the first inorganic encapsulation film 11' and the second passivation layer 9 are retained in the bridge area Q3, as shown in FIG8N.

[0130] (15) Using the second inorganic encapsulation layer 12, the first inorganic encapsulation film 11 and the second passivation layer 9 as masks, the substrate layer 1 is patterned to remove the substrate layer 1 in the hole region Q2, as shown in FIG8O.

[0131] (16) The second inorganic encapsulation layer 12, the first inorganic encapsulation film 11 and the second passivation layer 9 at the edge of the hole region Q2 are etched to shorten the width of the bridge region Q3, as shown in FIG8P.

[0132] (17) The glass substrate 100 is peeled off through a laser lift-off process to form the stretchable device shown in FIG. 2 .

[0133] It should be noted that the manufacturing method of the stretchable device shown in Figure 4 is similar to the above-mentioned manufacturing method. The difference is that Figure 4 is a ring-shaped metal partition structure U2 made of metal material above the auxiliary cathode 5, ensuring that the metal partition structure U2 is electrically connected to the auxiliary cathode 5 and the first cathode part 41 of the cathode. Figure 4 does not need to make the partition groove U1 in Figure 2.

[0134] Based on the same inventive concept, an embodiment of the present invention further provides a beauty device, as shown in Figures 9 and 10, comprising a main body 20 and a stretchable device 31 attached to the main body 20, wherein the stretchable device 31 is the above-mentioned stretchable device provided in the embodiment of the present invention.

[0135] The above-mentioned beauty device provided by the embodiment of the present disclosure, due to the use of the stretchable device with a high aperture ratio provided by the embodiment of the present disclosure, can improve the light uniformity of the beauty product, can ensure the energy demand per unit area of ​​the skin, and ensure that the heat in local areas is not too high and burns the skin, thereby improving the beauty effect; and the beauty device made with the stretchable device with a high aperture ratio provided by the embodiment of the present disclosure has good air permeability; and the beauty device made with the stretchable device provided by the present disclosure can have good appearance adaptability with various beauty products, expanding the use of beauty products.

[0136] It should be noted that Figures 9 and 10 are only for schematically illustrating the structure of the beauty device, and the stretchable device 31 only illustrates part of the membrane layer. The specific structure of the stretchable device 31 can be found in the structures shown in Figures 2 and 4 above.

[0137] In some embodiments, in the above-mentioned beauty device provided in the embodiments of the present disclosure, as shown in FIG9 , the beauty device can be a facial mask, and the substrate layer 1 of the stretchable device 31 is away from the main body 20. Specifically, the shape of the main body 20 can be the shape of a human face, and the main body 20 is an elastic bearing membrane (stretchable). By attaching the stretchable device 31 to the main body 20, and then attaching the side of the main body 20 away from the stretchable device 31 to the human facial skin 32, and stretching the facial mask according to the size of the human face, so that the facial mask can perfectly fit different human faces, then the light emitted by the stretchable device 31 is evenly projected on the face, performing phototherapy on the face, and achieving a beauty effect. Due to the high aperture ratio of the stretchable device 31, the facial mask can fit the face tightly without the problem of burning the skin.

[0138] In some embodiments, due to the relatively thin thickness of the substrate layer, to protect the substrate layer from damage, the cosmetic device provided in the embodiments of the present disclosure, as shown in FIG9 , further includes a protective film 50 attached to the side of the stretchable device 31 facing away from the body 20. The protective film 50 is provided with through holes corresponding to the hole region Q2 of the stretchable device 31. In this way, the protective film 50 can protect the stretchable device 31 while ensuring the breathability of the mask.

[0139] Specifically, the protective film 50 is also made of an elastic and stretchable material.

[0140] In some embodiments, in the above-mentioned beauty device provided by the embodiment of the present disclosure, as shown in FIG9 , the body 20 is an elastic bearing membrane having the function of absorbing beauty liquid, so that beauty liquid can be used for beauty treatment at the same time as light therapy.

[0141] In some embodiments, in the above-mentioned beauty device provided in the embodiments of the present disclosure, as shown in Figure 11, Figure 11 is a plan view of the main body 20 in Figure 9. The main body 20 is provided with a mouth opening 201, a nose opening 202 and an eye opening 203 to ensure basic breathing and external vision. Except for these openings, the remaining parts have the same stretchable device structure.

[0142] In some embodiments, in the above-mentioned beauty device provided in the embodiment of the present disclosure, as shown in FIG10 , the beauty device can be a face mask, the body 20 is a curved structure, the stretchable device 31 is fitted inside the curved structure, and the substrate layer 1 of the stretchable device 31 is close to the body 20. Specifically, the shape of the body 20 can be a curved structure in the shape of a human face, which can be stuck on the human face. When the stretchable device 31 of the present disclosure is used to make a face mask with a phototherapy effect, the stretchable device 31 can be stretched into the shape of the mask according to the shape of the mask, and then the side of the substrate layer 1 of the stretchable device 31 facing away from the light-emitting device is fitted to the inside of the mask. Then, the light emitted by the stretchable device 31 is evenly projected onto the face, performing phototherapy on the face to achieve a beauty effect. Due to the high aperture ratio of the stretchable device 31, there will be no problem of burning the skin.

[0143] In some embodiments, the cosmetic device provided in the embodiments of the present disclosure, as shown in FIG10 , further includes an elastic supporting film 60 positioned between the body 20 and the substrate layer 1 of the stretchable device 31. The elastic supporting film 60 is provided with through-holes corresponding to the apertures of the stretchable device 31. This allows the side of the substrate layer 1 facing away from the light-emitting device to adhere to the interior of the mask through the elastic supporting film 60, thereby ensuring breathability of the mask.

[0144] In some embodiments, in the above-mentioned beauty device provided in the embodiment of the present disclosure, as shown in FIG10 , eye openings are provided on the main body 20 , which can be opened separately for two eyes, or a continuous long opening can be opened across the two eyes.

[0145] In some embodiments, the cosmetic device provided by the embodiments of the present disclosure is relatively thin and light, with a total thickness of less than 10 mm, and further less than 5 mm.

[0146] In some embodiments, in the cosmetic device provided in the embodiments of the present disclosure, two stretchable devices 31 can be attached to the body 20 of the cosmetic device shown in Figures 9 and 10. As shown in Figure 12, which is a plan view of the body 20 in Figures 9 and 10 attached to the two stretchable devices 31, the two stretchable devices 31 are symmetrically arranged along the line connecting the nose and the center of the eyebrows, that is, the cosmetic device can adopt a dual-screen splicing method. Because the stretchability requirement near the line connecting the nose and the center of the eyebrows (the dotted circle) is lower than the stretchability requirement far from the line connecting the nose and the center of the eyebrows (the rest of the positions except the dotted circle), the number of hole areas in the stretchable device 31 near the line connecting the nose and the center of the eyebrows (the dotted circle) can be set to be less than the number of hole areas far from the line connecting the nose and the center of the eyebrows (the rest of the positions except the dotted circle), thereby further improving the aperture ratio.

[0147] Of course, in some embodiments, the splicing screen shown in Figure 12 can also have the same hole area density at each position. Due to the design of the splicing screen, the demand for stretching rate at the dotted circle can be low. When stretching, the actual stretching amount at the dotted circle is smaller than that of other areas. Therefore, the decrease in the opening rate at the dotted circle after stretching is not that large, and it is not easy to be damaged by stretching.

[0148] The embodiments of the present disclosure provide a stretchable device, a manufacturing method thereof, and a beauty device. The high aperture ratio of the stretchable device improves the light uniformity of the beauty product, and the high aperture ratio can ensure the energy demand per unit area of ​​the skin, ensuring that the heat in local areas is not too high and burns the skin, thereby improving the beauty effect; in addition, because the stretchable device has multiple hole areas, when used in beauty products, the beauty products have better air permeability; and the stretchable device provided by the present disclosure can have good appearance adaptability with various beauty products, expanding the use of beauty products.

[0149] Although the preferred embodiments of the present disclosure have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present disclosure.

[0150] Obviously, those skilled in the art may make various changes and modifications to the embodiments of the present disclosure without departing from the spirit and scope of the embodiments of the present disclosure. Thus, if such changes and modifications of the embodiments of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is intended to include such changes and modifications.

Claims

1. A stretchable device, wherein: The device comprises a substrate layer, a plurality of island regions spaced apart from each other on the substrate layer, a hole region between adjacent island regions, and a bridge region connecting adjacent island regions, wherein at least one island region comprises a sub-pixel; The island area includes an anode, a light-emitting layer and a cathode arranged on the substrate layer, the island area includes an effective light-emitting area and an overlapping area located outside the effective light-emitting area, the anode and the light-emitting layer at least cover the effective light-emitting area, the cathode covers the effective light-emitting area and at least part of the overlapping area, the overlapping area includes an auxiliary cathode arranged on the same layer as the anode, and the cathode is electrically connected to the auxiliary cathode.

2. The stretchable device according to claim 1, wherein The auxiliary cathode includes a plurality of overlapping portions located at corners of the overlapping area, and the cathode is electrically connected to at least one of the overlapping portions.

3. The stretchable device according to claim 1, wherein The auxiliary cathode includes a plurality of overlapping portions located at the center of each side of the overlapping area, and the cathode is electrically connected to at least one of the overlapping portions.

4. The stretchable device according to claim 2 or 3, wherein: It also includes a pixel defining layer located between the anode and the light-emitting layer, and the cathode is electrically connected to the overlapping portion through a via hole penetrating the pixel defining layer.

5. The stretchable device according to any one of claims 2 to 4, wherein: The island region further includes a transition region located at the periphery of the overlapping region. The transition region is provided with an annular closed partition groove, and the cathode is disconnected at the partition groove.

6. The stretchable device according to claim 5, wherein The device further comprises: a planar layer located between the substrate layer and the anode, a first passivation layer located between the planar layer and the anode, a second passivation layer located between the first passivation layer and the anode, a first inorganic encapsulation layer located on a side of the cathode facing away from the substrate layer, an organic encapsulation layer located on a side of the first inorganic encapsulation layer facing away from the substrate layer, and a second inorganic encapsulation layer located on a side of the organic encapsulation layer facing away from the substrate layer; The partition groove passes through the first passivation layer and at least part of the planar layer, the side of the first passivation layer close to the partition groove protrudes out of the side of the planar layer close to the partition groove, the second passivation layer and the first inorganic encapsulation layer both cover the bottom and sidewalls of the partition groove, and the organic encapsulation layer fills the partition groove.

7. The stretchable device according to claim 1, wherein The auxiliary cathode is a closed structure arranged around the effective light-emitting area.

8. The stretchable device according to claim 7, wherein: The device further comprises: a planar layer located between the substrate layer and the anode, a pixel defining layer located between the anode and the light-emitting layer, and an annular metal partition structure located between the pixel defining layer and the cathode and located in the overlapping region; the annular metal partition structure is electrically connected to the auxiliary cathode; The cathode includes: a first cathode portion located in the annular metal partition structure and in contact with and electrically connected to the annular metal partition structure; and a second cathode portion located on a side of the annular metal partition structure away from the substrate layer.

9. The stretchable device according to claim 8, wherein The annular metal partition structure includes: a first conductive structure located between the pixel defining layer and the second cathode portion, and a second conductive structure located between the first conductive structure and the second cathode portion; the first conductive structure is electrically connected to the auxiliary cathode through a via hole passing through the pixel defining layer, the first cathode portion is electrically connected to the first conductive structure in contact, and the orthographic projection area of ​​the bottom surface of the second conductive structure close to the substrate layer on the substrate layer is larger than the orthographic projection area of ​​the top surface of the first conductive structure facing away from the substrate layer on the substrate layer.

10. The stretchable device according to claim 8 or 9, wherein: The material of the pixel definition layer is an inorganic material.

11. The stretchable device according to any one of claims 6, 8 to 10, wherein: It also includes a first power line and a second power line that are arranged in the bridge area and extend to the island area and are electrically connected to the sub-pixels; The stretchable device further comprises: a barrier layer located between the substrate layer and the flat layer, a first metal layer located between the barrier layer and the planar layer, an interlayer insulating layer located between the first metal layer and the planar layer, and at least one second metal layer located between the interlayer insulating layer and the planar layer; The portion of the first power line located in the island area is provided in the first metal layer, the portion of the first power line located in the bridge area includes at least one signal line provided in the second metal layer, the auxiliary cathode is electrically connected to the first transition portion provided in the second metal layer via a via penetrating the planar layer, and the first transition portion is electrically connected to the first power line provided in the first metal layer via a via penetrating the interlayer insulating layer; The portion of the second power line located in the island area is set in the first metal layer, the portion of the second power line located in the bridge area includes a signal line set in at least one of the second metal layers, the anode is electrically connected to the second transfer portion located in the second metal layer through a via penetrating the flat layer, and the second transfer portion is electrically connected to the second power line located in the first metal layer through a via penetrating the interlayer insulating layer.

12. The stretchable device according to claim 11, wherein The sum of the widths of the first power lines and the second power lines is greater than 40 μm.

13. The stretchable device according to claim 12, wherein: The sum of the widths of the first power lines and the second power lines is the width of the signal line×the number of layers of the signal line×the number of bridge regions between adjacent island regions.

14. The stretchable device according to any one of claims 1 to 13, wherein: The stretchable device has an opening ratio greater than 50%.

15. A beauty device, wherein: It comprises a main body and a stretchable device adhered to the main body, and the stretchable device is a stretchable device according to any one of claims 1-14.

16. The cosmetic device according to claim 15, wherein: The cosmetic device is a facial mask, and the substrate layer of the stretchable device is away from the body.

17. The cosmetic device according to claim 16, wherein: It also includes a protective film attached to the side of the stretchable device facing away from the main body, and the protective film is provided with through holes corresponding to the hole area of ​​the stretchable device.

18. The cosmetic device according to claim 17, wherein: The main body is an elastic bearing film having the function of absorbing cosmetic liquid.

19. The cosmetic device according to any one of claims 16 to 18, wherein: The body is provided with a mouth opening, a nose opening and eye openings.

20. The cosmetic device according to claim 15, wherein The cosmetic device is a face mask, the body is a curved surface structure, the stretchable component is fitted into the curved surface structure, and the substrate layer of the stretchable component is close to the body.

21. The cosmetic device according to claim 20, wherein: It also includes an elastic bearing film located between the body and the substrate layer of the stretchable device, and the elastic bearing film is provided with through holes corresponding to the hole area of ​​the stretchable device.

22. The cosmetic device according to claim 20 or 21, wherein: The body is provided with eye openings.

23. The cosmetic device according to any one of claims 16 to 22, wherein: The two stretchable components are attached to the main body, and the two stretchable components are symmetrically arranged along the line connecting the nose and the center of the eyebrows.

24. The cosmetic device according to claim 23, wherein The number of hole areas in the stretchable device close to the line connecting the nose and the center of the eyebrows is less than the number of hole areas away from the line connecting the nose and the center of the eyebrows.

25. A method for manufacturing a stretchable device, for manufacturing the stretchable device according to any one of claims 1 to 14, wherein: The production method comprises: forming a plurality of island regions, a plurality of hole regions, and a plurality of bridge regions on the substrate layer, wherein at least one of the island regions includes a sub-pixel; An anode, a light-emitting layer and a cathode are formed in the island area along a direction away from the substrate layer; wherein the island area includes an effective light-emitting area and an overlapping area located outside the effective light-emitting area, the anode and the light-emitting layer cover the effective light-emitting area, the cathode covers the effective light-emitting area and at least part of the overlapping area, and the overlapping area includes an auxiliary cathode arranged in the same layer as the anode, and the cathode is electrically connected to the auxiliary cathode.

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